diff options
author | Carl Worth <cworth@cworth.org> | 2003-04-17 13:24:29 +0000 |
---|---|---|
committer | Carl Worth <cworth@cworth.org> | 2003-04-17 13:24:29 +0000 |
commit | ee738deaf6ff2cf7391d813876241b389a0dedaf (patch) | |
tree | e5a2750028d7f5783427213426af58d9eed1d73a | |
parent | b61b9ffc2322e09873b9e2dfb0c1da56ec1ffd61 (diff) | |
download | cairo-ee738deaf6ff2cf7391d813876241b389a0dedaf.tar.gz |
Switched to autotools. Dropped XrPush/PopGroup. Supports non-X Xc rendering.
-rw-r--r-- | .cvsignore | 19 | ||||
-rw-r--r-- | AUTHORS | 1 | ||||
-rw-r--r-- | BUGS | 1 | ||||
-rw-r--r-- | COPYING | 21 | ||||
-rw-r--r-- | ChangeLog | 17 | ||||
-rw-r--r-- | INSTALL | 9 | ||||
-rw-r--r-- | Imakefile | 63 | ||||
-rw-r--r-- | NEWS | 0 | ||||
-rw-r--r-- | Xr.h | 278 | ||||
-rwxr-xr-x | autogen.sh | 28 | ||||
-rw-r--r-- | configure.in | 51 | ||||
-rw-r--r-- | local.def | 53 | ||||
-rw-r--r-- | src/.cvsignore | 7 | ||||
-rw-r--r-- | src/Xr.h | 91 | ||||
-rw-r--r-- | src/xr.c | 50 | ||||
-rw-r--r-- | src/xrfont.c | 4 | ||||
-rw-r--r-- | src/xrgstate.c | 240 | ||||
-rw-r--r-- | src/xrint.h | 123 | ||||
-rw-r--r-- | src/xrstate.c | 9 | ||||
-rw-r--r-- | src/xrsurface.c | 434 | ||||
-rw-r--r-- | src/xrtransform.c | 10 | ||||
-rw-r--r-- | xr.c | 513 | ||||
-rw-r--r-- | xrcolor.c | 70 | ||||
-rw-r--r-- | xrfiller.c | 103 | ||||
-rw-r--r-- | xrfont.c | 170 | ||||
-rw-r--r-- | xrgstate.c | 885 | ||||
-rw-r--r-- | xrint.h | 794 | ||||
-rw-r--r-- | xrmisc.c | 34 | ||||
-rw-r--r-- | xrpath.c | 432 | ||||
-rw-r--r-- | xrpen.c | 389 | ||||
-rw-r--r-- | xrpolygon.c | 173 | ||||
-rw-r--r-- | xrspline.c | 269 | ||||
-rw-r--r-- | xrstate.c | 109 | ||||
-rw-r--r-- | xrstroker.c | 643 | ||||
-rw-r--r-- | xrsurface.c | 323 | ||||
-rw-r--r-- | xrtransform.c | 301 | ||||
-rw-r--r-- | xrtraps.c | 589 |
37 files changed, 691 insertions, 6615 deletions
diff --git a/.cvsignore b/.cvsignore index 2729ada4d..a3c1c12ce 100644 --- a/.cvsignore +++ b/.cvsignore @@ -1,2 +1,17 @@ -unshared -exports +Makefile +Makefile.am +Makefile.in +aclocal.m4 +config.cache +config.guess +config.h +config.h.in +config.log +config.status +config.sub +configure +Xr.pc +libtool +ltmain.sh +stamp-h +stamp-h.in diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 000000000..af389a72c --- /dev/null +++ b/AUTHORS @@ -0,0 +1 @@ +Carl D. Worth <cworth@isi.edu> @@ -0,0 +1 @@ +SEGV if XrSetRGBColor is called before XrSetTargetDrawable diff --git a/COPYING b/COPYING new file mode 100644 index 000000000..9f54bab9f --- /dev/null +++ b/COPYING @@ -0,0 +1,21 @@ +Copyright © 2002 Carl D. Worth + +Permission to use, copy, modify, distribute, and sell this software +and its documentation for any purpose is hereby granted without fee, +provided that the above copyright notice appear in all copies and that +both that copyright notice and this permission notice appear in +supporting documentation, and that the name of Carl D. Worth not be +used in advertising or publicity pertaining to distribution of the +software without specific, written prior permission. Carl D. Worth +makes no representations about the suitability of this software for +any purpose. It is provided "as is" without express or implied +warranty. + +CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, INDIRECT OR +CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +PERFORMANCE OF THIS SOFTWARE. + @@ -1,3 +1,20 @@ +2003-04-17 Carl Worth <cworth@isi.edu> + + * Switched from imake to autotools. + + * src/xrint.h: XrSurface structure is now greatly simplified, + (details now handled by XcSurface). + + * src/Xr.h: Eliminated Display * parameter so Xr can be used for + non-X drawing. + Removed XrPushGroup/XrPopGroup. + Replaced XrSetDrawable/XrSetVisual with XrSetTargetDrawable. + Added XrSetTargetSurface and several new XrSurfaceCreate + functions. + Added XrShowSurface, (functionality overlaps with XrShowImage -- + need to fix this) + + 2003-02-14 Carl Worth <cworth@east.isi.edu> * xrgstate.c (_XrGStateShowImageTransform): Fixed transformed diff --git a/INSTALL b/INSTALL new file mode 100644 index 000000000..8ff0f3628 --- /dev/null +++ b/INSTALL @@ -0,0 +1,9 @@ +This package uses automake, in order to generate the Makefiles use: + + $ autogen.sh + +After that, standard build procedures apply: + + $ make + # make install + diff --git a/Imakefile b/Imakefile deleted file mode 100644 index 38887ee6d..000000000 --- a/Imakefile +++ /dev/null @@ -1,63 +0,0 @@ -XCOMM $XFree86: $ - -#ifdef UseInstalled -/* building outside the tree, use private defines */ -#include "local.def" -#endif - -#define DoNormalLib NormalLibXr -#define DoSharedLib SharedLibXr -#define DoDebugLib DebugLibXr -#define DoProfileLib ProfileLibXr - -#define LibName Xr -#define SoRev SOXRREV -#define IncSubdir X11 -#define IncSubSubdir Xr - -#include <Threads.tmpl> - -#ifdef SharedXrReqs -REQUIREDLIBS = SharedXrReqs -#endif - -INCLUDES = $(XFTINCLUDES) - -SRCS = xr.c \ - xrcolor.c \ - xrfiller.c \ - xrfont.c \ - xrgstate.c \ - xrmisc.c \ - xrpath.c \ - xrpen.c \ - xrpolygon.c \ - xrspline.c \ - xrstate.c \ - xrstroker.c \ - xrsurface.c \ - xrtransform.c \ - xrtraps.c - -OBJS = xr.o \ - xrcolor.o \ - xrfiller.o \ - xrfont.o \ - xrgstate.o \ - xrmisc.o \ - xrpath.o \ - xrpen.o \ - xrpolygon.o \ - xrspline.o \ - xrstate.o \ - xrstroker.o \ - xrsurface.o \ - xrtransform.o \ - xrtraps.o - -HEADERS = Xr.h - -#include <Library.tmpl> - -DependTarget() - @@ -1,278 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Carl D. Worth - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Carl - * D. Worth not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Carl D. Worth makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, - * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#ifndef _XR_H_ -#define _XR_H_ - -#include <X11/Xc/Xc.h> - -typedef struct _XrState XrState; - -/* Functions for manipulating state objects */ -XrState * -XrCreate(Display *dpy); - -void -XrDestroy(XrState *xrs); - -void -XrSave(XrState *xrs); - -void -XrRestore(XrState *xrs); - -void -XrPushGroup(XrState *xrs); - -void -XrPopGroup(XrState *xrs); - -/* Modify state */ -void -XrSetDrawable(XrState *xrs, Drawable drawable); - -void -XrSetVisual(XrState *xrs, Visual *visual); - -typedef enum _XrFormat { - XrFormatARGB32 = PictStandardARGB32, - XrFormatRGB32 = PictStandardRGB24, - XrFormatA8 = PictStandardA8, - XrFormatA1 = PictStandardA1 -} XrFormat; - -void -XrSetFormat(XrState *xrs, XrFormat format); - -typedef enum _XrOperator { - XrOperatorClear = PictOpClear, - XrOperatorSrc = PictOpSrc, - XrOperatorDst = PictOpDst, - XrOperatorOver = PictOpOver, - XrOperatorOverReverse = PictOpOverReverse, - XrOperatorIn = PictOpIn, - XrOperatorInReverse = PictOpInReverse, - XrOperatorOut = PictOpOut, - XrOperatorOutReverse = PictOpOutReverse, - XrOperatorAtop = PictOpAtop, - XrOperatorAtopReverse = PictOpAtopReverse, - XrOperatorXor = PictOpXor, - XrOperatorAdd = PictOpAdd, - XrOperatorSaturate = PictOpSaturate, - - XrOperatorDisjointClear = PictOpDisjointClear, - XrOperatorDisjointSrc = PictOpDisjointSrc, - XrOperatorDisjointDst = PictOpDisjointDst, - XrOperatorDisjointOver = PictOpDisjointOver, - XrOperatorDisjointOverReverse = PictOpDisjointOverReverse, - XrOperatorDisjointIn = PictOpDisjointIn, - XrOperatorDisjointInReverse = PictOpDisjointInReverse, - XrOperatorDisjointOut = PictOpDisjointOut, - XrOperatorDisjointOutReverse = PictOpDisjointOutReverse, - XrOperatorDisjointAtop = PictOpDisjointAtop, - XrOperatorDisjointAtopReverse = PictOpDisjointAtopReverse, - XrOperatorDisjointXor = PictOpDisjointXor, - - XrOperatorConjointClear = PictOpConjointClear, - XrOperatorConjointSrc = PictOpConjointSrc, - XrOperatorConjointDst = PictOpConjointDst, - XrOperatorConjointOver = PictOpConjointOver, - XrOperatorConjointOverReverse = PictOpConjointOverReverse, - XrOperatorConjointIn = PictOpConjointIn, - XrOperatorConjointInReverse = PictOpConjointInReverse, - XrOperatorConjointOut = PictOpConjointOut, - XrOperatorConjointOutReverse = PictOpConjointOutReverse, - XrOperatorConjointAtop = PictOpConjointAtop, - XrOperatorConjointAtopReverse = PictOpConjointAtopReverse, - XrOperatorConjointXor = PictOpConjointXor -} XrOperator; - -void -XrSetOperator(XrState *xrs, XrOperator operator); - -void -XrSetRGBColor(XrState *xrs, double red, double green, double blue); - -void -XrSetTolerance(XrState *xrs, double tolerance); - -void -XrSetAlpha(XrState *xrs, double alpha); - -typedef enum _XrFillRule { XrFillRuleWinding, XrFillRuleEvenOdd } XrFillRule; - -void -XrSetFillRule(XrState *xrs, XrFillRule fill_rule); - -void -XrSetLineWidth(XrState *xrs, double width); - -typedef enum _XrLineCap { XrLineCapButt, XrLineCapRound, XrLineCapSquare } XrLineCap; - -void -XrSetLineCap(XrState *xrs, XrLineCap line_cap); - -typedef enum _XrLineJoin { XrLineJoinMiter, XrLineJoinRound, XrLineJoinBevel } XrLineJoin; - -void -XrSetLineJoin(XrState *xrs, XrLineJoin line_join); - -void -XrSetDash(XrState *xrs, double *dashes, int ndash, double offset); - -void -XrSetMiterLimit(XrState *xrs, double limit); - -void -XrTranslate(XrState *xrs, double tx, double ty); - -void -XrScale(XrState *xrs, double sx, double sy); - -void -XrRotate(XrState *xrs, double angle); - -void -XrConcatMatrix(XrState *xrs, - double a, double b, - double c, double d, - double tx, double ty); - -void -XrSetMatrix(XrState *xrs, - double a, double b, - double c, double d, - double tx, double ty); - -/* XXX: Postscript has both a defaultmatrix and an identmatrix. But - there, they do different things. Here, where they perform the same - function, we should probably only have one name to avoid - confusion. Any votes? */ -void -XrDefaultMatrix(XrState *xrs); - -void -XrIdentityMatrix(XrState *xrs); - -/* Path creation functions */ -void -XrNewPath(XrState *xrs); - -void -XrMoveTo(XrState *xrs, double x, double y); - -void -XrLineTo(XrState *xrs, double x, double y); - -void -XrCurveTo(XrState *xrs, - double x1, double y1, - double x2, double y2, - double x3, double y3); - -void -XrRelMoveTo(XrState *xrs, double dx, double dy); - -void -XrRelLineTo(XrState *xrs, double dx, double dy); - -void -XrRelCurveTo(XrState *xrs, - double dx1, double dy1, - double dx2, double dy2, - double dx3, double dy3); - -void -XrClosePath(XrState *xrs); - -/* Painting functions */ -void -XrStroke(XrState *xrs); - -void -XrFill(XrState *xrs); - -/* Font/Text functions */ -void -XrSelectFont(XrState *xrs, const char *key); - -void -XrScaleFont(XrState *xrs, double scale); - -void -XrTransformFont(XrState *xrs, - double a, double b, - double c, double d); - -void -XrTextExtents(XrState *xrs, - const unsigned char *utf8, - double *x, double *y, - double *width, double *height, - double *dx, double *dy); - -void -XrShowText(XrState *xrs, const unsigned char *utf8); - -/* Image functions */ - -void -XrShowImage(XrState *xrs, - char *data, - XrFormat format, - unsigned int width, - unsigned int height, - unsigned int stride); - -void -XrShowImageTransform(XrState *xrs, - char *data, - XrFormat format, - unsigned int width, - unsigned int height, - unsigned int stride, - double a, double b, - double c, double d, - double tx, double ty); - -/* Error status queries */ - -typedef enum _XrStatus { - XrStatusSuccess = 0, - XrStatusNoMemory, - XrStatusInvalidRestore, - XrStatusInvalidPopGroup, - XrStatusNoCurrentPoint, - XrStatusInvalidMatrix -} XrStatus; - -XrStatus -XrGetStatus(XrState *xrs); - -const char * -XrGetStatusString(XrState *xrs); - -#endif - diff --git a/autogen.sh b/autogen.sh new file mode 100755 index 000000000..3c416dd64 --- /dev/null +++ b/autogen.sh @@ -0,0 +1,28 @@ +#!/bin/sh +# Run this to generate all the initial makefiles, etc. + +set -e + +if test -z "$*"; then + echo "$0: Note: \`./configure' will be run with no arguments." + echo " If you wish to pass any to it, please specify them on the" + echo " \`$0' command line." + echo +fi + +do_cmd() { + echo "$0: running \`$@'" + $@ +} + +do_cmd libtoolize --force --copy + +do_cmd aclocal + +do_cmd autoheader + +do_cmd automake --add-missing + +do_cmd autoconf + +do_cmd ./configure ${1+"$@"} && echo "Now type \`make' to compile" || exit 1 diff --git a/configure.in b/configure.in new file mode 100644 index 000000000..9964036cd --- /dev/null +++ b/configure.in @@ -0,0 +1,51 @@ +AC_INIT(src/Xr.h) + +dnl =========================================================================== + +XR_MAJOR_VERSION=0 +XR_MINOR_VERSION=1 +XR_MICRO_VERSION=0 +AC_SUBST(XR_MAJOR_VERSION) +AC_SUBST(XR_MINOR_VERSION) +AC_SUBST(XR_MICRO_VERSION) + +XR_VERSION=$XR_MAJOR_VERSION.$XR_MINOR_VERSION.$XR_MICRO_VERSION + +VERSION_INFO=`expr $XR_MAJOR_VERSION + $XR_MINOR_VERSION`:$XR_MICRO_VERSION:$XR_MINOR_VERSION +AC_SUBST(VERSION_INFO) + +dnl =========================================================================== + +XC_REQUIRED=0.1.0 + +dnl =========================================================================== + +AM_INIT_AUTOMAKE(Xr, $XR_VERSION) +AM_CONFIG_HEADER(config.h) + +AM_MAINTAINER_MODE + +AC_PROG_CC +AC_PROG_CPP +AM_PROG_LIBTOOL +AC_STDC_HEADERS + +dnl =========================================================================== + +AC_PATH_XTRA + +dnl =========================================================================== + +PKG_CHECK_MODULES(XR, \ + Xc >= $XC_REQUIRED + ) +AC_SUBST(XR_CFLAGS) +AC_SUBST(XR_LIBS) + +dnl =========================================================================== + +AC_OUTPUT([ +Xr.pc +Makefile +src/Makefile +]) diff --git a/local.def b/local.def deleted file mode 100644 index 93d19aaf1..000000000 --- a/local.def +++ /dev/null @@ -1,53 +0,0 @@ -#ifndef SharedLibXr -#define SharedLibXr HasSharedLibraries -#endif - -#ifndef NormalLibXr -#define NormalLibXr (!SharedLibXr | ForceNormalLib) -#endif - -#ifndef DebugLibXr -#define DebugLibXr NO -#endif - -#ifndef ProfileLibXr -#define ProfileLibXr NO -#endif - -#ifndef XrClientDepLibs -#define XrClientDepLibs $(DEPXCLIB) $(DEPXFTLIB) FontconfigClientDepLibs -#endif -#ifndef XrClientLibs -#define XrClientLibs $(XCLIB) $(XFTLIB) FontconfigClientLibs -#endif - -XRINCLUDES=$(XCINCLUDES) $(XFTINCLUDES) $(FONTCONFIGINCLUDES) - -#if SharedLibXr -#ifndef SharedXrRev -#define SharedXrRev 1.1 -#endif -SharedLibReferences(XR,Xr,$(XRLIBSRC),SOXRREV,SharedXrRev) -#else -ProjectUnsharedLibReferences(XR,Xr,$(XRLIBSRC),XBuildLibDir) -#endif - -#undef LinkBuildLibrary -#define LinkBuildLibrary(lib) MakeDir($(BUILDLIBDIR)) @@\ - RemoveFile($(BUILDLIBDIR)/lib) @@\ - cd $(BUILDLIBDIR) && $(LN) $(BUILDLIBTOP)/$(CURRENT_DIR)/lib . -#undef _LinkBuildLibrary -#define _LinkBuildLibrary(lib) LinkBuildLibrary(lib) - -#undef LinkBuildLibraryMaybe -#define LinkBuildLibraryMaybe(lib,doit) MakeDir($(BUILDLIBDIR)) @@\ - @if doit; then (set -x; \ @@\ - RemoveFile($(BUILDLIBDIR)/lib); \ @@\ - cd $(BUILDLIBDIR) && $(LN) $(BUILDLIBTOP)/$(CURRENT_DIR)/lib .); fi - -#ifdef LdPreLibs -# undef LdPreLibs -#endif -#define LdPreLibs -L$(BUILDLIBDIR) LdPreLib XLdPreLibs - -LDPRELIBS=LdPreLibs diff --git a/src/.cvsignore b/src/.cvsignore new file mode 100644 index 000000000..cf92059f2 --- /dev/null +++ b/src/.cvsignore @@ -0,0 +1,7 @@ +.deps +.libs +Makefile +Makefile.am +Makefile.in +*.la +*.lo @@ -26,13 +26,14 @@ #ifndef _XR_H_ #define _XR_H_ -#include <X11/Xc/Xc.h> +#include <Xc.h> typedef struct _XrState XrState; +typedef struct _XrSurface XrSurface; /* Functions for manipulating state objects */ XrState * -XrCreate(Display *dpy); +XrCreate(void); void XrDestroy(XrState *xrs); @@ -43,18 +44,17 @@ XrSave(XrState *xrs); void XrRestore(XrState *xrs); +/* XXX: I want to rethink this API void XrPushGroup(XrState *xrs); void XrPopGroup(XrState *xrs); +*/ /* Modify state */ void -XrSetDrawable(XrState *xrs, Drawable drawable); - -void -XrSetVisual(XrState *xrs, Visual *visual); +XrSetTargetSurface (XrState *xrs, XrSurface *surface); typedef enum _XrFormat { XrFormatARGB32 = PictStandardARGB32, @@ -62,9 +62,11 @@ typedef enum _XrFormat { XrFormatA8 = PictStandardA8, XrFormatA1 = PictStandardA1 } XrFormat; - + void -XrSetFormat(XrState *xrs, XrFormat format); +XrSetTargetDrawable (XrState *xrs, + Display *dpy, + Drawable drawable); typedef enum _XrOperator { XrOperatorClear = PictOpClear, @@ -238,6 +240,9 @@ XrShowText(XrState *xrs, const unsigned char *utf8); /* Image functions */ +/* XXX: Is "Show" the right term here? With operators such as + OutReverse we may not actually be showing any part of the + surface. */ void XrShowImage(XrState *xrs, char *data, @@ -257,6 +262,24 @@ XrShowImageTransform(XrState *xrs, double c, double d, double tx, double ty); +/* XXX: The ShowImage/ShowSurface APIs definitely need some work. If + we want both then one should be a convenience function for the + other and the interfaces should be consistent in some sense. One + trick is to resolve the interaction with XrSurfaceSetTransform (if + it is to be exposed) */ +void +XrShowSurface (XrState *xrs, + XrSurface *surface, + int x, + int y, + int width, + int height); + +/* Query functions */ + +XrSurface * +XrGetTargetSurface (XrState *xrs); + /* Error status queries */ typedef enum _XrStatus { @@ -274,5 +297,57 @@ XrGetStatus(XrState *xrs); const char * XrGetStatusString(XrState *xrs); +/* Surface mainpulation */ + +/* XXX: This is a mess from the user's POV. Should the Visual or the + XrFormat control what render format is used? Maybe I can have + XrSurfaceCreateForWindow with a visual, and + XrSurfaceCreateForPixmap with an XrFormat. Would that work? +*/ +XrSurface * +XrSurfaceCreateForDrawable (Display *dpy, + Drawable drawable, + Visual *visual, + XrFormat format, + Colormap colormap); + +XrSurface * +XrSurfaceCreateForImage (char *data, + XrFormat format, + int width, + int height, + int stride); + +XrSurface * +XrSurfaceCreateNextTo (XrSurface *neighbor, + XrFormat format, + int width, + int height); + +/* XXX: One problem with having RGB and A here in one function is that + it introduces the question of pre-multiplied vs. non-pre-multiplied + alpha. Do I want to export an XrColor structure instead? So far, no + other public functions need it. */ +XrSurface * +XrSurfaceCreateNextToSolid (XrSurface *neighbor, + XrFormat format, + int width, + int height, + double red, + double green, + double blue, + double alpha); + +void +XrSurfaceDestroy(XrSurface *surface); + +/* XXX: The Xc version of this function isn't quite working yet +XrStatus +XrSurfaceSetClipRegion (XrSurface *surface, Region region); +*/ + +XrStatus +XrSurfaceSetRepeat (XrSurface *surface, int repeat); + #endif @@ -33,9 +33,9 @@ static void _XrClipValue(double *value, double min, double max); XrState * -XrCreate(Display *dpy) +XrCreate(void) { - return _XrStateCreate(dpy); + return _XrStateCreate(); } void @@ -62,6 +62,7 @@ XrRestore(XrState *xrs) xrs->status = _XrStatePop(xrs); } +/* XXX: I want to rethink this API void XrPushGroup(XrState *xrs) { @@ -87,32 +88,29 @@ XrPopGroup(XrState *xrs) xrs->status = _XrStatePop(xrs); } +*/ void -XrSetDrawable(XrState *xrs, Drawable drawable) +XrSetTargetSurface (XrState *xrs, XrSurface *surface) { if (xrs->status) return; - xrs->status = _XrGStateSetDrawable(_XR_CURRENT_GSTATE(xrs), drawable); + xrs->status = _XrGStateSetTargetSurface (_XR_CURRENT_GSTATE (xrs), surface); } void -XrSetVisual(XrState *xrs, Visual *visual) +XrSetTargetDrawable (XrState *xrs, + Display *dpy, + Drawable drawable) { if (xrs->status) return; - xrs->status = _XrGStateSetVisual(_XR_CURRENT_GSTATE(xrs), visual); -} - -void -XrSetFormat(XrState *xrs, XrFormat format) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateSetFormat(_XR_CURRENT_GSTATE(xrs), format); + xrs->status = _XrGStateSetTargetDrawable (_XR_CURRENT_GSTATE (xrs), + dpy, drawable, + DefaultVisual (dpy, DefaultScreen (dpy)), + 0); } void @@ -475,6 +473,28 @@ XrShowImageTransform(XrState *xrs, tx, ty); } +void +XrShowSurface (XrState *xrs, + XrSurface *surface, + int x, + int y, + int width, + int height) +{ + if (xrs->status) + return; + + xrs->status = _XrGStateShowSurface (_XR_CURRENT_GSTATE (xrs), + surface, + x, y, + width, height); +} + +XrSurface * +XrGetTargetSurface (XrState *xrs) +{ + return _XrGStateGetTargetSurface (_XR_CURRENT_GSTATE (xrs)); +} XrStatus XrGetStatus(XrState *xrs) diff --git a/src/xrfont.c b/src/xrfont.c index d1416bce8..9349cee2a 100644 --- a/src/xrfont.c +++ b/src/xrfont.c @@ -155,7 +155,9 @@ _XrFontResolveXftFont(XrFont *font, XrGState *gstate, XftFont **xft_font) FcPatternAddMatrix(pattern, "matrix", &fc_matrix); - font->dpy = gstate->dpy; + /* XXX: Need to abandon Xft and use Xc instead */ + /* When I do that I can throw away these Display pointers */ + font->dpy = gstate->surface->dpy; match = XftFontMatch (font->dpy, DefaultScreen(font->dpy), pattern, &result); if (!match) return 0; diff --git a/src/xrgstate.c b/src/xrgstate.c index 90a4e7732..4fb25eb24 100644 --- a/src/xrgstate.c +++ b/src/xrgstate.c @@ -28,30 +28,22 @@ #include "xrint.h" -static Picture -_XrGStateGetPicture(XrGState *gstate); - -static Picture -_XrGStateGetSrcPicture(XrGState *gstate); - XrGState * -_XrGStateCreate(Display *dpy) +_XrGStateCreate() { XrGState *gstate; gstate = malloc(sizeof(XrGState)); if (gstate) - _XrGStateInit(gstate, dpy); + _XrGStateInit(gstate); return gstate; } void -_XrGStateInit(XrGState *gstate, Display *dpy) +_XrGStateInit(XrGState *gstate) { - gstate->dpy = dpy; - gstate->operator = XR_GSTATE_OPERATOR_DEFAULT; gstate->tolerance = XR_GSTATE_TOLERANCE_DEFAULT; @@ -67,18 +59,15 @@ _XrGStateInit(XrGState *gstate, Display *dpy) gstate->num_dashes = 0; gstate->dash_offset = 0.0; - gstate->alphaFormat = XcFindStandardFormat(dpy, PictStandardA8); - _XrFontInit(&gstate->font); - gstate->parent_surface = NULL; - gstate->surface = _XrSurfaceCreate(dpy); - gstate->src = _XrSurfaceCreate(dpy); + gstate->surface = NULL; + gstate->solid = NULL; + gstate->pattern = NULL; gstate->mask = NULL; gstate->alpha = 1.0; _XrColorInit(&gstate->color); - _XrSurfaceSetSolidColor(gstate->src, &gstate->color); _XrTransformInitIdentity(&gstate->ctm); _XrTransformInitIdentity(&gstate->ctm_inverse); @@ -109,11 +98,10 @@ _XrGStateInitCopy(XrGState *gstate, XrGState *other) if (status) goto CLEANUP_DASHES; - gstate->parent_surface = NULL; _XrSurfaceReference(gstate->surface); - _XrSurfaceReference(gstate->src); - if (gstate->mask) - _XrSurfaceReference(gstate->mask); + _XrSurfaceReference(gstate->solid); + _XrSurfaceReference(gstate->pattern); + _XrSurfaceReference(gstate->mask); status = _XrPathInitCopy(&gstate->path, &other->path); if (status) @@ -139,15 +127,12 @@ _XrGStateInitCopy(XrGState *gstate, XrGState *other) void _XrGStateDeinit(XrGState *gstate) { - if (gstate->parent_surface) - _XrGStateEndGroup(gstate); - _XrFontDeinit(&gstate->font); - _XrSurfaceDereferenceDestroy(gstate->surface); - _XrSurfaceDereferenceDestroy(gstate->src); - if (gstate->mask) - _XrSurfaceDereferenceDestroy(gstate->mask); + XrSurfaceDestroy(gstate->surface); + XrSurfaceDestroy(gstate->solid); + XrSurfaceDestroy(gstate->pattern); + XrSurfaceDestroy(gstate->mask); _XrColorDeinit(&gstate->color); @@ -190,6 +175,7 @@ _XrGStateClone(XrGState *gstate) } /* Push rendering off to an off-screen group. */ +/* XXX: Rethinking this API XrStatus _XrGStateBeginGroup(XrGState *gstate) { @@ -209,7 +195,7 @@ _XrGStateBeginGroup(XrGState *gstate) if (pix == 0) return XrStatusNoMemory; - gstate->surface = _XrSurfaceCreate(gstate->dpy); + gstate->surface = XrSurfaceCreate(gstate->dpy); if (gstate->surface == NULL) return XrStatusNoMemory; @@ -218,8 +204,7 @@ _XrGStateBeginGroup(XrGState *gstate) _XrColorInit(&clear); _XrColorSetAlpha(&clear, 0); - XcFillRectangle(gstate->dpy, - XrOperatorSrc, + XcFillRectangle(XrOperatorSrc, _XrSurfaceGetXcSurface(gstate->surface), &clear.xc_color, 0, 0, @@ -228,8 +213,10 @@ _XrGStateBeginGroup(XrGState *gstate) return XrStatusSuccess; } +*/ /* Complete the current offscreen group, composing its contents onto the parent surface. */ +/* XXX: Rethinking this API XrStatus _XrGStateEndGroup(XrGState *gstate) { @@ -246,10 +233,10 @@ _XrGStateEndGroup(XrGState *gstate) _XrSurfaceSetSolidColor(&mask, &mask_color); - /* XXX: This could be made much more efficient by using + * XXX: This could be made much more efficient by using _XrSurfaceGetDamagedWidth/Height if XrSurface actually kept - track of such informaton. */ - XcComposite(gstate->dpy, gstate->operator, + track of such informaton. * + XcComposite(gstate->operator, _XrSurfaceGetXcSurface(gstate->surface), _XrSurfaceGetXcSurface(&mask), _XrSurfaceGetXcSurface(gstate->parent_surface), @@ -264,35 +251,58 @@ _XrGStateEndGroup(XrGState *gstate) pix = _XrSurfaceGetDrawable(gstate->surface); XFreePixmap(gstate->dpy, pix); - _XrSurfaceDestroy(gstate->surface); + XrSurfaceDestroy(gstate->surface); gstate->surface = gstate->parent_surface; gstate->parent_surface = NULL; return XrStatusSuccess; } +*/ XrStatus -_XrGStateSetDrawable(XrGState *gstate, Drawable drawable) +_XrGStateSetTargetSurface (XrGState *gstate, XrSurface *surface) { - _XrSurfaceSetDrawable(gstate->surface, drawable); + XrSurfaceDestroy (gstate->surface); + + gstate->surface = surface; + _XrSurfaceReference (surface); return XrStatusSuccess; } -XrStatus -_XrGStateSetVisual(XrGState *gstate, Visual *visual) +/* XXX: Need to decide the memory mangement semantics of this + function. Should it reference the surface again? */ +XrSurface * +_XrGStateGetTargetSurface (XrGState *gstate) { - _XrSurfaceSetVisual(gstate->surface, visual); + if (gstate == NULL) + return NULL; - return XrStatusSuccess; + return gstate->surface; } XrStatus -_XrGStateSetFormat(XrGState *gstate, XrFormat format) +_XrGStateSetTargetDrawable (XrGState *gstate, + Display *dpy, + Drawable drawable, + Visual *visual, + XrFormat format) { - _XrSurfaceSetFormat(gstate->surface, format); + XrStatus status; + XrSurface *surface; - return XrStatusSuccess; + surface = XrSurfaceCreateForDrawable (dpy, drawable, + visual, + format, + DefaultColormap (dpy, DefaultScreen (dpy))); + if (surface == NULL) + return XrStatusNoMemory; + + status = _XrGStateSetTargetSurface (gstate, surface); + + XrSurfaceDestroy (surface); + + return status; } XrStatus @@ -307,7 +317,13 @@ XrStatus _XrGStateSetRGBColor(XrGState *gstate, double red, double green, double blue) { _XrColorSetRGB(&gstate->color, red, green, blue); - _XrSurfaceSetSolidColor(gstate->src, &gstate->color); + + XrSurfaceDestroy(gstate->solid); + gstate->solid = XrSurfaceCreateNextToSolid (gstate->surface, XrFormatARGB32, + 1, 1, + red, green, blue, + gstate->alpha); + XrSurfaceSetRepeat (gstate->solid, 1); return XrStatusSuccess; } @@ -324,8 +340,18 @@ XrStatus _XrGStateSetAlpha(XrGState *gstate, double alpha) { gstate->alpha = alpha; + _XrColorSetAlpha(&gstate->color, alpha); - _XrSurfaceSetSolidColor(gstate->src, &gstate->color); + + XrSurfaceDestroy (gstate->solid); + gstate->solid = XrSurfaceCreateNextToSolid (gstate->surface, + XrFormatARGB32, + 1, 1, + gstate->color.red, + gstate->color.green, + gstate->color.blue, + gstate->color.alpha); + XrSurfaceSetRepeat (gstate->solid, 1); return XrStatusSuccess; } @@ -446,7 +472,7 @@ _XrGStateConcatMatrix(XrGState *gstate, _XrTransformInitMatrix(&tmp, a, b, c, d, tx, ty); _XrTransformMultiplyIntoRight(&tmp, &gstate->ctm); - _XrTransformComputeInverse(&tmp); + _XrTransformInvert(&tmp); _XrTransformMultiplyIntoLeft(&gstate->ctm_inverse, &tmp); return XrStatusSuccess; @@ -463,7 +489,7 @@ _XrGStateSetMatrix(XrGState *gstate, _XrTransformInitMatrix(&gstate->ctm, a, b, c, d, tx, ty); gstate->ctm_inverse = gstate->ctm; - status = _XrTransformComputeInverse(&gstate->ctm_inverse); + status = _XrTransformInvert (&gstate->ctm_inverse); if (status) return status; @@ -660,10 +686,9 @@ _XrGStateStroke(XrGState *gstate) return status; } - XcCompositeTrapezoids(gstate->dpy, gstate->operator, - _XrSurfaceGetXcSurface(gstate->src), - _XrSurfaceGetXcSurface(gstate->surface), - gstate->alphaFormat, + XcCompositeTrapezoids(gstate->operator, + gstate->pattern ? gstate->pattern->xc_surface : gstate->solid->xc_surface, + gstate->surface->xc_surface, 0, 0, traps.xtraps, traps.num_xtraps); @@ -700,10 +725,9 @@ _XrGStateFill(XrGState *gstate) return status; } - XcCompositeTrapezoids(gstate->dpy, gstate->operator, - _XrSurfaceGetXcSurface(gstate->src), - _XrSurfaceGetXcSurface(gstate->surface), - gstate->alphaFormat, + XcCompositeTrapezoids(gstate->operator, + gstate->pattern ? gstate->pattern->xc_surface : gstate->solid->xc_surface, + gstate->surface->xc_surface, 0, 0, traps.xtraps, traps.num_xtraps); @@ -749,7 +773,9 @@ _XrGStateTextExtents(XrGState *gstate, _XrFontResolveXftFont(&gstate->font, gstate, &xft_font); - XftTextExtentsUtf8(gstate->dpy, + /* XXX: Need to abandon Xft and use Xc instead */ + /* (until I do, this call will croak on IcImage XrSurfaces */ + XftTextExtentsUtf8(gstate->surface->dpy, xft_font, utf8, strlen((char *) utf8), @@ -778,11 +804,13 @@ _XrGStateShowText(XrGState *gstate, const unsigned char *utf8) _XrFontResolveXftFont(&gstate->font, gstate, &xft_font); - XftTextRenderUtf8(gstate->dpy, + /* XXX: Need to abandon Xft and use Xc instead */ + /* (until I do, this call will croak on IcImage XrSurfaces */ + XftTextRenderUtf8(gstate->surface->dpy, gstate->operator, - _XrGStateGetSrcPicture(gstate), + _XrSurfaceGetPicture (gstate->solid), xft_font, - _XrGStateGetPicture(gstate), + _XrSurfaceGetPicture (gstate->surface), 0, 0, gstate->current_pt.x, gstate->current_pt.y, @@ -818,35 +846,38 @@ _XrGStateShowImageTransform(XrGState *gstate, double c, double d, double tx, double ty) { - XrStatus status; - XrColor mask_color; - XrSurface image_surface, mask; + XrSurface *image_surface, *mask; XrTransform user_to_image, image_to_user; XrTransform image_to_device, device_to_image; double dst_x, dst_y; double dst_width, dst_height; - _XrSurfaceInit(&mask, gstate->dpy); - _XrColorInit(&mask_color); - _XrColorSetAlpha(&mask_color, gstate->alpha); - - _XrSurfaceSetSolidColor(&mask, &mask_color); - - _XrSurfaceInit(&image_surface, gstate->dpy); + mask = XrSurfaceCreateNextToSolid (gstate->surface, + XrFormatA8, + 1, 1, + 1.0, 1.0, 1.0, + gstate->alpha); + if (mask == NULL) + return XrStatusNoMemory; + XrSurfaceSetRepeat (mask, 1); - _XrSurfaceSetFormat(&image_surface, format); + image_surface = XrSurfaceCreateNextTo (gstate->surface, format, width, height); + if (image_surface == NULL) { + XrSurfaceDestroy (mask); + return XrStatusNoMemory; + } - status = _XrSurfaceSetImage(&image_surface, data,width, height, stride); - if (status) - return status; + /* XXX: Need a way to transfer bits to an XcSurface + XcPutImage (image_surface->xc_surface, data, width, height, stride); + */ _XrTransformInitMatrix(&user_to_image, a, b, c, d, tx, ty); _XrTransformMultiply(&gstate->ctm_inverse, &user_to_image, &device_to_image); - _XrSurfaceSetTransform(&image_surface, &device_to_image); + _XrSurfaceSetTransform(image_surface, &device_to_image); image_to_user = user_to_image; - _XrTransformComputeInverse(&image_to_user); - _XrTransformMultiply(&image_to_user, &gstate->ctm, &image_to_device); + _XrTransformInvert (&image_to_user); + _XrTransformMultiply (&image_to_user, &gstate->ctm, &image_to_device); dst_x = 0; dst_y = 0; @@ -856,30 +887,53 @@ _XrGStateShowImageTransform(XrGState *gstate, &dst_x, &dst_y, &dst_width, &dst_height); - XcComposite(gstate->dpy, gstate->operator, - _XrSurfaceGetXcSurface(&image_surface), - _XrSurfaceGetXcSurface(&mask), - _XrSurfaceGetXcSurface(gstate->surface), + XcComposite(gstate->operator, + image_surface->xc_surface, + mask->xc_surface, + gstate->surface->xc_surface, dst_x, dst_y, 0, 0, dst_x, dst_y, - dst_width + 1, - dst_height + 1); + dst_width + 2, + dst_height + 2); - _XrSurfaceDeinit(&image_surface); - _XrSurfaceDeinit(&mask); + XrSurfaceDestroy (image_surface); + XrSurfaceDestroy (mask); return XrStatusSuccess; } -static Picture -_XrGStateGetPicture(XrGState *gstate) +XrStatus +_XrGStateShowSurface(XrGState *gstate, + XrSurface *surface, + int x, + int y, + int width, + int height) { - return _XrSurfaceGetPicture(gstate->surface); -} + XrSurface *mask; -static Picture -_XrGStateGetSrcPicture(XrGState *gstate) -{ - return _XrSurfaceGetPicture(gstate->src); + mask = XrSurfaceCreateNextToSolid (gstate->surface, + XrFormatARGB32, + 1, 1, + 1.0, 1.0, 1.0, + gstate->alpha); + if (mask == NULL) + return XrStatusNoMemory; + + XrSurfaceSetRepeat (mask, 1); + + XcComposite (gstate->operator, + surface->xc_surface, + mask->xc_surface, + gstate->surface->xc_surface, + x, y, + 0, 0, + x, y, + width, + height); + + XrSurfaceDestroy (mask); + + return XrStatusSuccess; } diff --git a/src/xrint.h b/src/xrint.h index 89b9b45cd..763374f41 100644 --- a/src/xrint.h +++ b/src/xrint.h @@ -159,27 +159,14 @@ typedef struct _XrPen { XrPenVertex *vertex; } XrPen; -typedef struct _XrSurface { +struct _XrSurface { Display *dpy; - - Drawable drawable; - GC gc; - - unsigned int width; - unsigned int height; - unsigned int depth; - - unsigned long xc_sa_mask; - XcSurfaceAttributes xc_sa; - - XrFormat format; - XcFormat *xc_format; + char *image_data; XcSurface *xc_surface; - int needs_new_xc_surface; unsigned int ref_count; -} XrSurface; +}; typedef struct _XrColor { double red; @@ -224,8 +211,6 @@ typedef struct _XrFont { #define XR_GSTATE_MITER_LIMIT_DEFAULT 10.0 typedef struct _XrGState { - Display *dpy; - XrOperator operator; double tolerance; @@ -242,13 +227,11 @@ typedef struct _XrGState { int num_dashes; double dash_offset; - XcFormat *alphaFormat; - XrFont font; - XrSurface *parent_surface; XrSurface *surface; - XrSurface *src; + XrSurface *solid; + XrSurface *pattern; XrSurface *mask; double alpha; @@ -269,7 +252,6 @@ typedef struct _XrGState { } XrGState; struct _XrState { - Display *dpy; XrGState *stack; XrStatus status; }; @@ -306,10 +288,10 @@ typedef struct _XrFiller { /* xrstate.c */ XrState * -_XrStateCreate(Display *dpy); +_XrStateCreate(void); XrStatus -_XrStateInit(XrState *state, Display *dpy); +_XrStateInit(XrState *state); void _XrStateDeinit(XrState *xrs); @@ -325,10 +307,10 @@ _XrStatePop(XrState *xrs); /* xrgstate.c */ XrGState * -_XrGStateCreate(Display *dpy); +_XrGStateCreate(void); void -_XrGStateInit(XrGState *gstate, Display *dpy); +_XrGStateInit(XrGState *gstate); XrStatus _XrGStateInitCopy(XrGState *gstate, XrGState *other); @@ -358,6 +340,19 @@ XrStatus _XrGStateSetFormat(XrGState *gstate, XrFormat format); XrStatus +_XrGStateSetTargetSurface (XrGState *gstate, XrSurface *surface); + +XrSurface * +_XrGStateGetTargetSurface (XrGState *gstate); + +XrStatus +_XrGStateSetTargetDrawable (XrGState *gstate, + Display *dpy, + Drawable drawable, + Visual *visual, + XrFormat format); + +XrStatus _XrGStateSetOperator(XrGState *gstate, XrOperator operator); XrStatus @@ -487,6 +482,14 @@ _XrGStateShowImageTransform(XrGState *gstate, double c, double d, double tx, double ty); +XrStatus +_XrGStateShowSurface(XrGState *gstate, + XrSurface *surface, + int x, + int y, + int width, + int height); + /* xrcolor.c */ void _XrColorInit(XrColor *color); @@ -554,72 +557,28 @@ XrStatus _XrPathInterpret(XrPath *path, XrPathDirection dir, XrPathCallbacks *cb, void *closure); /* xrsurface.c */ -XrSurface * -_XrSurfaceCreate(Display *dpy); - -void -_XrSurfaceInit(XrSurface *surface, Display *dpy); - -void -_XrSurfaceDeinit(XrSurface *surface); - -void -_XrSurfaceDestroy(XrSurface *surface); void _XrSurfaceReference(XrSurface *surface); -void -_XrSurfaceDereference(XrSurface *surface); - -void -_XrSurfaceDereferenceDestroy(XrSurface *surface); - -void -_XrSurfaceSetSolidColor(XrSurface *surface, XrColor *color); - -XrStatus -_XrSurfaceSetImage(XrSurface *surface, - char *data, - unsigned int width, - unsigned int height, - unsigned int stride); - XrStatus _XrSurfaceSetTransform(XrSurface *surface, XrTransform *transform); -void -_XrSurfaceSetDrawable(XrSurface *surface, Drawable drawable); - -void -_XrSurfaceSetDrawableWH(XrSurface *surface, - Drawable drawable, - unsigned int width, - unsigned int height); - -void -_XrSurfaceSetVisual(XrSurface *surface, Visual *visual); - -void -_XrSurfaceSetFormat(XrSurface *surface, XrFormat format); - XcSurface * _XrSurfaceGetXcSurface(XrSurface *surface); +/* XXX: This function is going away, right? */ Picture _XrSurfaceGetPicture(XrSurface *surface); -Drawable -_XrSurfaceGetDrawable(XrSurface *surface); - -unsigned int -_XrSurfaceGetWidth(XrSurface *surface); - -unsigned int -_XrSurfaceGetHeight(XrSurface *surface); - -unsigned int -_XrSurfaceGetDepth(XrSurface *surface); +void +_XrSurfaceFillRectangle (XrSurface *surface, + XrOperator operator, + XrColor *color, + int x, + int y, + int width, + int height); /* xrpen.c */ XrStatus @@ -762,13 +721,13 @@ _XrTransformBoundingBox(XrTransform *transform, double *width, double *height); XrStatus -_XrTransformComputeInverse(XrTransform *transform); +_XrTransformInvert(XrTransform *transform); void _XrTransformComputeDeterminant(XrTransform *transform, double *det); void -_XrTransformEigenValues(XrTransform *transform, double *lambda1, double *lambda2); +_XrTransformComputeEigenValues(XrTransform *transform, double *lambda1, double *lambda2); /* xrtraps.c */ void diff --git a/src/xrstate.c b/src/xrstate.c index 720f33705..92768097b 100644 --- a/src/xrstate.c +++ b/src/xrstate.c @@ -27,7 +27,7 @@ #include "xrint.h" XrState * -_XrStateCreate(Display *dpy) +_XrStateCreate(void) { XrStatus status; XrState *xrs; @@ -35,7 +35,7 @@ _XrStateCreate(Display *dpy) xrs = malloc(sizeof(XrState)); if (xrs) { - status = _XrStateInit(xrs, dpy); + status = _XrStateInit(xrs); if (status) { free(xrs); return NULL; @@ -46,9 +46,8 @@ _XrStateCreate(Display *dpy) } XrStatus -_XrStateInit(XrState *xrs, Display *dpy) +_XrStateInit(XrState *xrs) { - xrs->dpy = dpy; xrs->stack = NULL; xrs->status = XrStatusSuccess; @@ -79,7 +78,7 @@ _XrStatePush(XrState *xrs) if (xrs->stack) { top = _XrGStateClone(xrs->stack); } else { - top = _XrGStateCreate(xrs->dpy); + top = _XrGStateCreate(); } if (top == NULL) diff --git a/src/xrsurface.c b/src/xrsurface.c index d3a849a55..a1dd69f00 100644 --- a/src/xrsurface.c +++ b/src/xrsurface.c @@ -28,151 +28,238 @@ #include "xrint.h" XrSurface * -_XrSurfaceCreate(Display *dpy) +XrSurfaceCreateForDrawable (Display *dpy, + Drawable drawable, + Visual *visual, + XrFormat format, + Colormap colormap) { XrSurface *surface; surface = malloc(sizeof(XrSurface)); + if (surface == NULL) + return NULL; + + surface->dpy = dpy; + surface->image_data = NULL; - if (surface) - _XrSurfaceInit(surface, dpy); + surface->xc_surface = XcSurfaceCreateForDrawable (dpy, drawable, visual, format, colormap); + if (surface->xc_surface == NULL) { + free (surface); + return NULL; + } + + surface->ref_count = 1; return surface; } -void -_XrSurfaceInit(XrSurface *surface, Display *dpy) -{ - surface->dpy = dpy; +/* XXX: These definitions are 100% bogus. The problem that needs to be + fixed is that Ic needs to export a real API for passing in + formats. */ +#define PICT_FORMAT(bpp,type,a,r,g,b) (((bpp) << 24) | \ + ((type) << 16) | \ + ((a) << 12) | \ + ((r) << 8) | \ + ((g) << 4) | \ + ((b))) - surface->drawable = 0; - surface->gc = 0; +/* + * gray/color formats use a visual index instead of argb + */ +#define PICT_VISFORMAT(bpp,type,vi) (((bpp) << 24) | \ + ((type) << 16) | \ + ((vi))) - surface->width = 0; - surface->height = 0; - surface->depth = 0; +#define PICT_TYPE_A 1 +#define PICT_TYPE_ARGB 2 - surface->xc_sa_mask = 0; +#define PICT_FORMAT_COLOR(f) (PICT_FORMAT_TYPE(f) & 2) - _XrSurfaceSetFormat(surface, XrFormatARGB32); +/* 32bpp formats */ - surface->xc_surface = 0; - surface->needs_new_xc_surface = 1; +#define PICT_a8r8g8b8 PICT_FORMAT(32,PICT_TYPE_ARGB,8,8,8,8) +#define PICT_x8r8g8b8 PICT_FORMAT(32,PICT_TYPE_ARGB,0,8,8,8) +#define PICT_a8 PICT_FORMAT(8,PICT_TYPE_A,8,0,0,0) +#define PICT_a1 PICT_FORMAT(1,PICT_TYPE_A,1,0,0,0) - surface->ref_count = 0; +static int +_XrFormatBPP (XrFormat format) +{ + switch (format) { + case XrFormatA1: + return 1; + break; + case XrFormatA8: + return 8; + break; + case XrFormatARGB32: + case XrFormatRGB32: + default: + return 32; + break; + } } -void -_XrSurfaceDeinit(XrSurface *surface) +XrSurface * +XrSurfaceCreateForImage (char *data, + XrFormat format, + int width, + int height, + int stride) { - if (surface->xc_surface) - XcFreeSurface(surface->dpy, surface->xc_surface); - if (surface->gc) - XFreeGC(surface->dpy, surface->gc); + XrSurface *surface; + IcFormat icformat; + IcImage *image; + int bpp; + + /* XXX: This all needs to change, (but IcFormatInit interface needs to change first) */ + switch (format) { + case XrFormatARGB32: + IcFormatInit (&icformat, PICT_a8r8g8b8); + bpp = 32; + break; + case XrFormatRGB32: + IcFormatInit (&icformat, PICT_x8r8g8b8); + bpp = 32; + break; + case XrFormatA8: + IcFormatInit (&icformat, PICT_a8); + bpp = 8; + break; + case XrFormatA1: + IcFormatInit (&icformat, PICT_a1); + bpp = 1; + break; + default: + return NULL; + } + + surface = malloc(sizeof(XrSurface)); + if (surface == NULL) + return NULL; + + surface->dpy = NULL; + surface->image_data = NULL; + image = IcImageCreateForData ((IcBits *) data, &icformat, width, height, _XrFormatBPP (format), stride); + if (image == NULL) { + free (surface); + return NULL; + } + + surface->xc_surface = XcSurfaceCreateForIcImage (image); + if (surface->xc_surface == NULL) { + IcImageDestroy (image); + free (surface); + return NULL; + } + + surface->ref_count = 1; + + return surface; } -void -_XrSurfaceDestroy(XrSurface *surface) +XrSurface * +XrSurfaceCreateNextTo (XrSurface *neighbor, XrFormat format, int width, int height) { - _XrSurfaceDeinit(surface); - free(surface); + return XrSurfaceCreateNextToSolid (neighbor, format, width, height, 0, 0, 0, 0); } -void -_XrSurfaceReference(XrSurface *surface) +static int +_XrFormatDepth (XrFormat format) { - surface->ref_count++; + switch (format) { + case XrFormatA1: + return 1; + case XrFormatA8: + return 8; + case XrFormatARGB32: + case XrFormatRGB32: + default: + return 32; + } } -void -_XrSurfaceDereference(XrSurface *surface) +XrSurface * +XrSurfaceCreateNextToSolid (XrSurface *neighbor, + XrFormat format, + int width, + int height, + double red, + double green, + double blue, + double alpha) { - if (surface->ref_count == 0) - _XrSurfaceDeinit(surface); - else - surface->ref_count--; + XrSurface *surface = NULL; + XrColor color; + + /* XXX: CreateNextTo should perhaps move down to Xc, (then we + could drop xrsurface->dpy as well) */ + if (neighbor->dpy) { + Display *dpy = neighbor->dpy; + int scr = DefaultScreen (dpy); + + Pixmap pix = XCreatePixmap(dpy, + DefaultRootWindow (dpy), + width, height, + _XrFormatDepth (format)); + + surface = XrSurfaceCreateForDrawable (dpy, pix, + NULL, + format, + DefaultColormap (dpy, scr)); + XFreePixmap(surface->dpy, pix); + } else { + char *data; + int stride; + + stride = ((width * _XrFormatBPP (format)) + 7) >> 3; + data = malloc (stride * height); + if (data == NULL) + return NULL; + + surface = XrSurfaceCreateForImage (data, format, + width, height, stride); + + /* lodge data in the surface structure to be freed with the surface */ + surface->image_data = data; + } + + /* XXX: Initializing the color in this way assumes + non-pre-multiplied alpha. I'm not sure that that's what I want + to do or not. */ + _XrColorInit (&color); + _XrColorSetRGB (&color, red, green, blue); + _XrColorSetAlpha (&color, alpha); + _XrSurfaceFillRectangle (surface, XrOperatorSrc, &color, 0, 0, width, height); + return surface; } void -_XrSurfaceDereferenceDestroy(XrSurface *surface) +_XrSurfaceReference(XrSurface *surface) { - if (surface->ref_count == 0) - _XrSurfaceDestroy(surface); - else - _XrSurfaceDereference(surface); + if (surface == NULL) + return; + + surface->ref_count++; } void -_XrSurfaceSetSolidColor(XrSurface *surface, XrColor *color) +XrSurfaceDestroy(XrSurface *surface) { - /* XXX: QUESTION: Special handling for depth==1 ala xftdraw.c? */ - if (surface->xc_surface == 0) { - Pixmap pix = XCreatePixmap(surface->dpy, - DefaultRootWindow(surface->dpy), - 1, 1, - surface->xc_format->depth); - _XrSurfaceSetDrawableWH(surface, pix, 1, 1); - surface->xc_sa_mask |= CPRepeat; - surface->xc_sa.repeat = True; - _XrSurfaceGetXcSurface(surface); - XFreePixmap(surface->dpy, pix); - } - - XcFillRectangle(surface->dpy, PictOpSrc, - surface->xc_surface, &color->xc_color, - 0, 0, 1, 1); -} + if (surface == NULL) + return; -XrStatus -_XrSurfaceSetImage(XrSurface *surface, - char *data, - unsigned int width, - unsigned int height, - unsigned int stride) -{ - XImage *image; - unsigned int depth, bitmap_pad; - Pixmap pix; - - depth = surface->xc_format->depth; - - if (depth > 16) - bitmap_pad = 32; - else if (depth > 8) - bitmap_pad = 16; - else - bitmap_pad = 8; - - pix = XCreatePixmap(surface->dpy, - DefaultRootWindow(surface->dpy), - width, height, - depth); - _XrSurfaceSetDrawableWH(surface, pix, width, height); - - image = XCreateImage(surface->dpy, - DefaultVisual(surface->dpy, DefaultScreen(surface->dpy)), - depth, ZPixmap, 0, - data, width, height, - bitmap_pad, - stride); - if (image == NULL) - return XrStatusNoMemory; - - XPutImage(surface->dpy, surface->drawable, surface->gc, - image, 0, 0, 0, 0, width, height); - - - /* I want to free the pixmap, so I have to commit to an xc_surface - to reference the pixmap in the Picture. */ - _XrSurfaceGetXcSurface(surface); - XFreePixmap(surface->dpy, pix); - - /* Foolish XDestroyImage thinks it can free my data, but I won't - stand for it. */ - image->data = NULL; - XDestroyImage(image); + surface->ref_count--; + if (surface->ref_count) + return; - return XrStatusSuccess; + surface->dpy = 0; + + XcSurfaceDestroy (surface->xc_surface); + surface->xc_surface = NULL; + + free(surface); } /* XXX: We may want to move to projective matrices at some point. If @@ -195,129 +282,50 @@ _XrSurfaceSetTransform(XrSurface *surface, XrTransform *transform) xtransform.matrix[2][1] = 0; xtransform.matrix[2][2] = XDoubleToFixed(1); - XcSetSurfaceTransform(surface->dpy, - _XrSurfaceGetXcSurface(surface), + XcSurfaceSetTransform(surface->xc_surface, &xtransform); return XrStatusSuccess; } -void -_XrSurfaceSetDrawable(XrSurface *surface, Drawable drawable) -{ - Window root; - int x, y; - unsigned int border, depth; - unsigned int width, height; - - XGetGeometry (surface->dpy, drawable, - &root, &x, &y, - &width, &height, - &border, &depth); - - _XrSurfaceSetDrawableWH(surface, drawable, width, height); -} - -void -_XrSurfaceSetDrawableWH(XrSurface *surface, - Drawable drawable, - unsigned int width, - unsigned int height) -{ - if (surface->gc) - XFreeGC(surface->dpy, surface->gc); - - surface->drawable = drawable; - surface->width = width; - surface->height = height; - surface->gc = XCreateGC(surface->dpy, surface->drawable, 0, 0); - - surface->needs_new_xc_surface = 1; -} - -void -_XrSurfaceSetVisual(XrSurface *surface, Visual *visual) -{ - surface->xc_format = XcFindVisualFormat(surface->dpy, visual); - surface->needs_new_xc_surface = 1; -} - -void -_XrSurfaceSetFormat(XrSurface *surface, XrFormat format) +/* XXX: The Xc version of this function isn't quite working yet +XrStatus +XrSurfaceSetClipRegion (XrSurface *surface, Region region) { - surface->format = format; - surface->xc_format = XcFindStandardFormat(surface->dpy, format); - - switch (surface->format) { - case XrFormatARGB32: - surface->depth = 32; - case XrFormatRGB32: - /* XXX: Is this correct? */ - surface->depth = 24; - case XrFormatA8: - surface->depth = 8; - case XrFormatA1: - surface->depth = 1; - default: - surface->depth = 32; - } + XcSurfaceSetClipRegion (surface->xc_surface, region); - surface->needs_new_xc_surface = 1; + return XrStatusSuccess; } +*/ -XcSurface * -_XrSurfaceGetXcSurface(XrSurface *surface) +XrStatus +XrSurfaceSetRepeat (XrSurface *surface, int repeat) { - if (surface == NULL) - return NULL; + XcSurfaceSetRepeat (surface->xc_surface, repeat); - if (! surface->needs_new_xc_surface) - return surface->xc_surface; - - if (surface->xc_surface) - XcFreeSurface(surface->dpy, surface->xc_surface); - - if (surface->drawable) - surface->xc_surface = XcCreateDrawableSurface(surface->dpy, - surface->drawable, - surface->xc_format, - surface->xc_sa_mask, - &surface->xc_sa); - else - /* XXX: Is this what we wnat to do here? */ - surface->xc_surface = 0; - - surface->needs_new_xc_surface = 0; - - return surface->xc_surface; + return XrStatusSuccess; } +/* XXX: This function is going away, right? */ Picture _XrSurfaceGetPicture(XrSurface *surface) { - return XcSurfaceGetPicture(_XrSurfaceGetXcSurface(surface)); -} - -Drawable -_XrSurfaceGetDrawable(XrSurface *surface) -{ - return surface->drawable; -} - -unsigned int -_XrSurfaceGetWidth(XrSurface *surface) -{ - return surface->width; + return XcSurfaceGetPicture(surface->xc_surface); } -unsigned int -_XrSurfaceGetHeight(XrSurface *surface) +void +_XrSurfaceFillRectangle (XrSurface *surface, + XrOperator operator, + XrColor *color, + int x, + int y, + int width, + int height) { - return surface->height; + XcFillRectangle (operator, + surface->xc_surface, + &color->xc_color, + x, y, + width, height); } -unsigned int -_XrSurfaceGetDepth(XrSurface *surface) -{ - return surface->depth; -} diff --git a/src/xrtransform.c b/src/xrtransform.c index 93e7ea235..e8eee7ee1 100644 --- a/src/xrtransform.c +++ b/src/xrtransform.c @@ -241,18 +241,18 @@ _XrTransformComputeAdjoint(XrTransform *transform) } XrStatus -_XrTransformComputeInverse(XrTransform *transform) +_XrTransformInvert (XrTransform *transform) { /* inv(A) = 1/det(A) * adj(A) */ double det; - _XrTransformComputeDeterminant(transform, &det); + _XrTransformComputeDeterminant (transform, &det); if (det == 0) return XrStatusInvalidMatrix; - _XrTransformComputeAdjoint(transform); - _XrTransformScalarMultiply(transform, 1 / det); + _XrTransformComputeAdjoint (transform); + _XrTransformScalarMultiply (transform, 1 / det); return XrStatusSuccess; } @@ -269,7 +269,7 @@ _XrTransformComputeDeterminant(XrTransform *transform, double *det) } void -_XrTransformEigenValues(XrTransform *transform, double *lambda1, double *lambda2) +_XrTransformComputeEigenValues (XrTransform *transform, double *lambda1, double *lambda2) { /* The eigenvalues of an NxN matrix M are found by solving the polynomial: @@ -1,513 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Carl D. Worth - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Carl - * D. Worth not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Carl D. Worth makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, - * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "xrint.h" - -#define _XR_CURRENT_GSTATE(xrs) (xrs->stack) - -#define XR_TOLERANCE_MINIMUM 0.0002 /* We're limited by 16 bits of sub-pixel precision */ - -static void -_XrClipValue(double *value, double min, double max); - -XrState * -XrCreate(Display *dpy) -{ - return _XrStateCreate(dpy); -} - -void -XrDestroy(XrState *xrs) -{ - _XrStateDestroy(xrs); -} - -void -XrSave(XrState *xrs) -{ - if (xrs->status) - return; - - xrs->status = _XrStatePush(xrs); -} - -void -XrRestore(XrState *xrs) -{ - if (xrs->status) - return; - - xrs->status = _XrStatePop(xrs); -} - -void -XrPushGroup(XrState *xrs) -{ - if (xrs->status) - return; - - xrs->status = _XrStatePush(xrs); - if (xrs->status) - return; - - xrs->status = _XrGStateBeginGroup(_XR_CURRENT_GSTATE(xrs)); -} - -void -XrPopGroup(XrState *xrs) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateEndGroup(_XR_CURRENT_GSTATE(xrs)); - if (xrs->status) - return; - - xrs->status = _XrStatePop(xrs); -} - -void -XrSetDrawable(XrState *xrs, Drawable drawable) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateSetDrawable(_XR_CURRENT_GSTATE(xrs), drawable); -} - -void -XrSetVisual(XrState *xrs, Visual *visual) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateSetVisual(_XR_CURRENT_GSTATE(xrs), visual); -} - -void -XrSetFormat(XrState *xrs, XrFormat format) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateSetFormat(_XR_CURRENT_GSTATE(xrs), format); -} - -void -XrSetOperator(XrState *xrs, XrOperator operator) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateSetOperator(_XR_CURRENT_GSTATE(xrs), operator); -} - -void -XrSetRGBColor(XrState *xrs, double red, double green, double blue) -{ - if (xrs->status) - return; - - _XrClipValue(&red, 0.0, 1.0); - _XrClipValue(&green, 0.0, 1.0); - _XrClipValue(&blue, 0.0, 1.0); - - xrs->status = _XrGStateSetRGBColor(_XR_CURRENT_GSTATE(xrs), red, green, blue); -} - -void -XrSetTolerance(XrState *xrs, double tolerance) -{ - if (xrs->status) - return; - - _XrClipValue(&tolerance, XR_TOLERANCE_MINIMUM, tolerance); - - xrs->status = _XrGStateSetTolerance(_XR_CURRENT_GSTATE(xrs), tolerance); -} - -void -XrSetAlpha(XrState *xrs, double alpha) -{ - if (xrs->status) - return; - - _XrClipValue(&alpha, 0.0, 1.0); - - xrs->status = _XrGStateSetAlpha(_XR_CURRENT_GSTATE(xrs), alpha); -} - -void -XrSetFillRule(XrState *xrs, XrFillRule fill_rule) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateSetFillRule(_XR_CURRENT_GSTATE(xrs), fill_rule); -} - -void -XrSetLineWidth(XrState *xrs, double width) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateSetLineWidth(_XR_CURRENT_GSTATE(xrs), width); -} - -void -XrSetLineCap(XrState *xrs, XrLineCap line_cap) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateSetLineCap(_XR_CURRENT_GSTATE(xrs), line_cap); -} - -void -XrSetLineJoin(XrState *xrs, XrLineJoin line_join) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateSetLineJoin(_XR_CURRENT_GSTATE(xrs), line_join); -} - -void -XrSetDash(XrState *xrs, double *dashes, int ndash, double offset) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateSetDash(_XR_CURRENT_GSTATE(xrs), dashes, ndash, offset); -} - -void -XrSetMiterLimit(XrState *xrs, double limit) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateSetMiterLimit(_XR_CURRENT_GSTATE(xrs), limit); -} - -void -XrTranslate(XrState *xrs, double tx, double ty) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateTranslate(_XR_CURRENT_GSTATE(xrs), tx, ty); -} - -void -XrScale(XrState *xrs, double sx, double sy) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateScale(_XR_CURRENT_GSTATE(xrs), sx, sy); -} - -void -XrRotate(XrState *xrs, double angle) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateRotate(_XR_CURRENT_GSTATE(xrs), angle); -} - -void -XrConcatMatrix(XrState *xrs, - double a, double b, - double c, double d, - double tx, double ty) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateConcatMatrix(_XR_CURRENT_GSTATE(xrs), a, b, c, d, tx, ty); -} - -void -XrSetMatrix(XrState *xrs, - double a, double b, - double c, double d, - double tx, double ty) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateSetMatrix(_XR_CURRENT_GSTATE(xrs), a, b, c, d, tx, ty); -} - -void -XrDefaultMatrix(XrState *xrs) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateIdentityMatrix(_XR_CURRENT_GSTATE(xrs)); -} - -void -XrIdentityMatrix(XrState *xrs) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateIdentityMatrix(_XR_CURRENT_GSTATE(xrs)); -} - -void -XrNewPath(XrState *xrs) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateNewPath(_XR_CURRENT_GSTATE(xrs)); -} - -void -XrMoveTo(XrState *xrs, double x, double y) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateMoveTo(_XR_CURRENT_GSTATE(xrs), x, y); -} - -void -XrLineTo(XrState *xrs, double x, double y) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateLineTo(_XR_CURRENT_GSTATE(xrs), x, y); -} - -void -XrCurveTo(XrState *xrs, - double x1, double y1, - double x2, double y2, - double x3, double y3) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateCurveTo(_XR_CURRENT_GSTATE(xrs), - x1, y1, - x2, y2, - x3, y3); -} - -void -XrRelMoveTo(XrState *xrs, double dx, double dy) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateRelMoveTo(_XR_CURRENT_GSTATE(xrs), dx, dy); -} - -void -XrRelLineTo(XrState *xrs, double dx, double dy) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateRelLineTo(_XR_CURRENT_GSTATE(xrs), dx, dy); -} - -void -XrRelCurveTo(XrState *xrs, - double dx1, double dy1, - double dx2, double dy2, - double dx3, double dy3) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateRelCurveTo(_XR_CURRENT_GSTATE(xrs), - dx1, dy1, - dx2, dy2, - dx3, dy3); -} - -void -XrClosePath(XrState *xrs) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateClosePath(_XR_CURRENT_GSTATE(xrs)); -} - -void -XrStroke(XrState *xrs) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateStroke(_XR_CURRENT_GSTATE(xrs)); -} - -void -XrFill(XrState *xrs) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateFill(_XR_CURRENT_GSTATE(xrs)); -} - -void -XrSelectFont(XrState *xrs, const char *key) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateSelectFont(_XR_CURRENT_GSTATE(xrs), key); -} - -void -XrScaleFont(XrState *xrs, double scale) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateScaleFont(_XR_CURRENT_GSTATE(xrs), scale); -} - -void -XrTransformFont(XrState *xrs, - double a, double b, - double c, double d) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateTransformFont(_XR_CURRENT_GSTATE(xrs), - a, b, c, d); -} - -void -XrTextExtents(XrState *xrs, - const unsigned char *utf8, - double *x, double *y, - double *width, double *height, - double *dx, double *dy) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateTextExtents(_XR_CURRENT_GSTATE(xrs), utf8, - x, y, width, height, dx, dy); -} - -void -XrShowText(XrState *xrs, const unsigned char *utf8) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateShowText(_XR_CURRENT_GSTATE(xrs), utf8); -} - -void -XrShowImage(XrState *xrs, - char *data, - XrFormat format, - unsigned int width, - unsigned int height, - unsigned int stride) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateShowImage(_XR_CURRENT_GSTATE(xrs), - data, format, - width, height, stride); -} - -void -XrShowImageTransform(XrState *xrs, - char *data, - XrFormat format, - unsigned int width, - unsigned int height, - unsigned int stride, - double a, double b, - double c, double d, - double tx, double ty) -{ - if (xrs->status) - return; - - xrs->status = _XrGStateShowImageTransform(_XR_CURRENT_GSTATE(xrs), - data, format, - width, height, stride, - a, b, - c, d, - tx, ty); -} - - -XrStatus -XrGetStatus(XrState *xrs) -{ - return xrs->status; -} - -const char * -XrGetStatusString(XrState *xrs) -{ - switch (xrs->status) { - case XrStatusSuccess: - return "success"; - case XrStatusNoMemory: - return "out of memory"; - case XrStatusInvalidRestore: - return "XrRestore without matching XrSave"; - case XrStatusInvalidPopGroup: - return "XrPopGroup without matching XrPushGroup"; - case XrStatusNoCurrentPoint: - return "no current point defined"; - case XrStatusInvalidMatrix: - return "invalid matrix (not invertible)"; - } - - return ""; -} - -static void -_XrClipValue(double *value, double min, double max) -{ - if (*value < min) - *value = min; - else if (*value > max) - *value = max; -} diff --git a/xrcolor.c b/xrcolor.c deleted file mode 100644 index 99d0a2c30..000000000 --- a/xrcolor.c +++ /dev/null @@ -1,70 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Carl D. Worth - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Carl - * D. Worth not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Carl D. Worth makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, - * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "xrint.h" - -static XrColor XR_COLOR_DEFAULT = { 1.0, 1.0, 1.0, 1.0, {0xffff, 0xffff, 0xffff, 0xffff}}; - -static void -_XrColorComputeXcColor(XrColor *color); - -void -_XrColorInit(XrColor *color) -{ - *color = XR_COLOR_DEFAULT; -} - -void -_XrColorDeinit(XrColor *color) -{ - /* Nothing to do here */ -} - -static void -_XrColorComputeXcColor(XrColor *color) -{ - color->xc_color.red = color->red * color->alpha * 0xffff; - color->xc_color.green = color->green * color->alpha * 0xffff; - color->xc_color.blue = color->blue * color->alpha * 0xffff; - color->xc_color.alpha = color->alpha * 0xffff; -} - -void -_XrColorSetRGB(XrColor *color, double red, double green, double blue) -{ - color->red = red; - color->green = green; - color->blue = blue; - - _XrColorComputeXcColor(color); -} - -void -_XrColorSetAlpha(XrColor *color, double alpha) -{ - color->alpha = alpha; - - _XrColorComputeXcColor(color); -} diff --git a/xrfiller.c b/xrfiller.c deleted file mode 100644 index 79015e19c..000000000 --- a/xrfiller.c +++ /dev/null @@ -1,103 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Carl D. Worth - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Carl - * D. Worth not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Carl D. Worth makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, - * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "xrint.h" - -void -_XrFillerInit(XrFiller *filler, XrGState *gstate, XrTraps *traps) -{ - filler->gstate = gstate; - filler->traps = traps; - - _XrPolygonInit(&filler->polygon); -} - -void -_XrFillerDeinit(XrFiller *filler) -{ - _XrPolygonDeinit(&filler->polygon); -} - -XrStatus -_XrFillerAddEdge(void *closure, XPointFixed *p1, XPointFixed *p2) -{ - XrFiller *filler = closure; - XrPolygon *polygon = &filler->polygon; - - return _XrPolygonAddEdge(polygon, p1, p2); -} - -XrStatus -_XrFillerAddSpline (void *closure, XPointFixed *a, XPointFixed *b, XPointFixed *c, XPointFixed *d) -{ - int i; - XrStatus status = XrStatusSuccess; - XrFiller *filler = closure; - XrPolygon *polygon = &filler->polygon; - XrGState *gstate = filler->gstate; - XrSpline spline; - - status = _XrSplineInit(&spline, a, b, c, d); - if (status == XrIntStatusDegenerate) - return XrStatusSuccess; - - _XrSplineDecompose(&spline, gstate->tolerance); - if (status) - goto CLEANUP_SPLINE; - - for (i = 0; i < spline.num_pts - 1; i++) { - status = _XrPolygonAddEdge(polygon, &spline.pts[i], &spline.pts[i+1]); - if (status) - goto CLEANUP_SPLINE; - } - - CLEANUP_SPLINE: - _XrSplineDeinit(&spline); - - return status; -} - -XrStatus -_XrFillerDoneSubPath (void *closure, XrSubPathDone done) -{ - XrStatus status = XrStatusSuccess; - XrFiller *filler = closure; - XrPolygon *polygon = &filler->polygon; - - _XrPolygonClose(polygon); - - return status; -} - -XrStatus -_XrFillerDonePath (void *closure) -{ - XrFiller *filler = closure; - - return _XrTrapsTessellatePolygon(filler->traps, - &filler->polygon, - filler->gstate->fill_rule); -} - diff --git a/xrfont.c b/xrfont.c deleted file mode 100644 index d1416bce8..000000000 --- a/xrfont.c +++ /dev/null @@ -1,170 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Carl D. Worth - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Carl - * D. Worth not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Carl D. Worth makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, - * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include <string.h> - -#include "xrint.h" - -void -_XrFontInit(XrFont *font) -{ - font->key = (unsigned char *) strdup(XR_FONT_KEY_DEFAULT); - - font->scale = 1.0; - font->has_transform = 0; - - font->dpy = NULL; - font->xft_font = NULL; -} - -XrStatus -_XrFontInitCopy(XrFont *font, XrFont *other) -{ - *font = *other; - - if (other->key) { - font->key = (unsigned char *) strdup((char *) other->key); - if (font->key == NULL) - return XrStatusNoMemory; - } - - if (other->xft_font) { - font->xft_font = XftFontCopy(other->dpy, other->xft_font); - if (font->xft_font == NULL) - return XrStatusNoMemory; - } - - return XrStatusSuccess; -} - -void -_XrFontDeinit(XrFont *font) -{ - if (font->key) - free(font->key); - font->key = NULL; - - _XrTransformDeinit(&font->transform); - - if (font->xft_font) - XftFontClose(font->dpy, font->xft_font); - font->xft_font = NULL; -} - -XrStatus -_XrFontSelect(XrFont *font, const char *key) -{ - if (font->xft_font) - XftFontClose(font->dpy, font->xft_font); - font->xft_font = NULL; - - if (font->key) - free(font->key); - - font->key = (unsigned char *) strdup((char *) key); - if (font->key == NULL) - return XrStatusNoMemory; - - return XrStatusSuccess; -} - -XrStatus -_XrFontScale(XrFont *font, double scale) -{ - if (font->has_transform) { - XrTransform tmp; - - _XrTransformInitScale(&tmp, scale, scale); - _XrTransformMultiplyIntoRight(&tmp, &font->transform); - } else { - font->scale *= scale; - } - - return XrStatusSuccess; -} - -XrStatus -_XrFontTransform(XrFont *font, - double a, double b, - double c, double d) -{ - XrTransform tmp; - - if (! font->has_transform) { - _XrTransformInitScale(&tmp, font->scale, font->scale); - } - - _XrTransformInitMatrix(&tmp, a, b, c, d, 0, 0); - _XrTransformMultiplyIntoRight(&tmp, &font->transform); - - font->has_transform = 1; - - return XrStatusSuccess; -} - -XrStatus -_XrFontResolveXftFont(XrFont *font, XrGState *gstate, XftFont **xft_font) -{ - FcPattern *pattern; - FcPattern *match; - FcResult result; - XrTransform matrix; - FcMatrix fc_matrix; - - if (font->xft_font) { - *xft_font = font->xft_font; - return XrStatusSuccess; - } - - pattern = FcNameParse(font->key); - - matrix = gstate->ctm; - - if (!font->has_transform) { - FcPatternAddDouble(pattern, "pixelsize", font->scale); - } else { - _XrTransformMultiplyIntoRight(&font->transform, &matrix); - } - - fc_matrix.xx = matrix.m[0][0]; - fc_matrix.xy = matrix.m[0][1]; - fc_matrix.yx = matrix.m[1][0]; - fc_matrix.yy = matrix.m[1][1]; - - FcPatternAddMatrix(pattern, "matrix", &fc_matrix); - - font->dpy = gstate->dpy; - match = XftFontMatch (font->dpy, DefaultScreen(font->dpy), pattern, &result); - if (!match) - return 0; - - font->xft_font = XftFontOpenPattern (font->dpy, match); - - *xft_font = font->xft_font; - - FcPatternDestroy (pattern); - - return XrStatusSuccess; -} diff --git a/xrgstate.c b/xrgstate.c deleted file mode 100644 index 90a4e7732..000000000 --- a/xrgstate.c +++ /dev/null @@ -1,885 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Carl D. Worth - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Carl - * D. Worth not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Carl D. Worth makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, - * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include <stdlib.h> -#include <math.h> - -#include "xrint.h" - -static Picture -_XrGStateGetPicture(XrGState *gstate); - -static Picture -_XrGStateGetSrcPicture(XrGState *gstate); - -XrGState * -_XrGStateCreate(Display *dpy) -{ - XrGState *gstate; - - gstate = malloc(sizeof(XrGState)); - - if (gstate) - _XrGStateInit(gstate, dpy); - - return gstate; -} - -void -_XrGStateInit(XrGState *gstate, Display *dpy) -{ - gstate->dpy = dpy; - - gstate->operator = XR_GSTATE_OPERATOR_DEFAULT; - - gstate->tolerance = XR_GSTATE_TOLERANCE_DEFAULT; - - gstate->line_width = XR_GSTATE_LINE_WIDTH_DEFAULT; - gstate->line_cap = XR_GSTATE_LINE_CAP_DEFAULT; - gstate->line_join = XR_GSTATE_LINE_JOIN_DEFAULT; - gstate->miter_limit = XR_GSTATE_MITER_LIMIT_DEFAULT; - - gstate->fill_rule = XR_GSTATE_FILL_RULE_DEFAULT; - - gstate->dash = NULL; - gstate->num_dashes = 0; - gstate->dash_offset = 0.0; - - gstate->alphaFormat = XcFindStandardFormat(dpy, PictStandardA8); - - _XrFontInit(&gstate->font); - - gstate->parent_surface = NULL; - gstate->surface = _XrSurfaceCreate(dpy); - gstate->src = _XrSurfaceCreate(dpy); - gstate->mask = NULL; - - gstate->alpha = 1.0; - _XrColorInit(&gstate->color); - _XrSurfaceSetSolidColor(gstate->src, &gstate->color); - - _XrTransformInitIdentity(&gstate->ctm); - _XrTransformInitIdentity(&gstate->ctm_inverse); - - _XrPathInit(&gstate->path); - - gstate->has_current_pt = 0; - - _XrPenInitEmpty(&gstate->pen_regular); - - gstate->next = NULL; -} - -XrStatus -_XrGStateInitCopy(XrGState *gstate, XrGState *other) -{ - XrStatus status; - - *gstate = *other; - if (other->dash) { - gstate->dash = malloc (other->num_dashes * sizeof (double)); - if (gstate->dash == NULL) - return XrStatusNoMemory; - memcpy(gstate->dash, other->dash, other->num_dashes * sizeof (double)); - } - - status = _XrFontInitCopy(&gstate->font, &other->font); - if (status) - goto CLEANUP_DASHES; - - gstate->parent_surface = NULL; - _XrSurfaceReference(gstate->surface); - _XrSurfaceReference(gstate->src); - if (gstate->mask) - _XrSurfaceReference(gstate->mask); - - status = _XrPathInitCopy(&gstate->path, &other->path); - if (status) - goto CLEANUP_FONT; - - status = _XrPenInitCopy(&gstate->pen_regular, &other->pen_regular); - if (status) - goto CLEANUP_PATH; - - return status; - - CLEANUP_PATH: - _XrPathDeinit(&gstate->path); - CLEANUP_FONT: - _XrFontDeinit(&gstate->font); - CLEANUP_DASHES: - free (gstate->dash); - gstate->dash = NULL; - - return status; -} - -void -_XrGStateDeinit(XrGState *gstate) -{ - if (gstate->parent_surface) - _XrGStateEndGroup(gstate); - - _XrFontDeinit(&gstate->font); - - _XrSurfaceDereferenceDestroy(gstate->surface); - _XrSurfaceDereferenceDestroy(gstate->src); - if (gstate->mask) - _XrSurfaceDereferenceDestroy(gstate->mask); - - _XrColorDeinit(&gstate->color); - - _XrTransformDeinit(&gstate->ctm); - _XrTransformDeinit(&gstate->ctm_inverse); - - _XrPathDeinit(&gstate->path); - - _XrPenDeinit(&gstate->pen_regular); - - if (gstate->dash) { - free (gstate->dash); - gstate->dash = NULL; - } -} - -void -_XrGStateDestroy(XrGState *gstate) -{ - _XrGStateDeinit(gstate); - free(gstate); -} - -XrGState* -_XrGStateClone(XrGState *gstate) -{ - XrStatus status; - XrGState *clone; - - clone = malloc(sizeof(XrGState)); - if (clone) { - status = _XrGStateInitCopy(clone, gstate); - if (status) { - free(clone); - return NULL; - } - } - - return clone; -} - -/* Push rendering off to an off-screen group. */ -XrStatus -_XrGStateBeginGroup(XrGState *gstate) -{ - Pixmap pix; - XrColor clear; - unsigned int width, height; - - gstate->parent_surface = gstate->surface; - - width = _XrSurfaceGetWidth(gstate->surface); - height = _XrSurfaceGetHeight(gstate->surface); - - pix = XCreatePixmap(gstate->dpy, - _XrSurfaceGetDrawable(gstate->surface), - width, height, - _XrSurfaceGetDepth(gstate->surface)); - if (pix == 0) - return XrStatusNoMemory; - - gstate->surface = _XrSurfaceCreate(gstate->dpy); - if (gstate->surface == NULL) - return XrStatusNoMemory; - - _XrSurfaceSetDrawableWH(gstate->surface, pix, width, height); - - _XrColorInit(&clear); - _XrColorSetAlpha(&clear, 0); - - XcFillRectangle(gstate->dpy, - XrOperatorSrc, - _XrSurfaceGetXcSurface(gstate->surface), - &clear.xc_color, - 0, 0, - _XrSurfaceGetWidth(gstate->surface), - _XrSurfaceGetHeight(gstate->surface)); - - return XrStatusSuccess; -} - -/* Complete the current offscreen group, composing its contents onto the parent surface. */ -XrStatus -_XrGStateEndGroup(XrGState *gstate) -{ - Pixmap pix; - XrColor mask_color; - XrSurface mask; - - if (gstate->parent_surface == NULL) - return XrStatusInvalidPopGroup; - - _XrSurfaceInit(&mask, gstate->dpy); - _XrColorInit(&mask_color); - _XrColorSetAlpha(&mask_color, gstate->alpha); - - _XrSurfaceSetSolidColor(&mask, &mask_color); - - /* XXX: This could be made much more efficient by using - _XrSurfaceGetDamagedWidth/Height if XrSurface actually kept - track of such informaton. */ - XcComposite(gstate->dpy, gstate->operator, - _XrSurfaceGetXcSurface(gstate->surface), - _XrSurfaceGetXcSurface(&mask), - _XrSurfaceGetXcSurface(gstate->parent_surface), - 0, 0, - 0, 0, - 0, 0, - _XrSurfaceGetWidth(gstate->surface), - _XrSurfaceGetHeight(gstate->surface)); - - _XrSurfaceDeinit(&mask); - - pix = _XrSurfaceGetDrawable(gstate->surface); - XFreePixmap(gstate->dpy, pix); - - _XrSurfaceDestroy(gstate->surface); - gstate->surface = gstate->parent_surface; - gstate->parent_surface = NULL; - - return XrStatusSuccess; -} - -XrStatus -_XrGStateSetDrawable(XrGState *gstate, Drawable drawable) -{ - _XrSurfaceSetDrawable(gstate->surface, drawable); - - return XrStatusSuccess; -} - -XrStatus -_XrGStateSetVisual(XrGState *gstate, Visual *visual) -{ - _XrSurfaceSetVisual(gstate->surface, visual); - - return XrStatusSuccess; -} - -XrStatus -_XrGStateSetFormat(XrGState *gstate, XrFormat format) -{ - _XrSurfaceSetFormat(gstate->surface, format); - - return XrStatusSuccess; -} - -XrStatus -_XrGStateSetOperator(XrGState *gstate, XrOperator operator) -{ - gstate->operator = operator; - - return XrStatusSuccess; -} - -XrStatus -_XrGStateSetRGBColor(XrGState *gstate, double red, double green, double blue) -{ - _XrColorSetRGB(&gstate->color, red, green, blue); - _XrSurfaceSetSolidColor(gstate->src, &gstate->color); - - return XrStatusSuccess; -} - -XrStatus -_XrGStateSetTolerance(XrGState *gstate, double tolerance) -{ - gstate->tolerance = tolerance; - - return XrStatusSuccess; -} - -XrStatus -_XrGStateSetAlpha(XrGState *gstate, double alpha) -{ - gstate->alpha = alpha; - _XrColorSetAlpha(&gstate->color, alpha); - _XrSurfaceSetSolidColor(gstate->src, &gstate->color); - - return XrStatusSuccess; -} - -XrStatus -_XrGStateSetFillRule(XrGState *gstate, XrFillRule fill_rule) -{ - gstate->fill_rule = fill_rule; - - return XrStatusSuccess; -} - -XrStatus -_XrGStateSetLineWidth(XrGState *gstate, double width) -{ - gstate->line_width = width; - - return XrStatusSuccess; -} - -XrStatus -_XrGStateSetLineCap(XrGState *gstate, XrLineCap line_cap) -{ - gstate->line_cap = line_cap; - - return XrStatusSuccess; -} - -XrStatus -_XrGStateSetLineJoin(XrGState *gstate, XrLineJoin line_join) -{ - gstate->line_join = line_join; - - return XrStatusSuccess; -} - -XrStatus -_XrGStateSetDash(XrGState *gstate, double *dash, int num_dashes, double offset) -{ - if (gstate->dash) { - free (gstate->dash); - gstate->dash = NULL; - } - - gstate->num_dashes = num_dashes; - if (gstate->num_dashes) { - gstate->dash = malloc (gstate->num_dashes * sizeof (double)); - if (gstate->dash == NULL) { - gstate->num_dashes = 0; - return XrStatusNoMemory; - } - } - - memcpy (gstate->dash, dash, gstate->num_dashes * sizeof (double)); - gstate->dash_offset = offset; - - return XrStatusSuccess; -} - -XrStatus -_XrGStateSetMiterLimit(XrGState *gstate, double limit) -{ - gstate->miter_limit = limit; - - return XrStatusSuccess; -} - -XrStatus -_XrGStateTranslate(XrGState *gstate, double tx, double ty) -{ - XrTransform tmp; - - _XrTransformInitTranslate(&tmp, tx, ty); - _XrTransformMultiplyIntoRight(&tmp, &gstate->ctm); - - _XrTransformInitTranslate(&tmp, -tx, -ty); - _XrTransformMultiplyIntoLeft(&gstate->ctm_inverse, &tmp); - - return XrStatusSuccess; -} - -XrStatus -_XrGStateScale(XrGState *gstate, double sx, double sy) -{ - XrTransform tmp; - - _XrTransformInitScale(&tmp, sx, sy); - _XrTransformMultiplyIntoRight(&tmp, &gstate->ctm); - - _XrTransformInitScale(&tmp, 1/sx, 1/sy); - _XrTransformMultiplyIntoLeft(&gstate->ctm_inverse, &tmp); - - return XrStatusSuccess; -} - -XrStatus -_XrGStateRotate(XrGState *gstate, double angle) -{ - XrTransform tmp; - - _XrTransformInitRotate(&tmp, angle); - _XrTransformMultiplyIntoRight(&tmp, &gstate->ctm); - - _XrTransformInitRotate(&tmp, -angle); - _XrTransformMultiplyIntoLeft(&gstate->ctm_inverse, &tmp); - - return XrStatusSuccess; -} - -XrStatus -_XrGStateConcatMatrix(XrGState *gstate, - double a, double b, - double c, double d, - double tx, double ty) -{ - XrTransform tmp; - - _XrTransformInitMatrix(&tmp, a, b, c, d, tx, ty); - _XrTransformMultiplyIntoRight(&tmp, &gstate->ctm); - - _XrTransformComputeInverse(&tmp); - _XrTransformMultiplyIntoLeft(&gstate->ctm_inverse, &tmp); - - return XrStatusSuccess; -} - -XrStatus -_XrGStateSetMatrix(XrGState *gstate, - double a, double b, - double c, double d, - double tx, double ty) -{ - XrStatus status; - - _XrTransformInitMatrix(&gstate->ctm, a, b, c, d, tx, ty); - - gstate->ctm_inverse = gstate->ctm; - status = _XrTransformComputeInverse(&gstate->ctm_inverse); - if (status) - return status; - - return XrStatusSuccess; -} - -XrStatus -_XrGStateIdentityMatrix(XrGState *gstate) -{ - _XrTransformInitIdentity(&gstate->ctm); - _XrTransformInitIdentity(&gstate->ctm_inverse); - - return XrStatusSuccess; -} - -static void -_XrGStateSetCurrentPt(XrGState *gstate, double x, double y) -{ - gstate->current_pt.x = x; - gstate->current_pt.y = y; - - gstate->has_current_pt = 1; -} - -XrStatus -_XrGStateNewPath(XrGState *gstate) -{ - _XrPathDeinit(&gstate->path); - gstate->has_current_pt = 0; - - return XrStatusSuccess; -} - -XrStatus -_XrGStateMoveTo(XrGState *gstate, double x, double y) -{ - XrStatus status; - - _XrTransformPoint(&gstate->ctm, &x, &y); - - status = _XrPathMoveTo(&gstate->path, x, y); - - _XrGStateSetCurrentPt(gstate, x, y); - - gstate->last_move_pt = gstate->current_pt; - - return status; -} - -XrStatus -_XrGStateLineTo(XrGState *gstate, double x, double y) -{ - XrStatus status; - - _XrTransformPoint(&gstate->ctm, &x, &y); - - status = _XrPathLineTo(&gstate->path, x, y); - - _XrGStateSetCurrentPt(gstate, x, y); - - return status; -} - -XrStatus -_XrGStateCurveTo(XrGState *gstate, - double x1, double y1, - double x2, double y2, - double x3, double y3) -{ - XrStatus status; - - _XrTransformPoint(&gstate->ctm, &x1, &y1); - _XrTransformPoint(&gstate->ctm, &x2, &y2); - _XrTransformPoint(&gstate->ctm, &x3, &y3); - - status = _XrPathCurveTo(&gstate->path, - x1, y1, - x2, y2, - x3, y3); - - _XrGStateSetCurrentPt(gstate, x3, y3); - - return status; -} - -XrStatus -_XrGStateRelMoveTo(XrGState *gstate, double dx, double dy) -{ - XrStatus status; - double x, y; - - _XrTransformDistance(&gstate->ctm, &dx, &dy); - - x = gstate->current_pt.x + dx; - y = gstate->current_pt.y + dy; - - status = _XrPathMoveTo(&gstate->path, x, y); - - _XrGStateSetCurrentPt(gstate, x, y); - - gstate->last_move_pt = gstate->current_pt; - - return status; -} - -XrStatus -_XrGStateRelLineTo(XrGState *gstate, double dx, double dy) -{ - XrStatus status; - double x, y; - - _XrTransformDistance(&gstate->ctm, &dx, &dy); - - x = gstate->current_pt.x + dx; - y = gstate->current_pt.y + dy; - - status = _XrPathLineTo(&gstate->path, x, y); - - _XrGStateSetCurrentPt(gstate, x, y); - - return status; -} - -XrStatus -_XrGStateRelCurveTo(XrGState *gstate, - double dx1, double dy1, - double dx2, double dy2, - double dx3, double dy3) -{ - XrStatus status; - - _XrTransformDistance(&gstate->ctm, &dx1, &dy1); - _XrTransformDistance(&gstate->ctm, &dx2, &dy2); - _XrTransformDistance(&gstate->ctm, &dx3, &dy3); - - status = _XrPathCurveTo(&gstate->path, - gstate->current_pt.x + dx1, gstate->current_pt.y + dy1, - gstate->current_pt.x + dx2, gstate->current_pt.y + dy2, - gstate->current_pt.x + dx3, gstate->current_pt.y + dy3); - - _XrGStateSetCurrentPt(gstate, - gstate->current_pt.x + dx3, - gstate->current_pt.y + dy3); - - return status; -} - -XrStatus -_XrGStateClosePath(XrGState *gstate) -{ - XrStatus status; - - status = _XrPathClosePath(&gstate->path); - - _XrGStateSetCurrentPt(gstate, - gstate->last_move_pt.x, - gstate->last_move_pt.y); - - return status; -} - -XrStatus -_XrGStateStroke(XrGState *gstate) -{ - XrStatus status; - - static XrPathCallbacks cb = { - _XrStrokerAddEdge, - _XrStrokerAddSpline, - _XrStrokerDoneSubPath, - _XrStrokerDonePath - }; - - static XrPathCallbacks cb_dash = { - _XrStrokerAddEdgeDashed, - _XrStrokerAddSpline, - _XrStrokerDoneSubPath, - _XrStrokerDonePath - }; - XrPathCallbacks *cbs = gstate->dash ? &cb_dash : &cb; - - XrStroker stroker; - XrTraps traps; - - _XrPenInit(&gstate->pen_regular, gstate->line_width / 2.0, gstate); - - _XrTrapsInit(&traps); - _XrStrokerInit(&stroker, gstate, &traps); - - status = _XrPathInterpret(&gstate->path, XrPathDirectionForward, cbs, &stroker); - if (status) { - _XrStrokerDeinit(&stroker); - _XrTrapsDeinit(&traps); - return status; - } - - XcCompositeTrapezoids(gstate->dpy, gstate->operator, - _XrSurfaceGetXcSurface(gstate->src), - _XrSurfaceGetXcSurface(gstate->surface), - gstate->alphaFormat, - 0, 0, - traps.xtraps, - traps.num_xtraps); - - _XrStrokerDeinit(&stroker); - _XrTrapsDeinit(&traps); - - _XrGStateNewPath(gstate); - - return XrStatusSuccess; -} - -XrStatus -_XrGStateFill(XrGState *gstate) -{ - XrStatus status; - static XrPathCallbacks cb = { - _XrFillerAddEdge, - _XrFillerAddSpline, - _XrFillerDoneSubPath, - _XrFillerDonePath - }; - - XrFiller filler; - XrTraps traps; - - _XrTrapsInit(&traps); - _XrFillerInit(&filler, gstate, &traps); - - status = _XrPathInterpret(&gstate->path, XrPathDirectionForward, &cb, &filler); - if (status) { - _XrFillerDeinit(&filler); - _XrTrapsDeinit(&traps); - return status; - } - - XcCompositeTrapezoids(gstate->dpy, gstate->operator, - _XrSurfaceGetXcSurface(gstate->src), - _XrSurfaceGetXcSurface(gstate->surface), - gstate->alphaFormat, - 0, 0, - traps.xtraps, - traps.num_xtraps); - - _XrFillerDeinit(&filler); - _XrTrapsDeinit(&traps); - - _XrGStateNewPath(gstate); - - return XrStatusSuccess; -} - -XrStatus -_XrGStateSelectFont(XrGState *gstate, const char *key) -{ - return _XrFontSelect(&gstate->font, key); -} - -XrStatus -_XrGStateScaleFont(XrGState *gstate, double scale) -{ - return _XrFontScale(&gstate->font, scale); -} - -XrStatus -_XrGStateTransformFont(XrGState *gstate, - double a, double b, - double c, double d) -{ - return _XrFontTransform(&gstate->font, - a, b, c, d); -} - -XrStatus -_XrGStateTextExtents(XrGState *gstate, - const unsigned char *utf8, - double *x, double *y, - double *width, double *height, - double *dx, double *dy) -{ - XftFont *xft_font; - XGlyphInfo extents; - - _XrFontResolveXftFont(&gstate->font, gstate, &xft_font); - - XftTextExtentsUtf8(gstate->dpy, - xft_font, - utf8, - strlen((char *) utf8), - &extents); - - /* XXX: What are the semantics of XftTextExtents? Specifically, - what does it do with x/y? I think we actually need to use the - gstate's current point in here somewhere. */ - *x = extents.x; - *y = extents.y; - *width = extents.width; - *height = extents.height; - *dx = extents.xOff; - *dy = extents.yOff; - - return XrStatusSuccess; -} - -XrStatus -_XrGStateShowText(XrGState *gstate, const unsigned char *utf8) -{ - XftFont *xft_font; - - if (gstate->has_current_pt == 0) - return XrStatusNoCurrentPoint; - - _XrFontResolveXftFont(&gstate->font, gstate, &xft_font); - - XftTextRenderUtf8(gstate->dpy, - gstate->operator, - _XrGStateGetSrcPicture(gstate), - xft_font, - _XrGStateGetPicture(gstate), - 0, 0, - gstate->current_pt.x, - gstate->current_pt.y, - utf8, - strlen((char *) utf8)); - - return XrStatusSuccess; -} - -XrStatus -_XrGStateShowImage(XrGState *gstate, - char *data, - XrFormat format, - unsigned int width, - unsigned int height, - unsigned int stride) -{ - return _XrGStateShowImageTransform(gstate, - data, format, width, height, stride, - width, 0, - 0, height, - 0, 0); -} - -XrStatus -_XrGStateShowImageTransform(XrGState *gstate, - char *data, - XrFormat format, - unsigned int width, - unsigned int height, - unsigned int stride, - double a, double b, - double c, double d, - double tx, double ty) -{ - XrStatus status; - XrColor mask_color; - XrSurface image_surface, mask; - XrTransform user_to_image, image_to_user; - XrTransform image_to_device, device_to_image; - double dst_x, dst_y; - double dst_width, dst_height; - - _XrSurfaceInit(&mask, gstate->dpy); - _XrColorInit(&mask_color); - _XrColorSetAlpha(&mask_color, gstate->alpha); - - _XrSurfaceSetSolidColor(&mask, &mask_color); - - _XrSurfaceInit(&image_surface, gstate->dpy); - - _XrSurfaceSetFormat(&image_surface, format); - - status = _XrSurfaceSetImage(&image_surface, data,width, height, stride); - if (status) - return status; - - _XrTransformInitMatrix(&user_to_image, a, b, c, d, tx, ty); - _XrTransformMultiply(&gstate->ctm_inverse, &user_to_image, &device_to_image); - _XrSurfaceSetTransform(&image_surface, &device_to_image); - - image_to_user = user_to_image; - _XrTransformComputeInverse(&image_to_user); - _XrTransformMultiply(&image_to_user, &gstate->ctm, &image_to_device); - - dst_x = 0; - dst_y = 0; - dst_width = width; - dst_height = height; - _XrTransformBoundingBox(&image_to_device, - &dst_x, &dst_y, - &dst_width, &dst_height); - - XcComposite(gstate->dpy, gstate->operator, - _XrSurfaceGetXcSurface(&image_surface), - _XrSurfaceGetXcSurface(&mask), - _XrSurfaceGetXcSurface(gstate->surface), - dst_x, dst_y, - 0, 0, - dst_x, dst_y, - dst_width + 1, - dst_height + 1); - - _XrSurfaceDeinit(&image_surface); - _XrSurfaceDeinit(&mask); - - return XrStatusSuccess; -} - -static Picture -_XrGStateGetPicture(XrGState *gstate) -{ - return _XrSurfaceGetPicture(gstate->surface); -} - -static Picture -_XrGStateGetSrcPicture(XrGState *gstate) -{ - return _XrSurfaceGetPicture(gstate->src); -} diff --git a/xrint.h b/xrint.h deleted file mode 100644 index 89b9b45cd..000000000 --- a/xrint.h +++ /dev/null @@ -1,794 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Carl D. Worth - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Carl - * D. Worth not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Carl D. Worth makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, - * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -/* - * These definitions are solely for use by the implementation of Xr - * and constitute no kind of standard. If you need any of these - * functions, please drop me a note. Either the library needs new - * functionality, or there's a way to do what you need using the - * existing published interfaces. cworth@isi.edu - */ - -#ifndef _XRINT_H_ -#define _XRINT_H_ - -#include <math.h> -#include <X11/Xlibint.h> -#include <X11/Xft/Xft.h> - -#include "Xr.h" - -#ifndef __GCC__ -#define __attribute__(x) -#endif - -/* Sure wish C had a real enum type so that this would be distinct - from XrStatus. Oh well, without that, I'll use this bogus 1000 - offset */ -typedef enum _XrIntStatus { - XrIntStatusDegenerate = 1000 -} XrIntStatus; - -typedef enum _XrPathOp { - XrPathOpMoveTo = 0, - XrPathOpLineTo = 1, - XrPathOpCurveTo = 2, - XrPathOpClosePath = 3 -} __attribute__ ((packed)) XrPathOp; /* Don't want 32 bits if we can avoid it. */ - -typedef enum _XrPathDirection { - XrPathDirectionForward, - XrPathDirectionReverse -} XrPathDirection; - -typedef enum _XrSubPathDone { - XrSubPathDoneCap, - XrSubPathDoneJoin -} XrSubPathDone; - -typedef struct _XrPathCallbacks { - XrStatus (*AddEdge)(void *closure, XPointFixed *p1, XPointFixed *p2); - XrStatus (*AddSpline)(void *closure, XPointFixed *a, XPointFixed *b, XPointFixed *c, XPointFixed *d); - XrStatus (*DoneSubPath) (void *closure, XrSubPathDone done); - XrStatus (*DonePath) (void *closure); -} XrPathCallbacks; - -#define XR_PATH_BUF_SZ 64 - -typedef struct _XrPathOpBuf { - int num_ops; - XrPathOp op[XR_PATH_BUF_SZ]; - - struct _XrPathOpBuf *next, *prev; -} XrPathOpBuf; - -typedef struct _XrPathArgBuf { - int num_pts; - XPointFixed pt[XR_PATH_BUF_SZ]; - - struct _XrPathArgBuf *next, *prev; -} XrPathArgBuf; - -typedef struct _XrPath { - XrPathOpBuf *op_head; - XrPathOpBuf *op_tail; - - XrPathArgBuf *arg_head; - XrPathArgBuf *arg_tail; -} XrPath; - -typedef struct _XrEdge { - XLineFixed edge; - Bool clockWise; - - XFixed current_x; - struct _XrEdge *next, *prev; -} XrEdge; - -typedef struct _XrPolygon { - int num_edges; - int edges_size; - XrEdge *edges; - - XPointFixed first_pt; - int first_pt_defined; - XPointFixed last_pt; - int last_pt_defined; - - int closed; -} XrPolygon; - -typedef struct _XrSlopeFixed -{ - XFixed dx; - XFixed dy; -} XrSlopeFixed; - -typedef struct _XrSpline { - XPointFixed a, b, c, d; - - XrSlopeFixed initial_slope; - XrSlopeFixed final_slope; - - int num_pts; - int pts_size; - XPointFixed *pts; -} XrSpline; - -/* XXX: This can go away once incremental spline tessellation is working */ -typedef enum _XrPenStrokeDirection { - XrPenStrokeDirectionForward, - XrPenStrokeDirectionReverse -} XrPenStrokeDirection; - -typedef struct _XrPenVertex { - XPointFixed pt; - - double theta; - XrSlopeFixed slope_ccw; - XrSlopeFixed slope_cw; -} XrPenVertex; - -typedef struct _XrPen { - double radius; - double tolerance; - - int num_vertices; - XrPenVertex *vertex; -} XrPen; - -typedef struct _XrSurface { - Display *dpy; - - Drawable drawable; - GC gc; - - unsigned int width; - unsigned int height; - unsigned int depth; - - unsigned long xc_sa_mask; - XcSurfaceAttributes xc_sa; - - XrFormat format; - XcFormat *xc_format; - - XcSurface *xc_surface; - int needs_new_xc_surface; - - unsigned int ref_count; -} XrSurface; - -typedef struct _XrColor { - double red; - double green; - double blue; - double alpha; - - XcColor xc_color; -} XrColor; - -typedef struct _XrTransform { - double m[3][2]; -} XrTransform; - -typedef struct _XrTraps { - int num_xtraps; - int xtraps_size; - XTrapezoid *xtraps; -} XrTraps; - -/* XXX: What should this really be? */ -#define XR_FONT_KEY_DEFAULT "mono" - -typedef struct _XrFont { - unsigned char *key; - - double scale; - int has_transform; - XrTransform transform; - - Display *dpy; - XftFont *xft_font; -} XrFont; - - -#define XR_GSTATE_OPERATOR_DEFAULT XrOperatorOver -#define XR_GSTATE_TOLERANCE_DEFAULT 0.1 -#define XR_GSTATE_FILL_RULE_DEFAULT XrFillRuleWinding -#define XR_GSTATE_LINE_WIDTH_DEFAULT 2.0 -#define XR_GSTATE_LINE_CAP_DEFAULT XrLineCapButt -#define XR_GSTATE_LINE_JOIN_DEFAULT XrLineJoinMiter -#define XR_GSTATE_MITER_LIMIT_DEFAULT 10.0 - -typedef struct _XrGState { - Display *dpy; - - XrOperator operator; - - double tolerance; - - /* stroke style */ - double line_width; - XrLineCap line_cap; - XrLineJoin line_join; - double miter_limit; - - XrFillRule fill_rule; - - double *dash; - int num_dashes; - double dash_offset; - - XcFormat *alphaFormat; - - XrFont font; - - XrSurface *parent_surface; - XrSurface *surface; - XrSurface *src; - XrSurface *mask; - - double alpha; - XrColor color; - - XrTransform ctm; - XrTransform ctm_inverse; - - XrPath path; - - XPointDouble last_move_pt; - XPointDouble current_pt; - int has_current_pt; - - XrPen pen_regular; - - struct _XrGState *next; -} XrGState; - -struct _XrState { - Display *dpy; - XrGState *stack; - XrStatus status; -}; - -typedef struct _XrStrokeFace { - XPointFixed ccw; - XPointFixed pt; - XPointFixed cw; - XrSlopeFixed dev_vector; - XPointDouble usr_vector; -} XrStrokeFace; - -typedef struct _XrStroker { - XrGState *gstate; - XrTraps *traps; - - int have_prev; - int have_first; - int is_first; - XrStrokeFace prev; - XrStrokeFace first; - int dash_index; - int dash_on; - double dash_remain; -} XrStroker; - -typedef struct _XrFiller { - XrGState *gstate; - XrTraps *traps; - - XrPolygon polygon; -} XrFiller; - -/* xrstate.c */ - -XrState * -_XrStateCreate(Display *dpy); - -XrStatus -_XrStateInit(XrState *state, Display *dpy); - -void -_XrStateDeinit(XrState *xrs); - -void -_XrStateDestroy(XrState *state); - -XrStatus -_XrStatePush(XrState *xrs); - -XrStatus -_XrStatePop(XrState *xrs); - -/* xrgstate.c */ -XrGState * -_XrGStateCreate(Display *dpy); - -void -_XrGStateInit(XrGState *gstate, Display *dpy); - -XrStatus -_XrGStateInitCopy(XrGState *gstate, XrGState *other); - -void -_XrGStateDeinit(XrGState *gstate); - -void -_XrGStateDestroy(XrGState *gstate); - -XrGState * -_XrGStateClone(XrGState *gstate); - -XrStatus -_XrGStateBeginGroup(XrGState *gstate); - -XrStatus -_XrGStateEndGroup(XrGState *gstate); - -XrStatus -_XrGStateSetDrawable(XrGState *gstate, Drawable drawable); - -XrStatus -_XrGStateSetVisual(XrGState *gstate, Visual *visual); - -XrStatus -_XrGStateSetFormat(XrGState *gstate, XrFormat format); - -XrStatus -_XrGStateSetOperator(XrGState *gstate, XrOperator operator); - -XrStatus -_XrGStateSetRGBColor(XrGState *gstate, double red, double green, double blue); - -XrStatus -_XrGStateSetTolerance(XrGState *gstate, double tolerance); - -XrStatus -_XrGStateSetAlpha(XrGState *gstate, double alpha); - -XrStatus -_XrGStateSetFillRule(XrGState *gstate, XrFillRule fill_rule); - -XrStatus -_XrGStateSetLineWidth(XrGState *gstate, double width); - -XrStatus -_XrGStateSetLineCap(XrGState *gstate, XrLineCap line_cap); - -XrStatus -_XrGStateSetLineJoin(XrGState *gstate, XrLineJoin line_join); - -XrStatus -_XrGStateSetDash(XrGState *gstate, double *dash, int num_dashes, double offset); - -XrStatus -_XrGStateSetMiterLimit(XrGState *gstate, double limit); - -XrStatus -_XrGStateTranslate(XrGState *gstate, double tx, double ty); - -XrStatus -_XrGStateScale(XrGState *gstate, double sx, double sy); - -XrStatus -_XrGStateRotate(XrGState *gstate, double angle); - -XrStatus -_XrGStateConcatMatrix(XrGState *gstate, - double a, double b, - double c, double d, - double tx, double ty); - -XrStatus -_XrGStateSetMatrix(XrGState *gstate, - double a, double b, - double c, double d, - double tx, double ty); - -XrStatus -_XrGStateIdentityMatrix(XrGState *xrs); - -XrStatus -_XrGStateNewPath(XrGState *gstate); - -XrStatus -_XrGStateMoveTo(XrGState *gstate, double x, double y); - -XrStatus -_XrGStateLineTo(XrGState *gstate, double x, double y); - -XrStatus -_XrGStateCurveTo(XrGState *gstate, - double x1, double y1, - double x2, double y2, - double x3, double y3); - -XrStatus -_XrGStateRelMoveTo(XrGState *gstate, double dx, double dy); - -XrStatus -_XrGStateRelLineTo(XrGState *gstate, double dx, double dy); - -XrStatus -_XrGStateRelCurveTo(XrGState *gstate, - double dx1, double dy1, - double dx2, double dy2, - double dx3, double dy3); - -XrStatus -_XrGStateClosePath(XrGState *gstate); - -XrStatus -_XrGStateStroke(XrGState *gstate); - -XrStatus -_XrGStateFill(XrGState *fill); - -XrStatus -_XrGStateSelectFont(XrGState *gstate, const char *key); - -XrStatus -_XrGStateScaleFont(XrGState *gstate, double scale); - -XrStatus -_XrGStateTransformFont(XrGState *gstate, - double a, double b, - double c, double d); - -XrStatus -_XrGStateTextExtents(XrGState *gstate, - const unsigned char *utf8, - double *x, double *y, - double *width, double *height, - double *dx, double *dy); - -XrStatus -_XrGStateShowText(XrGState *gstate, const unsigned char *utf8); - -XrStatus -_XrGStateShowImage(XrGState *gstate, - char *data, - XrFormat format, - unsigned int width, - unsigned int height, - unsigned int stride); - -XrStatus -_XrGStateShowImageTransform(XrGState *gstate, - char *data, - XrFormat format, - unsigned int width, - unsigned int height, - unsigned int stride, - double a, double b, - double c, double d, - double tx, double ty); - -/* xrcolor.c */ -void -_XrColorInit(XrColor *color); - -void -_XrColorDeinit(XrColor *color); - -void -_XrColorSetRGB(XrColor *color, double red, double green, double blue); - -void -_XrColorSetAlpha(XrColor *color, double alpha); - -/* xrfont.c */ - -void -_XrFontInit(XrFont *font); - -XrStatus -_XrFontInitCopy(XrFont *font, XrFont *other); - -void -_XrFontDeinit(XrFont *font); - -XrStatus -_XrFontSelect(XrFont *font, const char *key); - -XrStatus -_XrFontScale(XrFont *font, double scale); - -XrStatus -_XrFontTransform(XrFont *font, - double a, double b, - double c, double d); - -XrStatus -_XrFontResolveXftFont(XrFont *font, XrGState *gstate, XftFont **xft_font); - -/* xrpath.c */ -void -_XrPathInit(XrPath *path); - -XrStatus -_XrPathInitCopy(XrPath *path, XrPath *other); - -void -_XrPathDeinit(XrPath *path); - -XrStatus -_XrPathMoveTo(XrPath *path, double x, double y); - -XrStatus -_XrPathLineTo(XrPath *path, double x, double y); - -XrStatus -_XrPathCurveTo(XrPath *path, - double x1, double y1, - double x2, double y2, - double x3, double y3); - -XrStatus -_XrPathClosePath(XrPath *path); - -XrStatus -_XrPathInterpret(XrPath *path, XrPathDirection dir, XrPathCallbacks *cb, void *closure); - -/* xrsurface.c */ -XrSurface * -_XrSurfaceCreate(Display *dpy); - -void -_XrSurfaceInit(XrSurface *surface, Display *dpy); - -void -_XrSurfaceDeinit(XrSurface *surface); - -void -_XrSurfaceDestroy(XrSurface *surface); - -void -_XrSurfaceReference(XrSurface *surface); - -void -_XrSurfaceDereference(XrSurface *surface); - -void -_XrSurfaceDereferenceDestroy(XrSurface *surface); - -void -_XrSurfaceSetSolidColor(XrSurface *surface, XrColor *color); - -XrStatus -_XrSurfaceSetImage(XrSurface *surface, - char *data, - unsigned int width, - unsigned int height, - unsigned int stride); - -XrStatus -_XrSurfaceSetTransform(XrSurface *surface, XrTransform *transform); - -void -_XrSurfaceSetDrawable(XrSurface *surface, Drawable drawable); - -void -_XrSurfaceSetDrawableWH(XrSurface *surface, - Drawable drawable, - unsigned int width, - unsigned int height); - -void -_XrSurfaceSetVisual(XrSurface *surface, Visual *visual); - -void -_XrSurfaceSetFormat(XrSurface *surface, XrFormat format); - -XcSurface * -_XrSurfaceGetXcSurface(XrSurface *surface); - -Picture -_XrSurfaceGetPicture(XrSurface *surface); - -Drawable -_XrSurfaceGetDrawable(XrSurface *surface); - -unsigned int -_XrSurfaceGetWidth(XrSurface *surface); - -unsigned int -_XrSurfaceGetHeight(XrSurface *surface); - -unsigned int -_XrSurfaceGetDepth(XrSurface *surface); - -/* xrpen.c */ -XrStatus -_XrPenInit(XrPen *pen, double radius, XrGState *gstate); - -XrStatus -_XrPenInitEmpty(XrPen *pen); - -XrStatus -_XrPenInitCopy(XrPen *pen, XrPen *other); - -void -_XrPenDeinit(XrPen *pen); - -XrStatus -_XrPenAddPoints(XrPen *pen, XPointFixed *pt, int num_pts); - -XrStatus -_XrPenAddPointsForSlopes(XrPen *pen, XPointFixed *a, XPointFixed *b, XPointFixed *c, XPointFixed *d); - -XrStatus -_XrPenFindActiveCWVertexIndex(XrPen *pen, XrSlopeFixed *slope, int *active); - -XrStatus -_XrPenFindActiveCCWVertexIndex(XrPen *pen, XrSlopeFixed *slope, int *active); - -XrStatus -_XrPenStrokeSpline(XrPen *pen, XrSpline *spline, double tolerance, XrTraps *traps); - -/* xrpolygon.c */ -void -_XrPolygonInit(XrPolygon *polygon); - -void -_XrPolygonDeinit(XrPolygon *polygon); - -XrStatus -_XrPolygonAddEdge(XrPolygon *polygon, XPointFixed *p1, XPointFixed *p2); - -XrStatus -_XrPolygonAddPoint(XrPolygon *polygon, XPointFixed *pt); - -XrStatus -_XrPolygonClose(XrPolygon *polygon); - -/* xrspline.c */ -XrIntStatus -_XrSplineInit(XrSpline *spline, XPointFixed *a, XPointFixed *b, XPointFixed *c, XPointFixed *d); - -XrStatus -_XrSplineDecompose(XrSpline *spline, double tolerance); - -void -_XrSplineDeinit(XrSpline *spline); - -/* xrstroker.c */ -void -_XrStrokerInit(XrStroker *stroker, XrGState *gstate, XrTraps *traps); - -void -_XrStrokerDeinit(XrStroker *stroker); - -XrStatus -_XrStrokerAddEdge(void *closure, XPointFixed *p1, XPointFixed *p2); - -XrStatus -_XrStrokerAddEdgeDashed(void *closure, XPointFixed *p1, XPointFixed *p2); - -XrStatus -_XrStrokerAddSpline (void *closure, XPointFixed *a, XPointFixed *b, XPointFixed *c, XPointFixed *d); - -XrStatus -_XrStrokerDoneSubPath (void *closure, XrSubPathDone done); - -XrStatus -_XrStrokerDonePath (void *closure); - -/* xrfiller.c */ -void -_XrFillerInit(XrFiller *filler, XrGState *gstate, XrTraps *traps); - -void -_XrFillerDeinit(XrFiller *filler); - -XrStatus -_XrFillerAddEdge(void *closure, XPointFixed *p1, XPointFixed *p2); - -XrStatus -_XrFillerAddSpline (void *closure, XPointFixed *a, XPointFixed *b, XPointFixed *c, XPointFixed *d); - -XrStatus -_XrFillerDoneSubPath (void *closure, XrSubPathDone done); - -XrStatus -_XrFillerDonePath (void *closure); - -/* xrtransform.c */ -void -_XrTransformInitIdentity(XrTransform *transform); - -void -_XrTransformDeinit(XrTransform *transform); - -void -_XrTransformInitMatrix(XrTransform *transform, - double a, double b, - double c, double d, - double tx, double ty); - -void -_XrTransformInitTranslate(XrTransform *transform, - double tx, double ty); - -void -_XrTransformInitScale(XrTransform *transform, - double sx, double sy); - -void -_XrTransformInitRotate(XrTransform *transform, - double angle); - -void -_XrTransformMultiplyIntoLeft(XrTransform *t1, const XrTransform *t2); - -void -_XrTransformMultiplyIntoRight(const XrTransform *t1, XrTransform *t2); - -void -_XrTransformMultiply(const XrTransform *t1, const XrTransform *t2, XrTransform *new); - -void -_XrTransformDistance(XrTransform *transform, double *dx, double *dy); - -void -_XrTransformPoint(XrTransform *transform, double *x, double *y); - -void -_XrTransformBoundingBox(XrTransform *transform, - double *x, double *y, - double *width, double *height); - -XrStatus -_XrTransformComputeInverse(XrTransform *transform); - -void -_XrTransformComputeDeterminant(XrTransform *transform, double *det); - -void -_XrTransformEigenValues(XrTransform *transform, double *lambda1, double *lambda2); - -/* xrtraps.c */ -void -_XrTrapsInit(XrTraps *traps); - -void -_XrTrapsDeinit(XrTraps *traps); - -XrStatus -_XrTrapsTessellateTriangle (XrTraps *traps, XPointFixed t[3]); - -XrStatus -_XrTrapsTessellateRectangle (XrTraps *traps, XPointFixed q[4]); - -XrStatus -_XrTrapsTessellatePolygon (XrTraps *traps, XrPolygon *poly, XrFillRule fill_rule); - -/* xrmisc.c */ - -void -_ComputeSlope(XPointFixed *a, XPointFixed *b, XrSlopeFixed *slope); - -#endif diff --git a/xrmisc.c b/xrmisc.c deleted file mode 100644 index 74e7585d2..000000000 --- a/xrmisc.c +++ /dev/null @@ -1,34 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Carl D. Worth - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Carl - * D. Worth not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Carl D. Worth makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, - * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "xrint.h" - -void -_ComputeSlope(XPointFixed *a, XPointFixed *b, XrSlopeFixed *slope) -{ - slope->dx = b->x - a->x; - slope->dy = b->y - a->y; -} - diff --git a/xrpath.c b/xrpath.c deleted file mode 100644 index cc778d632..000000000 --- a/xrpath.c +++ /dev/null @@ -1,432 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Carl D. Worth - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Carl - * D. Worth not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Carl D. Worth makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, - * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include <stdlib.h> -#include "xrint.h" - -/* private functions */ -static XrStatus -_XrPathAdd(XrPath *path, XrPathOp op, XPointFixed *pts, int num_pts); - -static void -_XrPathAddOpBuf(XrPath *path, XrPathOpBuf *op); - -static XrStatus -_XrPathNewOpBuf(XrPath *path); - -static void -_XrPathAddArgBuf(XrPath *path, XrPathArgBuf *arg); - -static XrStatus -_XrPathNewArgBuf(XrPath *path); - -static XrPathOpBuf * -_XrPathOpBufCreate(void); - -static void -_XrPathOpBufDestroy(XrPathOpBuf *buf); - -static void -_XrPathOpBufAdd(XrPathOpBuf *op_buf, XrPathOp op); - -static XrPathArgBuf * -_XrPathArgBufCreate(void); - -static void -_XrPathArgBufDestroy(XrPathArgBuf *buf); - -static void -_XrPathArgBufAdd(XrPathArgBuf *arg, XPointFixed *pts, int num_pts); - -void -_XrPathInit(XrPath *path) -{ - path->op_head = NULL; - path->op_tail = NULL; - - path->arg_head = NULL; - path->arg_tail = NULL; -} - -XrStatus -_XrPathInitCopy(XrPath *path, XrPath *other) -{ - XrPathOpBuf *op, *other_op; - XrPathArgBuf *arg, *other_arg; - - _XrPathInit(path); - - for (other_op = other->op_head; other_op; other_op = other_op->next) { - op = _XrPathOpBufCreate(); - if (op == NULL) { - return XrStatusNoMemory; - } - *op = *other_op; - _XrPathAddOpBuf(path, op); - } - - for (other_arg = other->arg_head; other_arg; other_arg = other_arg->next) { - arg = _XrPathArgBufCreate(); - if (arg == NULL) { - return XrStatusNoMemory; - } - *arg = *other_arg; - _XrPathAddArgBuf(path, arg); - } - - return XrStatusSuccess; -} - -void -_XrPathDeinit(XrPath *path) -{ - XrPathOpBuf *op; - XrPathArgBuf *arg; - - while (path->op_head) { - op = path->op_head; - path->op_head = op->next; - _XrPathOpBufDestroy(op); - } - path->op_tail = NULL; - - while (path->arg_head) { - arg = path->arg_head; - path->arg_head = arg->next; - _XrPathArgBufDestroy(arg); - } - path->arg_tail = NULL; -} - -XrStatus -_XrPathMoveTo(XrPath *path, double x, double y) -{ - XPointFixed pt; - - pt.x = XDoubleToFixed(x); - pt.y = XDoubleToFixed(y); - - return _XrPathAdd(path, XrPathOpMoveTo, &pt, 1); -} - -XrStatus -_XrPathLineTo(XrPath *path, double x, double y) -{ - XPointFixed pt; - - pt.x = XDoubleToFixed(x); - pt.y = XDoubleToFixed(y); - - return _XrPathAdd(path, XrPathOpLineTo, &pt, 1); -} - -XrStatus -_XrPathCurveTo(XrPath *path, - double x1, double y1, - double x2, double y2, - double x3, double y3) -{ - XPointFixed pt[3]; - - pt[0].x = XDoubleToFixed(x1); - pt[0].y = XDoubleToFixed(y1); - - pt[1].x = XDoubleToFixed(x2); - pt[1].y = XDoubleToFixed(y2); - - pt[2].x = XDoubleToFixed(x3); - pt[2].y = XDoubleToFixed(y3); - - return _XrPathAdd(path, XrPathOpCurveTo, pt, 3); -} - -XrStatus -_XrPathClosePath(XrPath *path) -{ - return _XrPathAdd(path, XrPathOpClosePath, NULL, 0); -} - -static XrStatus -_XrPathAdd(XrPath *path, XrPathOp op, XPointFixed *pts, int num_pts) -{ - XrStatus status; - - if (path->op_tail == NULL || path->op_tail->num_ops + 1 > XR_PATH_BUF_SZ) { - status = _XrPathNewOpBuf(path); - if (status) - return status; - } - _XrPathOpBufAdd(path->op_tail, op); - - if (path->arg_tail == NULL || path->arg_tail->num_pts + num_pts > XR_PATH_BUF_SZ) { - status = _XrPathNewArgBuf(path); - if (status) - return status; - } - _XrPathArgBufAdd(path->arg_tail, pts, num_pts); - - return XrStatusSuccess; -} - -static void -_XrPathAddOpBuf(XrPath *path, XrPathOpBuf *op) -{ - op->next = NULL; - op->prev = path->op_tail; - - if (path->op_tail) { - path->op_tail->next = op; - } else { - path->op_head = op; - } - - path->op_tail = op; -} - -static XrStatus -_XrPathNewOpBuf(XrPath *path) -{ - XrPathOpBuf *op; - - op = _XrPathOpBufCreate(); - if (op == NULL) - return XrStatusNoMemory; - - _XrPathAddOpBuf(path, op); - - return XrStatusSuccess; -} - -static void -_XrPathAddArgBuf(XrPath *path, XrPathArgBuf *arg) -{ - arg->next = NULL; - arg->prev = path->arg_tail; - - if (path->arg_tail) { - path->arg_tail->next = arg; - } else { - path->arg_head = arg; - } - - path->arg_tail = arg; -} - -static XrStatus -_XrPathNewArgBuf(XrPath *path) -{ - XrPathArgBuf *arg; - - arg = _XrPathArgBufCreate(); - - if (arg == NULL) - return XrStatusNoMemory; - - _XrPathAddArgBuf(path, arg); - - return XrStatusSuccess; -} - -static XrPathOpBuf * -_XrPathOpBufCreate(void) -{ - XrPathOpBuf *op; - - op = malloc(sizeof(XrPathOpBuf)); - - if (op) { - op->num_ops = 0; - op->next = NULL; - } - - return op; -} - -static void -_XrPathOpBufDestroy(XrPathOpBuf *op) -{ - free(op); -} - -static void -_XrPathOpBufAdd(XrPathOpBuf *op_buf, XrPathOp op) -{ - op_buf->op[op_buf->num_ops++] = op; -} - -static XrPathArgBuf * -_XrPathArgBufCreate(void) -{ - XrPathArgBuf *arg; - - arg = malloc(sizeof(XrPathArgBuf)); - - if (arg) { - arg->num_pts = 0; - arg->next = NULL; - } - - return arg; -} - -static void -_XrPathArgBufDestroy(XrPathArgBuf *arg) -{ - free(arg); -} - -static void -_XrPathArgBufAdd(XrPathArgBuf *arg, XPointFixed *pts, int num_pts) -{ - int i; - - for (i=0; i < num_pts; i++) { - arg->pt[arg->num_pts++] = pts[i]; - } -} - -#define XR_PATH_OP_MAX_ARGS 3 - -static int num_args[] = -{ - 1, /* XrPathMoveTo */ - 1, /* XrPathOpLineTo */ - 3, /* XrPathOpCurveTo */ - 0, /* XrPathOpClosePath */ -}; - -XrStatus -_XrPathInterpret(XrPath *path, XrPathDirection dir, XrPathCallbacks *cb, void *closure) -{ - XrStatus status; - int i, arg; - XrPathOpBuf *op_buf; - XrPathOp op; - XrPathArgBuf *arg_buf = path->arg_head; - int buf_i = 0; - XPointFixed pt[XR_PATH_OP_MAX_ARGS]; - XPointFixed current = {0, 0}; - XPointFixed first = {0, 0}; - int has_current = 0; - int has_edge = 0; - int step = (dir == XrPathDirectionForward) ? 1 : -1; - - for (op_buf = (dir == XrPathDirectionForward) ? path->op_head : path->op_tail; - op_buf; - op_buf = (dir == XrPathDirectionForward) ? op_buf->next : op_buf->prev) - { - int start, stop; - if (dir == XrPathDirectionForward) { - start = 0; - stop = op_buf->num_ops; - } else { - start = op_buf->num_ops - 1; - stop = -1; - } - - for (i=start; i != stop; i += step) { - op = op_buf->op[i]; - - if (dir == XrPathDirectionReverse) { - if (buf_i == 0) { - arg_buf = arg_buf->prev; - buf_i = arg_buf->num_pts; - } - buf_i -= num_args[op]; - } - - for (arg = 0; arg < num_args[op]; arg++) { - pt[arg] = arg_buf->pt[buf_i]; - buf_i++; - if (buf_i >= arg_buf->num_pts) { - arg_buf = arg_buf->next; - buf_i = 0; - } - } - - if (dir == XrPathDirectionReverse) { - buf_i -= num_args[op]; - } - - switch (op) { - case XrPathOpMoveTo: - if (has_edge) { - status = (*cb->DoneSubPath) (closure, XrSubPathDoneCap); - if (status) - return status; - } - first = pt[0]; - current = pt[0]; - has_current = 1; - has_edge = 0; - break; - case XrPathOpLineTo: - if (has_current) { - status = (*cb->AddEdge)(closure, ¤t, &pt[0]); - if (status) - return status; - current = pt[0]; - has_edge = 1; - } else { - first = pt[0]; - current = pt[0]; - has_current = 1; - has_edge = 0; - } - break; - case XrPathOpCurveTo: - if (has_current) { - status = (*cb->AddSpline)(closure, ¤t, &pt[0], &pt[1], &pt[2]); - if (status) - return status; - current = pt[2]; - has_edge = 1; - } else { - first = pt[2]; - current = pt[2]; - has_current = 1; - has_edge = 0; - } - break; - case XrPathOpClosePath: - if (has_edge) { - (*cb->AddEdge)(closure, ¤t, &first); - (*cb->DoneSubPath) (closure, XrSubPathDoneJoin); - } - current.x = 0; - current.y = 0; - first.x = 0; - first.y = 0; - has_current = 0; - has_edge = 0; - break; - } - } - } - if (has_edge) - (*cb->DoneSubPath) (closure, XrSubPathDoneCap); - - return (*cb->DonePath)(closure); -} diff --git a/xrpen.c b/xrpen.c deleted file mode 100644 index f89111f2f..000000000 --- a/xrpen.c +++ /dev/null @@ -1,389 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Carl D. Worth - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Carl - * D. Worth not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Carl D. Worth makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, - * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "xrint.h" - -static int -_XrPenVerticesNeeded(double radius, double tolerance, XrTransform *matrix); - -static void -_XrPenComputeSlopes(XrPen *pen); - -static int -_SlopeClockwise(XrSlopeFixed *a, XrSlopeFixed *b); - -static int -_SlopeCounterClockwise(XrSlopeFixed *a, XrSlopeFixed *b); - -static int -_XrPenVertexCompareByTheta(const void *a, const void *b); - -static XrStatus -_XrPenStrokeSplineHalf(XrPen *pen, XrSpline *spline, XrPenStrokeDirection dir, XrPolygon *polygon); - -XrStatus -_XrPenInitEmpty(XrPen *pen) -{ - pen->radius = 0; - pen->tolerance = 0; - pen->vertex = NULL; - pen->num_vertices = 0; - - return XrStatusSuccess; -} - -XrStatus -_XrPenInit(XrPen *pen, double radius, XrGState *gstate) -{ - int i; - XrPenVertex *v; - double dx, dy; - - if (pen->num_vertices) { - /* XXX: It would be nice to notice that the pen is already properly constructed. - However, this test would also have to account for possible changes in the transformation - matrix. - if (pen->radius == radius && pen->tolerance == tolerance) - return XrStatusSuccess; - */ - _XrPenDeinit(pen); - } - - pen->radius = radius; - pen->tolerance = gstate->tolerance; - - pen->num_vertices = _XrPenVerticesNeeded(radius, gstate->tolerance, &gstate->ctm); - /* number of vertices must be even */ - if (pen->num_vertices % 2) - pen->num_vertices++; - - pen->vertex = malloc(pen->num_vertices * sizeof(XrPenVertex)); - if (pen->vertex == NULL) { - return XrStatusNoMemory; - } - - for (i=0; i < pen->num_vertices; i++) { - v = &pen->vertex[i]; - v->theta = 2 * M_PI * i / (double) pen->num_vertices; - dx = radius * cos(v->theta); - dy = radius * sin(v->theta); - _XrTransformDistance(&gstate->ctm, &dx, &dy); - v->pt.x = XDoubleToFixed(dx); - v->pt.y = XDoubleToFixed(dy); - /* Recompute theta in device space */ - v->theta = atan2(v->pt.y, v->pt.x); - if (v->theta < 0) - v->theta += 2 * M_PI; - } - - _XrPenComputeSlopes(pen); - - return XrStatusSuccess; -} - -void -_XrPenDeinit(XrPen *pen) -{ - free(pen->vertex); - _XrPenInitEmpty(pen); -} - -XrStatus -_XrPenInitCopy(XrPen *pen, XrPen *other) -{ - *pen = *other; - - if (pen->num_vertices) { - pen->vertex = malloc(pen->num_vertices * sizeof(XrPenVertex)); - if (pen->vertex == NULL) { - return XrStatusNoMemory; - } - memcpy(pen->vertex, other->vertex, pen->num_vertices * sizeof(XrPenVertex)); - } - - return XrStatusSuccess; -} - -static int -_XrPenVertexCompareByTheta(const void *a, const void *b) -{ - double diff; - const XrPenVertex *va = a; - const XrPenVertex *vb = b; - - diff = va->theta - vb->theta; - if (diff < 0) - return -1; - else if (diff > 0) - return 1; - else - return 0; -} - -XrStatus -_XrPenAddPoints(XrPen *pen, XPointFixed *pt, int num_pts) -{ - int i, j; - XrPenVertex *v, *v_next, *new_vertex; - - pen->num_vertices += num_pts; - new_vertex = realloc(pen->vertex, pen->num_vertices * sizeof(XrPenVertex)); - if (new_vertex == NULL) { - pen->num_vertices -= num_pts; - return XrStatusNoMemory; - } - pen->vertex = new_vertex; - - /* initialize new vertices */ - for (i=0; i < num_pts; i++) { - v = &pen->vertex[pen->num_vertices-(i+1)]; - v->pt = pt[i]; - v->theta = atan2(v->pt.y, v->pt.x); - if (v->theta < 0) - v->theta += 2 * M_PI; - } - - qsort(pen->vertex, pen->num_vertices, sizeof(XrPenVertex), _XrPenVertexCompareByTheta); - - /* eliminate any duplicate vertices */ - for (i=0; i < pen->num_vertices - 1; i++ ) { - v = &pen->vertex[i]; - v_next = &pen->vertex[i+1]; - if (v->pt.x == v_next->pt.x && v->pt.y == v_next->pt.y) { - for (j=i+1; j < pen->num_vertices - 1; j++) - pen->vertex[j] = pen->vertex[j+1]; - pen->num_vertices--; - /* There may be more of the same duplicate, check again */ - i--; - } - } - - _XrPenComputeSlopes(pen); - - return XrStatusSuccess; -} - -static int -_XrPenVerticesNeeded(double radius, double tolerance, XrTransform *matrix) -{ - double expansion, theta; - - /* The determinant represents the area expansion factor of the - transform. In the worst case, this is entirely in one - dimension, which is what we assume here. */ - - _XrTransformComputeDeterminant(matrix, &expansion); - - if (tolerance > expansion*radius) { - return 4; - } - - theta = acos(1 - tolerance/(expansion * radius)); - return ceil(M_PI / theta); -} - -static void -_XrPenComputeSlopes(XrPen *pen) -{ - int i, i_prev; - XrPenVertex *prev, *v, *next; - - for (i=0, i_prev = pen->num_vertices - 1; - i < pen->num_vertices; - i_prev = i++) { - prev = &pen->vertex[i_prev]; - v = &pen->vertex[i]; - next = &pen->vertex[(i + 1) % pen->num_vertices]; - - _ComputeSlope(&prev->pt, &v->pt, &v->slope_cw); - _ComputeSlope(&v->pt, &next->pt, &v->slope_ccw); - } -} - -/* Is a clockwise of b? - * - * NOTE: The strict equality here is not significant in and of itself, - * but there are functions up above that are sensitive to it, - * (cf. _XrPenFindActiveCWVertexIndex). - */ -static int -_SlopeClockwise(XrSlopeFixed *a, XrSlopeFixed *b) -{ - double a_dx = XFixedToDouble(a->dx); - double a_dy = XFixedToDouble(a->dy); - double b_dx = XFixedToDouble(b->dx); - double b_dy = XFixedToDouble(b->dy); - - return b_dy * a_dx > a_dy * b_dx; -} - -static int -_SlopeCounterClockwise(XrSlopeFixed *a, XrSlopeFixed *b) -{ - return ! _SlopeClockwise(a, b); -} - -/* Find active pen vertex for clockwise edge of stroke at the given slope. - * - * NOTE: The behavior of this function is sensitive to the sense of - * the inequality within _SlopeClockwise/_SlopeCounterClockwise. - * - * The issue is that the slope_ccw member of one pen vertex will be - * equivalent to the slope_cw member of the next pen vertex in a - * counterclockwise order. However, for this function, we care - * strongly about which vertex is returned. - */ -XrStatus -_XrPenFindActiveCWVertexIndex(XrPen *pen, XrSlopeFixed *slope, int *active) -{ - int i; - - for (i=0; i < pen->num_vertices; i++) { - if (_SlopeClockwise(slope, &pen->vertex[i].slope_ccw) - && _SlopeCounterClockwise(slope, &pen->vertex[i].slope_cw)) - break; - } - - *active = i; - - return XrStatusSuccess; -} - -/* Find active pen vertex for counterclockwise edge of stroke at the given slope. - * - * NOTE: The behavior of this function is sensitive to the sense of - * the inequality within _SlopeClockwise/_SlopeCounterClockwise. - */ -XrStatus -_XrPenFindActiveCCWVertexIndex(XrPen *pen, XrSlopeFixed *slope, int *active) -{ - int i; - XrSlopeFixed slope_reverse; - - slope_reverse = *slope; - slope_reverse.dx = -slope_reverse.dx; - slope_reverse.dy = -slope_reverse.dy; - - for (i=pen->num_vertices-1; i >= 0; i--) { - if (_SlopeCounterClockwise(&pen->vertex[i].slope_ccw, &slope_reverse) - && _SlopeClockwise(&pen->vertex[i].slope_cw, &slope_reverse)) - break; - } - - *active = i; - - return XrStatusSuccess; -} - -static XrStatus -_XrPenStrokeSplineHalf(XrPen *pen, XrSpline *spline, XrPenStrokeDirection dir, XrPolygon *polygon) -{ - int i; - XrStatus status; - int start, stop, step; - int active = 0; - XPointFixed hull_pt; - XrSlopeFixed slope, initial_slope, final_slope; - XPointFixed *pt = spline->pts; - int num_pts = spline->num_pts; - - if (dir == XrPenStrokeDirectionForward) { - start = 0; - stop = num_pts; - step = 1; - initial_slope = spline->initial_slope; - final_slope = spline->final_slope; - } else { - start = num_pts - 1; - stop = -1; - step = -1; - initial_slope = spline->final_slope; - initial_slope.dx = -initial_slope.dx; - initial_slope.dy = -initial_slope.dy; - final_slope = spline->initial_slope; - final_slope.dx = -final_slope.dx; - final_slope.dy = -final_slope.dy; - } - - _XrPenFindActiveCWVertexIndex(pen, &initial_slope, &active); - - i = start; - while (i != stop) { - hull_pt.x = pt[i].x + pen->vertex[active].pt.x; - hull_pt.y = pt[i].y + pen->vertex[active].pt.y; - status = _XrPolygonAddPoint(polygon, &hull_pt); - if (status) - return status; - - if (i + step == stop) - slope = final_slope; - else - _ComputeSlope(&pt[i], &pt[i+step], &slope); - if (_SlopeCounterClockwise(&slope, &pen->vertex[active].slope_ccw)) { - if (++active == pen->num_vertices) - active = 0; - } else if (_SlopeClockwise(&slope, &pen->vertex[active].slope_cw)) { - if (--active == -1) - active = pen->num_vertices - 1; - } else { - i += step; - } - } - - return XrStatusSuccess; -} - -/* Compute outline of a given spline using the pen. - The trapezoids needed to fill that outline will be added to traps -*/ -XrStatus -_XrPenStrokeSpline(XrPen *pen, - XrSpline *spline, - double tolerance, - XrTraps *traps) -{ - XrStatus status; - XrPolygon polygon; - - _XrPolygonInit(&polygon); - - status = _XrSplineDecompose(spline, tolerance); - if (status) - return status; - - status = _XrPenStrokeSplineHalf(pen, spline, XrPenStrokeDirectionForward, &polygon); - if (status) - return status; - - status = _XrPenStrokeSplineHalf(pen, spline, XrPenStrokeDirectionReverse, &polygon); - if (status) - return status; - - _XrPolygonClose(&polygon); - _XrTrapsTessellatePolygon(traps, &polygon, XrFillRuleWinding); - _XrPolygonDeinit(&polygon); - - return XrStatusSuccess; -} diff --git a/xrpolygon.c b/xrpolygon.c deleted file mode 100644 index d638ece10..000000000 --- a/xrpolygon.c +++ /dev/null @@ -1,173 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Carl D. Worth - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Carl - * D. Worth not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Carl D. Worth makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, - * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include <stdlib.h> -#include "xrint.h" - -#define XR_POLYGON_GROWTH_INC 10 - -/* private functions */ - -static XrStatus -_XrPolygonGrowBy(XrPolygon *polygon, int additional); - -static void -_XrPolygonSetLastPoint(XrPolygon *polygon, XPointFixed *pt); - - -void -_XrPolygonInit(XrPolygon *polygon) -{ - polygon->num_edges = 0; - - polygon->edges_size = 0; - polygon->edges = NULL; - - polygon->first_pt_defined = 0; - polygon->last_pt_defined = 0; - - polygon->closed = 0; -} - -void -_XrPolygonDeinit(XrPolygon *polygon) -{ - if (polygon->edges_size) { - free(polygon->edges); - polygon->edges = NULL; - polygon->edges_size = 0; - polygon->num_edges = 0; - } - - polygon->first_pt_defined = 0; - polygon->last_pt_defined = 0; - - polygon->closed = 0; -} - -static XrStatus -_XrPolygonGrowBy(XrPolygon *polygon, int additional) -{ - XrEdge *new_edges; - int old_size = polygon->edges_size; - int new_size = polygon->num_edges + additional; - - if (new_size <= polygon->edges_size) { - return XrStatusSuccess; - } - - polygon->edges_size = new_size; - new_edges = realloc(polygon->edges, polygon->edges_size * sizeof(XrEdge)); - - if (new_edges == NULL) { - polygon->edges_size = old_size; - return XrStatusNoMemory; - } - - polygon->edges = new_edges; - - return XrStatusSuccess; -} - -static void -_XrPolygonSetLastPoint(XrPolygon *polygon, XPointFixed *pt) -{ - polygon->last_pt = *pt; - polygon->last_pt_defined = 1; -} - -XrStatus -_XrPolygonAddEdge(XrPolygon *polygon, XPointFixed *p1, XPointFixed *p2) -{ - XrStatus status; - XrEdge *edge; - - if (! polygon->first_pt_defined) { - polygon->first_pt = *p1; - polygon->first_pt_defined = 1; - polygon->closed = 0; - } - - /* drop horizontal edges */ - if (p1->y == p2->y) { - goto DONE; - } - - if (polygon->num_edges >= polygon->edges_size) { - status = _XrPolygonGrowBy(polygon, XR_POLYGON_GROWTH_INC); - if (status) { - return status; - } - } - - edge = &polygon->edges[polygon->num_edges]; - if (p1->y < p2->y) { - edge->edge.p1 = *p1; - edge->edge.p2 = *p2; - edge->clockWise = True; - } else { - edge->edge.p1 = *p2; - edge->edge.p2 = *p1; - edge->clockWise = False; - } - - polygon->num_edges++; - - DONE: - _XrPolygonSetLastPoint(polygon, p2); - - return XrStatusSuccess; -} - -XrStatus -_XrPolygonAddPoint(XrPolygon *polygon, XPointFixed *pt) -{ - XrStatus status = XrStatusSuccess; - - if (polygon->last_pt_defined) { - status = _XrPolygonAddEdge(polygon, &polygon->last_pt, pt); - } else { - _XrPolygonSetLastPoint(polygon, pt); - } - - return status; -} - -XrStatus -_XrPolygonClose(XrPolygon *polygon) -{ - XrStatus status; - - if (polygon->closed == 0 && polygon->last_pt_defined) { - status = _XrPolygonAddEdge(polygon, &polygon->last_pt, &polygon->first_pt); - if (status) - return status; - - polygon->closed = 1; - polygon->first_pt_defined = 0; - } - - return XrStatusSuccess; -} diff --git a/xrspline.c b/xrspline.c deleted file mode 100644 index d4e7c269b..000000000 --- a/xrspline.c +++ /dev/null @@ -1,269 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Carl D. Worth - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Carl - * D. Worth not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Carl D. Worth makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, - * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "xrint.h" - -static XrStatus -_XrSplineGrowBy(XrSpline *spline, int additional); - -static XrStatus -_XrSplineAddPoint(XrSpline *spline, XPointFixed *pt); - -static void -_LerpHalf(XPointFixed *a, XPointFixed *b, XPointFixed *result); - -static void -_DeCastlejau(XrSpline *spline, XrSpline *s1, XrSpline *s2); - -static double -_XrSplineErrorSquared(XrSpline *spline); - -static XrStatus -_XrSplineDecomposeInto(XrSpline *spline, double tolerance_squared, XrSpline *result); - -#define XR_SPLINE_GROWTH_INC 100 - -XrIntStatus -_XrSplineInit(XrSpline *spline, XPointFixed *a, XPointFixed *b, XPointFixed *c, XPointFixed *d) -{ - spline->a = *a; - spline->b = *b; - spline->c = *c; - spline->d = *d; - - if (a->x != b->x || a->y != b->y) { - _ComputeSlope(&spline->a, &spline->b, &spline->initial_slope); - } else if (a->x != c->x || a->y != c->y) { - _ComputeSlope(&spline->a, &spline->c, &spline->initial_slope); - } else if (a->x != d->x || a->y != d->y) { - _ComputeSlope(&spline->a, &spline->d, &spline->initial_slope); - } else { - return XrIntStatusDegenerate; - } - - if (c->x != d->x || c->y != d->y) { - _ComputeSlope(&spline->c, &spline->d, &spline->final_slope); - } else if (b->x != d->x || b->y != d->y) { - _ComputeSlope(&spline->b, &spline->d, &spline->final_slope); - } else { - _ComputeSlope(&spline->a, &spline->d, &spline->final_slope); - } - - spline->num_pts = 0; - spline->pts_size = 0; - spline->pts = NULL; - - return XrStatusSuccess; -} - -void -_XrSplineDeinit(XrSpline *spline) -{ - spline->num_pts = 0; - spline->pts_size = 0; - free(spline->pts); - spline->pts = NULL; -} - -static XrStatus -_XrSplineGrowBy(XrSpline *spline, int additional) -{ - XPointFixed *new_pts; - int old_size = spline->pts_size; - int new_size = spline->num_pts + additional; - - if (new_size <= spline->pts_size) - return XrStatusSuccess; - - spline->pts_size = new_size; - new_pts = realloc(spline->pts, spline->pts_size * sizeof(XPointFixed)); - - if (new_pts == NULL) { - spline->pts_size = old_size; - return XrStatusNoMemory; - } - - spline->pts = new_pts; - - return XrStatusSuccess; -} - -static XrStatus -_XrSplineAddPoint(XrSpline *spline, XPointFixed *pt) -{ - XrStatus status; - - if (spline->num_pts >= spline->pts_size) { - status = _XrSplineGrowBy(spline, XR_SPLINE_GROWTH_INC); - if (status) - return status; - } - - spline->pts[spline->num_pts] = *pt; - spline->num_pts++; - - return XrStatusSuccess; -} - -static void -_LerpHalf(XPointFixed *a, XPointFixed *b, XPointFixed *result) -{ - result->x = a->x + ((b->x - a->x) >> 1); - result->y = a->y + ((b->y - a->y) >> 1); -} - -static void -_DeCastlejau(XrSpline *spline, XrSpline *s1, XrSpline *s2) -{ - XPointFixed ab, bc, cd; - XPointFixed abbc, bccd; - XPointFixed final; - - _LerpHalf(&spline->a, &spline->b, &ab); - _LerpHalf(&spline->b, &spline->c, &bc); - _LerpHalf(&spline->c, &spline->d, &cd); - _LerpHalf(&ab, &bc, &abbc); - _LerpHalf(&bc, &cd, &bccd); - _LerpHalf(&abbc, &bccd, &final); - - s1->a = spline->a; - s1->b = ab; - s1->c = abbc; - s1->d = final; - - s2->a = final; - s2->b = bccd; - s2->c = cd; - s2->d = spline->d; -} - -static double -_PointDistanceSquaredToPoint(XPointFixed *a, XPointFixed *b) -{ - double dx = XFixedToDouble(b->x - a->x); - double dy = XFixedToDouble(b->y - a->y); - - return dx*dx + dy*dy; -} - -static double -_PointDistanceSquaredToSegment(XPointFixed *p, XPointFixed *p1, XPointFixed *p2) -{ - double u; - double dx, dy; - double pdx, pdy; - XPointFixed px; - - /* intersection point (px): - - px = p1 + u(p2 - p1) - (p - px) . (p2 - p1) = 0 - - Thus: - - u = ((p - p1) . (p2 - p1)) / (||(p2 - p1)|| ^ 2); - */ - - dx = XFixedToDouble(p2->x - p1->x); - dy = XFixedToDouble(p2->y - p1->y); - - if (dx == 0 && dy == 0) - return _PointDistanceSquaredToPoint(p, p1); - - pdx = XFixedToDouble(p->x - p1->x); - pdy = XFixedToDouble(p->y - p1->y); - - u = (pdx * dx + pdy * dy) / (dx*dx + dy*dy); - - if (u <= 0) - return _PointDistanceSquaredToPoint(p, p1); - else if (u >= 1) - return _PointDistanceSquaredToPoint(p, p2); - - px.x = p1->x + u * (p2->x - p1->x); - px.y = p1->y + u * (p2->y - p1->y); - - return _PointDistanceSquaredToPoint(p, &px); -} - -/* Return an upper bound on the error (squared) that could result from approximating - a spline as a line segment connecting the two endpoints */ -static double -_XrSplineErrorSquared(XrSpline *spline) -{ - double berr, cerr; - - berr = _PointDistanceSquaredToSegment(&spline->b, &spline->a, &spline->d); - cerr = _PointDistanceSquaredToSegment(&spline->c, &spline->a, &spline->d); - - if (berr > cerr) - return berr; - else - return cerr; -} - -static XrStatus -_XrSplineDecomposeInto(XrSpline *spline, double tolerance_squared, XrSpline *result) -{ - XrStatus status; - XrSpline s1, s2; - - if (_XrSplineErrorSquared(spline) < tolerance_squared) { - return _XrSplineAddPoint(result, &spline->a); - } - - _DeCastlejau(spline, &s1, &s2); - - status = _XrSplineDecomposeInto(&s1, tolerance_squared, result); - if (status) - return status; - - status = _XrSplineDecomposeInto(&s2, tolerance_squared, result); - if (status) - return status; - - return XrStatusSuccess; -} - -XrStatus -_XrSplineDecompose(XrSpline *spline, double tolerance) -{ - XrStatus status; - - if (spline->pts_size) { - _XrSplineDeinit(spline); - } - - status = _XrSplineDecomposeInto(spline, tolerance * tolerance, spline); - if (status) - return status; - - status = _XrSplineAddPoint(spline, &spline->d); - if (status) - return status; - - return XrStatusSuccess; -} - diff --git a/xrstate.c b/xrstate.c deleted file mode 100644 index 720f33705..000000000 --- a/xrstate.c +++ /dev/null @@ -1,109 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Carl D. Worth - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Carl - * D. Worth not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Carl D. Worth makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, - * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include <stdlib.h> -#include "xrint.h" - -XrState * -_XrStateCreate(Display *dpy) -{ - XrStatus status; - XrState *xrs; - - xrs = malloc(sizeof(XrState)); - - if (xrs) { - status = _XrStateInit(xrs, dpy); - if (status) { - free(xrs); - return NULL; - } - } - - return xrs; -} - -XrStatus -_XrStateInit(XrState *xrs, Display *dpy) -{ - xrs->dpy = dpy; - xrs->stack = NULL; - - xrs->status = XrStatusSuccess; - - return _XrStatePush(xrs); -} - -void -_XrStateDeinit(XrState *xrs) -{ - while (xrs->stack) { - _XrStatePop(xrs); - } -} - -void -_XrStateDestroy(XrState *xrs) -{ - _XrStateDeinit(xrs); - free(xrs); -} - -XrStatus -_XrStatePush(XrState *xrs) -{ - XrGState *top; - - if (xrs->stack) { - top = _XrGStateClone(xrs->stack); - } else { - top = _XrGStateCreate(xrs->dpy); - } - - if (top == NULL) - return XrStatusNoMemory; - - top->next = xrs->stack; - xrs->stack = top; - - return XrStatusSuccess; -} - -XrStatus -_XrStatePop(XrState *xrs) -{ - XrGState *top; - - if (xrs->stack == NULL) - return XrStatusInvalidRestore; - - top = xrs->stack; - xrs->stack = top->next; - - _XrGStateDestroy(top); - - return XrStatusSuccess; -} - diff --git a/xrstroker.c b/xrstroker.c deleted file mode 100644 index 07592dea9..000000000 --- a/xrstroker.c +++ /dev/null @@ -1,643 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Carl D. Worth - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Carl - * D. Worth not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Carl D. Worth makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, - * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "xrint.h" - -/* private functions */ -static void -_TranslatePoint(XPointFixed *pt, XPointFixed *offset); - -static int -_XrStrokerFaceClockwise(XrStrokeFace *in, XrStrokeFace *out); - -static XrStatus -_XrStrokerJoin(XrStroker *stroker, XrStrokeFace *in, XrStrokeFace *out); - -static void -_XrStrokerStartDash (XrStroker *stroker) -{ - XrGState *gstate = stroker->gstate; - double offset; - int on = 1; - int i = 0; - - offset = gstate->dash_offset; - while (offset >= gstate->dash[i]) { - offset -= gstate->dash[i]; - on = 1-on; - if (++i == gstate->num_dashes) - i = 0; - } - stroker->dash_index = i; - stroker->dash_on = on; - stroker->dash_remain = gstate->dash[i] - offset; -} - -static void -_XrStrokerStepDash (XrStroker *stroker, double step) -{ - XrGState *gstate = stroker->gstate; - stroker->dash_remain -= step; - if (stroker->dash_remain <= 0) { - stroker->dash_index++; - if (stroker->dash_index == gstate->num_dashes) - stroker->dash_index = 0; - stroker->dash_on = 1-stroker->dash_on; - stroker->dash_remain = gstate->dash[stroker->dash_index]; - } -} - -void -_XrStrokerInit(XrStroker *stroker, XrGState *gstate, XrTraps *traps) -{ - stroker->gstate = gstate; - stroker->traps = traps; - stroker->have_prev = 0; - stroker->have_first = 0; - stroker->is_first = 1; - if (gstate->dash) - _XrStrokerStartDash (stroker); -} - -void -_XrStrokerDeinit(XrStroker *stroker) -{ - /* nothing to do here */ -} - -static void -_TranslatePoint(XPointFixed *pt, XPointFixed *offset) -{ - pt->x += offset->x; - pt->y += offset->y; -} - -static int -_XrStrokerFaceClockwise(XrStrokeFace *in, XrStrokeFace *out) -{ - XPointDouble d_in, d_out; - - d_in.x = XFixedToDouble(in->cw.x - in->pt.x); - d_in.y = XFixedToDouble(in->cw.y - in->pt.y); - d_out.x = XFixedToDouble(out->cw.x - out->pt.x); - d_out.y = XFixedToDouble(out->cw.y - out->pt.y); - - return d_out.y * d_in.x > d_in.y * d_out.x; -} - -static XrStatus -_XrStrokerJoin(XrStroker *stroker, XrStrokeFace *in, XrStrokeFace *out) -{ - XrStatus status; - XrGState *gstate = stroker->gstate; - int clockwise = _XrStrokerFaceClockwise (out, in); - XPointFixed *inpt, *outpt; - - if (in->cw.x == out->cw.x - && in->cw.y == out->cw.y - && in->ccw.x == out->ccw.x - && in->ccw.y == out->ccw.y) { - return XrStatusSuccess; - } - - if (clockwise) { - inpt = &in->ccw; - outpt = &out->ccw; - } else { - inpt = &in->cw; - outpt = &out->cw; - } - - switch (gstate->line_join) { - case XrLineJoinRound: { - int i; - int start, step, stop; - XPointFixed tri[3], initial, final; - XrPen *pen = &gstate->pen_regular; - - tri[0] = in->pt; - if (clockwise) { - initial = in->ccw; - _XrPenFindActiveCCWVertexIndex(pen, &in->dev_vector, &start); - step = -1; - _XrPenFindActiveCCWVertexIndex(pen, &out->dev_vector, &stop); - final = out->ccw; - } else { - initial = in->cw; - _XrPenFindActiveCWVertexIndex(pen, &in->dev_vector, &start); - step = +1; - _XrPenFindActiveCWVertexIndex(pen, &out->dev_vector, &stop); - final = out->cw; - } - - i = start; - tri[1] = initial; - while (i != stop) { - tri[2] = in->pt; - _TranslatePoint(&tri[2], &pen->vertex[i].pt); - _XrTrapsTessellateTriangle(stroker->traps, tri); - tri[1] = tri[2]; - i += step; - if (i < 0) - i = pen->num_vertices - 1; - if (i >= pen->num_vertices) - i = 0; - } - - tri[2] = final; - - return _XrTrapsTessellateTriangle(stroker->traps, tri); - } - case XrLineJoinMiter: - default: { - XrPolygon polygon; - XDouble c = (-in->usr_vector.x * out->usr_vector.x)+(-in->usr_vector.y * out->usr_vector.y); - XDouble ml = gstate->miter_limit; - - _XrPolygonInit (&polygon); - - if (2 <= ml * ml * (1 - c)) { - XDouble x1, y1, x2, y2; - XDouble mx, my; - XDouble dx1, dx2, dy1, dy2; - XPointFixed outer; - - x1 = XFixedToDouble(inpt->x); - y1 = XFixedToDouble(inpt->y); - dx1 = in->usr_vector.x; - dy1 = in->usr_vector.y; - _XrTransformDistance(&gstate->ctm, &dx1, &dy1); - - x2 = XFixedToDouble(outpt->x); - y2 = XFixedToDouble(outpt->y); - dx2 = out->usr_vector.x; - dy2 = out->usr_vector.y; - _XrTransformDistance(&gstate->ctm, &dx2, &dy2); - - my = (((x2 - x1) * dy1 * dy2 - y2 * dx2 * dy1 + y1 * dx1 * dy2) / - (dx1 * dy2 - dx2 * dy1)); - if (dy1) - mx = (my - y1) * dx1 / dy1 + x1; - else - mx = (my - y2) * dx2 / dy2 + x2; - - outer.x = XDoubleToFixed(mx); - outer.y = XDoubleToFixed(my); - _XrPolygonAddEdge (&polygon, &in->pt, inpt); - _XrPolygonAddEdge (&polygon, inpt, &outer); - _XrPolygonAddEdge (&polygon, &outer, outpt); - _XrPolygonAddEdge (&polygon, outpt, &in->pt); - status = _XrTrapsTessellatePolygon (stroker->traps, - &polygon, - XrFillRuleWinding); - _XrPolygonDeinit (&polygon); - - return status; - } - /* fall through ... */ - } - case XrLineJoinBevel: { - XPointFixed tri[3]; - tri[0] = in->pt; - tri[1] = *inpt; - tri[2] = *outpt; - - return _XrTrapsTessellateTriangle (stroker->traps, tri); - } - } -} - -static XrStatus -_XrStrokerCap(XrStroker *stroker, XrStrokeFace *f) -{ - XrStatus status; - XrGState *gstate = stroker->gstate; - - if (gstate->line_cap == XrLineCapButt) - return XrStatusSuccess; - - switch (gstate->line_cap) { - case XrLineCapRound: { - int i; - int start, stop; - XrSlopeFixed slope; - XPointFixed tri[3]; - XrPen *pen = &gstate->pen_regular; - - slope = f->dev_vector; - _XrPenFindActiveCWVertexIndex(pen, &slope, &start); - slope.dx = -slope.dx; - slope.dy = -slope.dy; - _XrPenFindActiveCWVertexIndex(pen, &slope, &stop); - - tri[0] = f->pt; - tri[1] = f->cw; - for (i=start; i != stop; i = (i+1) % pen->num_vertices) { - tri[2] = f->pt; - _TranslatePoint(&tri[2], &pen->vertex[i].pt); - _XrTrapsTessellateTriangle(stroker->traps, tri); - tri[1] = tri[2]; - } - tri[2] = f->ccw; - - return _XrTrapsTessellateTriangle(stroker->traps, tri); - } - case XrLineCapSquare: { - double dx, dy; - XrSlopeFixed fvector; - XPointFixed occw, ocw; - XrPolygon polygon; - - _XrPolygonInit (&polygon); - - dx = f->usr_vector.x; - dy = f->usr_vector.y; - dx *= gstate->line_width / 2.0; - dy *= gstate->line_width / 2.0; - _XrTransformDistance(&gstate->ctm, &dx, &dy); - fvector.dx = XDoubleToFixed(dx); - fvector.dy = XDoubleToFixed(dy); - occw.x = f->ccw.x + fvector.dx; - occw.y = f->ccw.y + fvector.dy; - ocw.x = f->cw.x + fvector.dx; - ocw.y = f->cw.y + fvector.dy; - - _XrPolygonAddEdge (&polygon, &f->cw, &ocw); - _XrPolygonAddEdge (&polygon, &ocw, &occw); - _XrPolygonAddEdge (&polygon, &occw, &f->ccw); - _XrPolygonAddEdge (&polygon, &f->ccw, &f->cw); - - status = _XrTrapsTessellatePolygon (stroker->traps, &polygon, XrFillRuleWinding); - _XrPolygonDeinit (&polygon); - - return status; - } - case XrLineCapButt: - default: - return XrStatusSuccess; - } -} - -static void -_ComputeFace(XPointFixed *pt, XrSlopeFixed *slope, XrGState *gstate, XrStrokeFace *face) -{ - double mag, tmp; - double dx, dy; - XPointDouble usr_vector; - XPointFixed offset_ccw, offset_cw; - - dx = XFixedToDouble(slope->dx); - dy = XFixedToDouble(slope->dy); - - _XrTransformDistance(&gstate->ctm_inverse, &dx, &dy); - - mag = sqrt(dx * dx + dy * dy); - if (mag == 0) { - /* XXX: Can't compute other face points. Do we want a tag in the face for this case? */ - return; - } - - dx /= mag; - dy /= mag; - - usr_vector.x = dx; - usr_vector.y = dy; - - tmp = dx; - dx = - dy * (gstate->line_width / 2.0); - dy = tmp * (gstate->line_width / 2.0); - - _XrTransformDistance(&gstate->ctm, &dx, &dy); - - offset_ccw.x = XDoubleToFixed(dx); - offset_ccw.y = XDoubleToFixed(dy); - offset_cw.x = -offset_ccw.x; - offset_cw.y = -offset_ccw.y; - - face->ccw = *pt; - _TranslatePoint(&face->ccw, &offset_ccw); - - face->pt = *pt; - - face->cw = *pt; - _TranslatePoint(&face->cw, &offset_cw); - - face->usr_vector.x = usr_vector.x; - face->usr_vector.y = usr_vector.y; - - face->dev_vector = *slope; -} - -static XrStatus -_XrStrokerAddSubEdge (XrStroker *stroker, XPointFixed *p1, XPointFixed *p2, - XrStrokeFace *start, XrStrokeFace *end) -{ - XrGState *gstate = stroker->gstate; - XPointFixed quad[4]; - XrSlopeFixed slope; - - if (p1->x == p2->x && p1->y == p2->y) { - /* XXX: Need to rethink how this case should be handled, (both - here and in _ComputeFace). The key behavior is that - degenerate paths should draw as much as possible. */ - return XrStatusSuccess; - } - - _ComputeSlope(p1, p2, &slope); - _ComputeFace(p1, &slope, gstate, start); - - /* XXX: This could be optimized slightly by not calling - _ComputeFace again but rather translating the relevant - fields from start. */ - _ComputeFace(p2, &slope, gstate, end); - - quad[0] = start->cw; - quad[1] = start->ccw; - quad[2] = end->ccw; - quad[3] = end->cw; - - return _XrTrapsTessellateRectangle(stroker->traps, quad); -} - -XrStatus -_XrStrokerAddEdge(void *closure, XPointFixed *p1, XPointFixed *p2) -{ - XrStatus status; - XrStroker *stroker = closure; - XrStrokeFace start, end; - - if (p1->x == p2->x && p1->y == p2->y) { - /* XXX: Need to rethink how this case should be handled, (both - here and in XrStrokerAddSubEdge and in _ComputeFace). The - key behavior is that degenerate paths should draw as much - as possible. */ - return XrStatusSuccess; - } - - status = _XrStrokerAddSubEdge (stroker, p1, p2, &start, &end); - if (status) - return status; - - if (stroker->have_prev) { - status = _XrStrokerJoin (stroker, &stroker->prev, &start); - if (status) - return status; - } else { - stroker->have_prev = 1; - if (stroker->is_first) { - stroker->have_first = 1; - stroker->first = start; - } - } - stroker->prev = end; - stroker->is_first = 0; - - return XrStatusSuccess; -} - -/* - * Dashed lines. Cap each dash end, join around turns when on - */ -XrStatus -_XrStrokerAddEdgeDashed (void *closure, XPointFixed *p1, XPointFixed *p2) -{ - XrStatus status = XrStatusSuccess; - XrStroker *stroker = closure; - XrGState *gstate = stroker->gstate; - double mag, remain, tmp; - double dx, dy; - double dx2, dy2; - XPointFixed fd1, fd2; - int first = 1; - XrStrokeFace sub_start, sub_end; - - dx = XFixedToDouble(p2->x - p1->x); - dy = XFixedToDouble(p2->y - p1->y); - - _XrTransformDistance(&gstate->ctm_inverse, &dx, &dy); - - mag = sqrt(dx *dx + dy * dy); - remain = mag; - fd1 = *p1; - while (remain) { - tmp = stroker->dash_remain; - if (tmp > remain) - tmp = remain; - remain -= tmp; - dx2 = dx * (mag - remain)/mag; - dy2 = dy * (mag - remain)/mag; - _XrTransformDistance (&gstate->ctm, &dx2, &dy2); - fd2.x = XDoubleToFixed (dx2); - fd2.y = XDoubleToFixed (dy2); - fd2.x += p1->x; - fd2.y += p1->y; - /* - * XXX simplify this case analysis - */ - if (stroker->dash_on) { - status = _XrStrokerAddSubEdge (stroker, &fd1, &fd2, &sub_start, &sub_end); - if (status) - return status; - if (!first) { - /* - * Not first dash in this segment, cap start - */ - status = _XrStrokerCap (stroker, &sub_start); - if (status) - return status; - } else { - /* - * First in this segment, join to any prev, else - * if at start of sub-path, mark position, else - * cap - */ - if (stroker->have_prev) { - status = _XrStrokerJoin (stroker, &stroker->prev, &sub_start); - if (status) - return status; - } else { - if (stroker->is_first) { - stroker->have_first = 1; - stroker->first = sub_start; - } else { - status = _XrStrokerCap (stroker, &sub_start); - if (status) - return status; - } - } - } - if (remain) { - /* - * Cap if not at end of segment - */ - status = _XrStrokerCap (stroker, &sub_end); - if (status) - return status; - } else { - /* - * Mark previous line face and fix up next time - * through - */ - stroker->prev = sub_end; - stroker->have_prev = 1; - } - } else { - /* - * If starting with off dash, check previous face - * and cap if necessary - */ - if (first) { - if (stroker->have_prev) { - status = _XrStrokerCap (stroker, &stroker->prev); - if (status) - return status; - } - } - if (!remain) - stroker->have_prev = 0; - } - _XrStrokerStepDash (stroker, tmp); - fd1 = fd2; - first = 0; - } - stroker->is_first = 0; - return status; -} - -XrStatus -_XrStrokerAddSpline (void *closure, XPointFixed *a, XPointFixed *b, XPointFixed *c, XPointFixed *d) -{ - XrStatus status = XrStatusSuccess; - XrStroker *stroker = closure; - XrGState *gstate = stroker->gstate; - XrSpline spline; - XrPen pen; - XrStrokeFace start, end; - XPointFixed extra_points[4]; - - status = _XrSplineInit(&spline, a, b, c, d); - if (status == XrIntStatusDegenerate) - return XrStatusSuccess; - - status = _XrPenInitCopy(&pen, &gstate->pen_regular); - if (status) - goto CLEANUP_SPLINE; - - _ComputeFace(a, &spline.initial_slope, gstate, &start); - _ComputeFace(d, &spline.final_slope, gstate, &end); - - if (stroker->have_prev) { - status = _XrStrokerJoin (stroker, &stroker->prev, &start); - if (status) - return status; - } else { - stroker->have_prev = 1; - if (stroker->is_first) { - stroker->have_first = 1; - stroker->first = start; - } - } - stroker->prev = end; - stroker->is_first = 0; - - extra_points[0] = start.cw; - extra_points[0].x -= start.pt.x; - extra_points[0].y -= start.pt.y; - extra_points[1] = start.ccw; - extra_points[1].x -= start.pt.x; - extra_points[1].y -= start.pt.y; - extra_points[2] = end.cw; - extra_points[2].x -= end.pt.x; - extra_points[2].y -= end.pt.y; - extra_points[3] = end.ccw; - extra_points[3].x -= end.pt.x; - extra_points[3].y -= end.pt.y; - - status = _XrPenAddPoints(&pen, extra_points, 4); - if (status) - goto CLEANUP_PEN; - - status = _XrPenStrokeSpline(&pen, &spline, gstate->tolerance, stroker->traps); - if (status) - goto CLEANUP_PEN; - - CLEANUP_PEN: - _XrPenDeinit(&pen); - CLEANUP_SPLINE: - _XrSplineDeinit(&spline); - - return status; -} - -XrStatus -_XrStrokerDoneSubPath (void *closure, XrSubPathDone done) -{ - XrStatus status; - XrStroker *stroker = closure; - - switch (done) { - case XrSubPathDoneJoin: - if (stroker->have_first && stroker->have_prev) { - status = _XrStrokerJoin (stroker, &stroker->prev, &stroker->first); - if (status) - return status; - break; - } - /* fall through... */ - case XrSubPathDoneCap: - if (stroker->have_first) { - XPointFixed t; - /* The initial cap needs an outward facing vector. Reverse everything */ - stroker->first.usr_vector.x = -stroker->first.usr_vector.x; - stroker->first.usr_vector.y = -stroker->first.usr_vector.y; - stroker->first.dev_vector.dx = -stroker->first.dev_vector.dx; - stroker->first.dev_vector.dy = -stroker->first.dev_vector.dy; - t = stroker->first.cw; - stroker->first.cw = stroker->first.ccw; - stroker->first.ccw = t; - status = _XrStrokerCap (stroker, &stroker->first); - if (status) - return status; - } - if (stroker->have_prev) { - status = _XrStrokerCap (stroker, &stroker->prev); - if (status) - return status; - } - break; - } - - stroker->have_prev = 0; - stroker->have_first = 0; - stroker->is_first = 1; - - return XrStatusSuccess; -} - -XrStatus -_XrStrokerDonePath (void *closure) -{ - return XrStatusSuccess; -} diff --git a/xrsurface.c b/xrsurface.c deleted file mode 100644 index d3a849a55..000000000 --- a/xrsurface.c +++ /dev/null @@ -1,323 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Carl D. Worth - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Carl - * D. Worth not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Carl D. Worth makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, - * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include <stdlib.h> - -#include "xrint.h" - -XrSurface * -_XrSurfaceCreate(Display *dpy) -{ - XrSurface *surface; - - surface = malloc(sizeof(XrSurface)); - - if (surface) - _XrSurfaceInit(surface, dpy); - - return surface; -} - -void -_XrSurfaceInit(XrSurface *surface, Display *dpy) -{ - surface->dpy = dpy; - - surface->drawable = 0; - surface->gc = 0; - - surface->width = 0; - surface->height = 0; - surface->depth = 0; - - surface->xc_sa_mask = 0; - - _XrSurfaceSetFormat(surface, XrFormatARGB32); - - surface->xc_surface = 0; - surface->needs_new_xc_surface = 1; - - surface->ref_count = 0; -} - -void -_XrSurfaceDeinit(XrSurface *surface) -{ - if (surface->xc_surface) - XcFreeSurface(surface->dpy, surface->xc_surface); - if (surface->gc) - XFreeGC(surface->dpy, surface->gc); -} - -void -_XrSurfaceDestroy(XrSurface *surface) -{ - _XrSurfaceDeinit(surface); - free(surface); -} - -void -_XrSurfaceReference(XrSurface *surface) -{ - surface->ref_count++; -} - -void -_XrSurfaceDereference(XrSurface *surface) -{ - if (surface->ref_count == 0) - _XrSurfaceDeinit(surface); - else - surface->ref_count--; -} - -void -_XrSurfaceDereferenceDestroy(XrSurface *surface) -{ - if (surface->ref_count == 0) - _XrSurfaceDestroy(surface); - else - _XrSurfaceDereference(surface); -} - -void -_XrSurfaceSetSolidColor(XrSurface *surface, XrColor *color) -{ - /* XXX: QUESTION: Special handling for depth==1 ala xftdraw.c? */ - if (surface->xc_surface == 0) { - Pixmap pix = XCreatePixmap(surface->dpy, - DefaultRootWindow(surface->dpy), - 1, 1, - surface->xc_format->depth); - _XrSurfaceSetDrawableWH(surface, pix, 1, 1); - surface->xc_sa_mask |= CPRepeat; - surface->xc_sa.repeat = True; - _XrSurfaceGetXcSurface(surface); - XFreePixmap(surface->dpy, pix); - } - - XcFillRectangle(surface->dpy, PictOpSrc, - surface->xc_surface, &color->xc_color, - 0, 0, 1, 1); -} - -XrStatus -_XrSurfaceSetImage(XrSurface *surface, - char *data, - unsigned int width, - unsigned int height, - unsigned int stride) -{ - XImage *image; - unsigned int depth, bitmap_pad; - Pixmap pix; - - depth = surface->xc_format->depth; - - if (depth > 16) - bitmap_pad = 32; - else if (depth > 8) - bitmap_pad = 16; - else - bitmap_pad = 8; - - pix = XCreatePixmap(surface->dpy, - DefaultRootWindow(surface->dpy), - width, height, - depth); - _XrSurfaceSetDrawableWH(surface, pix, width, height); - - image = XCreateImage(surface->dpy, - DefaultVisual(surface->dpy, DefaultScreen(surface->dpy)), - depth, ZPixmap, 0, - data, width, height, - bitmap_pad, - stride); - if (image == NULL) - return XrStatusNoMemory; - - XPutImage(surface->dpy, surface->drawable, surface->gc, - image, 0, 0, 0, 0, width, height); - - - /* I want to free the pixmap, so I have to commit to an xc_surface - to reference the pixmap in the Picture. */ - _XrSurfaceGetXcSurface(surface); - XFreePixmap(surface->dpy, pix); - - /* Foolish XDestroyImage thinks it can free my data, but I won't - stand for it. */ - image->data = NULL; - XDestroyImage(image); - - return XrStatusSuccess; -} - -/* XXX: We may want to move to projective matrices at some point. If - nothing else, that would eliminate the two different transform data - structures we have here. */ -XrStatus -_XrSurfaceSetTransform(XrSurface *surface, XrTransform *transform) -{ - XTransform xtransform; - - xtransform.matrix[0][0] = XDoubleToFixed(transform->m[0][0]); - xtransform.matrix[0][1] = XDoubleToFixed(transform->m[1][0]); - xtransform.matrix[0][2] = XDoubleToFixed(transform->m[2][0]); - - xtransform.matrix[1][0] = XDoubleToFixed(transform->m[0][1]); - xtransform.matrix[1][1] = XDoubleToFixed(transform->m[1][1]); - xtransform.matrix[1][2] = XDoubleToFixed(transform->m[2][1]); - - xtransform.matrix[2][0] = 0; - xtransform.matrix[2][1] = 0; - xtransform.matrix[2][2] = XDoubleToFixed(1); - - XcSetSurfaceTransform(surface->dpy, - _XrSurfaceGetXcSurface(surface), - &xtransform); - - return XrStatusSuccess; -} - -void -_XrSurfaceSetDrawable(XrSurface *surface, Drawable drawable) -{ - Window root; - int x, y; - unsigned int border, depth; - unsigned int width, height; - - XGetGeometry (surface->dpy, drawable, - &root, &x, &y, - &width, &height, - &border, &depth); - - _XrSurfaceSetDrawableWH(surface, drawable, width, height); -} - -void -_XrSurfaceSetDrawableWH(XrSurface *surface, - Drawable drawable, - unsigned int width, - unsigned int height) -{ - if (surface->gc) - XFreeGC(surface->dpy, surface->gc); - - surface->drawable = drawable; - surface->width = width; - surface->height = height; - surface->gc = XCreateGC(surface->dpy, surface->drawable, 0, 0); - - surface->needs_new_xc_surface = 1; -} - -void -_XrSurfaceSetVisual(XrSurface *surface, Visual *visual) -{ - surface->xc_format = XcFindVisualFormat(surface->dpy, visual); - surface->needs_new_xc_surface = 1; -} - -void -_XrSurfaceSetFormat(XrSurface *surface, XrFormat format) -{ - surface->format = format; - surface->xc_format = XcFindStandardFormat(surface->dpy, format); - - switch (surface->format) { - case XrFormatARGB32: - surface->depth = 32; - case XrFormatRGB32: - /* XXX: Is this correct? */ - surface->depth = 24; - case XrFormatA8: - surface->depth = 8; - case XrFormatA1: - surface->depth = 1; - default: - surface->depth = 32; - } - - surface->needs_new_xc_surface = 1; -} - -XcSurface * -_XrSurfaceGetXcSurface(XrSurface *surface) -{ - if (surface == NULL) - return NULL; - - if (! surface->needs_new_xc_surface) - return surface->xc_surface; - - if (surface->xc_surface) - XcFreeSurface(surface->dpy, surface->xc_surface); - - if (surface->drawable) - surface->xc_surface = XcCreateDrawableSurface(surface->dpy, - surface->drawable, - surface->xc_format, - surface->xc_sa_mask, - &surface->xc_sa); - else - /* XXX: Is this what we wnat to do here? */ - surface->xc_surface = 0; - - surface->needs_new_xc_surface = 0; - - return surface->xc_surface; -} - -Picture -_XrSurfaceGetPicture(XrSurface *surface) -{ - return XcSurfaceGetPicture(_XrSurfaceGetXcSurface(surface)); -} - -Drawable -_XrSurfaceGetDrawable(XrSurface *surface) -{ - return surface->drawable; -} - -unsigned int -_XrSurfaceGetWidth(XrSurface *surface) -{ - return surface->width; -} - -unsigned int -_XrSurfaceGetHeight(XrSurface *surface) -{ - return surface->height; -} - -unsigned int -_XrSurfaceGetDepth(XrSurface *surface) -{ - return surface->depth; -} diff --git a/xrtransform.c b/xrtransform.c deleted file mode 100644 index 93e7ea235..000000000 --- a/xrtransform.c +++ /dev/null @@ -1,301 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Carl D. Worth - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Carl - * D. Worth not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Carl D. Worth makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL, - * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include <stdlib.h> -#include <math.h> - -#include "xrint.h" - -static XrTransform XR_TRANSFORM_IDENTITY = { - { - {1, 0}, - {0, 1}, - {0, 0} - } -}; - -static void -_XrTransformScalarMultiply(XrTransform *transform, double scalar); - -static void -_XrTransformComputeAdjoint(XrTransform *transform); - -void -_XrTransformInitIdentity(XrTransform *transform) -{ - *transform = XR_TRANSFORM_IDENTITY; -} - -void -_XrTransformDeinit(XrTransform *transform) -{ - /* nothing to do here */ -} - -void -_XrTransformInitMatrix(XrTransform *transform, - double a, double b, - double c, double d, - double tx, double ty) -{ - transform->m[0][0] = a; transform->m[0][1] = b; - transform->m[1][0] = c; transform->m[1][1] = d; - transform->m[2][0] = tx; transform->m[2][1] = ty; -} - -void -_XrTransformInitTranslate(XrTransform *transform, - double tx, double ty) -{ - _XrTransformInitMatrix(transform, - 1, 0, - 0, 1, - tx, ty); -} - -void -_XrTransformInitScale(XrTransform *transform, - double sx, double sy) -{ - _XrTransformInitMatrix(transform, - sx, 0, - 0, sy, - 0, 0); -} - -void -_XrTransformInitRotate(XrTransform *transform, - double angle) -{ - _XrTransformInitMatrix(transform, - cos(angle), sin(angle), - -sin(angle), cos(angle), - 0, 0); -} - -void -_XrTransformMultiplyIntoLeft(XrTransform *t1, const XrTransform *t2) -{ - XrTransform new; - - _XrTransformMultiply(t1, t2, &new); - - *t1 = new; -} - -void -_XrTransformMultiplyIntoRight(const XrTransform *t1, XrTransform *t2) -{ - XrTransform new; - - _XrTransformMultiply(t1, t2, &new); - - *t2 = new; -} - -void -_XrTransformMultiply(const XrTransform *t1, const XrTransform *t2, XrTransform *new) -{ - int row, col, n; - double t; - - for (row = 0; row < 3; row++) { - for (col = 0; col < 2; col++) { - if (row == 2) - t = t2->m[2][col]; - else - t = 0; - for (n = 0; n < 2; n++) { - t += t1->m[row][n] * t2->m[n][col]; - } - new->m[row][col] = t; - } - } -} - -void -_XrTransformDistance(XrTransform *transform, double *dx, double *dy) -{ - double new_x, new_y; - - new_x = (transform->m[0][0] * *dx - + transform->m[1][0] * *dy); - new_y = (transform->m[0][1] * *dx - + transform->m[1][1] * *dy); - - *dx = new_x; - *dy = new_y; -} - -void -_XrTransformPoint(XrTransform *transform, double *x, double *y) -{ - _XrTransformDistance(transform, x, y); - - *x += transform->m[2][0]; - *y += transform->m[2][1]; -} - -void -_XrTransformBoundingBox(XrTransform *transform, - double *x, double *y, - double *width, double *height) -{ - int i; - double quad_x[4], quad_y[4]; - double dx1, dy1; - double dx2, dy2; - double min_x, max_x; - double min_y, max_y; - - quad_x[0] = *x; - quad_y[0] = *y; - _XrTransformPoint(transform, &quad_x[0], &quad_y[0]); - - dx1 = *width; - dy1 = 0; - _XrTransformDistance(transform, &dx1, &dy1); - quad_x[1] = quad_x[0] + dx1; - quad_y[1] = quad_y[0] + dy1; - - dx2 = 0; - dy2 = *height; - _XrTransformDistance(transform, &dx2, &dy2); - quad_x[2] = quad_x[0] + dx2; - quad_y[2] = quad_y[0] + dy2; - - quad_x[3] = quad_x[0] + dx1 + dx2; - quad_y[3] = quad_y[0] + dy1 + dy2; - - min_x = max_x = quad_x[0]; - min_y = max_y = quad_y[0]; - - for (i=1; i < 4; i++) { - if (quad_x[i] < min_x) - min_x = quad_x[i]; - if (quad_x[i] > max_x) - max_x = quad_x[i]; - - if (quad_y[i] < min_y) - min_y = quad_y[i]; - if (quad_y[i] > max_y) - max_y = quad_y[i]; - } - - *x = min_x; - *y = min_y; - *width = max_x - min_x; - *height = max_y - min_y; -} - -static void -_XrTransformScalarMultiply(XrTransform *transform, double scalar) -{ - int row, col; - - for (row = 0; row < 3; row++) - for (col = 0; col < 2; col++) - transform->m[row][col] *= scalar; -} - -/* This function isn't a correct adjoint in that the implicit 1 in the - homogeneous result should actually be ad-bc instead. But, since this - adjoint is only used in the computation of the inverse, which - divides by det(A)=ad-bc anyway, everything works out in the end. */ -static void -_XrTransformComputeAdjoint(XrTransform *transform) -{ - /* adj(A) = transpose(C:cofactor(A,i,j)) */ - double a, b, c, d, tx, ty; - - a = transform->m[0][0]; b = transform->m[0][1]; - c = transform->m[1][0]; d = transform->m[1][1]; - tx = transform->m[2][0]; ty = transform->m[2][1]; - - _XrTransformInitMatrix(transform, - d, -b, - -c, a, - c*ty - d*tx, b*tx - a*ty); -} - -XrStatus -_XrTransformComputeInverse(XrTransform *transform) -{ - /* inv(A) = 1/det(A) * adj(A) */ - double det; - - _XrTransformComputeDeterminant(transform, &det); - - if (det == 0) - return XrStatusInvalidMatrix; - - _XrTransformComputeAdjoint(transform); - _XrTransformScalarMultiply(transform, 1 / det); - - return XrStatusSuccess; -} - -void -_XrTransformComputeDeterminant(XrTransform *transform, double *det) -{ - double a, b, c, d; - - a = transform->m[0][0]; b = transform->m[0][1]; - c = transform->m[1][0]; d = transform->m[1][1]; - - *det = a*d - b*c; -} - -void -_XrTransformEigenValues(XrTransform *transform, double *lambda1, double *lambda2) -{ - /* The eigenvalues of an NxN matrix M are found by solving the polynomial: - - det(M - lI) = 0 - - The zeros in our homogeneous 3x3 matrix make this equation equal - to that formed by the sub-matrix: - - M = a b - c d - - by which: - - l^2 - (a+d)l + (ad - bc) = 0 - - l = (a+d +/- sqrt(a^2 + 2ad + d^2 - 4(ad-bc))) / 2; - */ - - double a, b, c, d, rad; - - a = transform->m[0][0]; - b = transform->m[0][1]; - c = transform->m[1][0]; - d = transform->m[1][1]; - - rad = sqrt(a*a + 2*a*d + d*d - 4*(a*d - b*c)); - *lambda1 = (a + d + rad) / 2.0; - *lambda2 = (a + d - rad) / 2.0; -} diff --git a/xrtraps.c b/xrtraps.c deleted file mode 100644 index 6faa33f70..000000000 --- a/xrtraps.c +++ /dev/null @@ -1,589 +0,0 @@ -/* - * $XFree86: $ - * - * Copyright © 2002 Keith Packard, member of The XFree86 Project, Inc. - * - * Permission to use, copy, modify, distribute, and sell this software and its - * documentation for any purpose is hereby granted without fee, provided that - * the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation, and that the name of Keith Packard not be used in - * advertising or publicity pertaining to distribution of the software without - * specific, written prior permission. Keith Packard makes no - * representations about the suitability of this software for any purpose. It - * is provided "as is" without express or implied warranty. - * - * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, - * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO - * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR - * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, - * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER - * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR - * PERFORMANCE OF THIS SOFTWARE. - * - * 2002-07-15: Converted from XRenderCompositeDoublePoly to XrTrap. Carl D. Worth - */ - -#include "xrint.h" - -#define XR_TRAPS_GROWTH_INC 10 - -/* private functions */ - -static XrStatus -_XrTrapsGrowBy(XrTraps *traps, int additional); - -XrStatus -_XrTrapsAddTrap(XrTraps *traps, XFixed top, XFixed bottom, - XLineFixed left, XLineFixed right); - -XrStatus -_XrTrapsAddTrapFromPoints(XrTraps *traps, XFixed top, XFixed bottom, - XPointFixed left_p1, XPointFixed left_p2, - XPointFixed right_p1, XPointFixed right_p2); - -static int -_ComparePointFixedByY (const void *av, const void *bv); - -static int -_CompareXrEdgeByTop (const void *av, const void *bv); - -static XFixed -_ComputeX (XLineFixed *line, XFixed y); - -static double -_ComputeInverseSlope (XLineFixed *l); - -static double -_ComputeXIntercept (XLineFixed *l, double inverse_slope); - -static XFixed -_LinesIntersect (XLineFixed *l1, XLineFixed *l2, XFixed *intersection); - -void -_XrTrapsInit(XrTraps *traps) -{ - traps->num_xtraps = 0; - - traps->xtraps_size = 0; - traps->xtraps = NULL; -} - -void -_XrTrapsDeinit(XrTraps *traps) -{ - if (traps->xtraps_size) { - free(traps->xtraps); - traps->xtraps = NULL; - traps->xtraps_size = 0; - traps->num_xtraps = 0; - } -} - -XrStatus -_XrTrapsAddTrap(XrTraps *traps, XFixed top, XFixed bottom, - XLineFixed left, XLineFixed right) -{ - XrStatus status; - XTrapezoid *trap; - - if (top == bottom) { - return XrStatusSuccess; - } - - if (traps->num_xtraps >= traps->xtraps_size) { - status = _XrTrapsGrowBy(traps, XR_TRAPS_GROWTH_INC); - if (status) - return status; - } - - trap = &traps->xtraps[traps->num_xtraps]; - trap->top = top; - trap->bottom = bottom; - trap->left = left; - trap->right = right; - - traps->num_xtraps++; - - return XrStatusSuccess; -} - -XrStatus -_XrTrapsAddTrapFromPoints(XrTraps *traps, XFixed top, XFixed bottom, - XPointFixed left_p1, XPointFixed left_p2, - XPointFixed right_p1, XPointFixed right_p2) -{ - XLineFixed left; - XLineFixed right; - - left.p1 = left_p1; - left.p2 = left_p2; - - right.p1 = right_p1; - right.p2 = right_p2; - - return _XrTrapsAddTrap(traps, top, bottom, left, right); -} - -static XrStatus -_XrTrapsGrowBy(XrTraps *traps, int additional) -{ - XTrapezoid *new_xtraps; - int old_size = traps->xtraps_size; - int new_size = traps->num_xtraps + additional; - - if (new_size <= traps->xtraps_size) { - return XrStatusSuccess; - } - - traps->xtraps_size = new_size; - new_xtraps = realloc(traps->xtraps, traps->xtraps_size * sizeof(XTrapezoid)); - - if (new_xtraps == NULL) { - traps->xtraps_size = old_size; - return XrStatusNoMemory; - } - - traps->xtraps = new_xtraps; - - return XrStatusSuccess; -} - -static int -_ComparePointFixedByY (const void *av, const void *bv) -{ - const XPointFixed *a = av, *b = bv; - - int ret = a->y - b->y; - if (ret == 0) { - ret = a->x - b->x; - } - return ret; -} - -XrStatus -_XrTrapsTessellateTriangle (XrTraps *traps, XPointFixed t[3]) -{ - XrStatus status; - XLineFixed line; - double intersect; - XPointFixed tsort[3]; - - memcpy(tsort, t, 3 * sizeof(XPointFixed)); - qsort(tsort, 3, sizeof(XPointFixed), _ComparePointFixedByY); - - /* horizontal top edge requires special handling */ - if (tsort[0].y == tsort[1].y) { - if (tsort[0].x < tsort[1].x) - status = _XrTrapsAddTrapFromPoints (traps, - tsort[1].y, tsort[2].y, - tsort[0], tsort[2], - tsort[1], tsort[2]); - else - status = _XrTrapsAddTrapFromPoints (traps, - tsort[1].y, tsort[2].y, - tsort[1], tsort[2], - tsort[0], tsort[2]); - return status; - } - - line.p1 = tsort[0]; - line.p2 = tsort[1]; - - intersect = _ComputeX (&line, tsort[2].y); - - if (intersect < tsort[2].x) { - status = _XrTrapsAddTrapFromPoints(traps, - tsort[0].y, tsort[1].y, - tsort[0], tsort[1], - tsort[0], tsort[2]); - if (status) - return status; - status = _XrTrapsAddTrapFromPoints(traps, - tsort[1].y, tsort[2].y, - tsort[1], tsort[2], - tsort[0], tsort[2]); - if (status) - return status; - } else { - status = _XrTrapsAddTrapFromPoints(traps, - tsort[0].y, tsort[1].y, - tsort[0], tsort[2], - tsort[0], tsort[1]); - if (status) - return status; - status = _XrTrapsAddTrapFromPoints(traps, - tsort[1].y, tsort[2].y, - tsort[0], tsort[2], - tsort[1], tsort[2]); - if (status) - return status; - } - - return XrStatusSuccess; -} - -/* Warning: This function reorderd the elements of the array provided. */ -XrStatus -_XrTrapsTessellateRectangle (XrTraps *traps, XPointFixed q[4]) -{ - XrStatus status; - - qsort(q, 4, sizeof(XPointFixed), _ComparePointFixedByY); - - if (q[1].x > q[2].x) { - status = _XrTrapsAddTrapFromPoints(traps, q[0].y, q[1].y, q[0], q[2], q[0], q[1]); - if (status) - return status; - status = _XrTrapsAddTrapFromPoints(traps, q[1].y, q[2].y, q[0], q[2], q[1], q[3]); - if (status) - return status; - status = _XrTrapsAddTrapFromPoints(traps, q[2].y, q[3].y, q[2], q[3], q[1], q[3]); - if (status) - return status; - } else { - status = _XrTrapsAddTrapFromPoints(traps, q[0].y, q[1].y, q[0], q[1], q[0], q[2]); - if (status) - return status; - status = _XrTrapsAddTrapFromPoints(traps, q[1].y, q[2].y, q[1], q[3], q[0], q[2]); - if (status) - return status; - status = _XrTrapsAddTrapFromPoints(traps, q[2].y, q[3].y, q[1], q[3], q[2], q[3]); - if (status) - return status; - } - - return XrStatusSuccess; -} - -static int -_CompareXrEdgeByTop (const void *av, const void *bv) -{ - const XrEdge *a = av, *b = bv; - int ret; - - ret = a->edge.p1.y - b->edge.p1.y; - if (ret == 0) - ret = a->edge.p1.x - b->edge.p1.x; - return ret; -} - -/* Return value is: - > 0 if a is "clockwise" from b, (in a mathematical, not a graphical sense) - == 0 if slope(a) == slope(b) - < 0 if a is "counter-clockwise" from b -*/ -static int -_CompareXrEdgeBySlope (const void *av, const void *bv) -{ - const XrEdge *a = av, *b = bv; - - double a_dx = XFixedToDouble(a->edge.p2.x - a->edge.p1.x); - double a_dy = XFixedToDouble(a->edge.p2.y - a->edge.p1.y); - double b_dx = XFixedToDouble(b->edge.p2.x - b->edge.p1.x); - double b_dy = XFixedToDouble(b->edge.p2.y - b->edge.p1.y); - - return b_dy * a_dx - a_dy * b_dx; -} - -static int -_CompareXrEdgeByCurrentXThenSlope (const void *av, const void *bv) -{ - const XrEdge *a = av, *b = bv; - int ret; - - ret = a->current_x - b->current_x; - if (ret == 0) - ret = _CompareXrEdgeBySlope(a, b); - return ret; -} - -/* XXX: Both _ComputeX and _ComputeInverseSlope will divide by zero - for horizontal lines. Now, we "know" that when we are tessellating - polygons that the polygon data structure discards all horizontal - edges, but there's nothing here to guarantee that. I suggest the - following: - - A) Move all of the polygon tessellation code out of xrtraps.c and - into xrpoly.c, (in order to be in the same module as the code - discarding horizontal lines). - - OR - - B) Re-implement the line intersection in a way that avoids all - division by zero. Here's one approach. The only disadvantage - might be that that there are not meaningful names for all of the - sub-computations -- just a bunch of determinants. I haven't - looked at complexity, (both are probably similar and it probably - doesn't matter much anyway). - -static double -_det (double a, double b, double c, double d) -{ - return a * d - b * c; -} - -static int -_LinesIntersect (XLineFixed *l1, XLineFixed *l2, XFixed *y_intersection) -{ - double dx1 = XFixedToDouble(l1->p1.x - l1->p2.x); - double dy1 = XFixedToDouble(l1->p1.y - l1->p2.y); - - double dx2 = XFixedToDouble(l2->p1.x - l2->p2.x); - double dy2 = XFixedToDouble(l2->p1.y - l2->p2.y); - - double l1_det, l2_det; - - double den_det = _det(dx1, dy1, dx2, dy2); - - if (den_det == 0) - return 0; - - l1_det = _det(l1->p1.x, l1->p1.y, - l1->p2.x, l1->p2.y); - l2_det = _det(l2->p1.x, l2->p1.y, - l2->p2.x, l2->p2.y); - - *y_intersection = _det(l1_det, dy1, - l2_det, dy2) / den_det; - - return 1; -} -*/ -static XFixed -_ComputeX (XLineFixed *line, XFixed y) -{ - XFixed dx = line->p2.x - line->p1.x; - double ex = (double) (y - line->p1.y) * (double) dx; - XFixed dy = line->p2.y - line->p1.y; - - return line->p1.x + (ex / dy); -} - -static double -_ComputeInverseSlope (XLineFixed *l) -{ - return (XFixedToDouble (l->p2.x - l->p1.x) / - XFixedToDouble (l->p2.y - l->p1.y)); -} - -static double -_ComputeXIntercept (XLineFixed *l, double inverse_slope) -{ - return XFixedToDouble (l->p1.x) - inverse_slope * XFixedToDouble (l->p1.y); -} - -static int -_LinesIntersect (XLineFixed *l1, XLineFixed *l2, XFixed *y_intersection) -{ - /* - * x = m1y + b1 - * x = m2y + b2 - * m1y + b1 = m2y + b2 - * y * (m1 - m2) = b2 - b1 - * y = (b2 - b1) / (m1 - m2) - */ - double m1 = _ComputeInverseSlope (l1); - double b1 = _ComputeXIntercept (l1, m1); - double m2 = _ComputeInverseSlope (l2); - double b2 = _ComputeXIntercept (l2, m2); - - if (m1 == m2) - return 0; - - *y_intersection = XDoubleToFixed ((b2 - b1) / (m1 - m2)); - return 1; -} - -static void -_SortEdgeList(XrEdge **active) -{ - XrEdge *e, *en, *next; - - /* sort active list */ - for (e = *active; e; e = next) - { - next = e->next; - /* - * Find one later in the list that belongs before the - * current one - */ - for (en = next; en; en = en->next) - { - if (_CompareXrEdgeByCurrentXThenSlope(e, en) > 0) - { - /* - * insert en before e - * - * extract en - */ - en->prev->next = en->next; - if (en->next) - en->next->prev = en->prev; - /* - * insert en - */ - if (e->prev) - e->prev->next = en; - else - *active = en; - en->prev = e->prev; - e->prev = en; - en->next = e; - /* - * start over at en - */ - next = en; - break; - } - } - } -} - -/* The algorithm here is pretty simple: - - inactive = [edges] - y = min_p1_y(inactive) - - while (num_active || num_inactive) { - active = all edges containing y - - next_y = min( min_p2_y(active), min_p1_y(inactive), min_intersection(active) ) - - fill_traps(active, y, next_y, fill_rule) - - y = next_y - } - - The invariants that hold during fill_traps are: - - All edges in active contain both y and next_y - No edges in active intersect within y and next_y - - These invariants mean that fill_traps is as simple as sorting the - active edges, forming a trapezoid between each adjacent pair. Then, - either the even-odd or winding rule is used to determine whether to - emit each of these trapezoids. - - Warning: This function reorders the edges of the polygon provided. -*/ -XrStatus -_XrTrapsTessellatePolygon (XrTraps *traps, - XrPolygon *poly, - XrFillRule fill_rule) -{ - XrStatus status; - int inactive; - XrEdge *active; - XrEdge *e, *en, *next; - XFixed y, next_y, intersect; - int in_out, num_edges = poly->num_edges; - XrEdge *edges = poly->edges; - - if (num_edges == 0) - return XrStatusSuccess; - - qsort (edges, num_edges, sizeof (XrEdge), _CompareXrEdgeByTop); - - y = edges[0].edge.p1.y; - active = 0; - inactive = 0; - while (active || inactive < num_edges) - { - for (e = active; e; e = e->next) { - e->current_x = _ComputeX (&e->edge, y); - } - - /* insert new active edges into list */ - while (inactive < num_edges) - { - e = &edges[inactive]; - if (e->edge.p1.y > y) - break; - /* move this edge into the active list */ - inactive++; - e->current_x = _ComputeX (&e->edge, y); - - /* insert e at head of list */ - e->next = active; - e->prev = NULL; - if (active) - active->prev = e; - active = e; - } - - _SortEdgeList(&active); - - /* find next inflection point */ - if (active) - next_y = active->edge.p2.y; - else - next_y = edges[inactive].edge.p1.y; - for (e = active; e; e = en) - { - en = e->next; - - if (e->edge.p2.y < next_y) - next_y = e->edge.p2.y; - /* check intersect */ - if (en && e->current_x != en->current_x) - { - if (_LinesIntersect (&e->edge, &en->edge, &intersect)) - if (intersect > y) { - /* Need to guarantee that we get all the way past - the intersection point so that the edges sort - properly next time through the loop. */ - if (_ComputeX(&e->edge, intersect) < _ComputeX(&en->edge, intersect)) - intersect++; - if (intersect < next_y) - next_y = intersect; - } - } - } - /* check next inactive point */ - if (inactive < num_edges && edges[inactive].edge.p1.y < next_y) - next_y = edges[inactive].edge.p1.y; - - /* walk the list generating trapezoids */ - in_out = 0; - for (e = active; e && (en = e->next); e = e->next) - { - if (fill_rule == XrFillRuleWinding) { - if (e->clockWise) { - in_out++; - } else { - in_out--; - } - if (in_out == 0) { - continue; - } - } else { - in_out++; - if (in_out % 2 == 0) { - continue; - } - } - status = _XrTrapsAddTrap(traps, y, next_y, e->edge, en->edge); - if (status) - return status; - } - - /* delete inactive edges from list */ - for (e = active; e; e = next) - { - next = e->next; - if (e->edge.p2.y <= next_y) - { - if (e->prev) - e->prev->next = e->next; - else - active = e->next; - if (e->next) - e->next->prev = e->prev; - } - } - - y = next_y; - } - return XrStatusSuccess; -} |