/* "Face" primitives. Copyright (C) 1993 Free Software Foundation. This file is part of GNU Emacs. GNU Emacs is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Emacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Emacs; see the file COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ /* This is derived from work by Lucid (some parts very loosely so). */ #include #include #include #include "lisp.h" #ifdef HAVE_X_WINDOWS #include "xterm.h" #include "buffer.h" #include "dispextern.h" #include "frame.h" #include "blockinput.h" #include "window.h" /* Compensate for bug in Xos.h on some systems, on which it requires time.h. On some such systems, Xos.h tries to redefine struct timeval and struct timezone if USG is #defined while it is #included. */ #ifdef XOS_NEEDS_TIME_H #include #undef USG #include #define USG #define __TIMEVAL__ #else #include #endif /* An explanation of the face data structures. */ /* ========================= Face Data Structures ========================= Let FACE-NAME be a symbol naming a face. Let FACE-VECTOR be (assq FACE-NAME (frame-face-alist FRAME)) FACE-VECTOR is either nil, or a vector of the form [face NAME ID FONT FOREGROUND BACKGROUND BACKGROUND-PIXMAP UNDERLINE-P] where face is the symbol `face', NAME is the symbol with which this vector is associated (a backpointer), ID is the face ID, an integer used internally by the C code to identify the face, FONT, FOREGROUND, and BACKGROUND are strings naming the fonts and colors to use with the face, BACKGROUND-PIXMAP is the name of an x bitmap filename, which we don't use right now, and UNDERLINE-P is non-nil if the face should be underlined. If any of these elements are nil, that parameter is considered unspecified; parameters from faces specified by lower-priority overlays or text properties, or the parameters of the frame itself, can show through. (lisp/faces.el maintains these lists.) (assq FACE-NAME global-face-data) returns a vector describing the global parameters for that face. Let PARAM-FACE be FRAME->display.x->param_faces[Faref (FACE-VECTOR, 2)]. PARAM_FACE is a struct face whose members are the Xlib analogues of the parameters in FACE-VECTOR. If an element of FACE-VECTOR is nil, then the corresponding member of PARAM_FACE is FACE_DEFAULT. These faces are called "parameter faces", because they're the ones lisp manipulates to control what gets displayed. Elements 0 and 1 of FRAME->display.x->param_faces are special - they describe the default and mode line faces. None of the faces in param_faces have GC's. (See src/dispextern.h for the definiton of struct face. lisp/faces.el maintains the isomorphism between face_alist and param_faces.) The functions compute_char_face and compute_glyph_face find and combine the parameter faces associated with overlays and text properties. The resulting faces are called "computed faces"; none of their members are FACE_DEFAULT; they are completely specified. They then call intern_compute_face to search FRAME->display.x->computed_faces for a matching face, add one if none is found, and return the index into FRAME->display.x->computed_faces. FRAME's glyph matrices use these indices to record the faces of the matrix characters, and the X display hooks consult compute_faces to decide how to display these characters. Elements 0 and 1 of computed_faces always describe the default and mode-line faces. Elements 0 and 1 of computed_faces have GC's; all the other faces in computed_faces do not. The global array face_vector contains faces with their GC's set. Given a computed_face, the function intern_face finds (or adds) an element of face_vector with equivalent parameters, and returns a pointer to that face, whose GC can then be used for display. Constraints: Symbols naming faces must have associations on all frames; for any FRAME, for all FACE-NAME, if (assq FACE-NAME (frame-face-alist FRAME)) is non-nil, it must be non-nil for all frames. Analogously, indices into param_faces must be valid on all frames; if param_faces[i] is a non-zero face pointer on one frame, then it must be filled in on all frames. Code assumes that face ID's can be used on any frame. Some subtleties: Why do we keep param_faces and computed_faces separate? computed_faces contains an element for every combination of facial parameters we have ever displayed. indices into param_faces have to be valid on all frames. If they were the same array, then that array would grow very large on all frames, because any facial combination displayed on any frame would need to be a valid entry on all frames. Since face_vector is just a cache --- there are no pointers into it from the rest of the code, and everyone accesses it through intern_face --- we could just free its GC's and throw the whole thing away without breaking anything. This gives us a simple way to garbage-collect old GC's nobody's using any more - we can just purge face_vector, and then let subsequent calls to intern_face refill it as needed. The function clear_face_vector performs this purge. We're often applying intern_face to faces in computed_faces - for example, we do this while sending GLYPHs from a struct frame_glyphs to X during redisplay. It would be nice to avoid searching all of face_vector every time we intern a frame's face. So, when intern_face finds a match for FACE in face_vector, it stores the index of the match in FACE's cached_index member, and checks there first next time. */ /* Definitions and declarations. */ /* A table of display faces. */ static struct face **face_vector; /* The length in use of the table. */ static int nfaces; /* The allocated length of the table. */ static int nfaces_allocated; /* The number of face-id's in use (same for all frames). */ int next_face_id; /* The number of the face to use to indicate the region. */ int region_face; /* This is what appears in a slot in a face to signify that the face does not specify that display aspect. */ #define FACE_DEFAULT (~0) Lisp_Object Qface, Qmouse_face; static void build_face ( /* FRAME_PTR, struct face * */ ); int face_name_id_number ( /* FRAME_PTR, Lisp_Object name */ ); struct face *intern_face ( /* FRAME_PTR, struct face * */ ); static int new_computed_face ( /* FRAME_PTR, struct face * */ ); static int intern_computed_face ( /* FRAME_PTR, struct face * */ ); static void ensure_face_ready ( /* FRAME_PTR, int id */ ); void recompute_basic_faces ( /* FRAME_PTR f */ ); /* Allocating, copying, and comparing struct faces. */ /* Allocate a new face */ static struct face * allocate_face () { struct face *result = (struct face *) xmalloc (sizeof (struct face)); bzero (result, sizeof (struct face)); result->font = (XFontStruct *) FACE_DEFAULT; result->foreground = FACE_DEFAULT; result->background = FACE_DEFAULT; result->stipple = FACE_DEFAULT; return result; } /* Make a new face that's a copy of an existing one. */ static struct face * copy_face (face) struct face *face; { struct face *result = allocate_face (); result->font = face->font; result->foreground = face->foreground; result->background = face->background; result->stipple = face->stipple; result->underline = face->underline; return result; } static int face_eql (face1, face2) struct face *face1, *face2; { return ( face1->font == face2->font && face1->foreground == face2->foreground && face1->background == face2->background && face1->stipple == face2->stipple && face1->underline == face2->underline); } /* Interning faces in the `face_vector' cache, and clearing that cache. */ /* Return the unique display face corresponding to the user-level face FACE. If there isn't one, make one, and find a slot in the face_vector to put it in. */ static struct face * get_cached_face (f, face) struct frame *f; struct face *face; { int i, empty = -1; struct face *result; /* Perhaps FACE->cached_index is valid; this could happen if FACE is in a frame's face list. */ if (face->cached_index >= 0 && face->cached_index < nfaces && face_eql (face_vector[face->cached_index], face)) return face_vector[face->cached_index]; /* Look for an existing display face that does the job. Also find an empty slot if any. */ for (i = 0; i < nfaces; i++) { if (face_eql (face_vector[i], face)) return face_vector[i]; if (face_vector[i] == 0) empty = i; } /* If no empty slots, make one. */ if (empty < 0 && nfaces == nfaces_allocated) { int newsize = nfaces + 20; face_vector = (struct face **) xrealloc (face_vector, newsize * sizeof (struct face *)); nfaces_allocated = newsize; } if (empty < 0) empty = nfaces++; /* Put a new display face in the empty slot. */ result = copy_face (face); face_vector[empty] = result; /* Make a graphics context for it. */ build_face (f, result); return result; } /* Given a computed face, return an equivalent display face (one which has a graphics context). */ struct face * intern_face (f, face) struct frame *f; struct face *face; { /* If it's equivalent to the default face, use that. */ if (face_eql (face, FRAME_DEFAULT_FACE (f))) { if (!FRAME_DEFAULT_FACE (f)->gc) build_face (f, FRAME_DEFAULT_FACE (f)); return FRAME_DEFAULT_FACE (f); } /* If it's equivalent to the mode line face, use that. */ if (face_eql (face, FRAME_MODE_LINE_FACE (f))) { if (!FRAME_MODE_LINE_FACE (f)->gc) build_face (f, FRAME_MODE_LINE_FACE (f)); return FRAME_MODE_LINE_FACE (f); } /* If it's not one of the frame's default faces, it shouldn't have a GC. */ if (face->gc) abort (); /* Get a specialized display face. */ return get_cached_face (f, face); } /* Clear out face_vector and start anew. This should be done from time to time just to avoid keeping too many graphics contexts in face_vector that are no longer needed. */ void clear_face_vector () { Lisp_Object rest; Display *dpy = x_current_display; int i; BLOCK_INPUT; /* Free the display faces in the face_vector. */ for (i = 0; i < nfaces; i++) { struct face *face = face_vector[i]; if (face->gc) XFreeGC (dpy, face->gc); xfree (face); } nfaces = 0; UNBLOCK_INPUT; } /* Allocating and freeing X resources for display faces. */ /* Make a graphics context for face FACE, which is on frame F, if that can be done. */ static void build_face (f, face) struct frame *f; struct face *face; { GC gc; XGCValues xgcv; unsigned long mask; BLOCK_INPUT; if (face->foreground != FACE_DEFAULT) xgcv.foreground = face->foreground; else xgcv.foreground = f->display.x->foreground_pixel; if (face->background != FACE_DEFAULT) xgcv.background = face->background; else xgcv.background = f->display.x->background_pixel; if (face->font && (int) face->font != FACE_DEFAULT) xgcv.font = face->font->fid; else xgcv.font = f->display.x->font->fid; xgcv.graphics_exposures = 0; mask = GCForeground | GCBackground | GCFont | GCGraphicsExposures; gc = XCreateGC (x_current_display, FRAME_X_WINDOW (f), mask, &xgcv); #if 0 if (face->stipple && face->stipple != FACE_DEFAULT) XSetStipple (x_current_display, gc, face->stipple); #endif face->gc = gc; UNBLOCK_INPUT; } /* Allocating, freeing, and duplicating fonts, colors, and pixmaps. */ static XFontStruct * load_font (f, name) struct frame *f; Lisp_Object name; { XFontStruct *font; if (NILP (name)) return (XFontStruct *) FACE_DEFAULT; CHECK_STRING (name, 0); BLOCK_INPUT; font = XLoadQueryFont (x_current_display, (char *) XSTRING (name)->data); UNBLOCK_INPUT; if (! font) Fsignal (Qerror, Fcons (build_string ("undefined font"), Fcons (name, Qnil))); return font; } static void unload_font (f, font) struct frame *f; XFontStruct *font; { if (!font || font == ((XFontStruct *) FACE_DEFAULT)) return; BLOCK_INPUT; XFreeFont (x_current_display, font); UNBLOCK_INPUT; } static unsigned long load_color (f, name) struct frame *f; Lisp_Object name; { Display *dpy = x_current_display; Colormap cmap; XColor color; int result; if (NILP (name)) return FACE_DEFAULT; cmap = DefaultColormapOfScreen (DefaultScreenOfDisplay (x_current_display)); CHECK_STRING (name, 0); BLOCK_INPUT; result = XParseColor (dpy, cmap, (char *) XSTRING (name)->data, &color); UNBLOCK_INPUT; if (! result) Fsignal (Qerror, Fcons (build_string ("undefined color"), Fcons (name, Qnil))); BLOCK_INPUT; result = XAllocColor (dpy, cmap, &color); UNBLOCK_INPUT; if (! result) Fsignal (Qerror, Fcons (build_string ("X server cannot allocate color"), Fcons (name, Qnil))); return (unsigned long) color.pixel; } static void unload_color (f, pixel) struct frame *f; unsigned long pixel; { /* Since faces get built by copying parameters from other faces, the allocation counts for the colors get all screwed up. I don't see any solution that will take less than 10 minutes, and it's better to have a color leak than a crash, so I'm just dyking this out. This isn't really a color leak, anyway - if we ask for it again, we'll get the same pixel. */ #if 0 Colormap cmap; Display *dpy = x_current_display; if (pixel == FACE_DEFAULT || pixel == BLACK_PIX_DEFAULT || pixel == WHITE_PIX_DEFAULT) return; cmap = DefaultColormapOfScreen (DefaultScreenOfDisplay (x_current_display)); BLOCK_INPUT; XFreeColors (dpy, cmap, &pixel, 1, 0); UNBLOCK_INPUT; #endif } /* Managing parameter face arrays for frames. */ void init_frame_faces (f) FRAME_PTR f; { ensure_face_ready (f, 0); ensure_face_ready (f, 1); FRAME_N_COMPUTED_FACES (f) = 0; FRAME_SIZE_COMPUTED_FACES (f) = 0; new_computed_face (f, FRAME_PARAM_FACES (f)[0]); new_computed_face (f, FRAME_PARAM_FACES (f)[1]); recompute_basic_faces (f); /* Find another X frame. */ { Lisp_Object tail, frame, result; result = Qnil; FOR_EACH_FRAME (tail, frame) if (FRAME_X_P (XFRAME (frame)) && XFRAME (frame) != f) { result = frame; break; } /* If we didn't find any X frames other than f, then we don't need any faces other than 0 and 1, so we're okay. Otherwise, make sure that all faces valid on the selected frame are also valid on this new frame. */ if (FRAMEP (result)) { int i; int n_faces = FRAME_N_PARAM_FACES (XFRAME (result)); struct face **faces = FRAME_PARAM_FACES (XFRAME (result)); for (i = 2; i < n_faces; i++) if (faces[i]) ensure_face_ready (f, i); } } } /* Called from Fdelete_frame. */ void free_frame_faces (f) struct frame *f; { Display *dpy = x_current_display; int i; BLOCK_INPUT; for (i = 0; i < FRAME_N_PARAM_FACES (f); i++) { struct face *face = FRAME_PARAM_FACES (f) [i]; if (face) { if (face->gc) XFreeGC (dpy, face->gc); unload_font (f, face->font); unload_color (f, face->foreground); unload_color (f, face->background); #if 0 unload_pixmap (f, face->stipple); #endif xfree (face); } } xfree (FRAME_PARAM_FACES (f)); FRAME_PARAM_FACES (f) = 0; FRAME_N_PARAM_FACES (f) = 0; /* All faces in FRAME_COMPUTED_FACES use resources copied from FRAME_PARAM_FACES; we can free them without fuss. */ xfree (FRAME_COMPUTED_FACES (f)); FRAME_COMPUTED_FACES (f) = 0; FRAME_N_COMPUTED_FACES (f) = 0; UNBLOCK_INPUT; } /* Interning faces in a frame's face array. */ static int new_computed_face (f, new_face) struct frame *f; struct face *new_face; { int i = FRAME_N_COMPUTED_FACES (f); if (i >= FRAME_SIZE_COMPUTED_FACES (f)) { int new_size = i + 32; FRAME_COMPUTED_FACES (f) = (struct face **) (FRAME_SIZE_COMPUTED_FACES (f) == 0 ? xmalloc (new_size * sizeof (struct face *)) : xrealloc (FRAME_COMPUTED_FACES (f), new_size * sizeof (struct face *))); FRAME_SIZE_COMPUTED_FACES (f) = new_size; } i = FRAME_N_COMPUTED_FACES (f)++; FRAME_COMPUTED_FACES (f)[i] = copy_face (new_face); return i; } /* Find a match for NEW_FACE in a FRAME's computed face array, and add it if we don't find one. */ static int intern_computed_face (f, new_face) struct frame *f; struct face *new_face; { int len = FRAME_N_COMPUTED_FACES (f); int i; /* Search for a computed face already on F equivalent to FACE. */ for (i = 0; i < len; i++) { if (! FRAME_COMPUTED_FACES (f)[i]) abort (); if (face_eql (new_face, FRAME_COMPUTED_FACES (f)[i])) return i; } /* We didn't find one; add a new one. */ return new_computed_face (f, new_face); } /* Make parameter face id ID valid on frame F. */ static void ensure_face_ready (f, id) struct frame *f; int id; { if (FRAME_N_PARAM_FACES (f) <= id) { int n = id + 10; int i; if (!FRAME_N_PARAM_FACES (f)) FRAME_PARAM_FACES (f) = (struct face **) xmalloc (sizeof (struct face *) * n); else FRAME_PARAM_FACES (f) = (struct face **) xrealloc (FRAME_PARAM_FACES (f), sizeof (struct face *) * n); bzero (FRAME_PARAM_FACES (f) + FRAME_N_PARAM_FACES (f), (n - FRAME_N_PARAM_FACES (f)) * sizeof (struct face *)); FRAME_N_PARAM_FACES (f) = n; } if (FRAME_PARAM_FACES (f) [id] == 0) FRAME_PARAM_FACES (f) [id] = allocate_face (); } /* Return non-zero if FONT1 and FONT2 have the same width. We do not check the height, because we can now deal with different heights. We assume that they're both character-cell fonts. */ int same_size_fonts (font1, font2) XFontStruct *font1, *font2; { XCharStruct *bounds1 = &font1->min_bounds; XCharStruct *bounds2 = &font2->min_bounds; return (bounds1->width == bounds2->width); } /* Update the line_height of frame F according to the biggest font in any face. Return nonzero if if line_height changes. */ int frame_update_line_height (f) FRAME_PTR f; { int i; int biggest = FONT_HEIGHT (f->display.x->font); for (i = 0; i < f->display.x->n_param_faces; i++) if (f->display.x->param_faces[i] != 0 && f->display.x->param_faces[i]->font != (XFontStruct *) FACE_DEFAULT) { int height = FONT_HEIGHT (f->display.x->param_faces[i]->font); if (height > biggest) biggest = height; } if (biggest == f->display.x->line_height) return 0; f->display.x->line_height = biggest; return 1; } /* Modify face TO by copying from FROM all properties which have nondefault settings. */ static void merge_faces (from, to) struct face *from, *to; { /* Only merge the font if it's the same width as the base font. Otherwise ignore it, since we can't handle it properly. */ if (from->font != (XFontStruct *) FACE_DEFAULT && same_size_fonts (from->font, to->font)) to->font = from->font; if (from->foreground != FACE_DEFAULT) to->foreground = from->foreground; if (from->background != FACE_DEFAULT) to->background = from->background; if (from->stipple != FACE_DEFAULT) to->stipple = from->stipple; if (from->underline) to->underline = from->underline; } /* Set up the basic set of facial parameters, based on the frame's data; all faces are deltas applied to this. */ static void compute_base_face (f, face) FRAME_PTR f; struct face *face; { struct x_display *d = f->display.x; face->gc = 0; face->foreground = d->foreground_pixel; face->background = d->background_pixel; face->font = d->font; face->stipple = 0; face->underline = 0; /* Avoid a face comparison by making this invalid. */ face->cached_index = -1; } /* Return the face ID to use to display a special glyph which selects FACE_CODE as the face ID, assuming that ordinarily the face would be CURRENT_FACE. F is the frame. */ int compute_glyph_face (f, face_code, current_face) struct frame *f; int face_code, current_face; { struct face face; face = *FRAME_COMPUTED_FACES (f)[current_face]; if (face_code >= 0 && face_code < FRAME_N_PARAM_FACES (f) && FRAME_PARAM_FACES (f) [face_code] != 0) merge_faces (FRAME_PARAM_FACES (f) [face_code], &face); return intern_computed_face (f, &face); } /* Return the face ID associated with a buffer position POS. Store into *ENDPTR the position at which a different face is needed. This does not take account of glyphs that specify their own face codes. F is the frame in use for display, and W is a window displaying the current buffer. REGION_BEG, REGION_END delimit the region, so it can be highlighted. LIMIT is a position not to scan beyond. That is to limit the time this function can take. If MOUSE is nonzero, use the character's mouse-face, not its face. */ int compute_char_face (f, w, pos, region_beg, region_end, endptr, limit, mouse) struct frame *f; struct window *w; int pos; int region_beg, region_end; int *endptr; int limit; int mouse; { struct face face; Lisp_Object prop, position; int i, j, noverlays; int facecode; Lisp_Object *overlay_vec; Lisp_Object frame; int endpos; Lisp_Object propname; /* W must display the current buffer. We could write this function to use the frame and buffer of W, but right now it doesn't. */ if (XBUFFER (w->buffer) != current_buffer) abort (); XSET (frame, Lisp_Frame, f); endpos = ZV; if (pos < region_beg && region_beg < endpos) endpos = region_beg; XFASTINT (position) = pos; if (mouse) propname = Qmouse_face; else propname = Qface; prop = Fget_text_property (position, propname, w->buffer); { Lisp_Object limit1, end; XFASTINT (limit1) = (limit < endpos ? limit : endpos); end = Fnext_single_property_change (position, propname, w->buffer, limit1); if (INTEGERP (end)) endpos = XINT (end); } { int next_overlay; int len; /* First try with room for 40 overlays. */ len = 40; overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); noverlays = overlays_at (pos, 0, &overlay_vec, &len, &next_overlay); /* If there are more than 40, make enough space for all, and try again. */ if (noverlays > len) { len = noverlays; overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); noverlays = overlays_at (pos, 0, &overlay_vec, &len, &next_overlay); } if (next_overlay < endpos) endpos = next_overlay; } *endptr = endpos; /* Optimize the default case. */ if (noverlays == 0 && NILP (prop) && !(pos >= region_beg && pos < region_end)) return 0; compute_base_face (f, &face); if (!NILP (prop)) { facecode = face_name_id_number (f, prop); if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) && FRAME_PARAM_FACES (f) [facecode] != 0) merge_faces (FRAME_PARAM_FACES (f) [facecode], &face); } noverlays = sort_overlays (overlay_vec, noverlays, w); /* Now merge the overlay data in that order. */ for (i = 0; i < noverlays; i++) { prop = Foverlay_get (overlay_vec[i], propname); if (!NILP (prop)) { Lisp_Object oend; int oendpos; facecode = face_name_id_number (f, prop); if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) && FRAME_PARAM_FACES (f) [facecode] != 0) merge_faces (FRAME_PARAM_FACES (f)[facecode], &face); oend = OVERLAY_END (overlay_vec[i]); oendpos = OVERLAY_POSITION (oend); if (oendpos < endpos) endpos = oendpos; } } if (pos >= region_beg && pos < region_end) { if (region_end < endpos) endpos = region_end; if (region_face >= 0 && region_face < next_face_id) merge_faces (FRAME_PARAM_FACES (f)[region_face], &face); } *endptr = endpos; return intern_computed_face (f, &face); } /* Recompute the GC's for the default and modeline faces. We call this after changing frame parameters on which those GC's depend. */ void recompute_basic_faces (f) FRAME_PTR f; { /* If the frame's faces haven't been initialized yet, don't worry about this stuff. */ if (FRAME_N_PARAM_FACES (f) < 2) return; BLOCK_INPUT; if (FRAME_DEFAULT_FACE (f)->gc) XFreeGC (x_current_display, FRAME_DEFAULT_FACE (f)->gc); if (FRAME_MODE_LINE_FACE (f)->gc) XFreeGC (x_current_display, FRAME_MODE_LINE_FACE (f)->gc); compute_base_face (f, FRAME_DEFAULT_FACE (f)); compute_base_face (f, FRAME_MODE_LINE_FACE (f)); merge_faces (FRAME_DEFAULT_PARAM_FACE (f), FRAME_DEFAULT_FACE (f)); merge_faces (FRAME_MODE_LINE_PARAM_FACE (f), FRAME_MODE_LINE_FACE (f)); build_face (f, FRAME_DEFAULT_FACE (f)); build_face (f, FRAME_MODE_LINE_FACE (f)); UNBLOCK_INPUT; } /* Lisp interface. */ DEFUN ("frame-face-alist", Fframe_face_alist, Sframe_face_alist, 1, 1, 0, "") (frame) Lisp_Object frame; { CHECK_FRAME (frame, 0); return XFRAME (frame)->face_alist; } DEFUN ("set-frame-face-alist", Fset_frame_face_alist, Sset_frame_face_alist, 2, 2, 0, "") (frame, value) Lisp_Object frame, value; { CHECK_FRAME (frame, 0); XFRAME (frame)->face_alist = value; return value; } DEFUN ("make-face-internal", Fmake_face_internal, Smake_face_internal, 1, 1, 0, "Create face number FACE-ID on all frames.") (face_id) Lisp_Object face_id; { Lisp_Object rest; int id = XINT (face_id); CHECK_NUMBER (face_id, 0); if (id < 0 || id >= next_face_id) error ("Face id out of range"); for (rest = Vframe_list; !NILP (rest); rest = XCONS (rest)->cdr) { struct frame *f = XFRAME (XCONS (rest)->car); if (FRAME_X_P (f)) ensure_face_ready (f, id); } return Qnil; } DEFUN ("set-face-attribute-internal", Fset_face_attribute_internal, Sset_face_attribute_internal, 4, 4, 0, "") (face_id, attr_name, attr_value, frame) Lisp_Object face_id, attr_name, attr_value, frame; { struct face *face; struct frame *f; int magic_p; int id; CHECK_FRAME (frame, 0); CHECK_NUMBER (face_id, 0); CHECK_SYMBOL (attr_name, 0); f = XFRAME (frame); id = XINT (face_id); if (id < 0 || id >= next_face_id) error ("Face id out of range"); if (! FRAME_X_P (f)) return; ensure_face_ready (f, id); face = FRAME_PARAM_FACES (f) [XFASTINT (face_id)]; if (EQ (attr_name, intern ("font"))) { XFontStruct *font = load_font (f, attr_value); if (face->font != f->display.x->font) unload_font (f, face->font); face->font = font; if (frame_update_line_height (f)) x_set_window_size (f, 0, f->width, f->height); } else if (EQ (attr_name, intern ("foreground"))) { unsigned long new_color = load_color (f, attr_value); unload_color (f, face->foreground); face->foreground = new_color; } else if (EQ (attr_name, intern ("background"))) { unsigned long new_color = load_color (f, attr_value); unload_color (f, face->background); face->background = new_color; } #if 0 else if (EQ (attr_name, intern ("background-pixmap"))) { unsigned int w, h, d; unsigned long new_pixmap = load_pixmap (f, attr_value, &w, &h, &d, 0); unload_pixmap (f, face->stipple); if (NILP (attr_value)) new_pixmap = 0; face->stipple = new_pixmap; face->pixmap_w = w; face->pixmap_h = h; /* face->pixmap_depth = d; */ } #endif /* 0 */ else if (EQ (attr_name, intern ("underline"))) { int new = !NILP (attr_value); face->underline = new; } else error ("unknown face attribute"); if (id == 0 || id == 1) recompute_basic_faces (f); /* If we're modifying either of the frame's display faces, that means that we're changing the parameters of a fixed face code; since the color/font/whatever is changed but the face ID hasn't, redisplay won't know to redraw the affected sections. Give it a kick. */ if (id == 0 || id == 1) SET_FRAME_GARBAGED (f); else /* Otherwise, it's enough to tell it to redisplay the text. */ windows_or_buffers_changed = 1; return Qnil; } DEFUN ("internal-next-face-id", Finternal_next_face_id, Sinternal_next_face_id, 0, 0, 0, "") () { return make_number (next_face_id++); } /* Return the face id for name NAME on frame FRAME. (It should be the same for all frames, but it's as easy to use the "right" frame to look it up as to use any other one.) */ int face_name_id_number (f, name) FRAME_PTR f; Lisp_Object name; { Lisp_Object tem; tem = Fcdr (assq_no_quit (name, f->face_alist)); if (NILP (tem)) return 0; CHECK_VECTOR (tem, 0); tem = XVECTOR (tem)->contents[2]; CHECK_NUMBER (tem, 0); return XINT (tem); } /* Emacs initialization. */ void syms_of_xfaces () { Qface = intern ("face"); staticpro (&Qface); Qmouse_face = intern ("mouse-face"); staticpro (&Qmouse_face); DEFVAR_INT ("region-face", ®ion_face, "Face number to use to highlight the region\n\ The region is highlighted with this face\n\ when Transient Mark mode is enabled and the mark is active."); defsubr (&Sframe_face_alist); defsubr (&Sset_frame_face_alist); defsubr (&Smake_face_internal); defsubr (&Sset_face_attribute_internal); defsubr (&Sinternal_next_face_id); } #endif /* HAVE_X_WINDOWS */