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/* GDK - The GIMP Drawing Kit
* Copyright (C) 2000 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <stdlib.h>
#include "gdkalias.h"
#include "gdkx.h"
#include "gdkdisplay-x11.h"
#include "gdkpango.h"
#include <pango/pangoxft.h>
#include <pango/pangoxft-render.h>
#include <math.h>
typedef struct _GdkX11Renderer GdkX11Renderer;
typedef struct _GdkX11RendererClass GdkX11RendererClass;
#define GDK_TYPE_X11_RENDERER (_gdk_x11_renderer_get_type())
#define GDK_X11_RENDERER(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_X11_RENDERER, GdkX11Renderer))
#define GDK_IS_X11_RENDERER(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_X11_RENDERER))
#define GDK_X11_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_X11_RENDERER, GdkX11RendererClass))
#define GDK_IS_X11_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_X11_RENDERER))
#define GDK_X11_RENDERER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_X11_RENDERER, GdkX11RendererClass))
#define MAX_RENDER_PART PANGO_RENDER_PART_STRIKETHROUGH
struct _GdkX11Renderer
{
PangoXftRenderer parent_instance;
XRenderPictFormat *mask_format;
GdkDrawable *drawable;
GdkGC *gc;
};
struct _GdkX11RendererClass
{
PangoXftRendererClass parent_class;
};
G_DEFINE_TYPE (GdkX11Renderer, _gdk_x11_renderer, PANGO_TYPE_XFT_RENDERER)
static void
gdk_x11_renderer_finalize (GObject *object)
{
G_OBJECT_CLASS (_gdk_x11_renderer_parent_class)->finalize (object);
}
static void
gdk_x11_renderer_composite_trapezoids (PangoXftRenderer *xftrenderer,
PangoRenderPart part,
XTrapezoid *trapezoids,
int n_trapezoids)
{
/* Because we only use this renderer for "draw_glyphs()" calls, we
* won't hit this code path much. However, it is hit for drawing
* the "unknown glyph" hex squares. We can safely ignore the part,
*/
GdkX11Renderer *x11_renderer = GDK_X11_RENDERER (xftrenderer);
_gdk_x11_drawable_draw_xtrapezoids (x11_renderer->drawable,
x11_renderer->gc,
trapezoids, n_trapezoids);
}
static void
gdk_x11_renderer_composite_glyphs (PangoXftRenderer *xftrenderer,
XftFont *xft_font,
XftGlyphSpec *glyphs,
gint n_glyphs)
{
GdkX11Renderer *x11_renderer = GDK_X11_RENDERER (xftrenderer);
_gdk_x11_drawable_draw_xft_glyphs (x11_renderer->drawable,
x11_renderer->gc,
xft_font, glyphs, n_glyphs);
}
static void
_gdk_x11_renderer_init (GdkX11Renderer *renderer)
{
}
static void
_gdk_x11_renderer_class_init (GdkX11RendererClass *klass)
{
PangoXftRendererClass *xftrenderer_class = PANGO_XFT_RENDERER_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
xftrenderer_class->composite_glyphs = gdk_x11_renderer_composite_glyphs;
xftrenderer_class->composite_trapezoids = gdk_x11_renderer_composite_trapezoids;
object_class->finalize = gdk_x11_renderer_finalize;
}
PangoRenderer *
_gdk_x11_renderer_get (GdkDrawable *drawable,
GdkGC *gc)
{
GdkScreen *screen = GDK_DRAWABLE_IMPL_X11 (drawable)->screen;
GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
GdkX11Renderer *x11_renderer;
if (!screen_x11->renderer)
{
screen_x11->renderer = g_object_new (GDK_TYPE_X11_RENDERER,
"display", GDK_SCREEN_XDISPLAY (screen),
"screen", GDK_SCREEN_XNUMBER (screen),
NULL);
}
x11_renderer = GDK_X11_RENDERER (screen_x11->renderer);
x11_renderer->drawable = drawable;
x11_renderer->gc = gc;
return screen_x11->renderer;
}
/**
* gdk_pango_context_get_for_screen:
* @screen: the #GdkScreen for which the context is to be created.
*
* Creates a #PangoContext for @screen.
*
* The context must be freed when you're finished with it.
*
* When using GTK+, normally you should use gtk_widget_get_pango_context()
* instead of this function, to get the appropriate context for
* the widget you intend to render text onto.
*
* Return value: a new #PangoContext for @screen
*
* Since: 2.2
**/
PangoContext *
gdk_pango_context_get_for_screen (GdkScreen *screen)
{
PangoContext *context;
g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
if (screen->closed)
return NULL;
context = pango_xft_get_context (GDK_SCREEN_XDISPLAY (screen),
GDK_SCREEN_X11 (screen)->screen_num);
g_object_set_data (G_OBJECT (context), "gdk-pango-screen", screen);
return context;
}
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