forked from AuroraMiddleware/gtk
fc569f1ac6
Existing code drawing on a GDK window has to handle the direct drawing and the buffered drawing by itself, by checking the window type and whether or not the window is backed by a native windowing surface. After that, the calling code has to create a Cairo context from the window and keep an association between the context and the window itself. This is completely unnecessary: GDK can determine whether or not it should use a backing store to draw on a GdkWindow as well as create a Cairo context, and keep track of it. This allows to simplify the calling code, and enforce some of the drawing behavior we want to guarantee to users. https://bugzilla.gnome.org/show_bug.cgi?id=766675
90 lines
3.7 KiB
C
90 lines
3.7 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 2005 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GDK_CAIRO_H__
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#define __GDK_CAIRO_H__
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#if !defined (__GDK_H_INSIDE__) && !defined (GDK_COMPILATION)
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#error "Only <gdk/gdk.h> can be included directly."
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#endif
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#include <gdk/gdkversionmacros.h>
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#include <gdk/deprecated/gdkcolor.h>
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#include <gdk/gdkrgba.h>
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#include <gdk/gdkpixbuf.h>
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#include <pango/pangocairo.h>
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G_BEGIN_DECLS
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GDK_AVAILABLE_IN_ALL
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cairo_t * gdk_cairo_create (GdkWindow *window);
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GDK_AVAILABLE_IN_3_22
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GdkWindow * gdk_cairo_get_window (cairo_t *cr);
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GDK_AVAILABLE_IN_ALL
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gboolean gdk_cairo_get_clip_rectangle (cairo_t *cr,
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GdkRectangle *rect);
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GDK_AVAILABLE_IN_ALL
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void gdk_cairo_set_source_rgba (cairo_t *cr,
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const GdkRGBA *rgba);
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GDK_AVAILABLE_IN_ALL
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void gdk_cairo_set_source_pixbuf (cairo_t *cr,
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const GdkPixbuf *pixbuf,
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gdouble pixbuf_x,
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gdouble pixbuf_y);
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GDK_AVAILABLE_IN_ALL
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void gdk_cairo_set_source_window (cairo_t *cr,
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GdkWindow *window,
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gdouble x,
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gdouble y);
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GDK_AVAILABLE_IN_ALL
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void gdk_cairo_rectangle (cairo_t *cr,
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const GdkRectangle *rectangle);
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GDK_AVAILABLE_IN_ALL
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void gdk_cairo_region (cairo_t *cr,
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const cairo_region_t *region);
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GDK_AVAILABLE_IN_ALL
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cairo_region_t *
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gdk_cairo_region_create_from_surface
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(cairo_surface_t *surface);
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GDK_DEPRECATED_IN_3_4_FOR(gdk_cairo_set_source_rgba)
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void gdk_cairo_set_source_color (cairo_t *cr,
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const GdkColor *color);
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GDK_AVAILABLE_IN_3_10
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cairo_surface_t * gdk_cairo_surface_create_from_pixbuf (const GdkPixbuf *pixbuf,
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int scale,
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GdkWindow *for_window);
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GDK_AVAILABLE_IN_3_16
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void gdk_cairo_draw_from_gl (cairo_t *cr,
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GdkWindow *window,
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int source,
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int source_type,
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int buffer_scale,
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int x,
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int y,
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int width,
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int height);
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G_END_DECLS
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#endif /* __GDK_CAIRO_H__ */
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