forked from AuroraMiddleware/gtk
7002f08cc1
* Remove DC refcounting (we trust GDK to always do begin_frame/end_frame calls in pairs) * Now that there's no GDK-provided double-buffer up the stack, double-buffering is implemented here (though it's disabled by default - in my tests it didn't provide any visual improvements, but did decrease performance). * For some reason delaying window resizes until the point where we need to blit the double-buffer into the window leads to visual glitches, so doulbe-buffered windows are resized in begin_frame, same as non-double-buffered ones. * New code to clear the paint region, for all drawing modes. Hopefully, it isn't duplicated anywhere up the stack. * GL has its own context now, so remove any GL-related comments. * Layered windows are still used (because cairo actually works better with them) * A bit more code re-use for layered windows * Some functions that were local to gdksurface-win32.c are made usable for the whole backend * Drag-indicator drawing is temporarily commented out to match a similar change in X11 backend
80 lines
2.9 KiB
C
80 lines
2.9 KiB
C
/* GDK - The GIMP Drawing Kit
|
|
*
|
|
* Copyright © 2018 Benjamin Otte
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library 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
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef __GDK_WIN32_CAIRO_CONTEXT__
|
|
#define __GDK_WIN32_CAIRO_CONTEXT__
|
|
|
|
#include "gdkconfig.h"
|
|
|
|
#include "gdkcairocontextprivate.h"
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GDK_TYPE_WIN32_CAIRO_CONTEXT (gdk_win32_cairo_context_get_type ())
|
|
#define GDK_WIN32_CAIRO_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GDK_TYPE_WIN32_CAIRO_CONTEXT, GdkWin32CairoContext))
|
|
#define GDK_IS_WIN32_CAIRO_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GDK_TYPE_WIN32_CAIRO_CONTEXT))
|
|
#define GDK_WIN32_CAIRO_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_WIN32_CAIRO_CONTEXT, GdkWin32CairoContextClass))
|
|
#define GDK_IS_WIN32_CAIRO_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_WIN32_CAIRO_CONTEXT))
|
|
#define GDK_WIN32_CAIRO_CONTEXT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_WIN32_CAIRO_CONTEXT, GdkWin32CairoContextClass))
|
|
|
|
typedef struct _GdkWin32CairoContext GdkWin32CairoContext;
|
|
typedef struct _GdkWin32CairoContextClass GdkWin32CairoContextClass;
|
|
|
|
struct _GdkWin32CairoContext
|
|
{
|
|
GdkCairoContext parent_instance;
|
|
|
|
/* Set to TRUE when double-buffering is used.
|
|
* Layered windows use their own, custom double-buffering
|
|
* code that is unaffected by this flag.
|
|
*/
|
|
guint double_buffered : 1;
|
|
/* Re-set to the same value as GdkSurfaceImplWin32->layered
|
|
* every frame (since layeredness can change at runtime).
|
|
*/
|
|
guint layered : 1;
|
|
|
|
/* The a surface for double-buffering. We keep it
|
|
* around between repaints, and only re-allocate it
|
|
* if it's too small. */
|
|
cairo_surface_t *db_surface;
|
|
gint db_width;
|
|
gint db_height;
|
|
|
|
/* Surface for the window DC (in non-layered mode).
|
|
* A reference of the cache surface (in layered mode). */
|
|
cairo_surface_t *window_surface;
|
|
/* A reference to db_surface (when double-buffering).
|
|
* When not using double-buffering or in layered mode
|
|
* this is a reference to window_surface.
|
|
*/
|
|
cairo_surface_t *paint_surface;
|
|
};
|
|
|
|
struct _GdkWin32CairoContextClass
|
|
{
|
|
GdkCairoContextClass parent_class;
|
|
};
|
|
|
|
GDK_AVAILABLE_IN_ALL
|
|
GType gdk_win32_cairo_context_get_type (void) G_GNUC_CONST;
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GDK_WIN32_CAIRO_CONTEXT__ */
|