Commit 2fc80e61 authored by Benjamin Otte's avatar Benjamin Otte

gdk: Create paint surfaces of the same content as the window

Previously, we failed to create RGBA double buffers for RGBA windows.
parent c64946c5
......@@ -2647,6 +2647,20 @@ gdk_window_get_state (GdkWindow *window)
return private->state;
}
static cairo_content_t
gdk_window_get_content (GdkWindow *window)
{
cairo_surface_t *surface;
cairo_content_t content;
g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
surface = _gdk_drawable_ref_cairo_surface (window);
content = cairo_surface_get_content (surface);
cairo_surface_destroy (surface);
return content;
}
/* This creates an empty "implicit" paint region for the impl window.
* By itself this does nothing, but real paints to this window
......@@ -2693,7 +2707,7 @@ gdk_window_begin_implicit_paint (GdkWindow *window, GdkRectangle *rect)
paint->uses_implicit = FALSE;
paint->flushed = FALSE;
paint->surface = gdk_window_create_similar_surface (window,
CAIRO_CONTENT_COLOR,
gdk_window_get_content (window),
MAX (rect->width, 1),
MAX (rect->height, 1));
cairo_surface_set_device_offset (paint->surface, -rect->x, -rect->y);
......@@ -2917,7 +2931,7 @@ gdk_window_begin_paint_region (GdkWindow *window,
{
paint->uses_implicit = FALSE;
paint->surface = gdk_window_create_similar_surface (window,
CAIRO_CONTENT_COLOR,
gdk_window_get_content (window),
MAX (clip_box.width, 1),
MAX (clip_box.height, 1));
}
......
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