{
cairo_region_t *region;
cairo_surface_t *surface;
+ gboolean surface_needs_composite;
};
/* Global info */
-static void gdk_window_drop_cairo_surface (GdkWindow *private);
-
static void gdk_window_free_paint_stack (GdkWindow *window);
static void gdk_window_finalize (GObject *object);
_gdk_window_destroy (window, TRUE);
}
- gdk_window_drop_cairo_surface (window);
-
if (window->impl)
{
g_object_unref (window->impl);
FALSE);
}
}
-
- if (private->cairo_surface)
- {
- if (!gdk_window_has_impl (private) ||
- !GDK_WINDOW_IMPL_GET_CLASS (private->impl)->resize_cairo_surface (private,
- private->cairo_surface,
- private->width,
- private->height))
- {
- gdk_window_drop_cairo_surface (private);
- }
- }
}
/* Call this when private has changed in one or more of these ways:
if (is_parent_of (window, new_parent))
return;
- /* This might be wrong in the new parent, e.g. for non-native surfaces.
- To make sure we're ok, just wipe it. */
- gdk_window_drop_cairo_surface (window);
-
impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
old_parent = window->parent;
/* Need to create a native window */
- gdk_window_drop_cairo_surface (window);
-
screen = gdk_window_get_screen (window);
display = gdk_screen_get_display (screen);
parent = window->parent;
if (temp_window == window)
g_object_set_qdata (G_OBJECT (screen), quark_pointer_window, NULL);
-
switch (window->window_type)
{
case GDK_WINDOW_ROOT:
_gdk_window_clear_update_area (window);
- gdk_window_drop_cairo_surface (window);
-
impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
if (gdk_window_has_impl (window))
cairo_surface_get_device_scale (paint->surface, &sx, &sy);
#endif
cairo_surface_set_device_offset (paint->surface, -clip_box.x*sx, -clip_box.y*sy);
+
+ paint->surface_needs_composite = TRUE;
+ }
+ else
+ {
+ paint->surface = gdk_window_ref_impl_surface (window);
}
for (list = window->paint_stack; list != NULL; list = list->next)
paint->region);
}
+/* This returns either the current working surface on the paint stack
+ * or the actual impl surface of the window. This should not be used
+ * from very many places: be careful! */
+static cairo_surface_t *
+get_window_surface (GdkWindow *window)
+{
+ if (window->impl_window->paint_stack)
+ {
+ GdkWindowPaint *paint = window->impl_window->paint_stack->data;
+ return cairo_surface_reference (paint->surface);
+ }
+ else
+ {
+ return gdk_window_ref_impl_surface (window);
+ }
+}
+
/**
* gdk_window_end_paint:
* @window: a #GdkWindow
window->paint_stack = g_slist_delete_link (window->paint_stack,
window->paint_stack);
-
- if (paint->surface != NULL)
+ if (paint->surface_needs_composite)
{
+ cairo_surface_t *surface;
+
cairo_region_get_extents (paint->region, &clip_box);
full_clip = cairo_region_copy (window->clip_region);
cairo_region_intersect (full_clip, paint->region);
- cr = gdk_cairo_create (window);
+ surface = get_window_surface (window);
+ cr = cairo_create (surface);
+ cairo_surface_destroy (surface);
+
cairo_set_source_surface (cr, paint->surface, 0, 0);
gdk_cairo_region (cr, full_clip);
cairo_clip (cr);
cairo_destroy (cr);
cairo_region_destroy (full_clip);
-
- cairo_surface_destroy (paint->surface);
}
+ cairo_surface_destroy (paint->surface);
+
cairo_region_destroy (paint->region);
g_free (paint);
{
GdkWindowPaint *paint = tmp_list->data;
- if (tmp_list == window->paint_stack &&
- paint->surface != NULL)
+ if (tmp_list == window->paint_stack)
cairo_surface_destroy (paint->surface);
cairo_region_destroy (paint->region);
int x_offset = 0, y_offset = 0;
cairo_t *cr;
- if (GDK_WINDOW_DESTROYED (window) || paint->surface == NULL)
+ if (GDK_WINDOW_DESTROYED (window))
return;
cr = cairo_create (paint->surface);
cairo_region_destroy (clip);
}
-static void
-gdk_window_drop_cairo_surface (GdkWindow *window)
-{
- if (window->cairo_surface)
- {
- cairo_surface_finish (window->cairo_surface);
- cairo_surface_set_user_data (window->cairo_surface, &gdk_window_cairo_key,
- NULL, NULL);
- window->cairo_surface = NULL;
- }
-}
-
-static void
-gdk_window_cairo_surface_destroy (void *data)
-{
- GdkWindow *window = data;
-
- window->cairo_surface = NULL;
-}
-
-static cairo_surface_t *
-gdk_window_create_cairo_surface (GdkWindow *window,
- int width,
- int height)
-{
- cairo_surface_t *surface, *subsurface;
-
- surface = gdk_window_ref_impl_surface (window);
- if (gdk_window_has_impl (window))
- return surface;
-
- subsurface = cairo_surface_create_for_rectangle (surface,
- window->abs_x,
- window->abs_y,
- width,
- height);
- cairo_surface_destroy (surface);
- return subsurface;
-}
-
-
+/* This is used in places like gdk_cairo_set_source_window and
+ * other places to take "screenshots" of windows. Thus, we allow
+ * it to be used outside of a begin_paint / end_paint. */
cairo_surface_t *
_gdk_window_ref_cairo_surface (GdkWindow *window)
{
cairo_surface_t *surface;
- GdkWindowPaint *paint;
g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
- paint = NULL;
- if (window->impl_window->paint_stack)
- paint = window->impl_window->paint_stack->data;
-
- if (paint && paint->surface != NULL)
- {
- surface = cairo_surface_create_for_rectangle (paint->surface,
- window->abs_x,
- window->abs_y,
- window->width,
- window->height);
- }
- else
- {
- if (!window->cairo_surface)
- {
- window->cairo_surface = gdk_window_create_cairo_surface (window,
- window->width,
- window->height);
-
- if (window->cairo_surface)
- {
- cairo_surface_set_user_data (window->cairo_surface, &gdk_window_cairo_key,
- window, gdk_window_cairo_surface_destroy);
- }
- }
- else
- cairo_surface_reference (window->cairo_surface);
-
- surface = window->cairo_surface;
- }
+ surface = get_window_surface (window);
- return surface;
+ return cairo_surface_create_for_rectangle (surface,
+ window->abs_x,
+ window->abs_y,
+ window->width,
+ window->height);
}
/**
gdk_cairo_create (GdkWindow *window)
{
GdkWindowPaint *paint;
- cairo_surface_t *surface;
cairo_region_t *region;
cairo_t *cr;
g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
- surface = _gdk_window_ref_cairo_surface (window);
- cr = cairo_create (surface);
-
- if (window->impl_window->paint_stack)
+ if (window->impl_window->paint_stack == NULL)
{
- paint = window->impl_window->paint_stack->data;
+ cairo_surface_t *dummy_surface;
+ cairo_t *cr;
- region = cairo_region_copy (paint->region);
- cairo_region_translate (region, -window->abs_x, -window->abs_y);
- gdk_cairo_region (cr, region);
- cairo_region_destroy (region);
- }
- else
- gdk_cairo_region (cr, window->clip_region);
+ g_warning ("gdk_cairo_create called from outside a paint. Make sure to call "
+ "gdk_window_begin_paint_region before calling gdk_cairo_create!");
- cairo_clip (cr);
+ /* Return a dummy surface to keep apps from crashing. */
+ dummy_surface = cairo_image_surface_create (gdk_window_get_content (window), 0, 0);
+ cr = cairo_create (dummy_surface);
+ cairo_surface_destroy (dummy_surface);
+ return cr;
+ }
- cairo_surface_destroy (surface);
+ paint = window->impl_window->paint_stack->data;
+
+ cr = cairo_create (paint->surface);
+ region = cairo_region_copy (paint->region);
+ cairo_region_translate (region, -window->abs_x, -window->abs_y);
+ gdk_cairo_region (cr, region);
+ cairo_region_destroy (region);
+ cairo_clip (cr);
return cr;
}
projects / gtk4.git / commitdiff