Commit 08fbba45 authored by Jasper St. Pierre's avatar Jasper St. Pierre

gdk: Add opaque region setters

https://bugzilla.gnome.org/show_bug.cgi?id=706922
parent 64cf8b73
......@@ -10787,3 +10787,39 @@ gdk_window_get_scale_factor (GdkWindow *window)
return 1;
}
/**
* gdk_window_set_opaque_region:
* @window: a top-level or non-native #GdkWindow
* @region: a region
*
* For optimizization purposes, compositing window managers may
* like to not draw obscured regions of windows, or turn off blending
* during for these regions. With RGB windows with no transparency,
* this is just the shape of the window, but with ARGB32 windows, the
* compositor does not know what regions of the window are transparent
* or not.
*
* This function only works for toplevel windows.
*
* GTK+ will automatically update this property automatically if
* the @window background is opaque, as we know where the opaque regions
* are. If your window background is not opaque, please update this
* property in your #GtkWindow::style_updated handler.
*
* Since: 3.10
*/
void
gdk_window_set_opaque_region (GdkWindow *window,
cairo_region_t *region)
{
GdkWindowImplClass *impl_class;
g_return_if_fail (GDK_IS_WINDOW (window));
g_return_if_fail (!GDK_WINDOW_DESTROYED (window));
impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
if (impl_class->set_opaque_region)
return impl_class->set_opaque_region (window, region);
}
......@@ -1086,6 +1086,10 @@ gboolean gdk_window_get_support_multidevice (GdkWindow *window);
GDK_AVAILABLE_IN_3_8
GdkFrameClock* gdk_window_get_frame_clock (GdkWindow *window);
GDK_AVAILABLE_IN_3_10
void gdk_window_set_opaque_region (GdkWindow *window,
cairo_region_t *region);
G_END_DECLS
#endif /* __GDK_WINDOW_H__ */
......@@ -292,6 +292,9 @@ struct _GdkWindowImplClass
GdkAtom property);
gint (* get_scale_factor) (GdkWindow *window);
void (* set_opaque_region) (GdkWindow *window,
cairo_region_t *region);
};
/* Interface Functions */
......
......@@ -2020,6 +2020,46 @@ gdk_wayland_window_get_scale_factor (GdkWindow *window)
return impl->scale;
}
static struct wl_region *
wl_region_from_cairo_region (GdkWaylandDisplay *display,
cairo_region_t *region)
{
struct wl_region *wl_region;
int i, n_rects;
wl_region = wl_compositor_create_region (display->compositor);
if (wl_region == NULL)
return NULL;
n_rects = cairo_region_num_rectangles (region);
for (i = 0; i < n_rects; i++)
{
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (region, i, &rect);
wl_region_add (wl_region, rect.x, rect.y, rect.width, rect.height);
}
return wl_region;
}
static void
gdk_wayland_window_set_opaque_region (GdkWindow *window,
cairo_region_t *region)
{
GdkWindowImplWayland *impl = GDK_WINDOW_IMPL_WAYLAND (window->impl);
struct wl_region *wl_region;
if (GDK_WINDOW_DESTROYED (window))
return;
wl_region = wl_region_from_cairo_region (GDK_WAYLAND_DISPLAY (gdk_window_get_display (window)), region);
if (wl_region == NULL)
return;
wl_surface_set_opaque_region (impl->surface, wl_region);
wl_region_destroy (wl_region);
}
static void
_gdk_window_impl_wayland_class_init (GdkWindowImplWaylandClass *klass)
......@@ -2109,6 +2149,7 @@ _gdk_window_impl_wayland_class_init (GdkWindowImplWaylandClass *klass)
impl_class->change_property = gdk_wayland_window_change_property;
impl_class->delete_property = gdk_wayland_window_delete_property;
impl_class->get_scale_factor = gdk_wayland_window_get_scale_factor;
impl_class->set_opaque_region = gdk_wayland_window_set_opaque_region;
}
......
......@@ -5555,6 +5555,51 @@ gdk_x11_window_set_frame_sync_enabled (GdkWindow *window,
GDK_WINDOW_IMPL_X11 (window->impl)->frame_sync_enabled = FALSE;
}
static void
gdk_x11_window_set_opaque_region (GdkWindow *window,
cairo_region_t *region)
{
GdkDisplay *display;
int nitems;
gulong *data;
if (region != NULL)
{
int i, nrects;
nrects = cairo_region_num_rectangles (region);
nitems = nrects * 4;
data = g_new (gulong, nitems);
for (i = 0; i < nrects; i++)
{
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (region, i, &rect);
data[i+0] = rect.x;
data[i+1] = rect.y;
data[i+2] = rect.width;
data[i+3] = rect.height;
}
}
else
{
nitems = 0;
data = NULL;
}
display = gdk_window_get_display (window);
XChangeProperty (GDK_DISPLAY_XDISPLAY (display),
GDK_WINDOW_XID (window),
gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_OPAQUE_REGION"),
XA_CARDINAL, 32, PropModeReplace,
(guchar *) data, nitems);
if (data != NULL)
g_free (data);
}
static void
gdk_window_impl_x11_class_init (GdkWindowImplX11Class *klass)
{
......@@ -5643,4 +5688,5 @@ gdk_window_impl_x11_class_init (GdkWindowImplX11Class *klass)
impl_class->change_property = _gdk_x11_window_change_property;
impl_class->delete_property = _gdk_x11_window_delete_property;
impl_class->get_scale_factor = gdk_x11_window_get_scale_factor;
impl_class->set_opaque_region = gdk_x11_window_set_opaque_region;
}
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment