static void
na_tray_manager_set_visual_property (NaTrayManager *manager)
{
#ifdef GDK_WINDOWING_X11
GdkWindow *window;
GdkDisplay *display;
Visual *xvisual;
Atom visual_atom;
gulong data[1];
if (!manager->invisible)
return;
window = gtk_widget_get_window (manager->invisible);
if (!window)
return;
/* The visual property is a hint to the tray icons as to what visual they
* should use for their windows. If the X server has RGBA colormaps, then
* we tell the tray icons to use a RGBA colormap and we'll composite the
* icon onto its parents with real transparency. Otherwise, we just tell
* the icon to use our colormap, and we'll do some hacks with parent
* relative backgrounds to simulate transparency.
*/
display = gtk_widget_get_display (manager->invisible);
visual_atom = gdk_x11_get_xatom_by_name_for_display (display,
"_NET_SYSTEM_TRAY_VISUAL");
if (gdk_screen_get_rgba_visual (manager->screen) != NULL &&
gdk_display_supports_composite (display))
{
xvisual = GDK_VISUAL_XVISUAL (gdk_screen_get_rgba_visual (manager->screen));
}
else
{
/* We actually want the visual of the tray where the icons will
* be embedded. In almost all cases, this will be the same as the visual
* of the screen.
*/
GdkColormap *colormap;
colormap = gdk_screen_get_default_colormap (manager->screen);
xvisual = GDK_VISUAL_XVISUAL (gdk_colormap_get_visual (colormap));
}
data[0] = XVisualIDFromVisual (xvisual);
XChangeProperty (GDK_DISPLAY_XDISPLAY (display),
GDK_WINDOW_XWINDOW (window),
visual_atom,
XA_VISUALID, 32,
PropModeReplace,
(guchar *) &data, 1);
#endif
}
GtkWidget *
na_tray_child_new (GdkScreen *screen,
Window icon_window)
{
XWindowAttributes window_attributes;
Display *xdisplay;
NaTrayChild *child;
GdkVisual *visual;
gboolean visual_has_alpha;
int red_prec, green_prec, blue_prec, depth;
int result;
g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
g_return_val_if_fail (icon_window != None, NULL);
xdisplay = GDK_SCREEN_XDISPLAY (screen);
/* We need to determine the visual of the window we are embedding and create
* the socket in the same visual.
*/
gdk_error_trap_push ();
result = XGetWindowAttributes (xdisplay, icon_window,
&window_attributes);
gdk_error_trap_pop_ignored ();
if (!result) /* Window already gone */
return NULL;
visual = gdk_x11_screen_lookup_visual (screen,
window_attributes.visual->visualid);
if (!visual) /* Icon window is on another screen? */
return NULL;
child = g_object_new (NA_TYPE_TRAY_CHILD, NULL);
child->icon_window = icon_window;
gtk_widget_set_visual (GTK_WIDGET (child), visual);
/* We have alpha if the visual has something other than red, green,
* and blue */
gdk_visual_get_red_pixel_details (visual, NULL, NULL, &red_prec);
gdk_visual_get_green_pixel_details (visual, NULL, NULL, &green_prec);
gdk_visual_get_blue_pixel_details (visual, NULL, NULL, &blue_prec);
depth = gdk_visual_get_depth (visual);
visual_has_alpha = red_prec + blue_prec + green_prec < depth;
child->has_alpha = (visual_has_alpha &&
gdk_display_supports_composite (gdk_screen_get_display (screen)));
child->composited = child->has_alpha;
return GTK_WIDGET (child);
}
static VALUE
rg_supports_composite_p(VALUE self)
{
return CBOOL2RVAL(gdk_display_supports_composite(_SELF(self)));
}
bool Ctrl::IsCompositedGui()
{
GuiLock __;
static bool b = gdk_display_supports_composite(gdk_display_get_default());
return b;
}
GtkWidget *
na_tray_child_new (GdkScreen *screen,
Window icon_window)
{
XWindowAttributes window_attributes;
Display *xdisplay;
NaTrayChild *child;
GdkVisual *visual;
gboolean visual_has_alpha;
GdkColormap *colormap;
gboolean new_colormap;
int result;
g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
g_return_val_if_fail (icon_window != None, NULL);
xdisplay = GDK_SCREEN_XDISPLAY (screen);
/* We need to determine the visual of the window we are embedding and create
* the socket in the same visual.
*/
gdk_error_trap_push ();
result = XGetWindowAttributes (xdisplay, icon_window,
&window_attributes);
gdk_error_trap_pop ();
if (!result) /* Window already gone */
return NULL;
visual = gdk_x11_screen_lookup_visual (screen,
window_attributes.visual->visualid);
if (!visual) /* Icon window is on another screen? */
return NULL;
new_colormap = FALSE;
if (visual == gdk_screen_get_rgb_visual (screen))
colormap = gdk_screen_get_rgb_colormap (screen);
else if (visual == gdk_screen_get_rgba_visual (screen))
colormap = gdk_screen_get_rgba_colormap (screen);
else if (visual == gdk_screen_get_system_visual (screen))
colormap = gdk_screen_get_system_colormap (screen);
else
{
colormap = gdk_colormap_new (visual, FALSE);
new_colormap = TRUE;
}
child = g_object_new (NA_TYPE_TRAY_CHILD, NULL);
child->icon_window = icon_window;
gtk_widget_set_colormap (GTK_WIDGET (child), colormap);
/* We have alpha if the visual has something other than red, green,
* and blue */
visual_has_alpha = visual->red_prec + visual->blue_prec + visual->green_prec < visual->depth;
child->has_alpha = (visual_has_alpha &&
gdk_display_supports_composite (gdk_screen_get_display (screen)));
child->composited = child->has_alpha;
if (new_colormap)
g_object_unref (colormap);
return GTK_WIDGET (child);
}
