/* The plug window should completely occupy the area of the child, so we won't
* get an expose event. But in case we do (the plug unmaps itself, say), this
* expose handler draws with real or fake transparency.
*/
static gboolean
na_tray_child_expose_event (GtkWidget *widget,
GdkEventExpose *event)
{
NaTrayChild *child = NA_TRAY_CHILD (widget);
GdkWindow *window = gtk_widget_get_window (widget);
if (na_tray_child_has_alpha (child))
{
/* Clear to transparent */
cairo_t *cr = gdk_cairo_create (window);
cairo_set_source_rgba (cr, 0, 0, 0, 0);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
gdk_cairo_region (cr, event->region);
cairo_fill (cr);
cairo_destroy (cr);
}
else if (child->parent_relative_bg)
{
/* Clear to parent-relative pixmap */
gdk_window_clear_area (window,
event->area.x, event->area.y,
event->area.width, event->area.height);
}
return FALSE;
}
static void
cinnamon_tray_manager_child_on_realize (GtkWidget *widget,
CinnamonTrayManagerChild *child)
{
/* If the tray child is using an RGBA colormap (and so we have real
* transparency), we don't need to worry about the background. If
* not, we obey the bg-color property by creating a cairo pattern of
* that color and setting it as our background. Then "parent-relative"
* background on the socket and the plug within that will cause
* the icons contents to appear on top of our background color.
*/
if (!na_tray_child_has_alpha (NA_TRAY_CHILD (child->socket)))
{
ClutterColor color = child->manager->priv->bg_color;
cairo_pattern_t *bg_pattern;
bg_pattern = cairo_pattern_create_rgb (color.red / 255.,
color.green / 255.,
color.blue / 255.);
gdk_window_set_background_pattern (gtk_widget_get_window (widget),
bg_pattern);
cairo_pattern_destroy (bg_pattern);
}
}
na_tray_child_expose_event (GtkWidget *widget,
GdkEventExpose *event)
#endif
{
NaTrayChild *child = NA_TRAY_CHILD (widget);
GdkWindow *window = gtk_widget_get_window (widget);
if (na_tray_child_has_alpha (child))
{
/* Clear to transparent */
#if !GTK_CHECK_VERSION (3, 0, 0)
cairo_t *cr = gdk_cairo_create (window);
#endif
cairo_set_source_rgba (cr, 0, 0, 0, 0);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
#if GTK_CHECK_VERSION (3, 0, 0)
cairo_paint (cr);
#else
gdk_cairo_region (cr, event->region);
cairo_fill (cr);
cairo_destroy (cr);
#endif
}
else if (child->parent_relative_bg)
{
/* Clear to parent-relative pixmap */
#if GTK_CHECK_VERSION (3, 0, 0)
GdkWindow *window;
cairo_surface_t *target;
GdkRectangle clip_rect;
window = gtk_widget_get_window (widget);
target = cairo_get_group_target (cr);
gdk_cairo_get_clip_rectangle (cr, &clip_rect);
/* Clear to parent-relative pixmap
* We need to use direct X access here because GDK doesn't know about
* the parent relative pixmap. */
cairo_surface_flush (target);
XClearArea (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window),
clip_rect.x, clip_rect.y,
clip_rect.width, clip_rect.height,
False);
cairo_surface_mark_dirty_rectangle (target,
clip_rect.x, clip_rect.y,
clip_rect.width, clip_rect.height);
#else
gdk_window_clear_area (window,
event->area.x, event->area.y,
event->area.width, event->area.height);
#endif
}
return FALSE;
}
static void
na_tray_child_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
NaTrayChild *child = NA_TRAY_CHILD (widget);
GtkAllocation widget_allocation;
gboolean moved, resized;
gtk_widget_get_allocation (widget, &widget_allocation);
moved = (allocation->x != widget_allocation.x ||
allocation->y != widget_allocation.y);
resized = (allocation->width != widget_allocation.width ||
allocation->height != widget_allocation.height);
/* When we are allocating the widget while mapped we need special handling
* for both real and fake transparency.
*
* Real transparency: we need to invalidate and trigger a redraw of the old
* and new areas. (GDK really should handle this for us, but doesn't as of
* GTK+-2.14)
*
* Fake transparency: if the widget moved, we need to force the contents to
* be redrawn with the new offset for the parent-relative background.
*/
if ((moved || resized) && gtk_widget_get_mapped (widget))
{
if (na_tray_child_has_alpha (child))
gdk_window_invalidate_rect (gdk_window_get_parent (gtk_widget_get_window (widget)),
&widget_allocation, FALSE);
}
GTK_WIDGET_CLASS (na_tray_child_parent_class)->size_allocate (widget,
allocation);
if ((moved || resized) && gtk_widget_get_mapped (widget))
{
if (na_tray_child_has_alpha (NA_TRAY_CHILD (widget)))
gdk_window_invalidate_rect (gdk_window_get_parent (gtk_widget_get_window (widget)),
&widget_allocation, FALSE);
else if (moved && child->parent_relative_bg)
na_tray_child_force_redraw (child);
}
}
static void
na_tray_child_realize (GtkWidget *widget)
{
NaTrayChild *child = NA_TRAY_CHILD (widget);
GdkVisual *visual = gtk_widget_get_visual (widget);
GdkWindow *window;
GTK_WIDGET_CLASS (na_tray_child_parent_class)->realize (widget);
window = gtk_widget_get_window (widget);
if (child->has_alpha)
{
/* We have real transparency with an ARGB visual and the Composite
* extension. */
/* Set a transparent background */
GdkColor transparent = { 0, 0, 0, 0 }; /* only pixel=0 matters */
gdk_window_set_background (window, &transparent);
gdk_window_set_composited (window, TRUE);
child->parent_relative_bg = FALSE;
}
#if GTK_CHECK_VERSION(3, 0, 0)
else if (visual == gdk_window_get_visual(gdk_window_get_parent(window)))
#else
else if (visual == gdk_drawable_get_visual(GDK_DRAWABLE(gdk_window_get_parent(window))))
#endif
{
/* Otherwise, if the visual matches the visual of the parent window, we
* can use a parent-relative background and fake transparency. */
gdk_window_set_back_pixmap (window, NULL, TRUE);
child->parent_relative_bg = TRUE;
}
else
{
/* Nothing to do; the icon will sit on top of an ugly gray box */
child->parent_relative_bg = FALSE;
}
gdk_window_set_composited (window, child->composited);
gtk_widget_set_app_paintable (GTK_WIDGET (child),
child->parent_relative_bg || child->has_alpha);
/* Double-buffering will interfere with the parent-relative-background fake
* transparency, since the double-buffer code doesn't know how to fill in the
* background of the double-buffer correctly.
*/
gtk_widget_set_double_buffered (GTK_WIDGET (child),
child->parent_relative_bg);
}
static gboolean
na_tray_manager_plug_removed (GtkSocket *socket,
NaTrayManager *manager)
{
NaTrayChild *child = NA_TRAY_CHILD (socket);
g_hash_table_remove (manager->socket_table,
GINT_TO_POINTER (child->icon_window));
g_signal_emit (manager, manager_signals[TRAY_ICON_REMOVED], 0, child);
/* This destroys the socket. */
return FALSE;
}
static void
na_tray_child_realize (GtkWidget *widget)
{
NaTrayChild *child = NA_TRAY_CHILD (widget);
GdkVisual *visual = gtk_widget_get_visual (widget);
GdkWindow *window;
GTK_WIDGET_CLASS (na_tray_child_parent_class)->realize (widget);
window = gtk_widget_get_window (widget);
if (child->has_alpha)
{
/* We have real transparency with an ARGB visual and the Composite
* extension. */
/* Set a transparent background */
cairo_pattern_t *transparent = cairo_pattern_create_rgba (0, 0, 0, 0);
gdk_window_set_background_pattern (window, transparent);
gdk_window_set_composited (window, TRUE);
cairo_pattern_destroy (transparent);
child->parent_relative_bg = FALSE;
}
else if (visual == gdk_window_get_visual (gdk_window_get_parent (window)))
{
/* Otherwise, if the visual matches the visual of the parent window, we
* can use a parent-relative background and fake transparency. */
gdk_window_set_background_pattern (window, NULL);
child->parent_relative_bg = TRUE;
}
else
{
/* Nothing to do; the icon will sit on top of an ugly gray box */
child->parent_relative_bg = FALSE;
}
gdk_window_set_composited (window, child->composited);
gtk_widget_set_app_paintable (GTK_WIDGET (child),
child->parent_relative_bg || child->has_alpha);
/* Double-buffering will interfere with the parent-relative-background fake
* transparency, since the double-buffer code doesn't know how to fill in the
* background of the double-buffer correctly.
*/
gtk_widget_set_double_buffered (GTK_WIDGET (child),
child->parent_relative_bg);
}
static void
cinnamon_tray_icon_constructed (GObject *object)
{
GdkWindow *icon_app_window;
CinnamonTrayIcon *icon = CINNAMON_TRAY_ICON (object);
CinnamonEmbeddedWindow *window;
GdkDisplay *display;
Window plug_xid;
Atom _NET_WM_PID, type;
int result, format;
gulong nitems, bytes_after, *val = NULL;
/* We do all this now rather than computing it on the fly later,
* because Cinnamon may want to see their values from a
* tray-icon-removed signal handler, at which point the plug has
* already been removed from the socket.
*/
g_object_get (object, "window", &window, NULL);
g_return_if_fail (window != NULL);
icon->priv->socket = NA_TRAY_CHILD (gtk_bin_get_child (GTK_BIN (window)));
g_object_unref (window);
icon->priv->title = na_tray_child_get_title (icon->priv->socket);
na_tray_child_get_wm_class (icon->priv->socket, NULL, &icon->priv->wm_class);
icon_app_window = gtk_socket_get_plug_window (GTK_SOCKET (icon->priv->socket));
if (icon_app_window == NULL)
{
g_warning ("cinnamon tray: icon app window is gone");
return;
}
plug_xid = GDK_WINDOW_XID (icon_app_window);
display = gtk_widget_get_display (GTK_WIDGET (icon->priv->socket));
gdk_error_trap_push ();
_NET_WM_PID = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_PID");
result = XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), plug_xid,
_NET_WM_PID, 0, G_MAXLONG, False, XA_CARDINAL,
&type, &format, &nitems,
&bytes_after, (guchar **)&val);
if (!gdk_error_trap_pop () &&
result == Success &&
type == XA_CARDINAL &&
nitems == 1)
icon->priv->pid = *val;
if (val)
XFree (val);
}
/* The plug window should completely occupy the area of the child, so we won't
* get a draw event. But in case we do (the plug unmaps itself, say), this
* draw handler draws with real or fake transparency.
*/
static gboolean
na_tray_child_draw (GtkWidget *widget,
cairo_t *cr)
{
NaTrayChild *child = NA_TRAY_CHILD (widget);
if (na_tray_child_has_alpha (child))
{
/* Clear to transparent */
cairo_set_source_rgba (cr, 0, 0, 0, 0);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
cairo_paint (cr);
}
else if (child->parent_relative_bg)
{
GdkWindow *window;
cairo_surface_t *target;
GdkRectangle clip_rect;
window = gtk_widget_get_window (widget);
target = cairo_get_group_target (cr);
gdk_cairo_get_clip_rectangle (cr, &clip_rect);
/* Clear to parent-relative pixmap
* We need to use direct X access here because GDK doesn't know about
* the parent relative pixmap. */
cairo_surface_flush (target);
XClearArea (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window),
clip_rect.x, clip_rect.y,
clip_rect.width, clip_rect.height,
False);
cairo_surface_mark_dirty_rectangle (target,
clip_rect.x, clip_rect.y,
clip_rect.width, clip_rect.height);
}
return FALSE;
}
static void
na_tray_icon_added (NaTrayManager *na_manager, GtkWidget *socket,
gpointer user_data)
{
CinnamonTrayManager *manager = user_data;
GtkWidget *win;
CinnamonTrayManagerChild *child;
/* We don't need the NaTrayIcon to be composited on the window we
* put it in: the window is the same size as the tray icon
* and transparent. We can just use the default X handling of
* subwindows as mode of SOURCE (replace the parent with the
* child) and then composite the parent onto the stage.
*/
na_tray_child_set_composited (NA_TRAY_CHILD (socket), FALSE);
win = cinnamon_embedded_window_new (manager->priv->stage);
gtk_container_add (GTK_CONTAINER (win), socket);
/* The visual of the socket matches that of its contents; make
* the window we put it in match that as well */
gtk_widget_set_visual (win, gtk_widget_get_visual (socket));
child = g_slice_new0 (CinnamonTrayManagerChild);
child->manager = manager;
child->window = win;
child->socket = socket;
g_signal_connect (win, "realize",
G_CALLBACK (cinnamon_tray_manager_child_on_realize), child);
gtk_widget_show_all (win);
g_hash_table_insert (manager->priv->icons, socket, child);
g_signal_connect (socket, "plug-added", G_CALLBACK (on_plug_added), manager);
}
