delay taking screenshots of windows

1 files changed, 28 insertions, 0 deletions

diff --git a/libmdock/mdock-window.c b/libmdock/mdock-window.c
index 9a21cde..7690ce6 100644
--- a/libmdock/mdock-window.c
+++ b/libmdock/mdock-window.c
@@ -3,6 +3,8 @@
 
 #define MDOCK_WINDOW_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE((object), MDOCK_TYPE_WINDOW, MDockWindowPrivate))
 
+#define SCREENSHOT_DELAY 100
+
 struct _MDockWindowPrivate
 {
 	GtkTable *table;
@@ -10,6 +12,7 @@ struct _MDockWindowPrivate
 	GtkLabel *title;
 	GtkWidget *close_btn;
 	GtkImage *img;
+	guint screenshot_timeout;
 	gboolean preligth : 1;
 	gboolean selected : 1;
 };
@@ -43,6 +46,16 @@ static void update_state(MDockWindow *self)
 	}
 }
 
+static gboolean screenshot_delay_timeout(gpointer user_data)
+{
+	MDockWindow *self = MDOCK_WINDOW(user_data);
+	if (wnck_window_is_active(self->window)) {
+		mdock_window_update_screenshot(self);
+	}
+	self->priv->screenshot_timeout = 0;
+	return G_SOURCE_REMOVE;
+}
+
 static gboolean mdock_window_enter_notify(GtkWidget *widget, GdkEventCrossing *event)
 {
 	MDockWindow *self = MDOCK_WINDOW(widget);
@@ -136,6 +149,11 @@ static void mdock_window_constructed(GObject *object)
 
 static void mdock_window_dispose(GObject *object)
 {
+	MDockWindow *self = MDOCK_WINDOW(self);
+	if (self->priv->screenshot_timeout) {
+		g_source_remove(self->priv->screenshot_timeout);
+		self->priv->screenshot_timeout = 0;
+	}
 	G_OBJECT_CLASS(mdock_window_parent_class)->dispose(object);
 }
 
@@ -187,6 +205,16 @@ void mdock_window_update_screenshot(MDockWindow *self)
 	                          thumbnailer_get_thumbnail(self->window), NULL);
 }
 
+void mdock_window_schedule_screenshot(MDockWindow *self)
+{
+	g_return_if_fail(self->window);
+	if (!self->priv->screenshot_timeout) {
+		self->priv->screenshot_timeout = gtk_timeout_add(SCREENSHOT_DELAY,
+		                                                 screenshot_delay_timeout,
+		                                                 self);
+	}
+}
+
 MDockWindow *mdock_window_new(WnckWindow *window)
 {
 	return g_object_new(MDOCK_TYPE_WINDOW, "window", window, NULL);