gtk: Add a way to queue redrawing the base GTK widget

This will be used to request a redraw of the GTK widget should the
display be changed using properties not directly handled by the base GTK
widget, but by one of its descendants.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1618>

diff --git a/subprojects/gst-plugins-good/ext/gtk/gtkgstbasewidget.c b/subprojects/gst-plugins-good/ext/gtk/gtkgstbasewidget.c
index db2c7b5..d3ba7e8 100644 (file)
--- a/subprojects/gst-plugins-good/ext/gtk/gtkgstbasewidget.c
+++ b/subprojects/gst-plugins-good/ext/gtk/gtkgstbasewidget.c
@@ -593,3 +593,19 @@ gtk_gst_base_widget_set_buffer (GtkGstBaseWidget * widget, GstBuffer * buffer)
 
   GTK_GST_BASE_WIDGET_UNLOCK (widget);
 }
+
+void
+gtk_gst_base_widget_queue_draw (GtkGstBaseWidget * widget)
+{
+  /* As we have no type, this is better then no check */
+  g_return_if_fail (GTK_IS_WIDGET (widget));
+
+  GTK_GST_BASE_WIDGET_LOCK (widget);
+
+  if (!widget->draw_id) {
+    widget->draw_id = g_idle_add_full (G_PRIORITY_DEFAULT,
+        (GSourceFunc) _queue_draw, widget, NULL);
+  }
+
+  GTK_GST_BASE_WIDGET_UNLOCK (widget);
+}

diff --git a/subprojects/gst-plugins-good/ext/gtk/gtkgstbasewidget.h b/subprojects/gst-plugins-good/ext/gtk/gtkgstbasewidget.h
index 6967560..cc957bf 100644 (file)
--- a/subprojects/gst-plugins-good/ext/gtk/gtkgstbasewidget.h
+++ b/subprojects/gst-plugins-good/ext/gtk/gtkgstbasewidget.h
@@ -91,6 +91,7 @@ void            gtk_gst_base_widget_finalize             (GObject * object);
 /* API */
 gboolean        gtk_gst_base_widget_set_format           (GtkGstBaseWidget * widget, GstVideoInfo * v_info);
 void            gtk_gst_base_widget_set_buffer           (GtkGstBaseWidget * widget, GstBuffer * buffer);
+void            gtk_gst_base_widget_queue_draw           (GtkGstBaseWidget * widget);
 void            gtk_gst_base_widget_set_element          (GtkGstBaseWidget * widget, GstElement * element);
 void            gtk_gst_base_widget_display_size_to_stream_size (GtkGstBaseWidget * base_widget,
                                                                  gdouble x, gdouble y,