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update state from bus; set button icon from playback state

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This commit is contained in:
Brandon Lewis 2010-07-22 12:43:13 +02:00 committed by Edward Hervey
parent b7c2956827
commit aae0e26508
1 changed files with 41 additions and 0 deletions
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41
tests/examples/ges-ui.c
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@ -36,6 +36,7 @@ typedef struct App
GtkHScale *duration;
GtkHScale *in_point;
GtkAction *delete;
GtkAction *play;
GstState state;
} App;
@ -431,6 +432,40 @@ layer_object_removed_cb (GESTimelineLayer * layer, GESTimelineObject * object,
gtk_list_store_remove (app->model, &iter);
}
static void
pipeline_state_changed_cb (App * app)
{
if (app->state == GST_STATE_PLAYING)
gtk_action_set_stock_id (app->play, GTK_STOCK_MEDIA_PAUSE);
else
gtk_action_set_stock_id (app->play, GTK_STOCK_MEDIA_PLAY);
}
static void
bus_message_cb (GstBus * bus, GstMessage * message, App * app)
{
const GstStructure *s;
s = gst_message_get_structure (message);
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_ERROR:
g_print ("ERROR\n");
break;
case GST_MESSAGE_EOS:
break;
case GST_MESSAGE_STATE_CHANGED:
if (s && GST_MESSAGE_SRC (message) == GST_OBJECT_CAST (app->pipeline)) {
GstState old, new, pending;
gst_message_parse_state_changed (message, &old, &new, &pending);
app->state = new;
pipeline_state_changed_cb (app);
}
break;
default:
break;
}
}
/* UI Configuration *********************************************************/
#define GET_WIDGET(dest,name,type) {\
@ -472,6 +507,7 @@ create_ui (App * app)
GtkTreeView *timeline;
GtkTreeViewColumn *duration_col;
GtkCellRenderer *duration_renderer;
GstBus *bus;
/* construct widget tree */
@ -489,6 +525,7 @@ create_ui (App * app)
GET_WIDGET (duration_col, "duration_column", GTK_TREE_VIEW_COLUMN);
GET_WIDGET (duration_renderer, "duration_renderer", GTK_CELL_RENDERER);
GET_WIDGET (app->delete, "delete", GTK_ACTION);
GET_WIDGET (app->play, "play", GTK_ACTION);
/* we care when the tree selection changes */
@ -517,6 +554,10 @@ create_ui (App * app)
g_signal_connect (app->layer, "object-removed",
G_CALLBACK (layer_object_removed_cb), app);
bus = gst_pipeline_get_bus (GST_PIPELINE (app->pipeline));
gst_bus_add_signal_watch (bus);
g_signal_connect (bus, "message", G_CALLBACK (bus_message_cb), app);
/* success */
g_object_unref (G_OBJECT (builder));