static void
device_combo_box_finalize (GObject *object)
{
device_combo_box_store_id (UNICAPGTK_DEVICE_SELECTION (object), NULL);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GObject *
device_combo_box_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
UnicapgtkDeviceSelection *combo;
GObject *object;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
combo = UNICAPGTK_DEVICE_SELECTION (object);
if (combo->include_rescan_entry)
{
GtkTreeModel *model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo));
device_combo_box_add_rescan_entry (GTK_LIST_STORE (model));
}
g_signal_connect (combo, "changed",
G_CALLBACK (device_combo_box_changed),
NULL);
return object;
}
static void
device_combo_box_realize (GtkWidget *widget)
{
UnicapgtkDeviceSelection *combo = UNICAPGTK_DEVICE_SELECTION (widget);
g_return_if_fail (combo->busy_cursor == NULL);
combo->busy_cursor =
gdk_cursor_new_for_display (gtk_widget_get_display (widget), GDK_WATCH);
GTK_WIDGET_CLASS (parent_class)->realize (widget);
}
static void
device_combo_box_unrealize (GtkWidget *widget)
{
UnicapgtkDeviceSelection *combo = UNICAPGTK_DEVICE_SELECTION (widget);
if (combo->busy_cursor)
{
gdk_cursor_unref (combo->busy_cursor);
combo->busy_cursor = NULL;
}
GTK_WIDGET_CLASS (parent_class)->unrealize (widget);
}
int main( int argc, char *argv[] )
{
/* GtkWidget *display_window; */
GtkWidget *video_display;
GtkWidget *device_selection;
GtkWidget *widget;
GTimer *fps_timer;
g_thread_init(NULL);
gdk_threads_init();
gtk_init (&argc, &argv);
//
// Create the main application window
//
display_window = create_application_window( );
video_display = g_object_get_data( G_OBJECT( display_window ), "ugtk_display" );
g_assert( video_display );
device_selection = g_object_get_data( G_OBJECT( video_display ), "device_selection" );
g_assert( device_selection );
fps_timer = g_timer_new();
unicapgtk_video_display_set_new_frame_callback( UNICAPGTK_VIDEO_DISPLAY( video_display ),
UNICAPGTK_CALLBACK_FLAGS_BEFORE,
(unicap_new_frame_callback_t)new_frame_cb,
fps_timer );
//
// Create a window containing the properties for the
// video capture device and a device selection menu
//
widget = unicapgtk_property_dialog_new( );
gtk_widget_show_all( widget );
g_object_set_data( G_OBJECT( video_display ), "property_dialog", widget );
//
// Rescan devices and select first device
//
if( unicapgtk_device_selection_rescan( UNICAPGTK_DEVICE_SELECTION( device_selection ) ) > 0 )
{
gtk_combo_box_set_active (GTK_COMBO_BOX( device_selection ), 0);
}
gdk_threads_enter();
gtk_main ();
gdk_threads_leave();
return 0;
}
static void
device_combo_box_changed( GtkComboBox *combo )
{
UnicapgtkDeviceSelection *device_combo = UNICAPGTK_DEVICE_SELECTION( combo );
GtkTreeIter iter;
if( gtk_combo_box_get_active_iter (combo, &iter) )
{
GtkTreeModel *model = gtk_combo_box_get_model( combo );
gchar *device_id;
gint special;
gtk_tree_model_get( model, &iter,
UNICAPGTK_DEVICE_ID, &device_id,
SPECIAL, &special,
-1 );
if( device_id )
{
device_combo_box_store_id( device_combo, device_id );
g_free( device_id );
g_signal_emit( G_OBJECT( combo ),
unicapgtk_device_selection_signals[UNICAPGTK_DEVICE_SELECTION_CHANGED_SIGNAL],
0,
device_combo->active_device );
return;
}
g_signal_stop_emission_by_name( combo, "changed" );
switch( special )
{
case NOT_SPECIAL:
break;
case SPECIAL_RESCAN:
unicapgtk_device_selection_rescan (device_combo);
break;
default:
device_combo_box_store_id (device_combo, NULL);
break;
}
}
}
static void
device_combo_box_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
UnicapgtkDeviceSelection *combo = UNICAPGTK_DEVICE_SELECTION (object);
switch (property_id)
{
case PROP_INCLUDE_RESCAN_ENTRY:
g_value_set_boolean (value, combo->include_rescan_entry);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
