[grits] Add clicked signal to GritsObject

[Andy Spencer <andys src gnome org>]

commit 7940344c1faea5b80fb39b44419b508568d3a6fc
Author: Andy Spencer <andy753421 gmail com>
Date:   Sat Oct 15 09:20:50 2011 +0000

    Add clicked signal to GritsObject
    
    Using mouse-down/mouse-up is rather not helpful since GritsViewer does a
    lot with mouse drags.

 src/objects/grits-object.c |   34 +++++++++++++++++++++++++++++++---
 src/objects/grits-object.h |    1 +
 2 files changed, 32 insertions(+), 3 deletions(-)
---
diff --git a/src/objects/grits-object.c b/src/objects/grits-object.c
index 5eb15d9..65d7b42 100644
--- a/src/objects/grits-object.c
+++ b/src/objects/grits-object.c
@@ -38,6 +38,7 @@
 enum {
 	SIG_ENTER,
 	SIG_LEAVE,
+	SIG_CLICKED,
 	SIG_BUTTON_PRESS,
 	SIG_BUTTON_RELEASE,
 	SIG_KEY_PRESS,
@@ -203,10 +204,20 @@ void grits_object_event(GritsObject *object, GdkEvent *event)
 	};
 	if (!object->state.selected)
 		return;
-	guint sig = signals[map[event->type]];
-	if (!g_signal_has_handler_pending(object, sig, 0, FALSE))
+	guint sig = map[event->type];
+
+	/* Handle button click */
+	if (sig == SIG_BUTTON_PRESS)
+		object->state.clicking = TRUE;
+	if (sig == SIG_BUTTON_RELEASE && object->state.clicking)
+		g_signal_emit(object, signals[SIG_CLICKED], 0, event);
+	if (sig == SIG_BUTTON_RELEASE || sig == SIG_MOTION)
+		object->state.clicking = FALSE;
+
+	/* Emit this signal */
+	if (!g_signal_has_handler_pending(object, signals[sig], 0, FALSE))
 		return;
-	g_signal_emit(object, sig, 0, event);
+	g_signal_emit(object, signals[sig], 0, event);
 }
 
 /* GObject stuff */
@@ -258,6 +269,23 @@ static void grits_object_class_init(GritsObjectClass *klass)
 			0);
 
 	/**
+	 * GritsViewer::clicked:
+	 * @object: the object.
+	 *
+	 * The ::clicked signal is emitted when the user clicks on the object
+	 */
+	signals[SIG_CLICKED] = g_signal_new(
+			"clicked",
+			G_TYPE_FROM_CLASS(gobject_class),
+			G_SIGNAL_RUN_LAST,
+			0,
+			NULL,
+			NULL,
+			g_cclosure_marshal_VOID__VOID,
+			G_TYPE_NONE,
+			0);
+
+	/**
 	 * GritsViewer::button-press:
 	 * @object: the object.
 	 * @event:  the GdkEventButton which triggered this signal
diff --git a/src/objects/grits-object.h b/src/objects/grits-object.h
index 4390a41..7073576 100644
--- a/src/objects/grits-object.h
+++ b/src/objects/grits-object.h
@@ -40,6 +40,7 @@
 typedef struct {
 	guint picked   : 1;
 	guint selected : 1;
+	guint clicking : 1;
 } GritsState;
 
 typedef struct _GritsObject      GritsObject;