add a signal "style_set" to support theme. ditto.

2005-04-28  Li Yuan  <li.yuan@sun.com>

	* gal/widgets/e-canvas-background.c: (ecb_style_set),
	(ecb_class_init):add a signal "style_set" to support theme.
	* gal/widgets/e-canvas-background.h:
	ditto.

	Fixes #301888

svn path=/trunk/; revision=29235

2 files changed, 27 insertions, 0 deletions

diff --git a/widgets/misc/e-canvas-background.c b/widgets/misc/e-canvas-background.c
index 0e57feff4e..26d9d37de2 100644
--- a/widgets/misc/e-canvas-background.c
+++ b/widgets/misc/e-canvas-background.c
@@ -56,6 +56,13 @@ struct _ECanvasBackgroundPrivate {
 static GnomeCanvasItemClass *parent_class;
 
 enum {
+	STYLE_SET,
+	LAST_SIGNAL
+};
+
+static guint ecb_signals [LAST_SIGNAL] = { 0, };
+
+enum {
 	PROP_0,
 	PROP_FILL_COLOR,
 	PROP_FILL_COLOR_GDK,
@@ -415,9 +422,18 @@ ecb_point (GnomeCanvasItem *item, double x, double y, int cx, int cy,
 }
 
 static void
+ecb_style_set (ECanvasBackground *ecb, GtkStyle *previous_style)
+{
+	GnomeCanvasItem *item = GNOME_CANVAS_ITEM (ecb);
+	gdk_gc_set_foreground (ecb->priv->gc, &GTK_WIDGET(item->canvas)->style->base[GTK_STATE_NORMAL]);
+	gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (ecb));
+}
+
+static void
 ecb_class_init (GObjectClass *object_class)
 {
 	GnomeCanvasItemClass *item_class = (GnomeCanvasItemClass *) object_class;
+	ECanvasBackgroundClass *ecb_class = (ECanvasBackgroundClass *) object_class;
 	
 	parent_class                = g_type_class_ref (PARENT_OBJECT_TYPE);
 	
@@ -431,6 +447,8 @@ ecb_class_init (GObjectClass *object_class)
 	item_class->draw            = ecb_draw;
 	item_class->point           = ecb_point;
 
+	ecb_class->style_set	    = ecb_style_set;
+
 	g_object_class_install_property (object_class, PROP_FILL_COLOR,
 					 g_param_spec_string ("fill_color",
 							      _( "Fill color" ),
@@ -486,6 +504,14 @@ ecb_class_init (GObjectClass *object_class)
 							      _( "Y2" ),
 							      0.0, G_MAXDOUBLE, 0.0,
 							      G_PARAM_READWRITE));
+	ecb_signals [STYLE_SET] =
+		g_signal_new ("style_set",
+			      G_OBJECT_CLASS_TYPE (object_class),
+			      G_SIGNAL_RUN_LAST,
+			      G_STRUCT_OFFSET (ECanvasBackgroundClass, style_set),
+			      NULL, NULL,
+			      e_marshal_NONE__OBJECT,
+			      G_TYPE_NONE, 1, GTK_TYPE_STYLE);
 }
 
 E_MAKE_TYPE (e_canvas_background,
diff --git a/widgets/misc/e-canvas-background.h b/widgets/misc/e-canvas-background.h
index 4a8e3294fb..eb3eecbd00 100644
--- a/widgets/misc/e-canvas-background.h
+++ b/widgets/misc/e-canvas-background.h
@@ -60,6 +60,7 @@ struct _ECanvasBackground {
 
 struct _ECanvasBackgroundClass {
 	GnomeCanvasItemClass parent_class;
+	void        (*style_set)        (ECanvasBackground *eti, GtkStyle *previous_style);
 };