New signal for when the width of the column changes.

2002-02-13  Christopher James Lahey  <clahey@ximian.com>

	* gal/widgets/e-reflow.c, gal/widgets/e-reflow.h
	(column_width_changed): New signal for when the width of the
	column changes.

	* gal/util/e-util.c, gal/util/e-util.h (e_marshal_NONE__DOUBLE):
	New marshaller.

From gal/menus/ChangeLog:

2002-02-13  Christopher James Lahey  <clahey@ximian.com>

	* gal-view-etable.c (detach_table): Set
	view->table_state_changed_id to 0.
	(detach_tree): Set view->tree_state_changed_id to 0.

svn path=/trunk/; revision=15705

3 files changed, 24 insertions, 0 deletions

diff --git a/widgets/menus/gal-view-etable.c b/widgets/menus/gal-view-etable.c
index 87351866bd..f81482435d 100644
--- a/widgets/menus/gal-view-etable.c
+++ b/widgets/menus/gal-view-etable.c
@@ -38,6 +38,7 @@ detach_table (GalViewEtable *view)
 	if (view->table_state_changed_id) {
 		gtk_signal_disconnect (GTK_OBJECT (view->table),
 				       view->table_state_changed_id);
+		view->table_state_changed_id = 0;
 	}
 	gtk_object_unref (GTK_OBJECT (view->table));
 	view->table = NULL;
@@ -51,6 +52,7 @@ detach_tree (GalViewEtable *view)
 	if (view->tree_state_changed_id) {
 		gtk_signal_disconnect (GTK_OBJECT (view->tree),
 				       view->tree_state_changed_id);
+		view->tree_state_changed_id = 0;
 	}
 	gtk_object_unref (GTK_OBJECT (view->tree));
 	view->tree = NULL;
diff --git a/widgets/misc/e-reflow.c b/widgets/misc/e-reflow.c
index ed83956232..f628dec126 100644
--- a/widgets/misc/e-reflow.c
+++ b/widgets/misc/e-reflow.c
@@ -68,6 +68,7 @@ enum {
 
 enum {
 	SELECTION_EVENT,
+	COLUMN_WIDTH_CHANGED,
 	LAST_SIGNAL
 };
 
@@ -569,6 +570,12 @@ disconnect_set_adjustment (EReflow *reflow)
 	}
 }
 
+static void
+column_width_changed (EReflow *reflow)
+{
+	gtk_signal_emit (GTK_OBJECT (reflow), signals[COLUMN_WIDTH_CHANGED], reflow->column_width);
+}
+
 
 
 
@@ -606,6 +613,7 @@ e_reflow_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
 	case ARG_COLUMN_WIDTH:
 		if (reflow->column_width != GTK_VALUE_INT (*arg)) {
 			GtkAdjustment *adjustment = gtk_layout_get_hadjustment(GTK_LAYOUT(item->canvas));
+			double old_width = reflow->column_width;
 
 			reflow->column_width = GTK_VALUE_INT (*arg);
 			adjustment->step_increment = (reflow->column_width + E_REFLOW_FULL_GUTTER) / 2;
@@ -616,6 +624,9 @@ e_reflow_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
 
 			reflow->need_column_resize = TRUE;
 			gnome_canvas_item_request_update(item);
+
+			if (old_width != reflow->column_width)
+				column_width_changed (reflow);
 		}
 		break;
 	}
@@ -874,6 +885,7 @@ e_reflow_event (GnomeCanvasItem *item, GdkEvent *event)
 					gtk_adjustment_changed(adjustment);
 					e_reflow_resize_children(item);
 					e_canvas_item_request_reflow(item);
+					column_width_changed (reflow);
 				}
 				reflow->need_column_resize = TRUE;
 				gnome_canvas_item_request_update(item);
@@ -1262,6 +1274,14 @@ e_reflow_class_init (EReflowClass *klass)
 				e_marshal_INT__OBJECT_POINTER,
 				GTK_TYPE_INT, 2, GTK_TYPE_OBJECT, GTK_TYPE_GDK_EVENT);
 
+	signals [COLUMN_WIDTH_CHANGED] =
+		gtk_signal_new ("column_width_changed",
+				GTK_RUN_LAST,
+				E_OBJECT_CLASS_TYPE (object_class),
+				GTK_SIGNAL_OFFSET (EReflowClass, column_width_changed),
+				e_marshal_NONE__DOUBLE,
+				GTK_TYPE_NONE, 1, GTK_TYPE_DOUBLE);
+
 	E_OBJECT_CLASS_ADD_SIGNALS (object_class, signals, LAST_SIGNAL);
 
 	object_class->set_arg  = e_reflow_set_arg;
@@ -1277,6 +1297,7 @@ e_reflow_class_init (EReflowClass *klass)
 	item_class->point      = e_reflow_point;
 
 	klass->selection_event = e_reflow_selection_event_real;
+	klass->column_width_changed = NULL;
 }
 
 static void
diff --git a/widgets/misc/e-reflow.h b/widgets/misc/e-reflow.h
index 5b699431cc..0aed25945c 100644
--- a/widgets/misc/e-reflow.h
+++ b/widgets/misc/e-reflow.h
@@ -121,6 +121,7 @@ struct _EReflowClass
 	GnomeCanvasGroupClass parent_class;
 
 	int (*selection_event) (EReflow *reflow, GnomeCanvasItem *item, GdkEvent *event);
+	void (*column_width_changed) (EReflow *reflow, double width);
 };
 
 /*