Check for a style_set signal on all the contained GnomeCanvasItems.

2002-03-15  Christopher James Lahey  <clahey@ximian.com>

	* gal/widgets/e-canvas.c (e_canvas_style_set): Check for a
	style_set signal on all the contained GnomeCanvasItems.

From gal/e-table/ChangeLog:

2002-03-15  Christopher James Lahey  <clahey@ximian.com>

	* e-cell-toggle.c: Clear the pixmap cache in e_cell_style_set.

	* e-cell.c, e-cell.h (e_cell_style_set): Added this virtual
	method.

	* e-table-item.c, e-table-item.h: Call e_cell_style_set in out
	style_set signal.

svn path=/trunk/; revision=16180

6 files changed, 82 insertions, 0 deletions

diff --git a/widgets/misc/e-canvas.c b/widgets/misc/e-canvas.c
index 0b9c00261a..7afdd21073 100644
--- a/widgets/misc/e-canvas.c
+++ b/widgets/misc/e-canvas.c
@@ -44,6 +44,9 @@ static gint e_canvas_focus_in       (GtkWidget        *widget,
 static gint e_canvas_focus_out      (GtkWidget        *widget,
 				     GdkEventFocus    *event);
 
+static void e_canvas_style_set      (GtkWidget        *widget,
+				     GtkStyle         *previous_style);
+
 static int emit_event (GnomeCanvas *canvas, GdkEvent *event);
 
 static GnomeCanvasClass *parent_class = NULL;
@@ -101,6 +104,7 @@ e_canvas_class_init (ECanvasClass *klass)
 	widget_class->button_release_event = e_canvas_button;
 	widget_class->focus_in_event = e_canvas_focus_in;
 	widget_class->focus_out_event = e_canvas_focus_out;
+	widget_class->style_set = e_canvas_style_set;
 	widget_class->realize = e_canvas_realize;
 	widget_class->unrealize = e_canvas_unrealize;
 
@@ -667,6 +671,32 @@ e_canvas_focus_out (GtkWidget *widget, GdkEventFocus *event)
 }
 
 static void
+ec_style_set_recursive (GnomeCanvasItem *item, GtkStyle *previous_style)
+{
+	guint signal_id = gtk_signal_lookup ("style_set", GTK_OBJECT_TYPE (item));
+	if (signal_id >= 1) {
+		GtkSignalQuery *query = gtk_signal_query (signal_id);
+		if (query->return_val == GTK_TYPE_NONE && query->nparams == 1 && query->params[0] == GTK_TYPE_STYLE) {
+			gtk_signal_emit (GTK_OBJECT (item), signal_id, previous_style);
+		}
+		g_free (query);
+	}
+
+	if (GNOME_IS_CANVAS_GROUP (item) ) {
+		GList *items = GNOME_CANVAS_GROUP (item)->item_list;
+		for (; items; items = items->next)
+			ec_style_set_recursive (items->data, previous_style);
+	}
+}
+
+static void
+e_canvas_style_set (GtkWidget *widget, GtkStyle *previous_style)
+{
+	ec_style_set_recursive (GNOME_CANVAS_ITEM (gnome_canvas_root (GNOME_CANVAS (widget))), previous_style);
+}
+
+
+static void
 e_canvas_realize (GtkWidget *widget)
 {
 	gint width, height;
diff --git a/widgets/table/e-cell-toggle.c b/widgets/table/e-cell-toggle.c
index a42d7dbd1a..0961b077ba 100644
--- a/widgets/table/e-cell-toggle.c
+++ b/widgets/table/e-cell-toggle.c
@@ -322,6 +322,21 @@ etog_max_width (ECellView *ecell_view, int model_col, int view_col)
 }
 
 static void
+etog_style_set (ECellView *ecell_view, GtkStyle *previous_style)
+{
+	ECellToggle *toggle = E_CELL_TOGGLE (ecell_view->ecell);
+	ECellToggleView *toggle_view = (ECellToggleView *) ecell_view;
+	int i;
+
+	for (i = 0; i < toggle->n_states * CACHE_SEQ_COUNT; i++) {
+		if (toggle_view->pixmap_cache[i]) {
+			gdk_pixmap_unref (toggle_view->pixmap_cache[i]);
+			toggle_view->pixmap_cache[i] = NULL;
+		}
+	}
+}
+
+static void
 etog_destroy (GtkObject *object)
 {
 	ECellToggle *etog = E_CELL_TOGGLE (object);
@@ -353,6 +368,7 @@ e_cell_toggle_class_init (GtkObjectClass *object_class)
 	ecc->event      = etog_event;
 	ecc->height     = etog_height;
 	ecc->max_width  = etog_max_width;
+	ecc->style_set  = etog_style_set;
 
 	parent_class = gtk_type_class (PARENT_TYPE);
 }
diff --git a/widgets/table/e-cell.c b/widgets/table/e-cell.c
index 729207b32f..b440370fb3 100644
--- a/widgets/table/e-cell.c
+++ b/widgets/table/e-cell.c
@@ -489,4 +489,11 @@ e_cell_get_bg_color(ECellView *ecell_view, int row)
 	else
 		return NULL;
 }
+
+void
+e_cell_style_set(ECellView *ecell_view, GtkStyle *previous_style)
+{
+	if (ECVIEW_EC_CLASS(ecell_view)->style_set)
+		ECVIEW_EC_CLASS(ecell_view)->style_set (ecell_view, previous_style);
+}
 		 		
diff --git a/widgets/table/e-cell.h b/widgets/table/e-cell.h
index d0f0f196a3..bc04f32f58 100644
--- a/widgets/table/e-cell.h
+++ b/widgets/table/e-cell.h
@@ -113,6 +113,8 @@ typedef struct {
 	int        (*max_width_by_row) (ECellView *ecell_view, int model_col, int view_col, int row);
 	void       (*show_tooltip)     (ECellView *ecell_view, int model_col, int view_col, int row, int col_width, ETableTooltip *tooltip);
 	gchar     *(*get_bg_color)     (ECellView *ecell_view, int row);
+
+	void       (*style_set)        (ECellView *ecell_view, GtkStyle *previous_style);
 } ECellClass;
 
 GtkType    e_cell_get_type                      (void);
@@ -172,6 +174,9 @@ void       e_cell_show_tooltip                  (ECellView         *ecell_view,
 						 ETableTooltip     *tooltip);
 gchar     *e_cell_get_bg_color                  (ECellView         *ecell_view,
 						 int                row);
+void       e_cell_style_set                     (ECellView         *ecell_view,
+						 GtkStyle          *previous_style);
+
 void       e_cell_focus                         (ECellView         *ecell_view,
 						 int                model_col,
 						 int                view_col,
diff --git a/widgets/table/e-table-item.c b/widgets/table/e-table-item.c
index 3ecc547a04..754234868e 100644
--- a/widgets/table/e-table-item.c
+++ b/widgets/table/e-table-item.c
@@ -69,6 +69,7 @@ enum {
 	CLICK,
 	KEY_PRESS,
 	START_DRAG,
+	STYLE_SET,
 	LAST_SIGNAL
 };
 
@@ -2756,6 +2757,19 @@ eti_event (GnomeCanvasItem *item, GdkEvent *e)
 }
 
 static void
+eti_style_set (ETableItem *eti, GtkStyle *previous_style)
+{
+	if (eti->cell_views_realized) {
+		int i;
+		int n_cells = eti->n_cells;
+
+		for (i = 0; i < n_cells; i++) {
+			e_cell_style_set (eti->cell_views[i], previous_style);
+		}
+	}
+}
+
+static void
 eti_class_init (GtkObjectClass *object_class)
 {
 	GnomeCanvasItemClass *item_class = (GnomeCanvasItemClass *) object_class;
@@ -2781,6 +2795,7 @@ eti_class_init (GtkObjectClass *object_class)
 	eti_class->click            = NULL;
 	eti_class->key_press        = NULL;
 	eti_class->start_drag       = NULL;
+	eti_class->style_set        = eti_style_set;
 
 	gtk_object_add_arg_type ("ETableItem::ETableHeader", E_TABLE_HEADER_TYPE,
 				 GTK_ARG_WRITABLE, ARG_TABLE_HEADER);
@@ -2868,6 +2883,14 @@ eti_class_init (GtkObjectClass *object_class)
 				e_marshal_INT__INT_INT_POINTER,
 				GTK_TYPE_INT, 3, GTK_TYPE_INT, GTK_TYPE_INT, GTK_TYPE_GDK_EVENT);
 
+	eti_signals [STYLE_SET] =
+		gtk_signal_new ("style_set",
+				GTK_RUN_LAST,
+				E_OBJECT_CLASS_TYPE (object_class),
+				GTK_SIGNAL_OFFSET (ETableItemClass, style_set),
+				gtk_marshal_NONE__POINTER,
+				GTK_TYPE_NONE, 1, GTK_TYPE_STYLE);
+
 	E_OBJECT_CLASS_ADD_SIGNALS (object_class, eti_signals, LAST_SIGNAL);
 
 }
diff --git a/widgets/table/e-table-item.h b/widgets/table/e-table-item.h
index 272753effe..793379b837 100644
--- a/widgets/table/e-table-item.h
+++ b/widgets/table/e-table-item.h
@@ -177,6 +177,7 @@ typedef struct {
 	gint        (*click)            (ETableItem *eti, int row, int col, GdkEvent *event);
 	gint        (*key_press)        (ETableItem *eti, int row, int col, GdkEvent *event);
 	gint        (*start_drag)       (ETableItem *eti, int row, int col, GdkEvent *event);
+	void        (*style_set)        (ETableItem *eti, GtkStyle *previous_style);
 } ETableItemClass;
 GtkType     e_table_item_get_type            (void);