[gnome-panel] panel: Add style class for orientation to PanelAppletFrame

[Vincent Untz <vuntz src gnome org>]

commit 5990d903635adf513ce4bd655ad48c5d7ab7f749
Author: Peter Hurley <peter hurleysoftware com>
Date:   Mon Mar 5 13:14:44 2012 -0500

    panel: Add style class for orientation to PanelAppletFrame
    
      Add style class "horizontal" or "vertical" based on the orientation
      of the PanelAppletFrame. This allows themeing to adjust styling for
      vertical panels. An example selector would be:
    
      PanelAppletFrame.vertical {
        background-image: -gtk-gradient (linear, right top, left top,
                                         from (shade (@dark_bg_color, 1.15)),
                                         to (shade (@dark_bg_color, 0.95)));
       }
    
    Signed-off-by: Peter Hurley <peter hurleysoftware com>
    
    https://bugzilla.gnome.org/show_bug.cgi?id=672070

 gnome-panel/panel-applet-frame.c |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)
---
diff --git a/gnome-panel/panel-applet-frame.c b/gnome-panel/panel-applet-frame.c
index c6c6db4..b1e4f60 100644
--- a/gnome-panel/panel-applet-frame.c
+++ b/gnome-panel/panel-applet-frame.c
@@ -464,12 +464,17 @@ panel_applet_frame_class_init (PanelAppletFrameClass *klass)
 static void
 panel_applet_frame_init (PanelAppletFrame *frame)
 {
+	GtkStyleContext *context;
+
 	frame->priv = PANEL_APPLET_FRAME_GET_PRIVATE (frame);
 
 	frame->priv->panel       = NULL;
 	frame->priv->orientation = PANEL_ORIENTATION_TOP;
 	frame->priv->applet_info = NULL;
 	frame->priv->has_handle  = FALSE;
+
+	context = gtk_widget_get_style_context (GTK_WIDGET (frame));
+	gtk_style_context_add_class (context, GTK_STYLE_CLASS_HORIZONTAL);
 }
 
 static void
@@ -498,10 +503,23 @@ void
 panel_applet_frame_change_orientation (PanelAppletFrame *frame,
 				       PanelOrientation  orientation)
 {
+	GtkStyleContext *context;
+
 	if (orientation == frame->priv->orientation)
 		return;
 
 	frame->priv->orientation = orientation;
+
+	context = gtk_widget_get_style_context (GTK_WIDGET (frame));
+	if (orientation & PANEL_HORIZONTAL_MASK) {
+		gtk_style_context_add_class (context, GTK_STYLE_CLASS_HORIZONTAL);
+		gtk_style_context_remove_class (context, GTK_STYLE_CLASS_VERTICAL);
+	} else {
+		gtk_style_context_add_class (context, GTK_STYLE_CLASS_VERTICAL);
+		gtk_style_context_remove_class (context, GTK_STYLE_CLASS_HORIZONTAL);
+	}
+	gtk_widget_reset_style (GTK_WIDGET (frame));
+
 	PANEL_APPLET_FRAME_GET_CLASS (frame)->change_orientation (frame, orientation);
 }