Added NautilusBackground class, string functions that allow NULL, made

gradient functions allow NULL and treat it as an empty string, added
gdk_color_parse variants that have a default color, cleanup of
NautilusIndexPanel, and some other minor stuff.

1 files changed, 62 insertions, 0 deletions

diff --git a/libnautilus-private/nautilus-background-canvas-group.h b/libnautilus-private/nautilus-background-canvas-group.h
new file mode 100644
index 000000000..b0449f786
--- /dev/null
+++ b/libnautilus-private/nautilus-background-canvas-group.h
@@ -0,0 +1,62 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*-
+
+   nautilus-background-canvas-group.h: Class used internally by
+   NautilusBackground to add a background to a canvas.
+
+   Copyright (C) 2000 Eazel, Inc.
+   
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+  
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+  
+   You should have received a copy of the GNU General Public
+   License along with this program; if not, write to the
+   Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+  
+   Authors: Darin Adler <darin@eazel.com>
+*/
+
+#ifndef NAUTILUS_BACKGROUND_CANVAS_GROUP_H
+#define NAUTILUS_BACKGROUND_CANVAS_GROUP_H
+
+#include "nautilus-background.h"
+
+/* A NautilusBackgroundCanvasGroup is used internally by NautilusBackground to change
+   the color of a canvas. The reason we have to change the class of a canvas group is
+   that the cleanest way to hook into the code that erases the canvas is to be the
+   root canvas group. But the canvas class creates the root object and doesn't allow
+   it to be destroyed, so we change the class of the root object in place.
+
+   A future version of GnomeCanvas may allow a nicer way of hooking in to the code
+   that draws the background, and then we can get rid of this class.
+
+   This class is private to NautilusBackground.
+*/
+
+typedef GnomeCanvasGroup NautilusBackgroundCanvasGroup;
+typedef GnomeCanvasGroupClass NautilusBackgroundCanvasGroupClass;
+
+#define NAUTILUS_TYPE_BACKGROUND_CANVAS_GROUP \
+	(nautilus_background_canvas_group_get_type ())
+#define NAUTILUS_BACKGROUND_CANVAS_GROUP(obj) \
+	(GTK_CHECK_CAST ((obj), NAUTILUS_TYPE_BACKGROUND_CANVAS_GROUP, NautilusBackgroundCanvasGroup))
+#define NAUTILUS_BACKGROUND_CANVAS_GROUP_CLASS(klass) \
+	(GTK_CHECK_CLASS_CAST ((klass), NAUTILUS_TYPE_BACKGROUND_CANVAS_GROUP, NautilusBackgroundCanvasGroupClass))
+#define NAUTILUS_IS_BACKGROUND_CANVAS_GROUP(obj) \
+	(GTK_CHECK_TYPE ((obj), NAUTILUS_TYPE_BACKGROUND_CANVAS_GROUP))
+#define NAUTILUS_IS_BACKGROUND_CANVAS_GROUP_CLASS(klass) \
+	(GTK_CHECK_CLASS_TYPE ((klass), NAUTILUS_TYPE_BACKGROUND_CANVAS_GROUP))
+
+GtkType             nautilus_background_canvas_group_get_type       (void);
+NautilusBackground *nautilus_background_canvas_group_get_background (NautilusBackgroundCanvasGroup *root);
+void                nautilus_background_canvas_group_set_background (NautilusBackgroundCanvasGroup *root,
+								     NautilusBackground            *background);
+
+#endif /* NAUTILUS_BACKGROUND_CANVAS_GROUP_H */