styleprovider: Add a custom object for a list of style providers

This way, we don't have to do magic inside GtkStyleContext, but have a
real API.
As a cute bonus, this object implements GtkStyleProvider itself. So we
can just pretend there's only one provider.

1 files changed, 66 insertions, 0 deletions

diff --git a/gtk/gtkstylecascadeprivate.h b/gtk/gtkstylecascadeprivate.h
new file mode 100644
index 0000000000..cd29025cf8
--- /dev/null
+++ b/gtk/gtkstylecascadeprivate.h
@@ -0,0 +1,66 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2012 Benjamin Otte <otte@gnome.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GTK_STYLECASCADE_PRIVATE_H__
+#define __GTK_STYLECASCADE_PRIVATE_H__
+
+#include <gdk/gdk.h>
+#include <gtk/gtkstyleproviderprivate.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_STYLE_CASCADE           (_gtk_style_cascade_get_type ())
+#define GTK_STYLE_CASCADE(obj)           (G_TYPE_CHECK_INSTANCE_CAST (obj, GTK_TYPE_STYLE_CASCADE, GtkStyleCascade))
+#define GTK_STYLE_CASCADE_CLASS(cls)     (G_TYPE_CHECK_CLASS_CAST (cls, GTK_TYPE_STYLE_CASCADE, GtkStyleCascadeClass))
+#define GTK_IS_STYLE_CASCADE(obj)        (G_TYPE_CHECK_INSTANCE_TYPE (obj, GTK_TYPE_STYLE_CASCADE))
+#define GTK_IS_STYLE_CASCADE_CLASS(obj)  (G_TYPE_CHECK_CLASS_TYPE (obj, GTK_TYPE_STYLE_CASCADE))
+#define GTK_STYLE_CASCADE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_STYLE_CASCADE, GtkStyleCascadeClass))
+
+typedef struct _GtkStyleCascade           GtkStyleCascade;
+typedef struct _GtkStyleCascadeClass      GtkStyleCascadeClass;
+
+struct _GtkStyleCascade
+{
+  GObject object;
+
+  GtkStyleCascade *parent;
+  GArray *providers;
+};
+
+struct _GtkStyleCascadeClass
+{
+  GObjectClass  parent_class;
+};
+
+GType                 _gtk_style_cascade_get_type               (void) G_GNUC_CONST;
+
+GtkStyleCascade *     _gtk_style_cascade_new                    (void);
+GtkStyleCascade *     _gtk_style_cascade_get_for_screen         (GdkScreen           *screen);
+
+void                  _gtk_style_cascade_set_parent             (GtkStyleCascade     *cascade,
+                                                                 GtkStyleCascade     *parent);
+
+void                  _gtk_style_cascade_add_provider           (GtkStyleCascade     *cascade,
+                                                                 GtkStyleProvider    *provider,
+                                                                 guint                priority);
+void                  _gtk_style_cascade_remove_provider        (GtkStyleCascade     *cascade,
+                                                                 GtkStyleProvider    *provider);
+
+
+G_END_DECLS
+
+#endif /* __GTK_CSS_STYLECASCADE_PRIVATE_H__ */