1 files changed, 92 insertions, 0 deletions
diff --git a/tdegtk/tdegtk-widgetlookup.h b/tdegtk/tdegtk-widgetlookup.h
new file mode 100644
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+++ b/tdegtk/tdegtk-widgetlookup.h
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+#ifndef tdegtk_widgetlookup_h
+#define tdegtk_widgetlookup_h
+/*
+* this file was largely taken from the oxygen gtk engine
+* Copyright (c) 2010 Hugo Pereira Da Costa <hugo@oxygen-icons.org>
+* Copyright (c) 2010 Ruslan Kabatsayev <b7.10110111@gmail.com>
+*
+* 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,  write to  the Free
+* Software Foundation, Inc., 51  Franklin St, Fifth Floor, Boston,
+* MA 02110-1301, USA.
+*/
+
+#include "tdegtk-hooks.h"
+#include "tdegtk-signals.h"
+
+#include <cairo/cairo.h>
+#include <gtk/gtk.h>
+
+#include <list>
+#include <map>
+
+
+    //! uses the widget's "draw" signal to bind GtkWidget and cairo context
+    /*! this allows us to retrieve painted widgets from ThemingEngine rendering primitives */
+    class WidgetLookup
+    {
+
+        public:
+
+        //! constructor
+        explicit WidgetLookup( void );
+
+        //! destructor
+        virtual ~WidgetLookup( void );
+
+        //! initialize hooks
+        void initializeHooks( void );
+
+        //! find widget matching given context and type
+        GtkWidget* find( cairo_t*, const GtkWidgetPath* ) const;
+
+        //! find widget matching given context and type
+        GtkWidget* find( cairo_t*, GType ) const;
+
+        protected:
+
+        //! bind widget to context
+        void bind( GtkWidget*, cairo_t* );
+
+        //! unregister widget
+        void unregisterWidget( GtkWidget* );
+
+        //! hook connected to widget's "draw" signal
+        static gboolean drawHook( GSignalInvocationHint*, guint, const GValue*, gpointer );
+
+        //! destruction callback
+        static gboolean destroyNotifyEvent( GtkWidget*, gpointer );
+
+        private:
+
+        //! true if hooks are initialized
+        bool _hooksInitialized;
+
+        //! hook connected to widget's "draw" signal
+        Hook _drawHook;
+
+        //! store current context
+        cairo_t* _context;
+
+        //! store list of associated widgets, to keep track of destruction
+        typedef std::list<GtkWidget*> WidgetList;
+        WidgetList _widgets;
+
+        //! keep track of all registered widgets, and associated destroy callback
+        typedef std::map< GtkWidget*, Signal > WidgetMap;
+        WidgetMap _allWidgets;
+
+    };
+
+#endif
+