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Diffstat (limited to 'tdegtk/tdegtk-widgetlookup.h')
-rw-r--r-- | tdegtk/tdegtk-widgetlookup.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/tdegtk/tdegtk-widgetlookup.h b/tdegtk/tdegtk-widgetlookup.h new file mode 100644 index 0000000..98a7b96 --- /dev/null +++ b/tdegtk/tdegtk-widgetlookup.h @@ -0,0 +1,92 @@ +#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 <[email protected]> +* Copyright (c) 2010 Ruslan Kabatsayev <[email protected]> +* +* 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 + |