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93 lines
2.7 KiB
93 lines
2.7 KiB
#ifndef tdegtk_widgetlookup_h
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#define tdegtk_widgetlookup_h
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/*
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* this file was largely taken from the oxygen gtk engine
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* Copyright (c) 2010 Hugo Pereira Da Costa <hugo@oxygen-icons.org>
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* Copyright (c) 2010 Ruslan Kabatsayev <b7.10110111@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or( at your option ) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include "tdegtk-hooks.h"
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#include "tdegtk-signals.h"
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#include <cairo/cairo.h>
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#include <gtk/gtk.h>
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#include <list>
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#include <map>
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//! uses the widget's "draw" signal to bind GtkWidget and cairo context
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/*! this allows us to retrieve painted widgets from ThemingEngine rendering primitives */
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class WidgetLookup
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{
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public:
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//! constructor
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explicit WidgetLookup( void );
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//! destructor
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virtual ~WidgetLookup( void );
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//! initialize hooks
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void initializeHooks( void );
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//! find widget matching given context and type
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GtkWidget* find( cairo_t*, const GtkWidgetPath* ) const;
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//! find widget matching given context and type
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GtkWidget* find( cairo_t*, GType ) const;
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protected:
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//! bind widget to context
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void bind( GtkWidget*, cairo_t* );
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//! unregister widget
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void unregisterWidget( GtkWidget* );
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//! hook connected to widget's "draw" signal
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static gboolean drawHook( GSignalInvocationHint*, guint, const GValue*, gpointer );
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//! destruction callback
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static gboolean destroyNotifyEvent( GtkWidget*, gpointer );
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private:
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//! true if hooks are initialized
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bool _hooksInitialized;
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//! hook connected to widget's "draw" signal
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Hook _drawHook;
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//! store current context
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cairo_t* _context;
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//! store list of associated widgets, to keep track of destruction
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typedef std::list<GtkWidget*> WidgetList;
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WidgetList _widgets;
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//! keep track of all registered widgets, and associated destroy callback
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typedef std::map< GtkWidget*, Signal > WidgetMap;
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WidgetMap _allWidgets;
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};
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#endif
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