File indexing completed on 2024-04-21 05:47:02

 /*****************************************************************************
  *   Copyright 2003 - 2010 Craig Drummond <craig.p.drummond@gmail.com>       *
  *   Copyright 2013 - 2015 Yichao Yu <yyc1992@gmail.com>                     *
  *                                                                           *
  *   This program 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 2.1 of the    *
  *   License, or (at your option) version 3, or any later version accepted   *
  *   by the membership of KDE e.V. (or its successor approved by the         *
  *   membership of KDE e.V.), which shall act as a proxy defined in          *
  *   Section 6 of version 3 of the license.                                  *
  *                                                                           *
  *   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       *
  *   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/>.                                     *
  *****************************************************************************/
 
 #include "widgetmap.h"
 
 #include <qtcurve-utils/gtkprops.h>
 
 #include <unordered_map>
 
 namespace QtCurve {
 namespace WidgetMap {
 
 typedef std::unordered_map<GtkWidget*, GObjWeakRef> WidgetMap;
 static WidgetMap widget_map[2];
 
 template<typename Id>
 static inline bool
 getMapHacked(const GtkWidgetProps &props, Id &id)
 {
     return props->widgetMapHacked & (id ? (1 << 1) : (1 << 0));
 }
 
 template<typename Id>
 static inline void
 setMapHacked(const GtkWidgetProps &props, Id &id)
 {
     props->widgetMapHacked |= id ? (1 << 1) : (1 << 0);
 }
 
 static GtkWidget*
 lookupHash(GtkWidget *hash, GtkWidget *value, int map)
 {
     auto it = widget_map[map].find(hash);
     GtkWidget *rv = (it != widget_map[map].end() ?
                      (*it).second.get<GtkWidget>() : nullptr);
     if (!rv && value) {
         widget_map[map].emplace(std::piecewise_construct,
                                 std::forward_as_tuple(hash),
                                 std::forward_as_tuple(value));
         rv = value;
     }
     return rv;
 }
 
 static void
 removeHash(GtkWidget *hash)
 {
     for (int i = 0;i < 2;++i) {
         widget_map[i].erase(hash);
     }
 }
 
 static void
 cleanup(GtkWidget *widget)
 {
     GtkWidgetProps props(widget);
     if (props->widgetMapHacked) {
         props->widgetMapDestroy.disconn();
         props->widgetMapUnrealize.disconn();
         props->widgetMapStyleSet.disconn();
         props->widgetMapHacked = 0;
         removeHash(widget);
     }
 }
 
 static gboolean
 styleSet(GtkWidget *widget, GtkStyle*, void*)
 {
     cleanup(widget);
     return false;
 }
 
 static gboolean
 destroy(GtkWidget *widget, GdkEvent*, void*)
 {
     cleanup(widget);
     return false;
 }
 
 void
 setup(GtkWidget *from, GtkWidget *to, int map)
 {
     GtkWidgetProps fromProps(from);
     if (from && to && !getMapHacked(fromProps, map)) {
         if (!fromProps->widgetMapHacked) {
             fromProps->widgetMapDestroy.conn("destroy-event", destroy);
             fromProps->widgetMapUnrealize.conn("unrealize", destroy);
             fromProps->widgetMapStyleSet.conn("style-set", styleSet);
         }
         setMapHacked(fromProps, map);
         lookupHash(from, to, map);
     }
 }
 
 GtkWidget*
 getWidget(GtkWidget *widget, int map)
 {
     GtkWidgetProps props(widget);
     return (widget && getMapHacked(props, map) ?
             lookupHash(widget, nullptr, map) : nullptr);
 }
 
 }
 }