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 /*****************************************************************************
  *   Copyright 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/>.                                     *
  *****************************************************************************/
 
 #ifndef shadowhelper_h
 #define shadowhelper_h
 
 //////////////////////////////////////////////////////////////////////////////
 // shadowhelper.h
 // handle shadow pixmaps passed to window manager via X property
 // -------------------
 //
 // Copyright (c) 2010 Hugo Pereira Da Costa <hugo@oxygen-icons.org>
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to
 // deal in the Software without restriction, including without limitation the
 // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 // sell copies of the Software, and to permit persons to whom the Software is
 // furnished to do so, subject to the following conditions:
 //
 // The above copyright notice and this permission notice shall be included in
 // all copies or substantial portions of the Software.
 //
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 // IN THE SOFTWARE.
 //////////////////////////////////////////////////////////////////////////////
 
 #include <QObject>
 
 namespace QtCurve {
 //! handle shadow pixmaps passed to window manager via X property
 class ShadowHelper: public QObject {
     Q_OBJECT
 public:
     //!@name property names
     static const char *const netWMForceShadowPropertyName;
     static const char *const netWMSkipShadowPropertyName;
     //! constructor
     ShadowHelper(QObject *parent): QObject(parent)
     {
     }
 
     //! register widget
     bool registerWidget(QWidget*, bool force=false);
 
     //! unregister widget
     void unregisterWidget(QWidget*);
 
     //! event filter
     bool eventFilter(QObject*, QEvent*) override;
 
 protected:
     //! accept widget
     bool acceptWidget(QWidget*) const;
 
     //! install shadow X11 property on given widget
     bool installX11Shadows(QWidget*);
 
     //! uninstall shadow X11 property on given widget
     void uninstallX11Shadows(QWidget*) const;
 };
 }
 
 #endif