text: /****************************************************************************
  **
  ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
  ** All rights reserved.
  ** Contact: Nokia Corporation (qt-info@nokia.com)
  **
  ** This file is part of the QtGui module of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:LGPL$
  ** GNU Lesser General Public License Usage
  ** This file may be used under the terms of the GNU Lesser General Public
  ** License version 2.1 as published by the Free Software Foundation and
  ** appearing in the file LICENSE.LGPL included in the packaging of this
  ** file. Please review the following information to ensure the GNU Lesser
  ** General Public License version 2.1 requirements will be met:
  ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
  **
  ** In addition, as a special exception, Nokia gives you certain additional
  ** rights. These rights are described in the Nokia Qt LGPL Exception
  ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
  **
  ** GNU General Public License Usage
  ** Alternatively, this file may be used under the terms of the GNU General
  ** Public License version 3.0 as published by the Free Software Foundation
  ** and appearing in the file LICENSE.GPL included in the packaging of this
  ** file. Please review the following information to ensure the GNU General
  ** Public License version 3.0 requirements will be met:
  ** http://www.gnu.org/copyleft/gpl.html.
  **
  ** Other Usage
  ** Alternatively, this file may be used in accordance with the terms and
  ** conditions contained in a signed written agreement between you and Nokia.
  **
  **
  **
  **
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/
  
  #ifndef QSTYLE_P_H
  #define QSTYLE_P_H
  
  #include "private/qobject_p.h"
  #include <QtGui/qstyle.h>
  
  QT_BEGIN_NAMESPACE
  
  //
  //  W A R N I N G
  //  -------------
  //
  // This file is not part of the Qt API.  It exists for the convenience
  // of qstyle_*.cpp.  This header file may change from version to version
  // without notice, or even be removed.
  //
  // We mean it.
  //
  
  // Private class
  
  class QStyle;
  
  class QStylePrivate: public QObjectPrivate
  {
      Q_DECLARE_PUBLIC(QStyle)
  public:
      inline QStylePrivate()
          : layoutSpacingIndex(-1), proxyStyle(0) {}
      mutable int layoutSpacingIndex;
      QStyle *proxyStyle;
  };
  
  
  #define BEGIN_STYLE_PIXMAPCACHE(a) \
      QRect rect = option->rect; \
      QPixmap internalPixmapCache; \
      QImage imageCache; \
      QPainter *p = painter; \
      QString unique = QStyleHelper::uniqueName((a), option, option->rect.size()); \
      int txType = painter->deviceTransform().type() | painter->worldTransform().type(); \
      bool doPixmapCache = txType <= QTransform::TxTranslate; \
      if (doPixmapCache && QPixmapCache::find(unique, internalPixmapCache)) { \
          painter->drawPixmap(option->rect.topLeft(), internalPixmapCache); \
      } else { \
          if (doPixmapCache) { \
              rect.setRect(0, 0, option->rect.width(), option->rect.height()); \
              imageCache = QImage(option->rect.size(), QImage::Format_ARGB32_Premultiplied); \
              imageCache.fill(0); \
              p = new QPainter(&imageCache); \
          }
  
  
  
  #define END_STYLE_PIXMAPCACHE \
          if (doPixmapCache) { \
              p->end(); \
              delete p; \
              internalPixmapCache = QPixmap::fromImage(imageCache); \
              painter->drawPixmap(option->rect.topLeft(), internalPixmapCache); \
              QPixmapCache::insert(unique, internalPixmapCache); \
          } \
      }
  
  QT_END_NAMESPACE
  
  #endif //QSTYLE_P_H
  