File indexing completed on 2024-04-21 05:42:41

 // clang-format off
 /*
  *  This file is part of KDiff3.
  *
  * SPDX-FileCopyrightText: 2002-2011 Joachim Eibl, joachim.eibl at gmx.de
  * SPDX-FileCopyrightText: 2018-2020 Michael Reeves reeves.87@gmail.com
  * SPDX-License-Identifier: GPL-2.0-or-later
 */
 // clang-format on
 
 #ifndef RLPAINTER_H
 #define RLPAINTER_H
 
 #include "TypeUtils.h"
 
 #include <QPainter>
 // Helper class that swaps left and right for some commands.
 
 /*
     This class assists with changing KDiff3 between RTL and LTR layout.
 */
 class RLPainter: public QPainter
 {
   private:
     qint32 m_xOffset;
     qint32 m_fontWidth;
     bool bRightToLeft = false;
 
   public:
     RLPainter(QPaintDevice* pd, bool bRTL, qint32 width, qint32 fontWidth):
         QPainter(pd)
     {
         bRightToLeft = bRTL;
         if(bRTL)
         {
             m_fontWidth = fontWidth;
             m_xOffset = width - 1;
         }
         else
         {
             m_fontWidth = 0;
             m_xOffset = 0;
         }
     }
 
     void fillRect(qint32 x, qint32 y, qint32 w, qint32 h, const QBrush& b)
     {
         if(!bRightToLeft)
             QPainter::fillRect(m_xOffset + x, y, w, h, b);
         else
             QPainter::fillRect(m_xOffset - x - w, y, w, h, b);
     }
 
     void drawText(qint32 x, qint32 y, const QString& s, bool bAdapt = false)
     {
         qint32 len = SafeInt<qint32>(s.length());
         Qt::LayoutDirection ld = (!bRightToLeft || !bAdapt) ? Qt::LeftToRight : Qt::RightToLeft;
         // Qt will automaticly reverse the text as needed just set the layout direction
         QPainter::setLayoutDirection(ld);
         if(ld == Qt::RightToLeft)
         {
             QPainter::drawText(m_xOffset - m_fontWidth * len - x, y, s);
             return;
         }
         QPainter::drawText(m_xOffset - m_fontWidth * len + x, y, s);
     }
 
     void drawLine(qint32 x1, qint32 y1, qint32 x2, qint32 y2)
     {
         if(bRightToLeft)
             QPainter::drawLine(m_xOffset - x1, y1, m_xOffset - x2, y2);
         else
             QPainter::drawLine(m_xOffset + x1, y1, m_xOffset + x2, y2);
     }
 };
 
 #endif