File indexing completed on 2025-02-23 04:08:58

 /*
  *  SPDX-FileCopyrightText: 2015 Dmitry Kazakov <dimula73@gmail.com>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "kis_canvas_updates_compressor.h"
 
 bool KisCanvasUpdatesCompressor::putUpdateInfo(KisUpdateInfoSP info)
 {
     const int levelOfDetail = info->levelOfDetail();
     const QRect newUpdateRect = info->dirtyImageRect();
     if (newUpdateRect.isEmpty()) return false;
 
     QMutexLocker l(&m_mutex);
 
     if (info->canBeCompressed()) {
         KisUpdateInfoList::iterator it = m_updatesList.begin();
         while (it != m_updatesList.end()) {
             if ((*it)->canBeCompressed() &&
                 levelOfDetail == (*it)->levelOfDetail() &&
                 newUpdateRect.contains((*it)->dirtyImageRect())) {
 
                 /**
                  * We should always remove the overridden update and put 'info' to the end
                  * of the queue. Otherwise, the updates will become reordered and the canvas
                  * may have tiles artifacts with "outdated" data
                  */
                 it = m_updatesList.erase(it);
             } else {
                 ++it;
             }
         }
     }
 
     m_updatesList.append(info);
 
     return m_updatesList.size() <= 1;
 }
 
 void KisCanvasUpdatesCompressor::takeUpdateInfo(KisUpdateInfoList &list)
 {
     KIS_SAFE_ASSERT_RECOVER(list.isEmpty()) { list.clear(); }
 
     QMutexLocker l(&m_mutex);
     m_updatesList.swap(list);
 }