File indexing completed on 2024-05-19 16:09:58

 /* This file is part of the KDE project
  * Copyright (C) 2011 Boudewijn Rempt <boud@kogmbh.com>
  * Copyright (C) 2011 Marijn Kruisselbrink <mkruisselbrink@kde.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library 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
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "KWPageCacheManager.h"
 
 #include <QImage>
 
 static const int MAX_TILE_SIZE = 1024;
 
 /*
 KWPageCache::KWPageCache(KWPageCacheManager *manager, QImage *img)
     : m_manager(manager), cache(img), allExposed(true)
 {
     cache->fill(0xffff);
 }*/
 
 KWPageCache::KWPageCache(KWPageCacheManager *manager, int w, int h)
     : m_manager(manager), m_tilesx(1), m_tilesy(1), m_size(w, h), allExposed(true)
 {
     if (w > MAX_TILE_SIZE || h > MAX_TILE_SIZE) {
         m_tilesx = w / MAX_TILE_SIZE;
         if (w % MAX_TILE_SIZE != 0) m_tilesx++;
         m_tilesy = h / MAX_TILE_SIZE;
         if (h % MAX_TILE_SIZE != 0) m_tilesy++;
 
         for (int x = 0; x < m_tilesx; x++) {
             for (int y = 0; y < m_tilesy; y++) {
                 int tilew = qMin(MAX_TILE_SIZE, w - x * MAX_TILE_SIZE);
                 int tileh = qMin(MAX_TILE_SIZE, h - y * MAX_TILE_SIZE);
                 cache.push_back(QImage(tilew, tileh, QImage::Format_RGB16));
             }
         }
     } else {
         cache.push_back(QImage(w, h, QImage::Format_RGB16));
     }
 }
 
 
 KWPageCache::~KWPageCache()
 {
 }
 
 KWPageCacheManager::KWPageCacheManager(int cacheSize)
     : m_cache(cacheSize)
 {
 }
 
 KWPageCacheManager::~KWPageCacheManager()
 {
     clear();
 }
 
 KWPageCache *KWPageCacheManager::take(const KWPage &page)
 {
     KWPageCache *cache = 0;
     if (m_cache.contains(page)) {
         cache = m_cache.take(page);
     }
     return cache;
 }
 
 void KWPageCacheManager::insert(const KWPage &page, KWPageCache *cache)
 {
     QSize size = cache->m_size;
     // make sure always at least two pages can be cached
     m_cache.insert(page, cache, qMin(m_cache.maxCost() / 2, size.width() * size.height()));
 }
 
 KWPageCache *KWPageCacheManager::cache(const QSize &size)
 {
     KWPageCache *cache = 0;
     if (!cache){
         cache = new KWPageCache(this, size.width(), size.height());
     }
     return cache;
 }
 
 void KWPageCacheManager::clear()
 {
     m_cache.clear();
 }