102 regels
2.3 KiB
C++
102 regels
2.3 KiB
C++
/*
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Copyright 2014 Adam Reichold
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This file is part of qpdfview.
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qpdfview is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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qpdfview is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with qpdfview. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef TILEITEM_H
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#define TILEITEM_H
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#include <QCache>
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#include <QObject>
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#include <QPixmap>
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#include "rendertask.h"
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namespace qpdfview
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{
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class PageItem;
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class TileItem : public RenderTaskParent
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{
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public:
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TileItem(PageItem* page);
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~TileItem();
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const QRect& rect() const { return m_rect; }
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void setRect(QRect rect) { m_rect = rect; }
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const QRectF& cropRect() const { return m_cropRect; }
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void resetCropRect() { m_cropRect = QRectF(); }
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void setCropRect(const QRectF& cropRect);
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void dropPixmap() { m_pixmap = QPixmap(); }
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void dropObsoletePixmap() { m_obsoletePixmap = QPixmap(); }
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static void dropCachedPixmaps(PageItem* page);
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bool paint(QPainter* painter, QPointF topLeft);
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public:
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void refresh(bool keepObsoletePixmaps = false);
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int startRender(bool prefetch = false);
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void cancelRender();
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void deleteAfterRender();
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private:
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void on_finished(const RenderParam& renderParam,
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const QRect& rect, bool prefetch,
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const QImage& image, const QRectF& cropRect);
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void on_canceled();
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void on_finishedOrCanceled();
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private:
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Q_DISABLE_COPY(TileItem)
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static Settings* s_settings;
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typedef QPair< PageItem*, QByteArray > CacheKey;
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typedef QPair< QPixmap, QRectF > CacheObject;
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static QCache< CacheKey, CacheObject > s_cache;
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CacheKey cacheKey() const;
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PageItem* m_page;
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QRect m_rect;
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QRectF m_cropRect;
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bool m_pixmapError;
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QPixmap m_pixmap;
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QPixmap m_obsoletePixmap;
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QPixmap takePixmap();
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bool m_deleteAfterRender;
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RenderTask m_renderTask;
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};
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} // qpdfview
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#endif // PAGEITEM_H
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