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/*
Copyright 2014 Adam Reichold
This file is part of qpdfview.
qpdfview is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
qpdfview 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with qpdfview. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef TILEITEM_H
#define TILEITEM_H
#include <QCache>
#include <QObject>
#include <QPixmap>
#include "rendertask.h"
namespace qpdfview
{
class PageItem;
class TileItem : public RenderTaskParent
{
public:
TileItem(PageItem* page);
~TileItem();
const QRect& rect() const { return m_rect; }
void setRect(QRect rect) { m_rect = rect; }
const QRectF& cropRect() const { return m_cropRect; }
void resetCropRect() { m_cropRect = QRectF(); }
void setCropRect(const QRectF& cropRect);
void dropPixmap() { m_pixmap = QPixmap(); }
void dropObsoletePixmap() { m_obsoletePixmap = QPixmap(); }
static void dropCachedPixmaps(PageItem* page);
bool paint(QPainter* painter, QPointF topLeft);
public:
void refresh(bool keepObsoletePixmaps = false);
int startRender(bool prefetch = false);
void cancelRender();
void deleteAfterRender();
private:
void on_finished(const RenderParam& renderParam,
const QRect& rect, bool prefetch,
const QImage& image, const QRectF& cropRect);
void on_canceled();
void on_finishedOrCanceled();
private:
Q_DISABLE_COPY(TileItem)
static Settings* s_settings;
typedef QPair< PageItem*, QByteArray > CacheKey;
typedef QPair< QPixmap, QRectF > CacheObject;
static QCache< CacheKey, CacheObject > s_cache;
CacheKey cacheKey() const;
PageItem* m_page;
QRect m_rect;
QRectF m_cropRect;
bool m_pixmapError;
QPixmap m_pixmap;
QPixmap m_obsoletePixmap;
QPixmap takePixmap();
bool m_deleteAfterRender;
RenderTask m_renderTask;
};
} // qpdfview
#endif // PAGEITEM_H
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