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/******************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt PDF Module.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
******************************************************************************/
#ifndef PAGECACHE_H
#define PAGECACHE_H
#include <QImage>
#include <QThread>
class QPdfDocument;
class PageRenderer : public QThread
{
Q_OBJECT
public:
explicit PageRenderer(QObject *parent = nullptr);
public slots:
void setDocument(QPdfDocument *document);
void requestPage(int page, qreal zoom, Priority priority = QThread::NormalPriority);
signals:
void pageReady(int page, qreal zoom, QImage image);
protected:
void run() override;
private:
void renderPage(int page, qreal zoom);
private:
QPdfDocument *m_document;
// current request only
int m_page;
qreal m_zoom;
// performance statistics
qreal m_minRenderTime;
qreal m_maxRenderTime;
qreal m_totalRenderTime;
int m_totalPagesRendered;
};
#endif // PAGECACHE_H
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