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#ifndef PAGECACHE_H
#define PAGECACHE_H
#include <QBrush>
#include <QHash>
#include <QPixmap>
#include <QRunnable>
#include <QThread>
#include <QPdfDocument>
#include <QNetworkAccessManager>
class QPdfDocument;
class PageRenderer : public QObject
{
Q_OBJECT
public:
PageRenderer();
~PageRenderer();
public slots:
void openDocument(const QUrl &location);
void requestPage(int page, qreal zoom);
signals:
void pageSizesAvailable(const QVector<QSizeF> &sizes);
void pageReady(int page, qreal zoom, QImage image);
private slots:
void reportPageSizes();
void loadDocumentImpl(const QUrl &url);
void requestPageImpl(int page, qreal zoom);
void renderPages();
void renderPageIfRequested(int page);
void handleNetworkRequestError();
private:
QThread m_workerThread;
QPdfDocument m_doc;
struct RenderRequest {
int page;
qreal zoom;
};
QVector<RenderRequest> m_renderRequests;
QNetworkAccessManager *m_networkAccessManager;
// performance statistics
qreal m_minRenderTime;
qreal m_maxRenderTime;
qreal m_totalRenderTime;
int m_totalPagesRendered;
};
#endif // PAGECACHE_H
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