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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 SEQUENTIALPAGEWIDGET_H
#define SEQUENTIALPAGEWIDGET_H
#include <QWidget>
class QPdfDocument;
class PageRenderer;
class SequentialPageWidget : public QWidget
{
Q_OBJECT
public:
explicit SequentialPageWidget(QWidget *parent = 0);
~SequentialPageWidget();
void paintEvent(QPaintEvent * event);
qreal zoom() { return m_zoom; }
qreal yForPage(int page);
int topPageShowing() { return m_topPageShowing; }
int bottomPageShowing() { return m_bottomPageShowing; }
public slots:
void openDocument(const QUrl &url);
void setZoom(qreal factor);
void invalidate();
signals:
void showingPageRange(int start, int end);
void zoomChanged(qreal factor);
private slots:
void pageLoaded(int page, qreal zoom, QImage image);
private:
int pageCount();
QSizeF pageSize(int page);
void render(int page);
private:
QHash<int, QImage> m_pageCache;
QList<int> m_cachedPagesLRU;
int m_pageCacheLimit;
QVector<QSizeF> m_pageSizes;
PageRenderer *m_pageRenderer;
QBrush m_background;
QPixmap m_placeholderIcon;
QBrush m_placeholderBackground;
int m_pageSpacing;
int m_topPageShowing;
int m_bottomPageShowing;
QSize m_totalSize;
qreal m_zoom;
qreal m_screenResolution; // pixels per point
};
#endif // SEQUENTIALPAGEWIDGET_H
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