/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: http://www.qt.io/licensing/ ** ** This file is part of the QtPDF module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL3$ ** 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. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 3 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPLv3 included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 3 requirements ** will be met: https://www.gnu.org/licenses/lgpl.html. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 2.0 or later as published by the Free ** Software Foundation and appearing in the file LICENSE.GPL included in ** the packaging of this file. Please review the following information to ** ensure the GNU General Public License version 2.0 requirements will be ** met: http://www.gnu.org/licenses/gpl-2.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #ifndef SEQUENTIALPAGEWIDGET_H #define SEQUENTIALPAGEWIDGET_H #include QT_BEGIN_NAMESPACE class QPdfDocument; QT_END_NAMESPACE 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; } void setDocument(QPdfDocument *document); public slots: void setZoom(qreal factor); void invalidate(); signals: void showingPageRange(int start, int end); void zoomChanged(qreal factor); private slots: void documentStatusChanged(); void pageLoaded(int page, qreal zoom, QImage image); private: int pageCount(); QSizeF pageSize(int page); void render(int page); private: QHash m_pageCache; QVector m_cachedPagesLRU; int m_pageCacheLimit; QVector 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 QPdfDocument *m_document; }; #endif // SEQUENTIALPAGEWIDGET_H