229 行
6.4 KiB
C++
229 行
6.4 KiB
C++
/*
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Copyright 2012-2014 Adam Reichold
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This file is part of qpdfview.
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qpdfview is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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qpdfview is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with qpdfview. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef PAGEITEM_H
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#define PAGEITEM_H
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#include <QCache>
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#include <QFutureWatcher>
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#include <QGraphicsObject>
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#include <QIcon>
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#include <QSet>
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class QGraphicsProxyWidget;
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#include "renderparam.h"
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namespace qpdfview
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{
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namespace Model
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{
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struct Link;
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class Annotation;
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class FormField;
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class Page;
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}
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class Settings;
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class RenderTask;
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class TileItem;
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class PageItem : public QGraphicsObject
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{
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Q_OBJECT
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friend class TileItem;
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public:
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enum PaintMode
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{
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DefaultMode,
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PresentationMode,
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ThumbnailMode
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};
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PageItem(Model::Page* page, int index, PaintMode paintMode = DefaultMode, QGraphicsItem* parent = 0);
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~PageItem();
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const QRectF& uncroppedBoundingRect() const { return m_boundingRect; }
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QRectF boundingRect() const;
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void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget*);
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int index() const { return m_index; }
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const QSizeF& size() const { return m_size; }
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QSizeF displayedSize() const { return displayedSize(renderParam()); }
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QSizeF displayedSize(const RenderParam& renderParam) const;
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const QList< QRectF >& highlights() const { return m_highlights; }
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void setHighlights(const QList< QRectF >& highlights);
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RubberBandMode rubberBandMode() const { return m_rubberBandMode; }
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void setRubberBandMode(RubberBandMode rubberBandMode);
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bool showsAnnotationOverlay() const { return !m_annotationOverlay.isEmpty(); }
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bool showsFormFieldOverlay() const { return !m_formFieldOverlay.isEmpty(); }
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const RenderParam& renderParam() const { return m_renderParam; }
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void setRenderParam(const RenderParam& renderParam);
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const QTransform& transform() const { return m_transform; }
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const QTransform& normalizedTransform() const { return m_normalizedTransform; }
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QPointF sourcePos(QPointF point) const { return m_transform.inverted().map(point); }
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QPointF normalizedSourcePos(QPointF point) const { return m_normalizedTransform.inverted().map(point); }
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signals:
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void cropRectChanged();
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void linkClicked(bool newTab, int page, qreal left = qQNaN(), qreal top = qQNaN());
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void linkClicked(bool newTab, const QString& fileName, int page);
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void linkClicked(const QString& url);
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void rubberBandStarted();
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void rubberBandFinished();
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void zoomToSelection(int page, const QRectF& rect);
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void openInSourceEditor(int page, QPointF pos);
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void wasModified();
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public slots:
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void refresh(bool keepObsoletePixmaps = false, bool dropCachedPixmaps = false);
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int startRender(bool prefetch = false);
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void cancelRender();
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protected slots:
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void showAnnotationOverlay(Model::Annotation* selectedAnnotation);
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void hideAnnotationOverlay(bool deleteLater = true);
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void updateAnnotationOverlay();
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void showFormFieldOverlay(Model::FormField* selectedFormField);
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void hideFormFieldOverlay(bool deleteLater = true);
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void updateFormFieldOverlay();
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protected:
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void hoverEnterEvent(QGraphicsSceneHoverEvent*);
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void hoverMoveEvent(QGraphicsSceneHoverEvent* event);
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void hoverLeaveEvent(QGraphicsSceneHoverEvent*);
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void mousePressEvent(QGraphicsSceneMouseEvent* event);
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void mouseMoveEvent(QGraphicsSceneMouseEvent* event);
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void mouseReleaseEvent(QGraphicsSceneMouseEvent* event);
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void contextMenuEvent(QGraphicsSceneContextMenuEvent* event);
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private slots:
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void on_loadInteractiveElements_finished();
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private:
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Q_DISABLE_COPY(PageItem)
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static Settings* s_settings;
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Model::Page* m_page;
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QSizeF m_size;
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QRectF m_cropRect;
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void updateCropRect();
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int m_index;
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PaintMode m_paintMode;
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bool presentationMode() const;
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bool thumbnailMode() const;
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bool useTiling() const;
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QList< QRectF > m_highlights;
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// interactive elements
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QFutureWatcher< void >* m_loadInteractiveElements;
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void startLoadInteractiveElements();
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void loadInteractiveElements();
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QList< Model::Link* > m_links;
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QList< Model::Annotation* > m_annotations;
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QList< Model::FormField* > m_formFields;
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RubberBandMode m_rubberBandMode;
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QRectF m_rubberBand;
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void copyToClipboard(QPoint screenPos);
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void addAnnotation(QPoint screenPos);
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void showLinkContextMenu(Model::Link* link, QPoint screenPos);
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void showAnnotationContextMenu(Model::Annotation* annotation, QPoint screenPos);
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// overlay
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typedef QMap< Model::Annotation*, QGraphicsProxyWidget* > AnnotationOverlay;
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AnnotationOverlay m_annotationOverlay;
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typedef QMap< Model::FormField*, QGraphicsProxyWidget* > FormFieldOverlay;
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FormFieldOverlay m_formFieldOverlay;
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template< typename Overlay, typename Element > void showOverlay(Overlay& overlay, const char* hideOverlay, const QList< Element* >& elements, Element* selectedElement);
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template< typename Overlay, typename Element > void addProxy(Overlay& overlay, const char* hideOverlay, Element* element);
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template< typename Overlay > void hideOverlay(Overlay& overlay, bool deleteLater);
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template< typename Overlay > void updateOverlay(const Overlay& overlay) const;
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void setProxyGeometry(Model::Annotation* annotation, QGraphicsProxyWidget* proxy) const;
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void setProxyGeometry(Model::FormField* formField, QGraphicsProxyWidget* proxy) const;
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// geometry
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RenderParam m_renderParam;
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QTransform m_transform;
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QTransform m_normalizedTransform;
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QRectF m_boundingRect;
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void prepareGeometry();
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QVector< TileItem* > m_tileItems;
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mutable QSet< TileItem* > m_exposedTileItems;
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void prepareTiling();
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// paint
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void paintPage(QPainter* painter, const QRectF& exposedRect) const;
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void paintLinks(QPainter* painter) const;
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void paintFormFields(QPainter* painter) const;
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void paintHighlights(QPainter* painter) const;
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void paintRubberBand(QPainter* painter) const;
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};
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} // qpdfview
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#endif // PAGEITEM_H
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