qgraphicsview.h
上传用户:detong
上传日期:2022-06-22
资源大小:20675k
文件大小:12k
- /****************************************************************************
- **
- ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
- ** Contact: Qt Software Information (qt-info@nokia.com)
- **
- ** This file is part of the QtGui module of the Qt Toolkit.
- **
- ** Commercial Usage
- ** Licensees holding valid Qt Commercial licenses may use this file in
- ** accordance with the Qt Commercial License Agreement provided with the
- ** Software or, alternatively, in accordance with the terms contained in
- ** a written agreement between you and Nokia.
- **
- **
- ** GNU General Public License Usage
- ** Alternatively, this file may be used under the terms of the GNU
- ** General Public License versions 2.0 or 3.0 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 GNU General Public Licensing requirements will be met:
- ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
- ** http://www.gnu.org/copyleft/gpl.html. In addition, as a special
- ** exception, Nokia gives you certain additional rights. These rights
- ** are described in the Nokia Qt GPL Exception version 1.3, included in
- ** the file GPL_EXCEPTION.txt in this package.
- **
- ** Qt for Windows(R) Licensees
- ** As a special exception, Nokia, as the sole copyright holder for Qt
- ** Designer, grants users of the Qt/Eclipse Integration plug-in the
- ** right for the Qt/Eclipse Integration to link to functionality
- ** provided by Qt Designer and its related libraries.
- **
- ** If you are unsure which license is appropriate for your use, please
- ** contact the sales department at qt-sales@nokia.com.
- **
- ****************************************************************************/
- #ifndef QGRAPHICSVIEW_H
- #define QGRAPHICSVIEW_H
- #include <QtCore/qmetatype.h>
- #include <QtGui/qpainter.h>
- #include <QtGui/qscrollarea.h>
- #include <QtGui/qgraphicsscene.h>
- QT_BEGIN_HEADER
- QT_BEGIN_NAMESPACE
- QT_MODULE(Gui)
- #if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW
- class QGraphicsItem;
- class QPainterPath;
- class QPolygonF;
- class QStyleOptionGraphicsItem;
- class QGraphicsViewPrivate;
- class Q_GUI_EXPORT QGraphicsView : public QAbstractScrollArea
- {
- Q_OBJECT
- Q_FLAGS(QPainter::RenderHints CacheMode OptimizationFlags)
- Q_ENUMS(ViewportAnchor DragMode ViewportUpdateMode)
- Q_PROPERTY(QBrush backgroundBrush READ backgroundBrush WRITE setBackgroundBrush)
- Q_PROPERTY(QBrush foregroundBrush READ foregroundBrush WRITE setForegroundBrush)
- Q_PROPERTY(bool interactive READ isInteractive WRITE setInteractive)
- Q_PROPERTY(QRectF sceneRect READ sceneRect WRITE setSceneRect)
- Q_PROPERTY(Qt::Alignment alignment READ alignment WRITE setAlignment)
- Q_PROPERTY(QPainter::RenderHints renderHints READ renderHints WRITE setRenderHints)
- Q_PROPERTY(DragMode dragMode READ dragMode WRITE setDragMode)
- Q_PROPERTY(CacheMode cacheMode READ cacheMode WRITE setCacheMode)
- Q_PROPERTY(ViewportAnchor transformationAnchor READ transformationAnchor WRITE setTransformationAnchor)
- Q_PROPERTY(ViewportAnchor resizeAnchor READ resizeAnchor WRITE setResizeAnchor)
- Q_PROPERTY(ViewportUpdateMode viewportUpdateMode READ viewportUpdateMode WRITE setViewportUpdateMode)
- #ifndef QT_NO_RUBBERBAND
- Q_PROPERTY(Qt::ItemSelectionMode rubberBandSelectionMode READ rubberBandSelectionMode WRITE setRubberBandSelectionMode)
- #endif
- Q_PROPERTY(OptimizationFlags optimizationFlags READ optimizationFlags WRITE setOptimizationFlags)
- public:
- enum ViewportAnchor {
- NoAnchor,
- AnchorViewCenter,
- AnchorUnderMouse
- };
- enum CacheModeFlag {
- CacheNone = 0x0,
- CacheBackground = 0x1
- };
- Q_DECLARE_FLAGS(CacheMode, CacheModeFlag)
- enum DragMode {
- NoDrag,
- ScrollHandDrag,
- RubberBandDrag
- };
- enum ViewportUpdateMode {
- FullViewportUpdate,
- MinimalViewportUpdate,
- SmartViewportUpdate,
- NoViewportUpdate,
- BoundingRectViewportUpdate
- };
- enum OptimizationFlag {
- DontClipPainter = 0x1,
- DontSavePainterState = 0x2,
- DontAdjustForAntialiasing = 0x4
- };
- Q_DECLARE_FLAGS(OptimizationFlags, OptimizationFlag)
- QGraphicsView(QWidget *parent = 0);
- QGraphicsView(QGraphicsScene *scene, QWidget *parent = 0);
- ~QGraphicsView();
- QSize sizeHint() const;
- QPainter::RenderHints renderHints() const;
- void setRenderHint(QPainter::RenderHint hint, bool enabled = true);
- void setRenderHints(QPainter::RenderHints hints);
- Qt::Alignment alignment() const;
- void setAlignment(Qt::Alignment alignment);
- ViewportAnchor transformationAnchor() const;
- void setTransformationAnchor(ViewportAnchor anchor);
- ViewportAnchor resizeAnchor() const;
- void setResizeAnchor(ViewportAnchor anchor);
- ViewportUpdateMode viewportUpdateMode() const;
- void setViewportUpdateMode(ViewportUpdateMode mode);
- OptimizationFlags optimizationFlags() const;
- void setOptimizationFlag(OptimizationFlag flag, bool enabled = true);
- void setOptimizationFlags(OptimizationFlags flags);
- DragMode dragMode() const;
- void setDragMode(DragMode mode);
- #ifndef QT_NO_RUBBERBAND
- Qt::ItemSelectionMode rubberBandSelectionMode() const;
- void setRubberBandSelectionMode(Qt::ItemSelectionMode mode);
- #endif
- CacheMode cacheMode() const;
- void setCacheMode(CacheMode mode);
- void resetCachedContent();
- bool isInteractive() const;
- void setInteractive(bool allowed);
- QGraphicsScene *scene() const;
- void setScene(QGraphicsScene *scene);
- QRectF sceneRect() const;
- void setSceneRect(const QRectF &rect);
- inline void setSceneRect(qreal x, qreal y, qreal w, qreal h);
- QMatrix matrix() const;
- void setMatrix(const QMatrix &matrix, bool combine = false);
- void resetMatrix();
- QTransform transform() const;
- QTransform viewportTransform() const;
- void setTransform(const QTransform &matrix, bool combine = false);
- void resetTransform();
- void rotate(qreal angle);
- void scale(qreal sx, qreal sy);
- void shear(qreal sh, qreal sv);
- void translate(qreal dx, qreal dy);
- void centerOn(const QPointF &pos);
- inline void centerOn(qreal x, qreal y);
- void centerOn(const QGraphicsItem *item);
- void ensureVisible(const QRectF &rect, int xmargin = 50, int ymargin = 50);
- inline void ensureVisible(qreal x, qreal y, qreal w, qreal h, int xmargin = 50, int ymargin = 50);
- void ensureVisible(const QGraphicsItem *item, int xmargin = 50, int ymargin = 50);
- void fitInView(const QRectF &rect, Qt::AspectRatioMode aspectRadioMode = Qt::IgnoreAspectRatio);
- inline void fitInView(qreal x, qreal y, qreal w, qreal h,
- Qt::AspectRatioMode aspectRadioMode = Qt::IgnoreAspectRatio);
- void fitInView(const QGraphicsItem *item,
- Qt::AspectRatioMode aspectRadioMode = Qt::IgnoreAspectRatio);
- void render(QPainter *painter, const QRectF &target = QRectF(), const QRect &source = QRect(),
- Qt::AspectRatioMode aspectRatioMode = Qt::KeepAspectRatio);
- QList<QGraphicsItem *> items() const;
- QList<QGraphicsItem *> items(const QPoint &pos) const;
- inline QList<QGraphicsItem *> items(int x, int y) const;
- QList<QGraphicsItem *> items(const QRect &rect, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const;
- inline QList<QGraphicsItem *> items(int x, int y, int w, int h, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const;
- QList<QGraphicsItem *> items(const QPolygon &polygon, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const;
- QList<QGraphicsItem *> items(const QPainterPath &path, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const;
- QGraphicsItem *itemAt(const QPoint &pos) const;
- inline QGraphicsItem *itemAt(int x, int y) const;
- QPointF mapToScene(const QPoint &point) const;
- QPolygonF mapToScene(const QRect &rect) const;
- QPolygonF mapToScene(const QPolygon &polygon) const;
- QPainterPath mapToScene(const QPainterPath &path) const;
- QPoint mapFromScene(const QPointF &point) const;
- QPolygon mapFromScene(const QRectF &rect) const;
- QPolygon mapFromScene(const QPolygonF &polygon) const;
- QPainterPath mapFromScene(const QPainterPath &path) const;
- inline QPointF mapToScene(int x, int y) const;
- inline QPolygonF mapToScene(int x, int y, int w, int h) const;
- inline QPoint mapFromScene(qreal x, qreal y) const;
- inline QPolygon mapFromScene(qreal x, qreal y, qreal w, qreal h) const;
- QVariant inputMethodQuery(Qt::InputMethodQuery query) const;
- QBrush backgroundBrush() const;
- void setBackgroundBrush(const QBrush &brush);
- QBrush foregroundBrush() const;
- void setForegroundBrush(const QBrush &brush);
- public Q_SLOTS:
- void updateScene(const QList<QRectF> &rects);
- void invalidateScene(const QRectF &rect = QRectF(), QGraphicsScene::SceneLayers layers = QGraphicsScene::AllLayers);
- void updateSceneRect(const QRectF &rect);
- protected Q_SLOTS:
- void setupViewport(QWidget *widget);
- protected:
- bool event(QEvent *event);
- bool viewportEvent(QEvent *event);
- #ifndef QT_NO_CONTEXTMENU
- void contextMenuEvent(QContextMenuEvent *event);
- #endif
- void dragEnterEvent(QDragEnterEvent *event);
- void dragLeaveEvent(QDragLeaveEvent *event);
- void dragMoveEvent(QDragMoveEvent *event);
- void dropEvent(QDropEvent *event);
- void focusInEvent(QFocusEvent *event);
- bool focusNextPrevChild(bool next);
- void focusOutEvent(QFocusEvent *event);
- void keyPressEvent(QKeyEvent *event);
- void keyReleaseEvent(QKeyEvent *event);
- void mouseDoubleClickEvent(QMouseEvent *event);
- void mousePressEvent(QMouseEvent *event);
- void mouseMoveEvent(QMouseEvent *event);
- void mouseReleaseEvent(QMouseEvent *event);
- #ifndef QT_NO_WHEELEVENT
- void wheelEvent(QWheelEvent *event);
- #endif
- void paintEvent(QPaintEvent *event);
- void resizeEvent(QResizeEvent *event);
- void scrollContentsBy(int dx, int dy);
- void showEvent(QShowEvent *event);
- void inputMethodEvent(QInputMethodEvent *event);
- virtual void drawBackground(QPainter *painter, const QRectF &rect);
- virtual void drawForeground(QPainter *painter, const QRectF &rect);
- virtual void drawItems(QPainter *painter, int numItems,
- QGraphicsItem *items[],
- const QStyleOptionGraphicsItem options[]);
- private:
- Q_DECLARE_PRIVATE(QGraphicsView)
- Q_DISABLE_COPY(QGraphicsView)
- #ifndef QT_NO_CURSOR
- Q_PRIVATE_SLOT(d_func(), void _q_setViewportCursor(const QCursor &))
- Q_PRIVATE_SLOT(d_func(), void _q_unsetViewportCursor())
- #endif
- friend class QGraphicsSceneWidget;
- friend class QGraphicsScene;
- };
- Q_DECLARE_OPERATORS_FOR_FLAGS(QGraphicsView::CacheMode)
- Q_DECLARE_OPERATORS_FOR_FLAGS(QGraphicsView::OptimizationFlags)
- inline void QGraphicsView::setSceneRect(qreal ax, qreal ay, qreal aw, qreal ah)
- { setSceneRect(QRectF(ax, ay, aw, ah)); }
- inline void QGraphicsView::centerOn(qreal ax, qreal ay)
- { centerOn(QPointF(ax, ay)); }
- inline void QGraphicsView::ensureVisible(qreal ax, qreal ay, qreal aw, qreal ah, int xmargin, int ymargin)
- { ensureVisible(QRectF(ax, ay, aw, ah), xmargin, ymargin); }
- inline void QGraphicsView::fitInView(qreal ax, qreal ay, qreal w, qreal h, Qt::AspectRatioMode mode)
- { fitInView(QRectF(ax, ay, w, h), mode); }
- inline QList<QGraphicsItem *> QGraphicsView::items(int ax, int ay) const
- { return items(QPoint(ax, ay)); }
- inline QList<QGraphicsItem *> QGraphicsView::items(int ax, int ay, int w, int h, Qt::ItemSelectionMode mode) const
- { return items(QRect(ax, ay, w, h), mode); }
- inline QGraphicsItem *QGraphicsView::itemAt(int ax, int ay) const
- { return itemAt(QPoint(ax, ay)); }
- inline QPointF QGraphicsView::mapToScene(int ax, int ay) const
- { return mapToScene(QPoint(ax, ay)); }
- inline QPolygonF QGraphicsView::mapToScene(int ax, int ay, int w, int h) const
- { return mapToScene(QRect(ax, ay, w, h)); }
- inline QPoint QGraphicsView::mapFromScene(qreal ax, qreal ay) const
- { return mapFromScene(QPointF(ax, ay)); }
- inline QPolygon QGraphicsView::mapFromScene(qreal ax, qreal ay, qreal w, qreal h) const
- { return mapFromScene(QRectF(ax, ay, w, h)); }
- #endif // QT_NO_GRAPHICSVIEW
- QT_END_NAMESPACE
- QT_END_HEADER
- #endif // QGRAPHICSVIEW_H