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tqtinterface/qtinterface/qt4/Qt/qgraphicsview.h

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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 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 the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#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, // obsolete
DontSavePainterState = 0x2,
DontAdjustForAntialiasing = 0x4,
IndirectPainting = 0x8
};
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;
bool isTransformed() 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:
QGraphicsView(QGraphicsViewPrivate &, QWidget *parent = 0);
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;
friend class QGraphicsScenePrivate;
friend class QGraphicsItemPrivate;
};
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