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tqtinterface/qtinterface/qt4/Qt/qgraphicsscene.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 QGRAPHICSSCENE_H
#define QGRAPHICSSCENE_H
#include <QtCore/qobject.h>
#include <QtCore/qpoint.h>
#include <QtCore/qrect.h>
#include <QtGui/qbrush.h>
#include <QtGui/qfont.h>
#include <QtGui/qtransform.h>
#include <QtGui/qmatrix.h>
#include <QtGui/qpen.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Gui)
#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW
template<typename T> class QList;
class QFocusEvent;
class QFont;
class QFontMetrics;
class QGraphicsEllipseItem;
class QGraphicsItem;
class QGraphicsItemGroup;
class QGraphicsLineItem;
class QGraphicsPathItem;
class QGraphicsPixmapItem;
class QGraphicsPolygonItem;
class QGraphicsProxyWidget;
class QGraphicsRectItem;
class QGraphicsSceneContextMenuEvent;
class QGraphicsSceneDragDropEvent;
class QGraphicsSceneEvent;
class QGraphicsSceneHelpEvent;
class QGraphicsSceneHoverEvent;
class QGraphicsSceneMouseEvent;
class QGraphicsSceneWheelEvent;
class QGraphicsSimpleTextItem;
class QGraphicsTextItem;
class QGraphicsView;
class QGraphicsWidget;
class QGraphicsSceneIndex;
class QHelpEvent;
class QInputMethodEvent;
class QKeyEvent;
class QLineF;
class QPainterPath;
class QPixmap;
class QPointF;
class QPolygonF;
class QRectF;
class QSizeF;
class QStyle;
class QStyleOptionGraphicsItem;
class QGraphicsScenePrivate;
class Q_GUI_EXPORT QGraphicsScene : public QObject
{
Q_OBJECT
Q_PROPERTY(QBrush backgroundBrush READ backgroundBrush WRITE setBackgroundBrush)
Q_PROPERTY(QBrush foregroundBrush READ foregroundBrush WRITE setForegroundBrush)
Q_PROPERTY(ItemIndexMethod itemIndexMethod READ itemIndexMethod WRITE setItemIndexMethod)
Q_PROPERTY(QRectF sceneRect READ sceneRect WRITE setSceneRect)
Q_PROPERTY(int bspTreeDepth READ bspTreeDepth WRITE setBspTreeDepth)
Q_PROPERTY(QPalette palette READ palette WRITE setPalette)
Q_PROPERTY(QFont font READ font WRITE setFont)
Q_PROPERTY(bool sortCacheEnabled READ isSortCacheEnabled WRITE setSortCacheEnabled)
Q_PROPERTY(bool stickyFocus READ stickyFocus WRITE setStickyFocus)
public:
enum ItemIndexMethod {
BspTreeIndex,
NoIndex = -1
};
enum SceneLayer {
ItemLayer = 0x1,
BackgroundLayer = 0x2,
ForegroundLayer = 0x4,
AllLayers = 0xffff
};
Q_DECLARE_FLAGS(SceneLayers, SceneLayer)
QGraphicsScene(QObject *parent = 0);
QGraphicsScene(const QRectF &sceneRect, QObject *parent = 0);
QGraphicsScene(qreal x, qreal y, qreal width, qreal height, QObject *parent = 0);
virtual ~QGraphicsScene();
QRectF sceneRect() const;
inline qreal width() const { return sceneRect().width(); }
inline qreal height() const { return sceneRect().height(); }
void setSceneRect(const QRectF &rect);
inline void setSceneRect(qreal x, qreal y, qreal w, qreal h)
{ setSceneRect(QRectF(x, y, w, h)); }
void render(QPainter *painter,
const QRectF &target = QRectF(), const QRectF &source = QRectF(),
Qt::AspectRatioMode aspectRatioMode = Qt::KeepAspectRatio);
ItemIndexMethod itemIndexMethod() const;
void setItemIndexMethod(ItemIndexMethod method);
bool isSortCacheEnabled() const;
void setSortCacheEnabled(bool enabled);
int bspTreeDepth() const;
void setBspTreeDepth(int depth);
QRectF itemsBoundingRect() const;
QList<QGraphicsItem *> items() const;
QList<QGraphicsItem *> items(Qt::SortOrder order) const; // ### Qt 5: unify
QList<QGraphicsItem *> items(const QPointF &pos, Qt::ItemSelectionMode mode, Qt::SortOrder order, const QTransform &deviceTransform = QTransform()) const;
QList<QGraphicsItem *> items(const QRectF &rect, Qt::ItemSelectionMode mode, Qt::SortOrder order, const QTransform &deviceTransform = QTransform()) const;
QList<QGraphicsItem *> items(const QPolygonF &polygon, Qt::ItemSelectionMode mode, Qt::SortOrder order, const QTransform &deviceTransform = QTransform()) const;
QList<QGraphicsItem *> items(const QPainterPath &path, Qt::ItemSelectionMode mode, Qt::SortOrder order, const QTransform &deviceTransform = QTransform()) const;
QList<QGraphicsItem *> items(const QPointF &pos) const; // ### obsolete
QList<QGraphicsItem *> items(const QRectF &rect, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const; // ### obsolete
QList<QGraphicsItem *> items(const QPolygonF &polygon, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const; // ### obsolete
QList<QGraphicsItem *> items(const QPainterPath &path, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const; // ### obsolete
QList<QGraphicsItem *> collidingItems(const QGraphicsItem *item, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const;
QGraphicsItem *itemAt(const QPointF &pos) const; // ### obsolete
QGraphicsItem *itemAt(const QPointF &pos, const QTransform &deviceTransform) const;
inline QList<QGraphicsItem *> items(qreal x, qreal y, qreal w, qreal h, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const
{ return items(QRectF(x, y, w, h), mode); } // ### obsolete
inline QList<QGraphicsItem *> items(qreal x, qreal y, qreal w, qreal h, Qt::ItemSelectionMode mode, Qt::SortOrder order,
const QTransform &deviceTransform = QTransform()) const
{ return items(QRectF(x, y, w, h), mode, order, deviceTransform); }
inline QGraphicsItem *itemAt(qreal x, qreal y) const // ### obsolete
{ return itemAt(QPointF(x, y)); }
inline QGraphicsItem *itemAt(qreal x, qreal y, const QTransform &deviceTransform) const
{ return itemAt(QPointF(x, y), deviceTransform); }
QList<QGraphicsItem *> selectedItems() const;
QPainterPath selectionArea() const;
void setSelectionArea(const QPainterPath &path); // ### obsolete
void setSelectionArea(const QPainterPath &path, const QTransform &deviceTransform);
void setSelectionArea(const QPainterPath &path, Qt::ItemSelectionMode mode); // ### obsolete
void setSelectionArea(const QPainterPath &path, Qt::ItemSelectionMode mode, const QTransform &deviceTransform);
QGraphicsItemGroup *createItemGroup(const QList<QGraphicsItem *> &items);
void destroyItemGroup(QGraphicsItemGroup *group);
void addItem(QGraphicsItem *item);
QGraphicsEllipseItem *addEllipse(const QRectF &rect, const QPen &pen = QPen(), const QBrush &brush = QBrush());
QGraphicsLineItem *addLine(const QLineF &line, const QPen &pen = QPen());
QGraphicsPathItem *addPath(const QPainterPath &path, const QPen &pen = QPen(), const QBrush &brush = QBrush());
QGraphicsPixmapItem *addPixmap(const QPixmap &pixmap);
QGraphicsPolygonItem *addPolygon(const QPolygonF &polygon, const QPen &pen = QPen(), const QBrush &brush = QBrush());
QGraphicsRectItem *addRect(const QRectF &rect, const QPen &pen = QPen(), const QBrush &brush = QBrush());
QGraphicsTextItem *addText(const QString &text, const QFont &font = QFont());
QGraphicsSimpleTextItem *addSimpleText(const QString &text, const QFont &font = QFont());
QGraphicsProxyWidget *addWidget(QWidget *widget, Qt::WindowFlags wFlags = 0);
inline QGraphicsEllipseItem *addEllipse(qreal x, qreal y, qreal w, qreal h, const QPen &pen = QPen(), const QBrush &brush = QBrush())
{ return addEllipse(QRectF(x, y, w, h), pen, brush); }
inline QGraphicsLineItem *addLine(qreal x1, qreal y1, qreal x2, qreal y2, const QPen &pen = QPen())
{ return addLine(QLineF(x1, y1, x2, y2), pen); }
inline QGraphicsRectItem *addRect(qreal x, qreal y, qreal w, qreal h, const QPen &pen = QPen(), const QBrush &brush = QBrush())
{ return addRect(QRectF(x, y, w, h), pen, brush); }
void removeItem(QGraphicsItem *item);
QGraphicsItem *focusItem() const;
void setFocusItem(QGraphicsItem *item, Qt::FocusReason focusReason = Qt::OtherFocusReason);
bool hasFocus() const;
void setFocus(Qt::FocusReason focusReason = Qt::OtherFocusReason);
void clearFocus();
void setStickyFocus(bool enabled);
bool stickyFocus() const;
QGraphicsItem *mouseGrabberItem() const;
QBrush backgroundBrush() const;
void setBackgroundBrush(const QBrush &brush);
QBrush foregroundBrush() const;
void setForegroundBrush(const QBrush &brush);
virtual QVariant inputMethodQuery(Qt::InputMethodQuery query) const;
QList <QGraphicsView *> views() const;
inline void update(qreal x, qreal y, qreal w, qreal h)
{ update(QRectF(x, y, w, h)); }
inline void invalidate(qreal x, qreal y, qreal w, qreal h, SceneLayers layers = AllLayers)
{ invalidate(QRectF(x, y, w, h), layers); }
QStyle *style() const;
void setStyle(QStyle *style);
QFont font() const;
void setFont(const QFont &font);
QPalette palette() const;
void setPalette(const QPalette &palette);
bool isActive() const;
QGraphicsItem *activePanel() const;
void setActivePanel(QGraphicsItem *item);
QGraphicsWidget *activeWindow() const;
void setActiveWindow(QGraphicsWidget *widget);
bool sendEvent(QGraphicsItem *item, QEvent *event);
public Q_SLOTS:
void update(const QRectF &rect = QRectF());
void invalidate(const QRectF &rect = QRectF(), SceneLayers layers = AllLayers);
void advance();
void clearSelection();
void clear();
protected:
bool event(QEvent *event);
bool eventFilter(QObject *watched, QEvent *event);
virtual void contextMenuEvent(QGraphicsSceneContextMenuEvent *event);
virtual void dragEnterEvent(QGraphicsSceneDragDropEvent *event);
virtual void dragMoveEvent(QGraphicsSceneDragDropEvent *event);
virtual void dragLeaveEvent(QGraphicsSceneDragDropEvent *event);
virtual void dropEvent(QGraphicsSceneDragDropEvent *event);
virtual void focusInEvent(QFocusEvent *event);
virtual void focusOutEvent(QFocusEvent *event);
virtual void helpEvent(QGraphicsSceneHelpEvent *event);
virtual void keyPressEvent(QKeyEvent *event);
virtual void keyReleaseEvent(QKeyEvent *event);
virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);
virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
virtual void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event);
virtual void wheelEvent(QGraphicsSceneWheelEvent *event);
virtual 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[],
QWidget *widget = 0);
protected Q_SLOTS:
bool focusNextPrevChild(bool next);
Q_SIGNALS:
void changed(const QList<QRectF> &region);
void sceneRectChanged(const QRectF &rect);
void selectionChanged();
private:
Q_DECLARE_PRIVATE(QGraphicsScene)
Q_DISABLE_COPY(QGraphicsScene)
Q_PRIVATE_SLOT(d_func(), void _q_emitUpdated())
Q_PRIVATE_SLOT(d_func(), void _q_polishItems())
Q_PRIVATE_SLOT(d_func(), void _q_processDirtyItems())
Q_PRIVATE_SLOT(d_func(), void _q_updateScenePosDescendants())
friend class QGraphicsItem;
friend class QGraphicsItemPrivate;
friend class QGraphicsView;
friend class QGraphicsViewPrivate;
friend class QGraphicsWidget;
friend class QGraphicsWidgetPrivate;
friend class QGraphicsEffect;
friend class QGraphicsSceneIndex;
friend class QGraphicsSceneIndexPrivate;
friend class QGraphicsSceneBspTreeIndex;
friend class QGraphicsSceneBspTreeIndexPrivate;
friend class QGraphicsItemEffectSourcePrivate;
friend class QGesture;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QGraphicsScene::SceneLayers)
#endif // QT_NO_GRAPHICSVIEW
QT_END_NAMESPACE
QT_END_HEADER
#endif