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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.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QGRAPHICSVIEW_P_H
#define QGRAPHICSVIEW_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qgraphicsview.h"
#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW
#include <QtGui/qevent.h>
#include <QtCore/qcoreapplication.h>
#include "qgraphicssceneevent.h"
#include <QtGui/qstyleoption.h>
#include <private/qabstractscrollarea_p.h>
QT_BEGIN_NAMESPACE
class Q_GUI_EXPORT QGraphicsViewPrivate : public QAbstractScrollAreaPrivate
{
Q_DECLARE_PUBLIC(QGraphicsView)
public:
QGraphicsViewPrivate();
void recalculateContentSize();
void centerView(QGraphicsView::ViewportAnchor anchor);
QPainter::RenderHints renderHints;
QGraphicsView::DragMode dragMode;
bool sceneInteractionAllowed;
QRectF sceneRect;
bool hasSceneRect;
void updateLastCenterPoint();
bool connectedToScene;
qint64 horizontalScroll() const;
qint64 verticalScroll() const;
QRectF mapRectToScene(const QRect &rect) const;
QRectF mapRectFromScene(const QRectF &rect) const;
QPointF mousePressItemPoint;
QPointF mousePressScenePoint;
QPoint mousePressViewPoint;
QPoint mousePressScreenPoint;
QPointF lastMouseMoveScenePoint;
QPoint lastMouseMoveScreenPoint;
QPoint dirtyScrollOffset;
Qt::MouseButton mousePressButton;
QTransform matrix;
bool identityMatrix;
qint64 scrollX, scrollY;
bool dirtyScroll;
void updateScroll();
bool accelerateScrolling;
qreal leftIndent;
qreal topIndent;
// Replaying mouse events
QMouseEvent lastMouseEvent;
bool useLastMouseEvent;
void replayLastMouseEvent();
void storeMouseEvent(QMouseEvent *event);
void mouseMoveEventHandler(QMouseEvent *event);
QPointF lastCenterPoint;
bool keepLastCenterPoint;
Qt::Alignment alignment;
bool transforming;
QGraphicsView::ViewportAnchor transformationAnchor;
QGraphicsView::ViewportAnchor resizeAnchor;
QGraphicsView::ViewportUpdateMode viewportUpdateMode;
QGraphicsView::OptimizationFlags optimizationFlags;
QPointer<QGraphicsScene> scene;
#ifndef QT_NO_RUBBERBAND
QRect rubberBandRect;
QRegion rubberBandRegion(const QWidget *widget, const QRect &rect) const;
bool rubberBanding;
Qt::ItemSelectionMode rubberBandSelectionMode;
#endif
bool handScrolling;
int handScrollMotions;
QGraphicsView::CacheMode cacheMode;
QVector<QStyleOptionGraphicsItem> styleOptions;
bool mustAllocateStyleOptions;
QStyleOptionGraphicsItem *allocStyleOptionsArray(int numItems);
void freeStyleOptionsArray(QStyleOptionGraphicsItem *array);
QBrush backgroundBrush;
QBrush foregroundBrush;
QPixmap backgroundPixmap;
bool mustResizeBackgroundPixmap;
QRegion backgroundPixmapExposed;
#ifndef QT_NO_CURSOR
QCursor originalCursor;
bool hasStoredOriginalCursor;
void _q_setViewportCursor(const QCursor &cursor);
void _q_unsetViewportCursor();
#endif
QGraphicsSceneDragDropEvent *lastDragDropEvent;
void storeDragDropEvent(const QGraphicsSceneDragDropEvent *event);
void populateSceneDragDropEvent(QGraphicsSceneDragDropEvent *dest,
QDropEvent *source);
QRect mapToViewRect(const QGraphicsItem *item, const QRectF &rect) const;
QRegion mapToViewRegion(const QGraphicsItem *item, const QRectF &rect) const;
bool fullUpdatePending;
QRegion dirtyRegion;
QRect dirtyBoundingRect;
void processPendingUpdates();
inline void updateAll()
{
viewport->update();
fullUpdatePending = true;
dirtyBoundingRect = QRect();
dirtyRegion = QRegion();
}
inline void dispatchPendingUpdateRequests()
{
#ifndef Q_WS_MAC
// QWidget::update() works slightly different on the Mac; it's not part of
// our backing store so it needs special threatment.
if (qt_widget_private(viewport)->paintOnScreen())
QCoreApplication::sendPostedEvents(viewport, QEvent::UpdateRequest);
else
QCoreApplication::sendPostedEvents(viewport->window(), QEvent::UpdateRequest);
#else
QCoreApplication::processEvents(QEventLoop::AllEvents | QEventLoop::ExcludeSocketNotifiers
| QEventLoop::ExcludeUserInputEvents);
#endif
}
bool updateRect(const QRect &rect);
bool updateRegion(const QRegion ®ion);
bool updateSceneSlotReimplementedChecked;
QRegion exposedRegion;
QList<QGraphicsItem *> findItems(const QRegion &exposedRegion, bool *allItems,
const QTransform &viewTransform) const;
QPointF mapToScene(const QPointF &point) const;
QRectF mapToScene(const QRectF &rect) const;
static void translateTouchEvent(QGraphicsViewPrivate *d, QTouchEvent *touchEvent);
void updateInputMethodSensitivity();
};
QT_END_NAMESPACE
#endif // QT_NO_GRAPHICSVIEW
#endif
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