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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtWidgets module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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)
#include <QtGui/qevent.h>
#include <QtCore/qcoreapplication.h>
#include "qgraphicssceneevent.h"
#include <QtWidgets/qstyleoption.h>
#include <private/qabstractscrollarea_p.h>
#include <private/qapplication_p.h>
QT_BEGIN_NAMESPACE
class Q_WIDGETS_EXPORT QGraphicsViewPrivate : public QAbstractScrollAreaPrivate
{
Q_DECLARE_PUBLIC(QGraphicsView)
public:
QGraphicsViewPrivate();
void recalculateContentSize();
void centerView(QGraphicsView::ViewportAnchor anchor);
QPainter::RenderHints renderHints;
QGraphicsView::DragMode dragMode;
quint32 sceneInteractionAllowed : 1;
quint32 hasSceneRect : 1;
quint32 connectedToScene : 1;
quint32 useLastMouseEvent : 1;
quint32 identityMatrix : 1;
quint32 dirtyScroll : 1;
quint32 accelerateScrolling : 1;
quint32 keepLastCenterPoint : 1;
quint32 transforming : 1;
quint32 handScrolling : 1;
quint32 mustAllocateStyleOptions : 1;
quint32 mustResizeBackgroundPixmap : 1;
quint32 fullUpdatePending : 1;
quint32 hasUpdateClip : 1;
quint32 padding : 18;
QRectF sceneRect;
void updateLastCenterPoint();
qint64 horizontalScroll() const;
qint64 verticalScroll() const;
QRectF mapRectToScene(const QRect &rect) const;
QRectF mapRectFromScene(const QRectF &rect) const;
QRect updateClip;
QPointF mousePressItemPoint;
QPointF mousePressScenePoint;
QPoint mousePressViewPoint;
QPoint mousePressScreenPoint;
QPointF lastMouseMoveScenePoint;
QPointF lastRubberbandScenePoint;
QPoint lastMouseMoveScreenPoint;
QPoint dirtyScrollOffset;
Qt::MouseButton mousePressButton;
QTransform matrix;
qint64 scrollX, scrollY;
void updateScroll();
qreal leftIndent;
qreal topIndent;
// Replaying mouse events
QMouseEvent lastMouseEvent;
void replayLastMouseEvent();
void storeMouseEvent(QMouseEvent *event);
void mouseMoveEventHandler(QMouseEvent *event);
QPointF lastCenterPoint;
Qt::Alignment alignment;
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;
void updateRubberBand(const QMouseEvent *event);
bool rubberBanding;
Qt::ItemSelectionMode rubberBandSelectionMode;
Qt::ItemSelectionOperation rubberBandSelectionOperation;
#endif
int handScrollMotions;
QGraphicsView::CacheMode cacheMode;
QVector<QStyleOptionGraphicsItem> styleOptions;
QStyleOptionGraphicsItem *allocStyleOptionsArray(int numItems);
void freeStyleOptionsArray(QStyleOptionGraphicsItem *array);
QBrush backgroundBrush;
QBrush foregroundBrush;
QPixmap backgroundPixmap;
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;
QRegion dirtyRegion;
QRect dirtyBoundingRect;
void processPendingUpdates();
inline void updateAll()
{
viewport->update();
fullUpdatePending = true;
dirtyBoundingRect = QRect();
dirtyRegion = QRegion();
}
inline void dispatchPendingUpdateRequests()
{
#ifdef Q_DEAD_CODE_FROM_QT4_MAC
// QWidget::update() works slightly different on the Mac without the raster engine;
// it's not part of our backing store so it needs special threatment.
if (QApplicationPrivate::graphics_system_name != QLatin1String("raster")) {
// At this point either HIViewSetNeedsDisplay (Carbon) or setNeedsDisplay: YES (Cocoa)
// is called, which means there's a pending update request. We want to dispatch it
// now because otherwise graphics view updates would require two
// round-trips in the event loop before the item is painted.
extern void qt_mac_dispatchPendingUpdateRequests(QWidget *);
qt_mac_dispatchPendingUpdateRequests(viewport->window());
} else
#endif // !Q_DEAD_CODE_FROM_QT4_MAC
{
if (qt_widget_private(viewport)->paintOnScreen())
QCoreApplication::sendPostedEvents(viewport, QEvent::UpdateRequest);
else
QCoreApplication::sendPostedEvents(viewport->window(), QEvent::UpdateRequest);
}
}
void setUpdateClip(QGraphicsItem *);
inline bool updateRectF(const QRectF &rect)
{
if (rect.isEmpty())
return false;
if (optimizationFlags & QGraphicsView::DontAdjustForAntialiasing)
return updateRect(rect.toAlignedRect().adjusted(-1, -1, 1, 1));
return updateRect(rect.toAlignedRect().adjusted(-2, -2, 2, 2));
}
bool updateRect(const QRect &rect);
bool updateRegion(const QRectF &rect, const QTransform &xform);
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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