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Diffstat (limited to 'src/widgets/graphicsview/qgraphicsview_p.h')
| -rw-r--r-- | src/widgets/graphicsview/qgraphicsview_p.h | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/src/widgets/graphicsview/qgraphicsview_p.h b/src/widgets/graphicsview/qgraphicsview_p.h new file mode 100644 index 0000000000..0744ab7357 --- /dev/null +++ b/src/widgets/graphicsview/qgraphicsview_p.h @@ -0,0 +1,233 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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 <QtWidgets/qstyleoption.h> +#include <private/qabstractscrollarea_p.h> +#include <private/qapplication_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; + + 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; + 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; + bool rubberBanding; + Qt::ItemSelectionMode rubberBandSelectionMode; +#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_WS_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_WS_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 |