qgraphicsview_p.h - mozsearch

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// Copyright (C) 2016 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

// Qt-Security score:significant reason:default

#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 <QtWidgets/private/qtwidgetsglobal_p.h>

#include "qgraphicsview.h"

#include <QtGui/private/qevent_p.h>

#include <QtCore/qcoreapplication.h>

#include "qgraphicssceneevent.h"

#include <QtWidgets/qstyleoption.h>

#include <private/qabstractscrollarea_p.h>

#include <private/qapplication_p.h>

#include <QtCore/qpointer.h>

QT_REQUIRE_CONFIG(graphicsview);

QT_BEGIN_NAMESPACE

class Q_WIDGETS_EXPORT QGraphicsViewPrivate : public QAbstractScrollAreaPrivate

    Q_DECLARE_PUBLIC(QGraphicsView)

public:

    QGraphicsViewPrivate();

    ~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();

    bool canStartScrollingAt(const QPoint &startPos) const override;

    qreal leftIndent;

    qreal topIndent;

    // Replaying mouse events

    QEventStorage<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;

    bool stereoEnabled = false; // Set in setupViewport()

    QPointer<QGraphicsScene> scene;

#if QT_CONFIG(rubberband)

    QRect rubberBandRect;

    QRegion rubberBandRegion(const QWidget *widget, const QRect &rect) const;

    void updateRubberBand(const QMouseEvent *event);

    void clearRubberBand();

    bool rubberBanding;

    Qt::ItemSelectionMode rubberBandSelectionMode;

    Qt::ItemSelectionOperation rubberBandSelectionOperation;

#endif

    int handScrollMotions;

    QGraphicsView::CacheMode cacheMode;

    QList<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);

    QTransform mapToViewTransform(const QGraphicsItem *item) const;

    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()

        if (qt_widget_private(viewport)->shouldPaintOnScreen())

            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