diff -r 000000000000 -r 1918ee327afb src/gui/graphicsview/qgraphicsscene_p.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/gui/graphicsview/qgraphicsscene_p.h Mon Jan 11 14:00:40 2010 +0000 @@ -0,0 +1,331 @@ +/**************************************************************************** +** +** Copyright (C) 2009 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 QGRAPHICSSCENE_P_H +#define QGRAPHICSSCENE_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 "qgraphicsscene.h" + +#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW + +#include "qgraphicssceneevent.h" +#include "qgraphicsview.h" +#include "qgraphicsview_p.h" +#include "qgraphicsitem_p.h" + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +QT_BEGIN_NAMESPACE + +class QGraphicsSceneIndex; +class QGraphicsView; +class QGraphicsWidget; + +class QGraphicsScenePrivate : public QObjectPrivate +{ + Q_DECLARE_PUBLIC(QGraphicsScene) +public: + QGraphicsScenePrivate(); + void init(); + + static QGraphicsScenePrivate *get(QGraphicsScene *q); + + static int changedSignalIndex; + + QGraphicsScene::ItemIndexMethod indexMethod; + QGraphicsSceneIndex *index; + + int lastItemCount; + + QRectF sceneRect; + bool hasSceneRect; + bool dirtyGrowingItemsBoundingRect; + QRectF growingItemsBoundingRect; + + void _q_emitUpdated(); + QList updatedRects; + bool updateAll; + bool calledEmitUpdated; + bool processDirtyItemsEmitted; + + QPainterPath selectionArea; + int selectionChanging; + QSet selectedItems; + QSet unpolishedItems; + QList topLevelItems; + bool needSortTopLevelItems; + bool holesInTopLevelSiblingIndex; + bool topLevelSequentialOrdering; + + QMap movingItemsInitialPositions; + void registerTopLevelItem(QGraphicsItem *item); + void unregisterTopLevelItem(QGraphicsItem *item); + void _q_updateLater(); + void _q_polishItems(); + + void _q_processDirtyItems(); + + void removeItemHelper(QGraphicsItem *item); + + QBrush backgroundBrush; + QBrush foregroundBrush; + + bool stickyFocus; + bool hasFocus; + QGraphicsItem *focusItem; + QGraphicsItem *lastFocusItem; + QGraphicsWidget *tabFocusFirst; + QGraphicsItem *activePanel; + QGraphicsItem *lastActivePanel; + int activationRefCount; + int childExplicitActivation; + void setActivePanelHelper(QGraphicsItem *item, bool duringActivationEvent); + void setFocusItemHelper(QGraphicsItem *item, Qt::FocusReason focusReason); + + QList popupWidgets; + void addPopup(QGraphicsWidget *widget); + void removePopup(QGraphicsWidget *widget, bool itemIsDying = false); + + QGraphicsItem *lastMouseGrabberItem; + bool lastMouseGrabberItemHasImplicitMouseGrab; + QList mouseGrabberItems; + void grabMouse(QGraphicsItem *item, bool implicit = false); + void ungrabMouse(QGraphicsItem *item, bool itemIsDying = false); + void clearMouseGrabber(); + + QList keyboardGrabberItems; + void grabKeyboard(QGraphicsItem *item); + void ungrabKeyboard(QGraphicsItem *item, bool itemIsDying = false); + void clearKeyboardGrabber(); + + QGraphicsItem *dragDropItem; + QGraphicsWidget *enterWidget; + Qt::DropAction lastDropAction; + QList cachedItemsUnderMouse; + QList hoverItems; + QPointF lastSceneMousePos; + bool allItemsIgnoreHoverEvents; + bool allItemsUseDefaultCursor; + void enableMouseTrackingOnViews(); + QMap mouseGrabberButtonDownPos; + QMap mouseGrabberButtonDownScenePos; + QMap mouseGrabberButtonDownScreenPos; + QList itemsAtPosition(const QPoint &screenPos, + const QPointF &scenePos, + QWidget *widget) const; + void storeMouseButtonsForMouseGrabber(QGraphicsSceneMouseEvent *event); + + QList views; + void addView(QGraphicsView *view); + void removeView(QGraphicsView *view); + + bool painterStateProtection; + + QMultiMap sceneEventFilters; + void installSceneEventFilter(QGraphicsItem *watched, QGraphicsItem *filter); + void removeSceneEventFilter(QGraphicsItem *watched, QGraphicsItem *filter); + bool filterDescendantEvent(QGraphicsItem *item, QEvent *event); + bool filterEvent(QGraphicsItem *item, QEvent *event); + bool sendEvent(QGraphicsItem *item, QEvent *event); + + bool dispatchHoverEvent(QGraphicsSceneHoverEvent *hoverEvent); + bool itemAcceptsHoverEvents_helper(const QGraphicsItem *item) const; + void leaveScene(); + + void cloneDragDropEvent(QGraphicsSceneDragDropEvent *dest, + QGraphicsSceneDragDropEvent *source); + void sendDragDropEvent(QGraphicsItem *item, + QGraphicsSceneDragDropEvent *dragDropEvent); + void sendHoverEvent(QEvent::Type type, QGraphicsItem *item, + QGraphicsSceneHoverEvent *hoverEvent); + void sendMouseEvent(QGraphicsSceneMouseEvent *mouseEvent); + void mousePressEventHandler(QGraphicsSceneMouseEvent *mouseEvent); + QGraphicsWidget *windowForItem(const QGraphicsItem *item) const; + + bool sortCacheEnabled; // for compatibility + + void drawItemHelper(QGraphicsItem *item, QPainter *painter, + const QStyleOptionGraphicsItem *option, QWidget *widget, + bool painterStateProtection); + + void drawItems(QPainter *painter, const QTransform *const viewTransform, + QRegion *exposedRegion, QWidget *widget); + + void drawSubtreeRecursive(QGraphicsItem *item, QPainter *painter, const QTransform *const, + QRegion *exposedRegion, QWidget *widget, qreal parentOpacity = qreal(1.0), + const QTransform *const effectTransform = 0); + void draw(QGraphicsItem *, QPainter *, const QTransform *const, const QTransform *const, + QRegion *, QWidget *, qreal, const QTransform *const, bool, bool); + + void markDirty(QGraphicsItem *item, const QRectF &rect = QRectF(), bool invalidateChildren = false, + bool maybeDirtyClipPath = false, bool force = false, bool ignoreOpacity = false, + bool removingItemFromScene = false); + void processDirtyItemsRecursive(QGraphicsItem *item, bool dirtyAncestorContainsChildren = false, + qreal parentOpacity = qreal(1.0)); + + inline void resetDirtyItem(QGraphicsItem *item, bool recursive = false) + { + Q_ASSERT(item); + item->d_ptr->dirty = 0; + item->d_ptr->paintedViewBoundingRectsNeedRepaint = 0; + item->d_ptr->geometryChanged = 0; + if (!item->d_ptr->dirtyChildren) + recursive = false; + item->d_ptr->dirtyChildren = 0; + item->d_ptr->needsRepaint = QRectF(); + item->d_ptr->allChildrenDirty = 0; + item->d_ptr->fullUpdatePending = 0; + item->d_ptr->ignoreVisible = 0; + item->d_ptr->ignoreOpacity = 0; + QGraphicsEffect::ChangeFlags flags; + if (item->d_ptr->notifyBoundingRectChanged) { + flags |= QGraphicsEffect::SourceBoundingRectChanged; + item->d_ptr->notifyBoundingRectChanged = 0; + } + if (item->d_ptr->notifyInvalidated) { + flags |= QGraphicsEffect::SourceInvalidated; + item->d_ptr->notifyInvalidated = 0; + } + if (recursive) { + for (int i = 0; i < item->d_ptr->children.size(); ++i) + resetDirtyItem(item->d_ptr->children.at(i), recursive); + } + if (flags && item->d_ptr->graphicsEffect) + item->d_ptr->graphicsEffect->sourceChanged(flags); + } + + inline void ensureSortedTopLevelItems() + { + if (needSortTopLevelItems) { + qSort(topLevelItems.begin(), topLevelItems.end(), qt_notclosestLeaf); + needSortTopLevelItems = false; + } + } + + void ensureSequentialTopLevelSiblingIndexes(); + + QStyle *style; + QFont font; + void setFont_helper(const QFont &font); + void resolveFont(); + void updateFont(const QFont &font); + QPalette palette; + void setPalette_helper(const QPalette &palette); + void resolvePalette(); + void updatePalette(const QPalette &palette); + + QStyleOptionGraphicsItem styleOptionTmp; + + QMap sceneCurrentTouchPoints; + QMap itemForTouchPointId; + static void updateTouchPointsForItem(QGraphicsItem *item, QTouchEvent *touchEvent); + int findClosestTouchPointId(const QPointF &scenePos); + void touchEventHandler(QTouchEvent *touchEvent); + bool sendTouchBeginEvent(QGraphicsItem *item, QTouchEvent *touchEvent); + bool allItemsIgnoreTouchEvents; + void enableTouchEventsOnViews(); + + QHash gestureTargets; + void gestureEventHandler(QGestureEvent *event); + void getGestureTargets(const QSet &gestures, QWidget *viewport, + QMap *conflictedGestures, + QList > *conflictedItems, + QHash *normalGestures); + + void updateInputMethodSensitivityInViews(); + + QList modalPanels; + void enterModal(QGraphicsItem *item, + QGraphicsItem::PanelModality panelModality = QGraphicsItem::NonModal); + void leaveModal(QGraphicsItem *item); +}; + +// QRectF::intersects() returns false always if either the source or target +// rectangle's width or height are 0. This works around that problem. +static inline void _q_adjustRect(QRectF *rect) +{ + Q_ASSERT(rect); + if (!rect->width()) + rect->adjust(qreal(-0.00001), 0, qreal(0.00001), 0); + if (!rect->height()) + rect->adjust(0, qreal(-0.00001), 0, qreal(0.00001)); +} + +static inline QRectF adjustedItemBoundingRect(const QGraphicsItem *item) +{ + Q_ASSERT(item); + QRectF boundingRect(item->boundingRect()); + _q_adjustRect(&boundingRect); + return boundingRect; +} + +static inline QRectF adjustedItemEffectiveBoundingRect(const QGraphicsItem *item) +{ + Q_ASSERT(item); + QRectF boundingRect(QGraphicsItemPrivate::get(item)->effectiveBoundingRect()); + _q_adjustRect(&boundingRect); + return boundingRect; +} + +QT_END_NAMESPACE + +#endif // QT_NO_GRAPHICSVIEW + +#endif