--- /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 <private/qobject_p.h>
+#include <QtCore/qbitarray.h>
+#include <QtCore/qlist.h>
+#include <QtCore/qmap.h>
+#include <QtCore/qset.h>
+#include <QtGui/qfont.h>
+#include <QtGui/qpalette.h>
+#include <QtGui/qstyle.h>
+#include <QtGui/qstyleoption.h>
+
+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<QRectF> updatedRects;
+ bool updateAll;
+ bool calledEmitUpdated;
+ bool processDirtyItemsEmitted;
+
+ QPainterPath selectionArea;
+ int selectionChanging;
+ QSet<QGraphicsItem *> selectedItems;
+ QSet<QGraphicsItem *> unpolishedItems;
+ QList<QGraphicsItem *> topLevelItems;
+ bool needSortTopLevelItems;
+ bool holesInTopLevelSiblingIndex;
+ bool topLevelSequentialOrdering;
+
+ QMap<QGraphicsItem *, QPointF> 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<QGraphicsWidget *> popupWidgets;
+ void addPopup(QGraphicsWidget *widget);
+ void removePopup(QGraphicsWidget *widget, bool itemIsDying = false);
+
+ QGraphicsItem *lastMouseGrabberItem;
+ bool lastMouseGrabberItemHasImplicitMouseGrab;
+ QList<QGraphicsItem *> mouseGrabberItems;
+ void grabMouse(QGraphicsItem *item, bool implicit = false);
+ void ungrabMouse(QGraphicsItem *item, bool itemIsDying = false);
+ void clearMouseGrabber();
+
+ QList<QGraphicsItem *> keyboardGrabberItems;
+ void grabKeyboard(QGraphicsItem *item);
+ void ungrabKeyboard(QGraphicsItem *item, bool itemIsDying = false);
+ void clearKeyboardGrabber();
+
+ QGraphicsItem *dragDropItem;
+ QGraphicsWidget *enterWidget;
+ Qt::DropAction lastDropAction;
+ QList<QGraphicsItem *> cachedItemsUnderMouse;
+ QList<QGraphicsItem *> hoverItems;
+ QPointF lastSceneMousePos;
+ bool allItemsIgnoreHoverEvents;
+ bool allItemsUseDefaultCursor;
+ void enableMouseTrackingOnViews();
+ QMap<Qt::MouseButton, QPointF> mouseGrabberButtonDownPos;
+ QMap<Qt::MouseButton, QPointF> mouseGrabberButtonDownScenePos;
+ QMap<Qt::MouseButton, QPoint> mouseGrabberButtonDownScreenPos;
+ QList<QGraphicsItem *> itemsAtPosition(const QPoint &screenPos,
+ const QPointF &scenePos,
+ QWidget *widget) const;
+ void storeMouseButtonsForMouseGrabber(QGraphicsSceneMouseEvent *event);
+
+ QList<QGraphicsView *> views;
+ void addView(QGraphicsView *view);
+ void removeView(QGraphicsView *view);
+
+ bool painterStateProtection;
+
+ QMultiMap<QGraphicsItem *, QGraphicsItem *> 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<int, QTouchEvent::TouchPoint> sceneCurrentTouchPoints;
+ QMap<int, QGraphicsItem *> 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<QGesture *, QGraphicsObject *> gestureTargets;
+ void gestureEventHandler(QGestureEvent *event);
+ void getGestureTargets(const QSet<QGesture *> &gestures, QWidget *viewport,
+ QMap<Qt::GestureType, QGesture *> *conflictedGestures,
+ QList<QList<QGraphicsObject *> > *conflictedItems,
+ QHash<QGesture *, QGraphicsObject *> *normalGestures);
+
+ void updateInputMethodSensitivityInViews();
+
+ QList<QGraphicsItem *> 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