source: trunk/src/gui/graphicsview/qgraphicsitem_p.h@ 603

Last change on this file since 603 was 561, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.6.1 sources.
File size: 22.4 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the QtGui module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
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18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
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24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
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28** GNU General Public License Usage
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31** Foundation and appearing in the file LICENSE.GPL included in the
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33** ensure the GNU General Public License version 3.0 requirements will be
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35**
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38** $QT_END_LICENSE$
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40****************************************************************************/
41
42#ifndef QGRAPHICSITEM_P_H
43#define QGRAPHICSITEM_P_H
44
45//
46// W A R N I N G
47// -------------
48//
49// This file is not part of the Qt API. It exists for the convenience
50// of other Qt classes. This header file may change from version to
51// version without notice, or even be removed.
52//
53// We mean it.
54//
55
56#include "qgraphicsitem.h"
57#include "qset.h"
58#include "qpixmapcache.h"
59#include <private/qgraphicsview_p.h>
60#include "qgraphicstransform.h"
61#include <private/qgraphicstransform_p.h>
62
63#include <private/qgraphicseffect_p.h>
64#include <qgraphicseffect.h>
65
66#include <QtCore/qpoint.h>
67
68#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW
69
70QT_BEGIN_NAMESPACE
71
72class QGraphicsItemPrivate;
73
74class QGraphicsItemCache
75{
76public:
77 QGraphicsItemCache() : allExposed(false) { }
78
79 // ItemCoordinateCache only
80 QRect boundingRect;
81 QSize fixedSize;
82 QPixmapCache::Key key;
83
84 // DeviceCoordinateCache only
85 struct DeviceData {
86 DeviceData() {}
87 QTransform lastTransform;
88 QPoint cacheIndent;
89 QPixmapCache::Key key;
90 };
91 QMap<QPaintDevice *, DeviceData> deviceData;
92
93 // List of logical exposed rects
94 QVector<QRectF> exposed;
95 bool allExposed;
96
97 // Empty cache
98 void purge();
99};
100
101class Q_GUI_EXPORT QGraphicsItemPrivate
102{
103 Q_DECLARE_PUBLIC(QGraphicsItem)
104public:
105 enum Extra {
106 ExtraToolTip,
107 ExtraCursor,
108 ExtraCacheData,
109 ExtraMaxDeviceCoordCacheSize,
110 ExtraBoundingRegionGranularity
111 };
112
113 enum AncestorFlag {
114 NoFlag = 0,
115 AncestorHandlesChildEvents = 0x1,
116 AncestorClipsChildren = 0x2,
117 AncestorIgnoresTransformations = 0x4,
118 AncestorFiltersChildEvents = 0x8
119 };
120
121 inline QGraphicsItemPrivate()
122 : z(0),
123 opacity(1.),
124 scene(0),
125 parent(0),
126 transformData(0),
127 graphicsEffect(0),
128 index(-1),
129 siblingIndex(-1),
130 itemDepth(-1),
131 focusProxy(0),
132 subFocusItem(0),
133 focusScopeItem(0),
134 imHints(Qt::ImhNone),
135 panelModality(QGraphicsItem::NonModal),
136 acceptedMouseButtons(0x1f),
137 visible(1),
138 explicitlyHidden(0),
139 enabled(1),
140 explicitlyDisabled(0),
141 selected(0),
142 acceptsHover(0),
143 acceptDrops(0),
144 isMemberOfGroup(0),
145 handlesChildEvents(0),
146 itemDiscovered(0),
147 hasCursor(0),
148 ancestorFlags(0),
149 cacheMode(0),
150 hasBoundingRegionGranularity(0),
151 isWidget(0),
152 dirty(0),
153 dirtyChildren(0),
154 localCollisionHack(0),
155 inSetPosHelper(0),
156 needSortChildren(1), // ### can be 0 by default?
157 allChildrenDirty(0),
158 fullUpdatePending(0),
159 flags(0),
160 dirtyChildrenBoundingRect(1),
161 paintedViewBoundingRectsNeedRepaint(0),
162 dirtySceneTransform(1),
163 geometryChanged(1),
164 inDestructor(0),
165 isObject(0),
166 ignoreVisible(0),
167 ignoreOpacity(0),
168 acceptTouchEvents(0),
169 acceptedTouchBeginEvent(0),
170 filtersDescendantEvents(0),
171 sceneTransformTranslateOnly(0),
172 notifyBoundingRectChanged(0),
173 notifyInvalidated(0),
174 mouseSetsFocus(1),
175 explicitActivate(0),
176 wantsActive(0),
177 holesInSiblingIndex(0),
178 sequentialOrdering(1),
179 updateDueToGraphicsEffect(0),
180 scenePosDescendants(0),
181 globalStackingOrder(-1),
182 q_ptr(0)
183 {
184 }
185
186 inline virtual ~QGraphicsItemPrivate()
187 { }
188
189 static const QGraphicsItemPrivate *get(const QGraphicsItem *item)
190 {
191 return item->d_ptr.data();
192 }
193 static QGraphicsItemPrivate *get(QGraphicsItem *item)
194 {
195 return item->d_ptr.data();
196 }
197
198 void updateAncestorFlag(QGraphicsItem::GraphicsItemFlag childFlag,
199 AncestorFlag flag = NoFlag, bool enabled = false, bool root = true);
200 void setIsMemberOfGroup(bool enabled);
201 void remapItemPos(QEvent *event, QGraphicsItem *item);
202 QPointF genericMapFromScene(const QPointF &pos, const QWidget *viewport) const;
203 inline bool itemIsUntransformable() const
204 {
205 return (flags & QGraphicsItem::ItemIgnoresTransformations)
206 || (ancestorFlags & AncestorIgnoresTransformations);
207 }
208
209 void combineTransformToParent(QTransform *x, const QTransform *viewTransform = 0) const;
210 void combineTransformFromParent(QTransform *x, const QTransform *viewTransform = 0) const;
211 virtual void updateSceneTransformFromParent();
212
213 // ### Qt 5: Remove. Workaround for reimplementation added after Qt 4.4.
214 virtual QVariant inputMethodQueryHelper(Qt::InputMethodQuery query) const;
215 static bool movableAncestorIsSelected(const QGraphicsItem *item);
216
217 virtual void setPosHelper(const QPointF &pos);
218 void setTransformHelper(const QTransform &transform);
219 void appendGraphicsTransform(QGraphicsTransform *t);
220 void setVisibleHelper(bool newVisible, bool explicitly, bool update = true);
221 void setEnabledHelper(bool newEnabled, bool explicitly, bool update = true);
222 bool discardUpdateRequest(bool ignoreVisibleBit = false,
223 bool ignoreDirtyBit = false, bool ignoreOpacity = false) const;
224 int depth() const;
225#ifndef QT_NO_GRAPHICSEFFECT
226 void invalidateGraphicsEffectsRecursively();
227#endif //QT_NO_GRAPHICSEFFECT
228 void invalidateDepthRecursively();
229 void resolveDepth();
230 void addChild(QGraphicsItem *child);
231 void removeChild(QGraphicsItem *child);
232 void setParentItemHelper(QGraphicsItem *parent);
233 void childrenBoundingRectHelper(QTransform *x, QRectF *rect);
234 void initStyleOption(QStyleOptionGraphicsItem *option, const QTransform &worldTransform,
235 const QRegion &exposedRegion, bool allItems = false) const;
236 QRectF effectiveBoundingRect() const;
237 QRectF sceneEffectiveBoundingRect() const;
238
239 QRectF effectiveBoundingRect(const QRectF &rect) const;
240
241 virtual void resolveFont(uint inheritedMask)
242 {
243 for (int i = 0; i < children.size(); ++i)
244 children.at(i)->d_ptr->resolveFont(inheritedMask);
245 }
246
247 virtual void resolvePalette(uint inheritedMask)
248 {
249 for (int i = 0; i < children.size(); ++i)
250 children.at(i)->d_ptr->resolveFont(inheritedMask);
251 }
252
253 virtual bool isProxyWidget() const;
254
255 inline QVariant extra(Extra type) const
256 {
257 for (int i = 0; i < extras.size(); ++i) {
258 const ExtraStruct &extra = extras.at(i);
259 if (extra.type == type)
260 return extra.value;
261 }
262 return QVariant();
263 }
264
265 inline void setExtra(Extra type, const QVariant &value)
266 {
267 int index = -1;
268 for (int i = 0; i < extras.size(); ++i) {
269 if (extras.at(i).type == type) {
270 index = i;
271 break;
272 }
273 }
274
275 if (index == -1) {
276 extras << ExtraStruct(type, value);
277 } else {
278 extras[index].value = value;
279 }
280 }
281
282 inline void unsetExtra(Extra type)
283 {
284 for (int i = 0; i < extras.size(); ++i) {
285 if (extras.at(i).type == type) {
286 extras.removeAt(i);
287 return;
288 }
289 }
290 }
291
292 struct ExtraStruct {
293 ExtraStruct(Extra type, QVariant value)
294 : type(type), value(value)
295 { }
296
297 Extra type;
298 QVariant value;
299
300 bool operator<(Extra extra) const
301 { return type < extra; }
302 };
303
304 QList<ExtraStruct> extras;
305
306 QGraphicsItemCache *maybeExtraItemCache() const;
307 QGraphicsItemCache *extraItemCache() const;
308 void removeExtraItemCache();
309
310 void ensureSceneTransformRecursive(QGraphicsItem **topMostDirtyItem);
311 inline void ensureSceneTransform()
312 {
313 QGraphicsItem *that = q_func();
314 ensureSceneTransformRecursive(&that);
315 }
316
317 inline bool hasTranslateOnlySceneTransform()
318 {
319 ensureSceneTransform();
320 return sceneTransformTranslateOnly;
321 }
322
323 inline void invalidateChildrenSceneTransform()
324 {
325 for (int i = 0; i < children.size(); ++i)
326 children.at(i)->d_ptr->dirtySceneTransform = 1;
327 }
328
329 inline qreal calcEffectiveOpacity() const
330 {
331 qreal o = opacity;
332 QGraphicsItem *p = parent;
333 int myFlags = flags;
334 while (p) {
335 int parentFlags = p->d_ptr->flags;
336
337 // If I have a parent, and I don't ignore my parent's opacity, and my
338 // parent propagates to me, then combine my local opacity with my parent's
339 // effective opacity into my effective opacity.
340 if ((myFlags & QGraphicsItem::ItemIgnoresParentOpacity)
341 || (parentFlags & QGraphicsItem::ItemDoesntPropagateOpacityToChildren)) {
342 break;
343 }
344
345 o *= p->d_ptr->opacity;
346 p = p->d_ptr->parent;
347 myFlags = parentFlags;
348 }
349 return o;
350 }
351
352 inline bool isFullyTransparent() const
353 {
354 if (opacity < 0.001)
355 return true;
356 if (!parent)
357 return false;
358
359 return calcEffectiveOpacity() < 0.001;
360 }
361
362 inline qreal effectiveOpacity() const {
363 if (!parent || !opacity)
364 return opacity;
365
366 return calcEffectiveOpacity();
367 }
368
369 inline qreal combineOpacityFromParent(qreal parentOpacity) const
370 {
371 if (parent && !(flags & QGraphicsItem::ItemIgnoresParentOpacity)
372 && !(parent->d_ptr->flags & QGraphicsItem::ItemDoesntPropagateOpacityToChildren)) {
373 return parentOpacity * opacity;
374 }
375 return opacity;
376 }
377
378 inline bool childrenCombineOpacity() const
379 {
380 if (!children.size())
381 return true;
382 if (flags & QGraphicsItem::ItemDoesntPropagateOpacityToChildren)
383 return false;
384
385 for (int i = 0; i < children.size(); ++i) {
386 if (children.at(i)->d_ptr->flags & QGraphicsItem::ItemIgnoresParentOpacity)
387 return false;
388 }
389 return true;
390 }
391
392 inline bool childrenClippedToShape() const
393 { return (flags & QGraphicsItem::ItemClipsChildrenToShape) || children.isEmpty(); }
394
395 inline bool isInvisible() const
396 {
397 return !visible || (childrenCombineOpacity() && isFullyTransparent());
398 }
399
400 void setFocusHelper(Qt::FocusReason focusReason, bool climb);
401 void setSubFocus(QGraphicsItem *rootItem = 0);
402 void clearSubFocus(QGraphicsItem *rootItem = 0);
403 void resetFocusProxy();
404 virtual void subFocusItemChange();
405
406 inline QTransform transformToParent() const;
407 inline void ensureSortedChildren();
408 static inline bool insertionOrder(QGraphicsItem *a, QGraphicsItem *b);
409 void ensureSequentialSiblingIndex();
410 inline void sendScenePosChange();
411 virtual void siblingOrderChange();
412
413 QRectF childrenBoundingRect;
414 QRectF needsRepaint;
415 QMap<QWidget *, QRect> paintedViewBoundingRects;
416 QPointF pos;
417 qreal z;
418 qreal opacity;
419 QGraphicsScene *scene;
420 QGraphicsItem *parent;
421 QList<QGraphicsItem *> children;
422 struct TransformData;
423 TransformData *transformData;
424 QGraphicsEffect *graphicsEffect;
425 QTransform sceneTransform;
426 int index;
427 int siblingIndex;
428 int itemDepth; // Lazily calculated when calling depth().
429 QGraphicsItem *focusProxy;
430 QList<QGraphicsItem **> focusProxyRefs;
431 QGraphicsItem *subFocusItem;
432 QGraphicsItem *focusScopeItem;
433 Qt::InputMethodHints imHints;
434 QGraphicsItem::PanelModality panelModality;
435 QMap<Qt::GestureType, Qt::GestureFlags> gestureContext;
436
437 // Packed 32 bits
438 quint32 acceptedMouseButtons : 5;
439 quint32 visible : 1;
440 quint32 explicitlyHidden : 1;
441 quint32 enabled : 1;
442 quint32 explicitlyDisabled : 1;
443 quint32 selected : 1;
444 quint32 acceptsHover : 1;
445 quint32 acceptDrops : 1;
446 quint32 isMemberOfGroup : 1;
447 quint32 handlesChildEvents : 1;
448 quint32 itemDiscovered : 1;
449 quint32 hasCursor : 1;
450 quint32 ancestorFlags : 4;
451 quint32 cacheMode : 2;
452 quint32 hasBoundingRegionGranularity : 1;
453 quint32 isWidget : 1;
454 quint32 dirty : 1;
455 quint32 dirtyChildren : 1;
456 quint32 localCollisionHack : 1;
457 quint32 inSetPosHelper : 1;
458 quint32 needSortChildren : 1;
459 quint32 allChildrenDirty : 1;
460
461 // Packed 32 bits
462 quint32 fullUpdatePending : 1;
463 quint32 flags : 17;
464 quint32 dirtyChildrenBoundingRect : 1;
465 quint32 paintedViewBoundingRectsNeedRepaint : 1;
466 quint32 dirtySceneTransform : 1;
467 quint32 geometryChanged : 1;
468 quint32 inDestructor : 1;
469 quint32 isObject : 1;
470 quint32 ignoreVisible : 1;
471 quint32 ignoreOpacity : 1;
472 quint32 acceptTouchEvents : 1;
473 quint32 acceptedTouchBeginEvent : 1;
474 quint32 filtersDescendantEvents : 1;
475 quint32 sceneTransformTranslateOnly : 1;
476 quint32 notifyBoundingRectChanged : 1;
477 quint32 notifyInvalidated : 1;
478
479 // New 32 bits
480 quint32 mouseSetsFocus : 1;
481 quint32 explicitActivate : 1;
482 quint32 wantsActive : 1;
483 quint32 holesInSiblingIndex : 1;
484 quint32 sequentialOrdering : 1;
485 quint32 updateDueToGraphicsEffect : 1;
486 quint32 scenePosDescendants : 1;
487
488 // Optional stacking order
489 int globalStackingOrder;
490 QGraphicsItem *q_ptr;
491};
492
493struct QGraphicsItemPrivate::TransformData
494{
495 QTransform transform;
496 qreal scale;
497 qreal rotation;
498 qreal xOrigin;
499 qreal yOrigin;
500 QList<QGraphicsTransform *> graphicsTransforms;
501 bool onlyTransform;
502
503 TransformData() :
504 scale(1.0), rotation(0.0),
505 xOrigin(0.0), yOrigin(0.0),
506 onlyTransform(true)
507 { }
508
509 QTransform computedFullTransform(QTransform *postmultiplyTransform = 0) const
510 {
511 if (onlyTransform) {
512 if (!postmultiplyTransform || postmultiplyTransform->isIdentity())
513 return transform;
514 if (transform.isIdentity())
515 return *postmultiplyTransform;
516 return transform * *postmultiplyTransform;
517 }
518
519 QTransform x(transform);
520 if (!graphicsTransforms.isEmpty()) {
521 QMatrix4x4 m;
522 for (int i = 0; i < graphicsTransforms.size(); ++i)
523 graphicsTransforms.at(i)->applyTo(&m);
524 x *= m.toTransform();
525 }
526 x.translate(xOrigin, yOrigin);
527 x.rotate(rotation);
528 x.scale(scale, scale);
529 x.translate(-xOrigin, -yOrigin);
530 if (postmultiplyTransform)
531 x *= *postmultiplyTransform;
532 return x;
533 }
534};
535
536struct QGraphicsItemPaintInfo
537{
538 inline QGraphicsItemPaintInfo(const QTransform *const xform1, const QTransform *const xform2,
539 const QTransform *const xform3,
540 QRegion *r, QWidget *w, QStyleOptionGraphicsItem *opt,
541 QPainter *p, qreal o, bool b1, bool b2)
542 : viewTransform(xform1), transformPtr(xform2), effectTransform(xform3), exposedRegion(r), widget(w),
543 option(opt), painter(p), opacity(o), wasDirtySceneTransform(b1), drawItem(b2)
544 {}
545
546 const QTransform *viewTransform;
547 const QTransform *transformPtr;
548 const QTransform *effectTransform;
549 QRegion *exposedRegion;
550 QWidget *widget;
551 QStyleOptionGraphicsItem *option;
552 QPainter *painter;
553 qreal opacity;
554 quint32 wasDirtySceneTransform : 1;
555 quint32 drawItem : 1;
556};
557
558#ifndef QT_NO_GRAPHICSEFFECT
559class QGraphicsItemEffectSourcePrivate : public QGraphicsEffectSourcePrivate
560{
561public:
562 QGraphicsItemEffectSourcePrivate(QGraphicsItem *i)
563 : QGraphicsEffectSourcePrivate(), item(i), info(0)
564 {}
565
566 inline void detach()
567 {
568 item->d_ptr->graphicsEffect = 0;
569 item->prepareGeometryChange();
570 }
571
572 inline const QGraphicsItem *graphicsItem() const
573 { return item; }
574
575 inline const QWidget *widget() const
576 { return 0; }
577
578 inline void update() {
579 item->d_ptr->updateDueToGraphicsEffect = true;
580 item->update();
581 item->d_ptr->updateDueToGraphicsEffect = false;
582 }
583
584 inline void effectBoundingRectChanged()
585 { item->prepareGeometryChange(); }
586
587 inline bool isPixmap() const
588 {
589 return item->type() == QGraphicsPixmapItem::Type
590 && !(item->flags() & QGraphicsItem::ItemIsSelectable)
591 && item->d_ptr->children.size() == 0;
592 //|| (item->d_ptr->isObject && qobject_cast<QmlGraphicsImage *>(q_func()));
593 }
594
595 inline const QStyleOption *styleOption() const
596 { return info ? info->option : 0; }
597
598 inline QRect deviceRect() const
599 {
600 if (!info || !info->widget) {
601 qWarning("QGraphicsEffectSource::deviceRect: Not yet implemented, lacking device context");
602 return QRect();
603 }
604 return info->widget->rect();
605 }
606
607 QRectF boundingRect(Qt::CoordinateSystem system) const;
608 void draw(QPainter *);
609 QPixmap pixmap(Qt::CoordinateSystem system,
610 QPoint *offset,
611 QGraphicsEffect::PixmapPadMode mode) const;
612
613 QGraphicsItem *item;
614 QGraphicsItemPaintInfo *info;
615 QTransform lastEffectTransform;
616};
617#endif //QT_NO_GRAPHICSEFFECT
618
619/*!
620 Returns true if \a item1 is on top of \a item2.
621 The items dont need to be siblings.
622
623 \internal
624*/
625inline bool qt_closestItemFirst(const QGraphicsItem *item1, const QGraphicsItem *item2)
626{
627 // Siblings? Just check their z-values.
628 const QGraphicsItemPrivate *d1 = item1->d_ptr.data();
629 const QGraphicsItemPrivate *d2 = item2->d_ptr.data();
630 if (d1->parent == d2->parent)
631 return qt_closestLeaf(item1, item2);
632
633 // Find common ancestor, and each item's ancestor closest to the common
634 // ancestor.
635 int item1Depth = d1->depth();
636 int item2Depth = d2->depth();
637 const QGraphicsItem *p = item1;
638 const QGraphicsItem *t1 = item1;
639 while (item1Depth > item2Depth && (p = p->d_ptr->parent)) {
640 if (p == item2) {
641 // item2 is one of item1's ancestors; item1 is on top
642 return !(t1->d_ptr->flags & QGraphicsItem::ItemStacksBehindParent);
643 }
644 t1 = p;
645 --item1Depth;
646 }
647 p = item2;
648 const QGraphicsItem *t2 = item2;
649 while (item2Depth > item1Depth && (p = p->d_ptr->parent)) {
650 if (p == item1) {
651 // item1 is one of item2's ancestors; item1 is not on top
652 return (t2->d_ptr->flags & QGraphicsItem::ItemStacksBehindParent);
653 }
654 t2 = p;
655 --item2Depth;
656 }
657
658 // item1Ancestor is now at the same level as item2Ancestor, but not the same.
659 const QGraphicsItem *p1 = t1;
660 const QGraphicsItem *p2 = t2;
661 while (t1 && t1 != t2) {
662 p1 = t1;
663 p2 = t2;
664 t1 = t1->d_ptr->parent;
665 t2 = t2->d_ptr->parent;
666 }
667
668 // in case we have a common ancestor, we compare the immediate children in the ancestor's path.
669 // otherwise we compare the respective items' topLevelItems directly.
670 return qt_closestLeaf(p1, p2);
671}
672
673/*!
674 Returns true if \a item2 is on top of \a item1.
675 The items dont need to be siblings.
676
677 \internal
678*/
679inline bool qt_closestItemLast(const QGraphicsItem *item1, const QGraphicsItem *item2)
680{
681 return qt_closestItemFirst(item2, item1);
682}
683
684/*!
685 \internal
686*/
687inline bool qt_closestLeaf(const QGraphicsItem *item1, const QGraphicsItem *item2)
688{
689 // Return true if sibling item1 is on top of item2.
690 const QGraphicsItemPrivate *d1 = item1->d_ptr.data();
691 const QGraphicsItemPrivate *d2 = item2->d_ptr.data();
692 bool f1 = d1->flags & QGraphicsItem::ItemStacksBehindParent;
693 bool f2 = d2->flags & QGraphicsItem::ItemStacksBehindParent;
694 if (f1 != f2)
695 return f2;
696 if (d1->z != d2->z)
697 return d1->z > d2->z;
698 return d1->siblingIndex > d2->siblingIndex;
699}
700
701/*!
702 \internal
703*/
704inline bool qt_notclosestLeaf(const QGraphicsItem *item1, const QGraphicsItem *item2)
705{ return qt_closestLeaf(item2, item1); }
706
707/*
708 return the full transform of the item to the parent. This include the position and all the transform data
709*/
710inline QTransform QGraphicsItemPrivate::transformToParent() const
711{
712 QTransform matrix;
713 combineTransformToParent(&matrix);
714 return matrix;
715}
716
717/*!
718 \internal
719*/
720inline void QGraphicsItemPrivate::ensureSortedChildren()
721{
722 if (needSortChildren) {
723 qSort(children.begin(), children.end(), qt_notclosestLeaf);
724 needSortChildren = 0;
725 sequentialOrdering = 1;
726 for (int i = 0; i < children.size(); ++i) {
727 if (children[i]->d_ptr->siblingIndex != i) {
728 sequentialOrdering = 0;
729 break;
730 }
731 }
732 }
733}
734
735/*!
736 \internal
737*/
738inline bool QGraphicsItemPrivate::insertionOrder(QGraphicsItem *a, QGraphicsItem *b)
739{
740 return a->d_ptr->siblingIndex < b->d_ptr->siblingIndex;
741}
742
743QT_END_NAMESPACE
744
745#endif // QT_NO_GRAPHICSVIEW
746
747#endif
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