diff -r 56cd8111b7f7 -r 41300fa6a67c src/gui/graphicsview/qgraphicsitem.cpp --- a/src/gui/graphicsview/qgraphicsitem.cpp Tue Jan 26 12:42:25 2010 +0200 +++ b/src/gui/graphicsview/qgraphicsitem.cpp Tue Feb 02 00:43:10 2010 +0200 @@ -52,7 +52,7 @@ painting implementation and item interaction through its event handlers. QGraphicsItem is part of \l{The Graphics View Framework} - \img graphicsview-items.png + \image graphicsview-items.png For convenience, Qt provides a set of standard graphics items for the most common shapes. These are: @@ -378,14 +378,20 @@ it's parent if it's z-value is negative. This flag enables setZValue() to toggle ItemStacksBehindParent. - \value ItemIsPanel. The item is a panel. A panel provides activation and + \value ItemIsPanel The item is a panel. A panel provides activation and contained focus handling. Only one panel can be active at a time (see QGraphicsItem::isActive()). When no panel is active, QGraphicsScene activates all non-panel items. Window items (i.e., QGraphicsItem::isWindow() returns true) are panels. This flag was introduced in Qt 4.6. - \omitvalue ItemIsFocusScope Internal only (for now). + \omitvalue ItemIsFocusScope \omit Internal only (for now). \endomit + + \value ItemSendsScenePositionChanges The item enables itemChange() + notifications for ItemScenePositionHasChanged. For performance reasons, + these notifications are disabled by default. You must enable this flag + to receive notifications for scene position changes. This flag was + introduced in Qt 4.6. */ /*! @@ -562,6 +568,14 @@ \value ItemOpacityHasChanged The item's opacity has changed. The value argument is the new opacity (i.e., a double). Do not call setOpacity() as this notification is delivered. The return value is ignored. + + \value ItemScenePositionHasChanged The item's scene position has changed. + This notification is sent if the ItemSendsScenePositionChanges flag is + enabled, and after the item's scene position has changed (i.e., the + position or transformation of the item itself or the position or + transformation of any ancestor has changed). The value argument is the + new scene position (the same as scenePos()), and QGraphicsItem ignores + the return value for this notification (i.e., a read-only notification). */ /*! @@ -741,7 +755,6 @@ case QGraphicsItem::ItemClipsChildrenToShape: flag = AncestorClipsChildren; enabled = flags & QGraphicsItem::ItemClipsChildrenToShape; - invalidateCachedClipPathRecursively(/*childrenOnly=*/true); break; case QGraphicsItem::ItemIgnoresTransformations: flag = AncestorIgnoresTransformations; @@ -990,6 +1003,10 @@ if (scene) { // Deliver the change to the index scene->d_func()->index->itemChange(q, QGraphicsItem::ItemParentChange, newParentVariant); + + // Disable scene pos notifications for old ancestors + if (scenePosDescendants || (flags & QGraphicsItem::ItemSendsScenePositionChanges)) + scene->d_func()->setScenePosItemEnabled(q, false); } if (subFocusItem && parent) { @@ -1039,13 +1056,31 @@ } // Update focus scope item ptr in new scope. - if (newParent) { + QGraphicsItem *newFocusScopeItem = subFocusItem ? subFocusItem : parentFocusScopeItem; + if (newFocusScopeItem && newParent) { + if (subFocusItem) { + // Find the subFocusItem's topmost focus scope. + QGraphicsItem *ancestorScope = 0; + QGraphicsItem *p = subFocusItem->d_ptr->parent; + while (p) { + if (p->flags() & QGraphicsItem::ItemIsFocusScope) + ancestorScope = p; + if (p->isPanel()) + break; + p = p->parentItem(); + } + if (ancestorScope) + newFocusScopeItem = ancestorScope; + } + QGraphicsItem *p = newParent; while (p) { if (p->flags() & QGraphicsItem::ItemIsFocusScope) { - p->d_ptr->focusScopeItem = subFocusItem ? subFocusItem : parentFocusScopeItem; - // ### The below line might not make sense... - if (subFocusItem) + p->d_ptr->focusScopeItem = newFocusScopeItem; + // Ensure the new item is no longer the subFocusItem. The + // only way to set focus on a child of a focus scope is + // by setting focus on the scope itself. + if (subFocusItem && !p->focusItem()) subFocusItem->d_ptr->clearSubFocus(); break; } @@ -1066,10 +1101,13 @@ parent->d_ptr->addChild(q); parent->itemChange(QGraphicsItem::ItemChildAddedChange, thisPointerVariant); - if (!implicitUpdate && scene) { - scene->d_func()->markDirty(q_ptr, QRect(), - /*invalidateChildren=*/false, - /*maybeDirtyClipPath=*/true); + if (scene) { + if (!implicitUpdate) + scene->d_func()->markDirty(q_ptr); + + // Re-enable scene pos notifications for new ancestors + if (scenePosDescendants || (flags & QGraphicsItem::ItemSendsScenePositionChanges)) + scene->d_func()->setScenePosItemEnabled(q, true); } // Inherit ancestor flags from the new parent. @@ -1106,11 +1144,8 @@ setEnabledHelper(true, /* explicit = */ false); // If the item is being deleted, the whole scene will be updated. - if (scene) { - scene->d_func()->markDirty(q_ptr, QRect(), - /*invalidateChildren=*/false, - /*maybeDirtyClipPath=*/true); - } + if (scene) + scene->d_func()->markDirty(q_ptr); } } @@ -1199,7 +1234,7 @@ const QTransform reverseMap = worldTransform.inverted(); const QVector exposedRects(exposedRegion.rects()); for (int i = 0; i < exposedRects.size(); ++i) { - option->exposedRect |= reverseMap.mapRect(exposedRects.at(i)); + option->exposedRect |= reverseMap.mapRect(QRectF(exposedRects.at(i))); if (option->exposedRect.contains(brect)) break; } @@ -1228,7 +1263,8 @@ } /*! - Constructs a QGraphicsItem, passing \a item to QGraphicsItem's constructor. It does not modify \fn QObject::parent(). + Constructs a QGraphicsItem with the given \a parent item. + It does not modify the parent object returned by QObject::parent(). If \a parent is 0, you can add the item to a scene by calling QGraphicsScene::addItem(). The item will then become a top-level item. @@ -1286,6 +1322,8 @@ */ QGraphicsItem::~QGraphicsItem() { + if (d_ptr->isObject) + QObjectPrivate::get(static_cast(this))->wasDeleted = true; d_ptr->inDestructor = 1; d_ptr->removeExtraItemCache(); @@ -1303,8 +1341,8 @@ } if (!d_ptr->children.isEmpty()) { - QList oldChildren = d_ptr->children; - qDeleteAll(oldChildren); + while (!d_ptr->children.isEmpty()) + delete d_ptr->children.first(); Q_ASSERT(d_ptr->children.isEmpty()); } @@ -1315,7 +1353,9 @@ d_ptr->setParentItemHelper(0); } +#ifndef QT_NO_GRAPHICSEFFECT delete d_ptr->graphicsEffect; +#endif //QT_NO_GRAPHICSEFFECT if (d_ptr->transformData) { for(int i = 0; i < d_ptr->transformData->graphicsTransforms.size(); ++i) { QGraphicsTransform *t = d_ptr->transformData->graphicsTransforms.at(i); @@ -1657,7 +1697,7 @@ d_ptr->scene->d_func()->index->itemChange(this, ItemFlagsChange, quint32(flags)); // Flags that alter the geometry of the item (or its children). - const quint32 geomChangeFlagsMask = (ItemClipsChildrenToShape | ItemClipsToShape | ItemIgnoresTransformations); + const quint32 geomChangeFlagsMask = (ItemClipsChildrenToShape | ItemClipsToShape | ItemIgnoresTransformations | ItemIsSelectable); bool fullUpdate = (quint32(flags) & geomChangeFlagsMask) != (d_ptr->flags & geomChangeFlagsMask); if (fullUpdate) d_ptr->paintedViewBoundingRectsNeedRepaint = 1; @@ -1686,9 +1726,6 @@ d_ptr->updateAncestorFlag(ItemClipsChildrenToShape); } - if ((flags & ItemClipsToShape) != (oldFlags & ItemClipsToShape)) - d_ptr->invalidateCachedClipPath(); - if ((flags & ItemIgnoresTransformations) != (oldFlags & ItemIgnoresTransformations)) { // Item children clipping changes. Propagate the ancestor flag to // all children. @@ -1725,9 +1762,13 @@ } if (d_ptr->scene) { - d_ptr->scene->d_func()->markDirty(this, QRectF(), - /*invalidateChildren=*/true, - /*maybeDirtyClipPath*/true); + if ((flags & ItemSendsScenePositionChanges) != (oldFlags & ItemSendsScenePositionChanges)) { + if (flags & ItemSendsScenePositionChanges) + d_ptr->scene->d_func()->registerScenePosItem(this); + else + d_ptr->scene->d_func()->unregisterScenePosItem(this); + } + d_ptr->scene->d_func()->markDirty(this, QRectF(), /*invalidateChildren=*/true); } // Notify change. @@ -2075,12 +2116,8 @@ QGraphicsItemCache *c = (QGraphicsItemCache *)qVariantValue(extra(ExtraCacheData)); if (c) c->purge(); - if (scene) { - scene->d_func()->markDirty(q_ptr, QRectF(), - /*invalidateChildren=*/false, - /*maybeDirtyClipPath=*/false, - /*force=*/true); - } + if (scene) + scene->d_func()->markDirty(q_ptr, QRectF(), /*invalidateChildren=*/false, /*force=*/true); } // Certain properties are dropped as an item becomes invisible. @@ -2144,7 +2181,7 @@ } // Enable subfocus - if (newVisible) { + if (scene && newVisible) { QGraphicsItem *p = parent; bool done = false; while (p) { @@ -2485,10 +2522,11 @@ // Update. if (d_ptr->scene) { +#ifndef QT_NO_GRAPHICSEFFECT d_ptr->invalidateGraphicsEffectsRecursively(); +#endif //QT_NO_GRAPHICSEFFECT d_ptr->scene->d_func()->markDirty(this, QRectF(), /*invalidateChildren=*/true, - /*maybeDirtyClipPath=*/false, /*force=*/false, /*ignoreOpacity=*/true); } @@ -2502,6 +2540,7 @@ \since 4.6 */ +#ifndef QT_NO_GRAPHICSEFFECT QGraphicsEffect *QGraphicsItem::graphicsEffect() const { return d_ptr->graphicsEffect; @@ -2515,6 +2554,8 @@ If \a effect is the installed on a different item, setGraphicsEffect() will remove the effect from the item and install it on this item. + QGraphicsItem takes ownership of \a effect. + \note This function will apply the effect on itself and all its children. \since 4.6 @@ -2524,29 +2565,49 @@ if (d_ptr->graphicsEffect == effect) return; - if (d_ptr->graphicsEffect && effect) { + if (d_ptr->graphicsEffect) { delete d_ptr->graphicsEffect; d_ptr->graphicsEffect = 0; } - if (!effect) { - // Unset current effect. - QGraphicsEffectPrivate *oldEffectPrivate = d_ptr->graphicsEffect->d_func(); - d_ptr->graphicsEffect = 0; - if (oldEffectPrivate) { - oldEffectPrivate->setGraphicsEffectSource(0); // deletes the current source. - if (d_ptr->scene) // Update the views directly. - d_ptr->scene->d_func()->markDirty(this, QRectF(), false, false, false, false, true); - } - } else { + if (effect) { // Set new effect. QGraphicsEffectSourcePrivate *sourced = new QGraphicsItemEffectSourcePrivate(this); QGraphicsEffectSource *source = new QGraphicsEffectSource(*sourced); d_ptr->graphicsEffect = effect; effect->d_func()->setGraphicsEffectSource(source); - } - - prepareGeometryChange(); + prepareGeometryChange(); + } +} +#endif //QT_NO_GRAPHICSEFFECT + +/*! + \internal + \since 4.6 + Returns the effective bounding rect of the given item space rect. + If the item has no effect, the rect is returned unmodified. + If the item has an effect, the effective rect can be extend beyond the + item's bounding rect, depending on the effect. + + \sa boundingRect() +*/ +QRectF QGraphicsItemPrivate::effectiveBoundingRect(const QRectF &rect) const +{ +#ifndef QT_NO_GRAPHICSEFFECT + Q_Q(const QGraphicsItem); + QGraphicsEffect *effect = graphicsEffect; + if (scene && effect && effect->isEnabled()) { + QRectF sceneRect = q->mapRectToScene(rect); + QRectF sceneEffectRect; + foreach (QGraphicsView *view, scene->views()) { + QRectF deviceRect = view->d_func()->mapRectFromScene(sceneRect); + QRect deviceEffectRect = effect->boundingRectFor(deviceRect).toAlignedRect(); + sceneEffectRect |= view->d_func()->mapRectToScene(deviceEffectRect); + } + return q->mapRectFromScene(sceneEffectRect); + } +#endif //QT_NO_GRAPHICSEFFECT + return rect; } /*! @@ -2561,22 +2622,30 @@ */ QRectF QGraphicsItemPrivate::effectiveBoundingRect() const { - QGraphicsEffect *effect = graphicsEffect; - QRectF brect = effect && effect->isEnabled() ? effect->boundingRect() : q_ptr->boundingRect(); +#ifndef QT_NO_GRAPHICSEFFECT + Q_Q(const QGraphicsItem); + QRectF brect = effectiveBoundingRect(q_ptr->boundingRect()); if (ancestorFlags & QGraphicsItemPrivate::AncestorClipsChildren) return brect; const QGraphicsItem *effectParent = parent; while (effectParent) { - effect = effectParent->d_ptr->graphicsEffect; - if (effect && effect->isEnabled()) - brect = effect->boundingRectFor(brect); + QGraphicsEffect *effect = effectParent->d_ptr->graphicsEffect; + if (scene && effect && effect->isEnabled()) { + const QRectF brectInParentSpace = q->mapRectToItem(effectParent, brect); + const QRectF effectRectInParentSpace = effectParent->d_ptr->effectiveBoundingRect(brectInParentSpace); + brect = effectParent->mapRectToItem(q, effectRectInParentSpace); + } if (effectParent->d_ptr->ancestorFlags & QGraphicsItemPrivate::AncestorClipsChildren) return brect; effectParent = effectParent->d_ptr->parent; } return brect; +#else //QT_NO_GRAPHICSEFFECT + return q_ptr->boundingRect(); +#endif //QT_NO_GRAPHICSEFFECT + } /*! @@ -2930,7 +2999,7 @@ { if (d_ptr->focusProxy) return d_ptr->focusProxy->hasFocus(); - return (d_ptr->scene && d_ptr->scene->focusItem() == this); + return isActive() && (d_ptr->scene && d_ptr->scene->focusItem() == this); } /*! @@ -2981,8 +3050,11 @@ while (p) { if (p->flags() & QGraphicsItem::ItemIsFocusScope) { p->d_ptr->focusScopeItem = q_ptr; - if (!q_ptr->isActive() || !p->focusItem()) + if (!p->focusItem()) { + // If you call setFocus on a child of a focus scope that + // doesn't currently have a focus item, then stop. return; + } break; } p = p->d_ptr->parent; @@ -3285,6 +3357,9 @@ */ void QGraphicsItem::setX(qreal x) { + if (d_ptr->inDestructor) + return; + d_ptr->setPosHelper(QPointF(x, d_ptr->pos.y())); } @@ -3306,6 +3381,9 @@ */ void QGraphicsItem::setY(qreal y) { + if (d_ptr->inDestructor) + return; + d_ptr->setPosHelper(QPointF(d_ptr->pos.x(), y)); } @@ -3329,7 +3407,6 @@ { Q_Q(QGraphicsItem); inSetPosHelper = 1; - updateCachedClipPathFromSetPosHelper(pos); if (scene) q->prepareGeometryChange(); QPointF oldPos = this->pos; @@ -3371,6 +3448,9 @@ if (d_ptr->pos == pos) return; + if (d_ptr->inDestructor) + return; + // Update and repositition. if (!(d_ptr->flags & ItemSendsGeometryChanges)) { d_ptr->setPosHelper(pos); @@ -3388,6 +3468,7 @@ // Send post-notification. itemChange(QGraphicsItem::ItemPositionHasChanged, newPosVariant); + d_ptr->sendScenePosChange(); } /*! @@ -3998,6 +4079,7 @@ // Send post-notification. itemChange(ItemTransformHasChanged, newTransformVariant); + d_ptr->sendScenePosChange(); } /*! @@ -4222,6 +4304,24 @@ } /*! + \internal +*/ +inline void QGraphicsItemPrivate::sendScenePosChange() +{ + Q_Q(QGraphicsItem); + if (scene) { + if (flags & QGraphicsItem::ItemSendsScenePositionChanges) + q->itemChange(QGraphicsItem::ItemScenePositionHasChanged, q->scenePos()); + if (scenePosDescendants) { + foreach (QGraphicsItem *item, scene->d_func()->scenePosItems) { + if (q->isAncestorOf(item)) + item->itemChange(QGraphicsItem::ItemScenePositionHasChanged, item->scenePos()); + } + } + } +} + +/*! \since 4.6 Stacks this item before \a sibling, which must be a sibling item (i.e., the @@ -4263,7 +4363,7 @@ // Only move items with the same Z value, and that need moving. int siblingIndex = sibling->d_ptr->siblingIndex; int myIndex = d_ptr->siblingIndex; - if (myIndex >= siblingIndex && d_ptr->z == sibling->d_ptr->z) { + if (myIndex >= siblingIndex) { siblings->move(myIndex, siblingIndex); // Fixup the insertion ordering. for (int i = 0; i < siblings->size(); ++i) { @@ -4272,6 +4372,12 @@ ++index; } d_ptr->siblingIndex = siblingIndex; + for (int i = 0; i < siblings->size(); ++i) { + int &index = siblings->at(i)->d_ptr->siblingIndex; + if (i != siblingIndex && index >= siblingIndex && index <= myIndex) + siblings->at(i)->d_ptr->siblingOrderChange(); + } + d_ptr->siblingOrderChange(); } } @@ -4436,22 +4542,12 @@ QPainterPath QGraphicsItem::clipPath() const { Q_D(const QGraphicsItem); - if (!d->dirtyClipPath) - return d->emptyClipPath ? QPainterPath() : d->cachedClipPath; - - if (!isClipped()) { - d_ptr->setCachedClipPath(QPainterPath()); - return d->cachedClipPath; - } + if (!isClipped()) + return QPainterPath(); const QRectF thisBoundingRect(boundingRect()); - if (thisBoundingRect.isEmpty()) { - if (d_ptr->flags & ItemClipsChildrenToShape) - d_ptr->setEmptyCachedClipPathRecursively(); - else - d_ptr->setEmptyCachedClipPath(); + if (thisBoundingRect.isEmpty()) return QPainterPath(); - } QPainterPath clip; // Start with the item's bounding rect. @@ -4462,40 +4558,18 @@ const QGraphicsItem *lastParent = this; // Intersect any in-between clips starting at the top and moving downwards. - bool foundValidClipPath = false; while ((parent = parent->d_ptr->parent)) { if (parent->d_ptr->flags & ItemClipsChildrenToShape) { // Map clip to the current parent and intersect with its shape/clipPath clip = lastParent->itemTransform(parent).map(clip); - if ((foundValidClipPath = !parent->d_ptr->dirtyClipPath && parent->isClipped())) { - if (parent->d_ptr->emptyClipPath) { - if (d_ptr->flags & ItemClipsChildrenToShape) - d_ptr->setEmptyCachedClipPathRecursively(); - else - d_ptr->setEmptyCachedClipPath(); - return QPainterPath(); - } - clip = clip.intersected(parent->d_ptr->cachedClipPath); - if (!(parent->d_ptr->flags & ItemClipsToShape)) - clip = clip.intersected(parent->shape()); - } else { - clip = clip.intersected(parent->shape()); - } - - if (clip.isEmpty()) { - if (d_ptr->flags & ItemClipsChildrenToShape) - d_ptr->setEmptyCachedClipPathRecursively(); - else - d_ptr->setEmptyCachedClipPath(); + clip = clip.intersected(parent->shape()); + if (clip.isEmpty()) return clip; - } lastParent = parent; } - if (!(parent->d_ptr->ancestorFlags & QGraphicsItemPrivate::AncestorClipsChildren) - || foundValidClipPath) { + if (!(parent->d_ptr->ancestorFlags & QGraphicsItemPrivate::AncestorClipsChildren)) break; - } } if (lastParent != this) { @@ -4508,7 +4582,6 @@ if (d->flags & ItemClipsToShape) clip = clip.intersected(shape()); - d_ptr->setCachedClipPath(clip); return clip; } @@ -4927,15 +5000,14 @@ \internal Returns true if we can discard an update request; otherwise false. */ -bool QGraphicsItemPrivate::discardUpdateRequest(bool ignoreClipping, bool ignoreVisibleBit, - bool ignoreDirtyBit, bool ignoreOpacity) const +bool QGraphicsItemPrivate::discardUpdateRequest(bool ignoreVisibleBit, bool ignoreDirtyBit, + bool ignoreOpacity) const { // No scene, or if the scene is updating everything, means we have nothing // to do. The only exception is if the scene tracks the growing scene rect. return !scene || (!visible && !ignoreVisibleBit && !this->ignoreVisible) || (!ignoreDirtyBit && fullUpdatePending) - || (!ignoreClipping && (childrenClippedToShape() && isClippedAway())) || (!ignoreOpacity && !this->ignoreOpacity && childrenCombineOpacity() && isFullyTransparent()); } @@ -4953,6 +5025,7 @@ /*! \internal */ +#ifndef QT_NO_GRAPHICSEFFECT void QGraphicsItemPrivate::invalidateGraphicsEffectsRecursively() { QGraphicsItemPrivate *itemPrivate = this; @@ -4965,6 +5038,7 @@ } } while ((itemPrivate = itemPrivate->parent ? itemPrivate->parent->d_ptr.data() : 0)); } +#endif //QT_NO_GRAPHICSEFFECT /*! \internal @@ -5068,109 +5142,6 @@ unsetExtra(ExtraCacheData); } -void QGraphicsItemPrivate::setEmptyCachedClipPathRecursively(const QRectF &emptyIfOutsideThisRect) -{ - setEmptyCachedClipPath(); - - const bool checkRect = !emptyIfOutsideThisRect.isNull() - && !(flags & QGraphicsItem::ItemClipsChildrenToShape); - for (int i = 0; i < children.size(); ++i) { - if (!checkRect) { - children.at(i)->d_ptr->setEmptyCachedClipPathRecursively(); - continue; - } - - QGraphicsItem *child = children.at(i); - const QRectF rect = child->mapRectFromParent(emptyIfOutsideThisRect); - if (rect.intersects(child->boundingRect())) - child->d_ptr->invalidateCachedClipPathRecursively(false, rect); - else - child->d_ptr->setEmptyCachedClipPathRecursively(rect); - } -} - -void QGraphicsItemPrivate::invalidateCachedClipPathRecursively(bool childrenOnly, const QRectF &emptyIfOutsideThisRect) -{ - if (!childrenOnly) - invalidateCachedClipPath(); - - const bool checkRect = !emptyIfOutsideThisRect.isNull(); - for (int i = 0; i < children.size(); ++i) { - if (!checkRect) { - children.at(i)->d_ptr->invalidateCachedClipPathRecursively(false); - continue; - } - - QGraphicsItem *child = children.at(i); - const QRectF rect = child->mapRectFromParent(emptyIfOutsideThisRect); - if (rect.intersects(child->boundingRect())) - child->d_ptr->invalidateCachedClipPathRecursively(false, rect); - else - child->d_ptr->setEmptyCachedClipPathRecursively(rect); - } -} - -void QGraphicsItemPrivate::updateCachedClipPathFromSetPosHelper(const QPointF &newPos) -{ - Q_ASSERT(inSetPosHelper); - - if (inDestructor || !(ancestorFlags & QGraphicsItemPrivate::AncestorClipsChildren)) - return; // Not clipped by any ancestor. - - // Find closest clip ancestor and transform. - Q_Q(QGraphicsItem); - // COMBINE - QTransform thisToParentTransform = QTransform::fromTranslate(newPos.x(), newPos.y()); - if (transformData) - thisToParentTransform = transformData->computedFullTransform(&thisToParentTransform); - QGraphicsItem *clipParent = parent; - while (clipParent && !clipParent->d_ptr->inDestructor && !(clipParent->d_ptr->flags & QGraphicsItem::ItemClipsChildrenToShape)) { - thisToParentTransform *= clipParent->d_ptr->transformToParent(); - clipParent = clipParent->d_ptr->parent; - } - - // Ensure no parents are currently being deleted. This can only - // happen if the item is moved by a dying ancestor. - QGraphicsItem *p = clipParent; - while (p) { - if (p->d_ptr->inDestructor) - return; - p = p->d_ptr->parent; - } - - // From here everything is calculated in clip parent's coordinates. - const QRectF parentBoundingRect(clipParent->boundingRect()); - const QRectF thisBoundingRect(thisToParentTransform.mapRect(q->boundingRect())); - - if (!parentBoundingRect.intersects(thisBoundingRect)) { - // Item is moved outside the clip parent's bounding rect, - // i.e. it is fully clipped and the clip path is empty. - if (flags & QGraphicsItem::ItemClipsChildrenToShape) - setEmptyCachedClipPathRecursively(); - else - setEmptyCachedClipPathRecursively(thisToParentTransform.inverted().mapRect(parentBoundingRect)); - return; - } - - const QPainterPath parentClip(clipParent->isClipped() ? clipParent->clipPath() : clipParent->shape()); - if (parentClip.contains(thisBoundingRect)) - return; // Item is inside the clip parent's shape. No update required. - - const QRectF parentClipRect(parentClip.controlPointRect()); - if (!parentClipRect.intersects(thisBoundingRect)) { - // Item is moved outside the clip parent's shape, - // i.e. it is fully clipped and the clip path is empty. - if (flags & QGraphicsItem::ItemClipsChildrenToShape) - setEmptyCachedClipPathRecursively(); - else - setEmptyCachedClipPathRecursively(thisToParentTransform.inverted().mapRect(parentClipRect)); - } else { - // Item is partially inside the clip parent's shape, - // i.e. the cached clip path must be invalidated. - invalidateCachedClipPathRecursively(false, thisToParentTransform.inverted().mapRect(parentClipRect)); - } -} - // Traverses all the ancestors up to the top-level and updates the pointer to // always point to the top-most item that has a dirty scene transform. // It then backtracks to the top-most dirty item and start calculating the @@ -5269,6 +5240,16 @@ /*! \internal + Subclasses can reimplement this function to be notified when its + siblingIndex order is changed. +*/ +void QGraphicsItemPrivate::siblingOrderChange() +{ +} + +/*! + \internal + Tells us if it is a proxy widget */ bool QGraphicsItemPrivate::isProxyWidget() const @@ -5300,7 +5281,9 @@ return; // Make sure we notify effects about invalidated source. +#ifndef QT_NO_GRAPHICSEFFECT d_ptr->invalidateGraphicsEffectsRecursively(); +#endif //QT_NO_GRAPHICSEFFECT if (CacheMode(d_ptr->cacheMode) != NoCache) { // Invalidate cache. @@ -7175,9 +7158,7 @@ QGraphicsScenePrivate *scenePrivate = d_ptr->scene->d_func(); scenePrivate->index->prepareBoundingRectChange(this); - scenePrivate->markDirty(this, QRectF(), - /*invalidateChildren=*/true, - /*maybeDirtyClipPath=*/!d_ptr->inSetPosHelper); + scenePrivate->markDirty(this, QRectF(), /*invalidateChildren=*/true); // For compatibility reasons, we have to update the item's old geometry // if someone is connected to the changed signal or the scene has no views. @@ -7196,19 +7177,16 @@ QGraphicsItem *parent = this; while ((parent = parent->d_ptr->parent)) { - parent->d_ptr->dirtyChildrenBoundingRect = 1; + QGraphicsItemPrivate *parentp = parent->d_ptr.data(); + parentp->dirtyChildrenBoundingRect = 1; // ### Only do this if the parent's effect applies to the entire subtree. - parent->d_ptr->notifyBoundingRectChanged = 1; - } - - if (d_ptr->inSetPosHelper) - return; - - if (d_ptr->flags & ItemClipsChildrenToShape - || d_ptr->ancestorFlags & QGraphicsItemPrivate::AncestorClipsChildren) { - d_ptr->invalidateCachedClipPathRecursively(); - } else { - d_ptr->invalidateCachedClipPath(); + parentp->notifyBoundingRectChanged = 1; +#ifndef QT_NO_GRAPHICSEFFECT + if (parentp->scene && parentp->graphicsEffect) { + parentp->notifyInvalidated = 1; + static_cast(parentp->graphicsEffect->d_func()->source->d_func())->invalidateCache(); + } +#endif } } @@ -7283,6 +7261,21 @@ The class extends a QGraphicsItem with QObject's signal/slot and property mechanisms. It maps many of QGraphicsItem's basic setters and getters to properties and adds notification signals for many of them. + + \section1 Parents and Children + + Each graphics object can be constructed with a parent item. This ensures that the + item will be destroyed when its parent item is destroyed. Although QGraphicsObject + inherits from both QObject and QGraphicsItem, you should use the functions provided + by QGraphicsItem, \e not QObject, to manage the relationships between parent and + child items. + + The relationships between items can be explored using the parentItem() and childItems() + functions. In the hierarchy of items in a scene, the parentObject() and parentWidget() + functions are the equivalent of the QWidget::parent() and QWidget::parentWidget() + functions for QWidget subclasses. + + \sa QGraphicsWidget */ /*! @@ -7304,33 +7297,42 @@ } /*! - Subscribes the graphics object to the given \a gesture for the specified \a context. - - \sa QGestureEvent -*/ - -void QGraphicsObject::grabGesture(Qt::GestureType gesture, Qt::GestureContext context) + Subscribes the graphics object to the given \a gesture with specific \a flags. + + \sa ungrabGesture(), QGestureEvent +*/ +void QGraphicsObject::grabGesture(Qt::GestureType gesture, Qt::GestureFlags flags) { QGraphicsItemPrivate * const d = QGraphicsItem::d_func(); - d->gestureContext.insert(gesture, context); + d->gestureContext.insert(gesture, flags); (void)QGestureManager::instance(); // create a gesture manager } /*! + Unsubscribes the graphics object from the given \a gesture. + + \sa grabGesture(), QGestureEvent +*/ +void QGraphicsObject::ungrabGesture(Qt::GestureType gesture) +{ + QGraphicsItemPrivate * const d = QGraphicsItem::d_func(); + if (d->gestureContext.remove(gesture)) { + QGestureManager *manager = QGestureManager::instance(); + manager->cleanupCachedGestures(this, gesture); + } +} + +/*! \property QGraphicsObject::parent - \brief the parent of the item. It is independent from \fn QObject::parent. + \brief the parent of the item + + \note The item's parent is set independently of the parent object returned + by QObject::parent(). \sa QGraphicsItem::setParentItem(), QGraphicsItem::parentObject() */ /*! - \property QGraphicsObject::id - \brief the id of of the item - - \sa QObject::objectName(), QObject::setObjectName() -*/ - -/*! \property QGraphicsObject::opacity \brief the opacity of the item @@ -9138,10 +9140,14 @@ QRectF QGraphicsPixmapItem::boundingRect() const { Q_D(const QGraphicsPixmapItem); - qreal pw = 1.0; if (d->pixmap.isNull()) return QRectF(); - return QRectF(d->offset, d->pixmap.size()).adjusted(-pw/2, -pw/2, pw/2, pw/2); + if (d->flags & ItemIsSelectable) { + qreal pw = 1.0; + return QRectF(d->offset, d->pixmap.size()).adjusted(-pw/2, -pw/2, pw/2, pw/2); + } else { + return QRectF(d->offset, d->pixmap.size()); + } } /*! @@ -9456,8 +9462,11 @@ { QTextControl *c = dd->textControl(); QPalette pal = c->palette(); + QColor old = pal.color(QPalette::Text); pal.setColor(QPalette::Text, col); c->setPalette(pal); + if (old != col) + update(); } /*! @@ -9651,12 +9660,14 @@ // Reset the focus widget's input context, regardless // of how this item gained or lost focus. if (QWidget *fw = qApp->focusWidget()) { +#ifndef QT_NO_IM if (QInputContext *qic = fw->inputContext()) { if (event->type() == QEvent::FocusIn || event->type() == QEvent::FocusOut) qic->reset(); else qic->update(); } +#endif //QT_NO_IM } break; default: @@ -9723,7 +9734,7 @@ } QWidget *widget = event->widget(); - if (widget) { + if (widget && (dd->control->textInteractionFlags() & Qt::TextEditable) && boundingRect().contains(event->pos())) { qt_widget_private(widget)->handleSoftwareInputPanel(event->button(), dd->clickCausedFocus); } dd->clickCausedFocus = 0; @@ -10027,9 +10038,10 @@ void QGraphicsTextItem::setTextInteractionFlags(Qt::TextInteractionFlags flags) { if (flags == Qt::NoTextInteraction) - setFlags(this->flags() & ~QGraphicsItem::ItemIsFocusable); + setFlags(this->flags() & ~(QGraphicsItem::ItemIsFocusable | QGraphicsItem::ItemAcceptsInputMethod)); else - setFlags(this->flags() | QGraphicsItem::ItemIsFocusable); + setFlags(this->flags() | QGraphicsItem::ItemIsFocusable | QGraphicsItem::ItemAcceptsInputMethod); + dd->textControl()->setTextInteractionFlags(flags); } @@ -10532,6 +10544,20 @@ if (!item->pos().isNull()) newItemTransform *= QTransform::fromTranslate(-item->x(), -item->y()); + // removing additional transformations properties applied with itemTransform() + QPointF origin = item->transformOriginPoint(); + QMatrix4x4 m; + QList transformList = item->transformations(); + for (int i = 0; i < transformList.size(); ++i) + transformList.at(i)->applyTo(&m); + newItemTransform *= m.toTransform().inverted(); + newItemTransform.translate(origin.x(), origin.y()); + newItemTransform.rotate(-item->rotation()); + newItemTransform.scale(1/item->scale(), 1/item->scale()); + newItemTransform.translate(-origin.x(), -origin.y()); + + // ### Expensive, we could maybe use dirtySceneTransform bit for optimization + item->setTransform(newItemTransform); item->d_func()->setIsMemberOfGroup(true); prepareGeometryChange(); @@ -10556,11 +10582,39 @@ } QGraphicsItem *newParent = d_ptr->parent; + + // COMBINE + bool ok; + QTransform itemTransform; + if (newParent) + itemTransform = item->itemTransform(newParent, &ok); + else + itemTransform = item->sceneTransform(); + QPointF oldPos = item->mapToItem(newParent, 0, 0); item->setParentItem(newParent); - // ### This function should remap the item's matrix to keep the item's - // transformation unchanged relative to the scene. item->setPos(oldPos); + + // removing position from translation component of the new transform + if (!item->pos().isNull()) + itemTransform *= QTransform::fromTranslate(-item->x(), -item->y()); + + // removing additional transformations properties applied + // with itemTransform() or sceneTransform() + QPointF origin = item->transformOriginPoint(); + QMatrix4x4 m; + QList transformList = item->transformations(); + for (int i = 0; i < transformList.size(); ++i) + transformList.at(i)->applyTo(&m); + itemTransform *= m.toTransform().inverted(); + itemTransform.translate(origin.x(), origin.y()); + itemTransform.rotate(-item->rotation()); + itemTransform.scale(1 / item->scale(), 1 / item->scale()); + itemTransform.translate(-origin.x(), -origin.y()); + + // ### Expensive, we could maybe use dirtySceneTransform bit for optimization + + item->setTransform(itemTransform); item->d_func()->setIsMemberOfGroup(item->group() != 0); // ### Quite expensive. But removeFromGroup() isn't called very often. @@ -10617,6 +10671,7 @@ return Type; } +#ifndef QT_NO_GRAPHICSEFFECT QRectF QGraphicsItemEffectSourcePrivate::boundingRect(Qt::CoordinateSystem system) const { const bool deviceCoordinates = (system == Qt::DeviceCoordinates); @@ -10660,7 +10715,8 @@ } } -QPixmap QGraphicsItemEffectSourcePrivate::pixmap(Qt::CoordinateSystem system, QPoint *offset) const +QPixmap QGraphicsItemEffectSourcePrivate::pixmap(Qt::CoordinateSystem system, QPoint *offset, + QGraphicsEffect::PixmapPadMode mode) const { const bool deviceCoordinates = (system == Qt::DeviceCoordinates); if (!info && deviceCoordinates) { @@ -10668,16 +10724,45 @@ qWarning("QGraphicsEffectSource::pixmap: Not yet implemented, lacking device context"); return QPixmap(); } - if (!item->d_ptr->scene) return QPixmap(); QGraphicsScenePrivate *scened = item->d_ptr->scene->d_func(); const QRectF sourceRect = boundingRect(system); - QRect effectRect = item->graphicsEffect()->boundingRectFor(sourceRect).toAlignedRect(); + QRectF effectRectF; + + bool unpadded = false; + if (mode == QGraphicsEffect::PadToEffectiveBoundingRect) { + if (info) { + effectRectF = item->graphicsEffect()->boundingRectFor(boundingRect(Qt::DeviceCoordinates)); + unpadded = (effectRectF.size() == sourceRect.size()); + if (info && system == Qt::LogicalCoordinates) + effectRectF = info->painter->worldTransform().inverted().mapRect(effectRectF); + } else { + // no choice but to send a logical coordinate bounding rect to boundingRectFor + effectRectF = item->graphicsEffect()->boundingRectFor(sourceRect); + } + } else if (mode == QGraphicsEffect::PadToTransparentBorder) { + // adjust by 1.5 to account for cosmetic pens + effectRectF = sourceRect.adjusted(-1.5, -1.5, 1.5, 1.5); + } else { + effectRectF = sourceRect; + unpadded = true; + } + + QRect effectRect = effectRectF.toAlignedRect(); + if (offset) *offset = effectRect.topLeft(); + bool untransformed = !deviceCoordinates + || info->painter->worldTransform().type() <= QTransform::TxTranslate; + if (untransformed && unpadded && isPixmap()) { + if (offset) + *offset = boundingRect(system).topLeft().toPoint(); + return static_cast(item)->pixmap(); + } + if (deviceCoordinates) { // Clip to viewport rect. int left, top, right, bottom; @@ -10702,7 +10787,6 @@ effectRect.setBottom(deviceHeight -1); } - if (effectRect.isEmpty()) return QPixmap(); @@ -10740,6 +10824,7 @@ return pixmap; } +#endif //QT_NO_GRAPHICSEFFECT #ifndef QT_NO_DEBUG_STREAM QDebug operator<<(QDebug debug, QGraphicsItem *item) @@ -10749,8 +10834,12 @@ return debug; } - debug << "QGraphicsItem(this =" << ((void*)item) - << ", parent =" << ((void*)item->parentItem()) + if (QGraphicsObject *o = item->toGraphicsObject()) + debug << o->metaObject()->className(); + else + debug << "QGraphicsItem"; + debug << "(this =" << (void*)item + << ", parent =" << (void*)item->parentItem() << ", pos =" << item->pos() << ", z =" << item->zValue() << ", flags = " << item->flags() << ")"; @@ -10859,6 +10948,9 @@ case QGraphicsItem::ItemOpacityHasChanged: str = "ItemOpacityHasChanged"; break; + case QGraphicsItem::ItemScenePositionHasChanged: + str = "ItemScenePositionHasChanged"; + break; } debug << str; return debug; @@ -10916,6 +11008,9 @@ case QGraphicsItem::ItemIsFocusScope: str = "ItemIsFocusScope"; break; + case QGraphicsItem::ItemSendsScenePositionChanges: + str = "ItemSendsScenePositionChanges"; + break; } debug << str; return debug;