diff options
| -rw-r--r-- | src/quick/items/items.pri | 2 | ||||
| -rw-r--r-- | src/quick/items/qquickgridview.cpp | 42 | ||||
| -rw-r--r-- | src/quick/items/qquickitemsmodule.cpp | 1 | ||||
| -rw-r--r-- | src/quick/items/qquickitemview.cpp | 890 | ||||
| -rw-r--r-- | src/quick/items/qquickitemview_p.h | 44 | ||||
| -rw-r--r-- | src/quick/items/qquickitemview_p_p.h | 88 | ||||
| -rw-r--r-- | src/quick/items/qquickitemviewtransition.cpp | 770 | ||||
| -rw-r--r-- | src/quick/items/qquickitemviewtransition_p.h | 201 | ||||
| -rw-r--r-- | src/quick/items/qquicklistview.cpp | 42 |
9 files changed, 1159 insertions, 921 deletions
diff --git a/src/quick/items/items.pri b/src/quick/items/items.pri index 21bf7cc8c1..54220434b4 100644 --- a/src/quick/items/items.pri +++ b/src/quick/items/items.pri @@ -72,6 +72,7 @@ HEADERS += \ $$PWD/qquickmultipointtoucharea_p.h \ $$PWD/qquickitemview_p.h \ $$PWD/qquickitemview_p_p.h \ + $$PWD/qquickitemviewtransition_p.h \ $$PWD/qquickscreen_p.h \ $$PWD/qquickwindowmodule_p.h \ $$PWD/qquickwindowmanager_p.h @@ -124,6 +125,7 @@ SOURCES += \ $$PWD/qquickdroparea.cpp \ $$PWD/qquickmultipointtoucharea.cpp \ $$PWD/qquickitemview.cpp \ + $$PWD/qquickitemviewtransition.cpp \ $$PWD/qquickwindowmodule.cpp \ $$PWD/qquickscreen.cpp \ $$PWD/qquickwindowmanager.cpp diff --git a/src/quick/items/qquickgridview.cpp b/src/quick/items/qquickgridview.cpp index a7e0af487f..fbce0af0c3 100644 --- a/src/quick/items/qquickgridview.cpp +++ b/src/quick/items/qquickgridview.cpp @@ -127,9 +127,6 @@ public: return (x >= itemX() && x < itemX() + view->cellWidth() && y >= itemY() && y < itemY() + view->cellHeight()); } - QQuickItemView *itemView() const { - return view; - } QQuickGridView *view; @@ -485,7 +482,7 @@ bool QQuickGridViewPrivate::addVisibleItems(qreal fillFrom, qreal fillTo, bool d #endif if (!(item = static_cast<FxGridItemSG*>(createItem(modelIndex, doBuffer)))) break; - if (!canTransition(FxViewItemTransitionManager::PopulateTransition, true)) // pos will be set by layoutVisibleItems() + if (!transitioner || !transitioner->canTransition(QQuickItemViewTransitioner::PopulateTransition, true)) // pos will be set by layoutVisibleItems() item->setPosition(colPos, rowPos); item->item->setVisible(!doBuffer); visibleItems.append(item); @@ -523,7 +520,7 @@ bool QQuickGridViewPrivate::addVisibleItems(qreal fillFrom, qreal fillTo, bool d if (!(item = static_cast<FxGridItemSG*>(createItem(visibleIndex-1, doBuffer)))) break; --visibleIndex; - if (!canTransition(FxViewItemTransitionManager::PopulateTransition, true)) // pos will be set by layoutVisibleItems() + if (!transitioner || !transitioner->canTransition(QQuickItemViewTransitioner::PopulateTransition, true)) // pos will be set by layoutVisibleItems() item->setPosition(colPos, rowPos); item->item->setVisible(!doBuffer); visibleItems.prepend(item); @@ -1674,6 +1671,10 @@ void QQuickGridView::setSnapMode(SnapMode mode) the new item that has been added to the view; to animate the added items, set the \l add property. + If an item is displaced by multiple types of operations at the same time, it is not + defined as to whether the addDisplaced, moveDisplaced or removeDisplaced transition + will be applied. + For more details and examples on how to use view transitions, see the ViewTransition documentation. @@ -1737,6 +1738,10 @@ void QQuickGridView::setSnapMode(SnapMode mode) the items that are the actual subjects of the move operation; to animate the moved items, set the \l move property. + If an item is displaced by multiple types of operations at the same time, it is not + defined as to whether the addDisplaced, moveDisplaced or removeDisplaced transition + will be applied. + For more details and examples on how to use view transitions, see the ViewTransition documentation. @@ -1804,6 +1809,10 @@ void QQuickGridView::setSnapMode(SnapMode mode) the item that has actually been removed from the view; to animate the removed items, set the \l remove property. + If an item is displaced by multiple types of operations at the same time, it is not + defined as to whether the addDisplaced, moveDisplaced or removeDisplaced transition + will be applied. + For more details and examples on how to use view transitions, see the ViewTransition documentation. @@ -2112,10 +2121,12 @@ bool QQuickGridViewPrivate::applyInsertionChange(const QDeclarativeChangeSet::In FxViewItem *item = visibleItems.at(i); if (item->index != -1 && item->index >= modelIndex) { item->index += count; - if (change.isMove()) - transitionNextReposition(item, FxViewItemTransitionManager::MoveTransition, false); - else - transitionNextReposition(item, FxViewItemTransitionManager::AddTransition, false); + if (transitioner) { + if (change.isMove()) + transitioner->transitionNextReposition(item, QQuickItemViewTransitioner::MoveTransition, false); + else + transitioner->transitionNextReposition(item, QQuickItemViewTransitioner::AddTransition, false); + } } } @@ -2146,7 +2157,8 @@ bool QQuickGridViewPrivate::applyInsertionChange(const QDeclarativeChangeSet::In insertResult->changedFirstItem = true; if (!change.isMove()) { addedItems->append(item); - transitionNextReposition(item, FxViewItemTransitionManager::AddTransition, true); + if (transitioner) + transitioner->transitionNextReposition(item, QQuickItemViewTransitioner::AddTransition, true); } insertResult->sizeChangesBeforeVisiblePos += rowSize(); } @@ -2179,11 +2191,12 @@ bool QQuickGridViewPrivate::applyInsertionChange(const QDeclarativeChangeSet::In if (change.isMove()) { // we know this is a move target, since move displaced items that are // shuffled into view due to a move would be added in refill() - if (canTransition(FxViewItemTransitionManager::MoveTransition, true) && newItem) + if (newItem && transitioner && transitioner->canTransition(QQuickItemViewTransitioner::MoveTransition, true)) movingIntoView->append(MovedItem(item, change.moveKey(item->index))); } else { addedItems->append(item); - transitionNextReposition(item, FxViewItemTransitionManager::AddTransition, true); + if (transitioner) + transitioner->transitionNextReposition(item, QQuickItemViewTransitioner::AddTransition, true); } insertResult->sizeChangesAfterVisiblePos += rowSize(); @@ -2204,6 +2217,9 @@ bool QQuickGridViewPrivate::applyInsertionChange(const QDeclarativeChangeSet::In void QQuickGridViewPrivate::translateAndTransitionItemsAfter(int afterModelIndex, const ChangeResult &insertionResult, const ChangeResult &removalResult) { + if (!transitioner) + return; + int markerItemIndex = -1; for (int i=0; i<visibleItems.count(); i++) { if (visibleItems[i]->index == afterModelIndex) { @@ -2231,7 +2247,7 @@ void QQuickGridViewPrivate::translateAndTransitionItemsAfter(int afterModelIndex qreal origColPos = gridItem->rowPos(); int indexDiff = gridItem->index - countItemsRemoved; gridItem->setPosition((indexDiff % columns) * colSize(), (indexDiff / columns) * rowSize()); - transitionNextReposition(gridItem, FxViewItemTransitionManager::RemoveTransition, false); + transitioner->transitionNextReposition(gridItem, QQuickItemViewTransitioner::RemoveTransition, false); gridItem->setPosition(origRowPos, origColPos); } } diff --git a/src/quick/items/qquickitemsmodule.cpp b/src/quick/items/qquickitemsmodule.cpp index b9e401a231..f50237427b 100644 --- a/src/quick/items/qquickitemsmodule.cpp +++ b/src/quick/items/qquickitemsmodule.cpp @@ -61,6 +61,7 @@ #include "qquickvisualdatamodel_p.h" #include "qquickgridview_p.h" #include "qquickpathview_p.h" +#include "qquickitemviewtransition_p.h" #include <private/qdeclarativepath_p.h> #include <private/qdeclarativepathinterpolator_p.h> #include "qquickpositioners_p.h" diff --git a/src/quick/items/qquickitemview.cpp b/src/quick/items/qquickitemview.cpp index d5ce567590..481a0d4360 100644 --- a/src/quick/items/qquickitemview.cpp +++ b/src/quick/items/qquickitemview.cpp @@ -46,21 +46,12 @@ QT_BEGIN_NAMESPACE FxViewItem::FxViewItem(QQuickItem *i, bool own) - : item(i), ownItem(own), releaseAfterTransition(false) - , isTransitionTarget(false) - , nextTransitionToSet(false) - , index(-1) - , transition(0) - , nextTransitionType(FxViewItemTransitionManager::NoTransition) + : QQuickViewItem(i), ownItem(own), releaseAfterTransition(false) { } FxViewItem::~FxViewItem() { - if (transition) - transition->m_item = 0; - delete transition; - if (ownItem && item) { item->setParentItem(0); item->deleteLater(); @@ -68,273 +59,6 @@ FxViewItem::~FxViewItem() } } -qreal FxViewItem::itemX() const -{ - if (nextTransitionType != FxViewItemTransitionManager::NoTransition) - return nextTransitionToSet ? nextTransitionTo.x() : item->x(); - else if (transition && transition->isActive()) - return transition->m_toPos.x(); - else - return item->x(); -} - -qreal FxViewItem::itemY() const -{ - // If item is transitioning to some pos, return that dest pos. - // If item was redirected to some new pos before the current transition finished, - // return that new pos. - if (nextTransitionType != FxViewItemTransitionManager::NoTransition) - return nextTransitionToSet ? nextTransitionTo.y() : item->y(); - else if (transition && transition->isActive()) - return transition->m_toPos.y(); - else - return item->y(); -} - -void FxViewItem::setVisible(bool visible) -{ - if (!visible && transitionScheduledOrRunning()) - return; - item->setVisible(visible); -} - -void FxViewItem::setNextTransition(FxViewItemTransitionManager::TransitionType type, bool isTargetItem) -{ - // Don't reset nextTransitionToSet - once it is set, it cannot be changed - // until the animation finishes since the itemX() and itemY() may be used - // to calculate positions for transitions for other items in the view. - nextTransitionType = type; - isTransitionTarget = isTargetItem; -} - -bool FxViewItem::transitionScheduledOrRunning() const -{ - return (transition && transition->isActive()) - || nextTransitionType != FxViewItemTransitionManager::NoTransition; -} - -bool FxViewItem::prepareTransition(const QRectF &viewBounds) -{ - bool doTransition = false; - - switch (nextTransitionType) { - case FxViewItemTransitionManager::NoTransition: - { - return false; - } - case FxViewItemTransitionManager::PopulateTransition: - { - return true; - } - case FxViewItemTransitionManager::AddTransition: - case FxViewItemTransitionManager::RemoveTransition: - // For Add targets, do transition if item is moving into visible area - // For Remove targets, do transition if item is currently in visible area - if (isTransitionTarget) { - doTransition = (nextTransitionType == FxViewItemTransitionManager::AddTransition) - ? viewBounds.intersects(QRectF(nextTransitionTo.x(), nextTransitionTo.y(), item->width(), item->height())) - : viewBounds.intersects(QRectF(item->x(), item->y(), item->width(), item->height())); - if (!doTransition) - item->setPos(nextTransitionTo); - } else { - if (viewBounds.intersects(QRectF(item->x(), item->y(), item->width(), item->height())) - || viewBounds.intersects(QRectF(nextTransitionTo.x(), nextTransitionTo.y(), item->width(), item->height()))) { - doTransition = (nextTransitionTo != item->pos()); - } else { - item->setPos(nextTransitionTo); - } - } - break; - case FxViewItemTransitionManager::MoveTransition: - // do transition if moving from or into visible area - if (nextTransitionTo != item->pos()) { - doTransition = viewBounds.intersects(QRectF(item->x(), item->y(), item->width(), item->height())) - || viewBounds.intersects(QRectF(nextTransitionTo.x(), nextTransitionTo.y(), item->width(), item->height())); - if (!doTransition) - item->setPos(nextTransitionTo); - } - break; - } - - if (!doTransition) - resetTransitionData(); - return doTransition; -} - -void FxViewItem::startTransition() -{ - if (nextTransitionType == FxViewItemTransitionManager::NoTransition) - return; - - if (!transition || transition->m_type != nextTransitionType || transition->m_isTarget != isTransitionTarget) { - delete transition; - transition = new FxViewItemTransitionManager; - } - - // if item is not already moving somewhere, set it to not move anywhere - // so that removed items do not move to the default (0,0) - if (!nextTransitionToSet) - moveTo(item->pos()); - - transition->startTransition(this, nextTransitionType, nextTransitionTo, isTransitionTarget); - nextTransitionType = FxViewItemTransitionManager::NoTransition; -} - -void FxViewItem::stopTransition() -{ - if (transition) { - transition->cancel(); - delete transition; - transition = 0; - } - resetTransitionData(); - finishedTransition(); -} - -void FxViewItem::finishedTransition() -{ - nextTransitionToSet = false; - nextTransitionTo = QPointF(); - - if (releaseAfterTransition) { - QQuickItemViewPrivate *vp = static_cast<QQuickItemViewPrivate*>(QObjectPrivate::get(itemView())); - vp->releasePendingTransition.removeOne(this); - vp->releaseItem(this); - } -} - -void FxViewItem::resetTransitionData() -{ - nextTransitionType = FxViewItemTransitionManager::NoTransition; - isTransitionTarget = false; - nextTransitionTo = QPointF(); - nextTransitionToSet = false; -} - -bool FxViewItem::isPendingRemoval() const -{ - if (nextTransitionType == FxViewItemTransitionManager::RemoveTransition) - return isTransitionTarget; - if (transition && transition->isActive() && transition->m_type == FxViewItemTransitionManager::RemoveTransition) - return transition->m_isTarget; - return false; -} - -void FxViewItem::moveTo(const QPointF &pos) -{ - if (transitionScheduledOrRunning()) { - nextTransitionTo = pos; - nextTransitionToSet = true; - } else { - item->setPos(pos); - } -} - - -FxViewItemTransitionManager::FxViewItemTransitionManager() - : m_active(false), m_item(0), m_type(FxViewItemTransitionManager::NoTransition), m_isTarget(false) -{ -} - -FxViewItemTransitionManager::~FxViewItemTransitionManager() -{ -} - -bool FxViewItemTransitionManager::isActive() const -{ - return m_active; -} - -void FxViewItemTransitionManager::startTransition(FxViewItem *item, FxViewItemTransitionManager::TransitionType type, const QPointF &to, bool isTargetItem) -{ - if (!item) { - qWarning("startTransition(): invalid item"); - return; - } - - QQuickItemViewPrivate *vp = static_cast<QQuickItemViewPrivate*>(QObjectPrivate::get(item->itemView())); - - QDeclarativeTransition *trans = 0; - switch (type) { - case NoTransition: - break; - case PopulateTransition: - trans = vp->populateTransition; - break; - case AddTransition: - trans = isTargetItem ? vp->addTransition : vp->addDisplacedTransition; - break; - case MoveTransition: - trans = isTargetItem ? vp->moveTransition : vp->moveDisplacedTransition; - break; - case RemoveTransition: - trans = isTargetItem ? vp->removeTransition : vp->removeDisplacedTransition; - break; - } - - if (!trans) { - qWarning("QQuickItemView: invalid view transition!"); - return; - } - - m_active = true; - m_item = item; - m_toPos = to; - m_type = type; - m_isTarget = isTargetItem; - - QQuickViewTransitionAttached *attached = - static_cast<QQuickViewTransitionAttached*>(qmlAttachedPropertiesObject<QQuickViewTransitionAttached>(trans)); - if (attached) { - attached->m_index = item->index; - attached->m_item = item->item; - attached->m_destination = to; - switch (type) { - case NoTransition: - break; - case PopulateTransition: - case AddTransition: - attached->m_targetIndexes = vp->addTransitionIndexes; - attached->m_targetItems = vp->addTransitionTargets; - break; - case MoveTransition: - attached->m_targetIndexes = vp->moveTransitionIndexes; - attached->m_targetItems = vp->moveTransitionTargets; - break; - case RemoveTransition: - attached->m_targetIndexes = vp->removeTransitionIndexes; - attached->m_targetItems = vp->removeTransitionTargets; - break; - } - emit attached->indexChanged(); - emit attached->itemChanged(); - emit attached->destinationChanged(); - emit attached->targetIndexesChanged(); - emit attached->targetItemsChanged(); - } - - QDeclarativeStateOperation::ActionList actions; - actions << QDeclarativeAction(item->item, QLatin1String("x"), QVariant(to.x())); - actions << QDeclarativeAction(item->item, QLatin1String("y"), QVariant(to.y())); - - QDeclarativeTransitionManager::transition(actions, trans, item->item); -} - -void FxViewItemTransitionManager::finished() -{ - QDeclarativeTransitionManager::finished(); - - m_active = false; - - if (m_item) - m_item->finishedTransition(); - m_item = 0; - m_toPos.setX(0); - m_toPos.setY(0); - m_type = NoTransition; - m_isTarget = false; -} - QQuickItemViewChangeSet::QQuickItemViewChangeSet() : active(false) @@ -413,363 +137,6 @@ void QQuickItemViewChangeSet::reset() currentRemoved = false; } - -QQuickViewTransitionAttached::QQuickViewTransitionAttached(QObject *parent) - : QObject(parent), m_index(-1), m_item(0) -{ -} -/*! - \qmlclass ViewTransition QQuickViewTransitionAttached - \inqmlmodule QtQuick 2 - \ingroup qml-view-elements - \brief The ViewTransition attached property provides details on items under transition in a view. - - With ListView and GridView, it is possible to specify transitions that should be applied whenever - the items in the view change as a result of modifications to the view's model. They both have the - following properties that can be set to the appropriate transitions to be run for various - operations: - - \list - \o \c add and \c addDisplaced - the transitions to run when items are added to the view - \o \c remove and \c removeDisplaced - the transitions to run when items are removed from the view - \o \c move and \c moveDisplaced - the transitions to run when items are moved within the view - (i.e. as a result of a move operation in the model) - \o \c populate - the transition to run when a view is created, or when the model changes - \endlist - - Such view transitions additionally have access to a ViewTransition attached property that - provides details of the items that are under transition and the operation that triggered the - transition. Since view transitions are run once per item, these details can be used to customise - each transition for each individual item. - - The ViewTransition attached property provides the following properties specific to the item to - which the transition is applied: - - \list - \o ViewTransition.item - the item that is under transition - \o ViewTransition.index - the index of this item - \o ViewTransition.destination - the (x,y) point to which this item is moving for the relevant view operation - \endlist - - In addition, ViewTransition provides properties specific to the items which are the target - of the operation that triggered the transition: - - \list - \o ViewTransition.targetIndexes - the indexes of the target items - \o ViewTransition.targetItems - the target items themselves - \endlist - - View transitions can be written without referring to any of the attributes listed - above. These attributes merely provide extra details that are useful for customising view - transitions. - - Following is an introduction to view transitions and the ways in which the ViewTransition - attached property can be used to augment view transitions. - - - \section2 View transitions: a simple example - - Here is a basic example of the use of view transitions. The view below specifies transitions for - the \c add and \c addDisplaced properties, which will be run when items are added to the view: - - \snippet doc/src/snippets/declarative/viewtransitions/viewtransitions-basic.qml 0 - - When the space key is pressed, adding an item to the model, the new item will fade in and - increase in scale over 400 milliseconds as it is added to the view. Also, any item that is - displaced by the addition of a new item will animate to its new position in the view over - 400 milliseconds, as specified by the \c addDisplaced transition. - - If five items were inserted in succession at index 0, the effect would be this: - - \image viewtransitions-basic.gif - - Notice that the NumberAnimation objects above do not need to specify a \c target to animate - the appropriate item. Also, the NumberAnimation in the \c addTransition does not need to specify - the \c to value to move the item to its correct position in the view. This is because the view - implicitly sets the \c target and \c to values with the correct item and final item position - values if these properties are not explicitly defined. - - At its simplest, a view transition may just animate an item to its new position following a - view operation, just as the \c addDisplaced transition does above, or animate some item properties, - as in the \c add transition above. Additionally, a view transition may make use of the - ViewTransition attached property to customise animation behavior for different items. Following - are some examples of how this can be achieved. - - - \section2 Using the ViewTransition attached property - - As stated, the various ViewTransition properties provide details specific to the individual item - being transitioned as well as the operation that triggered the transition. In the animation above, - five items are inserted in succession at index 0. When the fifth and final insertion takes place, - adding "Item 4" to the view, the \c add transition is run once (for the inserted item) and the - \c addDisplaced transition is run four times (once for each of the four existing items in the view). - - At this point, if we examined the \c addDisplaced transition that was run for the bottom displaced - item ("Item 0"), the ViewTransition property values provided to this transition would be as follows: - - \table - \header - \o Property - \o Value - \o Explanation - \row - \o ViewTransition.item - \o "Item 0" delegate instance - \o The "Item 0" \l Rectangle object itself - \row - \o ViewTransition.index - \o \c int value of 4 - \o The index of "Item 0" within the model following the add operation - \row - \o ViewTransition.destination - \o \l point value of (0, 120) - \o The position that "Item 0" is moving to - \row - \o ViewTransition.targetIndexes - \o \c int array, just contains the integer "0" (zero) - \o The index of "Item 4", the new item added to the view - \row - \o ViewTransition.targetItems - \o object array, just contains the "Item 4" delegate instance - \o The "Item 4" \l Rectangle object - the new item added to the view - \endtable - - The ViewTransition.targetIndexes and ViewTransition.targetItems lists provide the items and - indexes of all delegate instances that are the targets of the relevant operation. For an add - operation, these are all the items that are added into the view; for a remove, these are all - the items removed from the view, and so on. (Note these lists will only contain references to - items that have been created within the view or its cached items; targets that are not within - the visible area of the view or within the item cache will not be accessible.) - - So, while the ViewTransition.item, ViewTransition.index and ViewTransition.destination values - vary for each individual transition that is run, the ViewTransition.targetIndexes and - ViewTransition.targetItems values are the same for every \c add and \c addDisplaced transition - that is triggered by a particular add operation. - - - \section3 Delaying animations based on index - - Since each view transition is run once for each item affected by the transition, the ViewTransition - properties can be used within a transition to define custom behavior for each item's transition. - For example, the ListView in the previous example could use this information to create a ripple-type - effect on the movement of the displaced items. - - This can be achieved by modifying the \c addDisplaced transition so that it delays the animation of - each displaced item based on the difference between its index (provided by ViewTransition.index) - and the first removed index (provided by ViewTransition.targetIndexes): - - \snippet doc/src/snippets/declarative/viewtransitions/viewtransitions-delayedbyindex.qml 0 - - Each displaced item delays its animation by an additional 100 milliseconds, producing a subtle - ripple-type effect when items are displaced by the add, like this: - - \image viewtransitions-delayedbyindex.gif - - - \section3 Animating items to intermediate positions - - The ViewTransition.item property gives a reference to the item to which the transition is being - applied. This can be used to access any of the item's attributes, custom \c property values, - and so on. - - Below is a modification of the \c addDisplaced transition from the previous example. It adds a - ParallelAnimation with nested NumberAnimation objects that reference ViewTransition.item to access - each item's \c x and \c y values at the start of their transitions. This allows each item to - animate to an intermediate position relative to its starting point for the transition, before - animating to its final position in the view: - - \snippet doc/src/snippets/declarative/viewtransitions/viewtransitions-intermediatemove.qml 0 - - Now, a displaced item will first move to a position of (20, 50) relative to its starting - position, and then to its final, correct position in the view: - - \image viewtransitions-intermediatemove.gif - - Since the final NumberAnimation does not specify a \c to value, the view implicitly sets this - value to the item's final position in the view, and so this last animation will move this item - to the correct place. If the transition requires the final position of the item for some calculation, - this is accessible through ViewTransition.destination. - - Instead of using multiple NumberAnimations, you could use a PathAnimation to animate an item over - a curved path. For example, the \c add transition in the previous example could be augmented with - a PathAnimation as follows: to animate newly added items along a path: - - \snippet doc/src/snippets/declarative/viewtransitions/viewtransitions-pathanim.qml 0 - - This animates newly added items along a path. Notice that each path is specified relative to - each item's final destination point, so that items inserted at different indexes start their - paths from different positions: - - \image viewtransitions-pathanim.gif - - - \section2 Handling interrupted animations - - A view transition may be interrupted at any time if a different view transition needs to be - applied while the original transition is in progress. For example, say Item A is inserted at index 0 - and undergoes an "add" transition; then, Item B is inserted at index 0 in quick succession before - Item A's transition has finished. Since Item B is inserted before Item A, it will displace Item - A, causing the view to interrupt Item A's "add" transition mid-way and start an "addDisplaced" - transition on Item A instead. - - For simple animations that simply animate an item's movement to its final destination, this - interruption is unlikely to require additional consideration. However, if a transition changes other - properties, this interruption may cause unwanted side effects. Consider the first example on this - page, repeated below for convenience: - - \snippet doc/src/snippets/declarative/viewtransitions/viewtransitions-basic.qml 0 - - If multiple items are added in rapid succession, without waiting for a previous transition - to finish, this is the result: - - \image viewtransitions-interruptedbad.gif - - Each newly added item undergoes an \c add transition, but before the transition can finish, - another item is added, displacing the previously added item. Because of this, the \c add - transition on the previously added item is interrupted and an \c addDisplaced transition is - started on the item instead. Due to the interruption, the \c opacity and \c scale animations - have not completed, thus producing items with opacity and scale that are below 1.0. - - To fix this, the \c addDisplaced transition should additionally ensure the item properties are - set to the end values specified in the \c add transition, effectively resetting these values - whenever an item is displaced. In this case, it means setting the item opacity and scale to 1.0: - - \snippet doc/src/snippets/declarative/viewtransitions/viewtransitions-interruptedgood.qml 0 - - Now, when an item's \c add transition is interrupted, its opacity and scale are animated to 1.0 - upon displacement, avoiding the erroneous visual effects from before: - - \image viewtransitions-interruptedgood.gif - - The same principle applies to any combination of view transitions. An added item may be moved - before its add transition finishes, or a moved item may be removed before its moved transition - finishes, and so on; so, the rule of thumb is that every transition should handle the same set of - properties. - - - \section2 Restrictions regarding ScriptAction - - When a view transition is initialized, any property bindings that refer to the ViewTransition - attached property are evaluated in preparation for the transition. Due to the nature of the - internal construction of a view transition, the attributes of the ViewTransition attached - property are only valid for the relevant item when the transition is initialized, and may not be - valid when the transition is actually run. - - Therefore, a ScriptAction within a view transition should not refer to the ViewTransition - attached property, as it may not refer to the expected values at the time that the ScriptAction - is actually invoked. Consider the following example: - - \snippet doc/src/snippets/declarative/viewtransitions/viewtransitions-scriptactionbad.qml 0 - - When the space key is pressed, three items are moved from index 5 to index 1. For each moved - item, the \c moveTransition sequence presumably animates the item's color to "yellow", then - animates it to its final position, then changes the item color back to "lightsteelblue" using a - ScriptAction. However, when run, the transition does not produce the intended result: - - \image viewtransitions-scriptactionbad.gif - - Only the last moved item is returned to the "lightsteelblue" color; the others remain yellow. This - is because the ScriptAction is not run until after the transition has already been initialized, by - which time the ViewTransition.item value has changed to refer to a different item; the item that - the script had intended to refer to is not the one held by ViewTransition.item at the time the - ScriptAction is actually invoked. - - In this instance, to avoid this issue, the view could set the property using a PropertyAction - instead: - - \snippet doc/src/snippets/declarative/viewtransitions/viewtransitions-scriptactiongood.qml 0 - - When the transition is initialized, the PropertyAction \c target will be set to the respective - ViewTransition.item for the transition and will later run with the correct item target as - expected. - */ - -/*! - \qmlattachedproperty list QtQuick2::ViewTransition::index - - This attached property holds the index of the item that is being - transitioned. - - Note that if the item is being moved, this property holds the index that - the item is moving to, not from. -*/ - -/*! - \qmlattachedproperty list QtQuick2::ViewTransition::item - - This attached property holds the the item that is being transitioned. - - \warning This item should not be kept and referred to outside of the transition - as it may become invalid as the view changes. -*/ - -/*! - \qmlattachedproperty list QtQuick2::ViewTransition::destination - - This attached property holds the final destination position for the transitioned - item within the view. - - This property value is a \l point with \c x and \c y properties. -*/ - -/*! - \qmlattachedproperty list QtQuick2::ViewTransition::targetIndexes - - This attached property holds a list of the indexes of the items in view - that are the target of the relevant operation. - - The targets are the items that are the subject of the operation. For - an add operation, these are the items being added; for a remove, these - are the items being removed; for a move, these are the items being - moved. - - For example, if the transition was triggered by an insert operation - that added two items at index 1 and 2, this targetIndexes list would - have the value [1,2]. - - \note The targetIndexes list only contains the indexes of items that are actually - in view, or will be in the view once the relevant operation completes. - - \sa QtQuick2::ViewTransition::targetIndexes -*/ - -/*! - \qmlattachedproperty list QtQuick2::ViewTransition::targetItems - - This attached property holds the list of items in view that are the - target of the relevant operation. - - The targets are the items that are the subject of the operation. For - an add operation, these are the items being added; for a remove, these - are the items being removed; for a move, these are the items being - moved. - - For example, if the transition was triggered by an insert operation - that added two items at index 1 and 2, this targetItems list would - contain these two items. - - \note The targetItems list only contains items that are actually - in view, or will be in the view once the relevant operation completes. - - \warning The objects in this list should not be kept and referred to - outside of the transition as the items may become invalid. The targetItems - are only valid when the Transition is initially created; this also means - they should not be used by ScriptAction objects in the Transition, which are - not evaluated until the transition is run. - - \sa QtQuick2::ViewTransition::targetIndexes -*/ -QDeclarativeListProperty<QObject> QQuickViewTransitionAttached::targetItems() -{ - return QDeclarativeListProperty<QObject>(this, m_targetItems); -} - -QQuickViewTransitionAttached *QQuickViewTransitionAttached::qmlAttachedProperties(QObject *obj) -{ - return new QQuickViewTransitionAttached(obj); -} - - //----------------------------------- QQuickItemView::QQuickItemView(QQuickFlickablePrivate &dd, QQuickItem *parent) @@ -868,9 +235,9 @@ void QQuickItemView::setModel(const QVariant &model) } d->updateViewport(); - if (d->populateTransition) { + if (d->transitioner && d->transitioner->populateTransition) { d->forceLayout = true; - d->usePopulateTransition = true; + d->transitioner->setPopulateTransitionEnabled(true); polish(); } } @@ -1229,14 +596,15 @@ void QQuickItemView::setHighlightMoveDuration(int duration) QDeclarativeTransition *QQuickItemView::populateTransition() const { Q_D(const QQuickItemView); - return d->populateTransition; + return d->transitioner ? d->transitioner->populateTransition : 0; } void QQuickItemView::setPopulateTransition(QDeclarativeTransition *transition) { Q_D(QQuickItemView); - if (d->populateTransition != transition) { - d->populateTransition = transition; + d->createTransitioner(); + if (d->transitioner->populateTransition != transition) { + d->transitioner->populateTransition = transition; emit populateTransitionChanged(); } } @@ -1244,14 +612,15 @@ void QQuickItemView::setPopulateTransition(QDeclarativeTransition *transition) QDeclarativeTransition *QQuickItemView::addTransition() const { Q_D(const QQuickItemView); - return d->addTransition; + return d->transitioner ? d->transitioner->addTransition : 0; } void QQuickItemView::setAddTransition(QDeclarativeTransition *transition) { Q_D(QQuickItemView); - if (d->addTransition != transition) { - d->addTransition = transition; + d->createTransitioner(); + if (d->transitioner->addTransition != transition) { + d->transitioner->addTransition = transition; emit addTransitionChanged(); } } @@ -1259,14 +628,15 @@ void QQuickItemView::setAddTransition(QDeclarativeTransition *transition) QDeclarativeTransition *QQuickItemView::addDisplacedTransition() const { Q_D(const QQuickItemView); - return d->addDisplacedTransition; + return d->transitioner ? d->transitioner->addDisplacedTransition : 0; } void QQuickItemView::setAddDisplacedTransition(QDeclarativeTransition *transition) { Q_D(QQuickItemView); - if (d->addDisplacedTransition != transition) { - d->addDisplacedTransition = transition; + d->createTransitioner(); + if (d->transitioner->addDisplacedTransition != transition) { + d->transitioner->addDisplacedTransition = transition; emit addDisplacedTransitionChanged(); } } @@ -1274,14 +644,15 @@ void QQuickItemView::setAddDisplacedTransition(QDeclarativeTransition *transitio QDeclarativeTransition *QQuickItemView::moveTransition() const { Q_D(const QQuickItemView); - return d->moveTransition; + return d->transitioner ? d->transitioner->moveTransition : 0; } void QQuickItemView::setMoveTransition(QDeclarativeTransition *transition) { Q_D(QQuickItemView); - if (d->moveTransition != transition) { - d->moveTransition = transition; + d->createTransitioner(); + if (d->transitioner->moveTransition != transition) { + d->transitioner->moveTransition = transition; emit moveTransitionChanged(); } } @@ -1289,14 +660,15 @@ void QQuickItemView::setMoveTransition(QDeclarativeTransition *transition) QDeclarativeTransition *QQuickItemView::moveDisplacedTransition() const { Q_D(const QQuickItemView); - return d->moveDisplacedTransition; + return d->transitioner ? d->transitioner->moveDisplacedTransition : 0; } void QQuickItemView::setMoveDisplacedTransition(QDeclarativeTransition *transition) { Q_D(QQuickItemView); - if (d->moveDisplacedTransition != transition) { - d->moveDisplacedTransition = transition; + d->createTransitioner(); + if (d->transitioner->moveDisplacedTransition != transition) { + d->transitioner->moveDisplacedTransition = transition; emit moveDisplacedTransitionChanged(); } } @@ -1304,14 +676,15 @@ void QQuickItemView::setMoveDisplacedTransition(QDeclarativeTransition *transiti QDeclarativeTransition *QQuickItemView::removeTransition() const { Q_D(const QQuickItemView); - return d->removeTransition; + return d->transitioner ? d->transitioner->removeTransition : 0; } void QQuickItemView::setRemoveTransition(QDeclarativeTransition *transition) { Q_D(QQuickItemView); - if (d->removeTransition != transition) { - d->removeTransition = transition; + d->createTransitioner(); + if (d->transitioner->removeTransition != transition) { + d->transitioner->removeTransition = transition; emit removeTransitionChanged(); } } @@ -1319,14 +692,15 @@ void QQuickItemView::setRemoveTransition(QDeclarativeTransition *transition) QDeclarativeTransition *QQuickItemView::removeDisplacedTransition() const { Q_D(const QQuickItemView); - return d->removeDisplacedTransition; + return d->transitioner ? d->transitioner->removeDisplacedTransition : 0; } void QQuickItemView::setRemoveDisplacedTransition(QDeclarativeTransition *transition) { Q_D(QQuickItemView); - if (d->removeDisplacedTransition != transition) { - d->removeDisplacedTransition = transition; + d->createTransitioner(); + if (d->transitioner->removeDisplacedTransition != transition) { + d->transitioner->removeDisplacedTransition = transition; emit removeDisplacedTransitionChanged(); } } @@ -1465,64 +839,6 @@ void QQuickItemViewPrivate::applyPendingChanges() layout(); } -bool QQuickItemViewPrivate::canTransition(FxViewItemTransitionManager::TransitionType type, bool asTarget) const -{ - switch (type) { - case FxViewItemTransitionManager::NoTransition: - break; - case FxViewItemTransitionManager::PopulateTransition: - return usePopulateTransition - && populateTransition && populateTransition->enabled(); - case FxViewItemTransitionManager::AddTransition: - if (asTarget) - return addTransition && addTransition->enabled(); - else - return addDisplacedTransition && addDisplacedTransition->enabled(); - case FxViewItemTransitionManager::MoveTransition: - if (asTarget) - return moveTransition && moveTransition->enabled(); - else - return moveDisplacedTransition && moveDisplacedTransition->enabled(); - case FxViewItemTransitionManager::RemoveTransition: - if (asTarget) - return removeTransition && removeTransition->enabled(); - else - return removeDisplacedTransition && removeDisplacedTransition->enabled(); - } - return false; -} - -bool QQuickItemViewPrivate::hasItemTransitions() const -{ - return canTransition(FxViewItemTransitionManager::PopulateTransition, true) - || canTransition(FxViewItemTransitionManager::AddTransition, true) - || canTransition(FxViewItemTransitionManager::AddTransition, false) - || canTransition(FxViewItemTransitionManager::MoveTransition, true) - || canTransition(FxViewItemTransitionManager::MoveTransition, false) - || canTransition(FxViewItemTransitionManager::RemoveTransition, true) - || canTransition(FxViewItemTransitionManager::RemoveTransition, false); -} - -void QQuickItemViewPrivate::transitionNextReposition(FxViewItem *item, FxViewItemTransitionManager::TransitionType type, bool isTarget) -{ - bool matchedTransition = false; - if (type == FxViewItemTransitionManager::AddTransition) { - // don't run add transitions for added items while populating - matchedTransition = !usePopulateTransition && canTransition(type, isTarget); - } else { - matchedTransition = canTransition(type, isTarget); - } - - if (matchedTransition) { - item->setNextTransition(type, isTarget); - } else { - // the requested transition type is not valid, but the item is scheduled/in another - // transition, so cancel it to allow the item to move directly to the correct pos - if (item->transitionScheduledOrRunning()) - item->stopTransition(); - } -} - int QQuickItemViewPrivate::findMoveKeyIndex(QDeclarativeChangeSet::MoveKey key, const QVector<QDeclarativeChangeSet::Remove> &changes) const { for (int i=0; i<changes.count(); i++) { @@ -1583,8 +899,8 @@ void QQuickItemViewPrivate::itemGeometryChanged(QQuickItem *item, const QRectF & // start new transitions bool prevDisableLayout = disableLayout; if (!disableLayout) { - FxViewItem *actualItem = hasItemTransitions() ? visibleItem(currentIndex) : 0; - if (actualItem && actualItem->transition && actualItem->transition->isRunning()) + FxViewItem *actualItem = transitioner ? visibleItem(currentIndex) : 0; + if (actualItem && actualItem->transitionRunning()) disableLayout = true; } updateHighlight(); @@ -1602,7 +918,7 @@ void QQuickItemView::destroyRemoved() it != d->visibleItems.end();) { FxViewItem *item = *it; if (item->index == -1 && item->attached->delayRemove() == false) { - if (d->canTransition(FxViewItemTransitionManager::RemoveTransition, true)) { + if (d->transitioner && d->transitioner->canTransition(QQuickItemViewTransitioner::RemoveTransition, true)) { // don't remove from visibleItems until next layout() d->runDelayedRemoveTransition = true; QObject::disconnect(item->attached, SIGNAL(delayRemoveChanged()), this, SLOT(destroyRemoved())); @@ -1626,7 +942,8 @@ void QQuickItemView::modelUpdated(const QDeclarativeChangeSet &changeSet, bool r { Q_D(QQuickItemView); if (reset) { - d->usePopulateTransition = true; + if (d->transitioner) + d->transitioner->setPopulateTransitionEnabled(true); d->moveReason = QQuickItemViewPrivate::SetIndex; d->regenerate(); if (d->highlight && d->currentItem) { @@ -1636,7 +953,7 @@ void QQuickItemView::modelUpdated(const QDeclarativeChangeSet &changeSet, bool r } d->moveReason = QQuickItemViewPrivate::Other; emit countChanged(); - if (d->populateTransition) { + if (d->transitioner && d->transitioner->populateTransition) { d->forceLayout = true; polish(); } @@ -1936,7 +1253,8 @@ void QQuickItemView::componentComplete() d->updateFooter(); d->updateViewport(); d->setPosition(d->contentStartOffset()); - d->usePopulateTransition = true; + if (d->transitioner) + d->transitioner->setPopulateTransitionEnabled(true); if (d->isValid()) { d->refill(); @@ -1972,19 +1290,21 @@ QQuickItemViewPrivate::QQuickItemViewPrivate() , highlightRangeStart(0), highlightRangeEnd(0) , highlightMoveDuration(150) , headerComponent(0), header(0), footerComponent(0), footer(0) - , populateTransition(0) - , addTransition(0), addDisplacedTransition(0) - , moveTransition(0), moveDisplacedTransition(0) - , removeTransition(0), removeDisplacedTransition(0) + , transitioner(0) , minExtent(0), maxExtent(0) , ownModel(false), wrap(false) , disableLayout(false), inViewportMoved(false), forceLayout(false), currentIndexCleared(false) , haveHighlightRange(false), autoHighlight(true), highlightRangeStartValid(false), highlightRangeEndValid(false) , fillCacheBuffer(false), inRequest(false), requestedAsync(false) - , usePopulateTransition(false), runDelayedRemoveTransition(false) + , runDelayedRemoveTransition(false) { } +QQuickItemViewPrivate::~QQuickItemViewPrivate() +{ + delete transitioner; +} + bool QQuickItemViewPrivate::isValid() const { return model && model->count() && model->isValid(); @@ -2267,15 +1587,17 @@ void QQuickItemViewPrivate::layout() if (!isValid() && !visibleItems.count()) { clear(); setPosition(contentStartOffset()); - usePopulateTransition = false; + if (transitioner) + transitioner->setPopulateTransitionEnabled(false); return; } - if (runDelayedRemoveTransition && canTransition(FxViewItemTransitionManager::RemoveTransition, false)) { + if (runDelayedRemoveTransition && transitioner + && transitioner->canTransition(QQuickItemViewTransitioner::RemoveTransition, false)) { // assume that any items moving now are moving due to the remove - if they schedule // a different transition, that will override this one anyway for (int i=0; i<visibleItems.count(); i++) - transitionNextReposition(visibleItems[i], FxViewItemTransitionManager::RemoveTransition, false); + transitioner->transitionNextReposition(visibleItems[i], QQuickItemViewTransitioner::RemoveTransition, false); } ChangeResult insertionPosChanges; @@ -2289,9 +1611,9 @@ void QQuickItemViewPrivate::layout() } forceLayout = false; - if (canTransition(FxViewItemTransitionManager::PopulateTransition, true)) { + if (transitioner && transitioner->canTransition(QQuickItemViewTransitioner::PopulateTransition, true)) { for (int i=0; i<visibleItems.count(); i++) - transitionNextReposition(visibleItems.at(i), FxViewItemTransitionManager::PopulateTransition, true); + transitioner->transitionNextReposition(visibleItems.at(i), QQuickItemViewTransitioner::PopulateTransition, true); } layoutVisibleItems(); @@ -2310,11 +1632,11 @@ void QQuickItemViewPrivate::layout() updateViewport(); updateUnrequestedPositions(); - if (hasItemTransitions()) { + if (transitioner) { // items added in the last refill() may need to be transitioned in - e.g. a remove // causes items to slide up into view - if (canTransition(FxViewItemTransitionManager::MoveTransition, false) - || canTransition(FxViewItemTransitionManager::RemoveTransition, false)) { + if (transitioner->canTransition(QQuickItemViewTransitioner::MoveTransition, false) + || transitioner->canTransition(QQuickItemViewTransitioner::RemoveTransition, false)) { translateAndTransitionItemsAfter(lastIndexInView, insertionPosChanges, removalPosChanges); } @@ -2324,8 +1646,7 @@ void QQuickItemViewPrivate::layout() for (QList<FxViewItem*>::Iterator it = releasePendingTransition.begin(); it != releasePendingTransition.end(); ) { FxViewItem *item = *it; - if ( (item->transition && item->transition->isActive()) - || prepareNonVisibleItemTransition(item, viewBounds)) { + if (item->transitionRunning() || prepareNonVisibleItemTransition(item, viewBounds)) { ++it; } else { releaseItem(item); @@ -2334,11 +1655,12 @@ void QQuickItemViewPrivate::layout() } for (int i=0; i<visibleItems.count(); i++) - visibleItems[i]->startTransition(); + visibleItems[i]->startTransition(transitioner); for (int i=0; i<releasePendingTransition.count(); i++) - releasePendingTransition[i]->startTransition(); + releasePendingTransition[i]->startTransition(transitioner); + transitioner->setPopulateTransitionEnabled(false); } - usePopulateTransition = false; + runDelayedRemoveTransition = false; } @@ -2441,7 +1763,7 @@ bool QQuickItemViewPrivate::applyModelChanges(ChangeResult *totalInsertionResult // for each item that was moved directly into the view as a result of a move(), // find the index it was moved from in order to set its initial position, so that we // can transition it from this "original" position to its new position in the view - if (canTransition(FxViewItemTransitionManager::MoveTransition, true)) { + if (transitioner && transitioner->canTransition(QQuickItemViewTransitioner::MoveTransition, true)) { for (int i=0; i<movingIntoView.count(); i++) { int fromIndex = findMoveKeyIndex(movingIntoView[i].moveKey, removals); if (fromIndex >= 0) { @@ -2449,7 +1771,7 @@ bool QQuickItemViewPrivate::applyModelChanges(ChangeResult *totalInsertionResult repositionItemAt(movingIntoView[i].item, fromIndex, -totalInsertionResult->sizeChangesAfterVisiblePos); else repositionItemAt(movingIntoView[i].item, fromIndex, totalInsertionResult->sizeChangesAfterVisiblePos); - transitionNextReposition(movingIntoView[i].item, FxViewItemTransitionManager::MoveTransition, true); + transitioner->transitionNextReposition(movingIntoView[i].item, QQuickItemViewTransitioner::MoveTransition, true); } } } @@ -2513,10 +1835,12 @@ bool QQuickItemViewPrivate::applyRemovalChange(const QDeclarativeChangeSet::Remo } else if (item->index >= removal.index + removal.count) { // after removed items item->index -= removal.count; - if (removal.isMove()) - transitionNextReposition(item, FxViewItemTransitionManager::MoveTransition, false); - else - transitionNextReposition(item, FxViewItemTransitionManager::RemoveTransition, false); + if (transitioner) { + if (removal.isMove()) + transitioner->transitionNextReposition(item, QQuickItemViewTransitioner::MoveTransition, false); + else + transitioner->transitionNextReposition(item, QQuickItemViewTransitioner::RemoveTransition, false); + } ++it; } else { // removed item @@ -2550,7 +1874,8 @@ void QQuickItemViewPrivate::removeItem(FxViewItem *item, const QDeclarativeChang } if (removal.isMove()) { currentChanges.removedItems.insert(removal.moveKey(item->index), item); - transitionNextReposition(item, FxViewItemTransitionManager::MoveTransition, true); + if (transitioner) + transitioner->transitionNextReposition(item, QQuickItemViewTransitioner::MoveTransition, true); } else { // track item so it is released later currentChanges.removedItems.insertMulti(QDeclarativeChangeSet::MoveKey(), item); @@ -2598,16 +1923,24 @@ void QQuickItemViewPrivate::repositionFirstItem(FxViewItem *prevVisibleItemsFirs } } +void QQuickItemViewPrivate::createTransitioner() +{ + if (!transitioner) { + transitioner = new QQuickItemViewTransitioner; + transitioner->setChangeListener(this); + } +} + void QQuickItemViewPrivate::prepareVisibleItemTransitions() { Q_Q(QQuickItemView); - if (!hasItemTransitions()) + if (!transitioner) return; - addTransitionIndexes.clear(); - addTransitionTargets.clear(); - moveTransitionIndexes.clear(); - moveTransitionTargets.clear(); + transitioner->addTransitionIndexes.clear(); + transitioner->addTransitionTargets.clear(); + transitioner->moveTransitionIndexes.clear(); + transitioner->moveTransitionTargets.clear(); QRectF viewBounds(0, position(), q->width(), q->height()); for (int i=0; i<visibleItems.count(); i++) { @@ -2616,18 +1949,18 @@ void QQuickItemViewPrivate::prepareVisibleItemTransitions() continue; if (visibleItems[i]->isTransitionTarget) { switch (visibleItems[i]->nextTransitionType) { - case FxViewItemTransitionManager::NoTransition: + case QQuickItemViewTransitioner::NoTransition: break; - case FxViewItemTransitionManager::PopulateTransition: - case FxViewItemTransitionManager::AddTransition: - addTransitionIndexes.append(visibleItems[i]->index); - addTransitionTargets.append(visibleItems[i]->item); + case QQuickItemViewTransitioner::PopulateTransition: + case QQuickItemViewTransitioner::AddTransition: + transitioner->addTransitionIndexes.append(visibleItems[i]->index); + transitioner->addTransitionTargets.append(visibleItems[i]->item); break; - case FxViewItemTransitionManager::MoveTransition: - moveTransitionIndexes.append(visibleItems[i]->index); - moveTransitionTargets.append(visibleItems[i]->item); + case QQuickItemViewTransitioner::MoveTransition: + transitioner->moveTransitionIndexes.append(visibleItems[i]->index); + transitioner->moveTransitionTargets.append(visibleItems[i]->item); break; - case FxViewItemTransitionManager::RemoveTransition: + case QQuickItemViewTransitioner::RemoveTransition: // removed targets won't be in visibleItems, handle these // in prepareNonVisibleItemTransition() break; @@ -2638,10 +1971,13 @@ void QQuickItemViewPrivate::prepareVisibleItemTransitions() void QQuickItemViewPrivate::prepareRemoveTransitions(QHash<QDeclarativeChangeSet::MoveKey, FxViewItem *> *removedItems) { - removeTransitionIndexes.clear(); - removeTransitionTargets.clear(); + if (!transitioner) + return; - if (canTransition(FxViewItemTransitionManager::RemoveTransition, true)) { + transitioner->removeTransitionIndexes.clear(); + transitioner->removeTransitionTargets.clear(); + + if (transitioner->canTransition(QQuickItemViewTransitioner::RemoveTransition, true)) { for (QHash<QDeclarativeChangeSet::MoveKey, FxViewItem *>::Iterator it = removedItems->begin(); it != removedItems->end(); ) { bool isRemove = it.key().moveId < 0; @@ -2649,7 +1985,7 @@ void QQuickItemViewPrivate::prepareRemoveTransitions(QHash<QDeclarativeChangeSet FxViewItem *item = *it; item->releaseAfterTransition = true; releasePendingTransition.append(item); - transitionNextReposition(item, FxViewItemTransitionManager::RemoveTransition, true); + transitioner->transitionNextReposition(item, QQuickItemViewTransitioner::RemoveTransition, true); it = removedItems->erase(it); } else { ++it; @@ -2665,18 +2001,21 @@ bool QQuickItemViewPrivate::prepareNonVisibleItemTransition(FxViewItem *item, co // removed, or moved to outside of the view, as well as those that are // displaced to a position outside of the view due to an insert or move. - if (item->nextTransitionType == FxViewItemTransitionManager::MoveTransition) + if (!transitioner) + return false; + + if (item->nextTransitionType == QQuickItemViewTransitioner::MoveTransition) repositionItemAt(item, item->index, 0); if (!item->prepareTransition(viewBounds)) return false; if (item->isTransitionTarget) { - if (item->nextTransitionType == FxViewItemTransitionManager::MoveTransition) { - moveTransitionIndexes.append(item->index); - moveTransitionTargets.append(item->item); - } else if (item->nextTransitionType == FxViewItemTransitionManager::RemoveTransition) { - removeTransitionIndexes.append(item->index); - removeTransitionTargets.append(item->item); + if (item->nextTransitionType == QQuickItemViewTransitioner::MoveTransition) { + transitioner->moveTransitionIndexes.append(item->index); + transitioner->moveTransitionTargets.append(item->item); + } else if (item->nextTransitionType == QQuickItemViewTransitioner::RemoveTransition) { + transitioner->removeTransitionIndexes.append(item->index); + transitioner->removeTransitionTargets.append(item->item); } } @@ -2684,6 +2023,15 @@ bool QQuickItemViewPrivate::prepareNonVisibleItemTransition(FxViewItem *item, co return true; } +void QQuickItemViewPrivate::viewItemTransitionFinished(QQuickViewItem *i) +{ + FxViewItem *item = static_cast<FxViewItem *>(i); + if (item->releaseAfterTransition) { + releasePendingTransition.removeOne(item); + releaseItem(item); + } +} + /* This may return 0 if the item is being created asynchronously. When the item becomes available, refill() will be called and the item diff --git a/src/quick/items/qquickitemview_p.h b/src/quick/items/qquickitemview_p.h index 0d3cd1c3ce..63262f32ab 100644 --- a/src/quick/items/qquickitemview_p.h +++ b/src/quick/items/qquickitemview_p.h @@ -324,53 +324,9 @@ public: QString m_nextSection; }; -class QQuickViewTransitionAttached : public QObject -{ - Q_OBJECT - - Q_PROPERTY(int index READ index NOTIFY indexChanged) - Q_PROPERTY(QQuickItem* item READ item NOTIFY itemChanged) - Q_PROPERTY(QPointF destination READ destination NOTIFY destinationChanged) - - Q_PROPERTY(QList<int> targetIndexes READ targetIndexes NOTIFY targetIndexesChanged) - Q_PROPERTY(QDeclarativeListProperty<QObject> targetItems READ targetItems NOTIFY targetItemsChanged) - -public: - QQuickViewTransitionAttached(QObject *parent); - - int index() const { return m_index; } - QQuickItem *item() const { return m_item; } - QPointF destination() const { return m_destination; } - - QList<int> targetIndexes() const { return m_targetIndexes; } - QDeclarativeListProperty<QObject> targetItems(); - - static QQuickViewTransitionAttached *qmlAttachedProperties(QObject *); - -signals: - void indexChanged(); - void itemChanged(); - void destinationChanged(); - - void targetIndexesChanged(); - void targetItemsChanged(); - -private: - friend class FxViewItemTransitionManager; - int m_index; - QQuickItem *m_item; - QPointF m_destination; - - QList<int> m_targetIndexes; - QList<QObject *> m_targetItems; -}; - QT_END_NAMESPACE -QML_DECLARE_TYPE(QQuickViewTransitionAttached) -QML_DECLARE_TYPEINFO(QQuickViewTransitionAttached, QML_HAS_ATTACHED_PROPERTIES) - QT_END_HEADER #endif // QQUICKITEMVIEW_P_H diff --git a/src/quick/items/qquickitemview_p_p.h b/src/quick/items/qquickitemview_p_p.h index fce6e4eba5..57860a43c6 100644 --- a/src/quick/items/qquickitemview_p_p.h +++ b/src/quick/items/qquickitemview_p_p.h @@ -43,10 +43,10 @@ #define QQUICKITEMVIEW_P_P_H #include "qquickitemview_p.h" +#include "qquickitemviewtransition_p.h" #include "qquickflickable_p_p.h" #include "qquickvisualdatamodel_p.h" #include "qquickvisualitemmodel_p.h" -#include <private/qdeclarativetransitionmanager_p_p.h> #include <private/qdeclarativechangeset_p.h> @@ -57,55 +57,12 @@ QT_BEGIN_NAMESPACE QT_MODULE(Declarative) -class FxViewItem; -class FxViewItemTransitionManager : public QDeclarativeTransitionManager -{ -public: - enum TransitionType { - NoTransition, - PopulateTransition, - AddTransition, - MoveTransition, - RemoveTransition - }; - - FxViewItemTransitionManager(); - ~FxViewItemTransitionManager(); - - bool isActive() const; - void startTransition(FxViewItem *item, FxViewItemTransitionManager::TransitionType type, const QPointF &to, bool isTargetItem); - - bool m_active; - FxViewItem *m_item; - QPointF m_toPos; - FxViewItemTransitionManager::TransitionType m_type; - bool m_isTarget; - -protected: - virtual void finished(); -}; - - -class FxViewItem +class FxViewItem : public QQuickViewItem { public: FxViewItem(QQuickItem *, bool own); virtual ~FxViewItem(); - qreal itemX() const; - qreal itemY() const; - - void setVisible(bool visible); - - void setNextTransition(FxViewItemTransitionManager::TransitionType, bool isTargetItem); - bool transitionScheduledOrRunning() const; - bool isPendingRemoval() const; - - bool prepareTransition(const QRectF &viewBounds); - void startTransition(); - void stopTransition(); - void finishedTransition(); - // these are positions and sizes along the current direction of scrolling/flicking virtual qreal position() const = 0; virtual qreal endPosition() const = 0; @@ -113,23 +70,10 @@ public: virtual qreal sectionSize() const = 0; virtual bool contains(qreal x, qreal y) const = 0; - virtual QQuickItemView *itemView() const = 0; - QQuickItem *item; + QQuickItemViewAttached *attached; bool ownItem; bool releaseAfterTransition; - bool isTransitionTarget; - bool nextTransitionToSet; - int index; - QQuickItemViewAttached *attached; - - FxViewItemTransitionManager *transition; - QPointF nextTransitionTo; - FxViewItemTransitionManager::TransitionType nextTransitionType; - -protected: - void moveTo(const QPointF &pos); - void resetTransitionData(); }; @@ -155,11 +99,12 @@ public: }; -class QQuickItemViewPrivate : public QQuickFlickablePrivate +class QQuickItemViewPrivate : public QQuickFlickablePrivate, public QQuickItemViewTransitionChangeListener { Q_DECLARE_PUBLIC(QQuickItemView) public: QQuickItemViewPrivate(); + ~QQuickItemViewPrivate(); struct ChangeResult { QDeclarativeNullableValue<qreal> visiblePos; @@ -243,13 +188,12 @@ public: void repositionFirstItem(FxViewItem *prevVisibleItemsFirst, qreal prevVisibleItemsFirstPos, FxViewItem *prevFirstVisible, ChangeResult *insertionResult, ChangeResult *removalResult); + void createTransitioner(); void prepareVisibleItemTransitions(); void prepareRemoveTransitions(QHash<QDeclarativeChangeSet::MoveKey, FxViewItem *> *removedItems); bool prepareNonVisibleItemTransition(FxViewItem *item, const QRectF &viewBounds); + virtual void viewItemTransitionFinished(QQuickViewItem *item); - bool canTransition(FxViewItemTransitionManager::TransitionType type, bool asTarget) const; - bool hasItemTransitions() const; - void transitionNextReposition(FxViewItem *item, FxViewItemTransitionManager::TransitionType type, bool isTarget); int findMoveKeyIndex(QDeclarativeChangeSet::MoveKey key, const QVector<QDeclarativeChangeSet::Remove> &changes) const; void checkVisible() const; @@ -281,7 +225,6 @@ public: FxViewItem *requestedItem; QQuickItemViewChangeSet currentChanges; - // XXX split into struct QDeclarativeComponent *highlightComponent; FxViewItem *highlight; int highlightRange; // enum value @@ -294,27 +237,13 @@ public: QDeclarativeComponent *footerComponent; FxViewItem *footer; - QDeclarativeTransition *populateTransition; - QDeclarativeTransition *addTransition; - QDeclarativeTransition *addDisplacedTransition; - QDeclarativeTransition *moveTransition; - QDeclarativeTransition *moveDisplacedTransition; - QDeclarativeTransition *removeTransition; - QDeclarativeTransition *removeDisplacedTransition; - - QList<int> addTransitionIndexes; - QList<int> moveTransitionIndexes; - QList<int> removeTransitionIndexes; - QList<QObject *> addTransitionTargets; - QList<QObject *> moveTransitionTargets; - QList<QObject *> removeTransitionTargets; - struct MovedItem { FxViewItem *item; QDeclarativeChangeSet::MoveKey moveKey; MovedItem(FxViewItem *i, QDeclarativeChangeSet::MoveKey k) : item(i), moveKey(k) {} }; + QQuickItemViewTransitioner *transitioner; QList<FxViewItem *> releasePendingTransition; mutable qreal minExtent; @@ -333,7 +262,6 @@ public: bool fillCacheBuffer : 1; bool inRequest : 1; bool requestedAsync : 1; - bool usePopulateTransition : 1; bool runDelayedRemoveTransition : 1; protected: diff --git a/src/quick/items/qquickitemviewtransition.cpp b/src/quick/items/qquickitemviewtransition.cpp new file mode 100644 index 0000000000..3e3a99f553 --- /dev/null +++ b/src/quick/items/qquickitemviewtransition.cpp @@ -0,0 +1,770 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qquickitemviewtransition_p.h" +#include <QtQuick/qquickitem.h> +#include <QtQuick/private/qdeclarativetransition_p.h> + +QT_BEGIN_NAMESPACE + + +class QQuickItemViewTransitionJob : public QDeclarativeTransitionManager +{ +public: + QQuickItemViewTransitionJob(QQuickItemViewTransitioner *transitioner); + ~QQuickItemViewTransitionJob(); + + void startTransition(QQuickViewItem *item, QQuickItemViewTransitioner::TransitionType type, const QPointF &to, bool isTargetItem); + + QQuickItemViewTransitioner *m_transitioner; + QQuickViewItem *m_item; + QPointF m_toPos; + QQuickItemViewTransitioner::TransitionType m_type; + bool m_isTarget; + +protected: + virtual void finished(); +}; + + +QQuickItemViewTransitionJob::QQuickItemViewTransitionJob(QQuickItemViewTransitioner *transitioner) + : m_transitioner(transitioner) + , m_item(0), m_type(QQuickItemViewTransitioner::NoTransition), m_isTarget(false) +{ +} + +QQuickItemViewTransitionJob::~QQuickItemViewTransitionJob() +{ +} + +void QQuickItemViewTransitionJob::startTransition(QQuickViewItem *item, QQuickItemViewTransitioner::TransitionType type, const QPointF &to, bool isTargetItem) +{ + if (!item) { + qWarning("startTransition(): invalid item"); + return; + } + + QDeclarativeTransition *trans = 0; + switch (type) { + case QQuickItemViewTransitioner::NoTransition: + break; + case QQuickItemViewTransitioner::PopulateTransition: + trans = m_transitioner->populateTransition; + break; + case QQuickItemViewTransitioner::AddTransition: + trans = isTargetItem ? m_transitioner->addTransition : m_transitioner->addDisplacedTransition; + break; + case QQuickItemViewTransitioner::MoveTransition: + trans = isTargetItem ? m_transitioner->moveTransition : m_transitioner->moveDisplacedTransition; + break; + case QQuickItemViewTransitioner::RemoveTransition: + trans = isTargetItem ? m_transitioner->removeTransition : m_transitioner->removeDisplacedTransition; + break; + } + + if (!trans) { + qWarning("QQuickItemView: invalid view transition!"); + return; + } + + m_item = item; + m_toPos = to; + m_type = type; + m_isTarget = isTargetItem; + + QQuickViewTransitionAttached *attached = + static_cast<QQuickViewTransitionAttached*>(qmlAttachedPropertiesObject<QQuickViewTransitionAttached>(trans)); + if (attached) { + attached->m_index = item->index; + attached->m_item = item->item; + attached->m_destination = to; + switch (type) { + case QQuickItemViewTransitioner::NoTransition: + break; + case QQuickItemViewTransitioner::PopulateTransition: + case QQuickItemViewTransitioner::AddTransition: + attached->m_targetIndexes = m_transitioner->addTransitionIndexes; + attached->m_targetItems = m_transitioner->addTransitionTargets; + break; + case QQuickItemViewTransitioner::MoveTransition: + attached->m_targetIndexes = m_transitioner->moveTransitionIndexes; + attached->m_targetItems = m_transitioner->moveTransitionTargets; + break; + case QQuickItemViewTransitioner::RemoveTransition: + attached->m_targetIndexes = m_transitioner->removeTransitionIndexes; + attached->m_targetItems = m_transitioner->removeTransitionTargets; + break; + } + emit attached->indexChanged(); + emit attached->itemChanged(); + emit attached->destinationChanged(); + emit attached->targetIndexesChanged(); + emit attached->targetItemsChanged(); + } + + QDeclarativeStateOperation::ActionList actions; + actions << QDeclarativeAction(item->item, QLatin1String("x"), QVariant(to.x())); + actions << QDeclarativeAction(item->item, QLatin1String("y"), QVariant(to.y())); + + QDeclarativeTransitionManager::transition(actions, trans, item->item); +} + +void QQuickItemViewTransitionJob::finished() +{ + QDeclarativeTransitionManager::finished(); + + if (m_item) + m_item->finishedTransition(); + if (m_transitioner) + m_transitioner->finishedTransition(m_item); + + m_item = 0; + m_toPos.setX(0); + m_toPos.setY(0); + m_type = QQuickItemViewTransitioner::NoTransition; + m_isTarget = false; +} + + +QQuickItemViewTransitioner::QQuickItemViewTransitioner() + : populateTransition(0) + , addTransition(0), addDisplacedTransition(0) + , moveTransition(0), moveDisplacedTransition(0) + , removeTransition(0), removeDisplacedTransition(0) + , changeListener(0) + , usePopulateTransition(false) +{ +} + +bool QQuickItemViewTransitioner::canTransition(QQuickItemViewTransitioner::TransitionType type, bool asTarget) const +{ + switch (type) { + case QQuickItemViewTransitioner::NoTransition: + break; + case QQuickItemViewTransitioner::PopulateTransition: + return usePopulateTransition + && populateTransition && populateTransition->enabled(); + case QQuickItemViewTransitioner::AddTransition: + if (asTarget) + return addTransition && addTransition->enabled(); + else + return addDisplacedTransition && addDisplacedTransition->enabled(); + case QQuickItemViewTransitioner::MoveTransition: + if (asTarget) + return moveTransition && moveTransition->enabled(); + else + return moveDisplacedTransition && moveDisplacedTransition->enabled(); + case QQuickItemViewTransitioner::RemoveTransition: + if (asTarget) + return removeTransition && removeTransition->enabled(); + else + return removeDisplacedTransition && removeDisplacedTransition->enabled(); + } + return false; +} + +void QQuickItemViewTransitioner::transitionNextReposition(QQuickViewItem *item, QQuickItemViewTransitioner::TransitionType type, bool isTarget) +{ + bool matchedTransition = false; + if (type == QQuickItemViewTransitioner::AddTransition) { + // don't run add transitions for added items while populating + if (usePopulateTransition) + matchedTransition = false; + else + matchedTransition = canTransition(type, isTarget); + } else { + matchedTransition = canTransition(type, isTarget); + } + + if (matchedTransition) { + item->setNextTransition(type, isTarget); + } else { + // the requested transition type is not valid, but the item is scheduled/in another + // transition, so cancel it to allow the item to move directly to the correct pos + if (item->transitionScheduledOrRunning()) + item->stopTransition(); + } +} + +void QQuickItemViewTransitioner::finishedTransition(QQuickViewItem *item) +{ + if (changeListener) + changeListener->viewItemTransitionFinished(item); +} + + +QQuickViewItem::QQuickViewItem(QQuickItem *i) + : item(i) + , transition(0) + , nextTransitionType(QQuickItemViewTransitioner::NoTransition) + , index(-1) + , isTransitionTarget(false) + , nextTransitionToSet(false) +{ +} + +QQuickViewItem::~QQuickViewItem() +{ + if (transition) { + transition->m_item = 0; + transition->m_transitioner = 0; + } + delete transition; +} + +qreal QQuickViewItem::itemX() const +{ + if (nextTransitionType != QQuickItemViewTransitioner::NoTransition) + return nextTransitionToSet ? nextTransitionTo.x() : item->x(); + else if (transition && transition->isRunning()) + return transition->m_toPos.x(); + else + return item->x(); +} + +qreal QQuickViewItem::itemY() const +{ + // If item is transitioning to some pos, return that dest pos. + // If item was redirected to some new pos before the current transition finished, + // return that new pos. + if (nextTransitionType != QQuickItemViewTransitioner::NoTransition) + return nextTransitionToSet ? nextTransitionTo.y() : item->y(); + else if (transition && transition->isRunning()) + return transition->m_toPos.y(); + else + return item->y(); +} + +void QQuickViewItem::moveTo(const QPointF &pos) +{ + if (transitionScheduledOrRunning()) { + nextTransitionTo = pos; + nextTransitionToSet = true; + } else { + item->setPos(pos); + } +} + +void QQuickViewItem::setVisible(bool visible) +{ + if (!visible && transitionScheduledOrRunning()) + return; + item->setVisible(visible); +} + +bool QQuickViewItem::transitionScheduledOrRunning() const +{ + return (transition && transition->isRunning()) + || nextTransitionType != QQuickItemViewTransitioner::NoTransition; +} + +bool QQuickViewItem::transitionRunning() const +{ + return (transition && transition->isRunning()); +} + +bool QQuickViewItem::isPendingRemoval() const +{ + if (nextTransitionType == QQuickItemViewTransitioner::RemoveTransition) + return isTransitionTarget; + if (transition && transition->isRunning() && transition->m_type == QQuickItemViewTransitioner::RemoveTransition) + return transition->m_isTarget; + return false; +} + +bool QQuickViewItem::prepareTransition(const QRectF &viewBounds) +{ + bool doTransition = false; + + switch (nextTransitionType) { + case QQuickItemViewTransitioner::NoTransition: + { + return false; + } + case QQuickItemViewTransitioner::PopulateTransition: + { + return true; + } + case QQuickItemViewTransitioner::AddTransition: + case QQuickItemViewTransitioner::RemoveTransition: + // For Add targets, do transition if item is moving into visible area + // For Remove targets, do transition if item is currently in visible area + if (isTransitionTarget) { + doTransition = (nextTransitionType == QQuickItemViewTransitioner::AddTransition) + ? viewBounds.intersects(QRectF(nextTransitionTo.x(), nextTransitionTo.y(), item->width(), item->height())) + : viewBounds.intersects(QRectF(item->x(), item->y(), item->width(), item->height())); + if (!doTransition) + item->setPos(nextTransitionTo); + } else { + if (viewBounds.intersects(QRectF(item->x(), item->y(), item->width(), item->height())) + || viewBounds.intersects(QRectF(nextTransitionTo.x(), nextTransitionTo.y(), item->width(), item->height()))) { + doTransition = (nextTransitionTo != item->pos()); + } else { + item->setPos(nextTransitionTo); + } + } + break; + case QQuickItemViewTransitioner::MoveTransition: + // do transition if moving from or into visible area + if (nextTransitionTo != item->pos()) { + doTransition = viewBounds.intersects(QRectF(item->x(), item->y(), item->width(), item->height())) + || viewBounds.intersects(QRectF(nextTransitionTo.x(), nextTransitionTo.y(), item->width(), item->height())); + if (!doTransition) + item->setPos(nextTransitionTo); + } + break; + } + + if (!doTransition) + resetTransitionData(); + return doTransition; +} + +void QQuickViewItem::startTransition(QQuickItemViewTransitioner *transitioner) +{ + if (nextTransitionType == QQuickItemViewTransitioner::NoTransition) + return; + + if (!transition || transition->m_type != nextTransitionType || transition->m_isTarget != isTransitionTarget) { + delete transition; + transition = new QQuickItemViewTransitionJob(transitioner); + } + + // if item is not already moving somewhere, set it to not move anywhere + // so that removed items do not move to the default (0,0) + if (!nextTransitionToSet) + moveTo(item->pos()); + + transition->startTransition(this, nextTransitionType, nextTransitionTo, isTransitionTarget); + nextTransitionType = QQuickItemViewTransitioner::NoTransition; +} + +void QQuickViewItem::stopTransition() +{ + if (transition) { + transition->cancel(); + delete transition; + transition = 0; + } + resetTransitionData(); + finishedTransition(); +} + +void QQuickViewItem::setNextTransition(QQuickItemViewTransitioner::TransitionType type, bool isTargetItem) +{ + // Don't reset nextTransitionToSet - once it is set, it cannot be changed + // until the animation finishes since the itemX() and itemY() may be used + // to calculate positions for transitions for other items in the view. + nextTransitionType = type; + isTransitionTarget = isTargetItem; +} + +void QQuickViewItem::finishedTransition() +{ + nextTransitionToSet = false; + nextTransitionTo = QPointF(); +} + +void QQuickViewItem::resetTransitionData() +{ + nextTransitionType = QQuickItemViewTransitioner::NoTransition; + isTransitionTarget = false; + nextTransitionTo = QPointF(); + nextTransitionToSet = false; +} + + +QQuickViewTransitionAttached::QQuickViewTransitionAttached(QObject *parent) + : QObject(parent), m_item(0), m_index(-1) +{ +} +/*! + \qmlclass ViewTransition QQuickViewTransitionAttached + \inqmlmodule QtQuick 2 + \ingroup qml-view-elements + \brief The ViewTransition attached property provides details on items under transition in a view. + + With ListView and GridView, it is possible to specify transitions that should be applied whenever + the items in the view change as a result of modifications to the view's model. They both have the + following properties that can be set to the appropriate transitions to be run for various + operations: + + \list + \o \c add and \c addDisplaced - the transitions to run when items are added to the view + \o \c remove and \c removeDisplaced - the transitions to run when items are removed from the view + \o \c move and \c moveDisplaced - the transitions to run when items are moved within the view + (i.e. as a result of a move operation in the model) + \o \c populate - the transition to run when a view is created, or when the model changes + \endlist + + Such view transitions additionally have access to a ViewTransition attached property that + provides details of the items that are under transition and the operation that triggered the + transition. Since view transitions are run once per item, these details can be used to customise + each transition for each individual item. + + The ViewTransition attached property provides the following properties specific to the item to + which the transition is applied: + + \list + \o ViewTransition.item - the item that is under transition + \o ViewTransition.index - the index of this item + \o ViewTransition.destination - the (x,y) point to which this item is moving for the relevant view operation + \endlist + + In addition, ViewTransition provides properties specific to the items which are the target + of the operation that triggered the transition: + + \list + \o ViewTransition.targetIndexes - the indexes of the target items + \o ViewTransition.targetItems - the target items themselves + \endlist + + View transitions can be written without referring to any of the attributes listed + above. These attributes merely provide extra details that are useful for customising view + transitions. + + Following is an introduction to view transitions and the ways in which the ViewTransition + attached property can be used to augment view transitions. + + + \section2 View transitions: a simple example + + Here is a basic example of the use of view transitions. The view below specifies transitions for + the \c add and \c addDisplaced properties, which will be run when items are added to the view: + + \snippet doc/src/snippets/declarative/viewtransitions/viewtransitions-basic.qml 0 + + When the space key is pressed, adding an item to the model, the new item will fade in and + increase in scale over 400 milliseconds as it is added to the view. Also, any item that is + displaced by the addition of a new item will animate to its new position in the view over + 400 milliseconds, as specified by the \c addDisplaced transition. + + If five items were inserted in succession at index 0, the effect would be this: + + \image viewtransitions-basic.gif + + Notice that the NumberAnimation objects above do not need to specify a \c target to animate + the appropriate item. Also, the NumberAnimation in the \c addTransition does not need to specify + the \c to value to move the item to its correct position in the view. This is because the view + implicitly sets the \c target and \c to values with the correct item and final item position + values if these properties are not explicitly defined. + + At its simplest, a view transition may just animate an item to its new position following a + view operation, just as the \c addDisplaced transition does above, or animate some item properties, + as in the \c add transition above. Additionally, a view transition may make use of the + ViewTransition attached property to customise animation behavior for different items. Following + are some examples of how this can be achieved. + + + \section2 Using the ViewTransition attached property + + As stated, the various ViewTransition properties provide details specific to the individual item + being transitioned as well as the operation that triggered the transition. In the animation above, + five items are inserted in succession at index 0. When the fifth and final insertion takes place, + adding "Item 4" to the view, the \c add transition is run once (for the inserted item) and the + \c addDisplaced transition is run four times (once for each of the four existing items in the view). + + At this point, if we examined the \c addDisplaced transition that was run for the bottom displaced + item ("Item 0"), the ViewTransition property values provided to this transition would be as follows: + + \table + \header + \o Property + \o Value + \o Explanation + \row + \o ViewTransition.item + \o "Item 0" delegate instance + \o The "Item 0" \l Rectangle object itself + \row + \o ViewTransition.index + \o \c int value of 4 + \o The index of "Item 0" within the model following the add operation + \row + \o ViewTransition.destination + \o \l point value of (0, 120) + \o The position that "Item 0" is moving to + \row + \o ViewTransition.targetIndexes + \o \c int array, just contains the integer "0" (zero) + \o The index of "Item 4", the new item added to the view + \row + \o ViewTransition.targetItems + \o object array, just contains the "Item 4" delegate instance + \o The "Item 4" \l Rectangle object - the new item added to the view + \endtable + + The ViewTransition.targetIndexes and ViewTransition.targetItems lists provide the items and + indexes of all delegate instances that are the targets of the relevant operation. For an add + operation, these are all the items that are added into the view; for a remove, these are all + the items removed from the view, and so on. (Note these lists will only contain references to + items that have been created within the view or its cached items; targets that are not within + the visible area of the view or within the item cache will not be accessible.) + + So, while the ViewTransition.item, ViewTransition.index and ViewTransition.destination values + vary for each individual transition that is run, the ViewTransition.targetIndexes and + ViewTransition.targetItems values are the same for every \c add and \c addDisplaced transition + that is triggered by a particular add operation. + + + \section3 Delaying animations based on index + + Since each view transition is run once for each item affected by the transition, the ViewTransition + properties can be used within a transition to define custom behavior for each item's transition. + For example, the ListView in the previous example could use this information to create a ripple-type + effect on the movement of the displaced items. + + This can be achieved by modifying the \c addDisplaced transition so that it delays the animation of + each displaced item based on the difference between its index (provided by ViewTransition.index) + and the first removed index (provided by ViewTransition.targetIndexes): + + \snippet doc/src/snippets/declarative/viewtransitions/viewtransitions-delayedbyindex.qml 0 + + Each displaced item delays its animation by an additional 100 milliseconds, producing a subtle + ripple-type effect when items are displaced by the add, like this: + + \image viewtransitions-delayedbyindex.gif + + + \section3 Animating items to intermediate positions + + The ViewTransition.item property gives a reference to the item to which the transition is being + applied. This can be used to access any of the item's attributes, custom \c property values, + and so on. + + Below is a modification of the \c addDisplaced transition from the previous example. It adds a + ParallelAnimation with nested NumberAnimation objects that reference ViewTransition.item to access + each item's \c x and \c y values at the start of their transitions. This allows each item to + animate to an intermediate position relative to its starting point for the transition, before + animating to its final position in the view: + + \snippet doc/src/snippets/declarative/viewtransitions/viewtransitions-intermediatemove.qml 0 + + Now, a displaced item will first move to a position of (20, 50) relative to its starting + position, and then to its final, correct position in the view: + + \image viewtransitions-intermediatemove.gif + + Since the final NumberAnimation does not specify a \c to value, the view implicitly sets this + value to the item's final position in the view, and so this last animation will move this item + to the correct place. If the transition requires the final position of the item for some calculation, + this is accessible through ViewTransition.destination. + + Instead of using multiple NumberAnimations, you could use a PathAnimation to animate an item over + a curved path. For example, the \c add transition in the previous example could be augmented with + a PathAnimation as follows: to animate newly added items along a path: + + \snippet doc/src/snippets/declarative/viewtransitions/viewtransitions-pathanim.qml 0 + + This animates newly added items along a path. Notice that each path is specified relative to + each item's final destination point, so that items inserted at different indexes start their + paths from different positions: + + \image viewtransitions-pathanim.gif + + + \section2 Handling interrupted animations + + A view transition may be interrupted at any time if a different view transition needs to be + applied while the original transition is in progress. For example, say Item A is inserted at index 0 + and undergoes an "add" transition; then, Item B is inserted at index 0 in quick succession before + Item A's transition has finished. Since Item B is inserted before Item A, it will displace Item + A, causing the view to interrupt Item A's "add" transition mid-way and start an "addDisplaced" + transition on Item A instead. + + For simple animations that simply animate an item's movement to its final destination, this + interruption is unlikely to require additional consideration. However, if a transition changes other + properties, this interruption may cause unwanted side effects. Consider the first example on this + page, repeated below for convenience: + + \snippet doc/src/snippets/declarative/viewtransitions/viewtransitions-basic.qml 0 + + If multiple items are added in rapid succession, without waiting for a previous transition + to finish, this is the result: + + \image viewtransitions-interruptedbad.gif + + Each newly added item undergoes an \c add transition, but before the transition can finish, + another item is added, displacing the previously added item. Because of this, the \c add + transition on the previously added item is interrupted and an \c addDisplaced transition is + started on the item instead. Due to the interruption, the \c opacity and \c scale animations + have not completed, thus producing items with opacity and scale that are below 1.0. + + To fix this, the \c addDisplaced transition should additionally ensure the item properties are + set to the end values specified in the \c add transition, effectively resetting these values + whenever an item is displaced. In this case, it means setting the item opacity and scale to 1.0: + + \snippet doc/src/snippets/declarative/viewtransitions/viewtransitions-interruptedgood.qml 0 + + Now, when an item's \c add transition is interrupted, its opacity and scale are animated to 1.0 + upon displacement, avoiding the erroneous visual effects from before: + + \image viewtransitions-interruptedgood.gif + + The same principle applies to any combination of view transitions. An added item may be moved + before its add transition finishes, or a moved item may be removed before its moved transition + finishes, and so on; so, the rule of thumb is that every transition should handle the same set of + properties. + + + \section2 Restrictions regarding ScriptAction + + When a view transition is initialized, any property bindings that refer to the ViewTransition + attached property are evaluated in preparation for the transition. Due to the nature of the + internal construction of a view transition, the attributes of the ViewTransition attached + property are only valid for the relevant item when the transition is initialized, and may not be + valid when the transition is actually run. + + Therefore, a ScriptAction within a view transition should not refer to the ViewTransition + attached property, as it may not refer to the expected values at the time that the ScriptAction + is actually invoked. Consider the following example: + + \snippet doc/src/snippets/declarative/viewtransitions/viewtransitions-scriptactionbad.qml 0 + + When the space key is pressed, three items are moved from index 5 to index 1. For each moved + item, the \c moveTransition sequence presumably animates the item's color to "yellow", then + animates it to its final position, then changes the item color back to "lightsteelblue" using a + ScriptAction. However, when run, the transition does not produce the intended result: + + \image viewtransitions-scriptactionbad.gif + + Only the last moved item is returned to the "lightsteelblue" color; the others remain yellow. This + is because the ScriptAction is not run until after the transition has already been initialized, by + which time the ViewTransition.item value has changed to refer to a different item; the item that + the script had intended to refer to is not the one held by ViewTransition.item at the time the + ScriptAction is actually invoked. + + In this instance, to avoid this issue, the view could set the property using a PropertyAction + instead: + + \snippet doc/src/snippets/declarative/viewtransitions/viewtransitions-scriptactiongood.qml 0 + + When the transition is initialized, the PropertyAction \c target will be set to the respective + ViewTransition.item for the transition and will later run with the correct item target as + expected. + */ + +/*! + \qmlattachedproperty list QtQuick2::ViewTransition::index + + This attached property holds the index of the item that is being + transitioned. + + Note that if the item is being moved, this property holds the index that + the item is moving to, not from. +*/ + +/*! + \qmlattachedproperty list QtQuick2::ViewTransition::item + + This attached property holds the the item that is being transitioned. + + \warning This item should not be kept and referred to outside of the transition + as it may become invalid as the view changes. +*/ + +/*! + \qmlattachedproperty list QtQuick2::ViewTransition::destination + + This attached property holds the final destination position for the transitioned + item within the view. + + This property value is a \l point with \c x and \c y properties. +*/ + +/*! + \qmlattachedproperty list QtQuick2::ViewTransition::targetIndexes + + This attached property holds a list of the indexes of the items in view + that are the target of the relevant operation. + + The targets are the items that are the subject of the operation. For + an add operation, these are the items being added; for a remove, these + are the items being removed; for a move, these are the items being + moved. + + For example, if the transition was triggered by an insert operation + that added two items at index 1 and 2, this targetIndexes list would + have the value [1,2]. + + \note The targetIndexes list only contains the indexes of items that are actually + in view, or will be in the view once the relevant operation completes. + + \sa QtQuick2::ViewTransition::targetIndexes +*/ + +/*! + \qmlattachedproperty list QtQuick2::ViewTransition::targetItems + + This attached property holds the list of items in view that are the + target of the relevant operation. + + The targets are the items that are the subject of the operation. For + an add operation, these are the items being added; for a remove, these + are the items being removed; for a move, these are the items being + moved. + + For example, if the transition was triggered by an insert operation + that added two items at index 1 and 2, this targetItems list would + contain these two items. + + \note The targetItems list only contains items that are actually + in view, or will be in the view once the relevant operation completes. + + \warning The objects in this list should not be kept and referred to + outside of the transition as the items may become invalid. The targetItems + are only valid when the Transition is initially created; this also means + they should not be used by ScriptAction objects in the Transition, which are + not evaluated until the transition is run. + + \sa QtQuick2::ViewTransition::targetIndexes +*/ +QDeclarativeListProperty<QObject> QQuickViewTransitionAttached::targetItems() +{ + return QDeclarativeListProperty<QObject>(this, m_targetItems); +} + +QQuickViewTransitionAttached *QQuickViewTransitionAttached::qmlAttachedProperties(QObject *obj) +{ + return new QQuickViewTransitionAttached(obj); +} + +QT_END_NAMESPACE diff --git a/src/quick/items/qquickitemviewtransition_p.h b/src/quick/items/qquickitemviewtransition_p.h new file mode 100644 index 0000000000..c388bed17e --- /dev/null +++ b/src/quick/items/qquickitemviewtransition_p.h @@ -0,0 +1,201 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QQUICKITEMVIEWTRANSITION_P_P_H +#define QQUICKITEMVIEWTRANSITION_P_P_H + +#include <private/qdeclarativetransitionmanager_p_p.h> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +QT_MODULE(Declarative) + +class QQuickItem; +class QQuickViewItem; +class QQuickItemViewTransitionJob; + + +class QQuickItemViewTransitionChangeListener +{ +public: + QQuickItemViewTransitionChangeListener() {} + virtual ~QQuickItemViewTransitionChangeListener() {} + + virtual void viewItemTransitionFinished(QQuickViewItem *item) = 0; +}; + + +class QQuickItemViewTransitioner +{ +public: + enum TransitionType { + NoTransition, + PopulateTransition, + AddTransition, + MoveTransition, + RemoveTransition + }; + + QQuickItemViewTransitioner(); + virtual ~QQuickItemViewTransitioner() {} + + bool canTransition(QQuickItemViewTransitioner::TransitionType type, bool asTarget) const; + void transitionNextReposition(QQuickViewItem *item, QQuickItemViewTransitioner::TransitionType type, bool isTarget); + + inline void setPopulateTransitionEnabled(bool b) { usePopulateTransition = b; } + inline void setChangeListener(QQuickItemViewTransitionChangeListener *obj) { changeListener = obj; } + + QList<int> addTransitionIndexes; + QList<int> moveTransitionIndexes; + QList<int> removeTransitionIndexes; + QList<QObject *> addTransitionTargets; + QList<QObject *> moveTransitionTargets; + QList<QObject *> removeTransitionTargets; + + QDeclarativeTransition *populateTransition; + QDeclarativeTransition *addTransition; + QDeclarativeTransition *addDisplacedTransition; + QDeclarativeTransition *moveTransition; + QDeclarativeTransition *moveDisplacedTransition; + QDeclarativeTransition *removeTransition; + QDeclarativeTransition *removeDisplacedTransition; + +private: + friend class QQuickItemViewTransitionJob; + + QQuickItemViewTransitionChangeListener *changeListener; + bool usePopulateTransition; + + void finishedTransition(QQuickViewItem *item); +}; + + +/* + An item in a view, that can be transitioned using QQuickViewTransitionJob. + */ +class QQuickViewItem +{ +public: + QQuickViewItem(QQuickItem *i); + virtual ~QQuickViewItem(); + + qreal itemX() const; + qreal itemY() const; + + void moveTo(const QPointF &pos); + void setVisible(bool visible); + + bool transitionScheduledOrRunning() const; + bool transitionRunning() const; + bool isPendingRemoval() const; + + bool prepareTransition(const QRectF &viewBounds); + void startTransition(QQuickItemViewTransitioner *transitioner); + void stopTransition(); + + QPointF nextTransitionTo; + QQuickItem *item; + QQuickItemViewTransitionJob *transition; + QQuickItemViewTransitioner::TransitionType nextTransitionType; + int index; + bool isTransitionTarget; + bool nextTransitionToSet; + +private: + friend class QQuickItemViewTransitioner; + friend class QQuickItemViewTransitionJob; + void setNextTransition(QQuickItemViewTransitioner::TransitionType, bool isTargetItem); + void finishedTransition(); + void resetTransitionData(); +}; + + +class QQuickViewTransitionAttached : public QObject +{ + Q_OBJECT + + Q_PROPERTY(int index READ index NOTIFY indexChanged) + Q_PROPERTY(QQuickItem* item READ item NOTIFY itemChanged) + Q_PROPERTY(QPointF destination READ destination NOTIFY destinationChanged) + + Q_PROPERTY(QList<int> targetIndexes READ targetIndexes NOTIFY targetIndexesChanged) + Q_PROPERTY(QDeclarativeListProperty<QObject> targetItems READ targetItems NOTIFY targetItemsChanged) + +public: + QQuickViewTransitionAttached(QObject *parent); + + int index() const { return m_index; } + QQuickItem *item() const { return m_item; } + QPointF destination() const { return m_destination; } + + QList<int> targetIndexes() const { return m_targetIndexes; } + QDeclarativeListProperty<QObject> targetItems(); + + static QQuickViewTransitionAttached *qmlAttachedProperties(QObject *); + +signals: + void indexChanged(); + void itemChanged(); + void destinationChanged(); + + void targetIndexesChanged(); + void targetItemsChanged(); + +private: + friend class QQuickItemViewTransitionJob; + QPointF m_destination; + QList<int> m_targetIndexes; + QList<QObject *> m_targetItems; + + QQuickItem *m_item; + int m_index; +}; + +QT_END_NAMESPACE + +QML_DECLARE_TYPE(QQuickViewTransitionAttached) +QML_DECLARE_TYPEINFO(QQuickViewTransitionAttached, QML_HAS_ATTACHED_PROPERTIES) + +QT_END_HEADER + +#endif // QQUICKITEMVIEWTRANSITION_P_P_H diff --git a/src/quick/items/qquicklistview.cpp b/src/quick/items/qquicklistview.cpp index 0e643a13e3..2190952c69 100644 --- a/src/quick/items/qquicklistview.cpp +++ b/src/quick/items/qquicklistview.cpp @@ -316,9 +316,6 @@ public: return (x >= itemX() && x < itemX() + item->width() && y >= itemY() && y < itemY() + item->height()); } - QQuickItemView *itemView() const { - return view; - } QQuickListView *view; @@ -643,7 +640,7 @@ bool QQuickListViewPrivate::addVisibleItems(qreal fillFrom, qreal fillTo, bool d #endif if (!(item = static_cast<FxListItemSG*>(createItem(modelIndex, doBuffer)))) break; - if (!canTransition(FxViewItemTransitionManager::PopulateTransition, true)) // pos will be set by layoutVisibleItems() + if (!transitioner || !transitioner->canTransition(QQuickItemViewTransitioner::PopulateTransition, true)) // pos will be set by layoutVisibleItems() item->setPosition(pos); item->item->setVisible(!doBuffer); pos += item->size() + spacing; @@ -663,7 +660,7 @@ bool QQuickListViewPrivate::addVisibleItems(qreal fillFrom, qreal fillTo, bool d break; --visibleIndex; visiblePos -= item->size() + spacing; - if (!canTransition(FxViewItemTransitionManager::PopulateTransition, true)) // pos will be set by layoutVisibleItems() + if (!transitioner || !transitioner->canTransition(QQuickItemViewTransitioner::PopulateTransition, true)) // pos will be set by layoutVisibleItems() item->setPosition(visiblePos); item->item->setVisible(!doBuffer); visibleItems.prepend(item); @@ -2341,6 +2338,10 @@ void QQuickListView::setSnapMode(SnapMode mode) the new item that has been added to the view; to animate the added items, set the \l add property. + If an item is displaced by multiple types of operations at the same time, it is not + defined as to whether the addDisplaced, moveDisplaced or removeDisplaced transition + will be applied. + For more details and examples on how to use view transitions, see the ViewTransition documentation. @@ -2405,6 +2406,10 @@ void QQuickListView::setSnapMode(SnapMode mode) the items that are the actual subjects of the move operation; to animate the moved items, set the \l move property. + If an item is displaced by multiple types of operations at the same time, it is not + defined as to whether the addDisplaced, moveDisplaced or removeDisplaced transition + will be applied. + For more details and examples on how to use view transitions, see the ViewTransition documentation. @@ -2472,6 +2477,10 @@ void QQuickListView::setSnapMode(SnapMode mode) the item that has actually been removed from the view; to animate the removed items, set the \l remove property. + If an item is displaced by multiple types of operations at the same time, it is not + defined as to whether the addDisplaced, moveDisplaced or removeDisplaced transition + will be applied. + For more details and examples on how to use view transitions, see the ViewTransition documentation. @@ -2740,7 +2749,8 @@ bool QQuickListViewPrivate::applyInsertionChange(const QDeclarativeChangeSet::In insertResult->changedFirstItem = true; if (!change.isMove()) { addedItems->append(item); - transitionNextReposition(item, FxViewItemTransitionManager::AddTransition, true); + if (transitioner) + transitioner->transitionNextReposition(item, QQuickItemViewTransitioner::AddTransition, true); } insertResult->sizeChangesBeforeVisiblePos += item->size() + spacing; pos -= item->size() + spacing; @@ -2766,11 +2776,12 @@ bool QQuickListViewPrivate::applyInsertionChange(const QDeclarativeChangeSet::In if (change.isMove()) { // we know this is a move target, since move displaced items that are // shuffled into view due to a move would be added in refill() - if (canTransition(FxViewItemTransitionManager::MoveTransition, true) && newItem) + if (newItem && transitioner && transitioner->canTransition(QQuickItemViewTransitioner::MoveTransition, true)) movingIntoView->append(MovedItem(item, change.moveKey(item->index))); } else { addedItems->append(item); - transitionNextReposition(item, FxViewItemTransitionManager::AddTransition, true); + if (transitioner) + transitioner->transitionNextReposition(item, QQuickItemViewTransitioner::AddTransition, true); } insertResult->sizeChangesAfterVisiblePos += item->size() + spacing; pos += item->size() + spacing; @@ -2782,10 +2793,12 @@ bool QQuickListViewPrivate::applyInsertionChange(const QDeclarativeChangeSet::In FxViewItem *item = visibleItems.at(index); if (item->index != -1) item->index += count; - if (change.isMove()) - transitionNextReposition(item, FxViewItemTransitionManager::MoveTransition, false); - else - transitionNextReposition(item, FxViewItemTransitionManager::AddTransition, false); + if (transitioner) { + if (change.isMove()) + transitioner->transitionNextReposition(item, QQuickItemViewTransitioner::MoveTransition, false); + else + transitioner->transitionNextReposition(item, QQuickItemViewTransitioner::AddTransition, false); + } } updateVisibleIndex(); @@ -2797,6 +2810,9 @@ void QQuickListViewPrivate::translateAndTransitionItemsAfter(int afterModelIndex { Q_UNUSED(insertionResult); + if (!transitioner) + return; + int markerItemIndex = -1; for (int i=0; i<visibleItems.count(); i++) { if (visibleItems[i]->index == afterModelIndex) { @@ -2816,7 +2832,7 @@ void QQuickListViewPrivate::translateAndTransitionItemsAfter(int afterModelIndex if (!listItem->transitionScheduledOrRunning()) { qreal pos = listItem->position(); listItem->setPosition(pos - sizeRemoved); - transitionNextReposition(listItem, FxViewItemTransitionManager::RemoveTransition, false); + transitioner->transitionNextReposition(listItem, QQuickItemViewTransitioner::RemoveTransition, false); listItem->setPosition(pos); } } |