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42 #include "qquickitem.h"
44 #include "qquickcanvas.h"
45 #include <QtDeclarative/qjsengine.h>
46 #include "qquickcanvas_p.h"
48 #include "qquickevents_p_p.h"
49 #include "qquickscreen_p.h"
51 #include <QtDeclarative/qdeclarativeengine.h>
52 #include <QtDeclarative/qdeclarativecomponent.h>
53 #include <QtDeclarative/qdeclarativeinfo.h>
54 #include <QtGui/qpen.h>
55 #include <QtGui/qcursor.h>
56 #include <QtGui/qguiapplication.h>
57 #include <QtGui/qinputpanel.h>
58 #include <QtCore/qdebug.h>
59 #include <QtCore/qcoreevent.h>
60 #include <QtCore/qnumeric.h>
62 #include <private/qdeclarativeengine_p.h>
63 #include <QtQuick/private/qdeclarativestategroup_p.h>
64 #include <private/qdeclarativeopenmetaobject_p.h>
65 #include <QtQuick/private/qdeclarativestate_p.h>
66 #include <private/qlistmodelinterface_p.h>
67 #include <private/qquickitem_p.h>
68 #include <private/qdeclarativeaccessors_p.h>
69 #include <QtQuick/private/qquickaccessibleattached_p.h>
73 // XXX todo Check that elements that create items handle memory correctly after visual ownership change
77 static void QQuickItem_parentNotifier(QObject *o, intptr_t, QDeclarativeNotifier **n)
79 QQuickItemPrivate *d = QQuickItemPrivate::get(static_cast<QQuickItem *>(o));
80 *n = &d->parentNotifier;
83 QML_PRIVATE_ACCESSOR(QQuickItem, QQuickItem *, parent, parentItem)
84 QML_PRIVATE_ACCESSOR(QQuickItem, qreal, x, x)
85 QML_PRIVATE_ACCESSOR(QQuickItem, qreal, y, y)
86 QML_PRIVATE_ACCESSOR(QQuickItem, qreal, width, width)
87 QML_PRIVATE_ACCESSOR(QQuickItem, qreal, height, height)
89 static QDeclarativeAccessors QQuickItem_parent = { QQuickItem_parentRead, QQuickItem_parentNotifier };
90 static QDeclarativeAccessors QQuickItem_x = { QQuickItem_xRead, 0 };
91 static QDeclarativeAccessors QQuickItem_y = { QQuickItem_yRead, 0 };
92 static QDeclarativeAccessors QQuickItem_width = { QQuickItem_widthRead, 0 };
93 static QDeclarativeAccessors QQuickItem_height = { QQuickItem_heightRead, 0 };
95 QML_DECLARE_PROPERTIES(QQuickItem) {
96 { QML_PROPERTY_NAME(parent), 0, &QQuickItem_parent },
97 { QML_PROPERTY_NAME(x), 0, &QQuickItem_x },
98 { QML_PROPERTY_NAME(y), 0, &QQuickItem_y },
99 { QML_PROPERTY_NAME(width), 0, &QQuickItem_width },
100 { QML_PROPERTY_NAME(height), 0, &QQuickItem_height }
103 void QQuickItemPrivate::registerAccessorProperties()
105 QML_DEFINE_PROPERTIES(QQuickItem);
109 \qmlclass Transform QQuickTransform
110 \inqmlmodule QtQuick 2
111 \ingroup qml-transform-elements
112 \brief The Transform elements provide a way of building advanced transformations on Items.
114 The Transform element is a base type which cannot be instantiated directly.
115 The following concrete Transform types are available:
123 The Transform elements let you create and control advanced transformations that can be configured
124 independently using specialized properties.
126 You can assign any number of Transform elements to an \l Item. Each Transform is applied in order,
131 \qmlclass Translate QQuickTranslate
132 \inqmlmodule QtQuick 2
133 \ingroup qml-transform-elements
134 \brief The Translate object provides a way to move an Item without changing its x or y properties.
136 The Translate object provides independent control over position in addition to the Item's x and y properties.
138 The following example moves the Y axis of the \l Rectangle elements while still allowing the \l Row element
139 to lay the items out as if they had not been transformed:
145 width: 100; height: 100
147 transform: Translate { y: 20 }
150 width: 100; height: 100
152 transform: Translate { y: -20 }
161 \qmlproperty real QtQuick2::Translate::x
163 The translation along the X axis.
167 \qmlproperty real QtQuick2::Translate::y
169 The translation along the Y axis.
173 \qmlclass Scale QQuickScale
174 \inqmlmodule QtQuick 2
175 \ingroup qml-transform-elements
176 \brief The Scale element provides a way to scale an Item.
178 The Scale element gives more control over scaling than using \l Item's \l{Item::scale}{scale} property. Specifically,
179 it allows a different scale for the x and y axes, and allows the scale to be relative to an
182 The following example scales the X axis of the Rectangle, relative to its interior point 25, 25:
185 width: 100; height: 100
187 transform: Scale { origin.x: 25; origin.y: 25; xScale: 3}
191 \sa Rotation, Translate
195 \qmlproperty real QtQuick2::Scale::origin.x
196 \qmlproperty real QtQuick2::Scale::origin.y
198 The point that the item is scaled from (i.e., the point that stays fixed relative to the parent as
199 the rest of the item grows). By default the origin is 0, 0.
203 \qmlproperty real QtQuick2::Scale::xScale
205 The scaling factor for the X axis.
209 \qmlproperty real QtQuick2::Scale::yScale
211 The scaling factor for the Y axis.
215 \qmlclass Rotation QQuickRotation
216 \inqmlmodule QtQuick 2
217 \ingroup qml-transform-elements
218 \brief The Rotation object provides a way to rotate an Item.
220 The Rotation object gives more control over rotation than using \l Item's \l{Item::rotation}{rotation} property.
221 Specifically, it allows (z axis) rotation to be relative to an arbitrary point.
223 The following example rotates a Rectangle around its interior point 25, 25:
226 width: 100; height: 100
228 transform: Rotation { origin.x: 25; origin.y: 25; angle: 45}
232 Rotation also provides a way to specify 3D-like rotations for Items. For these types of
233 rotations you must specify the axis to rotate around in addition to the origin point.
235 The following example shows various 3D-like rotations applied to an \l Image.
236 \snippet doc/src/snippets/declarative/rotation.qml 0
238 \image axisrotation.png
240 \sa {declarative/ui-components/dialcontrol}{Dial Control example}, {declarative/toys/clocks}{Clocks example}
244 \qmlproperty real QtQuick2::Rotation::origin.x
245 \qmlproperty real QtQuick2::Rotation::origin.y
247 The origin point of the rotation (i.e., the point that stays fixed relative to the parent as
248 the rest of the item rotates). By default the origin is 0, 0.
252 \qmlproperty real QtQuick2::Rotation::axis.x
253 \qmlproperty real QtQuick2::Rotation::axis.y
254 \qmlproperty real QtQuick2::Rotation::axis.z
256 The axis to rotate around. For simple (2D) rotation around a point, you do not need to specify an axis,
257 as the default axis is the z axis (\c{ axis { x: 0; y: 0; z: 1 } }).
259 For a typical 3D-like rotation you will usually specify both the origin and the axis.
261 \image 3d-rotation-axis.png
265 \qmlproperty real QtQuick2::Rotation::angle
267 The angle to rotate, in degrees clockwise.
270 QQuickTransformPrivate::QQuickTransformPrivate()
274 QQuickTransform::QQuickTransform(QObject *parent)
275 : QObject(*(new QQuickTransformPrivate), parent)
279 QQuickTransform::QQuickTransform(QQuickTransformPrivate &dd, QObject *parent)
280 : QObject(dd, parent)
284 QQuickTransform::~QQuickTransform()
286 Q_D(QQuickTransform);
287 for (int ii = 0; ii < d->items.count(); ++ii) {
288 QQuickItemPrivate *p = QQuickItemPrivate::get(d->items.at(ii));
289 p->transforms.removeOne(this);
290 p->dirty(QQuickItemPrivate::Transform);
294 void QQuickTransform::update()
296 Q_D(QQuickTransform);
297 for (int ii = 0; ii < d->items.count(); ++ii) {
298 QQuickItemPrivate *p = QQuickItemPrivate::get(d->items.at(ii));
299 p->dirty(QQuickItemPrivate::Transform);
303 QQuickContents::QQuickContents(QQuickItem *item)
304 : m_item(item), m_x(0), m_y(0), m_width(0), m_height(0)
308 QQuickContents::~QQuickContents()
310 QList<QQuickItem *> children = m_item->childItems();
311 for (int i = 0; i < children.count(); ++i) {
312 QQuickItem *child = children.at(i);
313 QQuickItemPrivate::get(child)->removeItemChangeListener(this, QQuickItemPrivate::Geometry | QQuickItemPrivate::Destroyed);
317 bool QQuickContents::calcHeight(QQuickItem *changed)
320 qreal oldheight = m_height;
324 qreal bottom = oldy + oldheight;
325 qreal y = changed->y();
326 if (y + changed->height() > bottom)
327 bottom = y + changed->height();
331 m_height = bottom - top;
335 QList<QQuickItem *> children = m_item->childItems();
336 for (int i = 0; i < children.count(); ++i) {
337 QQuickItem *child = children.at(i);
338 qreal y = child->y();
339 if (y + child->height() > bottom)
340 bottom = y + child->height();
344 if (!children.isEmpty())
346 m_height = qMax(bottom - top, qreal(0.0));
349 return (m_height != oldheight || m_y != oldy);
352 bool QQuickContents::calcWidth(QQuickItem *changed)
355 qreal oldwidth = m_width;
359 qreal right = oldx + oldwidth;
360 qreal x = changed->x();
361 if (x + changed->width() > right)
362 right = x + changed->width();
366 m_width = right - left;
368 qreal left = FLT_MAX;
370 QList<QQuickItem *> children = m_item->childItems();
371 for (int i = 0; i < children.count(); ++i) {
372 QQuickItem *child = children.at(i);
373 qreal x = child->x();
374 if (x + child->width() > right)
375 right = x + child->width();
379 if (!children.isEmpty())
381 m_width = qMax(right - left, qreal(0.0));
384 return (m_width != oldwidth || m_x != oldx);
387 void QQuickContents::complete()
389 QQuickItemPrivate::get(m_item)->addItemChangeListener(this, QQuickItemPrivate::Children);
391 QList<QQuickItem *> children = m_item->childItems();
392 for (int i = 0; i < children.count(); ++i) {
393 QQuickItem *child = children.at(i);
394 QQuickItemPrivate::get(child)->addItemChangeListener(this, QQuickItemPrivate::Geometry | QQuickItemPrivate::Destroyed);
395 //###what about changes to visibility?
400 void QQuickContents::updateRect()
402 QQuickItemPrivate::get(m_item)->emitChildrenRectChanged(rectF());
405 void QQuickContents::itemGeometryChanged(QQuickItem *changed, const QRectF &newGeometry, const QRectF &oldGeometry)
408 bool wChanged = false;
409 bool hChanged = false;
410 //### we can only pass changed if the left edge has moved left, or the right edge has moved right
411 if (newGeometry.width() != oldGeometry.width() || newGeometry.x() != oldGeometry.x())
412 wChanged = calcWidth(/*changed*/);
413 if (newGeometry.height() != oldGeometry.height() || newGeometry.y() != oldGeometry.y())
414 hChanged = calcHeight(/*changed*/);
415 if (wChanged || hChanged)
419 void QQuickContents::itemDestroyed(QQuickItem *item)
422 QQuickItemPrivate::get(item)->removeItemChangeListener(this, QQuickItemPrivate::Geometry | QQuickItemPrivate::Destroyed);
426 void QQuickContents::itemChildRemoved(QQuickItem *, QQuickItem *item)
429 QQuickItemPrivate::get(item)->removeItemChangeListener(this, QQuickItemPrivate::Geometry | QQuickItemPrivate::Destroyed);
433 void QQuickContents::itemChildAdded(QQuickItem *, QQuickItem *item)
436 QQuickItemPrivate::get(item)->addItemChangeListener(this, QQuickItemPrivate::Geometry | QQuickItemPrivate::Destroyed);
440 QQuickItemKeyFilter::QQuickItemKeyFilter(QQuickItem *item)
441 : m_processPost(false), m_next(0)
443 QQuickItemPrivate *p = item?QQuickItemPrivate::get(item):0;
445 m_next = p->keyHandler;
446 p->keyHandler = this;
450 QQuickItemKeyFilter::~QQuickItemKeyFilter()
454 void QQuickItemKeyFilter::keyPressed(QKeyEvent *event, bool post)
456 if (m_next) m_next->keyPressed(event, post);
459 void QQuickItemKeyFilter::keyReleased(QKeyEvent *event, bool post)
461 if (m_next) m_next->keyReleased(event, post);
464 void QQuickItemKeyFilter::inputMethodEvent(QInputMethodEvent *event, bool post)
467 m_next->inputMethodEvent(event, post);
472 QVariant QQuickItemKeyFilter::inputMethodQuery(Qt::InputMethodQuery query) const
474 if (m_next) return m_next->inputMethodQuery(query);
478 void QQuickItemKeyFilter::componentComplete()
480 if (m_next) m_next->componentComplete();
483 \qmlclass KeyNavigation QQuickKeyNavigationAttached
484 \inqmlmodule QtQuick 2
485 \ingroup qml-basic-interaction-elements
486 \brief The KeyNavigation attached property supports key navigation by arrow keys.
488 Key-based user interfaces commonly allow the use of arrow keys to navigate between
489 focusable items. The KeyNavigation attached property enables this behavior by providing a
490 convenient way to specify the item that should gain focus when an arrow or tab key is pressed.
492 The following example provides key navigation for a 2x2 grid of items:
494 \snippet doc/src/snippets/declarative/keynavigation.qml 0
496 The top-left item initially receives focus by setting \l {Item::}{focus} to
497 \c true. When an arrow key is pressed, the focus will move to the
498 appropriate item, as defined by the value that has been set for
499 the KeyNavigation \l left, \l right, \l up or \l down properties.
501 Note that if a KeyNavigation attached property receives the key press and release
502 events for a requested arrow or tab key, the event is accepted and does not
503 propagate any further.
505 By default, KeyNavigation receives key events after the item to which it is attached.
506 If the item accepts the key event, the KeyNavigation attached property will not
507 receive an event for that key. Setting the \l priority property to
508 \c KeyNavigation.BeforeItem allows the event to be used for key navigation
509 before the item, rather than after.
511 If item to which the focus is switching is not enabled or visible, an attempt will
512 be made to skip this item and focus on the next. This is possible if there are
513 a chain of items with the same KeyNavigation handler. If multiple items in a row are not enabled
514 or visible, they will also be skipped.
516 KeyNavigation will implicitly set the other direction to return focus to this item. So if you set
517 \l left to another item, \l right will be set on that item's KeyNavigation to set focus back to this
518 item. However, if that item's KeyNavigation has had right explicitly set then no change will occur.
519 This means that the above example could have been written, with the same behaviour, without specifing
520 KeyNavigation.right or KeyNavigation.down for any of the items.
522 \sa {Keys}{Keys attached property}
526 \qmlproperty Item QtQuick2::KeyNavigation::left
527 \qmlproperty Item QtQuick2::KeyNavigation::right
528 \qmlproperty Item QtQuick2::KeyNavigation::up
529 \qmlproperty Item QtQuick2::KeyNavigation::down
530 \qmlproperty Item QtQuick2::KeyNavigation::tab
531 \qmlproperty Item QtQuick2::KeyNavigation::backtab
533 These properties hold the item to assign focus to
534 when the left, right, up or down cursor keys, or the
539 \qmlproperty Item QtQuick2::KeyNavigation::tab
540 \qmlproperty Item QtQuick2::KeyNavigation::backtab
542 These properties hold the item to assign focus to
543 when the Tab key or Shift+Tab key combination (Backtab) are pressed.
546 QQuickKeyNavigationAttached::QQuickKeyNavigationAttached(QObject *parent)
547 : QObject(*(new QQuickKeyNavigationAttachedPrivate), parent),
548 QQuickItemKeyFilter(qobject_cast<QQuickItem*>(parent))
550 m_processPost = true;
553 QQuickKeyNavigationAttached *
554 QQuickKeyNavigationAttached::qmlAttachedProperties(QObject *obj)
556 return new QQuickKeyNavigationAttached(obj);
559 QQuickItem *QQuickKeyNavigationAttached::left() const
561 Q_D(const QQuickKeyNavigationAttached);
565 void QQuickKeyNavigationAttached::setLeft(QQuickItem *i)
567 Q_D(QQuickKeyNavigationAttached);
572 QQuickKeyNavigationAttached* other =
573 qobject_cast<QQuickKeyNavigationAttached*>(qmlAttachedPropertiesObject<QQuickKeyNavigationAttached>(i));
574 if (other && !other->d_func()->rightSet){
575 other->d_func()->right = qobject_cast<QQuickItem*>(parent());
576 emit other->rightChanged();
581 QQuickItem *QQuickKeyNavigationAttached::right() const
583 Q_D(const QQuickKeyNavigationAttached);
587 void QQuickKeyNavigationAttached::setRight(QQuickItem *i)
589 Q_D(QQuickKeyNavigationAttached);
594 QQuickKeyNavigationAttached* other =
595 qobject_cast<QQuickKeyNavigationAttached*>(qmlAttachedPropertiesObject<QQuickKeyNavigationAttached>(i));
596 if (other && !other->d_func()->leftSet){
597 other->d_func()->left = qobject_cast<QQuickItem*>(parent());
598 emit other->leftChanged();
603 QQuickItem *QQuickKeyNavigationAttached::up() const
605 Q_D(const QQuickKeyNavigationAttached);
609 void QQuickKeyNavigationAttached::setUp(QQuickItem *i)
611 Q_D(QQuickKeyNavigationAttached);
616 QQuickKeyNavigationAttached* other =
617 qobject_cast<QQuickKeyNavigationAttached*>(qmlAttachedPropertiesObject<QQuickKeyNavigationAttached>(i));
618 if (other && !other->d_func()->downSet){
619 other->d_func()->down = qobject_cast<QQuickItem*>(parent());
620 emit other->downChanged();
625 QQuickItem *QQuickKeyNavigationAttached::down() const
627 Q_D(const QQuickKeyNavigationAttached);
631 void QQuickKeyNavigationAttached::setDown(QQuickItem *i)
633 Q_D(QQuickKeyNavigationAttached);
638 QQuickKeyNavigationAttached* other =
639 qobject_cast<QQuickKeyNavigationAttached*>(qmlAttachedPropertiesObject<QQuickKeyNavigationAttached>(i));
640 if (other && !other->d_func()->upSet) {
641 other->d_func()->up = qobject_cast<QQuickItem*>(parent());
642 emit other->upChanged();
647 QQuickItem *QQuickKeyNavigationAttached::tab() const
649 Q_D(const QQuickKeyNavigationAttached);
653 void QQuickKeyNavigationAttached::setTab(QQuickItem *i)
655 Q_D(QQuickKeyNavigationAttached);
660 QQuickKeyNavigationAttached* other =
661 qobject_cast<QQuickKeyNavigationAttached*>(qmlAttachedPropertiesObject<QQuickKeyNavigationAttached>(i));
662 if (other && !other->d_func()->backtabSet) {
663 other->d_func()->backtab = qobject_cast<QQuickItem*>(parent());
664 emit other->backtabChanged();
669 QQuickItem *QQuickKeyNavigationAttached::backtab() const
671 Q_D(const QQuickKeyNavigationAttached);
675 void QQuickKeyNavigationAttached::setBacktab(QQuickItem *i)
677 Q_D(QQuickKeyNavigationAttached);
681 d->backtabSet = true;
682 QQuickKeyNavigationAttached* other =
683 qobject_cast<QQuickKeyNavigationAttached*>(qmlAttachedPropertiesObject<QQuickKeyNavigationAttached>(i));
684 if (other && !other->d_func()->tabSet) {
685 other->d_func()->tab = qobject_cast<QQuickItem*>(parent());
686 emit other->tabChanged();
688 emit backtabChanged();
692 \qmlproperty enumeration QtQuick2::KeyNavigation::priority
694 This property determines whether the keys are processed before
695 or after the attached item's own key handling.
698 \o KeyNavigation.BeforeItem - process the key events before normal
699 item key processing. If the event is used for key navigation, it will be accepted and will not
700 be passed on to the item.
701 \o KeyNavigation.AfterItem (default) - process the key events after normal item key
702 handling. If the item accepts the key event it will not be
703 handled by the KeyNavigation attached property handler.
706 QQuickKeyNavigationAttached::Priority QQuickKeyNavigationAttached::priority() const
708 return m_processPost ? AfterItem : BeforeItem;
711 void QQuickKeyNavigationAttached::setPriority(Priority order)
713 bool processPost = order == AfterItem;
714 if (processPost != m_processPost) {
715 m_processPost = processPost;
716 emit priorityChanged();
720 void QQuickKeyNavigationAttached::keyPressed(QKeyEvent *event, bool post)
722 Q_D(QQuickKeyNavigationAttached);
725 if (post != m_processPost) {
726 QQuickItemKeyFilter::keyPressed(event, post);
731 switch (event->key()) {
733 if (QQuickItem *parentItem = qobject_cast<QQuickItem*>(parent()))
734 mirror = QQuickItemPrivate::get(parentItem)->effectiveLayoutMirror;
735 QQuickItem* leftItem = mirror ? d->right : d->left;
737 setFocusNavigation(leftItem, mirror ? "right" : "left");
742 case Qt::Key_Right: {
743 if (QQuickItem *parentItem = qobject_cast<QQuickItem*>(parent()))
744 mirror = QQuickItemPrivate::get(parentItem)->effectiveLayoutMirror;
745 QQuickItem* rightItem = mirror ? d->left : d->right;
747 setFocusNavigation(rightItem, mirror ? "left" : "right");
754 setFocusNavigation(d->up, "up");
760 setFocusNavigation(d->down, "down");
766 setFocusNavigation(d->tab, "tab");
770 case Qt::Key_Backtab:
772 setFocusNavigation(d->backtab, "backtab");
780 if (!event->isAccepted()) QQuickItemKeyFilter::keyPressed(event, post);
783 void QQuickKeyNavigationAttached::keyReleased(QKeyEvent *event, bool post)
785 Q_D(QQuickKeyNavigationAttached);
788 if (post != m_processPost) {
789 QQuickItemKeyFilter::keyReleased(event, post);
794 switch (event->key()) {
796 if (QQuickItem *parentItem = qobject_cast<QQuickItem*>(parent()))
797 mirror = QQuickItemPrivate::get(parentItem)->effectiveLayoutMirror;
798 if (mirror ? d->right : d->left)
802 if (QQuickItem *parentItem = qobject_cast<QQuickItem*>(parent()))
803 mirror = QQuickItemPrivate::get(parentItem)->effectiveLayoutMirror;
804 if (mirror ? d->left : d->right)
822 case Qt::Key_Backtab:
831 if (!event->isAccepted()) QQuickItemKeyFilter::keyReleased(event, post);
834 void QQuickKeyNavigationAttached::setFocusNavigation(QQuickItem *currentItem, const char *dir)
836 QQuickItem *initialItem = currentItem;
837 bool isNextItem = false;
840 if (currentItem->isVisible() && currentItem->isEnabled()) {
841 currentItem->setFocus(true);
844 qmlAttachedPropertiesObject<QQuickKeyNavigationAttached>(currentItem, false);
846 QQuickItem *tempItem = qvariant_cast<QQuickItem*>(attached->property(dir));
848 currentItem = tempItem;
854 while (currentItem != initialItem && isNextItem);
857 const QQuickKeysAttached::SigMap QQuickKeysAttached::sigMap[] = {
858 { Qt::Key_Left, "leftPressed" },
859 { Qt::Key_Right, "rightPressed" },
860 { Qt::Key_Up, "upPressed" },
861 { Qt::Key_Down, "downPressed" },
862 { Qt::Key_Tab, "tabPressed" },
863 { Qt::Key_Backtab, "backtabPressed" },
864 { Qt::Key_Asterisk, "asteriskPressed" },
865 { Qt::Key_NumberSign, "numberSignPressed" },
866 { Qt::Key_Escape, "escapePressed" },
867 { Qt::Key_Return, "returnPressed" },
868 { Qt::Key_Enter, "enterPressed" },
869 { Qt::Key_Delete, "deletePressed" },
870 { Qt::Key_Space, "spacePressed" },
871 { Qt::Key_Back, "backPressed" },
872 { Qt::Key_Cancel, "cancelPressed" },
873 { Qt::Key_Select, "selectPressed" },
874 { Qt::Key_Yes, "yesPressed" },
875 { Qt::Key_No, "noPressed" },
876 { Qt::Key_Context1, "context1Pressed" },
877 { Qt::Key_Context2, "context2Pressed" },
878 { Qt::Key_Context3, "context3Pressed" },
879 { Qt::Key_Context4, "context4Pressed" },
880 { Qt::Key_Call, "callPressed" },
881 { Qt::Key_Hangup, "hangupPressed" },
882 { Qt::Key_Flip, "flipPressed" },
883 { Qt::Key_Menu, "menuPressed" },
884 { Qt::Key_VolumeUp, "volumeUpPressed" },
885 { Qt::Key_VolumeDown, "volumeDownPressed" },
889 bool QQuickKeysAttachedPrivate::isConnected(const char *signalName)
891 return isSignalConnected(signalIndex(signalName));
895 \qmlclass Keys QQuickKeysAttached
896 \inqmlmodule QtQuick 2
897 \ingroup qml-basic-interaction-elements
898 \brief The Keys attached property provides key handling to Items.
900 All visual primitives support key handling via the Keys
901 attached property. Keys can be handled via the onPressed
902 and onReleased signal properties.
904 The signal properties have a \l KeyEvent parameter, named
905 \e event which contains details of the event. If a key is
906 handled \e event.accepted should be set to true to prevent the
907 event from propagating up the item hierarchy.
909 \section1 Example Usage
911 The following example shows how the general onPressed handler can
912 be used to test for a certain key; in this case, the left cursor
915 \snippet doc/src/snippets/declarative/keys/keys-pressed.qml key item
917 Some keys may alternatively be handled via specific signal properties,
918 for example \e onSelectPressed. These handlers automatically set
919 \e event.accepted to true.
921 \snippet doc/src/snippets/declarative/keys/keys-handler.qml key item
923 See \l{Qt::Key}{Qt.Key} for the list of keyboard codes.
925 \section1 Key Handling Priorities
927 The Keys attached property can be configured to handle key events
928 before or after the item it is attached to. This makes it possible
929 to intercept events in order to override an item's default behavior,
930 or act as a fallback for keys not handled by the item.
932 If \l priority is Keys.BeforeItem (default) the order of key event processing is:
935 \o Items specified in \c forwardTo
936 \o specific key handlers, e.g. onReturnPressed
937 \o onKeyPress, onKeyRelease handlers
938 \o Item specific key handling, e.g. TextInput key handling
942 If priority is Keys.AfterItem the order of key event processing is:
945 \o Item specific key handling, e.g. TextInput key handling
946 \o Items specified in \c forwardTo
947 \o specific key handlers, e.g. onReturnPressed
948 \o onKeyPress, onKeyRelease handlers
952 If the event is accepted during any of the above steps, key
955 \sa KeyEvent, {KeyNavigation}{KeyNavigation attached property}
959 \qmlproperty bool QtQuick2::Keys::enabled
961 This flags enables key handling if true (default); otherwise
962 no key handlers will be called.
966 \qmlproperty enumeration QtQuick2::Keys::priority
968 This property determines whether the keys are processed before
969 or after the attached item's own key handling.
972 \o Keys.BeforeItem (default) - process the key events before normal
973 item key processing. If the event is accepted it will not
974 be passed on to the item.
975 \o Keys.AfterItem - process the key events after normal item key
976 handling. If the item accepts the key event it will not be
977 handled by the Keys attached property handler.
982 \qmlproperty list<Object> QtQuick2::Keys::forwardTo
984 This property provides a way to forward key presses, key releases, and keyboard input
985 coming from input methods to other items. This can be useful when you want
986 one item to handle some keys (e.g. the up and down arrow keys), and another item to
987 handle other keys (e.g. the left and right arrow keys). Once an item that has been
988 forwarded keys accepts the event it is no longer forwarded to items later in the
991 This example forwards key events to two lists:
1002 Keys.forwardTo: [list1, list2]
1009 \qmlsignal QtQuick2::Keys::onPressed(KeyEvent event)
1011 This handler is called when a key has been pressed. The \a event
1012 parameter provides information about the event.
1016 \qmlsignal QtQuick2::Keys::onReleased(KeyEvent event)
1018 This handler is called when a key has been released. The \a event
1019 parameter provides information about the event.
1023 \qmlsignal QtQuick2::Keys::onDigit0Pressed(KeyEvent event)
1025 This handler is called when the digit '0' has been pressed. The \a event
1026 parameter provides information about the event.
1030 \qmlsignal QtQuick2::Keys::onDigit1Pressed(KeyEvent event)
1032 This handler is called when the digit '1' has been pressed. The \a event
1033 parameter provides information about the event.
1037 \qmlsignal QtQuick2::Keys::onDigit2Pressed(KeyEvent event)
1039 This handler is called when the digit '2' has been pressed. The \a event
1040 parameter provides information about the event.
1044 \qmlsignal QtQuick2::Keys::onDigit3Pressed(KeyEvent event)
1046 This handler is called when the digit '3' has been pressed. The \a event
1047 parameter provides information about the event.
1051 \qmlsignal QtQuick2::Keys::onDigit4Pressed(KeyEvent event)
1053 This handler is called when the digit '4' has been pressed. The \a event
1054 parameter provides information about the event.
1058 \qmlsignal QtQuick2::Keys::onDigit5Pressed(KeyEvent event)
1060 This handler is called when the digit '5' has been pressed. The \a event
1061 parameter provides information about the event.
1065 \qmlsignal QtQuick2::Keys::onDigit6Pressed(KeyEvent event)
1067 This handler is called when the digit '6' has been pressed. The \a event
1068 parameter provides information about the event.
1072 \qmlsignal QtQuick2::Keys::onDigit7Pressed(KeyEvent event)
1074 This handler is called when the digit '7' has been pressed. The \a event
1075 parameter provides information about the event.
1079 \qmlsignal QtQuick2::Keys::onDigit8Pressed(KeyEvent event)
1081 This handler is called when the digit '8' has been pressed. The \a event
1082 parameter provides information about the event.
1086 \qmlsignal QtQuick2::Keys::onDigit9Pressed(KeyEvent event)
1088 This handler is called when the digit '9' has been pressed. The \a event
1089 parameter provides information about the event.
1093 \qmlsignal QtQuick2::Keys::onLeftPressed(KeyEvent event)
1095 This handler is called when the Left arrow has been pressed. The \a event
1096 parameter provides information about the event.
1100 \qmlsignal QtQuick2::Keys::onRightPressed(KeyEvent event)
1102 This handler is called when the Right arrow has been pressed. The \a event
1103 parameter provides information about the event.
1107 \qmlsignal QtQuick2::Keys::onUpPressed(KeyEvent event)
1109 This handler is called when the Up arrow has been pressed. The \a event
1110 parameter provides information about the event.
1114 \qmlsignal QtQuick2::Keys::onDownPressed(KeyEvent event)
1116 This handler is called when the Down arrow has been pressed. The \a event
1117 parameter provides information about the event.
1121 \qmlsignal QtQuick2::Keys::onTabPressed(KeyEvent event)
1123 This handler is called when the Tab key has been pressed. The \a event
1124 parameter provides information about the event.
1128 \qmlsignal QtQuick2::Keys::onBacktabPressed(KeyEvent event)
1130 This handler is called when the Shift+Tab key combination (Backtab) has
1131 been pressed. The \a event parameter provides information about the event.
1135 \qmlsignal QtQuick2::Keys::onAsteriskPressed(KeyEvent event)
1137 This handler is called when the Asterisk '*' has been pressed. The \a event
1138 parameter provides information about the event.
1142 \qmlsignal QtQuick2::Keys::onEscapePressed(KeyEvent event)
1144 This handler is called when the Escape key has been pressed. The \a event
1145 parameter provides information about the event.
1149 \qmlsignal QtQuick2::Keys::onReturnPressed(KeyEvent event)
1151 This handler is called when the Return key has been pressed. The \a event
1152 parameter provides information about the event.
1156 \qmlsignal QtQuick2::Keys::onEnterPressed(KeyEvent event)
1158 This handler is called when the Enter key has been pressed. The \a event
1159 parameter provides information about the event.
1163 \qmlsignal QtQuick2::Keys::onDeletePressed(KeyEvent event)
1165 This handler is called when the Delete key has been pressed. The \a event
1166 parameter provides information about the event.
1170 \qmlsignal QtQuick2::Keys::onSpacePressed(KeyEvent event)
1172 This handler is called when the Space key has been pressed. The \a event
1173 parameter provides information about the event.
1177 \qmlsignal QtQuick2::Keys::onBackPressed(KeyEvent event)
1179 This handler is called when the Back key has been pressed. The \a event
1180 parameter provides information about the event.
1184 \qmlsignal QtQuick2::Keys::onCancelPressed(KeyEvent event)
1186 This handler is called when the Cancel key has been pressed. The \a event
1187 parameter provides information about the event.
1191 \qmlsignal QtQuick2::Keys::onSelectPressed(KeyEvent event)
1193 This handler is called when the Select key has been pressed. The \a event
1194 parameter provides information about the event.
1198 \qmlsignal QtQuick2::Keys::onYesPressed(KeyEvent event)
1200 This handler is called when the Yes key has been pressed. The \a event
1201 parameter provides information about the event.
1205 \qmlsignal QtQuick2::Keys::onNoPressed(KeyEvent event)
1207 This handler is called when the No key has been pressed. The \a event
1208 parameter provides information about the event.
1212 \qmlsignal QtQuick2::Keys::onContext1Pressed(KeyEvent event)
1214 This handler is called when the Context1 key has been pressed. The \a event
1215 parameter provides information about the event.
1219 \qmlsignal QtQuick2::Keys::onContext2Pressed(KeyEvent event)
1221 This handler is called when the Context2 key has been pressed. The \a event
1222 parameter provides information about the event.
1226 \qmlsignal QtQuick2::Keys::onContext3Pressed(KeyEvent event)
1228 This handler is called when the Context3 key has been pressed. The \a event
1229 parameter provides information about the event.
1233 \qmlsignal QtQuick2::Keys::onContext4Pressed(KeyEvent event)
1235 This handler is called when the Context4 key has been pressed. The \a event
1236 parameter provides information about the event.
1240 \qmlsignal QtQuick2::Keys::onCallPressed(KeyEvent event)
1242 This handler is called when the Call key has been pressed. The \a event
1243 parameter provides information about the event.
1247 \qmlsignal QtQuick2::Keys::onHangupPressed(KeyEvent event)
1249 This handler is called when the Hangup key has been pressed. The \a event
1250 parameter provides information about the event.
1254 \qmlsignal QtQuick2::Keys::onFlipPressed(KeyEvent event)
1256 This handler is called when the Flip key has been pressed. The \a event
1257 parameter provides information about the event.
1261 \qmlsignal QtQuick2::Keys::onMenuPressed(KeyEvent event)
1263 This handler is called when the Menu key has been pressed. The \a event
1264 parameter provides information about the event.
1268 \qmlsignal QtQuick2::Keys::onVolumeUpPressed(KeyEvent event)
1270 This handler is called when the VolumeUp key has been pressed. The \a event
1271 parameter provides information about the event.
1275 \qmlsignal QtQuick2::Keys::onVolumeDownPressed(KeyEvent event)
1277 This handler is called when the VolumeDown key has been pressed. The \a event
1278 parameter provides information about the event.
1281 QQuickKeysAttached::QQuickKeysAttached(QObject *parent)
1282 : QObject(*(new QQuickKeysAttachedPrivate), parent),
1283 QQuickItemKeyFilter(qobject_cast<QQuickItem*>(parent))
1285 Q_D(QQuickKeysAttached);
1286 m_processPost = false;
1287 d->item = qobject_cast<QQuickItem*>(parent);
1290 QQuickKeysAttached::~QQuickKeysAttached()
1294 QQuickKeysAttached::Priority QQuickKeysAttached::priority() const
1296 return m_processPost ? AfterItem : BeforeItem;
1299 void QQuickKeysAttached::setPriority(Priority order)
1301 bool processPost = order == AfterItem;
1302 if (processPost != m_processPost) {
1303 m_processPost = processPost;
1304 emit priorityChanged();
1308 void QQuickKeysAttached::componentComplete()
1310 Q_D(QQuickKeysAttached);
1312 for (int ii = 0; ii < d->targets.count(); ++ii) {
1313 QQuickItem *targetItem = d->targets.at(ii);
1314 if (targetItem && (targetItem->flags() & QQuickItem::ItemAcceptsInputMethod)) {
1315 d->item->setFlag(QQuickItem::ItemAcceptsInputMethod);
1322 void QQuickKeysAttached::keyPressed(QKeyEvent *event, bool post)
1324 Q_D(QQuickKeysAttached);
1325 if (post != m_processPost || !d->enabled || d->inPress) {
1327 QQuickItemKeyFilter::keyPressed(event, post);
1331 // first process forwards
1332 if (d->item && d->item->canvas()) {
1334 for (int ii = 0; ii < d->targets.count(); ++ii) {
1335 QQuickItem *i = d->targets.at(ii);
1336 if (i && i->isVisible()) {
1337 d->item->canvas()->sendEvent(i, event);
1338 if (event->isAccepted()) {
1347 QQuickKeyEvent ke(*event);
1348 QByteArray keySignal = keyToSignal(event->key());
1349 if (!keySignal.isEmpty()) {
1350 keySignal += "(QQuickKeyEvent*)";
1351 if (d->isConnected(keySignal)) {
1352 // If we specifically handle a key then default to accepted
1353 ke.setAccepted(true);
1354 int idx = QQuickKeysAttached::staticMetaObject.indexOfSignal(keySignal);
1355 metaObject()->method(idx).invoke(this, Qt::DirectConnection, Q_ARG(QQuickKeyEvent*, &ke));
1358 if (!ke.isAccepted())
1360 event->setAccepted(ke.isAccepted());
1362 if (!event->isAccepted()) QQuickItemKeyFilter::keyPressed(event, post);
1365 void QQuickKeysAttached::keyReleased(QKeyEvent *event, bool post)
1367 Q_D(QQuickKeysAttached);
1368 if (post != m_processPost || !d->enabled || d->inRelease) {
1370 QQuickItemKeyFilter::keyReleased(event, post);
1374 if (d->item && d->item->canvas()) {
1375 d->inRelease = true;
1376 for (int ii = 0; ii < d->targets.count(); ++ii) {
1377 QQuickItem *i = d->targets.at(ii);
1378 if (i && i->isVisible()) {
1379 d->item->canvas()->sendEvent(i, event);
1380 if (event->isAccepted()) {
1381 d->inRelease = false;
1386 d->inRelease = false;
1389 QQuickKeyEvent ke(*event);
1391 event->setAccepted(ke.isAccepted());
1393 if (!event->isAccepted()) QQuickItemKeyFilter::keyReleased(event, post);
1396 void QQuickKeysAttached::inputMethodEvent(QInputMethodEvent *event, bool post)
1398 Q_D(QQuickKeysAttached);
1399 if (post == m_processPost && d->item && !d->inIM && d->item->canvas()) {
1401 for (int ii = 0; ii < d->targets.count(); ++ii) {
1402 QQuickItem *i = d->targets.at(ii);
1403 if (i && i->isVisible() && (i->flags() & QQuickItem::ItemAcceptsInputMethod)) {
1404 d->item->canvas()->sendEvent(i, event);
1405 if (event->isAccepted()) {
1414 QQuickItemKeyFilter::inputMethodEvent(event, post);
1417 QVariant QQuickKeysAttached::inputMethodQuery(Qt::InputMethodQuery query) const
1419 Q_D(const QQuickKeysAttached);
1421 for (int ii = 0; ii < d->targets.count(); ++ii) {
1422 QQuickItem *i = d->targets.at(ii);
1423 if (i && i->isVisible() && (i->flags() & QQuickItem::ItemAcceptsInputMethod) && i == d->imeItem) {
1424 //### how robust is i == d->imeItem check?
1425 QVariant v = i->inputMethodQuery(query);
1426 if (v.userType() == QVariant::RectF)
1427 v = d->item->mapRectFromItem(i, v.toRectF()); //### cost?
1432 return QQuickItemKeyFilter::inputMethodQuery(query);
1435 QQuickKeysAttached *QQuickKeysAttached::qmlAttachedProperties(QObject *obj)
1437 return new QQuickKeysAttached(obj);
1441 \qmlclass LayoutMirroring QQuickLayoutMirroringAttached
1442 \inqmlmodule QtQuick 2
1443 \ingroup qml-utility-elements
1444 \brief The LayoutMirroring attached property is used to mirror layout behavior.
1446 The LayoutMirroring attached property is used to horizontally mirror \l {anchor-layout}{Item anchors},
1447 \l{Using QML Positioner and Repeater Items}{positioner} elements (such as \l Row and \l Grid)
1448 and views (such as \l GridView and horizontal \l ListView). Mirroring is a visual change: left
1449 anchors become right anchors, and positioner elements like \l Grid and \l Row reverse the
1450 horizontal layout of child items.
1452 Mirroring is enabled for an item by setting the \l enabled property to true. By default, this
1453 only affects the item itself; setting the \l childrenInherit property to true propagates the mirroring
1454 behavior to all child elements as well. If the \c LayoutMirroring attached property has not been defined
1455 for an item, mirroring is not enabled.
1457 The following example shows mirroring in action. The \l Row below is specified as being anchored
1458 to the left of its parent. However, since mirroring has been enabled, the anchor is horizontally
1459 reversed and it is now anchored to the right. Also, since items in a \l Row are positioned
1460 from left to right by default, they are now positioned from right to left instead, as demonstrated
1461 by the numbering and opacity of the items:
1463 \snippet doc/src/snippets/declarative/layoutmirroring.qml 0
1465 \image layoutmirroring.png
1467 Layout mirroring is useful when it is necessary to support both left-to-right and right-to-left
1468 layout versions of an application to target different language areas. The \l childrenInherit
1469 property allows layout mirroring to be applied without manually setting layout configurations
1470 for every item in an application. Keep in mind, however, that mirroring does not affect any
1471 positioning that is defined by the \l Item \l {Item::}{x} coordinate value, so even with
1472 mirroring enabled, it will often be necessary to apply some layout fixes to support the
1473 desired layout direction. Also, it may be necessary to disable the mirroring of individual
1474 child items (by setting \l {enabled}{LayoutMirroring.enabled} to false for such items) if
1475 mirroring is not the desired behavior, or if the child item already implements mirroring in
1478 See \l {QML Right-to-left User Interfaces} for further details on using \c LayoutMirroring and
1479 other related features to implement right-to-left support for an application.
1483 \qmlproperty bool QtQuick2::LayoutMirroring::enabled
1485 This property holds whether the item's layout is mirrored horizontally. Setting this to true
1486 horizontally reverses \l {anchor-layout}{anchor} settings such that left anchors become right,
1487 and right anchors become left. For \l{Using QML Positioner and Repeater Items}{positioner} elements
1488 (such as \l Row and \l Grid) and view elements (such as \l {GridView}{GridView} and \l {ListView}{ListView})
1489 this also mirrors the horizontal layout direction of the item.
1491 The default value is false.
1495 \qmlproperty bool QtQuick2::LayoutMirroring::childrenInherit
1497 This property holds whether the \l {enabled}{LayoutMirroring.enabled} value for this item
1498 is inherited by its children.
1500 The default value is false.
1504 QQuickLayoutMirroringAttached::QQuickLayoutMirroringAttached(QObject *parent) : QObject(parent), itemPrivate(0)
1506 if (QQuickItem *item = qobject_cast<QQuickItem*>(parent)) {
1507 itemPrivate = QQuickItemPrivate::get(item);
1508 itemPrivate->attachedLayoutDirection = this;
1510 qmlInfo(parent) << tr("LayoutDirection attached property only works with Items");
1513 QQuickLayoutMirroringAttached * QQuickLayoutMirroringAttached::qmlAttachedProperties(QObject *object)
1515 return new QQuickLayoutMirroringAttached(object);
1518 bool QQuickLayoutMirroringAttached::enabled() const
1520 return itemPrivate ? itemPrivate->effectiveLayoutMirror : false;
1523 void QQuickLayoutMirroringAttached::setEnabled(bool enabled)
1528 itemPrivate->isMirrorImplicit = false;
1529 if (enabled != itemPrivate->effectiveLayoutMirror) {
1530 itemPrivate->setLayoutMirror(enabled);
1531 if (itemPrivate->inheritMirrorFromItem)
1532 itemPrivate->resolveLayoutMirror();
1536 void QQuickLayoutMirroringAttached::resetEnabled()
1538 if (itemPrivate && !itemPrivate->isMirrorImplicit) {
1539 itemPrivate->isMirrorImplicit = true;
1540 itemPrivate->resolveLayoutMirror();
1544 bool QQuickLayoutMirroringAttached::childrenInherit() const
1546 return itemPrivate ? itemPrivate->inheritMirrorFromItem : false;
1549 void QQuickLayoutMirroringAttached::setChildrenInherit(bool childrenInherit) {
1550 if (itemPrivate && childrenInherit != itemPrivate->inheritMirrorFromItem) {
1551 itemPrivate->inheritMirrorFromItem = childrenInherit;
1552 itemPrivate->resolveLayoutMirror();
1553 childrenInheritChanged();
1557 void QQuickItemPrivate::resolveLayoutMirror()
1560 if (QQuickItem *parentItem = q->parentItem()) {
1561 QQuickItemPrivate *parentPrivate = QQuickItemPrivate::get(parentItem);
1562 setImplicitLayoutMirror(parentPrivate->inheritedLayoutMirror, parentPrivate->inheritMirrorFromParent);
1564 setImplicitLayoutMirror(isMirrorImplicit ? false : effectiveLayoutMirror, inheritMirrorFromItem);
1568 void QQuickItemPrivate::setImplicitLayoutMirror(bool mirror, bool inherit)
1570 inherit = inherit || inheritMirrorFromItem;
1571 if (!isMirrorImplicit && inheritMirrorFromItem)
1572 mirror = effectiveLayoutMirror;
1573 if (mirror == inheritedLayoutMirror && inherit == inheritMirrorFromParent)
1576 inheritMirrorFromParent = inherit;
1577 inheritedLayoutMirror = inheritMirrorFromParent ? mirror : false;
1579 if (isMirrorImplicit)
1580 setLayoutMirror(inherit ? inheritedLayoutMirror : false);
1581 for (int i = 0; i < childItems.count(); ++i) {
1582 if (QQuickItem *child = qobject_cast<QQuickItem *>(childItems.at(i))) {
1583 QQuickItemPrivate *childPrivate = QQuickItemPrivate::get(child);
1584 childPrivate->setImplicitLayoutMirror(inheritedLayoutMirror, inheritMirrorFromParent);
1589 void QQuickItemPrivate::setLayoutMirror(bool mirror)
1591 if (mirror != effectiveLayoutMirror) {
1592 effectiveLayoutMirror = mirror;
1594 QQuickAnchorsPrivate *anchor_d = QQuickAnchorsPrivate::get(_anchors);
1595 anchor_d->fillChanged();
1596 anchor_d->centerInChanged();
1597 anchor_d->updateHorizontalAnchors();
1598 emit _anchors->mirroredChanged();
1601 if (attachedLayoutDirection) {
1602 emit attachedLayoutDirection->enabledChanged();
1607 void QQuickItemPrivate::setAccessibleFlagAndListener()
1610 QQuickItem *item = q;
1612 if (item->d_func()->isAccessible)
1613 break; // already set - grandparents should have the flag set as well.
1615 if (item->canvas() && item->canvas()->rootItem() == item)
1616 break; // don't add a listener to the canvas root item
1618 item->d_func()->isAccessible = true;
1619 item = item->d_func()->parentItem;
1625 \brief The QQuickItem class provides the most basic of all visual items in QML.
1629 All visual items in Qt Declarative inherit from QQuickItem. Although QQuickItem
1630 has no visual appearance, it defines all the properties that are
1631 common across visual items - such as the x and y position, the
1632 width and height, \l {anchor-layout}{anchoring} and key handling.
1634 You can subclass QQuickItem to provide your own custom visual item that inherits
1635 these features. Note that, because it does not draw anything, QQuickItem sets the
1636 QGraphicsItem::ItemHasNoContents flag. If you subclass QQuickItem to create a visual
1637 item, you will need to unset this flag.
1642 \qmlclass Item QQuickItem
1643 \inqmlmodule QtQuick 2
1644 \ingroup qml-basic-visual-elements
1645 \brief The Item is the most basic of all visual items in QML.
1647 All visual items in Qt Declarative inherit from Item. Although Item
1648 has no visual appearance, it defines all the properties that are
1649 common across visual items - such as the x and y position, the
1650 width and height, \l {anchor-layout}{anchoring} and key handling.
1652 Item is also useful for grouping items together.
1669 fillMode: Image.Tile
1676 \section1 Key Handling
1678 Key handling is available to all Item-based visual elements via the \l {Keys}{Keys}
1679 attached property. The \e Keys attached property provides basic handlers such
1680 as \l {Keys::onPressed}{onPressed} and \l {Keys::onReleased}{onReleased},
1681 as well as handlers for specific keys, such as
1682 \l {Keys::onCancelPressed}{onCancelPressed}. The example below
1683 assigns \l {qmlfocus}{focus} to the item and handles
1684 the Left key via the general \e onPressed handler and the Select key via the
1685 onSelectPressed handler:
1691 if (event.key == Qt.Key_Left) {
1692 console.log("move left");
1693 event.accepted = true;
1696 Keys.onSelectPressed: console.log("Selected");
1700 See the \l {Keys}{Keys} attached property for detailed documentation.
1702 \section1 Layout Mirroring
1704 Item layouts can be mirrored using the \l {LayoutMirroring}{LayoutMirroring} attached property.
1709 \fn void QQuickItem::childrenRectChanged(const QRectF &)
1714 \fn void QQuickItem::baselineOffsetChanged(qreal)
1719 \fn void QQuickItem::stateChanged(const QString &state)
1724 \fn void QQuickItem::parentChanged(QQuickItem *)
1729 \fn void QQuickItem::smoothChanged(bool)
1734 \fn void QQuickItem::clipChanged(bool)
1738 /*! \fn void QQuickItem::transformOriginChanged(TransformOrigin)
1743 \fn void QQuickItem::focusChanged(bool)
1748 \fn void QQuickItem::activeFocusChanged(bool)
1752 \fn QQuickItem::QQuickItem(QQuickItem *parent)
1754 Constructs a QQuickItem with the given \a parent.
1756 QQuickItem::QQuickItem(QQuickItem* parent)
1757 : QObject(*(new QQuickItemPrivate), parent)
1765 QQuickItem::QQuickItem(QQuickItemPrivate &dd, QQuickItem *parent)
1766 : QObject(dd, parent)
1773 static int qt_item_count = 0;
1775 static void qt_print_item_count()
1777 qDebug("Number of leaked items: %i", qt_item_count);
1783 Destroys the QQuickItem.
1785 QQuickItem::~QQuickItem()
1789 if (qt_item_count < 0)
1790 qDebug("Item destroyed after qt_print_item_count() was called.");
1797 else if (d->canvas && d->itemNodeInstance)
1798 QQuickCanvasPrivate::get(d->canvas)->cleanup(d->itemNodeInstance); // cleanup root
1799 // XXX todo - optimize
1800 while (!d->childItems.isEmpty())
1801 d->childItems.first()->setParentItem(0);
1803 for (int ii = 0; ii < d->changeListeners.count(); ++ii) {
1804 QQuickAnchorsPrivate *anchor = d->changeListeners.at(ii).listener->anchorPrivate();
1806 anchor->clearItem(this);
1810 update item anchors that depended on us unless they are our child (and will also be destroyed),
1811 or our sibling, and our parent is also being destroyed.
1813 for (int ii = 0; ii < d->changeListeners.count(); ++ii) {
1814 QQuickAnchorsPrivate *anchor = d->changeListeners.at(ii).listener->anchorPrivate();
1815 if (anchor && anchor->item && anchor->item->parentItem() && anchor->item->parentItem() != this)
1819 for (int ii = 0; ii < d->changeListeners.count(); ++ii) {
1820 const QQuickItemPrivate::ChangeListener &change = d->changeListeners.at(ii);
1821 if (change.types & QQuickItemPrivate::Destroyed)
1822 change.listener->itemDestroyed(this);
1825 d->changeListeners.clear();
1826 delete d->_anchorLines; d->_anchorLines = 0;
1827 delete d->_anchors; d->_anchors = 0;
1828 delete d->_stateGroup; d->_stateGroup = 0;
1829 delete d->_contents; d->_contents = 0;
1834 \qmlproperty enumeration QtQuick2::Item::transformOrigin
1835 This property holds the origin point around which scale and rotation transform.
1837 Nine transform origins are available, as shown in the image below.
1839 \image declarative-transformorigin.png
1841 This example rotates an image around its bottom-right corner.
1844 source: "myimage.png"
1845 transformOrigin: Item.BottomRight
1850 The default transform origin is \c Item.Center.
1852 To set an arbitrary transform origin point use the \l Scale or \l Rotation
1857 \qmlproperty Item QtQuick2::Item::parent
1858 This property holds the parent of the item.
1862 \property QQuickItem::parent
1863 This property holds the parent of the item.
1865 void QQuickItem::setParentItem(QQuickItem *parentItem)
1868 if (parentItem == d->parentItem)
1871 d->removeFromDirtyList();
1873 QQuickItem *oldParentItem = d->parentItem;
1874 QQuickItem *scopeFocusedItem = 0;
1876 if (oldParentItem) {
1877 QQuickItemPrivate *op = QQuickItemPrivate::get(oldParentItem);
1879 QQuickItem *scopeItem = 0;
1881 if (d->canvas && hasFocus()) {
1882 scopeItem = oldParentItem;
1883 while (!scopeItem->isFocusScope()) scopeItem = scopeItem->parentItem();
1884 scopeFocusedItem = this;
1885 } else if (d->canvas && !isFocusScope() && d->subFocusItem) {
1886 scopeItem = oldParentItem;
1887 while (!scopeItem->isFocusScope()) scopeItem = scopeItem->parentItem();
1888 scopeFocusedItem = d->subFocusItem;
1891 if (scopeFocusedItem)
1892 QQuickCanvasPrivate::get(d->canvas)->clearFocusInScope(scopeItem, scopeFocusedItem,
1893 QQuickCanvasPrivate::DontChangeFocusProperty);
1895 op->removeChild(this);
1896 } else if (d->canvas) {
1897 QQuickCanvasPrivate::get(d->canvas)->parentlessItems.remove(this);
1900 d->parentItem = parentItem;
1902 QQuickCanvas *parentCanvas = parentItem?QQuickItemPrivate::get(parentItem)->canvas:0;
1903 if (d->canvas != parentCanvas) {
1904 QQuickItemPrivate::InitializationState initState;
1906 d->initCanvas(&initState, parentCanvas);
1909 d->dirty(QQuickItemPrivate::ParentChanged);
1912 QQuickItemPrivate::get(d->parentItem)->addChild(this);
1914 d->setEffectiveVisibleRecur(d->calcEffectiveVisible());
1915 d->setEffectiveEnableRecur(d->calcEffectiveEnable());
1917 if (scopeFocusedItem && d->parentItem && d->canvas) {
1918 // We need to test whether this item becomes scope focused
1919 QQuickItem *scopeItem = 0;
1920 scopeItem = d->parentItem;
1921 while (!scopeItem->isFocusScope()) scopeItem = scopeItem->parentItem();
1923 if (scopeItem->scopedFocusItem()) {
1924 QQuickItemPrivate::get(scopeFocusedItem)->focus = false;
1925 emit scopeFocusedItem->focusChanged(false);
1927 QQuickCanvasPrivate::get(d->canvas)->setFocusInScope(scopeItem, scopeFocusedItem,
1928 QQuickCanvasPrivate::DontChangeFocusProperty);
1932 d->resolveLayoutMirror();
1934 d->itemChange(ItemParentHasChanged, d->parentItem);
1936 d->parentNotifier.notify();
1937 if (d->isAccessible && d->parentItem) {
1938 d->parentItem->d_func()->setAccessibleFlagAndListener();
1941 emit parentChanged(d->parentItem);
1944 void QQuickItem::stackBefore(const QQuickItem *sibling)
1947 if (!sibling || sibling == this || !d->parentItem || d->parentItem != QQuickItemPrivate::get(sibling)->parentItem) {
1948 qWarning("QQuickItem::stackBefore: Cannot stack before %p, which must be a sibling", sibling);
1952 QQuickItemPrivate *parentPrivate = QQuickItemPrivate::get(d->parentItem);
1954 int myIndex = parentPrivate->childItems.indexOf(this);
1955 int siblingIndex = parentPrivate->childItems.indexOf(const_cast<QQuickItem *>(sibling));
1957 Q_ASSERT(myIndex != -1 && siblingIndex != -1);
1959 if (myIndex == siblingIndex - 1)
1962 parentPrivate->childItems.removeAt(myIndex);
1964 if (myIndex < siblingIndex) --siblingIndex;
1966 parentPrivate->childItems.insert(siblingIndex, this);
1968 parentPrivate->dirty(QQuickItemPrivate::ChildrenStackingChanged);
1969 parentPrivate->markSortedChildrenDirty(this);
1971 for (int ii = qMin(siblingIndex, myIndex); ii < parentPrivate->childItems.count(); ++ii)
1972 QQuickItemPrivate::get(parentPrivate->childItems.at(ii))->siblingOrderChanged();
1975 void QQuickItem::stackAfter(const QQuickItem *sibling)
1978 if (!sibling || sibling == this || !d->parentItem || d->parentItem != QQuickItemPrivate::get(sibling)->parentItem) {
1979 qWarning("QQuickItem::stackAfter: Cannot stack after %p, which must be a sibling", sibling);
1983 QQuickItemPrivate *parentPrivate = QQuickItemPrivate::get(d->parentItem);
1985 int myIndex = parentPrivate->childItems.indexOf(this);
1986 int siblingIndex = parentPrivate->childItems.indexOf(const_cast<QQuickItem *>(sibling));
1988 Q_ASSERT(myIndex != -1 && siblingIndex != -1);
1990 if (myIndex == siblingIndex + 1)
1993 parentPrivate->childItems.removeAt(myIndex);
1995 if (myIndex < siblingIndex) --siblingIndex;
1997 parentPrivate->childItems.insert(siblingIndex + 1, this);
1999 parentPrivate->dirty(QQuickItemPrivate::ChildrenStackingChanged);
2000 parentPrivate->markSortedChildrenDirty(this);
2002 for (int ii = qMin(myIndex, siblingIndex + 1); ii < parentPrivate->childItems.count(); ++ii)
2003 QQuickItemPrivate::get(parentPrivate->childItems.at(ii))->siblingOrderChanged();
2007 Returns the QQuickItem parent of this item.
2009 QQuickItem *QQuickItem::parentItem() const
2011 Q_D(const QQuickItem);
2012 return d->parentItem;
2015 QSGEngine *QQuickItem::sceneGraphEngine() const
2017 return canvas()->sceneGraphEngine();
2020 QQuickCanvas *QQuickItem::canvas() const
2022 Q_D(const QQuickItem);
2026 static bool itemZOrder_sort(QQuickItem *lhs, QQuickItem *rhs)
2028 return lhs->z() < rhs->z();
2031 QList<QQuickItem *> QQuickItemPrivate::paintOrderChildItems() const
2033 if (sortedChildItems)
2034 return *sortedChildItems;
2036 // If none of the items have set Z then the paint order list is the same as
2037 // the childItems list. This is by far the most common case.
2039 for (int i = 0; i < childItems.count(); ++i) {
2040 if (QQuickItemPrivate::get(childItems.at(i))->z != 0.) {
2046 sortedChildItems = new QList<QQuickItem*>(childItems);
2047 qStableSort(sortedChildItems->begin(), sortedChildItems->end(), itemZOrder_sort);
2048 return *sortedChildItems;
2051 sortedChildItems = const_cast<QList<QQuickItem*>*>(&childItems);
2056 void QQuickItemPrivate::addChild(QQuickItem *child)
2060 Q_ASSERT(!childItems.contains(child));
2062 childItems.append(child);
2064 markSortedChildrenDirty(child);
2065 dirty(QQuickItemPrivate::ChildrenChanged);
2067 itemChange(QQuickItem::ItemChildAddedChange, child);
2069 emit q->childrenChanged();
2072 void QQuickItemPrivate::removeChild(QQuickItem *child)
2077 Q_ASSERT(childItems.contains(child));
2078 childItems.removeOne(child);
2079 Q_ASSERT(!childItems.contains(child));
2081 markSortedChildrenDirty(child);
2082 dirty(QQuickItemPrivate::ChildrenChanged);
2084 itemChange(QQuickItem::ItemChildRemovedChange, child);
2086 emit q->childrenChanged();
2089 void QQuickItemPrivate::InitializationState::clear()
2094 void QQuickItemPrivate::InitializationState::clear(QQuickItem *fs)
2099 QQuickItem *QQuickItemPrivate::InitializationState::getFocusScope(QQuickItem *item)
2102 QQuickItem *fs = item->parentItem();
2103 while (!fs->isFocusScope())
2104 fs = fs->parentItem();
2110 void QQuickItemPrivate::initCanvas(InitializationState *state, QQuickCanvas *c)
2115 removeFromDirtyList();
2116 QQuickCanvasPrivate *c = QQuickCanvasPrivate::get(canvas);
2117 if (polishScheduled)
2118 c->itemsToPolish.remove(q);
2119 if (c->mouseGrabberItem == q)
2120 c->mouseGrabberItem = 0;
2122 c->hoverItems.removeAll(q);
2123 if (itemNodeInstance)
2124 c->cleanup(itemNodeInstance);
2126 c->parentlessItems.remove(q);
2131 if (canvas && polishScheduled)
2132 QQuickCanvasPrivate::get(canvas)->itemsToPolish.insert(q);
2134 itemNodeInstance = 0;
2140 beforePaintNode = 0;
2142 InitializationState _dummy;
2143 InitializationState *childState = state;
2145 if (c && q->isFocusScope()) {
2147 childState = &_dummy;
2150 if (!parentItem && canvas)
2151 QQuickCanvasPrivate::get(canvas)->parentlessItems.insert(q);
2153 for (int ii = 0; ii < childItems.count(); ++ii) {
2154 QQuickItem *child = childItems.at(ii);
2155 QQuickItemPrivate::get(child)->initCanvas(childState, c);
2160 if (state->getFocusScope(q)->scopedFocusItem()) {
2162 emit q->focusChanged(false);
2164 QQuickCanvasPrivate::get(canvas)->setFocusInScope(state->getFocusScope(q), q);
2171 screenAttached->canvasChanged(c);
2172 itemChange(QQuickItem::ItemSceneChange, c);
2176 Returns a transform that maps points from canvas space into item space.
2178 QTransform QQuickItemPrivate::canvasToItemTransform() const
2180 // XXX todo - optimize
2181 return itemToCanvasTransform().inverted();
2185 Returns a transform that maps points from item space into canvas space.
2187 QTransform QQuickItemPrivate::itemToCanvasTransform() const
2190 QTransform rv = parentItem?QQuickItemPrivate::get(parentItem)->itemToCanvasTransform():QTransform();
2191 itemToParentTransform(rv);
2196 Motifies \a t with this items local transform relative to its parent.
2198 void QQuickItemPrivate::itemToParentTransform(QTransform &t) const
2203 if (!transforms.isEmpty()) {
2205 for (int ii = transforms.count() - 1; ii >= 0; --ii)
2206 transforms.at(ii)->applyTo(&m);
2207 t = m.toTransform();
2210 if (scale != 1. || rotation != 0.) {
2211 QPointF tp = computeTransformOrigin();
2212 t.translate(tp.x(), tp.y());
2213 t.scale(scale, scale);
2215 t.translate(-tp.x(), -tp.y());
2221 \qmlproperty real QtQuick2::Item::childrenRect.x
2222 \qmlproperty real QtQuick2::Item::childrenRect.y
2223 \qmlproperty real QtQuick2::Item::childrenRect.width
2224 \qmlproperty real QtQuick2::Item::childrenRect.height
2226 The childrenRect properties allow an item access to the geometry of its
2227 children. This property is useful if you have an item that needs to be
2228 sized to fit its children.
2233 \qmlproperty list<Item> QtQuick2::Item::children
2234 \qmlproperty list<Object> QtQuick2::Item::resources
2236 The children property contains the list of visual children of this item.
2237 The resources property contains non-visual resources that you want to
2240 Generally you can rely on Item's default property to handle all this for
2241 you, but it can come in handy in some cases.
2260 Returns true if construction of the QML component is complete; otherwise
2263 It is often desirable to delay some processing until the component is
2266 \sa componentComplete()
2268 bool QQuickItem::isComponentComplete() const
2270 Q_D(const QQuickItem);
2271 return d->componentComplete;
2274 QQuickItemPrivate::QQuickItemPrivate()
2275 : _anchors(0), _contents(0), baselineOffset(0), _anchorLines(0), _stateGroup(0), origin(QQuickItem::Center),
2277 flags(0), widthValid(false), heightValid(false), componentComplete(true),
2278 keepMouse(false), keepTouch(false), hoverEnabled(false), smooth(false), focus(false), activeFocus(false), notifiedFocus(false),
2279 notifiedActiveFocus(false), filtersChildMouseEvents(false), explicitVisible(true),
2280 effectiveVisible(true), explicitEnable(true), effectiveEnable(true), polishScheduled(false),
2281 inheritedLayoutMirror(false), effectiveLayoutMirror(false), isMirrorImplicit(true),
2282 inheritMirrorFromParent(false), inheritMirrorFromItem(false), childrenDoNotOverlap(false),
2283 staticSubtreeGeometry(false),
2284 isAccessible(false),
2286 canvas(0), parentItem(0), sortedChildItems(&childItems),
2290 x(0), y(0), width(0), height(0), implicitWidth(0), implicitHeight(0),
2291 z(0), scale(1), rotation(0), opacity(1),
2293 attachedLayoutDirection(0), acceptedMouseButtons(0),
2294 imHints(Qt::ImhNone),
2298 dirtyAttributes(0), nextDirtyItem(0), prevDirtyItem(0),
2300 itemNodeInstance(0), opacityNode(0), clipNode(0), rootNode(0), groupNode(0), paintNode(0)
2301 , beforePaintNode(0), effectRefCount(0), hideRefCount(0)
2302 , screenAttached(0), _layer(0)
2306 QQuickItemPrivate::~QQuickItemPrivate()
2308 if (sortedChildItems != &childItems)
2309 delete sortedChildItems;
2312 void QQuickItemPrivate::init(QQuickItem *parent)
2316 static bool atexit_registered = false;
2317 if (!atexit_registered) {
2318 atexit(qt_print_item_count);
2319 atexit_registered = true;
2325 registerAccessorProperties();
2327 baselineOffset.invalidate();
2330 q->setParentItem(parent);
2331 QQuickItemPrivate *parentPrivate = QQuickItemPrivate::get(parent);
2332 setImplicitLayoutMirror(parentPrivate->inheritedLayoutMirror, parentPrivate->inheritMirrorFromParent);
2336 void QQuickItemPrivate::data_append(QDeclarativeListProperty<QObject> *prop, QObject *o)
2341 QQuickItem *that = static_cast<QQuickItem *>(prop->object);
2343 // This test is measurably (albeit only slightly) faster than qobject_cast<>()
2344 const QMetaObject *mo = o->metaObject();
2345 while (mo && mo != &QQuickItem::staticMetaObject) {
2346 mo = mo->d.superdata;
2350 QQuickItem *item = static_cast<QQuickItem *>(o);
2351 item->setParentItem(that);
2353 if (o->inherits("QGraphicsItem"))
2354 qWarning("Cannot add a QtQuick 1.0 item (%s) into a QtQuick 2.0 scene!", o->metaObject()->className());
2356 // XXX todo - do we really want this behavior?
2362 \qmlproperty list<Object> QtQuick2::Item::data
2365 The data property allows you to freely mix visual children and resources
2366 in an item. If you assign a visual item to the data list it becomes
2367 a child and if you assign any other object type, it is added as a resource.
2391 data is a behind-the-scenes property: you should never need to explicitly
2395 int QQuickItemPrivate::data_count(QDeclarativeListProperty<QObject> *prop)
2402 QObject *QQuickItemPrivate::data_at(QDeclarativeListProperty<QObject> *prop, int i)
2410 void QQuickItemPrivate::data_clear(QDeclarativeListProperty<QObject> *prop)
2416 QObject *QQuickItemPrivate::resources_at(QDeclarativeListProperty<QObject> *prop, int index)
2418 const QObjectList children = prop->object->children();
2419 if (index < children.count())
2420 return children.at(index);
2425 void QQuickItemPrivate::resources_append(QDeclarativeListProperty<QObject> *prop, QObject *o)
2427 // XXX todo - do we really want this behavior?
2428 o->setParent(prop->object);
2431 int QQuickItemPrivate::resources_count(QDeclarativeListProperty<QObject> *prop)
2433 return prop->object->children().count();
2436 void QQuickItemPrivate::resources_clear(QDeclarativeListProperty<QObject> *prop)
2438 // XXX todo - do we really want this behavior?
2439 const QObjectList children = prop->object->children();
2440 for (int index = 0; index < children.count(); index++)
2441 children.at(index)->setParent(0);
2444 QQuickItem *QQuickItemPrivate::children_at(QDeclarativeListProperty<QQuickItem> *prop, int index)
2446 QQuickItemPrivate *p = QQuickItemPrivate::get(static_cast<QQuickItem *>(prop->object));
2447 if (index >= p->childItems.count() || index < 0)
2450 return p->childItems.at(index);
2453 void QQuickItemPrivate::children_append(QDeclarativeListProperty<QQuickItem> *prop, QQuickItem *o)
2458 QQuickItem *that = static_cast<QQuickItem *>(prop->object);
2459 if (o->parentItem() == that)
2460 o->setParentItem(0);
2462 o->setParentItem(that);
2465 int QQuickItemPrivate::children_count(QDeclarativeListProperty<QQuickItem> *prop)
2467 QQuickItemPrivate *p = QQuickItemPrivate::get(static_cast<QQuickItem *>(prop->object));
2468 return p->childItems.count();
2471 void QQuickItemPrivate::children_clear(QDeclarativeListProperty<QQuickItem> *prop)
2473 QQuickItem *that = static_cast<QQuickItem *>(prop->object);
2474 QQuickItemPrivate *p = QQuickItemPrivate::get(that);
2475 while (!p->childItems.isEmpty())
2476 p->childItems.at(0)->setParentItem(0);
2479 int QQuickItemPrivate::transform_count(QDeclarativeListProperty<QQuickTransform> *prop)
2481 QQuickItem *that = static_cast<QQuickItem *>(prop->object);
2482 return QQuickItemPrivate::get(that)->transforms.count();
2485 void QQuickTransform::appendToItem(QQuickItem *item)
2487 Q_D(QQuickTransform);
2491 QQuickItemPrivate *p = QQuickItemPrivate::get(item);
2493 if (!d->items.isEmpty() && !p->transforms.isEmpty() && p->transforms.contains(this)) {
2494 p->transforms.removeOne(this);
2495 p->transforms.append(this);
2497 p->transforms.append(this);
2498 d->items.append(item);
2501 p->dirty(QQuickItemPrivate::Transform);
2504 void QQuickTransform::prependToItem(QQuickItem *item)
2506 Q_D(QQuickTransform);
2510 QQuickItemPrivate *p = QQuickItemPrivate::get(item);
2512 if (!d->items.isEmpty() && !p->transforms.isEmpty() && p->transforms.contains(this)) {
2513 p->transforms.removeOne(this);
2514 p->transforms.prepend(this);
2516 p->transforms.prepend(this);
2517 d->items.append(item);
2520 p->dirty(QQuickItemPrivate::Transform);
2523 void QQuickItemPrivate::transform_append(QDeclarativeListProperty<QQuickTransform> *prop, QQuickTransform *transform)
2528 QQuickItem *that = static_cast<QQuickItem *>(prop->object);
2529 transform->appendToItem(that);
2532 QQuickTransform *QQuickItemPrivate::transform_at(QDeclarativeListProperty<QQuickTransform> *prop, int idx)
2534 QQuickItem *that = static_cast<QQuickItem *>(prop->object);
2535 QQuickItemPrivate *p = QQuickItemPrivate::get(that);
2537 if (idx < 0 || idx >= p->transforms.count())
2540 return p->transforms.at(idx);
2543 void QQuickItemPrivate::transform_clear(QDeclarativeListProperty<QQuickTransform> *prop)
2545 QQuickItem *that = static_cast<QQuickItem *>(prop->object);
2546 QQuickItemPrivate *p = QQuickItemPrivate::get(that);
2548 for (int ii = 0; ii < p->transforms.count(); ++ii) {
2549 QQuickTransform *t = p->transforms.at(ii);
2550 QQuickTransformPrivate *tp = QQuickTransformPrivate::get(t);
2551 tp->items.removeOne(that);
2554 p->transforms.clear();
2556 p->dirty(QQuickItemPrivate::Transform);
2560 \property QQuickItem::childrenRect
2561 \brief The geometry of an item's children.
2563 This property holds the (collective) position and size of the item's children.
2567 \qmlproperty real QtQuick2::Item::x
2568 \qmlproperty real QtQuick2::Item::y
2569 \qmlproperty real QtQuick2::Item::width
2570 \qmlproperty real QtQuick2::Item::height
2572 Defines the item's position and size relative to its parent.
2575 Item { x: 100; y: 100; width: 100; height: 100 }
2580 \qmlproperty real QtQuick2::Item::z
2582 Sets the stacking order of sibling items. By default the stacking order is 0.
2584 Items with a higher stacking value are drawn on top of siblings with a
2585 lower stacking order. Items with the same stacking value are drawn
2586 bottom up in the order they appear. Items with a negative stacking
2587 value are drawn under their parent's content.
2589 The following example shows the various effects of stacking order.
2593 \o \image declarative-item_stacking1.png
2594 \o Same \c z - later children above earlier children:
2599 width: 100; height: 100
2603 x: 50; y: 50; width: 100; height: 100
2608 \o \image declarative-item_stacking2.png
2609 \o Higher \c z on top:
2615 width: 100; height: 100
2619 x: 50; y: 50; width: 100; height: 100
2624 \o \image declarative-item_stacking3.png
2625 \o Same \c z - children above parents:
2630 width: 100; height: 100
2633 x: 50; y: 50; width: 100; height: 100
2639 \o \image declarative-item_stacking4.png
2640 \o Lower \c z below:
2645 width: 100; height: 100
2649 x: 50; y: 50; width: 100; height: 100
2658 \qmlproperty bool QtQuick2::Item::visible
2660 This property holds whether the item is visible. By default this is true.
2662 Setting this property directly affects the \c visible value of child
2663 items. When set to \c false, the \c visible values of all child items also
2664 become \c false. When set to \c true, the \c visible values of child items
2665 are returned to \c true, unless they have explicitly been set to \c false.
2667 (Because of this flow-on behavior, using the \c visible property may not
2668 have the intended effect if a property binding should only respond to
2669 explicit property changes. In such cases it may be better to use the
2670 \l opacity property instead.)
2672 Setting this property to \c false automatically causes \l focus to be set
2673 to \c false, and this item will longer receive mouse and keyboard events.
2674 (In contrast, setting the \l opacity to 0 does not affect the \l focus
2675 property and the receiving of key events.)
2677 \note This property's value is only affected by changes to this property or
2678 the parent's \c visible property. It does not change, for example, if this
2679 item moves off-screen, or if the \l opacity changes to 0.
2684 \qmlproperty AnchorLine QtQuick2::Item::anchors.top
2685 \qmlproperty AnchorLine QtQuick2::Item::anchors.bottom
2686 \qmlproperty AnchorLine QtQuick2::Item::anchors.left
2687 \qmlproperty AnchorLine QtQuick2::Item::anchors.right
2688 \qmlproperty AnchorLine QtQuick2::Item::anchors.horizontalCenter
2689 \qmlproperty AnchorLine QtQuick2::Item::anchors.verticalCenter
2690 \qmlproperty AnchorLine QtQuick2::Item::anchors.baseline
2692 \qmlproperty Item QtQuick2::Item::anchors.fill
2693 \qmlproperty Item QtQuick2::Item::anchors.centerIn
2695 \qmlproperty real QtQuick2::Item::anchors.margins
2696 \qmlproperty real QtQuick2::Item::anchors.topMargin
2697 \qmlproperty real QtQuick2::Item::anchors.bottomMargin
2698 \qmlproperty real QtQuick2::Item::anchors.leftMargin
2699 \qmlproperty real QtQuick2::Item::anchors.rightMargin
2700 \qmlproperty real QtQuick2::Item::anchors.horizontalCenterOffset
2701 \qmlproperty real QtQuick2::Item::anchors.verticalCenterOffset
2702 \qmlproperty real QtQuick2::Item::anchors.baselineOffset
2704 \qmlproperty bool QtQuick2::Item::anchors.mirrored
2706 Anchors provide a way to position an item by specifying its
2707 relationship with other items.
2709 Margins apply to top, bottom, left, right, and fill anchors.
2710 The \c anchors.margins property can be used to set all of the various margins at once, to the same value.
2711 Note that margins are anchor-specific and are not applied if an item does not
2714 Offsets apply for horizontal center, vertical center, and baseline anchors.
2718 \o \image declarative-anchors_example.png
2719 \o Text anchored to Image, horizontally centered and vertically below, with a margin.
2728 anchors.horizontalCenter: pic.horizontalCenter
2729 anchors.top: pic.bottom
2730 anchors.topMargin: 5
2736 \o \image declarative-anchors_example2.png
2738 Left of Text anchored to right of Image, with a margin. The y
2739 property of both defaults to 0.
2749 anchors.left: pic.right
2750 anchors.leftMargin: 5
2757 \c anchors.fill provides a convenient way for one item to have the
2758 same geometry as another item, and is equivalent to connecting all
2759 four directional anchors.
2761 To clear an anchor value, set it to \c undefined.
2763 \c anchors.mirrored returns true it the layout has been \l {LayoutMirroring}{mirrored}.
2765 \note You can only anchor an item to siblings or a parent.
2767 For more information see \l {anchor-layout}{Anchor Layouts}.
2771 \property QQuickItem::baselineOffset
2772 \brief The position of the item's baseline in local coordinates.
2774 The baseline of a \l Text item is the imaginary line on which the text
2775 sits. Controls containing text usually set their baseline to the
2776 baseline of their text.
2778 For non-text items, a default baseline offset of 0 is used.
2780 QQuickAnchors *QQuickItemPrivate::anchors() const
2783 Q_Q(const QQuickItem);
2784 _anchors = new QQuickAnchors(const_cast<QQuickItem *>(q));
2785 if (!componentComplete)
2786 _anchors->classBegin();
2791 QQuickItemPrivate::AnchorLines *QQuickItemPrivate::anchorLines() const
2793 Q_Q(const QQuickItem);
2794 if (!_anchorLines) _anchorLines =
2795 new AnchorLines(const_cast<QQuickItem *>(q));
2796 return _anchorLines;
2799 void QQuickItemPrivate::siblingOrderChanged()
2802 for (int ii = 0; ii < changeListeners.count(); ++ii) {
2803 const QQuickItemPrivate::ChangeListener &change = changeListeners.at(ii);
2804 if (change.types & QQuickItemPrivate::SiblingOrder) {
2805 change.listener->itemSiblingOrderChanged(q);
2810 QDeclarativeListProperty<QObject> QQuickItemPrivate::data()
2812 return QDeclarativeListProperty<QObject>(q_func(), 0, QQuickItemPrivate::data_append,
2813 QQuickItemPrivate::data_count,
2814 QQuickItemPrivate::data_at,
2815 QQuickItemPrivate::data_clear);
2818 QRectF QQuickItem::childrenRect()
2821 if (!d->_contents) {
2822 d->_contents = new QQuickContents(this);
2823 if (d->componentComplete)
2824 d->_contents->complete();
2826 return d->_contents->rectF();
2829 QList<QQuickItem *> QQuickItem::childItems() const
2831 Q_D(const QQuickItem);
2832 return d->childItems;
2835 bool QQuickItem::clip() const
2837 return flags() & ItemClipsChildrenToShape;
2840 void QQuickItem::setClip(bool c)
2845 setFlag(ItemClipsChildrenToShape, c);
2847 emit clipChanged(c);
2852 This function is called to handle this item's changes in
2853 geometry from \a oldGeometry to \a newGeometry. If the two
2854 geometries are the same, it doesn't do anything.
2856 void QQuickItem::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry)
2861 QQuickAnchorsPrivate::get(d->_anchors)->updateMe();
2863 bool xChange = (newGeometry.x() != oldGeometry.x());
2864 bool yChange = (newGeometry.y() != oldGeometry.y());
2865 bool widthChange = (newGeometry.width() != oldGeometry.width());
2866 bool heightChange = (newGeometry.height() != oldGeometry.height());
2868 for (int ii = 0; ii < d->changeListeners.count(); ++ii) {
2869 const QQuickItemPrivate::ChangeListener &change = d->changeListeners.at(ii);
2870 if (change.types & QQuickItemPrivate::Geometry) {
2871 if (change.gTypes == QQuickItemPrivate::GeometryChange) {
2872 change.listener->itemGeometryChanged(this, newGeometry, oldGeometry);
2873 } else if ((xChange && (change.gTypes & QQuickItemPrivate::XChange)) ||
2874 (yChange && (change.gTypes & QQuickItemPrivate::YChange)) ||
2875 (widthChange && (change.gTypes & QQuickItemPrivate::WidthChange)) ||
2876 (heightChange && (change.gTypes & QQuickItemPrivate::HeightChange))) {
2877 change.listener->itemGeometryChanged(this, newGeometry, oldGeometry);
2887 emit widthChanged();
2889 emit heightChanged();
2893 Called by the rendering thread when it is time to sync the state of the QML objects with the
2894 scene graph objects. The function should return the root of the scene graph subtree for
2895 this item. \a oldNode is the node that was returned the last time the function was called.
2897 The main thread is blocked while this function is executed so it is safe to read
2898 values from the QQuickItem instance and other objects in the main thread.
2900 \warning This is the only function in which it is allowed to make use of scene graph
2901 objects from the main thread. Use of scene graph objects outside this function will
2902 result in race conditions and potential crashes.
2905 QSGNode *QQuickItem::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *)
2911 QSGTransformNode *QQuickItemPrivate::createTransformNode()
2913 return new QSGTransformNode;
2916 void QQuickItem::updatePolish()
2920 void QQuickItem::sendAccessibilityUpdate()
2924 void QQuickItemPrivate::removeItemChangeListener(QQuickItemChangeListener *listener, ChangeTypes types)
2926 ChangeListener change(listener, types);
2927 changeListeners.removeOne(change);
2930 void QQuickItemPrivate::updateOrAddGeometryChangeListener(QQuickItemChangeListener *listener, GeometryChangeTypes types)
2932 ChangeListener change(listener, types);
2933 int index = changeListeners.find(change);
2935 changeListeners[index].gTypes = change.gTypes; //we may have different GeometryChangeTypes
2937 changeListeners.append(change);
2940 void QQuickItemPrivate::updateOrRemoveGeometryChangeListener(QQuickItemChangeListener *listener, GeometryChangeTypes types)
2942 ChangeListener change(listener, types);
2943 if (types == NoChange) {
2944 changeListeners.removeOne(change);
2946 int index = changeListeners.find(change);
2948 changeListeners[index].gTypes = change.gTypes; //we may have different GeometryChangeTypes
2952 void QQuickItem::keyPressEvent(QKeyEvent *event)
2957 void QQuickItem::keyReleaseEvent(QKeyEvent *event)
2962 void QQuickItem::inputMethodEvent(QInputMethodEvent *event)
2967 void QQuickItem::focusInEvent(QFocusEvent *)
2969 QAccessible::updateAccessibility(this, 0, QAccessible::Focus);
2972 void QQuickItem::focusOutEvent(QFocusEvent *)
2976 void QQuickItem::mousePressEvent(QMouseEvent *event)
2981 void QQuickItem::mouseMoveEvent(QMouseEvent *event)
2986 void QQuickItem::mouseReleaseEvent(QMouseEvent *event)
2991 void QQuickItem::mouseDoubleClickEvent(QMouseEvent *event)
2993 mousePressEvent(event);
2996 void QQuickItem::mouseUngrabEvent()
3001 void QQuickItem::touchUngrabEvent()
3006 void QQuickItem::wheelEvent(QWheelEvent *event)
3011 void QQuickItem::touchEvent(QTouchEvent *event)
3016 void QQuickItem::hoverEnterEvent(QHoverEvent *event)
3021 void QQuickItem::hoverMoveEvent(QHoverEvent *event)
3026 void QQuickItem::hoverLeaveEvent(QHoverEvent *event)
3031 void QQuickItem::dragEnterEvent(QDragEnterEvent *event)
3036 void QQuickItem::dragMoveEvent(QDragMoveEvent *event)
3042 void QQuickItem::dragLeaveEvent(QDragLeaveEvent *event)
3048 void QQuickItem::dropEvent(QDropEvent *event)
3053 bool QQuickItem::childMouseEventFilter(QQuickItem *, QEvent *)
3058 void QQuickItem::windowDeactivateEvent()
3060 foreach (QQuickItem* item, childItems()) {
3061 item->windowDeactivateEvent();
3065 Qt::InputMethodHints QQuickItem::inputMethodHints() const
3067 Q_D(const QQuickItem);
3071 void QQuickItem::setInputMethodHints(Qt::InputMethodHints hints)
3076 if (!d->canvas || d->canvas->activeFocusItem() != this)
3079 QInputPanel *p = qApp->inputPanel();
3080 if (p->inputItem() == this)
3081 qApp->inputPanel()->update(Qt::ImHints);
3084 QVariant QQuickItem::inputMethodQuery(Qt::InputMethodQuery query) const
3086 Q_D(const QQuickItem);
3091 v = (bool)(flags() & ItemAcceptsInputMethod);
3094 v = (int)inputMethodHints();
3096 case Qt::ImCursorRectangle:
3098 case Qt::ImCursorPosition:
3099 case Qt::ImSurroundingText:
3100 case Qt::ImCurrentSelection:
3101 case Qt::ImMaximumTextLength:
3102 case Qt::ImAnchorPosition:
3103 case Qt::ImPreferredLanguage:
3105 v = d->keyHandler->inputMethodQuery(query);
3113 QQuickAnchorLine QQuickItemPrivate::left() const
3115 return anchorLines()->left;
3118 QQuickAnchorLine QQuickItemPrivate::right() const
3120 return anchorLines()->right;
3123 QQuickAnchorLine QQuickItemPrivate::horizontalCenter() const
3125 return anchorLines()->hCenter;
3128 QQuickAnchorLine QQuickItemPrivate::top() const
3130 return anchorLines()->top;
3133 QQuickAnchorLine QQuickItemPrivate::bottom() const
3135 return anchorLines()->bottom;
3138 QQuickAnchorLine QQuickItemPrivate::verticalCenter() const
3140 return anchorLines()->vCenter;
3143 QQuickAnchorLine QQuickItemPrivate::baseline() const
3145 return anchorLines()->baseline;
3148 qreal QQuickItem::baselineOffset() const
3150 Q_D(const QQuickItem);
3151 if (!d->baselineOffset.isValid()) {
3154 return d->baselineOffset;
3157 void QQuickItem::setBaselineOffset(qreal offset)
3160 if (offset == d->baselineOffset)
3163 d->baselineOffset = offset;
3165 for (int ii = 0; ii < d->changeListeners.count(); ++ii) {
3166 const QQuickItemPrivate::ChangeListener &change = d->changeListeners.at(ii);
3167 if (change.types & QQuickItemPrivate::Geometry) {
3168 QQuickAnchorsPrivate *anchor = change.listener->anchorPrivate();
3170 anchor->updateVerticalAnchors();
3173 emit baselineOffsetChanged(offset);
3176 void QQuickItem::update()
3179 Q_ASSERT(flags() & ItemHasContents);
3180 d->dirty(QQuickItemPrivate::Content);
3183 void QQuickItem::polish()
3186 if (!d->polishScheduled) {
3187 d->polishScheduled = true;
3189 QQuickCanvasPrivate *p = QQuickCanvasPrivate::get(d->canvas);
3190 bool maybeupdate = p->itemsToPolish.isEmpty();
3191 p->itemsToPolish.insert(this);
3192 if (maybeupdate) d->canvas->maybeUpdate();
3197 void QQuickItem::mapFromItem(QDeclarativeV8Function *args) const
3199 if (args->Length() != 0) {
3200 v8::Local<v8::Value> item = (*args)[0];
3201 QV8Engine *engine = args->engine();
3203 QQuickItem *itemObj = 0;
3204 if (!item->IsNull())
3205 itemObj = qobject_cast<QQuickItem*>(engine->toQObject(item));
3207 if (!itemObj && !item->IsNull()) {
3208 qmlInfo(this) << "mapFromItem() given argument \"" << engine->toString(item->ToString())
3209 << "\" which is neither null nor an Item";
3213 v8::Local<v8::Object> rv = v8::Object::New();
3214 args->returnValue(rv);
3216 qreal x = (args->Length() > 1)?(*args)[1]->NumberValue():0;
3217 qreal y = (args->Length() > 2)?(*args)[2]->NumberValue():0;
3219 QPointF p = mapFromItem(itemObj, QPointF(x, y));
3221 rv->Set(v8::String::New("x"), v8::Number::New(p.x()));
3222 rv->Set(v8::String::New("y"), v8::Number::New(p.y()));
3226 QTransform QQuickItem::itemTransform(QQuickItem *other, bool *ok) const
3228 Q_D(const QQuickItem);
3230 // XXX todo - we need to be able to handle common parents better and detect
3234 QTransform t = d->itemToCanvasTransform();
3235 if (other) t *= QQuickItemPrivate::get(other)->canvasToItemTransform();
3240 void QQuickItem::mapToItem(QDeclarativeV8Function *args) const
3242 if (args->Length() != 0) {
3243 v8::Local<v8::Value> item = (*args)[0];
3244 QV8Engine *engine = args->engine();
3246 QQuickItem *itemObj = 0;
3247 if (!item->IsNull())
3248 itemObj = qobject_cast<QQuickItem*>(engine->toQObject(item));
3250 if (!itemObj && !item->IsNull()) {
3251 qmlInfo(this) << "mapToItem() given argument \"" << engine->toString(item->ToString())
3252 << "\" which is neither null nor an Item";
3256 v8::Local<v8::Object> rv = v8::Object::New();
3257 args->returnValue(rv);
3259 qreal x = (args->Length() > 1)?(*args)[1]->NumberValue():0;
3260 qreal y = (args->Length() > 2)?(*args)[2]->NumberValue():0;
3262 QPointF p = mapToItem(itemObj, QPointF(x, y));
3264 rv->Set(v8::String::New("x"), v8::Number::New(p.x()));
3265 rv->Set(v8::String::New("y"), v8::Number::New(p.y()));
3269 void QQuickItem::forceActiveFocus()
3272 QQuickItem *parent = parentItem();
3274 if (parent->flags() & QQuickItem::ItemIsFocusScope) {
3275 parent->setFocus(true);
3277 parent = parent->parentItem();
3281 QQuickItem *QQuickItem::childAt(qreal x, qreal y) const
3283 // XXX todo - should this include transform etc.?
3284 const QList<QQuickItem *> children = childItems();
3285 for (int i = children.count()-1; i >= 0; --i) {
3286 QQuickItem *child = children.at(i);
3287 if (child->isVisible() && child->x() <= x
3288 && child->x() + child->width() >= x
3290 && child->y() + child->height() >= y)
3296 QDeclarativeListProperty<QObject> QQuickItemPrivate::resources()
3298 return QDeclarativeListProperty<QObject>(q_func(), 0, QQuickItemPrivate::resources_append,
3299 QQuickItemPrivate::resources_count,
3300 QQuickItemPrivate::resources_at,
3301 QQuickItemPrivate::resources_clear);
3304 QDeclarativeListProperty<QQuickItem> QQuickItemPrivate::children()
3306 return QDeclarativeListProperty<QQuickItem>(q_func(), 0, QQuickItemPrivate::children_append,
3307 QQuickItemPrivate::children_count,
3308 QQuickItemPrivate::children_at,
3309 QQuickItemPrivate::children_clear);
3313 QDeclarativeListProperty<QDeclarativeState> QQuickItemPrivate::states()
3315 return _states()->statesProperty();
3318 QDeclarativeListProperty<QDeclarativeTransition> QQuickItemPrivate::transitions()
3320 return _states()->transitionsProperty();
3323 QString QQuickItemPrivate::state() const
3328 return _stateGroup->state();
3331 void QQuickItemPrivate::setState(const QString &state)
3333 _states()->setState(state);
3336 QString QQuickItem::state() const
3338 Q_D(const QQuickItem);
3342 void QQuickItem::setState(const QString &state)
3348 QDeclarativeListProperty<QQuickTransform> QQuickItem::transform()
3350 return QDeclarativeListProperty<QQuickTransform>(this, 0, QQuickItemPrivate::transform_append,
3351 QQuickItemPrivate::transform_count,
3352 QQuickItemPrivate::transform_at,
3353 QQuickItemPrivate::transform_clear);
3356 void QQuickItem::classBegin()
3359 d->componentComplete = false;
3361 d->_stateGroup->classBegin();
3363 d->_anchors->classBegin();
3365 d->_layer->classBegin();
3368 void QQuickItem::componentComplete()
3371 d->componentComplete = true;
3373 d->_stateGroup->componentComplete();
3375 d->_anchors->componentComplete();
3376 QQuickAnchorsPrivate::get(d->_anchors)->updateOnComplete();
3380 d->_layer->componentComplete();
3383 d->keyHandler->componentComplete();
3385 d->_contents->complete();
3388 QDeclarativeStateGroup *QQuickItemPrivate::_states()
3392 _stateGroup = new QDeclarativeStateGroup;
3393 if (!componentComplete)
3394 _stateGroup->classBegin();
3395 FAST_CONNECT(_stateGroup, SIGNAL(stateChanged(QString)),
3396 q, SIGNAL(stateChanged(QString)))
3402 QQuickItemPrivate::AnchorLines::AnchorLines(QQuickItem *q)
3405 left.anchorLine = QQuickAnchorLine::Left;
3407 right.anchorLine = QQuickAnchorLine::Right;
3409 hCenter.anchorLine = QQuickAnchorLine::HCenter;
3411 top.anchorLine = QQuickAnchorLine::Top;
3413 bottom.anchorLine = QQuickAnchorLine::Bottom;
3415 vCenter.anchorLine = QQuickAnchorLine::VCenter;
3417 baseline.anchorLine = QQuickAnchorLine::Baseline;
3420 QPointF QQuickItemPrivate::computeTransformOrigin() const
3424 case QQuickItem::TopLeft:
3425 return QPointF(0, 0);
3426 case QQuickItem::Top:
3427 return QPointF(width / 2., 0);
3428 case QQuickItem::TopRight:
3429 return QPointF(width, 0);
3430 case QQuickItem::Left:
3431 return QPointF(0, height / 2.);
3432 case QQuickItem::Center:
3433 return QPointF(width / 2., height / 2.);
3434 case QQuickItem::Right:
3435 return QPointF(width, height / 2.);
3436 case QQuickItem::BottomLeft:
3437 return QPointF(0, height);
3438 case QQuickItem::Bottom:
3439 return QPointF(width / 2., height);
3440 case QQuickItem::BottomRight:
3441 return QPointF(width, height);
3445 void QQuickItemPrivate::transformChanged()
3448 _layer->updateMatrix();
3451 void QQuickItemPrivate::deliverKeyEvent(QKeyEvent *e)
3455 Q_ASSERT(e->isAccepted());
3457 if (e->type() == QEvent::KeyPress)
3458 keyHandler->keyPressed(e, false);
3460 keyHandler->keyReleased(e, false);
3462 if (e->isAccepted())
3468 if (e->type() == QEvent::KeyPress)
3469 q->keyPressEvent(e);
3471 q->keyReleaseEvent(e);
3473 if (e->isAccepted())
3479 if (e->type() == QEvent::KeyPress)
3480 keyHandler->keyPressed(e, true);
3482 keyHandler->keyReleased(e, true);
3486 void QQuickItemPrivate::deliverInputMethodEvent(QInputMethodEvent *e)
3490 Q_ASSERT(e->isAccepted());
3492 keyHandler->inputMethodEvent(e, false);
3494 if (e->isAccepted())
3500 q->inputMethodEvent(e);
3502 if (e->isAccepted())
3508 keyHandler->inputMethodEvent(e, true);
3512 void QQuickItemPrivate::deliverFocusEvent(QFocusEvent *e)
3516 if (e->type() == QEvent::FocusIn) {
3519 q->focusOutEvent(e);
3523 void QQuickItemPrivate::deliverMouseEvent(QMouseEvent *e)
3527 Q_ASSERT(e->isAccepted());
3529 switch (e->type()) {
3531 Q_ASSERT(!"Unknown event type");
3532 case QEvent::MouseMove:
3533 q->mouseMoveEvent(e);
3535 case QEvent::MouseButtonPress:
3536 q->mousePressEvent(e);
3538 case QEvent::MouseButtonRelease:
3539 q->mouseReleaseEvent(e);
3541 case QEvent::MouseButtonDblClick:
3542 q->mouseDoubleClickEvent(e);
3547 void QQuickItemPrivate::deliverWheelEvent(QWheelEvent *e)
3553 void QQuickItemPrivate::deliverTouchEvent(QTouchEvent *e)
3559 void QQuickItemPrivate::deliverHoverEvent(QHoverEvent *e)
3562 switch (e->type()) {
3564 Q_ASSERT(!"Unknown event type");
3565 case QEvent::HoverEnter:
3566 q->hoverEnterEvent(e);
3568 case QEvent::HoverLeave:
3569 q->hoverLeaveEvent(e);
3571 case QEvent::HoverMove:
3572 q->hoverMoveEvent(e);
3577 void QQuickItemPrivate::deliverDragEvent(QEvent *e)
3580 switch (e->type()) {
3582 Q_ASSERT(!"Unknown event type");
3583 case QEvent::DragEnter:
3584 q->dragEnterEvent(static_cast<QDragEnterEvent *>(e));
3586 case QEvent::DragLeave:
3587 q->dragLeaveEvent(static_cast<QDragLeaveEvent *>(e));
3589 case QEvent::DragMove:
3590 q->dragMoveEvent(static_cast<QDragMoveEvent *>(e));
3593 q->dropEvent(static_cast<QDropEvent *>(e));
3598 void QQuickItem::itemChange(ItemChange change, const ItemChangeData &value)
3605 Notify input method on updated query values if needed. \a indicates changed attributes.
3607 void QQuickItem::updateInputMethod(Qt::InputMethodQueries queries)
3609 if (hasActiveFocus())
3610 qApp->inputPanel()->update(queries);
3614 // XXX todo - do we want/need this anymore?
3615 // Note that it's now used for varying clip rect
3616 QRectF QQuickItem::boundingRect() const
3618 Q_D(const QQuickItem);
3619 return QRectF(0, 0, d->width, d->height);
3622 QQuickItem::TransformOrigin QQuickItem::transformOrigin() const
3624 Q_D(const QQuickItem);
3628 void QQuickItem::setTransformOrigin(TransformOrigin origin)
3631 if (origin == d->origin)
3635 d->dirty(QQuickItemPrivate::TransformOrigin);
3637 emit transformOriginChanged(d->origin);
3640 QPointF QQuickItem::transformOriginPoint() const
3642 Q_D(const QQuickItem);
3643 if (!d->transformOriginPoint.isNull())
3644 return d->transformOriginPoint;
3645 return d->computeTransformOrigin();
3648 void QQuickItem::setTransformOriginPoint(const QPointF &point)
3651 if (d->transformOriginPoint == point)
3654 d->transformOriginPoint = point;
3655 d->dirty(QQuickItemPrivate::TransformOrigin);
3658 qreal QQuickItem::z() const
3660 Q_D(const QQuickItem);
3664 void QQuickItem::setZ(qreal v)
3672 d->dirty(QQuickItemPrivate::ZValue);
3673 if (d->parentItem) {
3674 QQuickItemPrivate::get(d->parentItem)->dirty(QQuickItemPrivate::ChildrenStackingChanged);
3675 QQuickItemPrivate::get(d->parentItem)->markSortedChildrenDirty(this);
3681 d->_layer->updateZ();
3686 \qmlproperty real QtQuick2::Item::rotation
3687 This property holds the rotation of the item in degrees clockwise.
3689 This specifies how many degrees to rotate the item around its transformOrigin.
3690 The default rotation is 0 degrees (i.e. not rotated at all).
3694 \o \image declarative-rotation.png
3699 width: 100; height: 100
3702 x: 25; y: 25; width: 50; height: 50
3709 \sa transform, Rotation
3713 \qmlproperty real QtQuick2::Item::scale
3714 This property holds the scale of the item.
3716 A scale of less than 1 means the item will be displayed smaller than
3717 normal, and a scale of greater than 1 means the item will be
3718 displayed larger than normal. A negative scale means the item will
3721 By default, items are displayed at a scale of 1 (i.e. at their
3724 Scaling is from the item's transformOrigin.
3728 \o \image declarative-scale.png
3733 width: 100; height: 100
3736 width: 25; height: 25
3740 x: 25; y: 25; width: 50; height: 50
3747 \sa transform, Scale
3751 \qmlproperty real QtQuick2::Item::opacity
3753 This property holds the opacity of the item. Opacity is specified as a
3754 number between 0 (fully transparent) and 1 (fully opaque). The default is 1.
3756 When this property is set, the specified opacity is also applied
3757 individually to child items. In almost all cases this is what you want,
3758 but in some cases it may produce undesired results. For example in the
3759 second set of rectangles below, the red rectangle has specified an opacity
3760 of 0.5, which affects the opacity of its blue child rectangle even though
3761 the child has not specified an opacity.
3765 \o \image declarative-item_opacity1.png
3771 width: 100; height: 100
3774 x: 50; y: 50; width: 100; height: 100
3780 \o \image declarative-item_opacity2.png
3787 width: 100; height: 100
3790 x: 50; y: 50; width: 100; height: 100
3797 If an item's opacity is set to 0, the item will no longer receive mouse
3798 events, but will continue to receive key events and will retain the keyboard
3799 \l focus if it has been set. (In contrast, setting the \l visible property
3800 to \c false stops both mouse and keyboard events, and also removes focus
3805 Returns a value indicating whether mouse input should
3806 remain with this item exclusively.
3808 \sa setKeepMouseGrab()
3811 qreal QQuickItem::rotation() const
3813 Q_D(const QQuickItem);
3817 void QQuickItem::setRotation(qreal r)
3820 if (d->rotation == r)
3825 d->dirty(QQuickItemPrivate::BasicTransform);
3827 d->itemChange(ItemRotationHasChanged, r);
3829 emit rotationChanged();
3832 qreal QQuickItem::scale() const
3834 Q_D(const QQuickItem);
3838 void QQuickItem::setScale(qreal s)
3846 d->dirty(QQuickItemPrivate::BasicTransform);
3848 emit scaleChanged();
3851 qreal QQuickItem::opacity() const
3853 Q_D(const QQuickItem);
3857 void QQuickItem::setOpacity(qreal o)
3860 if (d->opacity == o)
3865 d->dirty(QQuickItemPrivate::OpacityValue);
3867 d->itemChange(ItemOpacityHasChanged, o);
3869 emit opacityChanged();
3872 bool QQuickItem::isVisible() const
3874 Q_D(const QQuickItem);
3875 return d->effectiveVisible;
3878 void QQuickItem::setVisible(bool v)
3881 if (v == d->explicitVisible)
3884 d->explicitVisible = v;
3886 d->setEffectiveVisibleRecur(d->calcEffectiveVisible());
3889 bool QQuickItem::isEnabled() const
3891 Q_D(const QQuickItem);
3892 return d->effectiveEnable;
3895 void QQuickItem::setEnabled(bool e)
3898 if (e == d->explicitEnable)
3901 d->explicitEnable = e;
3903 d->setEffectiveEnableRecur(d->calcEffectiveEnable());
3906 bool QQuickItemPrivate::calcEffectiveVisible() const
3908 // XXX todo - Should the effective visible of an element with no parent just be the current
3909 // effective visible? This would prevent pointless re-processing in the case of an element
3910 // moving to/from a no-parent situation, but it is different from what graphics view does.
3911 return explicitVisible && (!parentItem || QQuickItemPrivate::get(parentItem)->effectiveVisible);
3914 void QQuickItemPrivate::setEffectiveVisibleRecur(bool newEffectiveVisible)
3918 if (newEffectiveVisible && !explicitVisible) {
3919 // This item locally overrides visibility
3923 if (newEffectiveVisible == effectiveVisible) {
3924 // No change necessary
3928 effectiveVisible = newEffectiveVisible;
3930 if (parentItem) QQuickItemPrivate::get(parentItem)->dirty(ChildrenStackingChanged);
3933 QQuickCanvasPrivate *canvasPriv = QQuickCanvasPrivate::get(canvas);
3934 if (canvasPriv->mouseGrabberItem == q)
3938 for (int ii = 0; ii < childItems.count(); ++ii)
3939 QQuickItemPrivate::get(childItems.at(ii))->setEffectiveVisibleRecur(newEffectiveVisible);
3941 for (int ii = 0; ii < changeListeners.count(); ++ii) {
3942 const QQuickItemPrivate::ChangeListener &change = changeListeners.at(ii);
3943 if (change.types & QQuickItemPrivate::Visibility)
3944 change.listener->itemVisibilityChanged(q);
3948 QAccessible::updateAccessibility(q, 0, effectiveVisible ? QAccessible::ObjectShow : QAccessible::ObjectHide );
3950 emit q->visibleChanged();
3953 bool QQuickItemPrivate::calcEffectiveEnable() const
3955 // XXX todo - Should the effective enable of an element with no parent just be the current
3956 // effective enable? This would prevent pointless re-processing in the case of an element
3957 // moving to/from a no-parent situation, but it is different from what graphics view does.
3958 return explicitEnable && (!parentItem || QQuickItemPrivate::get(parentItem)->effectiveEnable);
3961 void QQuickItemPrivate::setEffectiveEnableRecur(bool newEffectiveEnable)
3965 // XXX todo - need to fixup focus
3967 if (newEffectiveEnable && !explicitEnable) {
3968 // This item locally overrides enable
3972 if (newEffectiveEnable == effectiveEnable) {
3973 // No change necessary
3977 effectiveEnable = newEffectiveEnable;
3980 QQuickCanvasPrivate *canvasPriv = QQuickCanvasPrivate::get(canvas);
3981 if (canvasPriv->mouseGrabberItem == q)
3985 for (int ii = 0; ii < childItems.count(); ++ii)
3986 QQuickItemPrivate::get(childItems.at(ii))->setEffectiveEnableRecur(newEffectiveEnable);
3988 emit q->enabledChanged();
3991 QString QQuickItemPrivate::dirtyToString() const
3993 #define DIRTY_TO_STRING(value) if (dirtyAttributes & value) { \
3994 if (!rv.isEmpty()) \
3995 rv.append(QLatin1String("|")); \
3996 rv.append(QLatin1String(#value)); \
3999 // QString rv = QLatin1String("0x") + QString::number(dirtyAttributes, 16);
4002 DIRTY_TO_STRING(TransformOrigin);
4003 DIRTY_TO_STRING(Transform);
4004 DIRTY_TO_STRING(BasicTransform);
4005 DIRTY_TO_STRING(Position);
4006 DIRTY_TO_STRING(Size);
4007 DIRTY_TO_STRING(ZValue);
4008 DIRTY_TO_STRING(Content);
4009 DIRTY_TO_STRING(Smooth);
4010 DIRTY_TO_STRING(OpacityValue);
4011 DIRTY_TO_STRING(ChildrenChanged);
4012 DIRTY_TO_STRING(ChildrenStackingChanged);
4013 DIRTY_TO_STRING(ParentChanged);
4014 DIRTY_TO_STRING(Clip);
4015 DIRTY_TO_STRING(Canvas);
4016 DIRTY_TO_STRING(EffectReference);
4017 DIRTY_TO_STRING(Visible);
4018 DIRTY_TO_STRING(HideReference);
4019 DIRTY_TO_STRING(PerformanceHints);
4024 void QQuickItemPrivate::dirty(DirtyType type)
4027 if (type & (TransformOrigin | Transform | BasicTransform | Position | Size))
4030 if (!(dirtyAttributes & type) || (canvas && !prevDirtyItem)) {
4031 dirtyAttributes |= type;
4034 QQuickCanvasPrivate::get(canvas)->dirtyItem(q);
4039 void QQuickItemPrivate::addToDirtyList()
4044 if (!prevDirtyItem) {
4045 Q_ASSERT(!nextDirtyItem);
4047 QQuickCanvasPrivate *p = QQuickCanvasPrivate::get(canvas);
4048 nextDirtyItem = p->dirtyItemList;
4049 if (nextDirtyItem) QQuickItemPrivate::get(nextDirtyItem)->prevDirtyItem = &nextDirtyItem;
4050 prevDirtyItem = &p->dirtyItemList;
4051 p->dirtyItemList = q;
4054 Q_ASSERT(prevDirtyItem);
4057 void QQuickItemPrivate::removeFromDirtyList()
4059 if (prevDirtyItem) {
4060 if (nextDirtyItem) QQuickItemPrivate::get(nextDirtyItem)->prevDirtyItem = prevDirtyItem;
4061 *prevDirtyItem = nextDirtyItem;
4065 Q_ASSERT(!prevDirtyItem);
4066 Q_ASSERT(!nextDirtyItem);
4069 void QQuickItemPrivate::refFromEffectItem(bool hide)
4072 if (1 == effectRefCount) {
4073 dirty(EffectReference);
4074 if (parentItem) QQuickItemPrivate::get(parentItem)->dirty(ChildrenStackingChanged);
4077 if (++hideRefCount == 1)
4078 dirty(HideReference);
4082 void QQuickItemPrivate::derefFromEffectItem(bool unhide)
4084 Q_ASSERT(effectRefCount);
4086 if (0 == effectRefCount) {
4087 dirty(EffectReference);
4088 if (parentItem) QQuickItemPrivate::get(parentItem)->dirty(ChildrenStackingChanged);
4091 if (--hideRefCount == 0)
4092 dirty(HideReference);
4096 void QQuickItemPrivate::itemChange(QQuickItem::ItemChange change, const QQuickItem::ItemChangeData &data)
4100 case QQuickItem::ItemChildAddedChange:
4101 q->itemChange(change, data);
4102 for (int ii = 0; ii < changeListeners.count(); ++ii) {
4103 const QQuickItemPrivate::ChangeListener &change = changeListeners.at(ii);
4104 if (change.types & QQuickItemPrivate::Children) {
4105 change.listener->itemChildAdded(q, data.item);
4109 case QQuickItem::ItemChildRemovedChange:
4110 q->itemChange(change, data);
4111 for (int ii = 0; ii < changeListeners.count(); ++ii) {
4112 const QQuickItemPrivate::ChangeListener &change = changeListeners.at(ii);
4113 if (change.types & QQuickItemPrivate::Children) {
4114 change.listener->itemChildRemoved(q, data.item);
4118 case QQuickItem::ItemSceneChange:
4119 q->itemChange(change, data);
4121 case QQuickItem::ItemVisibleHasChanged:
4122 q->itemChange(change, data);
4123 for (int ii = 0; ii < changeListeners.count(); ++ii) {
4124 const QQuickItemPrivate::ChangeListener &change = changeListeners.at(ii);
4125 if (change.types & QQuickItemPrivate::Visibility) {
4126 change.listener->itemVisibilityChanged(q);
4130 case QQuickItem::ItemParentHasChanged:
4131 q->itemChange(change, data);
4132 for (int ii = 0; ii < changeListeners.count(); ++ii) {
4133 const QQuickItemPrivate::ChangeListener &change = changeListeners.at(ii);
4134 if (change.types & QQuickItemPrivate::Parent) {
4135 change.listener->itemParentChanged(q, data.item);
4139 case QQuickItem::ItemOpacityHasChanged:
4140 q->itemChange(change, data);
4141 for (int ii = 0; ii < changeListeners.count(); ++ii) {
4142 const QQuickItemPrivate::ChangeListener &change = changeListeners.at(ii);
4143 if (change.types & QQuickItemPrivate::Opacity) {
4144 change.listener->itemOpacityChanged(q);
4148 case QQuickItem::ItemActiveFocusHasChanged:
4149 q->itemChange(change, data);
4151 case QQuickItem::ItemRotationHasChanged:
4152 q->itemChange(change, data);
4153 for (int ii = 0; ii < changeListeners.count(); ++ii) {
4154 const QQuickItemPrivate::ChangeListener &change = changeListeners.at(ii);
4155 if (change.types & QQuickItemPrivate::Rotation) {
4156 change.listener->itemRotationChanged(q);
4164 \property QQuickItem::smooth
4165 \brief whether the item is smoothly transformed.
4167 This property is provided purely for the purpose of optimization. Turning
4168 smooth transforms off is faster, but looks worse; turning smooth
4169 transformations on is slower, but looks better.
4171 By default smooth transformations are off.
4175 Returns true if the item should be drawn with antialiasing and
4176 smooth pixmap filtering, false otherwise.
4178 The default is false.
4182 bool QQuickItem::smooth() const
4184 Q_D(const QQuickItem);
4189 Sets whether the item should be drawn with antialiasing and
4190 smooth pixmap filtering to \a smooth.
4194 void QQuickItem::setSmooth(bool smooth)
4197 if (d->smooth == smooth)
4201 d->dirty(QQuickItemPrivate::Smooth);
4203 emit smoothChanged(smooth);
4206 QQuickItem::Flags QQuickItem::flags() const
4208 Q_D(const QQuickItem);
4209 return (QQuickItem::Flags)d->flags;
4212 void QQuickItem::setFlag(Flag flag, bool enabled)
4216 setFlags((Flags)(d->flags | (quint32)flag));
4218 setFlags((Flags)(d->flags & ~(quint32)flag));
4221 void QQuickItem::setFlags(Flags flags)
4225 if ((flags & ItemIsFocusScope) != (d->flags & ItemIsFocusScope)) {
4226 if (flags & ItemIsFocusScope && !d->childItems.isEmpty() && d->canvas) {
4227 qWarning("QQuickItem: Cannot set FocusScope once item has children and is in a canvas.");
4228 flags &= ~ItemIsFocusScope;
4229 } else if (d->flags & ItemIsFocusScope) {
4230 qWarning("QQuickItem: Cannot unset FocusScope flag.");
4231 flags |= ItemIsFocusScope;
4235 if ((flags & ItemClipsChildrenToShape ) != (d->flags & ItemClipsChildrenToShape))
4236 d->dirty(QQuickItemPrivate::Clip);
4241 qreal QQuickItem::x() const
4243 Q_D(const QQuickItem);
4247 qreal QQuickItem::y() const
4249 Q_D(const QQuickItem);
4253 QPointF QQuickItem::pos() const
4255 Q_D(const QQuickItem);
4256 return QPointF(d->x, d->y);
4259 void QQuickItem::setX(qreal v)
4268 d->dirty(QQuickItemPrivate::Position);
4270 geometryChanged(QRectF(x(), y(), width(), height()),
4271 QRectF(oldx, y(), width(), height()));
4274 void QQuickItem::setY(qreal v)
4283 d->dirty(QQuickItemPrivate::Position);
4285 geometryChanged(QRectF(x(), y(), width(), height()),
4286 QRectF(x(), oldy, width(), height()));
4289 void QQuickItem::setPos(const QPointF &pos)
4292 if (QPointF(d->x, d->y) == pos)
4301 d->dirty(QQuickItemPrivate::Position);
4303 geometryChanged(QRectF(x(), y(), width(), height()),
4304 QRectF(oldx, oldy, width(), height()));
4307 qreal QQuickItem::width() const
4309 Q_D(const QQuickItem);
4313 void QQuickItem::setWidth(qreal w)
4319 d->widthValid = true;
4323 qreal oldWidth = d->width;
4326 d->dirty(QQuickItemPrivate::Size);
4328 geometryChanged(QRectF(x(), y(), width(), height()),
4329 QRectF(x(), y(), oldWidth, height()));
4332 void QQuickItem::resetWidth()
4335 d->widthValid = false;
4336 setImplicitWidth(implicitWidth());
4339 void QQuickItemPrivate::implicitWidthChanged()
4342 emit q->implicitWidthChanged();
4345 qreal QQuickItemPrivate::getImplicitWidth() const
4347 return implicitWidth;
4350 Returns the width of the item that is implied by other properties that determine the content.
4352 qreal QQuickItem::implicitWidth() const
4354 Q_D(const QQuickItem);
4355 return d->getImplicitWidth();
4359 \qmlproperty real QtQuick2::Item::implicitWidth
4360 \qmlproperty real QtQuick2::Item::implicitHeight
4362 Defines the natural width or height of the Item if no \l width or \l height is specified.
4364 The default implicit size for most items is 0x0, however some elements have an inherent
4365 implicit size which cannot be overridden, e.g. Image, Text.
4367 Setting the implicit size is useful for defining components that have a preferred size
4368 based on their content, for example:
4375 property alias icon: image.source
4376 property alias label: text.text
4377 implicitWidth: text.implicitWidth + image.implicitWidth
4378 implicitHeight: Math.max(text.implicitHeight, image.implicitHeight)
4383 anchors.left: image.right; anchors.right: parent.right
4384 anchors.verticalCenter: parent.verticalCenter
4389 \bold Note: using implicitWidth of Text or TextEdit and setting the width explicitly
4390 incurs a performance penalty as the text must be laid out twice.
4394 Sets the implied width of the item to \a w.
4395 This is the width implied by other properties that determine the content.
4397 void QQuickItem::setImplicitWidth(qreal w)
4400 bool changed = w != d->implicitWidth;
4401 d->implicitWidth = w;
4402 if (d->width == w || widthValid()) {
4404 d->implicitWidthChanged();
4408 qreal oldWidth = d->width;
4411 d->dirty(QQuickItemPrivate::Size);
4413 geometryChanged(QRectF(x(), y(), width(), height()),
4414 QRectF(x(), y(), oldWidth, height()));
4417 d->implicitWidthChanged();
4421 Returns whether the width property has been set explicitly.
4423 bool QQuickItem::widthValid() const
4425 Q_D(const QQuickItem);
4426 return d->widthValid;
4429 qreal QQuickItem::height() const
4431 Q_D(const QQuickItem);
4435 void QQuickItem::setHeight(qreal h)
4441 d->heightValid = true;
4445 qreal oldHeight = d->height;
4448 d->dirty(QQuickItemPrivate::Size);
4450 geometryChanged(QRectF(x(), y(), width(), height()),
4451 QRectF(x(), y(), width(), oldHeight));
4454 void QQuickItem::resetHeight()
4457 d->heightValid = false;
4458 setImplicitHeight(implicitHeight());
4461 void QQuickItemPrivate::implicitHeightChanged()
4464 emit q->implicitHeightChanged();
4467 qreal QQuickItemPrivate::getImplicitHeight() const
4469 return implicitHeight;
4473 Returns the height of the item that is implied by other properties that determine the content.
4475 qreal QQuickItem::implicitHeight() const
4477 Q_D(const QQuickItem);
4478 return d->getImplicitHeight();
4483 Sets the implied height of the item to \a h.
4484 This is the height implied by other properties that determine the content.
4486 void QQuickItem::setImplicitHeight(qreal h)
4489 bool changed = h != d->implicitHeight;
4490 d->implicitHeight = h;
4491 if (d->height == h || heightValid()) {
4493 d->implicitHeightChanged();
4497 qreal oldHeight = d->height;
4500 d->dirty(QQuickItemPrivate::Size);
4502 geometryChanged(QRectF(x(), y(), width(), height()),
4503 QRectF(x(), y(), width(), oldHeight));
4506 d->implicitHeightChanged();
4509 void QQuickItem::setImplicitSize(qreal w, qreal h)
4512 bool wChanged = w != d->implicitWidth;
4513 bool hChanged = h != d->implicitHeight;
4515 d->implicitWidth = w;
4516 d->implicitHeight = h;
4520 if (d->width == w || widthValid()) {
4522 d->implicitWidthChanged();
4525 if (d->height == h || heightValid()) {
4527 d->implicitHeightChanged();
4533 qreal oldWidth = d->width;
4534 qreal oldHeight = d->height;
4540 d->dirty(QQuickItemPrivate::Size);
4542 geometryChanged(QRectF(x(), y(), width(), height()),
4543 QRectF(x(), y(), oldWidth, oldHeight));
4545 if (!wDone && wChanged)
4546 d->implicitWidthChanged();
4547 if (!hDone && hChanged)
4548 d->implicitHeightChanged();
4552 Returns whether the height property has been set explicitly.
4554 bool QQuickItem::heightValid() const
4556 Q_D(const QQuickItem);
4557 return d->heightValid;
4560 void QQuickItem::setSize(const QSizeF &size)
4563 d->heightValid = true;
4564 d->widthValid = true;
4566 if (QSizeF(d->width, d->height) == size)
4569 qreal oldHeight = d->height;
4570 qreal oldWidth = d->width;
4571 d->height = size.height();
4572 d->width = size.width();
4574 d->dirty(QQuickItemPrivate::Size);
4576 geometryChanged(QRectF(x(), y(), width(), height()),
4577 QRectF(x(), y(), oldWidth, oldHeight));
4580 bool QQuickItem::hasActiveFocus() const
4582 Q_D(const QQuickItem);
4583 return d->activeFocus;
4586 bool QQuickItem::hasFocus() const
4588 Q_D(const QQuickItem);
4592 void QQuickItem::setFocus(bool focus)
4595 if (d->focus == focus)
4599 // Need to find our nearest focus scope
4600 QQuickItem *scope = parentItem();
4601 while (scope && !scope->isFocusScope())
4602 scope = scope->parentItem();
4604 QQuickCanvasPrivate::get(d->canvas)->setFocusInScope(scope, this);
4606 QQuickCanvasPrivate::get(d->canvas)->clearFocusInScope(scope, this);
4609 emit focusChanged(focus);
4613 bool QQuickItem::isFocusScope() const
4615 return flags() & ItemIsFocusScope;
4618 QQuickItem *QQuickItem::scopedFocusItem() const
4620 Q_D(const QQuickItem);
4621 if (!isFocusScope())
4624 return d->subFocusItem;
4628 Qt::MouseButtons QQuickItem::acceptedMouseButtons() const
4630 Q_D(const QQuickItem);
4631 return d->acceptedMouseButtons;
4634 void QQuickItem::setAcceptedMouseButtons(Qt::MouseButtons buttons)
4637 d->acceptedMouseButtons = buttons;
4640 bool QQuickItem::filtersChildMouseEvents() const
4642 Q_D(const QQuickItem);
4643 return d->filtersChildMouseEvents;
4646 void QQuickItem::setFiltersChildMouseEvents(bool filter)
4649 d->filtersChildMouseEvents = filter;
4652 bool QQuickItem::isUnderMouse() const
4654 Q_D(const QQuickItem);
4658 QPoint cursorPos = QCursor::pos();
4659 if (QRectF(0, 0, width(), height()).contains(mapFromScene(cursorPos))) // ### refactor: d->canvas->mapFromGlobal(cursorPos))))
4664 bool QQuickItem::acceptHoverEvents() const
4666 Q_D(const QQuickItem);
4667 return d->hoverEnabled;
4670 void QQuickItem::setAcceptHoverEvents(bool enabled)
4673 d->hoverEnabled = enabled;
4676 void QQuickItem::grabMouse()
4681 QQuickCanvasPrivate *canvasPriv = QQuickCanvasPrivate::get(d->canvas);
4682 if (canvasPriv->mouseGrabberItem == this)
4685 QQuickItem *oldGrabber = canvasPriv->mouseGrabberItem;
4686 canvasPriv->mouseGrabberItem = this;
4688 oldGrabber->mouseUngrabEvent();
4691 void QQuickItem::ungrabMouse()
4696 QQuickCanvasPrivate *canvasPriv = QQuickCanvasPrivate::get(d->canvas);
4697 if (canvasPriv->mouseGrabberItem != this) {
4698 qWarning("QQuickItem::ungrabMouse(): Item is not the mouse grabber.");
4702 canvasPriv->mouseGrabberItem = 0;
4706 bool QQuickItem::keepMouseGrab() const
4708 Q_D(const QQuickItem);
4709 return d->keepMouse;
4713 The flag indicating whether the mouse should remain
4714 with this item is set to \a keep.
4716 This is useful for items that wish to grab and keep mouse
4717 interaction following a predefined gesture. For example,
4718 an item that is interested in horizontal mouse movement
4719 may set keepMouseGrab to true once a threshold has been
4720 exceeded. Once keepMouseGrab has been set to true, filtering
4721 items will not react to mouse events.
4723 If the item does not indicate that it wishes to retain mouse grab,
4724 a filtering item may steal the grab. For example, Flickable may attempt
4725 to steal a mouse grab if it detects that the user has begun to
4730 void QQuickItem::setKeepMouseGrab(bool keep)
4733 d->keepMouse = keep;
4737 Grabs the touch points specified by \a ids.
4739 These touch points will be owned by the item until
4740 they are released. Alternatively, the grab can be stolen
4741 by a filtering item like Flickable. Use setKeepTouchGrab()
4742 to prevent the grab from being stolen.
4744 \sa ungrabTouchPoints(), setKeepTouchGrab()
4746 void QQuickItem::grabTouchPoints(const QList<int> &ids)
4751 QQuickCanvasPrivate *canvasPriv = QQuickCanvasPrivate::get(d->canvas);
4753 QSet<QQuickItem*> ungrab;
4754 for (int i = 0; i < ids.count(); ++i) {
4755 QQuickItem *oldGrabber = canvasPriv->itemForTouchPointId.value(ids.at(i));
4756 if (oldGrabber == this)
4759 canvasPriv->itemForTouchPointId[ids.at(i)] = this;
4761 ungrab.insert(oldGrabber);
4763 foreach (QQuickItem *oldGrabber, ungrab)
4764 oldGrabber->touchUngrabEvent();
4768 Ungrabs the touch points owned by this item.
4770 \sa grabTouchPoints()
4772 void QQuickItem::ungrabTouchPoints()
4777 QQuickCanvasPrivate *canvasPriv = QQuickCanvasPrivate::get(d->canvas);
4779 QMutableHashIterator<int, QQuickItem*> i(canvasPriv->itemForTouchPointId);
4780 while (i.hasNext()) {
4782 if (i.value() == this)
4789 Returns a value indicating whether the touch points grabbed by this item
4790 should remain with this item exclusively.
4792 \sa setKeepTouchGrab(), keepMouseGrab()
4794 bool QQuickItem::keepTouchGrab() const
4796 Q_D(const QQuickItem);
4797 return d->keepTouch;
4801 The flag indicating whether the touch points grabbed
4802 by this item should remain with this item is set to \a keep.
4804 This is useful for items that wish to grab and keep specific touch
4805 points following a predefined gesture. For example,
4806 an item that is interested in horizontal touch point movement
4807 may set setKeepTouchGrab to true once a threshold has been
4808 exceeded. Once setKeepTouchGrab has been set to true, filtering
4809 items will not react to the relevant touch points.
4811 If the item does not indicate that it wishes to retain touch point grab,
4812 a filtering item may steal the grab. For example, Flickable may attempt
4813 to steal a touch point grab if it detects that the user has begun to
4816 \sa keepTouchGrab(), setKeepMouseGrab()
4818 void QQuickItem::setKeepTouchGrab(bool keep)
4821 d->keepTouch = keep;
4825 \qmlmethod object QtQuick2::Item::mapFromItem(Item item, real x, real y)
4827 Maps the point (\a x, \a y), which is in \a item's coordinate system, to
4828 this item's coordinate system, and returns an object with \c x and \c y
4829 properties matching the mapped coordinate.
4831 If \a item is a \c null value, this maps the point from the coordinate
4832 system of the root QML view.
4835 \qmlmethod object QtQuick2::Item::mapToItem(Item item, real x, real y)
4837 Maps the point (\a x, \a y), which is in this item's coordinate system, to
4838 \a item's coordinate system, and returns an object with \c x and \c y
4839 properties matching the mapped coordinate.
4841 If \a item is a \c null value, this maps \a x and \a y to the coordinate
4842 system of the root QML view.
4844 QPointF QQuickItem::mapToItem(const QQuickItem *item, const QPointF &point) const
4846 QPointF p = mapToScene(point);
4848 p = item->mapFromScene(p);
4852 QPointF QQuickItem::mapToScene(const QPointF &point) const
4854 Q_D(const QQuickItem);
4855 return d->itemToCanvasTransform().map(point);
4858 QRectF QQuickItem::mapRectToItem(const QQuickItem *item, const QRectF &rect) const
4860 Q_D(const QQuickItem);
4861 QTransform t = d->itemToCanvasTransform();
4863 t *= QQuickItemPrivate::get(item)->canvasToItemTransform();
4864 return t.mapRect(rect);
4867 QRectF QQuickItem::mapRectToScene(const QRectF &rect) const
4869 Q_D(const QQuickItem);
4870 return d->itemToCanvasTransform().mapRect(rect);
4873 QPointF QQuickItem::mapFromItem(const QQuickItem *item, const QPointF &point) const
4875 QPointF p = item?item->mapToScene(point):point;
4876 return mapFromScene(p);
4879 QPointF QQuickItem::mapFromScene(const QPointF &point) const
4881 Q_D(const QQuickItem);
4882 return d->canvasToItemTransform().map(point);
4885 QRectF QQuickItem::mapRectFromItem(const QQuickItem *item, const QRectF &rect) const
4887 Q_D(const QQuickItem);
4888 QTransform t = item?QQuickItemPrivate::get(item)->itemToCanvasTransform():QTransform();
4889 t *= d->canvasToItemTransform();
4890 return t.mapRect(rect);
4893 QRectF QQuickItem::mapRectFromScene(const QRectF &rect) const
4895 Q_D(const QQuickItem);
4896 return d->canvasToItemTransform().mapRect(rect);
4901 \qmlmethod QtQuick2::Item::forceActiveFocus()
4903 Forces active focus on the item.
4905 This method sets focus on the item and makes sure that all the focus scopes
4906 higher in the object hierarchy are also given the focus.
4910 Forces active focus on the item.
4912 This method sets focus on the item and makes sure that all the focus scopes
4913 higher in the object hierarchy are also given the focus.
4917 \qmlmethod QtQuick2::Item::childAt(real x, real y)
4919 Returns the visible child item at point (\a x, \a y), which is in this
4920 item's coordinate system, or \c null if there is no such item.
4924 Returns the visible child item at point (\a x, \a y), which is in this
4925 item's coordinate system, or 0 if there is no such item.
4929 \qmlproperty list<State> QtQuick2::Item::states
4930 This property holds a list of states defined by the item.
4946 \sa {qmlstate}{States}
4949 \qmlproperty list<Transition> QtQuick2::Item::transitions
4950 This property holds a list of transitions defined by the item.
4966 \sa {QML Animation and Transitions}{Transitions}
4969 \qmlproperty list<Filter> QtQuick2::Item::filter
4970 This property holds a list of graphical filters to be applied to the item.
4972 \l {Filter}{Filters} include things like \l {Blur}{blurring}
4973 the item, or giving it a \l Reflection. Some
4974 filters may not be available on all canvases; if a filter is not
4975 available on a certain canvas, it will simply not be applied for
4976 that canvas (but the QML will still be considered valid).
4994 \qmlproperty bool QtQuick2::Item::clip
4995 This property holds whether clipping is enabled. The default clip value is \c false.
4997 If clipping is enabled, an item will clip its own painting, as well
4998 as the painting of its children, to its bounding rectangle.
5000 Non-rectangular clipping regions are not supported for performance reasons.
5004 \property QQuickItem::clip
5005 This property holds whether clipping is enabled. The default clip value is \c false.
5007 If clipping is enabled, an item will clip its own painting, as well
5008 as the painting of its children, to its bounding rectangle. If you set
5009 clipping during an item's paint operation, remember to re-set it to
5010 prevent clipping the rest of your scene.
5012 Non-rectangular clipping regions are not supported for performance reasons.
5016 \qmlproperty string QtQuick2::Item::state
5018 This property holds the name of the current state of the item.
5020 This property is often used in scripts to change between states. For
5025 if (button.state == 'On')
5026 button.state = 'Off';
5028 button.state = 'On';
5032 If the item is in its base state (i.e. no explicit state has been
5033 set), \c state will be a blank string. Likewise, you can return an
5034 item to its base state by setting its current state to \c ''.
5036 \sa {qmlstates}{States}
5040 \qmlproperty list<Transform> QtQuick2::Item::transform
5041 This property holds the list of transformations to apply.
5043 For more information see \l Transform.
5047 \enum QQuickItem::TransformOrigin
5049 Controls the point about which simple transforms like scale apply.
5051 \value TopLeft The top-left corner of the item.
5052 \value Top The center point of the top of the item.
5053 \value TopRight The top-right corner of the item.
5054 \value Left The left most point of the vertical middle.
5055 \value Center The center of the item.
5056 \value Right The right most point of the vertical middle.
5057 \value BottomLeft The bottom-left corner of the item.
5058 \value Bottom The center point of the bottom of the item.
5059 \value BottomRight The bottom-right corner of the item.
5064 \qmlproperty bool QtQuick2::Item::activeFocus
5066 This property indicates whether the item has active focus.
5068 An item with active focus will receive keyboard input,
5069 or is a FocusScope ancestor of the item that will receive keyboard input.
5071 Usually, activeFocus is gained by setting focus on an item and its enclosing
5072 FocusScopes. In the following example \c input will have activeFocus.
5085 \sa focus, {qmlfocus}{Keyboard Focus}
5089 \qmlproperty bool QtQuick2::Item::focus
5090 This property indicates whether the item has focus within the enclosing focus scope. If true, this item
5091 will gain active focus when the enclosing focus scope gains active focus.
5092 In the following example, \c input will be given active focus when \c scope gains active focus.
5105 For the purposes of this property, the scene as a whole is assumed to act like a focus scope.
5106 On a practical level, that means the following QML will give active focus to \c input on startup.
5117 \sa activeFocus, {qmlfocus}{Keyboard Focus}
5122 \property QQuickItem::anchors
5127 \property QQuickItem::left
5132 \property QQuickItem::right
5137 \property QQuickItem::horizontalCenter
5142 \property QQuickItem::top
5147 \property QQuickItem::bottom
5152 \property QQuickItem::verticalCenter
5157 \property QQuickItem::focus
5162 \property QQuickItem::transform
5167 \property QQuickItem::transformOrigin
5172 \property QQuickItem::activeFocus
5177 \property QQuickItem::baseline
5182 \property QQuickItem::data
5187 \property QQuickItem::resources
5192 \property QQuickItem::state
5197 \property QQuickItem::states
5202 \property QQuickItem::transformOriginPoint
5207 \property QQuickItem::transitions
5211 bool QQuickItem::event(QEvent *ev)
5214 if (ev->type() == QEvent::PolishRequest) {
5216 d->polishScheduled = false;
5220 return QObject::event(ev);
5223 if (ev->type() == QEvent::InputMethodQuery) {
5224 QInputMethodQueryEvent *query = static_cast<QInputMethodQueryEvent *>(ev);
5225 Qt::InputMethodQueries queries = query->queries();
5226 for (uint i = 0; i < 32; ++i) {
5227 Qt::InputMethodQuery q = (Qt::InputMethodQuery)(int)(queries & (1<<i));
5229 QVariant v = inputMethodQuery(q);
5230 query->setValue(q, v);
5235 } else if (ev->type() == QEvent::InputMethod) {
5236 inputMethodEvent(static_cast<QInputMethodEvent *>(ev));
5239 return QObject::event(ev);
5242 #ifndef QT_NO_DEBUG_STREAM
5243 QDebug operator<<(QDebug debug, QQuickItem *item)
5246 debug << "QQuickItem(0)";
5250 debug << item->metaObject()->className() << "(this =" << ((void*)item)
5251 << ", name=" << item->objectName()
5252 << ", parent =" << ((void*)item->parentItem())
5253 << ", geometry =" << QRectF(item->pos(), QSizeF(item->width(), item->height()))
5254 << ", z =" << item->z() << ')';
5259 qint64 QQuickItemPrivate::consistentTime = -1;
5260 void QQuickItemPrivate::setConsistentTime(qint64 t)
5265 class QElapsedTimerConsistentTimeHack
5269 t1 = QQuickItemPrivate::consistentTime;
5273 return QQuickItemPrivate::consistentTime - t1;
5276 qint64 val = QQuickItemPrivate::consistentTime - t1;
5277 t1 = QQuickItemPrivate::consistentTime;
5287 void QQuickItemPrivate::start(QElapsedTimer &t)
5289 if (QQuickItemPrivate::consistentTime == -1)
5292 ((QElapsedTimerConsistentTimeHack*)&t)->start();
5295 qint64 QQuickItemPrivate::elapsed(QElapsedTimer &t)
5297 if (QQuickItemPrivate::consistentTime == -1)
5300 return ((QElapsedTimerConsistentTimeHack*)&t)->elapsed();
5303 qint64 QQuickItemPrivate::restart(QElapsedTimer &t)
5305 if (QQuickItemPrivate::consistentTime == -1)
5308 return ((QElapsedTimerConsistentTimeHack*)&t)->restart();
5312 \fn bool QQuickItem::isTextureProvider() const
5314 Returns true if this item is a texture provider. The default
5315 implementation returns false.
5317 This function can be called from any thread.
5320 bool QQuickItem::isTextureProvider() const
5322 Q_D(const QQuickItem);
5323 return d->_layer && d->_layer->effectSource() ? d->_layer->effectSource()->isTextureProvider() : false;
5327 \fn QSGTextureProvider *QQuickItem::textureProvider() const
5329 Returns the texture provider for an item. The default implementation
5332 This function may only be called on the rendering thread.
5335 QSGTextureProvider *QQuickItem::textureProvider() const
5337 Q_D(const QQuickItem);
5338 return d->_layer && d->_layer->effectSource() ? d->_layer->effectSource()->textureProvider() : 0;
5343 QQuickItemLayer *QQuickItemPrivate::layer() const
5346 _layer = new QQuickItemLayer(const_cast<QQuickItem *>(q_func()));
5352 QQuickItemLayer::QQuickItemLayer(QQuickItem *item)
5357 , m_componentComplete(true)
5358 , m_wrapMode(QQuickShaderEffectSource::ClampToEdge)
5359 , m_format(QQuickShaderEffectSource::RGBA)
5360 , m_effectComponent(0)
5364 m_name = QLatin1String("source");
5367 QQuickItemLayer::~QQuickItemLayer()
5369 delete m_effectSource;
5376 \qmlproperty bool QtQuick2::Item::layer.enabled
5378 Holds wether the item is layered or not. Layering is disabled by default.
5380 A layered item is rendered into an offscreen surface and cached until
5381 it is changed. Enabling layering for complex QML item hierarchies can
5382 some times be an optimization.
5384 None of the other layer properties have any effect when the layer
5388 void QQuickItemLayer::setEnabled(bool e)
5393 if (m_componentComplete) {
5400 emit enabledChanged(e);
5403 void QQuickItemLayer::classBegin()
5405 m_componentComplete = false;
5408 void QQuickItemLayer::componentComplete()
5410 m_componentComplete = true;
5415 void QQuickItemLayer::activate()
5417 QQuickItem *parentItem = m_item->parentItem();
5418 if (!m_effectSource)
5419 m_effectSource = new QQuickShaderEffectSource();
5422 m_effectSource->setParentItem(parentItem);
5423 m_effectSource->stackAfter(m_item);
5426 m_effectSource->setVisible(!m_effectComponent && m_item->isVisible());
5427 m_effectSource->setSourceItem(m_item);
5428 m_effectSource->setHideSource(true);
5429 m_effectSource->setSmooth(m_smooth);
5430 m_effectSource->setTextureSize(m_size);
5431 m_effectSource->setSourceRect(m_sourceRect);
5432 m_effectSource->setMipmap(m_mipmap);
5433 m_effectSource->setWrapMode(m_wrapMode);
5434 m_effectSource->setFormat(m_format);
5436 if (m_effectComponent) {
5438 QObject *created = m_effectComponent->create();
5439 m_effect = qobject_cast<QQuickShaderEffect *>(created);
5441 qWarning("Item: layer.effect is not a shader effect");
5447 m_effect->setParentItem(parentItem);
5448 m_effect->stackAfter(m_effectSource);
5450 m_effect->setVisible(m_item->isVisible());
5451 m_effect->setProperty(m_name.toLatin1(), qVariantFromValue<QObject *>(m_effectSource));
5461 QQuickItemPrivate *id = QQuickItemPrivate::get(m_item);
5462 id->addItemChangeListener(this, QQuickItemPrivate::Geometry | QQuickItemPrivate::Opacity | QQuickItemPrivate::Parent | QQuickItemPrivate::Visibility | QQuickItemPrivate::SiblingOrder);
5465 void QQuickItemLayer::deactivate()
5467 delete m_effectSource;
5473 QQuickItemPrivate *id = QQuickItemPrivate::get(m_item);
5474 id->removeItemChangeListener(this, QQuickItemPrivate::Geometry | QQuickItemPrivate::Opacity | QQuickItemPrivate::Parent | QQuickItemPrivate::Visibility | QQuickItemPrivate::SiblingOrder);
5480 \qmlproperty Component QtQuick2::Item::layer.effect
5482 Holds the effect that is applied to this layer.
5484 The effect must be a \l ShaderEffect.
5487 void QQuickItemLayer::setEffect(QDeclarativeComponent *component)
5489 if (component == m_effectComponent)
5491 m_effectComponent = component;
5501 emit effectChanged(component);
5506 \qmlproperty bool QtQuick2::Item::layer.mipmap
5508 If this property is true, mipmaps are generated for the texture.
5510 \note Some OpenGL ES 2 implementations do not support mipmapping of
5511 non-power-of-two textures.
5514 void QQuickItemLayer::setMipmap(bool mipmap)
5516 if (mipmap == m_mipmap)
5521 m_effectSource->setMipmap(m_mipmap);
5523 emit mipmapChanged(mipmap);
5528 \qmlproperty enumeration QtQuick2::Item::layer.format
5530 This property defines the internal OpenGL format of the texture.
5531 Modifying this property makes most sense when the \a layer.effect is also
5532 specified. Depending on the OpenGL implementation, this property might
5533 allow you to save some texture memory.
5536 \o ShaderEffectSource.Alpha - GL_ALPHA
5537 \o ShaderEffectSource.RGB - GL_RGB
5538 \o ShaderEffectSource.RGBA - GL_RGBA
5541 \note Some OpenGL implementations do not support the GL_ALPHA format.
5544 void QQuickItemLayer::setFormat(QQuickShaderEffectSource::Format f)
5551 m_effectSource->setFormat(m_format);
5553 emit formatChanged(m_format);
5558 \qmlproperty enumeration QtQuick2::Item::layer.sourceRect
5560 This property defines which rectangular area of the \l sourceItem to
5561 render into the texture. The source rectangle can be larger than
5562 \l sourceItem itself. If the rectangle is null, which is the default,
5563 the whole \l sourceItem is rendered to texture.
5566 void QQuickItemLayer::setSourceRect(const QRectF &sourceRect)
5568 if (sourceRect == m_sourceRect)
5570 m_sourceRect = sourceRect;
5573 m_effectSource->setSourceRect(m_sourceRect);
5575 emit sourceRectChanged(sourceRect);
5581 \qmlproperty bool QtQuick2::Item::layer.smooth
5583 Holds whether the layer is smoothly transformed.
5586 void QQuickItemLayer::setSmooth(bool s)
5593 m_effectSource->setSmooth(m_smooth);
5595 emit smoothChanged(s);
5601 \qmlproperty size QtQuick2::Item::layer.textureSize
5603 This property holds the requested pixel size of the layers texture. If it is empty,
5604 which is the default, the size of the item is used.
5606 \note Some platforms have a limit on how small framebuffer objects can be,
5607 which means the actual texture size might be larger than the requested
5611 void QQuickItemLayer::setSize(const QSize &size)
5618 m_effectSource->setTextureSize(size);
5620 emit sizeChanged(size);
5626 \qmlproperty enumeration QtQuick2::Item::layer.wrapMode
5628 This property defines the OpenGL wrap modes associated with the texture.
5629 Modifying this property makes most sense when the \a layer.effect is
5633 \o ShaderEffectSource.ClampToEdge - GL_CLAMP_TO_EDGE both horizontally and vertically
5634 \o ShaderEffectSource.RepeatHorizontally - GL_REPEAT horizontally, GL_CLAMP_TO_EDGE vertically
5635 \o ShaderEffectSource.RepeatVertically - GL_CLAMP_TO_EDGE horizontally, GL_REPEAT vertically
5636 \o ShaderEffectSource.Repeat - GL_REPEAT both horizontally and vertically
5639 \note Some OpenGL ES 2 implementations do not support the GL_REPEAT
5640 wrap mode with non-power-of-two textures.
5643 void QQuickItemLayer::setWrapMode(QQuickShaderEffectSource::WrapMode mode)
5645 if (mode != m_wrapMode)
5650 m_effectSource->setWrapMode(m_wrapMode);
5652 emit wrapModeChanged(mode);
5656 void QQuickItemLayer::itemOpacityChanged(QQuickItem *item)
5662 void QQuickItemLayer::itemGeometryChanged(QQuickItem *, const QRectF &, const QRectF &)
5667 void QQuickItemLayer::itemParentChanged(QQuickItem *item, QQuickItem *parent)
5670 if (parent == m_effectSource || parent == m_effect)
5673 m_effectSource->setParentItem(parent);
5675 m_effectSource->stackAfter(m_item);
5678 m_effect->setParentItem(parent);
5680 m_effect->stackAfter(m_effectSource);
5684 void QQuickItemLayer::itemSiblingOrderChanged(QQuickItem *)
5686 m_effectSource->stackAfter(m_item);
5688 m_effect->stackAfter(m_effectSource);
5691 void QQuickItemLayer::itemVisibilityChanged(QQuickItem *)
5693 QQuickItem *l = m_effect ? (QQuickItem *) m_effect : (QQuickItem *) m_effectSource;
5694 l->setVisible(m_item->isVisible());
5697 void QQuickItemLayer::updateZ()
5699 QQuickItem *l = m_effect ? (QQuickItem *) m_effect : (QQuickItem *) m_effectSource;
5700 l->setZ(m_item->z());
5703 void QQuickItemLayer::updateOpacity()
5705 QQuickItem *l = m_effect ? (QQuickItem *) m_effect : (QQuickItem *) m_effectSource;
5706 l->setOpacity(m_item->opacity());
5709 void QQuickItemLayer::updateGeometry()
5711 QQuickItem *l = m_effect ? (QQuickItem *) m_effect : (QQuickItem *) m_effectSource;
5712 QRectF bounds = m_item->boundingRect();
5713 l->setWidth(bounds.width());
5714 l->setHeight(bounds.height());
5715 l->setX(bounds.x() + m_item->x());
5716 l->setY(bounds.y() + m_item->y());
5719 void QQuickItemLayer::updateMatrix()
5721 // Called directly from transformChanged(), so needs some extra
5723 if (!m_componentComplete || !m_enabled)
5725 QQuickItem *l = m_effect ? (QQuickItem *) m_effect : (QQuickItem *) m_effectSource;
5726 QQuickItemPrivate *ld = QQuickItemPrivate::get(l);
5727 l->setScale(m_item->scale());
5728 l->setRotation(m_item->rotation());
5729 ld->transforms = QQuickItemPrivate::get(m_item)->transforms;
5730 ld->origin = QQuickItemPrivate::get(m_item)->origin;
5731 ld->dirty(QQuickItemPrivate::Transform);
5736 #include <moc_qquickitem.cpp>