本文整理汇总了C++中QQuickItem::itemTransform方法的典型用法代码示例。如果您正苦于以下问题：C++ QQuickItem::itemTransform方法的具体用法？C++ QQuickItem::itemTransform怎么用？C++ QQuickItem::itemTransform使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QQuickItem的用法示例。
在下文中一共展示了QQuickItem::itemTransform方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: transition
//.........这里部分代码省略.........
// (probably a result of modified vs. done)
if (d->newParent) {
QQuickParentChange *epc = new QQuickParentChange;
epc->setObject(static_cast<QQuickParentChange*>(action.event)->object());
epc->setParent(d->newParent);
myAction.event = epc;
data->pc << epc;
data->actions << myAction;
pc = epc;
} else {
action.actionDone = true;
data->actions << myAction;
}
if (d->via) {
viaData->reverse = false;
QQuickAction myAction;
QQuickParentChange *vpc = new QQuickParentChange;
vpc->setObject(pc->object());
vpc->setParent(d->via);
myAction.event = vpc;
viaData->pc << vpc;
viaData->actions << myAction;
QQuickAction dummyAction;
QQuickAction &xAction = pc->xIsSet() && i < actions.size()-1 ? actions[++i] : dummyAction;
QQuickAction &yAction = pc->yIsSet() && i < actions.size()-1 ? actions[++i] : dummyAction;
QQuickAction &sAction = pc->scaleIsSet() && i < actions.size()-1 ? actions[++i] : dummyAction;
QQuickAction &rAction = pc->rotationIsSet() && i < actions.size()-1 ? actions[++i] : dummyAction;
QQuickItem *target = pc->object();
QQuickItem *targetParent = action.reverseEvent ? pc->originalParent() : pc->parent();
//### this mirrors the logic in QQuickParentChange.
bool ok;
const QTransform &transform = targetParent->itemTransform(d->via, &ok);
if (transform.type() >= QTransform::TxShear || !ok) {
qmlInfo(this) << QQuickParentAnimation::tr("Unable to preserve appearance under complex transform");
ok = false;
}
qreal scale = 1;
qreal rotation = 0;
bool isRotate = (transform.type() == QTransform::TxRotate) || (transform.m11() < 0);
if (ok && !isRotate) {
if (transform.m11() == transform.m22())
scale = transform.m11();
else {
qmlInfo(this) << QQuickParentAnimation::tr("Unable to preserve appearance under non-uniform scale");
ok = false;
}
} else if (ok && isRotate) {
if (transform.m11() == transform.m22())
scale = qSqrt(transform.m11()*transform.m11() + transform.m12()*transform.m12());
else {
qmlInfo(this) << QQuickParentAnimation::tr("Unable to preserve appearance under non-uniform scale");
ok = false;
}
if (scale != 0)
rotation = atan2(transform.m12()/scale, transform.m11()/scale) * 180/M_PI;
else {
qmlInfo(this) << QQuickParentAnimation::tr("Unable to preserve appearance under scale of 0");
ok = false;
}
}
const QPointF &point = transform.map(QPointF(xAction.toValue.toReal(),yAction.toValue.toReal()));