virtual void doAction()
{
for (int ii = 0; ii < actions.count(); ++ii) {
const QQuickAction &action = actions.at(ii);
if (reverse)
action.event->reverse();
else
action.event->execute();
}
}
void QSGSequentialAnimation::prepareTransition(QQuickStateActions &actions,
QQmlProperties &modified,
TransitionDirection direction,
QObject *defaultTarget)
{
if (direction != Forward)
qWarning("QSGSequentialAnimation::prepareTransition - Backward transition not yet supported.");
if (actions.count() > 0) {
registerToHost(actions.at(0).property.object());
}
int count = children().count();
for (int i = 0; i < count; i++) {
QSGAbstractAnimation* a = dynamic_cast<QSGAbstractAnimation*> (children().at(i));
if (a)
a->prepareTransition(actions, modified, direction, defaultTarget);
}
}
QAbstractAnimationJob* QQuickParentAnimation::transition(QQuickStateActions &actions,
QQmlProperties &modified,
TransitionDirection direction,
QObject *defaultTarget)
{
Q_D(QQuickParentAnimation);
struct QQuickParentAnimationData : public QAbstractAnimationAction
{
QQuickParentAnimationData() : reverse(false) {}
~QQuickParentAnimationData() { qDeleteAll(pc); }
QQuickStateActions actions;
//### reverse should probably apply on a per-action basis
bool reverse;
QList<QQuickParentChange *> pc;
void doAction() Q_DECL_OVERRIDE
{
for (int ii = 0; ii < actions.count(); ++ii) {
const QQuickStateAction &action = actions.at(ii);
if (reverse)
action.event->reverse();
else
action.event->execute();
}
}
};
QQuickParentAnimationData *data = new QQuickParentAnimationData;
QQuickParentAnimationData *viaData = new QQuickParentAnimationData;
bool hasExplicit = false;
if (d->target && d->newParent) {
data->reverse = false;
QQuickStateAction myAction;
QQuickParentChange *pc = new QQuickParentChange;
pc->setObject(d->target);
pc->setParent(d->newParent);
myAction.event = pc;
data->pc << pc;
data->actions << myAction;
hasExplicit = true;
if (d->via) {
viaData->reverse = false;
QQuickStateAction myVAction;
QQuickParentChange *vpc = new QQuickParentChange;
vpc->setObject(d->target);
vpc->setParent(d->via);
myVAction.event = vpc;
viaData->pc << vpc;
viaData->actions << myVAction;
}
//### once actions have concept of modified,
// loop to match appropriate ParentChanges and mark as modified
}
if (!hasExplicit)
for (int i = 0; i < actions.size(); ++i) {
QQuickStateAction &action = actions[i];
if (action.event && action.event->type() == QQuickStateActionEvent::ParentChange
&& (!d->target || static_cast<QQuickParentChange*>(action.event)->object() == d->target)) {
QQuickParentChange *pc = static_cast<QQuickParentChange*>(action.event);
QQuickStateAction myAction = action;
data->reverse = action.reverseEvent;
//### this logic differs from PropertyAnimation
// (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;
QQuickStateAction myAction;
QQuickParentChange *vpc = new QQuickParentChange;
vpc->setObject(pc->object());
vpc->setParent(d->via);
myAction.event = vpc;
viaData->pc << vpc;
viaData->actions << myAction;
QQuickStateAction dummyAction;
QQuickStateAction &xAction = pc->xIsSet() && i < actions.size()-1 ? actions[++i] : dummyAction;
QQuickStateAction &yAction = pc->yIsSet() && i < actions.size()-1 ? actions[++i] : dummyAction;
QQuickStateAction &sAction = pc->scaleIsSet() && i < actions.size()-1 ? actions[++i] : dummyAction;
QQuickStateAction &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 = qAtan2(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()));
qreal x = point.x();
qreal y = point.y();
if (ok && target->transformOrigin() != QQuickItem::TopLeft) {
qreal w = target->width();
qreal h = target->height();
if (pc->widthIsSet() && i < actions.size() - 1)
w = actions[++i].toValue.toReal();
if (pc->heightIsSet() && i < actions.size() - 1)
h = actions[++i].toValue.toReal();
const QPointF &transformOrigin
= d->computeTransformOrigin(target->transformOrigin(), w,h);
qreal tempxt = transformOrigin.x();
qreal tempyt = transformOrigin.y();
QTransform t;
t.translate(-tempxt, -tempyt);
t.rotate(rotation);
t.scale(scale, scale);
t.translate(tempxt, tempyt);
const QPointF &offset = t.map(QPointF(0,0));
x += offset.x();
y += offset.y();
}
if (ok) {
//qDebug() << x << y << rotation << scale;
xAction.toValue = x;
yAction.toValue = y;
sAction.toValue = sAction.toValue.toReal() * scale;
rAction.toValue = rAction.toValue.toReal() + rotation;
}
}
}
}
if (data->actions.count()) {
QSequentialAnimationGroupJob *topLevelGroup = new QSequentialAnimationGroupJob;
QActionAnimation *viaAction = d->via ? new QActionAnimation : 0;
QActionAnimation *targetAction = new QActionAnimation;
//we'll assume the common case by far is to have children, and always create ag
QParallelAnimationGroupJob *ag = new QParallelAnimationGroupJob;
if (d->via)
viaAction->setAnimAction(viaData);
targetAction->setAnimAction(data);
//take care of any child animations
bool valid = d->defaultProperty.isValid();
QAbstractAnimationJob* anim;
for (int ii = 0; ii < d->animations.count(); ++ii) {
if (valid)
d->animations.at(ii)->setDefaultTarget(d->defaultProperty);
anim = d->animations.at(ii)->transition(actions, modified, direction, defaultTarget);
if (anim)
ag->appendAnimation(anim);
}
//TODO: simplify/clarify logic
bool forwards = direction == QQuickAbstractAnimation::Forward;
if (forwards) {
topLevelGroup->appendAnimation(d->via ? viaAction : targetAction);
topLevelGroup->appendAnimation(ag);
if (d->via)
topLevelGroup->appendAnimation(targetAction);
} else {
if (d->via)
topLevelGroup->appendAnimation(targetAction);
topLevelGroup->appendAnimation(ag);
topLevelGroup->appendAnimation(d->via ? viaAction : targetAction);
}
return initInstance(topLevelGroup);
} else {
delete data;
delete viaData;
}
return 0;
}