void QQuickPinchArea::updatePinch()
{
Q_D(QQuickPinchArea);
QQuickWindow *win = window();
if (d->touchPoints.count() < 2) {
setKeepMouseGrab(false);
QQuickWindow *c = window();
if (c && c->mouseGrabberItem() == this)
ungrabMouse();
}
if (d->touchPoints.count() == 0) {
if (d->inPinch) {
d->inPinch = false;
QPointF pinchCenter = mapFromScene(d->sceneLastCenter);
QQuickPinchEvent pe(pinchCenter, d->pinchLastScale, d->pinchLastAngle, d->pinchRotation);
pe.setStartCenter(d->pinchStartCenter);
pe.setPreviousCenter(pinchCenter);
pe.setPreviousAngle(d->pinchLastAngle);
pe.setPreviousScale(d->pinchLastScale);
pe.setStartPoint1(mapFromScene(d->sceneStartPoint1));
pe.setStartPoint2(mapFromScene(d->sceneStartPoint2));
pe.setPoint1(mapFromScene(d->lastPoint1));
pe.setPoint2(mapFromScene(d->lastPoint2));
emit pinchFinished(&pe);
d->pinchStartDist = 0;
d->pinchActivated = false;
if (d->pinch && d->pinch->target())
d->pinch->setActive(false);
}
d->initPinch = false;
d->pinchRejected = false;
d->stealMouse = false;
return;
}
QTouchEvent::TouchPoint touchPoint1 = d->touchPoints.at(0);
QTouchEvent::TouchPoint touchPoint2 = d->touchPoints.at(d->touchPoints. count() >= 2 ? 1 : 0);
if (touchPoint1.state() == Qt::TouchPointPressed)
d->sceneStartPoint1 = touchPoint1.scenePos();
if (touchPoint2.state() == Qt::TouchPointPressed)
d->sceneStartPoint2 = touchPoint2.scenePos();
QRectF bounds = clipRect();
// Pinch is not started unless there are exactly two touch points
// AND one or more of the points has just now been pressed (wasn't pressed already)
// AND both points are inside the bounds.
if (d->touchPoints.count() == 2
&& (touchPoint1.state() & Qt::TouchPointPressed || touchPoint2.state() & Qt::TouchPointPressed) &&
bounds.contains(touchPoint1.pos()) && bounds.contains(touchPoint2.pos())) {
d->id1 = touchPoint1.id();
d->pinchActivated = true;
d->initPinch = true;
int touchMouseId = QQuickWindowPrivate::get(win)->touchMouseId;
if (touchPoint1.id() == touchMouseId || touchPoint2.id() == touchMouseId) {
if (win && win->mouseGrabberItem() != this) {
grabMouse();
}
}
}
if (d->pinchActivated && !d->pinchRejected) {
const int dragThreshold = qApp->styleHints()->startDragDistance();
QPointF p1 = touchPoint1.scenePos();
QPointF p2 = touchPoint2.scenePos();
qreal dx = p1.x() - p2.x();
qreal dy = p1.y() - p2.y();
qreal dist = sqrt(dx*dx + dy*dy);
QPointF sceneCenter = (p1 + p2)/2;
qreal angle = QLineF(p1, p2).angle();
if (d->touchPoints.count() == 1) {
// If we only have one point then just move the center
if (d->id1 == touchPoint1.id())
sceneCenter = d->sceneLastCenter + touchPoint1.scenePos() - d->lastPoint1;
else
sceneCenter = d->sceneLastCenter + touchPoint2.scenePos() - d->lastPoint2;
angle = d->pinchLastAngle;
}
d->id1 = touchPoint1.id();
if (angle > 180)
angle -= 360;
if (!d->inPinch || d->initPinch) {
if (d->touchPoints.count() >= 2) {
if (d->initPinch) {
if (!d->inPinch)
d->pinchStartDist = dist;
d->initPinch = false;
}
d->sceneStartCenter = sceneCenter;
d->sceneLastCenter = sceneCenter;
d->pinchStartCenter = mapFromScene(sceneCenter);
d->pinchStartAngle = angle;
d->pinchLastScale = 1.0;
d->pinchLastAngle = angle;
d->pinchRotation = 0.0;
d->lastPoint1 = p1;
d->lastPoint2 = p2;
if (qAbs(dist - d->pinchStartDist) >= dragThreshold ||
(pinch()->axis() != QQuickPinch::NoDrag &&
(qAbs(p1.x()-d->sceneStartPoint1.x()) >= dragThreshold
|| qAbs(p1.y()-d->sceneStartPoint1.y()) >= dragThreshold
|| qAbs(p2.x()-d->sceneStartPoint2.x()) >= dragThreshold
|| qAbs(p2.y()-d->sceneStartPoint2.y()) >= dragThreshold))) {
QQuickPinchEvent pe(d->pinchStartCenter, 1.0, angle, 0.0);
d->pinchStartDist = dist;
pe.setStartCenter(d->pinchStartCenter);
pe.setPreviousCenter(d->pinchStartCenter);
pe.setPreviousAngle(d->pinchLastAngle);
pe.setPreviousScale(d->pinchLastScale);
pe.setStartPoint1(mapFromScene(d->sceneStartPoint1));
pe.setStartPoint2(mapFromScene(d->sceneStartPoint2));
pe.setPoint1(mapFromScene(d->lastPoint1));
pe.setPoint2(mapFromScene(d->lastPoint2));
pe.setPointCount(d->touchPoints.count());
emit pinchStarted(&pe);
if (pe.accepted()) {
d->inPinch = true;
d->stealMouse = true;
if (win && win->mouseGrabberItem() != this)
grabMouse();
setKeepMouseGrab(true);
grabTouchPoints(QVector<int>() << touchPoint1.id() << touchPoint2.id());
d->inPinch = true;
d->stealMouse = true;
if (d->pinch && d->pinch->target()) {
d->pinchStartPos = pinch()->target()->position();
d->pinchStartScale = d->pinch->target()->scale();
d->pinchStartRotation = d->pinch->target()->rotation();
d->pinch->setActive(true);
}
} else {
d->pinchRejected = true;
}
}
}
} else if (d->pinchStartDist > 0) {
qreal scale = dist ? dist / d->pinchStartDist : d->pinchLastScale;
qreal da = d->pinchLastAngle - angle;
if (da > 180)
da -= 360;
else if (da < -180)
da += 360;
d->pinchRotation += da;
QPointF pinchCenter = mapFromScene(sceneCenter);
QQuickPinchEvent pe(pinchCenter, scale, angle, d->pinchRotation);
pe.setStartCenter(d->pinchStartCenter);
pe.setPreviousCenter(mapFromScene(d->sceneLastCenter));
pe.setPreviousAngle(d->pinchLastAngle);
pe.setPreviousScale(d->pinchLastScale);
pe.setStartPoint1(mapFromScene(d->sceneStartPoint1));
pe.setStartPoint2(mapFromScene(d->sceneStartPoint2));
pe.setPoint1(touchPoint1.pos());
pe.setPoint2(touchPoint2.pos());
pe.setPointCount(d->touchPoints.count());
d->pinchLastScale = scale;
d->sceneLastCenter = sceneCenter;
d->pinchLastAngle = angle;
d->lastPoint1 = touchPoint1.scenePos();
d->lastPoint2 = touchPoint2.scenePos();
emit pinchUpdated(&pe);
if (d->pinch && d->pinch->target()) {
qreal s = d->pinchStartScale * scale;
s = qMin(qMax(pinch()->minimumScale(),s), pinch()->maximumScale());
pinch()->target()->setScale(s);
QPointF pos = sceneCenter - d->sceneStartCenter + d->pinchStartPos;
if (pinch()->axis() & QQuickPinch::XAxis) {
qreal x = pos.x();
if (x < pinch()->xmin())
x = pinch()->xmin();
else if (x > pinch()->xmax())
x = pinch()->xmax();
pinch()->target()->setX(x);
}
if (pinch()->axis() & QQuickPinch::YAxis) {
qreal y = pos.y();
if (y < pinch()->ymin())
y = pinch()->ymin();
else if (y > pinch()->ymax())
y = pinch()->ymax();
pinch()->target()->setY(y);
}
if (d->pinchStartRotation >= pinch()->minimumRotation()
&& d->pinchStartRotation <= pinch()->maximumRotation()) {
qreal r = d->pinchRotation + d->pinchStartRotation;
r = qMin(qMax(pinch()->minimumRotation(),r), pinch()->maximumRotation());
pinch()->target()->setRotation(r);
}
}
}
}
}
void QSGPinchArea::updatePinch()
{
Q_D(QSGPinchArea);
if (d->touchPoints.count() == 0) {
if (d->inPinch) {
d->inPinch = false;
QPointF pinchCenter = mapFromScene(d->sceneLastCenter);
QSGPinchEvent pe(pinchCenter, d->pinchLastScale, d->pinchLastAngle, d->pinchRotation);
pe.setStartCenter(d->pinchStartCenter);
pe.setPreviousCenter(pinchCenter);
pe.setPreviousAngle(d->pinchLastAngle);
pe.setPreviousScale(d->pinchLastScale);
pe.setStartPoint1(mapFromScene(d->sceneStartPoint1));
pe.setStartPoint2(mapFromScene(d->sceneStartPoint2));
pe.setPoint1(mapFromScene(d->lastPoint1));
pe.setPoint2(mapFromScene(d->lastPoint2));
emit pinchFinished(&pe);
d->pinchStartDist = 0;
d->pinchActivated = false;
if (d->pinch && d->pinch->target())
d->pinch->setActive(false);
}
d->initPinch = false;
d->pinchRejected = false;
d->stealMouse = false;
setKeepMouseGrab(false);
QSGCanvas *c = canvas();
if (c && c->mouseGrabberItem() == this)
ungrabMouse();
return;
}
QTouchEvent::TouchPoint touchPoint1 = d->touchPoints.at(0);
QTouchEvent::TouchPoint touchPoint2 = d->touchPoints.at(d->touchPoints. count() >= 2 ? 1 : 0);
if (d->touchPoints.count() == 2
&& (touchPoint1.state() & Qt::TouchPointPressed || touchPoint2.state() & Qt::TouchPointPressed)) {
d->id1 = touchPoint1.id();
d->sceneStartPoint1 = touchPoint1.scenePos();
d->sceneStartPoint2 = touchPoint2.scenePos();
d->pinchActivated = true;
d->initPinch = true;
}
if (d->pinchActivated && !d->pinchRejected){
const int dragThreshold = QApplication::startDragDistance();
QPointF p1 = touchPoint1.scenePos();
QPointF p2 = touchPoint2.scenePos();
qreal dx = p1.x() - p2.x();
qreal dy = p1.y() - p2.y();
qreal dist = sqrt(dx*dx + dy*dy);
QPointF sceneCenter = (p1 + p2)/2;
qreal angle = QLineF(p1, p2).angle();
if (d->touchPoints.count() == 1) {
// If we only have one point then just move the center
if (d->id1 == touchPoint1.id())
sceneCenter = d->sceneLastCenter + touchPoint1.scenePos() - d->lastPoint1;
else
sceneCenter = d->sceneLastCenter + touchPoint2.scenePos() - d->lastPoint2;
angle = d->pinchLastAngle;
}
d->id1 = touchPoint1.id();
if (angle > 180)
angle -= 360;
if (!d->inPinch || d->initPinch) {
if (d->touchPoints.count() >= 2
&& (qAbs(p1.x()-d->sceneStartPoint1.x()) > dragThreshold
|| qAbs(p1.y()-d->sceneStartPoint1.y()) > dragThreshold
|| qAbs(p2.x()-d->sceneStartPoint2.x()) > dragThreshold
|| qAbs(p2.y()-d->sceneStartPoint2.y()) > dragThreshold)) {
d->initPinch = false;
d->sceneStartCenter = sceneCenter;
d->sceneLastCenter = sceneCenter;
d->pinchStartCenter = mapFromScene(sceneCenter);
d->pinchStartDist = dist;
d->pinchStartAngle = angle;
d->pinchLastScale = 1.0;
d->pinchLastAngle = angle;
d->pinchRotation = 0.0;
d->lastPoint1 = p1;
d->lastPoint2 = p2;
QSGPinchEvent pe(d->pinchStartCenter, 1.0, angle, 0.0);
pe.setStartCenter(d->pinchStartCenter);
pe.setPreviousCenter(d->pinchStartCenter);
pe.setPreviousAngle(d->pinchLastAngle);
pe.setPreviousScale(d->pinchLastScale);
pe.setStartPoint1(mapFromScene(d->sceneStartPoint1));
pe.setStartPoint2(mapFromScene(d->sceneStartPoint2));
pe.setPoint1(mapFromScene(d->lastPoint1));
pe.setPoint2(mapFromScene(d->lastPoint2));
pe.setPointCount(d->touchPoints.count());
emit pinchStarted(&pe);
if (pe.accepted()) {
d->inPinch = true;
d->stealMouse = true;
QSGCanvas *c = canvas();
if (c && c->mouseGrabberItem() != this)
grabMouse();
setKeepMouseGrab(true);
if (d->pinch && d->pinch->target()) {
d->pinchStartPos = pinch()->target()->pos();
d->pinchStartScale = d->pinch->target()->scale();
d->pinchStartRotation = d->pinch->target()->rotation();
d->pinch->setActive(true);
}
} else {
d->pinchRejected = true;
}
}
} else if (d->pinchStartDist > 0) {
qreal scale = dist ? dist / d->pinchStartDist : d->pinchLastScale;
qreal da = d->pinchLastAngle - angle;
if (da > 180)
da -= 360;
else if (da < -180)
da += 360;
d->pinchRotation += da;
QPointF pinchCenter = mapFromScene(sceneCenter);
QSGPinchEvent pe(pinchCenter, scale, angle, d->pinchRotation);
pe.setStartCenter(d->pinchStartCenter);
pe.setPreviousCenter(mapFromScene(d->sceneLastCenter));
pe.setPreviousAngle(d->pinchLastAngle);
pe.setPreviousScale(d->pinchLastScale);
pe.setStartPoint1(mapFromScene(d->sceneStartPoint1));
pe.setStartPoint2(mapFromScene(d->sceneStartPoint2));
pe.setPoint1(touchPoint1.pos());
pe.setPoint2(touchPoint2.pos());
pe.setPointCount(d->touchPoints.count());
d->pinchLastScale = scale;
d->sceneLastCenter = sceneCenter;
d->pinchLastAngle = angle;
d->lastPoint1 = touchPoint1.scenePos();
d->lastPoint2 = touchPoint2.scenePos();
emit pinchUpdated(&pe);
if (d->pinch && d->pinch->target()) {
qreal s = d->pinchStartScale * scale;
s = qMin(qMax(pinch()->minimumScale(),s), pinch()->maximumScale());
pinch()->target()->setScale(s);
QPointF pos = sceneCenter - d->sceneStartCenter + d->pinchStartPos;
if (pinch()->axis() & QSGPinch::XAxis) {
qreal x = pos.x();
if (x < pinch()->xmin())
x = pinch()->xmin();
else if (x > pinch()->xmax())
x = pinch()->xmax();
pinch()->target()->setX(x);
}
if (pinch()->axis() & QSGPinch::YAxis) {
qreal y = pos.y();
if (y < pinch()->ymin())
y = pinch()->ymin();
else if (y > pinch()->ymax())
y = pinch()->ymax();
pinch()->target()->setY(y);
}
if (d->pinchStartRotation >= pinch()->minimumRotation()
&& d->pinchStartRotation <= pinch()->maximumRotation()) {
qreal r = d->pinchRotation + d->pinchStartRotation;
r = qMin(qMax(pinch()->minimumRotation(),r), pinch()->maximumRotation());
pinch()->target()->setRotation(r);
}
}
}
}
}
