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-rw-r--r--src/declarative/graphicsitems/qdeclarativepincharea.cpp236
1 files changed, 129 insertions, 107 deletions
diff --git a/src/declarative/graphicsitems/qdeclarativepincharea.cpp b/src/declarative/graphicsitems/qdeclarativepincharea.cpp
index 9bc3d8d..c30ff8c 100644
--- a/src/declarative/graphicsitems/qdeclarativepincharea.cpp
+++ b/src/declarative/graphicsitems/qdeclarativepincharea.cpp
@@ -138,6 +138,14 @@ QT_BEGIN_NAMESPACE
ignored.
*/
+/*!
+ \qmlproperty int PinchEvent::pointCount
+
+ Holds the number of points currently touched. The PinchArea will not react
+ until two touch points have initited a gesture, but will remain active until
+ all touch points have been released.
+*/
+
QDeclarativePinch::QDeclarativePinch()
: m_target(0), m_minScale(1.0), m_maxScale(1.0)
, m_minRotation(0.0), m_maxRotation(0.0)
@@ -295,7 +303,7 @@ bool QDeclarativePinchArea::event(QEvent *event)
void QDeclarativePinchArea::updatePinch()
{
Q_D(QDeclarativePinchArea);
- if (d->touchPoints.count() != 2) {
+ if (d->touchPoints.count() == 0) {
if (d->inPinch) {
d->stealMouse = false;
setKeepMouseGrab(false);
@@ -308,127 +316,141 @@ void QDeclarativePinchArea::updatePinch()
pe.setPreviousScale(d->pinchLastScale);
pe.setStartPoint1(mapFromScene(d->sceneStartPoint1));
pe.setStartPoint2(mapFromScene(d->sceneStartPoint2));
- pe.setPoint1(d->lastPoint1);
- pe.setPoint2(d->lastPoint2);
+ 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);
}
return;
}
- if (d->touchPoints.at(0).state() & Qt::TouchPointPressed
- || d->touchPoints.at(1).state() & Qt::TouchPointPressed) {
- d->sceneStartPoint1 = d->touchPoints.at(0).scenePos();
- d->sceneStartPoint2 = d->touchPoints.at(1).scenePos();
+ 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->inPinch = false;
d->pinchRejected = false;
- } else if (!d->pinchRejected){
- QDeclarativeItem *grabber = scene() ? qobject_cast<QDeclarativeItem*>(scene()->mouseGrabberItem()) : 0;
- if (grabber == this || !grabber || !grabber->keepMouseGrab()) {
- const int dragThreshold = QApplication::startDragDistance();
- QPointF p1 = d->touchPoints.at(0).scenePos();
- QPointF p2 = d->touchPoints.at(1).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 (angle > 180)
- angle -= 360;
- if (!d->inPinch) {
- if (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->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 = d->touchPoints.at(0).pos();
- d->lastPoint2 = d->touchPoints.at(1).pos();
- QDeclarativePinchEvent 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(d->lastPoint1);
- pe.setPoint2(d->lastPoint2);
- emit pinchStarted(&pe);
- if (pe.accepted()) {
- d->inPinch = true;
- d->stealMouse = true;
- QGraphicsScene *s = scene();
- if (s && s->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 / d->pinchStartDist;
- qreal da = d->pinchLastAngle - angle;
- if (da > 180)
- da -= 360;
- else if (da < -180)
- da += 360;
- d->pinchRotation += da;
- QPointF pinchCenter = mapFromScene(sceneCenter);
- QDeclarativePinchEvent pe(pinchCenter, scale, angle, d->pinchRotation);
+ d->pinchActivated = true;
+ } else 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) {
+ 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->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;
+ QDeclarativePinchEvent pe(d->pinchStartCenter, 1.0, angle, 0.0);
pe.setStartCenter(d->pinchStartCenter);
- pe.setPreviousCenter(mapFromScene(d->sceneLastCenter));
+ pe.setPreviousCenter(d->pinchStartCenter);
pe.setPreviousAngle(d->pinchLastAngle);
pe.setPreviousScale(d->pinchLastScale);
pe.setStartPoint1(mapFromScene(d->sceneStartPoint1));
pe.setStartPoint2(mapFromScene(d->sceneStartPoint2));
- pe.setPoint1(d->touchPoints.at(0).pos());
- pe.setPoint2(d->touchPoints.at(1).pos());
- d->pinchLastScale = scale;
- d->sceneLastCenter = sceneCenter;
- d->pinchLastAngle = angle;
- d->lastPoint1 = d->touchPoints.at(0).pos();
- d->lastPoint2 = d->touchPoints.at(1).pos();
- 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() & QDeclarativePinch::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() & QDeclarativePinch::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);
+ 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;
+ QGraphicsScene *s = scene();
+ if (s && s->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);
+ QDeclarativePinchEvent 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() & QDeclarativePinch::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() & QDeclarativePinch::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);
}
}
}
generated by cgit v0.12 at 2024-12-27 12:25:27 (GMT)