--- a/src/gui/kernel/qstandardgestures.cpp Tue Jan 26 12:42:25 2010 +0200
+++ b/src/gui/kernel/qstandardgestures.cpp Tue Feb 02 00:43:10 2010 +0200
@@ -44,6 +44,8 @@
#include "qgesture_p.h"
#include "qevent.h"
#include "qwidget.h"
+#include "qabstractscrollarea.h"
+#include "qdebug.h"
QT_BEGIN_NAMESPACE
@@ -51,29 +53,35 @@
{
}
-QGesture *QPanGestureRecognizer::createGesture(QObject *target)
+QGesture *QPanGestureRecognizer::create(QObject *target)
{
if (target && target->isWidgetType()) {
+#if defined(Q_OS_WIN) && !defined(QT_NO_NATIVE_GESTURES)
+ // for scroll areas on Windows we want to use native gestures instead
+ if (!qobject_cast<QAbstractScrollArea *>(target->parent()))
+ static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);
+#else
static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);
+#endif
}
return new QPanGesture;
}
-QGestureRecognizer::Result QPanGestureRecognizer::filterEvent(QGesture *state, QObject *, QEvent *event)
+QGestureRecognizer::Result QPanGestureRecognizer::recognize(QGesture *state,
+ QObject *,
+ QEvent *event)
{
- QPanGesture *q = static_cast<QPanGesture*>(state);
+ QPanGesture *q = static_cast<QPanGesture *>(state);
QPanGesturePrivate *d = q->d_func();
- const QTouchEvent *ev = static_cast<const QTouchEvent*>(event);
+ const QTouchEvent *ev = static_cast<const QTouchEvent *>(event);
QGestureRecognizer::Result result;
-
switch (event->type()) {
case QEvent::TouchBegin: {
- result = QGestureRecognizer::MaybeGesture;
+ result = QGestureRecognizer::MayBeGesture;
QTouchEvent::TouchPoint p = ev->touchPoints().at(0);
- d->lastPosition = p.pos().toPoint();
- d->lastOffset = d->totalOffset = d->offset = QPointF();
+ d->lastOffset = d->offset = QPointF();
break;
}
case QEvent::TouchEnd: {
@@ -83,13 +91,12 @@
QTouchEvent::TouchPoint p2 = ev->touchPoints().at(1);
d->lastOffset = d->offset;
d->offset =
- QPointF(p1.pos().x() - p1.lastPos().x() + p2.pos().x() - p2.lastPos().x(),
- p1.pos().y() - p1.lastPos().y() + p2.pos().y() - p2.lastPos().y()) / 2;
- d->totalOffset += d->offset;
+ QPointF(p1.pos().x() - p1.startPos().x() + p2.pos().x() - p2.startPos().x(),
+ p1.pos().y() - p1.startPos().y() + p2.pos().y() - p2.startPos().y()) / 2;
}
- result = QGestureRecognizer::GestureFinished;
+ result = QGestureRecognizer::FinishGesture;
} else {
- result = QGestureRecognizer::NotGesture;
+ result = QGestureRecognizer::CancelGesture;
}
break;
}
@@ -99,14 +106,13 @@
QTouchEvent::TouchPoint p2 = ev->touchPoints().at(1);
d->lastOffset = d->offset;
d->offset =
- QPointF(p1.pos().x() - p1.lastPos().x() + p2.pos().x() - p2.lastPos().x(),
- p1.pos().y() - p1.lastPos().y() + p2.pos().y() - p2.lastPos().y()) / 2;
- d->totalOffset += d->offset;
- if (d->totalOffset.x() > 10 || d->totalOffset.y() > 10 ||
- d->totalOffset.x() < -10 || d->totalOffset.y() < -10) {
- result = QGestureRecognizer::GestureTriggered;
+ QPointF(p1.pos().x() - p1.startPos().x() + p2.pos().x() - p2.startPos().x(),
+ p1.pos().y() - p1.startPos().y() + p2.pos().y() - p2.startPos().y()) / 2;
+ if (d->offset.x() > 10 || d->offset.y() > 10 ||
+ d->offset.x() < -10 || d->offset.y() < -10) {
+ result = QGestureRecognizer::TriggerGesture;
} else {
- result = QGestureRecognizer::MaybeGesture;
+ result = QGestureRecognizer::MayBeGesture;
}
}
break;
@@ -128,109 +134,433 @@
QPanGesture *pan = static_cast<QPanGesture*>(state);
QPanGesturePrivate *d = pan->d_func();
- d->totalOffset = d->lastOffset = d->offset = QPointF();
- d->lastPosition = QPoint();
+ d->lastOffset = d->offset = QPointF();
d->acceleration = 0;
-//#if defined(QT_MAC_USE_COCOA)
-// d->singleTouchPanTimer.stop();
-// d->prevMousePos = QPointF(0, 0);
-//#endif
+ QGestureRecognizer::reset(state);
+}
+
+
+//
+// QPinchGestureRecognizer
+//
+
+QPinchGestureRecognizer::QPinchGestureRecognizer()
+{
+}
+
+QGesture *QPinchGestureRecognizer::create(QObject *target)
+{
+ if (target && target->isWidgetType()) {
+ static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);
+ }
+ return new QPinchGesture;
+}
+
+QGestureRecognizer::Result QPinchGestureRecognizer::recognize(QGesture *state,
+ QObject *,
+ QEvent *event)
+{
+ QPinchGesture *q = static_cast<QPinchGesture *>(state);
+ QPinchGesturePrivate *d = q->d_func();
+
+ const QTouchEvent *ev = static_cast<const QTouchEvent *>(event);
+
+ QGestureRecognizer::Result result;
+
+ switch (event->type()) {
+ case QEvent::TouchBegin: {
+ result = QGestureRecognizer::MayBeGesture;
+ break;
+ }
+ case QEvent::TouchEnd: {
+ if (q->state() != Qt::NoGesture) {
+ result = QGestureRecognizer::FinishGesture;
+ } else {
+ result = QGestureRecognizer::CancelGesture;
+ }
+ break;
+ }
+ case QEvent::TouchUpdate: {
+ d->changeFlags = 0;
+ if (ev->touchPoints().size() == 2) {
+ QTouchEvent::TouchPoint p1 = ev->touchPoints().at(0);
+ QTouchEvent::TouchPoint p2 = ev->touchPoints().at(1);
+
+ d->hotSpot = p1.screenPos();
+ d->isHotSpotSet = true;
+
+ if (d->isNewSequence) {
+ d->startPosition[0] = p1.screenPos();
+ d->startPosition[1] = p2.screenPos();
+ }
+ QLineF line(p1.screenPos(), p2.screenPos());
+ QLineF tmp(line);
+ tmp.setLength(line.length() / 2.);
+ QPointF centerPoint = tmp.p2();
+
+ d->lastCenterPoint = d->centerPoint;
+ d->centerPoint = centerPoint;
+ d->changeFlags |= QPinchGesture::CenterPointChanged;
+
+ const qreal scaleFactor =
+ QLineF(p1.screenPos(), p2.screenPos()).length()
+ / QLineF(d->startPosition[0], d->startPosition[1]).length();
+ if (d->isNewSequence) {
+ d->lastScaleFactor = scaleFactor;
+ } else {
+ d->lastScaleFactor = d->scaleFactor;
+ }
+ d->scaleFactor = scaleFactor;
+ d->totalScaleFactor += d->scaleFactor - d->lastScaleFactor;
+ d->changeFlags |= QPinchGesture::ScaleFactorChanged;
+
+ qreal angle = QLineF(p1.screenPos(), p2.screenPos()).angle();
+ if (angle > 180)
+ angle -= 360;
+ qreal startAngle = QLineF(p1.startScreenPos(), p2.startScreenPos()).angle();
+ if (startAngle > 180)
+ startAngle -= 360;
+ const qreal rotationAngle = startAngle - angle;
+ if (d->isNewSequence)
+ d->lastRotationAngle = rotationAngle;
+ else
+ d->lastRotationAngle = d->rotationAngle;
+ d->rotationAngle = rotationAngle;
+ d->totalRotationAngle += d->rotationAngle - d->lastRotationAngle;
+ d->changeFlags |= QPinchGesture::RotationAngleChanged;
+
+ d->totalChangeFlags |= d->changeFlags;
+ d->isNewSequence = false;
+ result = QGestureRecognizer::TriggerGesture;
+ } else {
+ d->isNewSequence = true;
+ if (q->state() == Qt::NoGesture)
+ result = QGestureRecognizer::Ignore;
+ else
+ result = QGestureRecognizer::FinishGesture;
+ }
+ break;
+ }
+ case QEvent::MouseButtonPress:
+ case QEvent::MouseMove:
+ case QEvent::MouseButtonRelease:
+ result = QGestureRecognizer::Ignore;
+ break;
+ default:
+ result = QGestureRecognizer::Ignore;
+ break;
+ }
+ return result;
+}
+
+void QPinchGestureRecognizer::reset(QGesture *state)
+{
+ QPinchGesture *pinch = static_cast<QPinchGesture *>(state);
+ QPinchGesturePrivate *d = pinch->d_func();
+
+ d->totalChangeFlags = d->changeFlags = 0;
+
+ d->startCenterPoint = d->lastCenterPoint = d->centerPoint = QPointF();
+ d->totalScaleFactor = d->lastScaleFactor = d->scaleFactor = 0;
+ d->totalRotationAngle = d->lastRotationAngle = d->rotationAngle = 0;
+
+ d->isNewSequence = true;
+ d->startPosition[0] = d->startPosition[1] = QPointF();
QGestureRecognizer::reset(state);
}
-/*! \internal */
-/*
-bool QPanGestureRecognizer::event(QEvent *event)
+//
+// QSwipeGestureRecognizer
+//
+
+QSwipeGestureRecognizer::QSwipeGestureRecognizer()
+{
+}
+
+QGesture *QSwipeGestureRecognizer::create(QObject *target)
{
-#if defined(QT_MAC_USE_COCOA)
- Q_D(QPanGesture);
- if (event->type() == QEvent::Timer) {
- const QTimerEvent *te = static_cast<QTimerEvent *>(event);
- if (te->timerId() == d->singleTouchPanTimer.timerId()) {
- d->singleTouchPanTimer.stop();
- updateState(Qt::GestureStarted);
- }
+ if (target && target->isWidgetType()) {
+ static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);
}
-#endif
-
- bool consume = false;
+ return new QSwipeGesture;
+}
-#if defined(Q_WS_WIN)
-#elif defined(QT_MAC_USE_COCOA)
- // The following implements single touch
- // panning on Mac:
- const int panBeginDelay = 300;
- const int panBeginRadius = 3;
- const QTouchEvent *ev = static_cast<const QTouchEvent*>(event);
+QGestureRecognizer::Result QSwipeGestureRecognizer::recognize(QGesture *state,
+ QObject *,
+ QEvent *event)
+{
+ QSwipeGesture *q = static_cast<QSwipeGesture *>(state);
+ QSwipeGesturePrivate *d = q->d_func();
+
+ const QTouchEvent *ev = static_cast<const QTouchEvent *>(event);
+
+ QGestureRecognizer::Result result;
switch (event->type()) {
case QEvent::TouchBegin: {
- if (ev->touchPoints().size() == 1) {
- d->delayManager->setEnabled(true);
- consume = d->delayManager->append(d->gestureTarget, *event);
- d->lastPosition = QCursor::pos();
- d->singleTouchPanTimer.start(panBeginDelay, this);
- }
- break;}
+ d->speed = 1;
+ d->time = QTime::currentTime();
+ d->started = true;
+ result = QGestureRecognizer::MayBeGesture;
+ break;
+ }
case QEvent::TouchEnd: {
- d->delayManager->setEnabled(false);
- if (state() != Qt::NoGesture) {
- updateState(Qt::GestureFinished);
- consume = true;
- d->delayManager->clear();
+ if (q->state() != Qt::NoGesture) {
+ result = QGestureRecognizer::FinishGesture;
} else {
- d->delayManager->replay();
+ result = QGestureRecognizer::CancelGesture;
}
- reset();
- break;}
+ break;
+ }
case QEvent::TouchUpdate: {
- consume = d->delayManager->append(d->gestureTarget, *event);
- if (ev->touchPoints().size() == 1) {
- if (state() == Qt::NoGesture) {
- // INVARIANT: The singleTouchTimer has still not fired.
- // Lets check if the user moved his finger so much from
- // the starting point that it makes sense to cancel:
- const QPointF startPos = ev->touchPoints().at(0).startPos().toPoint();
- const QPointF p = ev->touchPoints().at(0).pos().toPoint();
- if ((startPos - p).manhattanLength() > panBeginRadius) {
- d->delayManager->replay();
- consume = false;
- reset();
- } else {
- d->lastPosition = QCursor::pos();
+ if (!d->started)
+ result = QGestureRecognizer::CancelGesture;
+ else if (ev->touchPoints().size() == 3) {
+ QTouchEvent::TouchPoint p1 = ev->touchPoints().at(0);
+ QTouchEvent::TouchPoint p2 = ev->touchPoints().at(1);
+ QTouchEvent::TouchPoint p3 = ev->touchPoints().at(2);
+
+ if (d->lastPositions[0].isNull()) {
+ d->lastPositions[0] = p1.startScreenPos().toPoint();
+ d->lastPositions[1] = p2.startScreenPos().toPoint();
+ d->lastPositions[2] = p3.startScreenPos().toPoint();
+ }
+ d->hotSpot = p1.screenPos();
+ d->isHotSpotSet = true;
+
+ int xDistance = (p1.screenPos().x() - d->lastPositions[0].x() +
+ p2.screenPos().x() - d->lastPositions[1].x() +
+ p3.screenPos().x() - d->lastPositions[2].x()) / 3;
+ int yDistance = (p1.screenPos().y() - d->lastPositions[0].y() +
+ p2.screenPos().y() - d->lastPositions[1].y() +
+ p3.screenPos().y() - d->lastPositions[2].y()) / 3;
+
+ const int distance = xDistance >= yDistance ? xDistance : yDistance;
+ int elapsedTime = d->time.msecsTo(QTime::currentTime());
+ if (!elapsedTime)
+ elapsedTime = 1;
+ d->speed = 0.9 * d->speed + distance / elapsedTime;
+ d->time = QTime::currentTime();
+ d->swipeAngle = QLineF(p1.startScreenPos(), p1.screenPos()).angle();
+
+ static const int MoveThreshold = 50;
+ if (xDistance > MoveThreshold || yDistance > MoveThreshold) {
+ // measure the distance to check if the direction changed
+ d->lastPositions[0] = p1.screenPos().toPoint();
+ d->lastPositions[1] = p2.screenPos().toPoint();
+ d->lastPositions[2] = p3.screenPos().toPoint();
+ QSwipeGesture::SwipeDirection horizontal =
+ xDistance > 0 ? QSwipeGesture::Right : QSwipeGesture::Left;
+ QSwipeGesture::SwipeDirection vertical =
+ yDistance > 0 ? QSwipeGesture::Down : QSwipeGesture::Up;
+ if (d->verticalDirection == QSwipeGesture::NoDirection)
+ d->verticalDirection = vertical;
+ if (d->horizontalDirection == QSwipeGesture::NoDirection)
+ d->horizontalDirection = horizontal;
+ if (d->verticalDirection != vertical || d->horizontalDirection != horizontal) {
+ // the user has changed the direction!
+ result = QGestureRecognizer::CancelGesture;
}
+ result = QGestureRecognizer::TriggerGesture;
} else {
- d->delayManager->clear();
- QPointF mousePos = QCursor::pos();
- QPointF dist = mousePos - d->lastPosition;
- d->lastPosition = mousePos;
- d->lastOffset = d->offset;
- d->offset = QSizeF(dist.x(), dist.y());
- d->totalOffset += d->offset;
- updateState(Qt::GestureUpdated);
+ if (q->state() != Qt::NoGesture)
+ result = QGestureRecognizer::TriggerGesture;
+ else
+ result = QGestureRecognizer::MayBeGesture;
}
- } else if (state() == Qt::NoGesture) {
- d->delayManager->replay();
- consume = false;
- reset();
+ } else if (ev->touchPoints().size() > 3) {
+ result = QGestureRecognizer::CancelGesture;
+ } else { // less than 3 touch points
+ if (d->started && (ev->touchPointStates() & Qt::TouchPointPressed))
+ result = QGestureRecognizer::CancelGesture;
+ else if (d->started)
+ result = QGestureRecognizer::Ignore;
+ else
+ result = QGestureRecognizer::MayBeGesture;
}
- break;}
+ break;
+ }
case QEvent::MouseButtonPress:
case QEvent::MouseMove:
case QEvent::MouseButtonRelease:
- if (d->delayManager->isEnabled())
- consume = d->delayManager->append(d->gestureTarget, *event);
+ result = QGestureRecognizer::Ignore;
+ break;
+ default:
+ result = QGestureRecognizer::Ignore;
+ break;
+ }
+ return result;
+}
+
+void QSwipeGestureRecognizer::reset(QGesture *state)
+{
+ QSwipeGesture *q = static_cast<QSwipeGesture *>(state);
+ QSwipeGesturePrivate *d = q->d_func();
+
+ d->verticalDirection = d->horizontalDirection = QSwipeGesture::NoDirection;
+ d->swipeAngle = 0;
+
+ d->lastPositions[0] = d->lastPositions[1] = d->lastPositions[2] = QPoint();
+ d->started = false;
+ d->speed = 0;
+ d->time = QTime();
+
+ QGestureRecognizer::reset(state);
+}
+
+//
+// QTapGestureRecognizer
+//
+
+QTapGestureRecognizer::QTapGestureRecognizer()
+{
+}
+
+QGesture *QTapGestureRecognizer::create(QObject *target)
+{
+ if (target && target->isWidgetType()) {
+ static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);
+ }
+ return new QTapGesture;
+}
+
+QGestureRecognizer::Result QTapGestureRecognizer::recognize(QGesture *state,
+ QObject *,
+ QEvent *event)
+{
+ QTapGesture *q = static_cast<QTapGesture *>(state);
+ QTapGesturePrivate *d = q->d_func();
+
+ const QTouchEvent *ev = static_cast<const QTouchEvent *>(event);
+
+ QGestureRecognizer::Result result = QGestureRecognizer::CancelGesture;
+
+ switch (event->type()) {
+ case QEvent::TouchBegin: {
+ d->position = ev->touchPoints().at(0).pos();
+ result = QGestureRecognizer::TriggerGesture;
+ break;
+ }
+ case QEvent::TouchUpdate:
+ case QEvent::TouchEnd: {
+ if (q->state() != Qt::NoGesture && ev->touchPoints().size() == 1) {
+ QTouchEvent::TouchPoint p = ev->touchPoints().at(0);
+ QPoint delta = p.pos().toPoint() - p.startPos().toPoint();
+ enum { TapRadius = 40 };
+ if (delta.manhattanLength() <= TapRadius) {
+ if (event->type() == QEvent::TouchEnd)
+ result = QGestureRecognizer::FinishGesture;
+ else
+ result = QGestureRecognizer::TriggerGesture;
+ }
+ }
+ break;
+ }
+ case QEvent::MouseButtonPress:
+ case QEvent::MouseMove:
+ case QEvent::MouseButtonRelease:
+ result = QGestureRecognizer::Ignore;
break;
default:
- return false;
+ result = QGestureRecognizer::Ignore;
+ break;
+ }
+ return result;
+}
+
+void QTapGestureRecognizer::reset(QGesture *state)
+{
+ QTapGesture *q = static_cast<QTapGesture *>(state);
+ QTapGesturePrivate *d = q->d_func();
+
+ d->position = QPointF();
+
+ QGestureRecognizer::reset(state);
+}
+
+//
+// QTapAndHoldGestureRecognizer
+//
+
+QTapAndHoldGestureRecognizer::QTapAndHoldGestureRecognizer()
+{
+}
+
+QGesture *QTapAndHoldGestureRecognizer::create(QObject *target)
+{
+ if (target && target->isWidgetType()) {
+ static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);
+ }
+ return new QTapAndHoldGesture;
+}
+
+QGestureRecognizer::Result
+QTapAndHoldGestureRecognizer::recognize(QGesture *state, QObject *object,
+ QEvent *event)
+{
+ QTapAndHoldGesture *q = static_cast<QTapAndHoldGesture *>(state);
+ QTapAndHoldGesturePrivate *d = q->d_func();
+
+ if (object == state && event->type() == QEvent::Timer) {
+ q->killTimer(d->timerId);
+ d->timerId = 0;
+ return QGestureRecognizer::Ignore | QGestureRecognizer::ConsumeEventHint;
}
-#else
- Q_UNUSED(event);
-#endif
- return QGestureRecognizer::Ignore;
+
+ const QTouchEvent *ev = static_cast<const QTouchEvent *>(event);
+
+ QGestureRecognizer::Result result = QGestureRecognizer::CancelGesture;
+
+ enum { TimerInterval = 2000 };
+ enum { TapRadius = 40 };
+
+ switch (event->type()) {
+ case QEvent::TouchBegin:
+ d->position = ev->touchPoints().at(0).pos();
+ if (d->timerId)
+ q->killTimer(d->timerId);
+ d->timerId = q->startTimer(TimerInterval);
+ result = QGestureRecognizer::TriggerGesture;
+ break;
+ case QEvent::TouchEnd:
+ if (d->timerId)
+ result = QGestureRecognizer::CancelGesture;
+ else
+ result = QGestureRecognizer::FinishGesture;
+ break;
+ case QEvent::TouchUpdate:
+ if (q->state() != Qt::NoGesture && ev->touchPoints().size() == 1) {
+ QTouchEvent::TouchPoint p = ev->touchPoints().at(0);
+ QPoint delta = p.pos().toPoint() - p.startPos().toPoint();
+ if (delta.manhattanLength() <= TapRadius)
+ result = QGestureRecognizer::TriggerGesture;
+ }
+ break;
+ case QEvent::MouseButtonPress:
+ case QEvent::MouseMove:
+ case QEvent::MouseButtonRelease:
+ result = QGestureRecognizer::Ignore;
+ break;
+ default:
+ result = QGestureRecognizer::Ignore;
+ break;
+ }
+ return result;
}
- */
+
+void QTapAndHoldGestureRecognizer::reset(QGesture *state)
+{
+ QTapAndHoldGesture *q = static_cast<QTapAndHoldGesture *>(state);
+ QTapAndHoldGesturePrivate *d = q->d_func();
+
+ d->position = QPointF();
+ if (d->timerId)
+ q->killTimer(d->timerId);
+ d->timerId = 0;
+
+ QGestureRecognizer::reset(state);
+}
QT_END_NAMESPACE