void GestureRecognizer::pinchGesture(WKTouchEventRef eventRef)
{
WKArrayRef touchPoints = WKTouchEventGetTouchPoints(eventRef);
size_t numberOfTouchPoints = WKArrayGetSize(touchPoints);
ASSERT(numberOfTouchPoints >= 2);
switch (WKTouchEventGetType(eventRef)) {
case kWKEventTypeTouchMove: {
m_gestureHandler->handlePinch(createVectorWithWKArray(touchPoints, 2));
break;
}
case kWKEventTypeTouchEnd:
if (numberOfTouchPoints == 2) {
m_gestureHandler->handlePinchFinished();
m_recognizerFunction = &GestureRecognizer::panGesture;
WKTouchPointRef pointRef;
for (size_t i = 0; i < numberOfTouchPoints; ++i) {
pointRef = static_cast<WKTouchPointRef>(WKArrayGetItemAtIndex(touchPoints, i));
WKTouchPointState state = WKTouchPointGetState(pointRef);
if (state != kWKTouchPointStateTouchReleased && state != kWKTouchPointStateTouchCancelled)
break;
}
ASSERT(pointRef);
m_gestureHandler->handlePanStarted(toIntPoint(WKTouchPointGetPosition(pointRef)));
}
break;
case kWKEventTypeTouchStart:
break;
default:
ASSERT_NOT_REACHED();
break;
}
}
void GestureRecognizer::noGesture(WKTouchEventRef eventRef)
{
switch (WKTouchEventGetType(eventRef)) {
case kWKEventTypeTouchStart: {
WKArrayRef touchPoints = WKTouchEventGetTouchPoints(eventRef);
switch (WKArrayGetSize(touchPoints)) {
case 1:
m_gestureHandler->reset();
m_recognizerFunction = &GestureRecognizer::singleTapGesture;
m_firstPressedPoint = toIntPoint(getPointAtIndex(touchPoints, 0));
ASSERT(!m_tapAndHoldTimer);
m_tapAndHoldTimer = ecore_timer_add(s_tapAndHoldTimeoutInSeconds, tapAndHoldTimerCallback, this);
m_doubleTapTimer = ecore_timer_add(s_doubleTapTimeoutInSeconds, doubleTapTimerCallback, this);
break;
case 2:
m_recognizerFunction = &GestureRecognizer::pinchGesture;
m_gestureHandler->handlePinchStarted(createVectorWithWKArray(touchPoints, 2));
break;
default:
// There's no defined gesture when we touch three or more points.
notImplemented();
break;
}
break;
}
case kWKEventTypeTouchMove:
case kWKEventTypeTouchEnd:
break;
default:
ASSERT_NOT_REACHED();
break;
}
}
void GestureRecognizer::processTouchEvent(WKTouchEventRef eventRef)
{
WKEventType type = WKTouchEventGetType(eventRef);
if (type == kWKEventTypeTouchCancel) {
reset();
return;
}
(this->*m_recognizerFunction)(type, WKTouchEventGetTouchPoints(eventRef));
}
void GestureRecognizer::noGesture(WKTouchEventRef eventRef)
{
switch (WKTouchEventGetType(eventRef)) {
case kWKEventTypeTouchStart:
m_gestureHandler->reset();
m_recognizerFunction = &GestureRecognizer::singleTapGesture;
m_firstPressedPoint = toIntPoint(getPointAtIndex(WKTouchEventGetTouchPoints(eventRef), 0));
ASSERT(!m_tapAndHoldTimer);
m_tapAndHoldTimer = ecore_timer_add(s_tapAndHoldTimeoutInSeconds, tapAndHoldTimerCallback, this);
m_doubleTapTimer = ecore_timer_add(s_doubleTapTimeoutInSeconds, doubleTapTimerCallback, this);
break;
case kWKEventTypeTouchMove:
case kWKEventTypeTouchEnd:
break;
default:
ASSERT_NOT_REACHED();
break;
}
}
void GestureRecognizer::panGesture(WKTouchEventRef eventRef)
{
WKArrayRef touchPoints = WKTouchEventGetTouchPoints(eventRef);
switch (WKTouchEventGetType(eventRef)) {
case kWKEventTypeTouchStart:
m_recognizerFunction = &GestureRecognizer::pinchGesture;
m_gestureHandler->handlePinchStarted(createVectorWithWKArray(touchPoints, 2));
break;
case kWKEventTypeTouchMove:
m_gestureHandler->handlePan(toIntPoint(getPointAtIndex(touchPoints, 0)), WKTouchEventGetTimestamp(eventRef));
break;
case kWKEventTypeTouchEnd:
m_gestureHandler->handlePanFinished();
m_recognizerFunction = &GestureRecognizer::noGesture;
break;
default:
ASSERT_NOT_REACHED();
break;
}
}
void GestureRecognizer::doubleTapGesture(WKTouchEventRef eventRef)
{
WKArrayRef touchPoints = WKTouchEventGetTouchPoints(eventRef);
switch (WKTouchEventGetType(eventRef)) {
case kWKEventTypeTouchStart: {
if (m_doubleTapTimer) {
ecore_timer_del(m_doubleTapTimer);
m_doubleTapTimer = 0;
}
size_t numberOfTouchPoints = WKArrayGetSize(touchPoints);
if (numberOfTouchPoints == 1) {
if (exceedsDoubleTapThreshold(m_firstPressedPoint, toIntPoint(getPointAtIndex(touchPoints, 0))))
m_recognizerFunction = &GestureRecognizer::singleTapGesture;
} else {
m_recognizerFunction = &GestureRecognizer::pinchGesture;
m_gestureHandler->handlePinchStarted(createVectorWithWKArray(touchPoints, 2));
}
break;
}
case kWKEventTypeTouchMove: {
IntPoint currentPoint = toIntPoint(getPointAtIndex(touchPoints, 0));
if (exceedsPanThreshold(m_firstPressedPoint, currentPoint)) {
m_recognizerFunction = &GestureRecognizer::panGesture;
m_gestureHandler->handlePanStarted(currentPoint);
}
break;
}
case kWKEventTypeTouchEnd:
m_gestureHandler->handleDoubleTap(m_firstPressedPoint);
m_recognizerFunction = &GestureRecognizer::noGesture;
break;
default:
ASSERT_NOT_REACHED();
break;
}
}