// from bool QApplicationPrivate::translateTouchEvent()
bool QWindowsMouseHandler::translateTouchEvent(QWindow *window, HWND,
QtWindows::WindowsEventType,
MSG msg, LRESULT *)
{
#ifndef Q_OS_WINCE
typedef QWindowSystemInterface::TouchPoint QTouchPoint;
typedef QList<QWindowSystemInterface::TouchPoint> QTouchPointList;
const QRect screenGeometry = window->screen()->geometry();
const int winTouchPointCount = msg.wParam;
QScopedArrayPointer<TOUCHINPUT> winTouchInputs(new TOUCHINPUT[winTouchPointCount]);
memset(winTouchInputs.data(), 0, sizeof(TOUCHINPUT) * winTouchPointCount);
QTouchPointList touchPoints;
touchPoints.reserve(winTouchPointCount);
Qt::TouchPointStates allStates = 0;
Q_ASSERT(QWindowsContext::user32dll.getTouchInputInfo);
QWindowsContext::user32dll.getTouchInputInfo((HANDLE) msg.lParam, msg.wParam, winTouchInputs.data(), sizeof(TOUCHINPUT));
for (int i = 0; i < winTouchPointCount; ++i) {
const TOUCHINPUT &winTouchInput = winTouchInputs[i];
QTouchPoint touchPoint;
touchPoint.pressure = 1.0;
touchPoint.id = m_touchInputIDToTouchPointID.value(winTouchInput.dwID, -1);
if (touchPoint.id == -1) {
touchPoint.id = m_touchInputIDToTouchPointID.size();
m_touchInputIDToTouchPointID.insert(winTouchInput.dwID, touchPoint.id);
}
QPointF screenPos = QPointF(qreal(winTouchInput.x) / qreal(100.), qreal(winTouchInput.y) / qreal(100.));
if (winTouchInput.dwMask & TOUCHINPUTMASKF_CONTACTAREA)
touchPoint.area.setSize(QSizeF(qreal(winTouchInput.cxContact) / qreal(100.),
qreal(winTouchInput.cyContact) / qreal(100.)));
touchPoint.area.moveCenter(screenPos);
if (winTouchInput.dwFlags & TOUCHEVENTF_DOWN) {
touchPoint.state = Qt::TouchPointPressed;
} else if (winTouchInput.dwFlags & TOUCHEVENTF_UP) {
touchPoint.state = Qt::TouchPointReleased;
} else {
// TODO: Previous code checked"
// screenPos == touchPoint.normalPosition -> Qt::TouchPointStationary, but
// but touchPoint.normalPosition was never initialized?
touchPoint.state = touchPoint.state;
}
touchPoint.normalPosition = QPointF(screenPos.x() / screenGeometry.width(),
screenPos.y() / screenGeometry.height());
allStates |= touchPoint.state;
touchPoints.append(touchPoint);
}
QWindowsContext::user32dll.closeTouchInputHandle((HANDLE) msg.lParam);
// all touch points released, forget the ids we've seen, they may not be reused
if (allStates == Qt::TouchPointReleased)
m_touchInputIDToTouchPointID.clear();
if (!m_touchDevice) {
m_touchDevice = new QTouchDevice;
// TODO: Device used to be hardcoded to screen in previous code.
m_touchDevice->setType(QTouchDevice::TouchScreen);
m_touchDevice->setCapabilities(QTouchDevice::Position | QTouchDevice::Area | QTouchDevice::NormalizedPosition);
QWindowSystemInterface::registerTouchDevice(m_touchDevice);
}
QWindowSystemInterface::handleTouchEvent(window,
m_touchDevice,
touchPoints);
return true;
#else
return false;
#endif
}
// from bool QApplicationPrivate::translateTouchEvent()
bool QWindowsMouseHandler::translateTouchEvent(QWindow *window, HWND,
QtWindows::WindowsEventType,
MSG msg, LRESULT *)
{
typedef QWindowSystemInterface::TouchPoint QTouchPoint;
typedef QList<QWindowSystemInterface::TouchPoint> QTouchPointList;
if (!QWindowsContext::instance()->initTouch()) {
qWarning("Unable to initialize touch handling.");
return true;
}
const QScreen *screen = window->screen();
if (!screen)
screen = QGuiApplication::primaryScreen();
if (!screen)
return true;
const QRect screenGeometry = screen->geometry();
const int winTouchPointCount = int(msg.wParam);
QScopedArrayPointer<TOUCHINPUT> winTouchInputs(new TOUCHINPUT[winTouchPointCount]);
memset(winTouchInputs.data(), 0, sizeof(TOUCHINPUT) * size_t(winTouchPointCount));
QTouchPointList touchPoints;
touchPoints.reserve(winTouchPointCount);
Qt::TouchPointStates allStates = 0;
QWindowsContext::user32dll.getTouchInputInfo(reinterpret_cast<HANDLE>(msg.lParam),
UINT(msg.wParam),
winTouchInputs.data(), sizeof(TOUCHINPUT));
for (int i = 0; i < winTouchPointCount; ++i) {
const TOUCHINPUT &winTouchInput = winTouchInputs[i];
int id = m_touchInputIDToTouchPointID.value(winTouchInput.dwID, -1);
if (id == -1) {
id = m_touchInputIDToTouchPointID.size();
m_touchInputIDToTouchPointID.insert(winTouchInput.dwID, id);
}
QTouchPoint touchPoint;
touchPoint.pressure = 1.0;
touchPoint.id = id;
if (m_lastTouchPositions.contains(id))
touchPoint.normalPosition = m_lastTouchPositions.value(id);
const QPointF screenPos = QPointF(winTouchInput.x, winTouchInput.y) / qreal(100.);
if (winTouchInput.dwMask & TOUCHINPUTMASKF_CONTACTAREA)
touchPoint.area.setSize(QSizeF(winTouchInput.cxContact, winTouchInput.cyContact) / qreal(100.));
touchPoint.area.moveCenter(screenPos);
QPointF normalPosition = QPointF(screenPos.x() / screenGeometry.width(),
screenPos.y() / screenGeometry.height());
const bool stationaryTouchPoint = (normalPosition == touchPoint.normalPosition);
touchPoint.normalPosition = normalPosition;
if (winTouchInput.dwFlags & TOUCHEVENTF_DOWN) {
touchPoint.state = Qt::TouchPointPressed;
m_lastTouchPositions.insert(id, touchPoint.normalPosition);
} else if (winTouchInput.dwFlags & TOUCHEVENTF_UP) {
touchPoint.state = Qt::TouchPointReleased;
m_lastTouchPositions.remove(id);
} else {
touchPoint.state = (stationaryTouchPoint
? Qt::TouchPointStationary
: Qt::TouchPointMoved);
m_lastTouchPositions.insert(id, touchPoint.normalPosition);
}
allStates |= touchPoint.state;
touchPoints.append(touchPoint);
}
QWindowsContext::user32dll.closeTouchInputHandle(reinterpret_cast<HANDLE>(msg.lParam));
// all touch points released, forget the ids we've seen, they may not be reused
if (allStates == Qt::TouchPointReleased)
m_touchInputIDToTouchPointID.clear();
QWindowSystemInterface::handleTouchEvent(window,
m_touchDevice,
touchPoints,
QWindowsKeyMapper::queryKeyboardModifiers());
return true;
}
