bool TouchExtensionGlobal::postTouchEvent(QTouchEvent *event, QWaylandView *view)
{
const QList<QTouchEvent::TouchPoint> points = event->touchPoints();
const int pointCount = points.count();
if (!pointCount)
return false;
wl_client *surfaceClient = view->surface()->client()->client();
uint32_t time = m_compositor->currentTimeMsecs();
const int rescount = m_resources.count();
for (int res = 0; res < rescount; ++res) {
Resource *target = m_resources.at(res);
if (target->client() != surfaceClient)
continue;
// We will use no touch_frame type of event, to reduce the number of
// events flowing through the wire. Instead, the number of points sent is
// included in the touch point events.
int sentPointCount = 0;
for (int i = 0; i < pointCount; ++i) {
if (points.at(i).state() != Qt::TouchPointStationary)
++sentPointCount;
}
for (int i = 0; i < pointCount; ++i) {
const QTouchEvent::TouchPoint &tp(points.at(i));
// Stationary points are never sent. They are cached on client side.
if (tp.state() == Qt::TouchPointStationary)
continue;
uint32_t id = tp.id();
uint32_t state = (tp.state() & 0xFFFF) | (sentPointCount << 16);
uint32_t flags = (tp.flags() & 0xFFFF) | (int(event->device()->capabilities()) << 16);
int x = toFixed(tp.pos().x());
int y = toFixed(tp.pos().y());
int nx = toFixed(tp.normalizedPos().x());
int ny = toFixed(tp.normalizedPos().y());
int w = toFixed(tp.rect().width());
int h = toFixed(tp.rect().height());
int vx = toFixed(tp.velocity().x());
int vy = toFixed(tp.velocity().y());
uint32_t pressure = uint32_t(tp.pressure() * 255);
QByteArray rawData;
QVector<QPointF> rawPosList = tp.rawScreenPositions();
int rawPosCount = rawPosList.count();
if (rawPosCount) {
rawPosCount = qMin(maxRawPos, rawPosCount);
QVector<float>::iterator iter = m_posData.begin();
for (int rpi = 0; rpi < rawPosCount; ++rpi) {
const QPointF &rawPos(rawPosList.at(rpi));
// This will stay in screen coordinates for performance
// reasons, clients using this data will presumably know
// what they are doing.
*iter++ = static_cast<float>(rawPos.x());
*iter++ = static_cast<float>(rawPos.y());
}
rawData = QByteArray::fromRawData(reinterpret_cast<const char*>(m_posData.constData()), sizeof(float) * rawPosCount * 2);
}
send_touch(target->handle,
time, id, state,
x, y, nx, ny, w, h,
pressure, vx, vy,
flags, rawData);
}
return true;
}
return false;
}
