bool TouchInputHandler::handleImpl(GdkEvent* event)
{
XOJ_CHECK_TYPE(TouchInputHandler);
GdkEventSequence* sequence = gdk_event_get_event_sequence(event);
// Disallow multitouch
if (this->currentSequence && this->currentSequence != sequence)
{
return false;
}
if (event->type == GDK_TOUCH_BEGIN && this->currentSequence == nullptr)
{
this->currentSequence = sequence;
actionStart(event);
}
if (event->type == GDK_TOUCH_UPDATE)
{
actionMotion(event);
}
if (event->type == GDK_TOUCH_END || event->type == GDK_TOUCH_CANCEL)
{
actionEnd(event);
this->currentSequence = nullptr;
}
return false;
}
bool GtkTouchContextHelper::handleEvent(GdkEvent* touchEvent)
{
#ifndef GTK_API_VERSION_2
uint32_t sequence = GPOINTER_TO_UINT(gdk_event_get_event_sequence(touchEvent));
switch (touchEvent->type) {
case GDK_TOUCH_BEGIN: {
ASSERT(!m_touchEvents.contains(sequence));
GUniquePtr<GdkEvent> event(gdk_event_copy(touchEvent));
m_touchEvents.add(sequence, std::move(event));
break;
}
case GDK_TOUCH_UPDATE: {
auto it = m_touchEvents.find(sequence);
ASSERT(it != m_touchEvents.end());
it->value.reset(gdk_event_copy(touchEvent));
break;
}
case GDK_TOUCH_END:
ASSERT(m_touchEvents.contains(sequence));
m_touchEvents.remove(sequence);
break;
default:
return false;
}
#endif // GTK_API_VERSION_2
return true;
}