private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (DeviceHandle != -1)
{
synDev.SetLongProperty(SynDeviceProperty.SP_DisableState, oldDisableState);
synDev.Unacquire();
}
}
public void StopTouchCapture()
{
EnsureNotDisposed();
if (!_acquired)
{
return;
}
_device.OnPacket -= OnDevicePacket;
_device.Unacquire();
_acquired = false;
if (_touching)
{
TouchEnded?.Invoke(this, EventArgs.Empty);
_touching = false;
}
}
/* Event handler for Synaptics API touch events */
void SynDevCtrl_OnPacket()
{
SynPacketCtrl SynPacCtrl = new SynPacketCtrl();
SynDevCtrl.LoadPacket(SynPacCtrl);
if (SynPacCtrl.GetLongProperty(SynPacketProperty.SP_ExtraFingerState) == 2)
{
isMultitouch = true;
}
else if (SynPacCtrl.GetLongProperty(SynPacketProperty.SP_ExtraFingerState) == 1)
{
isMultitouch = false;
}
else if (SynPacCtrl.GetLongProperty(SynPacketProperty.SP_ExtraFingerState) == 0)
{
isMultitouch = false;
}
// 8 is a "magic number" made through testing. It specifies the boundary for a "normal" finger width.
// This should probably be configurable in the future.
if ((SynPacCtrl.W > 8) || isMultitouch)
{
// Width is higher than normal. We probably have two fingers on the touchpad.
// OR We actually found a native multitouch!
// Disable touchpad input to the OS.
// We will be exclusively handling the touchpad during these events.
// Native multitouch caveat! Native two-finger scrolling WILL compete with this.
// Disable it if you prever MultiTouchEnabler's scrolling.
// Todo.. This is for coexisting nicely with native multitouch non-scrolling gestures.
/*if (SynPacCtrl.GetLongProperty(SynPacketProperty.SP_ExtraFingerState) == 2)
* {
* //Check space between fingers. We don't want to interfere with other gestures...
* if (SynPacCtrl.XMickeys > 5)
* {
* if (isExclusivityAcquired)
* SynDevCtrl.Unacquire();
* isExclusivityAcquired = false;
* gestureMode = 1;
* }
*
* }*/
if (!isExclusivityAcquired && gestureMode == 0)
{
try
{
// This gives us exclusive control of the touchpad.
// Other software, like the OS, will not recieve the touch events.
SynDevCtrl.Acquire(0);
isExclusivityAcquired = true;
}
catch
{
// This might happen sometimes. It's okay.
isExclusivityAcquired = false;
}
}
if (gestureMode == 0)
{
// Scroll the mouse!
// Use the user-defined scroll speed factor and the inversion setting to determine the scroll amount
mouse_event(2048, 0, 0, SynPacCtrl.YMickeys * scrollSpeed * scrollInversion, GetMessageExtraInfo());
}
else
{
gestureMode = 1;
}
}
else
{
// We need to relinquish exclusivity of the touchpad.
if (isExclusivityAcquired)
{
SynDevCtrl.Unacquire();
}
isExclusivityAcquired = false;
}
// We build up a lot of memory usage if we let this go on normally
// Force the Garbage Collector to do its job!
SynPacCtrl = null;
GC.Collect();
GC.WaitForPendingFinalizers();
}
