Fix touchpad clicks and cursor movement in Passthru mode when switching profiles

[POD-io]

Fixes this issue: #87

Problem

When using a DualSense controller in Passthru touchpad mode, if the user switches profiles with touchpad, the touch state flags persist across the profile change. This causes unwanted mouse clicks and cursor movement to be generated when the profile switches to a mode that uses mouse simulation.

Root Cause

The leftDown touch flag is set when the touch begins in Passthru mode. When a profile switch occurs during the touch, the new profile's touchpad mode processes the ongoing touch event. Since synthesizeMouseButtons() only checks the current mode (touchpadOutputMode == TouchpadOutMode.Passthru), it doesn't know the touch originated in Passthru mode and generates a click.

Solution

Added a touchStartedInPassthru flag to track the touchpad mode when a touch begins. This flag:

• Is set to true when touch activates in Passthru mode
• Persists across profile switches during the touch
• Prevents click generation and cursor movement in synthesizeMouseButtons() and touchesMoved()
• Is reset when the touch ends in TouchButtonUpFlags()

This preserves the original intent: touches that start in Passthru mode should never generate mouse simulation, regardless of profile changes.

Changes

• File Modified: DS4Windows/DS4Control/Mouse.cs
  • Added touchStartedInPassthru field declaration (~line 47)
  • Modified TouchButtonUpFlags() to reset flag on touch end (~line 1661)
  • Modified TouchButtonCheckProcess() to set flag when touch activates in Passthru mode (~line 1782)
  • Modified synthesizeMouseButtons() to prevent clicks when flag is set (~line 1826)
  • Modified touchesMoved() Mouse mode section to prevent cursor movement when flag is set (~line 1107)
  • Modified touchesMoved() AbsoluteMouse mode section to prevent cursor movement when flag is set (~line 1161)

Testing

• Touch detection still works for hotkeys (touch flags are set correctly)
• No clicks generated when touch starts in Passthru mode and profile switches
• No cursor movement when touch starts in Passthru mode and profile switches
• Normal clicking and cursor movement in non-Passthru modes unaffected
• Profile switching during touch works correctly in all modes