Windows touch (surge-synthesizer#1461)

* When a "mouse" event was caused by a touch instead of the mouse, use touch-specific logic: 1) force the rate to be 1:1; 2) in Windows, don't try to reset the cursor (via. SetCursorPos), which is usually done to avoid the mouse bumping up against the edge of the screen.  These work together to allow touch to work as expected on Windows, while preserving existing mouse behavior.

* update vstgui subproject

src/common/gui/CCursorHidingControl.cpp

@@ -43,7 +43,7 @@ CMouseEventResult CCursorHidingControl::onMouseMoved(CPoint& where, const CButto
    double dy = where.y - _lastPos.y;
    _lastPos = where;
 
-   if (_isDetatched)
+   if (_isDetatched && !buttons.isTouch())
    {
       double scaling = getMouseDeltaScaling(where, buttons);
 
@@ -57,22 +57,15 @@ CMouseEventResult CCursorHidingControl::onMouseMoved(CPoint& where, const CButto
    onMouseMoveDelta(where, buttons, dx, dy);
 
 #if WINDOWS
-   if (_isDetatched)
+   if (_isDetatched && !buttons.isTouch())
    {
-      // test for touch. If we are in a touch screen this cursor reset seems like a messy flip. See #1443
-      int value = GetSystemMetrics(SM_DIGITIZER);
-      bool hasTouch = ( value & ( NID_INTEGRATED_TOUCH | NID_EXTERNAL_TOUCH ) ) ? true : false;
-
-      if (!hasTouch)
-      {
-         double ddx = where.x - _detachPos.x;
-         double ddy = where.y - _detachPos.y;
-         double d = sqrt(ddx * ddx + ddy * ddy);
-         if (d > 10 && SetCursorPos(_hideX, _hideY))
-         {
-            _lastPos = _detachPos;
-         }
-      }
+       double ddx = where.x - _detachPos.x;
+       double ddy = where.y - _detachPos.y;
+       double d = sqrt(ddx * ddx + ddy * ddy);
+       if (d > 10 && SetCursorPos(_hideX, _hideY))
+       {
+          _lastPos = _detachPos;
+       }
    }
 #endif
 

src/common/gui/CSurgeSlider.cpp

@@ -465,6 +465,9 @@ double CSurgeSlider::getMouseDeltaScaling(CPoint& where, const CButtonState& but
       break;
    }
 
+   if (buttons.isTouch())
+      rate = 1.0;
+
    if (buttons & kRButton)
       rate *= 0.1;
    if (buttons & kShift)