7inch Capative Touch LCD

/*********************************************************************
*
*       PID_X_Exec
*/
static void PID_X_Exec(void) {
  TS_StateTypeDef      TS_State = {0};
  static GUI_PID_STATE StatePID;
  static int           IsTouched;
  int                  IsMirrorX;
  int                  IsMirrorY;
  int                  xSize;
  int                  ySize;


  if (_IsInitialized) {
    BSP_TS_GetState(&TS_State);         // Read touch input
    StatePID.Layer = _LayerIndex;
    if (TS_State.touchDetected) {       // If touch detected, set up pid statte structure
      IsTouched = 1;                    // Remember that last even has been touch down
      StatePID.Pressed = 1;             // Pressed, "down event"
      //
      // Get some information about the display orientation and its size
      //
      IsMirrorX = LCD_GetMirrorX();
      IsMirrorY = LCD_GetMirrorY();
      xSize     = LCD_GetXSize();    // Depending on the orientation these values are swapped.
      ySize     = LCD_GetYSize();    // Previous x size will y size vice versa


      if (LCD_GetSwapXYEx(_LayerIndex)) {
        //
        // If an axis is mirrored we have to suptract the input from the given axis, be aware that
        // the axis values might be swapped. That's why we use ySize for x and xSize for y...
        //
        StatePID.y = (IsMirrorX) ? ySize - TS_State.touchX[0] : TS_State.touchX[0];  // XY swapped, use x coordinates (ySize is formaer xSize) for the y coordinate
        StatePID.x = (IsMirrorY) ? xSize - TS_State.touchY[0] : TS_State.touchY[0];  // Same as above but for y
      } else {
        StatePID.x = (IsMirrorX) ? xSize - TS_State.touchX[0] : TS_State.touchX[0];  // Nothings swapped but maybe mirrored
        StatePID.y = (IsMirrorY) ? ySize - TS_State.touchY[0] : TS_State.touchY[0];
      }
      GUI_TOUCH_StoreStateEx(&StatePID);    // Pass information to emWin
    } else {
      if (IsTouched == 1) {                 // No touch detected but last event was touch down
        IsTouched = 0;                      // Restore IsTouched variable
        StatePID.Pressed = 0;               // Unpressed, "up event"
        GUI_TOUCH_StoreStateEx(&StatePID);  // Since StatePID is declared as static we use the x/y coordinate
                                            // from the down event to create an up event.
      }
    }
  }
}