// handler routine for timer1 to read the touch screen
void myTouchInt()
{
static bool inTouch = false;
if ((!inTouch)&&(myTouch.dataAvailable()))
{
inTouch = true;
myTouch.read();
xt = myTouch.getX();
yt = myTouch.getY();
ixt = xt; iyt = yt;
myScreen.ETouch.TrigOn(xt,yt);
}
if ((inTouch)&&(myTouch.dataAvailable()))
{
myTouch.read();
ixt = myTouch.getX();
iyt = myTouch.getY();
if ((ixt != xt)||(iyt != yt))
myScreen.ESlide.TrigOn(ixt,iyt);
}
if ((inTouch)&&(!myTouch.dataAvailable()))
{
inTouch = false;
myScreen.EunTouch.TrigOn(xt,yt);
}
myScreen.E100msecond.TrigOn();
}
void ECCalibrateScreen::SwaitForTouch()
{
while (myTouch.dataAvailable() == true)
{
myTouch.read();
}
while (myTouch.dataAvailable() == false) {}
while (myTouch.dataAvailable() == true)
{
myTouch.read();
}
}
// Draw a spot and wait until the user touches it, returning the touch coordinates in tx and ty.
// The alternative X and Y locations are so that the caller can allow for the touch panel being possibly inverted.
void DoTouchCalib(PixelNumber x, PixelNumber y, PixelNumber altX, PixelNumber altY, bool wantY, uint16_t& rawRslt)
{
const PixelNumber touchCircleRadius = 8;
const PixelNumber touchCalibMaxError = 40;
lcd.setColor(touchSpotColour);
lcd.fillCircle(x, y, touchCircleRadius);
for (;;)
{
uint16_t tx, ty, rawX, rawY;
if (touch.read(tx, ty, &rawX, &rawY))
{
if ( (abs((int)tx - (int)x) <= touchCalibMaxError || abs((int)tx - (int)altX) <= touchCalibMaxError)
&& (abs((int)ty - (int)y) <= touchCalibMaxError || abs((int)ty - (int)altY) <= touchCalibMaxError)
)
{
TouchBeep();
rawRslt = (wantY) ? rawY : rawX;
break;
}
}
}
lcd.setColor(defaultBackColour);
lcd.fillCircle(x, y, touchCircleRadius);
}