1) If I do a touch calib in debug mode and capture the calibration matrix, can it be "good enough" for other displays? I bought two and tested this and at least with these two, the calibration profiles seem to work.
private static void CalibrateTouchScreen()
{
byte[] calib=new byte[33]{0 ,0 ,3 ,0 ,33 ,0 ,5 ,229 ,192 ,0 ,0 ,1 ,128 ,174 ,6 ,50 ,80 ,255 ,255 ,133 ,0 ,0 ,7 ,133 ,128 ,148 ,104 ,208 ,64 ,255 ,177 ,35 ,14 }; // change to =null or new byte[0] to get initial calibration
if (calib != null && calib.Length > 0)
{
BasicTypeDeSerializerContext b = new BasicTypeDeSerializerContext(calib);
var matrix = new CalibrationMatrix();
matrix.Get(B);
Screen.SetTouchscreenCalibrationMatrix(matrix);
}
else
{
Screen.TouchscreenCalibration();
var matrix = Screen.GetTouchscreenCalibrationMatrix();
if (matrix != null)
{
BasicTypeSerializerContext b = new BasicTypeSerializerContext();
matrix.Put(B);
int x;
calib = b.GetBuffer(out x);
// break point here in debug mode and view calib
}
}
}
2) How do you poll for a touch event so you don't block your main thread? I tried
Screen.TouchscreenWaitForEvent(); Screen.Execute(Synchronicity.Asynchronous);
Which seems to work the very first time, but doesn't get any touch events after that.
static int CenterX=240/2;
static int CenterY=320/2;
static int CircleRadius = 240 / 4;
static BasicColor BottomColor=BasicColor.White;
static BasicColor TopColor=BasicColor.Green;
private static void ScreenTouched(object o, TouchEvent e)
{
if(BottomColor==BasicColor.White)
BottomColor=BasicColor.Blue;
else
BottomColor=BasicColor.White;
Screen.DrawCircleFilled(CenterX, CenterY+CircleRadius, CircleRadius, (ushort)BottomColor);
}
public static void Main()
{
Screen.Initialize(GoSockets.Socket1);
CalibrateTouchScreen();
Screen.SetOrientation(Orientation.Portrait);
Screen.DrawFill((ushort)BasicColor.Black);
Screen.Execute();
while(true)
{
Screen.TouchscreenWaitForEvent();
Screen.Execute(Synchronicity.Asynchronous); // if I get rid of Asynchronous, it blocks here
if(TopColor==BasicColor.Green)
TopColor=BasicColor.Red;
else
TopColor=BasicColor.Green;
Screen.DrawCircleFilled(CenterX, CenterY-CircleRadius, CircleRadius, (ushort)TopColor);
Screen.Execute();
}
}
3) GetStringWidth may be broken on different fonts. Verdana9 seems to be offset 20 pixels too far to the left when I try this, but Verdana14 works perfectly.
Screen.SetOrientation(Orientation.Portrait);
Screen.DrawFill((ushort)BasicColor.Black);
string Message = "Center Test";
int ScreenWidth = 240;
FontInfo TextFont = new Verdana9().GetFontInfo();
Screen.DrawString((ScreenWidth / 2) - (TextFont.GetStringWidth(Message) / 2), 0, (ushort)BasicColor.Red, TextFont.ID, Message);
TextFont = new Verdana14().GetFontInfo();
Screen.DrawString((ScreenWidth / 2) - (TextFont.GetStringWidth(Message) / 2), 100, (ushort)BasicColor.White, TextFont.ID, Message);
