private void ProcessMouseEvent(MouseEventArgs e, [CallerMemberName] string callerName = null)
{
DebugMessage($"{callerName}");
if (strokeStylus != null)
{
return;
}
strokeMouse = callerName == nameof(HandleEventSignaturePadCanvasPreviewMouseDown) ? new InkStroke(InkSource.Mouse) : strokeMouse;
if (strokeMouse == null)
{
return;
}
var point = e.GetPosition(canvasSignaturePad);
var ip = new InkPoint(point, 0f, null, GetCurrentTimestamp());
DebugInkPoint(callerName, strokeMouse.Points.Count, ip);
if (ip.Position.X < 0 || ip.Position.X > Width || ip.Position.Y < 0 || ip.Position.Y > Height)
{
borderTouch = true;
return;
}
if (lStroke?.Count == 0 && strokeMouse?.Points.Count == 0)
{
RecordingStarted?.Invoke();
}
strokeMouse.Points.Add(ip);
if (callerName == nameof(HandleEventSignaturePadCanvasPreviewMouseUp))
{
DebugMessage($"StrokeCaptured: #{lStroke.Count} Src = {strokeMouse.Source}, Count = {strokeMouse.Points.Count} @ {strokeMouse.Timestamp}");
lStroke.Add(strokeMouse);
strokeMouse = null;
}
}
private static void DebugInkPoint(string source, int index, InkPoint point)
{
DebugMessage($"{source} => #{index}: {point.Position.X} x {point.Position.Y} x {point.Pressure} @ {point.Timestamp.Ticks}");
}
private void ProcessStylusEvent(StylusEventArgs e, [CallerMemberName] string callerName = null)
{
DebugMessage($"{callerName}");
if (strokeMouse != null)
{
return;
}
if (callerName == nameof(HandleEventSignaturePadCanvasPreviewStylusDown))
{
if (lStroke?.Count == 0)
{
RecordingStarted?.Invoke();
}
strokeStylus = new InkStroke(InkSource.Stylus);
foreach (var sp in e.GetStylusPoints(canvasSignaturePad))
{
var ip = new InkPoint(sp.ToPoint(), sp.PressureFactor, null, GetCurrentTimestamp());
DebugInkPoint(callerName, strokeStylus.Points.Count, ip);
if (ip.Position.X < 0 || ip.Position.X > Width || ip.Position.Y < 0 || ip.Position.Y > Height)
{
borderTouch = true;
return;
}
strokeStylus.Points.Add(ip);
}
}
else if (strokeStylus != null)
{
var tsNow = GetCurrentTimestamp();
var sps = e.GetStylusPoints(canvasSignaturePad);
if (sps.Count > 1)
{
var tsLast = strokeStylus.Points.Last().Timestamp;
for (var idxSp = 0; idxSp < sps.Count; idxSp++)
{
var sp = sps[idxSp];
var tsPointApprox = TimeSpan.FromTicks((tsNow.Ticks - tsLast.Ticks) * (idxSp + 1) / sps.Count + tsLast.Ticks);
var ip = new InkPoint(sp.ToPoint(), sp.PressureFactor, null, tsPointApprox);
DebugInkPoint(callerName, strokeStylus.Points.Count, ip);
if (ip.Position.X < 0 || ip.Position.X > Width || ip.Position.Y < 0 || ip.Position.Y > Height)
{
borderTouch = true;
return;
}
strokeStylus.Points.Add(ip);
}
}
else if (sps.Count > 0)
{
var ip = new InkPoint(sps[0].ToPoint(), sps[0].PressureFactor, null, tsNow);
DebugInkPoint(callerName, strokeStylus.Points.Count, ip);
if (ip.Position.X < 0 || ip.Position.X > Width || ip.Position.Y < 0 || ip.Position.Y > Height)
{
BorderTouch?.Invoke();
return;
}
strokeStylus.Points.Add(ip);
}
if (callerName == nameof(HandleEventSignaturePadCanvasPreviewStylusUp))
{
DebugMessage($"StrokeCaptured: #{lStroke.Count} Src = {strokeStylus.Source}, Count = {strokeStylus.Points.Count} @ {strokeStylus.Timestamp}");
lStroke.Add(strokeStylus);
strokeStylus = null;
}
}
}