void OnTouchEffectAction(object sender, TouchActionEventArgs args)
{
switch (args.Type)
{
case TouchActionType.Pressed:
if (!inProgressPolylines.ContainsKey(args.Id))
{
Color strokeColor = (Color)typeof(Color).GetRuntimeField(colorPicker.Items[colorPicker.SelectedIndex]).GetValue(null);
float strokeWidth = ConvertToPixel(new float[] { 1, 2, 5, 10, 20 }[widthPicker.SelectedIndex]);
FingerPaintPolyline polyline = new FingerPaintPolyline
{
StrokeColor = strokeColor,
StrokeWidth = strokeWidth
};
polyline.Path.MoveTo(ConvertToPixel(args.Location));
inProgressPolylines.Add(args.Id, polyline);
canvasView.InvalidateSurface();
}
break;
case TouchActionType.Moved:
if (inProgressPolylines.ContainsKey(args.Id))
{
FingerPaintPolyline polyline = inProgressPolylines[args.Id];
polyline.Path.LineTo(ConvertToPixel(args.Location));
canvasView.InvalidateSurface();
}
break;
case TouchActionType.Released:
if (inProgressPolylines.ContainsKey(args.Id))
{
completedPolylines.Add(inProgressPolylines[args.Id]);
inProgressPolylines.Remove(args.Id);
canvasView.InvalidateSurface();
}
break;
case TouchActionType.Cancelled:
if (inProgressPolylines.ContainsKey(args.Id))
{
inProgressPolylines.Remove(args.Id);
canvasView.InvalidateSurface();
}
break;
}
}
void OnTouchEffectAction(object sender, TouchActionEventArgs args)
{
switch (args.Type)
{
case TouchActionType.Pressed:
if (!inProgressPolylines.ContainsKey(args.Id))
{
//Color strokeColor = (Color)typeof(Color).GetRuntimeField(colorPicker.Items[colorPicker.SelectedIndex]).GetValue(null);
//float strokeWidth = ConvertToPixel(new float[] { 1, 2, 5, 10, 20 }[widthPicker.SelectedIndex]);
//FingerPaintPolyline polyline = new FingerPaintPolyline
//{
// StrokeColor = strokeColor,
// StrokeWidth = strokeWidth
//};
//polyline.Path.MoveTo(ConvertToPixel(args.Location));
//inProgressPolylines.Add(args.Id, polyline);
touchPoint = args.Location;
touchPoint1 = ConvertToPixel(args.Location);
txt.Text = "";
txt.TextChanged += Txt_TextChanged;
txt.WidthRequest = 300;
txt.HeightRequest = 40;
txt.VerticalOptions = LayoutOptions.Start;
txt.HorizontalOptions = LayoutOptions.Start;
//txt.BackgroundColor = Color.Yellow;
txt.InputTransparent = true;
txt.TextColor = Color.White;
txt.BackgroundColor = Color.Transparent;
gridCanvas.Children.Add(txt, 0, 0);
//gridCanvas.Children[1].
gridCanvas.Children[1].TranslationX = args.Location.X; //ConvertToPixel(args.Location).X;
gridCanvas.Children[1].TranslationY = args.Location.Y; //ConvertToPixel(args.Location).Y;
//canvasView.InputTransparent = true;
gridCanvas.Children[1].Focus();
gridCanvas.RowDefinitions[0].Height = GridLength.Star;
//gridCanvas.RowDefinitions[1].Height = GridLength.Star;
canvasView.InvalidateSurface();
}
break;
case TouchActionType.Moved:
if (inProgressPolylines.ContainsKey(args.Id))
{
FingerPaintPolyline polyline = inProgressPolylines[args.Id];
polyline.Path.LineTo(ConvertToPixel(args.Location));
canvasView.InvalidateSurface();
}
break;
case TouchActionType.Released:
if (inProgressPolylines.ContainsKey(args.Id))
{
completedPolylines.Add(inProgressPolylines[args.Id]);
inProgressPolylines.Remove(args.Id);
canvasView.InvalidateSurface();
}
break;
case TouchActionType.Cancelled:
if (inProgressPolylines.ContainsKey(args.Id))
{
inProgressPolylines.Remove(args.Id);
canvasView.InvalidateSurface();
}
break;
}
}
