private void FinalizePaste(bool clearall)
{
if (clearall)
{
iscopying = false;
ClearPastePositions();
}
// refresh the preview in case we copied to the source domain
AdditionalDrawables.RemoveAll(PasteOverlays);
PasteOverlays = new List <CanvasDrawable>();
UpdateUIElements();
}
private void DrawPasteOverlay(Avalonia.Point dominoPoint, PointerEventArgs e)
{
// display the dominoes to paste as a half-transparent overlay.
// reference point:
var reference_point = Dominoes[toCopy.Min()].CenterPoint - dominoPoint;
if (PasteOverlays.Count == 0)
{
// create the overlays
foreach (int i in toCopy)
{
var p = new SkiaSharp.SKPath();
var points = Dominoes[i].CanvasPoints;
if (points.Length > 1)
{
p.MoveTo(new SkiaSharp.SKPoint((float)points[0].X - (float)reference_point.X, (float)points[0].Y - (float)reference_point.Y));
foreach (var point in points.Skip(1))
{
p.LineTo(new SkiaSharp.SKPoint((float)point.X - (float)reference_point.X, (float)point.Y - (float)reference_point.Y));
}
}
var color = Dominoes[i].StoneColor.ToSKColor().WithAlpha(128);
PasteOverlays.Add(new CanvasDrawable()
{
BeforeBorders = false, Paint = new SkiaSharp.SKPaint()
{
Color = color
}, Path = p
});
}
AdditionalDrawables.AddRange(PasteOverlays);
}
else
{
// find out difference between current and last reference point
var shift = lastreference - reference_point;
var transform = SkiaSharp.SKMatrix.CreateTranslation((float)shift.X, (float)shift.Y);
System.Diagnostics.Debug.WriteLine(shift);
foreach (var stone in PasteOverlays)
{
stone.Path.Transform(transform);
}
}
lastreference = reference_point;
Redraw();
}
