private static void makeEffects(PathEffect[] e, float phase)
{
e [0] = null; // no effect
e [1] = new CornerPathEffect(10);
e [2] = new DashPathEffect(new float[] { 10, 5, 5, 5 }, phase);
e [3] = new PathDashPathEffect(makePathDash(), 12, phase,
PathDashPathEffect.Style.ROTATE);
e [4] = new ComposePathEffect(e [2], e [1]);
e [5] = new ComposePathEffect(e [3], e [1]);
}
protected override void OnDraw(Canvas canvas)
{
base.OnDraw(canvas);
var effect = new DashPathEffect(new[] { _pathLength, _pathLength }, (_pathLength - _pathLength * _progress));
_paint.SetPathEffect(effect);
canvas.Save();
canvas.Translate(PaddingLeft, PaddingTop);
canvas.DrawPath(Path, _paint);
canvas.Restore();
}
public static void SetStrokeStyle(this Paint paint, float strokeWidth, UGStrokeStyle strokeStyle)
{
paint.StrokeCap = strokeStyle.LineCap.ToAGPaintCap();
paint.StrokeJoin = strokeStyle.LineJoin.ToAGPaintJoin();
paint.StrokeMiter = strokeStyle.MiterLimit;
if (strokeStyle.DashStyle.Value != null)
{
using (var effect = new DashPathEffect(
strokeStyle.DashStyle.Value.Select(v => v * strokeWidth).ToArray(),
strokeStyle.DashOffset))
{
paint.SetPathEffect(effect);
}
}
}
Paint GetPenPaint(Pen pen)
{
var paint = new Paint(PaintFlags.AntiAlias);
paint.SetStyle(Paint.Style.Stroke);
paint.SetARGB(pen.Color.A, pen.Color.R, pen.Color.G, pen.Color.B);
paint.StrokeWidth = (float)pen.Width;
if (pen.DashPattern != null && pen.DashPattern.Any())
{
var dashPathEffect = new DashPathEffect(pen.DashPattern.ToArray(), 0);
paint.SetPathEffect(dashPathEffect);
}
return(paint);
}
/// <summary>
/// Enables the axis line to be drawn in dashed mode, e.g.like this
/// "- - - - - -". THIS ONLY WORKS IF HARDWARE-ACCELERATION IS TURNED OFF.
/// Keep in mind that hardware acceleration boosts performance.
/// </summary>
/// <param name="lineLength">the length of the line pieces</param>
/// <param name="spaceLength">the length of space in between the pieces</param>
/// <param name="phase">offset, in degrees (normally, use 0)</param>
public void EnableAxisLineDashedLine(float lineLength, float spaceLength, float phase)
{
axisLineDashPathEffect = new DashPathEffect(new float[] {
lineLength, spaceLength
}, phase);
}
