private void DrawSatValPanel(Canvas canvas)
{
#if __ANDROID_11__
if (Android.OS.Build.VERSION.SdkInt > Android.OS.BuildVersionCodes.Honeycomb)
{
RootView.SetLayerType(LayerType.Software, null);
}
#endif
var rect = _satValRect;
if (BorderWidthPx > 0)
{
_borderPaint.Color = _borderColor;
canvas.DrawRect(_drawingRect.Left, _drawingRect.Top, rect.Right + BorderWidthPx, rect.Bottom + BorderWidthPx, _borderPaint);
}
if (_valShader == null)
{
_valShader = new LinearGradient(rect.Left, rect.Top, rect.Left, rect.Bottom,
Color.Argb(255, 255, 255, 255), Color.Argb(255, 0, 0, 0), Shader.TileMode.Clamp);
}
var rgb = ColorUtils.ColorFromHSV(_hue / 360f, 1f, 1f);
using (_satShader = new LinearGradient(rect.Left, rect.Top, rect.Right, rect.Top,
Color.Argb(255, 255, 255, 255), rgb, Shader.TileMode.Clamp))
{
var mShader = new ComposeShader(_valShader, _satShader, PorterDuff.Mode.Multiply);
_satValPaint.SetShader(mShader);
canvas.DrawRect(rect, _satValPaint);
}
var p = SatValToPoint(_sat, _val);
_satValTrackerPaint.Color = Color.Argb(255, 0, 0, 0);
canvas.DrawCircle(p.X, p.Y, _paletteCircleTrackerRadius - 1f * _density, _satValTrackerPaint);
_satValTrackerPaint.Color = Color.Argb(255, 221, 221, 221);
canvas.DrawCircle(p.X, p.Y, _paletteCircleTrackerRadius, _satValTrackerPaint);
}