private void OnCanvasViewOnPaintSurface(object sender, SKPaintSurfaceEventArgs e)
{
var info = e.Info;
var surface = e.Surface;
var canvas = surface.Canvas;
canvas.Clear();
if (Gradients != null && Gradients.Any())
{
_fillPaint.Shader = GetGradient(info, Gradients, GradientOrientation);
}
else
{
_fillPaint.Color = Color.ToSKColor();
}
var radius = (float)(info.Width >= info.Height ? info.Height : info.Width) / 2;
if (IsOnlyBorder)
{
radius = radius - ConvertToDeviceScaleFactor(BorderWidth);
_fillPaint.Style = SKPaintStyle.Stroke;
_fillPaint.StrokeWidth = CalculateScaled.Size(BorderWidth);
}
canvas.DrawCircle((float)info.Width / 2, (float)info.Height / 2, radius, _fillPaint);
}
private void OnCanvasViewOnPaintSurface(object sender, SKPaintSurfaceEventArgs e)
{
var info = e.Info;
var surface = e.Surface;
var canvas = surface.Canvas;
canvas.Clear();
if (Gradients != null && Gradients.Any())
{
_fillPaint.Shader = GetGradient(info, Gradients, GradientOrientation);
}
else
{
_fillPaint.Color = Color.ToSKColor();
}
var topRadius = ConvertToDeviceScaleFactor(CornerRadius.Left);
var bottomRightRadius = ConvertToDeviceScaleFactor(CornerRadius.Top);
var bottomLeftRadius = ConvertToDeviceScaleFactor(CornerRadius.Right);
var top = new SKPoint((float)info.Width / 2, 0);
var bottomRight = new SKPoint(info.Width, info.Height);
var bottomLeft = new SKPoint(0, info.Height);
using (var path = new SKPath())
{
path.MoveTo(bottomLeft);
path.ArcTo(top, bottomRight, topRadius);
path.ArcTo(bottomRight, bottomLeft, bottomRightRadius);
path.ArcTo(bottomLeft, top, bottomLeftRadius);
path.Close();
canvas.DrawPath(path, _fillPaint);
}
}
protected virtual void OnCanvasViewOnPaintSurface(object sender, SKPaintSurfaceEventArgs e)
{
var info = e.Info;
var surface = e.Surface;
var canvas = surface.Canvas;
canvas.Clear();
if (Gradients != null && Gradients.Any())
{
_fillPaint.Shader = GetGradient(info, Gradients, GradientOrientation);
}
else
{
_fillPaint.Color = Color.ToSKColor();
}
var topLeftRadius = ConvertToDeviceScaleFactor(CornerRadius.Left);
var topRightRadius = ConvertToDeviceScaleFactor(CornerRadius.Top);
var bottomRightRadius = ConvertToDeviceScaleFactor(CornerRadius.Right);
var bottomLeftRadius = ConvertToDeviceScaleFactor(CornerRadius.Bottom);
var topLeft = new SKPoint(0, 0);
var topRight = new SKPoint(info.Width, 0);
var bottomRight = new SKPoint(info.Width, info.Height);
var bottomLeft = new SKPoint(0, info.Height);
using (var path = new SKPath())
{
path.MoveTo(bottomLeft);
path.ArcTo(topLeft, topRight, topLeftRadius);
path.ArcTo(topRight, bottomRight, topRightRadius);
path.ArcTo(bottomRight, bottomLeft, bottomRightRadius);
path.ArcTo(bottomLeft, topLeft, bottomLeftRadius);
path.Close();
canvas.ClipPath(path);
if (IsOnlyBorder)
{
var border = ConvertToDeviceScaleFactor(BorderWidth) * 2;
var scalaX = (info.Width - border) / info.Width;
var scalaY = (info.Height - border) / info.Height;
canvas.Translate(ConvertToDeviceScaleFactor(BorderWidth), ConvertToDeviceScaleFactor(BorderWidth));
canvas.Scale(scalaX, scalaY);
using (var center = new SKPath())
{
center.MoveTo(bottomLeft);
center.ArcTo(topLeft, topRight, topLeftRadius);
center.ArcTo(topRight, bottomRight, topRightRadius);
center.ArcTo(bottomRight, bottomLeft, bottomRightRadius);
center.ArcTo(bottomLeft, topLeft, bottomLeftRadius);
center.Close();
canvas.ClipPath(center, SKClipOperation.Difference);
}
}
}
canvas.DrawPaint(_fillPaint);
}
