|
public AddArc ( |
||
| m | ||
| x | float | |
| y | float | |
| radius | float | |
| startAngle | float | |
| endAngle | float | |
| clockwise | bool | |
| return | void | |
public override void DrawRect(System.Drawing.RectangleF dirtyRect)
{
base.DrawRect(dirtyRect);
if(!IsPlaying)
return;
// Save context state
CGContext context = NSGraphicsContext.CurrentContext.GraphicsPort;
context.SaveState();
// Calculate size
float size = (Bounds.Width > Bounds.Height) ? Bounds.Height : Bounds.Width;
float circleRadius = (size - 4) / 2;
RectangleF rect = new RectangleF(padding / 2, padding / 2, size - padding, size - padding);
CGColor color1 = GlobalTheme.PanelBackgroundColor1;
CGColor color2 = GlobalTheme.PanelBackgroundColor2;
CGGradient gradientBackground;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
float[] locationListBackground = new float[] { 1.0f, 0.0f };
List<float> colorListBackground = new List<float>();
colorListBackground.AddRange(color1.Components);
colorListBackground.AddRange(color2.Components);
gradientBackground = new CGGradient(colorSpace, colorListBackground.ToArray(), locationListBackground);
// Create path
CGPath path = new CGPath();
float x = Bounds.Width / 2;
float y = Bounds.Height / 2;
path.AddArc(x, y, circleRadius, 0, 2 * (float)Math.PI, false);
path.AddArc(x, y, circleRadius / 3, 0, 2 * (float)Math.PI, false);
context.AddPath(path);
// Draw outline
context.SetLineWidth(1.5f);
context.SetStrokeColor(GlobalTheme.PanelBorderColor);
context.StrokePath();
// Clip path and draw gradient inside
context.AddPath(path);
context.EOClip();
context.DrawLinearGradient(gradientBackground, new PointF(0, 0), new PointF(0, Bounds.Height), CGGradientDrawingOptions.DrawsAfterEndLocation);
context.RestoreState();
}
