void DrawElement(Func <Rect> add, Pen pen = null, Brush brush = null)
{
if (pen == null && brush == null)
{
return;
}
var lgb = brush as LinearGradientBrush;
if (lgb != null)
{
var cg = CreateGradient(lgb.Stops);
context.SaveState();
var frame = add();
context.Clip();
CGGradientDrawingOptions options = CGGradientDrawingOptions.DrawsBeforeStartLocation | CGGradientDrawingOptions.DrawsAfterEndLocation;
var size = frame.Size;
var start = Conversions.GetCGPoint(lgb.Absolute ? lgb.Start : frame.Position + lgb.Start * size);
var end = Conversions.GetCGPoint(lgb.Absolute ? lgb.End : frame.Position + lgb.End * size);
context.DrawLinearGradient(cg, start, end, options);
context.RestoreState();
brush = null;
}
var rgb = brush as RadialGradientBrush;
if (rgb != null)
{
var cg = CreateGradient(rgb.Stops);
context.SaveState();
var frame = add();
context.Clip();
CGGradientDrawingOptions options = CGGradientDrawingOptions.DrawsBeforeStartLocation | CGGradientDrawingOptions.DrawsAfterEndLocation;
var size = frame.Size;
var start = Conversions.GetCGPoint(rgb.GetAbsoluteCenter(frame));
var r = (nfloat)rgb.GetAbsoluteRadius(frame).Max;
var end = Conversions.GetCGPoint(rgb.GetAbsoluteFocus(frame));
context.DrawRadialGradient(cg, start, 0, end, r, options);
context.RestoreState();
brush = null;
}
if (pen != null || brush != null)
{
var mode = SetPenAndBrush(pen, brush);
add();
context.DrawPath(mode);
}
}
extern static void CGContextDrawRadialGradient (IntPtr context, IntPtr gradient, PointF startCenter, float startRadius, PointF endCenter, float endRadius, CGGradientDrawingOptions options);
public void DrawLinearGradient (CGGradient gradient, PointF startPoint, PointF endPoint, CGGradientDrawingOptions options)
{
CGContextDrawLinearGradient (handle, gradient.handle, startPoint, endPoint, options);
}
extern static void CGContextDrawLinearGradient(IntPtr context, IntPtr gradient, PointF startPoint, PointF endPoint, CGGradientDrawingOptions options);
public void DrawRadialGradient(CGGradient gradient, CGPoint startCenter, nfloat startRadius, CGPoint endCenter, nfloat endRadius, CGGradientDrawingOptions options)
{
context.CGContext.DrawRadialGradient(gradient, startCenter, startRadius, endCenter, endRadius, options);
}
public void DrawLinearGradient (CGGradient gradient, CGPoint startPoint, CGPoint endPoint, CGGradientDrawingOptions options)
{
CGContextDrawLinearGradient (handle, gradient == null ? IntPtr.Zero : gradient.handle, startPoint, endPoint, options);
}
public void DrawRadialGradient(CGGradient gradient, PointF startCenter, float startRadius, PointF endCenter, float endRadius, CGGradientDrawingOptions options)
{
CGContextDrawRadialGradient(handle, gradient.handle, startCenter, startRadius, endCenter, endRadius, options);
}
public void DrawLinearGradient(CGGradient gradient, PointF startPoint, PointF endPoint, CGGradientDrawingOptions options)
{
CGContextDrawLinearGradient(handle, gradient.handle, startPoint, endPoint, options);
}
public void DrawLinearGradient(CGGradient gradient, CGPoint startPoint, CGPoint endPoint, CGGradientDrawingOptions options)
{
CGContextDrawLinearGradient(handle, gradient == null ? IntPtr.Zero : gradient.handle, startPoint, endPoint, options);
}
extern static void CGContextDrawLinearGradient(/* CGContextRef __nullable */ IntPtr context,
/* CGGradientRef __nullable */ IntPtr gradient, CGPoint startPoint, CGPoint endPoint,
CGGradientDrawingOptions options);
public void DrawRadialGradient (CGGradient gradient, CGPoint startCenter, nfloat startRadius, CGPoint endCenter, nfloat endRadius, CGGradientDrawingOptions options){
context.CGContext.DrawRadialGradient (gradient, startCenter, startRadius, endCenter, endRadius, options);
}
public void DrawLinearGradient (CGGradient gradient, CGPoint startPoint, CGPoint endPoint, CGGradientDrawingOptions options){
context.CGContext.DrawLinearGradient (gradient, startPoint, endPoint, options);
}
public void DrawRadialGradient (CGGradient gradient, CGPoint startCenter, nfloat startRadius, CGPoint endCenter, nfloat endRadius, CGGradientDrawingOptions options)
{
CGContextDrawRadialGradient (handle, gradient == null ? IntPtr.Zero : gradient.handle, startCenter, startRadius, endCenter, endRadius, options);
}
extern static void CGContextDrawRadialGradient (/* CGContextRef __nullable */ IntPtr context, /* CGGradientRef __nullable */ IntPtr gradient, CGPoint startCenter, /* CGFloat */ nfloat startRadius, CGPoint endCenter, /* CGFloat */ nfloat endRadius, CGGradientDrawingOptions options);
public void DrawRadialGradient (CGGradient gradient, PointF startCenter, float startRadius, PointF endCenter, float endRadius, CGGradientDrawingOptions options)
{
CGContextDrawRadialGradient (handle, gradient.handle, startCenter, startRadius, endCenter, endRadius, options);
}
extern static void CGContextDrawLinearGradient(IntPtr context, IntPtr gradient, PointF startPoint, PointF endPoint, CGGradientDrawingOptions options);
extern static void CGContextDrawRadialGradient(/* CGContextRef __nullable */ IntPtr context,
/* CGGradientRef __nullable */ IntPtr gradient,
CGPoint startCenter, /* CGFloat */ nfloat startRadius,
CGPoint endCenter, /* CGFloat */ nfloat endRadius, CGGradientDrawingOptions options);
extern static void CGContextDrawRadialGradient(IntPtr context, IntPtr gradient, PointF startCenter, float startRadius,
PointF endCenter, float endRadius, CGGradientDrawingOptions options);
public void DrawRadialGradient(CGGradient gradient, CGPoint startCenter, nfloat startRadius, CGPoint endCenter, nfloat endRadius, CGGradientDrawingOptions options)
{
CGContextDrawRadialGradient(handle, gradient == null ? IntPtr.Zero : gradient.handle, startCenter, startRadius, endCenter, endRadius, options);
}
public void DrawLinearGradient(CGGradient gradient, CGPoint startPoint, CGPoint endPoint, CGGradientDrawingOptions options)
{
context.CGContext.DrawLinearGradient(gradient, startPoint, endPoint, options);
}
extern static void CGContextDrawLinearGradient (/* CGContextRef __nullable */ IntPtr context, /* CGGradientRef __nullable */ IntPtr gradient, CGPoint startPoint, CGPoint endPoint, CGGradientDrawingOptions options);
