/// <summary>
/// Combines the region with a given path, specifying the operation used to combine.
/// </summary>
/// <param name="region">The region to perform the operation on.</param>
/// <param name="path">The path to perform the operation with.</param>
/// <param name="operation">The type of operation to perform.</param>
/// <returns></returns>
internal static bool CombineWithPath(this SKRegion region, SKPath path, SKRegionOperation operation)
{
using SKRegion pathRegion = new SKRegion();
pathRegion.SetPath(path, usePathBounds: true);
return(region.Op(pathRegion, operation));
}
internal static bool Op(this SKRegion region, SKPath path, SKRegionOperation operation)
{
using (SKRegion pathRegion = new SKRegion())
{
pathRegion.SetPath(path, true);
return(region.Op(pathRegion, operation));
}
}
public void ClipRegion(SKRegion region, SKPath path,
SKRegionOperation regionOperation = SKRegionOperation.Intersect)
{
using (SKRegion region1 = new SKRegion())
{
region1.SetPath(path);
region.Op(region1, regionOperation);
}
}
public void ClipPath(SKPath path, SKRegionOperation operation = SKRegionOperation.Intersect, bool antialias = false)
{
if (path == null)
{
throw new ArgumentNullException(nameof(path));
}
SkiaApi.sk_canvas_clip_path_with_operation(Handle, path.Handle, operation, antialias);
}
void DisplayClipOp(SKCanvas canvas, SKRect rect, SKRegionOperation regionOp)
{
float textSize = textPaint.TextSize;
canvas.DrawText(regionOp.ToString(), rect.MidX, rect.Top + textSize, textPaint);
rect.Top += textSize;
float radius = 0.9f * Math.Min(rect.Width / 3, rect.Height / 2);
float xCenter = rect.MidX;
float yCenter = rect.MidY;
SKRectI recti = new SKRectI((int)rect.Left, (int)rect.Top,
(int)rect.Right, (int)rect.Bottom);
using (SKRegion wholeRectRegion = new SKRegion())
{
wholeRectRegion.SetRect(recti);
using (SKRegion region1 = new SKRegion(wholeRectRegion))
using (SKRegion region2 = new SKRegion(wholeRectRegion))
{
using (SKPath path1 = new SKPath())
{
path1.AddCircle(xCenter - radius / 2, yCenter, radius);
region1.SetPath(path1);
}
using (SKPath path2 = new SKPath())
{
path2.AddCircle(xCenter + radius / 2, yCenter, radius);
region2.SetPath(path2);
}
region1.Op(region2, regionOp);
canvas.Save();
canvas.ClipRegion(region1);
canvas.DrawPaint(fillPaint);
canvas.Restore();
}
}
}
public void ClipRect(SKRect rect, SKRegionOperation operation = SKRegionOperation.Intersect, bool antialias = false)
{
SkiaApi.sk_canvas_clip_rect_with_operation (Handle, ref rect, operation, antialias);
}
public void ClipPath(SKPath path, SKRegionOperation operation = SKRegionOperation.Intersect, bool antialias = false)
{
if (path == null)
throw new ArgumentNullException (nameof (path));
SkiaApi.sk_canvas_clip_path_with_operation (Handle, path.Handle, operation, antialias);
}
public bool Op(SKRegion region, SKRegionOperation op)
{
return(SkiaApi.sk_region_op2(Handle, region.Handle, op));
}
public extern static bool sk_region_op2(sk_region_t r, sk_region_t src, SKRegionOperation op);
public bool Op(SKRegion region, SKRegionOperation op) => SkiaApi.sk_region_op2(Handle, region.Handle, op);
public bool Op(SKRectI rect, SKRegionOperation op) => SkiaApi.sk_region_op(Handle, rect.Left, rect.Top, rect.Right, rect.Bottom, op);
public void ClipPath (SKPath path, SKRegionOperation operation, bool antialias = false)
{
ClipPath (path, (SKClipOperation)(int)operation, antialias);
}
public void ClipRect (SKRect rect, SKRegionOperation operation, bool antialias = false)
{
ClipRect (rect, (SKClipOperation)(int)operation, antialias);
}
public void ClipRect(SKRect rect, SKRegionOperation operation = SKRegionOperation.Intersect, bool antialias = false)
{
SkiaApi.sk_canvas_clip_rect_with_operation(Handle, ref rect, operation, antialias);
}
public void ClipRect(SKRect rect, SKRegionOperation operation, bool antialias = false)
{
ClipRect(rect, (SKClipOperation)(int)operation, antialias);
}
public bool Op(SKRegion region, SKRegionOperation op)
{
return SkiaApi.sk_region_op2(Handle, region.Handle, op);
}
public void ClipPath(SKPath path, SKRegionOperation operation, bool antialias = false)
{
ClipPath(path, (SKClipOperation)(int)operation, antialias);
}
public bool Op(SKRectI rect, SKRegionOperation op)
{
return SkiaApi.sk_region_op(Handle, rect.Left, rect.Top, rect.Right, rect.Bottom, op);
}
public bool Op(int left, int top, int right, int bottom, SKRegionOperation op) => SkiaApi.sk_region_op(Handle, left, top, right, bottom, op);
public bool Op(int left, int top, int right, int bottom, SKRegionOperation op)
{
return SkiaApi.sk_region_op(Handle, left, top, right, bottom, op);
}
public bool Op(SKPath path, SKRegionOperation op)
{
using (var pathRegion = new SKRegion(path)) {
return(Op(pathRegion, op));
}
}
public extern static bool sk_region_op(sk_region_t r, int left, int top, int right, int bottom, SKRegionOperation op);