private void OnCropImage(object sender, EventArgs e)
{
using var cropPath = new SKPath();
cropPath.AddPoly(cropPoints.ToArray());
// add a little padding all round
var bounds = SKRectI.Ceiling(cropPath.TightBounds);
bounds.Inflate(4, 4);
var info = new SKImageInfo(bounds.Width, bounds.Height);
using var surface = SKSurface.Create(info);
var canvas = surface.Canvas;
canvas.Clear(SKColors.Transparent);
canvas.Translate(-bounds.Left, -bounds.Top);
canvas.ClipPath(cropPath);
canvas.DrawImage(pickedImage, 0, 0);
var image = surface.Snapshot();
Navigation.PushAsync(new PreviewPage(image));
}
public void SKRectICeilingWorksAsExpected()
{
Assert.Equal(new SKRectI(6, 6, 21, 21), SKRectI.Ceiling(new SKRect(5.5f, 5.5f, 20.5f, 20.5f)));
Assert.Equal(new SKRectI(5, 5, 21, 21), SKRectI.Ceiling(new SKRect(5.5f, 5.5f, 20.5f, 20.5f), true));
Assert.Equal(new SKRectI(6, 6, 21, 21), SKRectI.Ceiling(new SKRect(5.4f, 5.6f, 20.4f, 20.6f)));
Assert.Equal(new SKRectI(5, 5, 21, 21), SKRectI.Ceiling(new SKRect(5.4f, 5.6f, 20.4f, 20.6f), true));
Assert.Equal(new SKRectI(21, 21, 6, 6), SKRectI.Ceiling(new SKRect(20.4f, 20.6f, 5.4f, 5.6f)));
Assert.Equal(new SKRectI(21, 21, 5, 5), SKRectI.Ceiling(new SKRect(20.4f, 20.6f, 5.4f, 5.6f), true));
}
/// <summary>
/// Sets the contents of the region to the specified path.
/// </summary>
/// <param name="region">The region to set the path into.</param>
/// <param name="path">The path object.</param>
/// <param name="usePathBounds">Whether to set the region's new bounds to the bounds of the path itself.</param>
internal static bool SetPath(this SKRegion region, SKPath path, bool usePathBounds)
{
if (usePathBounds && path.GetBounds(out SKRect bounds))
{
using SKRegion clip = new SKRegion();
clip.SetRect(SKRectI.Ceiling(bounds));
return(region.SetPath(path, clip));
}
else
{
return(region.SetPath(path));
}
}
