public XImageCursor(IntPtr display, IBitmapImpl bitmap, PixelPoint hotSpot)
{
var size = Marshal.SizeOf <XcursorImage>() +
(bitmap.PixelSize.Width * bitmap.PixelSize.Height * 4);
var runtimePlatform = AvaloniaLocator.Current.GetService <IRuntimePlatform>() ??
throw new InvalidOperationException("Unable to locate IRuntimePlatform");
var platformRenderInterface = AvaloniaLocator.Current.GetService <IPlatformRenderInterface>() ??
throw new InvalidOperationException("Unable to locate IPlatformRenderInterface");
_pixelSize = bitmap.PixelSize;
_blob = runtimePlatform.AllocBlob(size);
var image = (XcursorImage *)_blob.Address;
image->version = 1;
image->size = Marshal.SizeOf <XcursorImage>();
image->width = bitmap.PixelSize.Width;
image->height = bitmap.PixelSize.Height;
image->xhot = hotSpot.X;
image->yhot = hotSpot.Y;
image->pixels = (IntPtr)(image + 1);
using (var renderTarget = platformRenderInterface.CreateRenderTarget(new[] { this }))
using (var ctx = renderTarget.CreateDrawingContext(null))
{
var r = new Rect(_pixelSize.ToSize(1));
ctx.DrawBitmap(RefCountable.CreateUnownedNotClonable(bitmap), 1, r, r);
}
Handle = XLib.XcursorImageLoadCursor(display, _blob.Address);
}
public override void Save(Stream stream)
{
using (var wic = new WicRenderTargetBitmapImpl(PixelSize, Dpi))
{
using (var dc = wic.CreateDrawingContext(null))
{
dc.DrawImage(
RefCountable.CreateUnownedNotClonable(this),
1,
new Rect(PixelSize.ToSize(Dpi.X)),
new Rect(PixelSize.ToSize(Dpi.X)));
}
wic.Save(stream);
}
}