public void DrawImage(SvgImage svgImage, bool ignoreDisplay)
{
if (!CanDraw(svgImage, ignoreDisplay))
{
return;
}
float width = svgImage.Width.ToDeviceValue(null, UnitRenderingType.Horizontal, svgImage);
float height = svgImage.Height.ToDeviceValue(null, UnitRenderingType.Vertical, svgImage);
var location = svgImage.Location.ToDeviceValue(null, svgImage);
if (width <= 0f || height <= 0f || svgImage.Href == null)
{
return;
}
var image = SkiaUtil.GetImage(svgImage, svgImage.Href);
var skImage = image as SKImage;
var svgFragment = image as SvgFragment;
if (skImage == null && svgFragment == null)
{
return;
}
if (skImage != null)
{
_disposable.Add(skImage);
}
SKRect srcRect = default;
if (skImage != null)
{
srcRect = SKRect.Create(0f, 0f, skImage.Width, skImage.Height);
}
if (svgFragment != null)
{
var skSize = SkiaUtil.GetDimensions(svgFragment);
srcRect = SKRect.Create(0f, 0f, skSize.Width, skSize.Height);
}
var destClip = SKRect.Create(location.X, location.Y, width, height);
var destRect = destClip;
var aspectRatio = svgImage.AspectRatio;
if (aspectRatio.Align != SvgPreserveAspectRatio.none)
{
var fScaleX = destClip.Width / srcRect.Width;
var fScaleY = destClip.Height / srcRect.Height;
var xOffset = 0f;
var yOffset = 0f;
if (aspectRatio.Slice)
{
fScaleX = Math.Max(fScaleX, fScaleY);
fScaleY = Math.Max(fScaleX, fScaleY);
}
else
{
fScaleX = Math.Min(fScaleX, fScaleY);
fScaleY = Math.Min(fScaleX, fScaleY);
}
switch (aspectRatio.Align)
{
case SvgPreserveAspectRatio.xMinYMin:
break;
case SvgPreserveAspectRatio.xMidYMin:
xOffset = (destClip.Width - srcRect.Width * fScaleX) / 2;
break;
case SvgPreserveAspectRatio.xMaxYMin:
xOffset = (destClip.Width - srcRect.Width * fScaleX);
break;
case SvgPreserveAspectRatio.xMinYMid:
yOffset = (destClip.Height - srcRect.Height * fScaleY) / 2;
break;
case SvgPreserveAspectRatio.xMidYMid:
xOffset = (destClip.Width - srcRect.Width * fScaleX) / 2;
yOffset = (destClip.Height - srcRect.Height * fScaleY) / 2;
break;
case SvgPreserveAspectRatio.xMaxYMid:
xOffset = (destClip.Width - srcRect.Width * fScaleX);
yOffset = (destClip.Height - srcRect.Height * fScaleY) / 2;
break;
case SvgPreserveAspectRatio.xMinYMax:
yOffset = (destClip.Height - srcRect.Height * fScaleY);
break;
case SvgPreserveAspectRatio.xMidYMax:
xOffset = (destClip.Width - srcRect.Width * fScaleX) / 2;
yOffset = (destClip.Height - srcRect.Height * fScaleY);
break;
case SvgPreserveAspectRatio.xMaxYMax:
xOffset = (destClip.Width - srcRect.Width * fScaleX);
yOffset = (destClip.Height - srcRect.Height * fScaleY);
break;
}
destRect = SKRect.Create(
destClip.Left + xOffset, destClip.Top + yOffset,
srcRect.Width * fScaleX, srcRect.Height * fScaleY);
}
_skCanvas.Save();
var skMatrix = SkiaUtil.GetSKMatrix(svgImage.Transforms);
SetTransform(skMatrix);
SetClipPath(svgImage, _disposable);
var skPaintOpacity = SetOpacity(svgImage, _disposable);
var skPaintFilter = SetFilter(svgImage, _disposable);
_skCanvas.ClipRect(destClip, SKClipOperation.Intersect);
SetClip(svgImage, destClip);
if (skImage != null)
{
_skCanvas.DrawImage(skImage, srcRect, destRect);
}
if (svgFragment != null)
{
_skCanvas.Save();
float dx = destRect.Left;
float dy = destRect.Top;
float sx = destRect.Width / srcRect.Width;
float sy = destRect.Height / srcRect.Height;
var skTranslationMatrix = SKMatrix.MakeTranslation(dx, dy);
var skScaleMatrix = SKMatrix.MakeScale(sx, sy);
SKMatrix.PreConcat(ref skTranslationMatrix, ref skScaleMatrix);
SetTransform(skTranslationMatrix);
DrawFragment(svgFragment, ignoreDisplay);
_skCanvas.Restore();
}
if (skPaintFilter != null)
{
_skCanvas.Restore();
}
if (skPaintOpacity != null)
{
_skCanvas.Restore();
}
_skCanvas.Restore();
}