public void DrawSymbol(SvgSymbol svgSymbol, bool ignoreDisplay)
{
if (!CanDraw(svgSymbol, ignoreDisplay))
{
return;
}
_skCanvas.Save();
float x = 0f;
float y = 0f;
float width = svgSymbol.ViewBox.Width;
float height = svgSymbol.ViewBox.Height;
if (svgSymbol.CustomAttributes.TryGetValue("width", out string?_widthString))
{
if (new SvgUnitConverter().ConvertFrom(_widthString) is SvgUnit _width)
{
width = _width.ToDeviceValue(null, UnitRenderingType.Horizontal, svgSymbol);
}
}
if (svgSymbol.CustomAttributes.TryGetValue("height", out string?heightString))
{
if (new SvgUnitConverter().ConvertFrom(heightString) is SvgUnit _height)
{
height = _height.ToDeviceValue(null, UnitRenderingType.Vertical, svgSymbol);
}
}
var skRectBounds = SKRect.Create(x, y, width, height);
var skMatrixViewBox = SkiaUtil.GetSvgViewBoxTransform(svgSymbol.ViewBox, svgSymbol.AspectRatio, x, y, width, height);
var skMatrix = SkiaUtil.GetSKMatrix(svgSymbol.Transforms);
SKMatrix.PreConcat(ref skMatrix, ref skMatrixViewBox);
SetTransform(skMatrix);
SetClipPath(svgSymbol, _disposable);
var skPaintOpacity = SetOpacity(svgSymbol, _disposable);
var skPaintFilter = SetFilter(svgSymbol, _disposable);
foreach (var svgElement in svgSymbol.Children)
{
Draw(svgElement, ignoreDisplay);
}
if (skPaintFilter != null)
{
_skCanvas.Restore();
}
if (skPaintOpacity != null)
{
_skCanvas.Restore();
}
_skCanvas.Restore();
}
public Symbol(SvgSymbol svgSymbol)
{
x = 0f;
y = 0f;
width = svgSymbol.ViewBox.Width;
height = svgSymbol.ViewBox.Height;
if (svgSymbol.CustomAttributes.TryGetValue("width", out string _widthString))
{
if (new SvgUnitConverter().ConvertFrom(_widthString) is SvgUnit _width)
{
width = _width.ToDeviceValue(null, UnitRenderingType.Horizontal, svgSymbol);
}
}
if (svgSymbol.CustomAttributes.TryGetValue("height", out string heightString))
{
if (new SvgUnitConverter().ConvertFrom(heightString) is SvgUnit _height)
{
height = _height.ToDeviceValue(null, UnitRenderingType.Vertical, svgSymbol);
}
}
bounds = SKRect.Create(x, y, width, height);
matrix = SvgHelper.GetSKMatrix(svgSymbol.Transforms);
var viewBoxMatrix = SvgHelper.GetSvgViewBoxTransform(svgSymbol.ViewBox, svgSymbol.AspectRatio, x, y, width, height);
SKMatrix.Concat(ref matrix, ref matrix, ref viewBoxMatrix);
}
public static SymbolDrawable Create(SvgSymbol svgSymbol, float x, float y, float width, float height, SKRect skViewport, DrawableBase?parent, IAssetLoader assetLoader, HashSet <Uri>?references, DrawAttributes ignoreAttributes)
{
var drawable = new SymbolDrawable(assetLoader, references)
{
Element = svgSymbol,
Parent = parent,
IgnoreAttributes = ignoreAttributes
};
drawable.IsDrawable = drawable.CanDraw(svgSymbol, drawable.IgnoreAttributes) && drawable.HasFeatures(svgSymbol, drawable.IgnoreAttributes);
if (!drawable.IsDrawable)
{
return(drawable);
}
if (svgSymbol.CustomAttributes.TryGetValue("width", out var _widthString))
{
if (new SvgUnitConverter().ConvertFromString(_widthString) is SvgUnit _width)
{
width = _width.ToDeviceValue(UnitRenderingType.Horizontal, svgSymbol, skViewport);
}
}
if (svgSymbol.CustomAttributes.TryGetValue("height", out var heightString))
{
if (new SvgUnitConverter().ConvertFromString(heightString) is SvgUnit _height)
{
height = _height.ToDeviceValue(UnitRenderingType.Vertical, svgSymbol, skViewport);
}
}
var svgOverflow = SvgOverflow.Hidden;
if (svgSymbol.TryGetAttribute("overflow", out string overflowString))
{
if (new SvgOverflowConverter().ConvertFromString(overflowString) is SvgOverflow _svgOverflow)
{
svgOverflow = _svgOverflow;
}
}
switch (svgOverflow)
{
case SvgOverflow.Auto:
case SvgOverflow.Visible:
case SvgOverflow.Inherit:
break;
default:
drawable.Overflow = SKRect.Create(x, y, width, height);
break;
}
drawable.CreateChildren(svgSymbol, skViewport, drawable, assetLoader, references, ignoreAttributes);
drawable.Initialize(x, y, width, height);
return(drawable);
}
public SymbolDrawable(SvgSymbol svgSymbol, float x, float y, float width, float height, SKRect skOwnerBounds, Drawable?root, Drawable?parent, Attributes ignoreAttributes)
: base(svgSymbol, root, parent)
{
IgnoreAttributes = ignoreAttributes;
IsDrawable = CanDraw(svgSymbol, IgnoreAttributes) && HasFeatures(svgSymbol, IgnoreAttributes);
if (!IsDrawable)
{
return;
}
if (svgSymbol.CustomAttributes.TryGetValue("width", out string?_widthString))
{
if (new SvgUnitConverter().ConvertFromString(_widthString) is SvgUnit _width)
{
width = _width.ToDeviceValue(UnitRenderingType.Horizontal, svgSymbol, skOwnerBounds);
}
}
if (svgSymbol.CustomAttributes.TryGetValue("height", out string?heightString))
{
if (new SvgUnitConverter().ConvertFromString(heightString) is SvgUnit _height)
{
height = _height.ToDeviceValue(UnitRenderingType.Vertical, svgSymbol, skOwnerBounds);
}
}
SvgOverflow svgOverflow = SvgOverflow.Hidden;
if (svgSymbol.TryGetAttribute("overflow", out string overflowString))
{
if (new SvgOverflowConverter().ConvertFromString(overflowString) is SvgOverflow _svgOverflow)
{
svgOverflow = _svgOverflow;
}
}
switch (svgOverflow)
{
case SvgOverflow.Auto:
case SvgOverflow.Visible:
case SvgOverflow.Inherit:
break;
default:
Overflow = SKRect.Create(x, y, width, height);
break;
}
CreateChildren(svgSymbol, skOwnerBounds, root, this, ignoreAttributes);
IsAntialias = SvgPaintingExtensions.IsAntialias(svgSymbol);
TransformedBounds = SKRect.Empty;
CreateTransformedBounds();
Transform = SvgTransformsExtensions.ToSKMatrix(svgSymbol.Transforms);
var skMatrixViewBox = SvgTransformsExtensions.ToSKMatrix(svgSymbol.ViewBox, svgSymbol.AspectRatio, x, y, width, height);
Transform = Transform.PreConcat(skMatrixViewBox);
Fill = null;
Stroke = null;
// TODO: Transform _skBounds using _skMatrix.
TransformedBounds = Transform.MapRect(TransformedBounds);
}
public static SymbolDrawable Create(SvgSymbol svgSymbol, float x, float y, float width, float height, Rect skOwnerBounds, DrawableBase?parent, IAssetLoader assetLoader, Attributes ignoreAttributes)
{
var drawable = new SymbolDrawable(assetLoader)
{
Element = svgSymbol,
Parent = parent,
IgnoreAttributes = ignoreAttributes
};
drawable.IsDrawable = drawable.CanDraw(svgSymbol, drawable.IgnoreAttributes) && drawable.HasFeatures(svgSymbol, drawable.IgnoreAttributes);
if (!drawable.IsDrawable)
{
return(drawable);
}
if (svgSymbol.CustomAttributes.TryGetValue("width", out var _widthString))
{
if (new SvgUnitConverter().ConvertFromString(_widthString) is SvgUnit _width)
{
width = _width.ToDeviceValue(UnitRenderingType.Horizontal, svgSymbol, skOwnerBounds);
}
}
if (svgSymbol.CustomAttributes.TryGetValue("height", out var heightString))
{
if (new SvgUnitConverter().ConvertFromString(heightString) is SvgUnit _height)
{
height = _height.ToDeviceValue(UnitRenderingType.Vertical, svgSymbol, skOwnerBounds);
}
}
var svgOverflow = SvgOverflow.Hidden;
if (svgSymbol.TryGetAttribute("overflow", out string overflowString))
{
if (new SvgOverflowConverter().ConvertFromString(overflowString) is SvgOverflow _svgOverflow)
{
svgOverflow = _svgOverflow;
}
}
switch (svgOverflow)
{
case SvgOverflow.Auto:
case SvgOverflow.Visible:
case SvgOverflow.Inherit:
break;
default:
drawable.Overflow = Rect.Create(x, y, width, height);
break;
}
drawable.CreateChildren(svgSymbol, skOwnerBounds, drawable, assetLoader, ignoreAttributes);
drawable.IsAntialias = SvgModelExtensions.IsAntialias(svgSymbol);
drawable.TransformedBounds = Rect.Empty;
drawable.CreateTransformedBounds();
drawable.Transform = SvgModelExtensions.ToMatrix(svgSymbol.Transforms);
var skMatrixViewBox = SvgModelExtensions.ToMatrix(svgSymbol.ViewBox, svgSymbol.AspectRatio, x, y, width, height);
drawable.Transform = drawable.Transform.PreConcat(skMatrixViewBox);
drawable.Fill = null;
drawable.Stroke = null;
// TODO: Transform _skBounds using _skMatrix.
drawable.TransformedBounds = drawable.Transform.MapRect(drawable.TransformedBounds);
return(drawable);
}
