private (bool, Size) GeRadius(CssReader reader, RadialGradientShape shape, ref RadialGradientFlags flags)
{
if (reader.CanRead)
{
var size = Dimensions.Zero;
if (shape == RadialGradientShape.Circle)
{
var radiusToken = reader.Read();
var isRadius = OffsetConverter.TryExtractOffset(radiusToken, out var radius);
if (isRadius)
{
size = new Dimensions(radius, radius);
reader.MoveNext();
}
}
if (shape == RadialGradientShape.Ellipse)
{
var radiusHToken = reader.Read();
var radiusVToken = reader.ReadNext();
var isRadiusH = OffsetConverter.TryExtractOffset(radiusHToken, out var radiusH);
var isRadiusV = OffsetConverter.TryExtractOffset(radiusVToken, out var radiusV);
if (isRadiusH && isRadiusV)
{
size = new Dimensions(radiusH, radiusV);
reader.MoveNext();
}
else
{
// Revert radiusVToken
reader.Rollback();
}
}
if (size != Dimensions.Zero)
{
if (size.Width.Type == OffsetType.Proportional)
{
FlagsHelper.Set(ref flags, WidthProportional);
}
if (size.Height.Type == OffsetType.Proportional)
{
FlagsHelper.Set(ref flags, HeightProportional);
}
return(true, new Size(size.Width.Value, size.Height.Value));
}
}
// Value -1 means undefined for RadialGradientShader
return(false, new Size(-1, -1));
}
public GradientBuilder AddRadialGradient(Point center, RadialGradientShape shape, RadialGradientSize size,
RadialGradientFlags flags = RadialGradientFlags.PositionProportional, bool isRepeating = false)
{
_lastGradient = new RadialGradient
{
Center = center,
Shape = shape,
Size = size,
Flags = flags,
IsRepeating = isRepeating,
Stops = new List <GradientStop>()
};
_gradients.Add(_lastGradient);
return(this);
}
private (bool, Dimensions) GeRadius(CssReader reader, RadialGradientShape shape)
{
if (reader.CanRead)
{
var size = Dimensions.Zero;
if (shape == RadialGradientShape.Circle)
{
var radiusToken = reader.Read();
var isRadius = Offset.TryParseWithUnit(radiusToken, out var radius);
if (isRadius)
{
size = new Dimensions(radius, radius);
reader.MoveNext();
}
}
if (shape == RadialGradientShape.Ellipse)
{
var radiusHToken = reader.Read();
var radiusVToken = reader.ReadNext();
var isRadiusH = Offset.TryParseWithUnit(radiusHToken, out var radiusH);
var isRadiusV = Offset.TryParseWithUnit(radiusVToken, out var radiusV);
if (isRadiusH && isRadiusV)
{
size = new Dimensions(radiusH, radiusV);
reader.MoveNext();
}
else
{
// Revert radiusVToken
reader.Rollback();
}
}
if (size != Dimensions.Zero)
{
return(true, size);
}
}
return(false, Dimensions.Zero);
}
public RadialGradientBuilder AddRadialGradient(
Point center,
RadialGradientShape shape,
RadialGradientSize size,
RadialGradientFlags flags = RadialGradientFlags.PositionProportional,
bool isRepeating = false)
{
var builder = new RadialGradientBuilder
{
Center = center,
Shape = shape,
Size = size,
Flags = flags,
IsRepeating = isRepeating
};
UseBuilder(builder);
return(builder);
}
public GradientBuilder AddRadialGradient(
Point center,
RadialGradientShape shape,
RadialGradientSize size,
RadialGradientFlags flags = RadialGradientFlags.PositionProportional,
bool isRepeating = false)
{
AddCachedStopsToLast();
var radialGradient = new RadialGradient
{
Center = center,
Shape = shape,
Size = size,
Flags = flags,
IsRepeating = isRepeating
};
_gradients.Add(radialGradient);
return(this);
}
