/// <summary>
/// Merges partial styles.
/// </summary>
public static void Merge(PartialFontStyle style1, PartialFontStyle style2, float weight,
out IFill fill, out Pen pen)
{
if (style1 == null && style2 == null)
{
fill = null;
pen = null;
return;
}
if (style2 != null && style1 == null)
{
Merge(style2, style1, 1.0f - weight, out fill, out pen);
return;
}
if (style2 == null)
{
fill = style1.Fill;
pen = style1.Pen;
return;
}
fill = BlendedFill.BlendFills(style1.Fill, style2.Fill, weight);
pen = Pen.BlendPens(style1.Pen, style2.Pen, weight);
return;
}
/// <summary>
/// Blends styles.
/// </summary>
public static Pen Merge(BorderStyle style1, BorderStyle style2, float weight,
out ITransform transform, out IMapper mapper)
{
if (style1 == null && style2 == null)
{
transform = null;
mapper = null;
return(null);
}
if (style2 != null && style1 == null)
{
return(Merge(style2, style1, 1.0f - weight, out transform, out mapper));
}
if (style2 == null)
{
transform = style1.MappingTransform;
mapper = style1.Mapper;
return(style1.Pen);
}
transform = BlendTransform.BlendTransforms(style1.MappingTransform,
style2.MappingTransform, weight);
mapper = style1.Mapper;
return(Pen.BlendPens(style1.Pen, style2.Pen, weight));
}
/// <summary>
/// Merges font styles.
/// </summary>
/// <returns></returns>
public static Font Merge(FontStyle style1, FontStyle style2, float weight,
out float size, out float lineSpacing, out TextOptions options,
out Pen pen, out IFill fill)
{
// No font.
if (style1 == null && style2 == null)
{
size = 0;
lineSpacing = 0;
options = TextOptions.None;
pen = null;
fill = null;
return(null);
}
// Special case second style only.
if (style1 == null && style2 != null)
{
return(Merge(style2, style1, 1.0f - weight, out size,
out lineSpacing, out options, out pen, out fill));
}
if (style1 != null && style2 == null)
{
size = style1.Size;
lineSpacing = style1.LineSpacing;
options = style1.TextOptions;
pen = style1.Pen;
fill = style1.Fill;
return(style1.Font);
}
float w1 = 1.0f - weight;
size = style1.Size * w1 + style2.Size * weight;
lineSpacing = style1.LineSpacing * w1 + style2.LineSpacing * weight;
options = style1.TextOptions;
pen = Pen.BlendPens(style1.Pen, style2.Pen, weight);
fill = BlendedFill.BlendFills(style1.Fill, style2.Fill, weight);
return(style1.Font);
}