/// <summary>
/// Apply <see cref="Typeface"/> that build from <paramref name="classification"/> using
/// <paramref name="defaultFormatting"/> as fallback values
/// </summary>
private static TextFormattingRunProperties ApplyTypeFace(
TextFormattingRunProperties formatting, Classification classification, TextFormattingRunProperties defaultFormatting)
{
TextFormattingRunProperties ApplyTypeFace(TypeFaces mask, Typeface fallbackFace)
{
if (mask.Is(TypeFaces.Style) && !formatting.ItalicEmpty)
{
formatting = formatting.ClearItalic();
}
return(formatting.SetTypeface(new Typeface(
mask.Is(TypeFaces.Family) ? FontFamilyService.SupportedFamilies[classification.FontFamily] : fallbackFace.FontFamily,
mask.Is(TypeFaces.Style) ? FontStyleService.SupportedStyleByNames[classification.FontStyle] : fallbackFace.Style,
fallbackFace.Weight,
mask.Is(TypeFaces.Stretch) ? FontStretchService.SupportedStretches[classification.FontStretch] : fallbackFace.Stretch)));
}
if (formatting.TypefaceEmpty)
{
var faces = TypeFaces.Family | TypeFaces.Stretch;
switch (classification.FontStyle)
{
case FontStyleService.Italic when !formatting.Italic:
formatting = formatting.SetItalic(true);
break;
case FontStyleService.Normal when formatting.Italic:
formatting = formatting.SetItalic(false);
break;
default:
faces |= TypeFaces.Style;
break;
}
formatting = ApplyTypeFace(faces, defaultFormatting.Typeface);
}
else
{
var typeFace = formatting.Typeface;
if (!typeFace.Style.Equals(FontStyleService.SupportedStyleByNames[classification.FontStyle]) ||
!typeFace.FontFamily.Source.Equals(classification.FontFamily) ||
typeFace.Stretch.ToOpenTypeStretch() != classification.FontStretch)
{
formatting = ApplyTypeFace(TypeFaces.All, typeFace);
}
}
return(formatting);
}
TextFormattingRunProperties SetProperties(TextFormattingRunProperties format, StyleBase styleOption, double textSize)
{
var settings = styleOption;
var fontSize = textSize + settings.FontSize;
if (fontSize < 1)
{
fontSize = 1;
}
if (string.IsNullOrWhiteSpace(settings.Font) == false)
{
format = format.SetTypeface(new Typeface(settings.Font));
}
if (settings.FontSize != 0)
{
if (format.FontRenderingEmSizeEmpty || fontSize != format.FontRenderingEmSize)
{
format = format.SetFontRenderingEmSize(fontSize);
}
}
if (settings.Bold.HasValue)
{
if (format.BoldEmpty || settings.Bold != format.Bold)
{
format = format.SetBold(settings.Bold.Value);
}
}
if (settings.Italic.HasValue)
{
if (format.ItalicEmpty || settings.Italic != format.Italic)
{
format = format.SetItalic(settings.Italic.Value);
}
}
if (settings.ForegroundOpacity > 0)
{
format = format.SetForegroundOpacity(settings.ForegroundOpacity / 255.0);
}
if (settings.ForeColor.A > 0)
{
if (format.ForegroundBrushEmpty || (format.ForegroundBrush as SolidColorBrush)?.Color != settings.ForeColor)
{
format = format.SetForeground(settings.ForeColor);
}
}
if (settings.BackColor.A > 0)
{
var bc = settings.BackColor.A > 0 ? settings.BackColor
: format.BackgroundBrushEmpty == false && format.BackgroundBrush is SolidColorBrush ? (format.BackgroundBrush as SolidColorBrush).Color
: Colors.Transparent;
if (settings.BackgroundOpacity != 0)
{
format = format.SetBackgroundOpacity(settings.BackgroundOpacity / 255.0);
}
if (bc.A > 0)
{
var bb = format.BackgroundBrush as LinearGradientBrush;
switch (settings.BackgroundEffect)
{
case BrushEffect.Solid:
if (format.BackgroundBrushEmpty || (format.BackgroundBrush as SolidColorBrush)?.Color != bc)
{
format = format.SetBackground(bc);
}
break;
case BrushEffect.ToBottom:
if (bb == null || bb.StartPoint.Y > bb.EndPoint.Y || bb.GradientStops.Count != 2 ||
bb.GradientStops[0].Color != _BackColor || bb.GradientStops[1].Color != bc)
{
format = format.SetBackgroundBrush(new LinearGradientBrush(_BackColor, bc, 90));
}
break;
case BrushEffect.ToTop:
if (bb == null || bb.StartPoint.Y < bb.EndPoint.Y || bb.GradientStops.Count != 2 ||
bb.GradientStops[0].Color != bc || bb.GradientStops[1].Color != _BackColor)
{
format = format.SetBackgroundBrush(new LinearGradientBrush(bc, _BackColor, 90));
}
bb = new LinearGradientBrush(bc, _BackColor, 90);
break;
case BrushEffect.ToRight:
if (bb == null || bb.StartPoint.X >= bb.EndPoint.X || bb.GradientStops.Count != 2 ||
bb.GradientStops[0].Color != _BackColor || bb.GradientStops[1].Color != bc)
{
format = format.SetBackgroundBrush(new LinearGradientBrush(_BackColor, bc, 0));
}
break;
case BrushEffect.ToLeft:
if (bb == null || bb.StartPoint.X >= bb.EndPoint.X || bb.GradientStops.Count != 2 ||
bb.GradientStops[0].Color != bc || bb.GradientStops[1].Color != _BackColor)
{
format = format.SetBackgroundBrush(new LinearGradientBrush(bc, _BackColor, 0));
}
break;
default:
throw new NotImplementedException("Background effect not supported: " + settings.BackgroundEffect.ToString());
}
}
}
else if (settings.BackColor.A > 0)
{
if (format.BackgroundBrushEmpty || (format.BackgroundBrush as SolidColorBrush)?.Color != settings.BackColor)
{
format = format.SetBackground(settings.BackColor);
}
}
if (settings.Underline.HasValue || settings.Strikethrough.HasValue || settings.OverLine.HasValue)
{
var tdc = new TextDecorationCollection();
if (settings.Underline.GetValueOrDefault())
{
tdc.Add(TextDecorations.Underline);
}
if (settings.Strikethrough.GetValueOrDefault())
{
tdc.Add(TextDecorations.Strikethrough);
}
if (settings.OverLine.GetValueOrDefault())
{
tdc.Add(TextDecorations.OverLine);
}
format = format.SetTextDecorations(tdc);
}
return(format);
}
TextFormattingRunProperties SetProperties(TextFormattingRunProperties properties, StyleBase styleOption, double textSize)
{
var settings = styleOption;
var fontSize = textSize + settings.FontSize;
if (fontSize < 1)
{
fontSize = 1;
}
if (string.IsNullOrWhiteSpace(settings.Font) == false)
{
properties = properties.SetTypeface(new Typeface(settings.Font));
}
if (settings.FontSize != 0)
{
properties = properties.SetFontRenderingEmSize(fontSize);
}
if (settings.Bold.HasValue)
{
properties = properties.SetBold(settings.Bold.Value);
}
if (settings.Italic.HasValue)
{
properties = properties.SetItalic(settings.Italic.Value);
}
if (settings.ForeColor.A > 0)
{
if (settings.ForeColor.A == 255 && properties.ForegroundOpacityEmpty)
{
properties = properties.SetForeground(settings.ForeColor.Alpha(255));
}
else
{
properties = properties.SetForegroundOpacity(settings.ForeColor.A / 255.0)
.SetForeground(settings.ForeColor);
}
}
var bc = settings.BackColor.A > 0 ? settings.BackColor
: properties.BackgroundBrushEmpty == false && properties.BackgroundBrush is SolidColorBrush ? (properties.BackgroundBrush as SolidColorBrush).Color
: Colors.Transparent;
if (bc.A > 0)
{
if (settings.BackColor.A < 255 || properties.BackgroundOpacityEmpty == false)
{
properties = properties.SetBackgroundOpacity(bc.A / 255.0);
}
switch (settings.BackgroundEffect)
{
case BrushEffect.Solid:
properties = properties.SetBackground(bc);
break;
case BrushEffect.ToBottom:
properties = properties.SetBackgroundBrush(new LinearGradientBrush(_BackColor, bc, 90));
break;
case BrushEffect.ToTop:
properties = properties.SetBackgroundBrush(new LinearGradientBrush(bc, _BackColor, 90));
break;
case BrushEffect.ToRight:
properties = properties.SetBackgroundBrush(new LinearGradientBrush(_BackColor, bc, 0));
break;
case BrushEffect.ToLeft:
properties = properties.SetBackgroundBrush(new LinearGradientBrush(bc, _BackColor, 0));
break;
default:
break;
}
}
if (settings.Underline.HasValue || settings.Strikethrough.HasValue || settings.OverLine.HasValue)
{
var tdc = new TextDecorationCollection();
if (settings.Underline.GetValueOrDefault())
{
tdc.Add(TextDecorations.Underline);
}
if (settings.Strikethrough.GetValueOrDefault())
{
tdc.Add(TextDecorations.Strikethrough);
}
if (settings.OverLine.GetValueOrDefault())
{
tdc.Add(TextDecorations.OverLine);
}
properties = properties.SetTextDecorations(tdc);
}
return(properties);
}