/// <summary>
/// Creates a run reflecting the current context settings.
/// </summary>
/// <returns></returns>
public Run CreateRun(string text)
{
var run = new Run {
Text = text
};
if (FontSize.HasValue)
{
run.FontSize = FontSize.Value;
}
if (FontWeight.HasValue)
{
run.FontWeight = FontWeight.Value;
}
if (FontStyle.HasValue)
{
run.FontStyle = FontStyle.Value;
}
if (FontVariants.HasValue)
{
Typography.SetVariants(run, FontVariants.Value);
}
if (Foreground != null)
{
run.Foreground = Foreground;
}
if (FontFamily != null)
{
run.FontFamily = FontFamily;
}
run.TextDecorations = TextDecorations;
return(run);
}
public override List <Run> DisplayText()
{
List <Run> display = new List <Run>();
display.Add(new Run()
{
Text = "("
});
foreach (Element e in Elements)
{
display.AddRange(e.DisplayText());
}
display.Add(new Run()
{
Text = ")"
});
if (Subscript > 1)
{
Run r = new Run()
{
Text = Subscript.ToString()
};
Typography.SetVariants(r, Windows.UI.Xaml.FontVariants.Subscript);
display.Add(r);
}
return(display);
}
private Inline CreateSubscript(HtmlNode node)
{
if (string.IsNullOrEmpty(node.InnerText.Trim()))
{
return(null);
}
var run = new Run()
{
Text = node.InnerText.Trim()
};
Typography.SetVariants(run, FontVariants.Subscript);
return(run);
}
private Inline CreateSuperscript(HtmlNode node)
{
if (node.Descendants().Any(p => p.Name == "a"))
{
var linkNode = node.Descendants().Where(p => p.Name == "a").FirstOrDefault();
var hyp = CreateHyperLink(linkNode, true);
return(hyp);
}
else
{
if (string.IsNullOrEmpty(node.InnerText.Trim()))
{
return(null);
}
var run = new Run()
{
Text = node.InnerText.Trim()
};
Typography.SetVariants(run, FontVariants.Superscript);
return(run);
}
}
public override List <Run> DisplayText()
{
List <Run> display = new List <Run>();
display.Add(new Run()
{
Text = Symbol
});
if (Subscript > 1)
{
Run r = new Run()
{
Text = Subscript.ToString()
};
Typography.SetVariants(r, Windows.UI.Xaml.FontVariants.Subscript);
display.Add(r);
}
if (Charge != 0)
{
if (Charge < 0)
{
//This won't convert a - to a ⁻ for some reason?
Run r1 = new Run()
{
Text = "⁻"
};
display.Add(r1);
}
Run r = new Run()
{
Text = Math.Abs(Charge).ToString()
};
Typography.SetVariants(r, Windows.UI.Xaml.FontVariants.Superscript);
display.Add(r);
}
return(display);
}
static void AddInline(TextBlock textBlock, Forms9Patch.Label label, MetaFont metaFont, string text, int startIndex, int length)
{
var run = new Run();
run.Text = text.Substring(startIndex, length);
run.FontSize = metaFont.Size;
run.FontWeight = metaFont.Bold ? Windows.UI.Text.FontWeights.Bold : Windows.UI.Text.FontWeights.Normal;
run.FontStyle = metaFont.Italic ? Windows.UI.Text.FontStyle.Italic : Windows.UI.Text.FontStyle.Normal;
if (TextDecorationsPresent && metaFont.Strikethrough)
{
ApplyTextDecorations(run, Decoration.Strikethrough);
}
switch (metaFont.Baseline)
{
case FontBaseline.Numerator:
run.FontFamily = new Windows.UI.Xaml.Media.FontFamily("Cambria");
Typography.SetVariants(run, Windows.UI.Xaml.FontVariants.Superscript);
break;
case FontBaseline.Superscript:
run.FontFamily = new Windows.UI.Xaml.Media.FontFamily("Cambria");
Typography.SetVariants(run, Windows.UI.Xaml.FontVariants.Superscript);
break;
case FontBaseline.Denominator:
run.FontFamily = new Windows.UI.Xaml.Media.FontFamily("Cambria");
Typography.SetVariants(run, Windows.UI.Xaml.FontVariants.Subscript);
break;
case FontBaseline.Subscript:
run.FontFamily = new Windows.UI.Xaml.Media.FontFamily("Cambria");
Typography.SetVariants(run, Windows.UI.Xaml.FontVariants.Subscript);
break;
default:
if (metaFont.Family != null)
{
run.FontFamily = new Windows.UI.Xaml.Media.FontFamily(FontService.ReconcileFontFamily(metaFont.Family));
}
break;
}
if (!metaFont.BackgroundColor.IsDefaultOrTransparent())
{
try
{
textBlock.ApplyBackgroundColor(metaFont.BackgroundColor, startIndex, length);
}
catch (Exception)
{
//throw new Exception("It appears that this Xamarin.Forms.UWP app was built with a Windows TargetVersion < 10.0.16299.0 (Windows 10 Fall Creators Update). 10.0.16299.0 is needed to support Forms9Patch.Label.HtmlText background color attributes.", e);
}
}
if (metaFont.IsActionEmpty())
{
run.Foreground = new Windows.UI.Xaml.Media.SolidColorBrush(metaFont.TextColor.ToWindowsColor());
if (TextDecorationsPresent && metaFont.Underline)
{
ApplyTextDecorations(run, Decoration.Underline);
}
textBlock.Inlines.Add(run);
}
else
{
run.Foreground = new Windows.UI.Xaml.Media.SolidColorBrush(Xamarin.Forms.Color.Blue.ToWindowsColor());
if (TextDecorationsPresent)
{
ApplyTextDecorations(run, Decoration.Underline);
}
var hyperlink = new Hyperlink();
hyperlink.Inlines.Add(run);
hyperlink.Click += (Hyperlink sender, HyperlinkClickEventArgs args) => label.Tap(metaFont.Action.Id, metaFont.Action.Href);
textBlock.Inlines.Add(hyperlink);
}
}
private static IEnumerable <Inline> Parse(IEnumerable <XNode> nodes, FontFamily fontFamily, Brush fontColor, FontWeight fontWeight, FontStyle fontStyle, TextDecorations textDecoration, FontVariants fontVariants)
{
foreach (var current in nodes)
{
switch (current)
{
case XText xText:
var run = new Run()
{
Text = xText.Value, FontWeight = fontWeight, FontStyle = fontStyle, TextDecorations = textDecoration
};
if (fontFamily != null)
{
run.FontFamily = fontFamily;
}
if (fontColor != null)
{
run.Foreground = fontColor;
}
Typography.SetVariants(run, fontVariants);
yield return(run);
break;
case XElement xElement:
{
switch (xElement.Name.LocalName.ToLower())
{
case "b":
case "strong":
{
FontWeight newFontWeight = FontWeights.Bold;
var weight = xElement.Attribute("weight")?.Value;
if (!string.IsNullOrEmpty(weight))
{
switch (weight.ToLower())
{
case "950":
case "extrablack":
newFontWeight = FontWeights.ExtraBlack;
break;
case "900":
case "black":
newFontWeight = FontWeights.Black;
break;
case "800":
case "extrabold":
newFontWeight = FontWeights.ExtraBold;
break;
case "700":
case "bold":
newFontWeight = FontWeights.Bold;
break;
case "600":
case "semibold":
newFontWeight = FontWeights.SemiBold;
break;
case "500":
case "medium":
newFontWeight = FontWeights.Medium;
break;
case "400":
case "normal":
newFontWeight = FontWeights.Normal;
break;
case "350":
case "semilight":
newFontWeight = FontWeights.SemiLight;
break;
case "300":
case "light":
newFontWeight = FontWeights.Light;
break;
case "200":
case "extralight":
newFontWeight = FontWeights.ExtraLight;
break;
case "100":
case "thin":
newFontWeight = FontWeights.Thin;
break;
}
}
foreach (var item in Parse(xElement.Nodes(), fontFamily, fontColor, newFontWeight, fontStyle, textDecoration, fontVariants))
{
yield return(item);
}
break;
}
case "em":
case "i":
case "cite":
case "dfn":
foreach (var item in Parse(xElement.Nodes(), fontFamily, fontColor, fontWeight, FontStyle.Italic, textDecoration, fontVariants))
{
yield return(item);
}
break;
case "u":
foreach (var item in Parse(xElement.Nodes(), fontFamily, fontColor, fontWeight, fontStyle, TextDecorations.Underline, fontVariants))
{
yield return(item);
}
break;
case "s":
case "strike":
case "del":
foreach (var item in Parse(xElement.Nodes(), fontFamily, fontColor, fontWeight, fontStyle, TextDecorations.Strikethrough, fontVariants))
{
yield return(item);
}
break;
case "font":
{
Brush newFontColor = null;
FontFamily newFontFamily = null;
var colorStr = xElement.Attribute("color")?.Value;
if (!string.IsNullOrEmpty(colorStr))
{
try
{
var color = XamlBindingHelper.ConvertValue(typeof(Windows.UI.Color), colorStr) as Color?;
if (color.HasValue)
{
newFontColor = new SolidColorBrush()
{
Color = color.Value
};
}
}
catch { }
}
var faceStr = xElement.Attribute("face")?.Value;
if (!string.IsNullOrEmpty(faceStr))
{
newFontFamily = new FontFamily(faceStr);
}
foreach (var item in Parse(xElement.Nodes(), newFontFamily ?? fontFamily, newFontColor ?? fontColor, fontWeight, fontStyle, textDecoration, fontVariants))
{
yield return(item);
}
}
break;
case "tt":
{
foreach (var item in Parse(xElement.Nodes(), new FontFamily("Consolas"), fontColor, fontWeight, fontStyle, textDecoration, fontVariants))
{
yield return(item);
}
}
break;
case "sup":
{
foreach (var item in Parse(xElement.Nodes(), fontFamily, fontColor, fontWeight, fontStyle, textDecoration, FontVariants.Superscript))
{
yield return(item);
}
}
break;
case "sub":
{
foreach (var item in Parse(xElement.Nodes(), fontFamily, fontColor, fontWeight, fontStyle, textDecoration, FontVariants.Subscript))
{
yield return(item);
}
}
break;
case "br":
{
yield return(new LineBreak());
}
break;
case "a":
{
var href = xElement.Attribute("href")?.Value;
if (!string.IsNullOrEmpty(href))
{
var hyperlink = new Hyperlink()
{
NavigateUri = new Uri(href),
UnderlineStyle = UnderlineStyle.None
};
foreach (var item in Parse(xElement.Nodes(), fontFamily, fontColor, fontWeight, fontStyle, textDecoration, fontVariants))
{
hyperlink.Inlines.Add(item);
}
yield return(hyperlink);
}
else
{
//ignore the hyperlink
foreach (var item in Parse(xElement.Nodes(), fontFamily, fontColor, fontWeight, fontStyle, textDecoration, fontVariants))
{
yield return(item);
}
}
}
break;
default:
//ignore the element
foreach (var item in Parse(xElement.Nodes(), fontFamily, fontColor, fontWeight, fontStyle, textDecoration, fontVariants))
{
yield return(item);
}
break;
}
}
break;
}
}
}
public void Typo3(object sender, RoutedEventArgs e)
{
Typography.SetVariants(fd1, FontVariants.Normal);
Typography.SetCapitals(fd1, FontCapitals.Normal);
Typography.SetHistoricalForms(fd1, true);
}
public void typo2(object sender, RoutedEventArgs e)
{
Typography.SetHistoricalForms(fd1, false);
Typography.SetCapitals(fd1, FontCapitals.Normal);
Typography.SetVariants(fd1, FontVariants.Subscript);
}
