/// <summary>
/// Creates a shaped symbol.
/// </summary>
/// <param name="textRun">The symbol run to shape.</param>
/// <param name="flowDirection">The flow direction.</param>
/// <returns>
/// The shaped symbol.
/// </returns>
internal static ShapedTextCharacters CreateSymbol(TextRun textRun, FlowDirection flowDirection)
{
var textShaper = TextShaper.Current;
var glyphTypeface = textRun.Properties !.Typeface.GlyphTypeface;
var fontRenderingEmSize = textRun.Properties.FontRenderingEmSize;
var cultureInfo = textRun.Properties.CultureInfo;
var shaperOptions = new TextShaperOptions(glyphTypeface, fontRenderingEmSize, (sbyte)flowDirection, cultureInfo);
var shapedBuffer = textShaper.ShapeText(textRun.Text, shaperOptions);
return(new ShapedTextCharacters(shapedBuffer, textRun.Properties));
}
private static IReadOnlyList <ShapedTextCharacters> ShapeTogether(
IReadOnlyList <ShapeableTextCharacters> textRuns, ReadOnlySlice <char> text, TextShaperOptions options)
{
var shapedRuns = new List <ShapedTextCharacters>(textRuns.Count);
var shapedBuffer = TextShaper.Current.ShapeText(text, options);
for (var i = 0; i < textRuns.Count; i++)
{
var currentRun = textRuns[i];
var splitResult = shapedBuffer.Split(currentRun.Text.Length);
shapedRuns.Add(new ShapedTextCharacters(splitResult.First, currentRun.Properties));
shapedBuffer = splitResult.Second !;
}
return(shapedRuns);
}
/// <inheritdoc cref="ITextShaperImpl.ShapeText"/>
public ShapedBuffer ShapeText(ReadOnlySlice <char> text, TextShaperOptions options)
{
return(_platformImpl.ShapeText(text, options));
}