public static void AddTo(SKTextRunLookup lookup)
{
if (lookup == null)
{
throw new ArgumentNullException(nameof(lookup));
}
lookup.AddTypeface(GetTypeface(), Characters);
}
public static IEnumerable <SKTextRun> Create(string text, SKTextRunLookup lookup)
{
var runs = new List <SKTextRun>();
if (string.IsNullOrEmpty(text))
{
return(runs);
}
var start = 0;
while (start < text.Length)
{
var startIndex = text.IndexOf(IconTemplateBegin, start, StringComparison.Ordinal);
if (startIndex == -1)
{
break;
}
var endIndex = text.IndexOf(IconTemplateEnd, startIndex, StringComparison.Ordinal);
if (endIndex == -1)
{
break;
}
var pre = text.Substring(start, startIndex - start);
var post = text.Substring(endIndex + IconTemplateEnd.Length);
var expression = text.Substring(startIndex + IconTemplateBegin.Length, endIndex - startIndex - IconTemplateEnd.Length);
var segments = expression.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
expression = segments.FirstOrDefault();
SKColor?color = null;
foreach (var item in segments)
{
var pair = item.Split(new[] { '=' }, StringSplitOptions.RemoveEmptyEntries);
switch (pair[0].ToLower())
{
case "color":
if (pair.Length > 1 && !string.IsNullOrWhiteSpace(pair[1]))
{
color = SKColor.Parse(pair[1]);
}
break;
}
}
if (!string.IsNullOrEmpty(pre))
{
runs.Add(new SKTextRun(pre));
}
if (lookup.TryLookup(expression, out var typeface, out var character))
{
runs.Add(new SKTextRun(character)
{
Typeface = typeface, Color = color
});
}
public static void RemoveIonIcons(this SKTextRunLookup lookup) => lookup.RemoveTypeface(entry.Value);
public static void AddIonIcons(this SKTextRunLookup lookup) => lookup.AddTypeface(entry.Value);
public static void DrawIconifiedText(this SKCanvas canvas, string text, float x, float y, SKTextRunLookup lookup, SKPaint paint)
{
if (canvas == null)
{
throw new ArgumentNullException(nameof(canvas));
}
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
if (paint == null)
{
throw new ArgumentNullException(nameof(paint));
}
var runs = SKTextRun.Create(text, lookup);
canvas.DrawText(runs, x, y, paint);
}
public static void AddMaterialDesignIcons(this SKTextRunLookup lookup) => lookup.AddTypeface(entry.Value);
public static void RemoveFontAwesome(this SKTextRunLookup lookup) => lookup.RemoveTypeface(entry.Value);
public static void AddFontAwesome(this SKTextRunLookup lookup) => lookup.AddTypeface(entry.Value);