/// <inheritdoc/>
public Size MeasureTexts(IList <string> texts, FontFamily fontFamily, double fontSize, FontWeight fontWeight, TextMeasurementMethod measurementMethod)
{
if (texts == null)
{
throw new ArgumentNullException(nameof(texts));
}
var maxWidth = 0.0;
var maxHeight = 0.0;
TextBlock textBlock = null;
for (var i = 0; i < texts.Count; ++i)
{
var text = texts[i];
Size size;
switch (measurementMethod)
{
case TextMeasurementMethod.GlyphTypeface:
GlyphTypeface glyphTypeface;
if (TryGetGlyphTypeface(fontFamily, FontStyles.Normal, fontWeight, FontStretches.Normal, out glyphTypeface))
{
size = MeasureTextSize(glyphTypeface, fontSize, text);
break;
}
// Fallback to TextBlock measurement method
goto case TextMeasurementMethod.TextBlock;
case TextMeasurementMethod.TextBlock:
if (textBlock == null)
{
textBlock = new TextBlock
{
FontFamily = fontFamily,
FontSize = fontSize,
FontWeight = fontWeight,
};
}
textBlock.Text = text;
textBlock.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
size = textBlock.DesiredSize;
break;
default:
throw new ArgumentOutOfRangeException(nameof(measurementMethod));
}
if (size.Width > maxWidth)
{
maxWidth = size.Width;
}
if (size.Height > maxHeight)
{
maxHeight = size.Height;
}
}
return(new Size(maxWidth, maxHeight));
}
/// <inheritdoc/>
public Size MeasureText(string text, FontFamily fontFamily, double fontSize, FontWeight fontWeight, TextMeasurementMethod measurementMethod)
{
if (string.IsNullOrEmpty(text))
{
return(Size.Empty);
}
switch (measurementMethod)
{
case TextMeasurementMethod.GlyphTypeface:
GlyphTypeface glyphTypeface;
if (TryGetGlyphTypeface(fontFamily, FontStyles.Normal, fontWeight, FontStretches.Normal, out glyphTypeface))
{
return(MeasureTextSize(glyphTypeface, fontSize, text));
}
// Fallback to TextBlock measurement method
goto case TextMeasurementMethod.TextBlock;
case TextMeasurementMethod.TextBlock:
var textBlock = new TextBlock
{
FontFamily = fontFamily,
FontSize = fontSize,
FontWeight = fontWeight,
Text = text,
};
textBlock.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
return(new Size(textBlock.DesiredSize.Width, textBlock.DesiredSize.Height));
default:
throw new ArgumentOutOfRangeException(nameof(measurementMethod));
}
}
