protected override void AddFontToDictionary(ResourceDictionary resourceDictionary, string appearanceCategory, string fontName, double fontSize)
{
if (appearanceCategory == "tooltip")
{
return;
}
if (fontSize <= 0)
{
fontSize = NSFont.SystemFontSize;
}
var pangoFontDescription = $"{fontName} {fontSize}";
NSFont nsFont;
try {
nsFont = GetNSFontFromPangoFontDescription(pangoFontDescription);
} catch (Exception e) {
nsFont = null;
LoggingService.LogInternalError(
$"Exception attempting to map Pango font description '{pangoFontDescription}' to an NSFont",
e);
}
if (nsFont == null)
{
LoggingService.LogWarning(
$"Unable to map Pango font description '{pangoFontDescription}' " +
$"to NSFont; falling back to system default at {fontSize} pt");
nsFont = NSFontWorkarounds.UserFixedPitchFontOfSize((nfloat)fontSize);
}
fontSize = nsFont.PointSize;
LoggingService.LogInfo($"Mapped Pango font description '{pangoFontDescription}' to NSFont '{nsFont}'");
resourceDictionary [ClassificationFormatDefinition.TypefaceId] = nsFont;
resourceDictionary [ClassificationFormatDefinition.FontRenderingSizeId] = fontSize;
}
public static NSFont GetFont(
this ResourceDictionary resourceDictionary,
bool respectScale = true)
{
NSFontDescriptor fontDescriptor = null;
nfloat fontSize = 0;
switch (resourceDictionary[TypefaceId])
{
case NSFontDescriptor fd:
fontDescriptor = fd;
break;
case NSFont rdFont:
fontDescriptor = rdFont.FontDescriptor;
fontSize = rdFont.PointSize;
break;
case string fontName:
fontDescriptor = NSFontWorkarounds
.FromFontName(fontName, 0)
.FontDescriptor;
break;
}
switch (resourceDictionary[FontRenderingSizeId])
{
case double d:
fontSize = (nfloat)d;
break;
case float f:
fontSize = f;
break;
case nfloat nf:
fontSize = nf;
break;
case int i:
fontSize = i;
break;
}
if (fontSize <= 0)
{
fontSize = NSFont.SystemFontSize;
}
if (respectScale && resourceDictionary[FontRenderingScaleId] is double scale)
{
fontSize *= (nfloat)scale;
}
var font = fontDescriptor == null
? NSFontWorkarounds.UserFixedPitchFontOfSize(fontSize)
: NSFontWorkarounds.FromDescriptor(fontDescriptor, fontSize);
NSFontTraitMask convertFontTraits = 0;
if (resourceDictionary.Contains(IsBoldId) &&
resourceDictionary[IsBoldId] is bool isBold &&
isBold)
{
convertFontTraits |= NSFontTraitMask.Bold;
}
if (resourceDictionary.Contains(IsItalicId) &&
resourceDictionary[IsItalicId] is bool isItalic &&
isItalic)
{
convertFontTraits |= NSFontTraitMask.Italic;
}
if (convertFontTraits != 0)
{
font = NSFontManager.SharedFontManager.ConvertFontWorkaround(
font,
convertFontTraits);
}
return(font);
}