public static NSFont ToNsFont(this Font font)
{
if (font == null)
{
return(NSFont.SystemFontOfSize(NSFont.SystemFontSize));
}
NSFontManager fontManager = NSFontManager.SharedFontManager;
NSFont theFont = fontManager.FontWithFamily(font.Name, getFontTraits(font), 0, font.Size);
return(theFont);
}
public static NSFont GetSystemFontOfSize(nfloat fontSize, nfloat weight)
{
// not possible to use NSFont.SystemFontOfSize because it supported only since macOS 10.11+
NSFont f = NSFont.SystemFontOfSize(fontSize);//, weight);
NSFontManager manger = NSFontManager.SharedFontManager;
// Full details here – https://developer.apple.com/library/mac/documentation/Cocoa/Reference/ApplicationKit/Classes/NSFontManager_Class/#//apple_ref/occ/instm/NSFontManager/convertWeight:ofFont:
//
// 1 – ultralight
// 2 – thin
// 3 – light, extralight
// 4 – book
// 5 – regular, display
// 6 – medium
// 7 – demi, demibold
// 8 – semi, semibold
// 9 – bold
// 10 – extra, extrabold
// 11 – heavy
// 12 – black
// 13 – ultrablack
// 14 – extrablack
int w = 5;
if (weight == NSFontWeight.UltraLight)
{
w = 1;
}
else if (weight == NSFontWeight.Thin)
{
w = 2;
}
else if (weight == NSFontWeight.Light)
{
w = 3;
}
else if (weight == NSFontWeight.Regular)
{
w = 5;
}
else if (weight == NSFontWeight.Medium)
{
w = 6;
}
else if (weight == NSFontWeight.Semibold)
{
w = 8;
}
else if (weight == NSFontWeight.Bold)
{
w = 9;
}
else if (weight == NSFontWeight.Heavy)
{
w = 11;
}
else if (weight == NSFontWeight.Black)
{
w = 12;
}
NSFont ret = manger.FontWithFamily(f.FamilyName, manger.TraitsOfFont(f), w, fontSize);
return(ret);
}