higan/hiro/cocoa/font.cpp

#if defined(Hiro_Font)

namespace hiro {

auto pFont::size(const Font& font, const string& text) -> Size {
  @autoreleasepool {
    if(NSFont* nsFont = create(font)) {
      return size(nsFont, text);
    }
  }
  return {0, 0};
}

auto pFont::size(NSFont* font, const string& text) -> Size {
  @autoreleasepool {
    NSString* cocoaText = [NSString stringWithUTF8String:text];
    NSDictionary* fontAttributes = [NSDictionary dictionaryWithObjectsAndKeys:font, NSFontAttributeName, nil];
    NSSize size = [cocoaText sizeWithAttributes:fontAttributes];
    return {(int)size.width, (int)size.height};
  }
}

auto pFont::family(const string& family) -> string {
  if(family == Font::Sans ) return "Lucida Grande";
  if(family == Font::Serif) return "Georgia";
  if(family == Font::Mono ) return "Menlo";
  return "Lucida Grande";
}

auto pFont::create(const Font& font) -> NSFont* {
  auto fontName = family(font.family());
  NSString* family = [NSString stringWithUTF8String:fontName];
  CGFloat size = Application::scale(font.size() ? font.size() : 8);
  NSFontTraitMask traits = 0;

  if(font.bold()) traits |= NSBoldFontMask;
  if(font.italic()) traits |= NSItalicFontMask;

//note: below properties are not exposed by hiro::Font; traits are saved here for possible future use
//if(font.narrow()) traits |= NSNarrowFontMask;
//if(font.expanded()) traits |= NSExpandedFontMask;
//if(font.condensed()) traits |= NSCondensedFontMask;
//if(font.smallCaps()) traits |= NSSmallCapsFontMask;

  size *= 1.5;  //scale to point sizes (for consistency with other operating systems)
  return [[NSFontManager sharedFontManager] fontWithFamily:family traits:traits weight:5 size:size];
}

}

#endif