third_party/WebKit/Source/platform/fonts/FontRenderStyle.h

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  29
  30 #ifndef FontRenderStyle_h
  31 #define FontRenderStyle_h
  32
  33 namespace blink {
  34
  35 // FontRenderStyle describes the user's preferences for rendering a font at a
  36 // given size.
  37 struct FontRenderStyle {
  38     enum {
  39         NoPreference = 2,
  40     };
  41
  42     FontRenderStyle()
  43         : useBitmaps(0)
  44         , useAutoHint(0)
  45         , useHinting(0)
  46         , hintStyle(0)
  47         , useAntiAlias(0)
  48         , useSubpixelRendering(0)
  49         , useSubpixelPositioning(0) { }
  50
  51     bool operator==(const FontRenderStyle& a) const
  52     {
  53         return useBitmaps == a.useBitmaps
  54             && useAutoHint == a.useAutoHint
  55             && useHinting == a.useHinting
  56             && hintStyle == a.hintStyle
  57             && useAntiAlias == a.useAntiAlias
  58             && useSubpixelRendering == a.useSubpixelRendering
  59             && useSubpixelPositioning == a.useSubpixelPositioning;
  60     }
  61
  62     // Each of the use* members below can take one of three values:
  63     //   0: off
  64     //   1: on
  65     //   NoPreference: no preference expressed
  66     char useBitmaps; // use embedded bitmap strike if possible
  67     char useAutoHint; // use 'auto' hinting (FreeType specific)
  68     char useHinting; // hint glyphs to the pixel grid
  69     char hintStyle; // level of hinting, 0..3
  70     char useAntiAlias; // antialias glyph shapes
  71     char useSubpixelRendering; // use subpixel rendering (partially-filled pixels)
  72     char useSubpixelPositioning; // use subpixel positioning (fractional X positions for glyphs)
  73 };
  74
  75 } // namespace blink
  76
  77 #endif // FontRenderStyle_h