gfx/2d/ScaledFontFontconfig.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef MOZILLA_GFX_SCALEDFONTFONTCONFIG_H_
   8 #define MOZILLA_GFX_SCALEDFONTFONTCONFIG_H_
   9
  10 #include "ScaledFontBase.h"
  11
  12 #include <cairo-ft.h>
  13
  14 namespace mozilla {
  15 namespace gfx {
  16
  17 class NativeFontResourceFontconfig;
  18 class UnscaledFontFontconfig;
  19
  20 class ScaledFontFontconfig : public ScaledFontBase {
  21  public:
  22   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(ScaledFontFontconfig, override)
  23   ScaledFontFontconfig(RefPtr<SharedFTFace>&& aFace, FcPattern* aPattern,
  24                        const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize);
  25
  26   FontType GetType() const override { return FontType::FONTCONFIG; }
  27
  28 #ifdef USE_SKIA
  29   SkTypeface* CreateSkTypeface() override;
  30   void SetupSkFontDrawOptions(SkFont& aFont) override;
  31 #endif
  32
  33   AntialiasMode GetDefaultAAMode() override;
  34
  35   bool UseSubpixelPosition() const;
  36
  37   bool CanSerialize() override { return true; }
  38
  39   bool GetFontInstanceData(FontInstanceDataOutput aCb, void* aBaton) override;
  40
  41   bool GetWRFontInstanceOptions(
  42       Maybe<wr::FontInstanceOptions>* aOutOptions,
  43       Maybe<wr::FontInstancePlatformOptions>* aOutPlatformOptions,
  44       std::vector<FontVariation>* aOutVariations) override;
  45
  46   bool HasVariationSettings() override;
  47
  48  protected:
  49 #ifdef USE_CAIRO_SCALED_FONT
  50   cairo_font_face_t* CreateCairoFontFace(
  51       cairo_font_options_t* aFontOptions) override;
  52 #endif
  53
  54  private:
  55   friend class NativeFontResourceFontconfig;
  56   friend class UnscaledFontFontconfig;
  57
  58   struct InstanceData {
  59     enum {
  60       AUTOHINT = 1 << 0,
  61       EMBEDDED_BITMAP = 1 << 1,
  62       EMBOLDEN = 1 << 2,
  63       HINT_METRICS = 1 << 3,
  64       LCD_VERTICAL = 1 << 4,
  65       SUBPIXEL_BGR = 1 << 5,
  66     };
  67
  68     explicit InstanceData(FcPattern* aPattern);
  69     InstanceData(const wr::FontInstanceOptions* aOptions,
  70                  const wr::FontInstancePlatformOptions* aPlatformOptions);
  71
  72     void SetupFontOptions(cairo_font_options_t* aFontOptions,
  73                           int* aOutLoadFlags,
  74                           unsigned int* aOutSynthFlags) const;
  75
  76     uint8_t mFlags;
  77     AntialiasMode mAntialias;
  78     FontHinting mHinting;
  79     uint8_t mLcdFilter;
  80   };
  81
  82   ScaledFontFontconfig(RefPtr<SharedFTFace>&& aFace,
  83                        const InstanceData& aInstanceData,
  84                        const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize);
  85
  86   RefPtr<SharedFTFace> mFace;
  87   InstanceData mInstanceData;
  88 };
  89
  90 }  // namespace gfx
  91 }  // namespace mozilla
  92
  93 #endif /* MOZILLA_GFX_SCALEDFONTFONTCONFIG_H_ */