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   SkTypeface* CreateSkTypeface() override;
  29   void SetupSkFontDrawOptions(SkFont& aFont) override;
  30
  31   AntialiasMode GetDefaultAAMode() override;
  32
  33   bool UseSubpixelPosition() const override;
  34
  35   bool CanSerialize() override { return true; }
  36
  37   bool MayUseBitmaps() override;
  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   cairo_font_face_t* CreateCairoFontFace(
  50       cairo_font_options_t* aFontOptions) override;
  51
  52  private:
  53   friend class NativeFontResourceFontconfig;
  54   friend class UnscaledFontFontconfig;
  55
  56   struct InstanceData {
  57     enum {
  58       AUTOHINT = 1 << 0,
  59       EMBEDDED_BITMAP = 1 << 1,
  60       EMBOLDEN = 1 << 2,
  61       HINT_METRICS = 1 << 3,
  62       LCD_VERTICAL = 1 << 4,
  63       SUBPIXEL_BGR = 1 << 5,
  64     };
  65
  66     explicit InstanceData(FcPattern* aPattern);
  67     InstanceData(const wr::FontInstanceOptions* aOptions,
  68                  const wr::FontInstancePlatformOptions* aPlatformOptions);
  69
  70     void SetupFontOptions(cairo_font_options_t* aFontOptions,
  71                           int* aOutLoadFlags,
  72                           unsigned int* aOutSynthFlags) const;
  73
  74     uint8_t mFlags;
  75     AntialiasMode mAntialias;
  76     FontHinting mHinting;
  77     uint8_t mLcdFilter;
  78   };
  79
  80   ScaledFontFontconfig(RefPtr<SharedFTFace>&& aFace,
  81                        const InstanceData& aInstanceData,
  82                        const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize);
  83
  84   RefPtr<SharedFTFace> mFace;
  85   InstanceData mInstanceData;
  86 };
  87
  88 }  // namespace gfx
  89 }  // namespace mozilla
  90
  91 #endif /* MOZILLA_GFX_SCALEDFONTFONTCONFIG_H_ */