gfx/2d/UnscaledFontDWrite.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_UNSCALEDFONTDWRITE_H_
   8 #define MOZILLA_GFX_UNSCALEDFONTDWRITE_H_
   9
  10 #include <dwrite.h>
  11
  12 #include "2D.h"
  13
  14 namespace mozilla {
  15 namespace gfx {
  16
  17 class ScaledFontDWrite;
  18
  19 class UnscaledFontDWrite final : public UnscaledFont {
  20  public:
  21   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(UnscaledFontDWrite, override)
  22   UnscaledFontDWrite(const RefPtr<IDWriteFontFace>& aFontFace,
  23                      const RefPtr<IDWriteFont>& aFont)
  24       : mFontFace(aFontFace), mFont(aFont) {}
  25
  26   FontType GetType() const override { return FontType::DWRITE; }
  27
  28   const RefPtr<IDWriteFontFace>& GetFontFace() const { return mFontFace; }
  29   const RefPtr<IDWriteFont>& GetFont() const { return mFont; }
  30
  31   bool GetFontFileData(FontFileDataOutput aDataCallback, void* aBaton) override;
  32
  33   already_AddRefed<ScaledFont> CreateScaledFont(
  34       Float aGlyphSize, const uint8_t* aInstanceData,
  35       uint32_t aInstanceDataLength, const FontVariation* aVariations,
  36       uint32_t aNumVariations) override;
  37
  38   already_AddRefed<ScaledFont> CreateScaledFontFromWRFont(
  39       Float aGlyphSize, const wr::FontInstanceOptions* aOptions,
  40       const wr::FontInstancePlatformOptions* aPlatformOptions,
  41       const FontVariation* aVariations, uint32_t aNumVariations) override;
  42
  43   bool GetFontDescriptor(FontDescriptorOutput aCb, void* aBaton) override;
  44
  45   static already_AddRefed<UnscaledFont> CreateFromFontDescriptor(
  46       const uint8_t* aData, uint32_t aDataLength, uint32_t aIndex);
  47
  48  private:
  49   bool InitBold();
  50
  51   RefPtr<IDWriteFontFace> mFontFace;
  52   RefPtr<IDWriteFontFace> mFontFaceBold;
  53   RefPtr<IDWriteFont> mFont;
  54 };
  55
  56 }  // namespace gfx
  57 }  // namespace mozilla
  58
  59 #endif /* MOZILLA_GFX_UNSCALEDFONTDWRITE_H_ */