gfx/2d/NativeFontResourceDWrite.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_NativeFontResourceDWrite_h
   8 #define mozilla_gfx_NativeFontResourceDWrite_h
   9
  10 #include <dwrite.h>
  11
  12 #include "2D.h"
  13 #include "mozilla/AlreadyAddRefed.h"
  14
  15 namespace mozilla {
  16 namespace gfx {
  17
  18 class NativeFontResourceDWrite final : public NativeFontResource {
  19  public:
  20   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(NativeFontResourceDWrite, override)
  21
  22   /**
  23    * Creates a NativeFontResourceDWrite if data is valid. Note aFontData will be
  24    * copied if required and so can be released after calling.
  25    *
  26    * @param aFontData the SFNT data.
  27    * @param aDataLength length of data.
  28    * @return Referenced NativeFontResourceDWrite or nullptr if invalid.
  29    */
  30   static already_AddRefed<NativeFontResourceDWrite> Create(
  31       uint8_t* aFontData, uint32_t aDataLength);
  32
  33   already_AddRefed<UnscaledFont> CreateUnscaledFont(
  34       uint32_t aIndex, const uint8_t* aInstanceData,
  35       uint32_t aInstanceDataLength) final;
  36
  37  private:
  38   NativeFontResourceDWrite(
  39       IDWriteFactory* aFactory, already_AddRefed<IDWriteFontFile> aFontFile,
  40       already_AddRefed<IDWriteFontFileStream> aFontFileStream,
  41       DWRITE_FONT_FACE_TYPE aFaceType, uint32_t aNumberOfFaces,
  42       size_t aDataLength)
  43       : NativeFontResource(aDataLength),
  44         mFactory(aFactory),
  45         mFontFile(aFontFile),
  46         mFontFileStream(aFontFileStream),
  47         mFaceType(aFaceType),
  48         mNumberOfFaces(aNumberOfFaces) {}
  49
  50   IDWriteFactory* mFactory;
  51   RefPtr<IDWriteFontFile> mFontFile;
  52   RefPtr<IDWriteFontFileStream> mFontFileStream;
  53   DWRITE_FONT_FACE_TYPE mFaceType;
  54   uint32_t mNumberOfFaces;
  55 };
  56
  57 }  // namespace gfx
  58 }  // namespace mozilla
  59
  60 #endif  // mozilla_gfx_NativeFontResourceDWrite_h