gfx/2d/NativeFontResourceFreeType.cpp

   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 #include "NativeFontResourceFreeType.h"
   8 #include "UnscaledFontFreeType.h"
   9 #include "Logging.h"
  10
  11 namespace mozilla::gfx {
  12
  13 NativeFontResourceFreeType::NativeFontResourceFreeType(
  14     UniquePtr<uint8_t[]>&& aFontData, uint32_t aDataLength,
  15     FT_Library aFTLibrary)
  16     : NativeFontResource(aDataLength),
  17       mFontData(std::move(aFontData)),
  18       mDataLength(aDataLength),
  19       mFTLibrary(aFTLibrary) {}
  20
  21 NativeFontResourceFreeType::~NativeFontResourceFreeType() = default;
  22
  23 template <class T>
  24 already_AddRefed<T> NativeFontResourceFreeType::CreateInternal(
  25     uint8_t* aFontData, uint32_t aDataLength, FT_Library aFTLibrary) {
  26   if (!aFontData || !aDataLength) {
  27     return nullptr;
  28   }
  29   UniquePtr<uint8_t[]> fontData(new (fallible) uint8_t[aDataLength]);
  30   if (!fontData) {
  31     return nullptr;
  32   }
  33   memcpy(fontData.get(), aFontData, aDataLength);
  34
  35   RefPtr<T> resource = new T(std::move(fontData), aDataLength, aFTLibrary);
  36   return resource.forget();
  37 }
  38
  39 #ifdef MOZ_WIDGET_ANDROID
  40 already_AddRefed<NativeFontResourceFreeType> NativeFontResourceFreeType::Create(
  41     uint8_t* aFontData, uint32_t aDataLength, FT_Library aFTLibrary) {
  42   return CreateInternal<NativeFontResourceFreeType>(aFontData, aDataLength,
  43                                                     aFTLibrary);
  44 }
  45
  46 already_AddRefed<UnscaledFont> NativeFontResourceFreeType::CreateUnscaledFont(
  47     uint32_t aIndex, const uint8_t* aInstanceData,
  48     uint32_t aInstanceDataLength) {
  49   if (RefPtr<SharedFTFace> face = CloneFace()) {
  50     return MakeAndAddRef<UnscaledFontFreeType>(std::move(face));
  51   }
  52   return nullptr;
  53 }
  54 #endif
  55
  56 already_AddRefed<SharedFTFace> NativeFontResourceFreeType::CloneFace(
  57     int aFaceIndex) {
  58   RefPtr<SharedFTFace> face = Factory::NewSharedFTFaceFromData(
  59       mFTLibrary, mFontData.get(), mDataLength, aFaceIndex, this);
  60   if (!face ||
  61       (FT_Select_Charmap(face->GetFace(), FT_ENCODING_UNICODE) != FT_Err_Ok &&
  62        FT_Select_Charmap(face->GetFace(), FT_ENCODING_MS_SYMBOL) !=
  63            FT_Err_Ok)) {
  64     return nullptr;
  65   }
  66   return face.forget();
  67 }
  68
  69 #ifdef MOZ_WIDGET_GTK
  70 NativeFontResourceFontconfig::NativeFontResourceFontconfig(
  71     UniquePtr<uint8_t[]>&& aFontData, uint32_t aDataLength,
  72     FT_Library aFTLibrary)
  73     : NativeFontResourceFreeType(std::move(aFontData), aDataLength,
  74                                  aFTLibrary) {}
  75
  76 already_AddRefed<UnscaledFont> NativeFontResourceFontconfig::CreateUnscaledFont(
  77     uint32_t aIndex, const uint8_t* aInstanceData,
  78     uint32_t aInstanceDataLength) {
  79   if (RefPtr<SharedFTFace> face = CloneFace()) {
  80     return MakeAndAddRef<UnscaledFontFontconfig>(std::move(face));
  81   }
  82   return nullptr;
  83 }
  84
  85 already_AddRefed<NativeFontResourceFontconfig>
  86 NativeFontResourceFontconfig::Create(uint8_t* aFontData, uint32_t aDataLength,
  87                                      FT_Library aFTLibrary) {
  88   return CreateInternal<NativeFontResourceFontconfig>(aFontData, aDataLength,
  89                                                       aFTLibrary);
  90 }
  91 #endif
  92
  93 }  // namespace mozilla::gfx