chromium/third_party/pdfium/core/fxge/cfx_glyphcache.cpp

// Copyright 2016 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#include "core/fxge/cfx_glyphcache.h"

#include <initializer_list>
#include <memory>
#include <utility>

#include "build/build_config.h"
#include "core/fxcrt/fx_codepage.h"
#include "core/fxcrt/fx_memcpy_wrappers.h"
#include "core/fxcrt/span.h"
#include "core/fxge/cfx_defaultrenderdevice.h"
#include "core/fxge/cfx_font.h"
#include "core/fxge/cfx_glyphbitmap.h"
#include "core/fxge/cfx_path.h"
#include "core/fxge/cfx_substfont.h"

#if defined(PDF_USE_SKIA)
#include "third_party/skia/include/core/SkStream.h"  // nogncheck
#include "third_party/skia/include/core/SkTypeface.h"  // nogncheck
#include "third_party/skia/include/core/SkFontMgr.h"  // nogncheck
#include "third_party/skia/include/ports/SkFontMgr_empty.h"  // nogncheck

#if BUILDFLAG(IS_WIN)
#include "third_party/skia/include/ports/SkTypeface_win.h"  // nogncheck
#elif BUILDFLAG(IS_APPLE)
#include "third_party/skia/include/ports/SkFontMgr_mac_ct.h"  // nogncheck
#endif

#endif

#if BUILDFLAG(IS_APPLE)
#include "core/fxge/cfx_textrenderoptions.h"
#endif

namespace {

constexpr uint32_t kInvalidGlyphIndex = …;

class UniqueKeyGen { … };

void UniqueKeyGen::Initialize(std::initializer_list<const int32_t> args) { … }

pdfium::span<const uint8_t> UniqueKeyGen::span() const { … }

UniqueKeyGen::UniqueKeyGen(const CFX_Font* pFont,
                           const CFX_Matrix& matrix,
                           int dest_width,
                           int anti_alias,
                           bool bNative) { … }

}  // namespace

CFX_GlyphCache::CFX_GlyphCache(RetainPtr<CFX_Face> face)
    : … { … }

CFX_GlyphCache::~CFX_GlyphCache() = default;

std::unique_ptr<CFX_GlyphBitmap> CFX_GlyphCache::RenderGlyph(
    const CFX_Font* pFont,
    uint32_t glyph_index,
    bool bFontStyle,
    const CFX_Matrix& matrix,
    int dest_width,
    int anti_alias) { … }

const CFX_Path* CFX_GlyphCache::LoadGlyphPath(const CFX_Font* pFont,
                                              uint32_t glyph_index,
                                              int dest_width) { … }

const CFX_GlyphBitmap* CFX_GlyphCache::LoadGlyphBitmap(
    const CFX_Font* pFont,
    uint32_t glyph_index,
    bool bFontStyle,
    const CFX_Matrix& matrix,
    int dest_width,
    int anti_alias,
    CFX_TextRenderOptions* text_options) { … }

int CFX_GlyphCache::GetGlyphWidth(const CFX_Font* font,
                                  uint32_t glyph_index,
                                  int dest_width,
                                  int weight) { … }

#if defined(PDF_USE_SKIA)

namespace {
// A singleton SkFontMgr which can be used to decode raw font data or
// otherwise get access to system fonts.
SkFontMgr* g_fontmgr = …;
}  // namespace

// static
void CFX_GlyphCache::InitializeGlobals() { … }

// static
void CFX_GlyphCache::DestroyGlobals() { … }

CFX_TypeFace* CFX_GlyphCache::GetDeviceCache(const CFX_Font* pFont) { … }
#endif  // defined(PDF_USE_SKIA)

CFX_GlyphBitmap* CFX_GlyphCache::LookUpGlyphBitmap(
    const CFX_Font* pFont,
    const CFX_Matrix& matrix,
    const ByteString& FaceGlyphsKey,
    uint32_t glyph_index,
    bool bFontStyle,
    int dest_width,
    int anti_alias) { … }