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// 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
#ifndef CORE_FXGE_CFX_GLYPHCACHE_H_
#define CORE_FXGE_CFX_GLYPHCACHE_H_
#include <map>
#include <memory>
#include <tuple>
#include "core/fxcrt/bytestring.h"
#include "core/fxcrt/observed_ptr.h"
#include "core/fxcrt/retain_ptr.h"
#include "core/fxge/cfx_face.h"
#if defined(_SKIA_SUPPORT_)
#include "core/fxge/fx_font.h"
#include "third_party/skia/include/core/SkRefCnt.h" // nogncheck
#endif
class CFX_Font;
class CFX_GlyphBitmap;
class CFX_Matrix;
class CFX_Path;
struct CFX_TextRenderOptions;
class CFX_GlyphCache final : public Retainable, public Observable {
public:
CONSTRUCT_VIA_MAKE_RETAIN;
const CFX_GlyphBitmap* 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);
const CFX_Path* LoadGlyphPath(const CFX_Font* pFont,
uint32_t glyph_index,
int dest_width);
int GetGlyphWidth(const CFX_Font* font,
uint32_t glyph_index,
int dest_width,
int weight);
RetainPtr<CFX_Face> GetFace() { return m_Face; }
FXFT_FaceRec* GetFaceRec() { return m_Face ? m_Face->GetRec() : nullptr; }
#if defined(_SKIA_SUPPORT_)
CFX_TypeFace* GetDeviceCache(const CFX_Font* pFont);
static void InitializeGlobals();
static void DestroyGlobals();
#endif
private:
explicit CFX_GlyphCache(RetainPtr<CFX_Face> face);
~CFX_GlyphCache() override;
using SizeGlyphCache = std::map<uint32_t, std::unique_ptr<CFX_GlyphBitmap>>;
// <glyph_index, width, weight, angle, vertical>
using PathMapKey = std::tuple<uint32_t, int, int, int, bool>;
// <glyph_index, dest_width, weight>
using WidthMapKey = std::tuple<uint32_t, int, int>;
std::unique_ptr<CFX_GlyphBitmap> RenderGlyph(const CFX_Font* pFont,
uint32_t glyph_index,
bool bFontStyle,
const CFX_Matrix& matrix,
int dest_width,
int anti_alias);
std::unique_ptr<CFX_GlyphBitmap> RenderGlyph_Nativetext(
const CFX_Font* pFont,
uint32_t glyph_index,
const CFX_Matrix& matrix,
int dest_width,
int anti_alias);
CFX_GlyphBitmap* LookUpGlyphBitmap(const CFX_Font* pFont,
const CFX_Matrix& matrix,
const ByteString& FaceGlyphsKey,
uint32_t glyph_index,
bool bFontStyle,
int dest_width,
int anti_alias);
RetainPtr<CFX_Face> const m_Face;
std::map<ByteString, SizeGlyphCache> m_SizeMap;
std::map<PathMapKey, std::unique_ptr<CFX_Path>> m_PathMap;
std::map<WidthMapKey, int> m_WidthMap;
#if defined(_SKIA_SUPPORT_)
sk_sp<SkTypeface> m_pTypeface;
#endif
};
#endif // CORE_FXGE_CFX_GLYPHCACHE_H_