// Copyright 2016 PDFium Authors. All rights reserved. // 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_fontcache.h" #include <memory> #include <utility> #include "core/fxge/cfx_facecache.h" #include "core/fxge/fx_font.h" #include "core/fxge/fx_freetype.h" #include "third_party/base/ptr_util.h" CFX_FontCache::CountedFaceCache::CountedFaceCache() {} CFX_FontCache::CountedFaceCache::~CountedFaceCache() {} CFX_FontCache::CFX_FontCache() {} CFX_FontCache::~CFX_FontCache() { ASSERT(m_ExtFaceMap.empty()); ASSERT(m_FTFaceMap.empty()); } CFX_FaceCache* CFX_FontCache::GetCachedFace(const CFX_Font* pFont) { FXFT_Face face = pFont->GetFace(); const bool bExternal = !face; CFX_FTCacheMap& map = bExternal ? m_ExtFaceMap : m_FTFaceMap; auto it = map.find(face); if (it != map.end()) { CountedFaceCache* counted_face_cache = it->second.get(); counted_face_cache->m_nCount++; return counted_face_cache->m_Obj.get(); } auto counted_face_cache = pdfium::MakeUnique<CountedFaceCache>(); counted_face_cache->m_nCount = 2; auto new_cache = pdfium::MakeUnique<CFX_FaceCache>(bExternal ? nullptr : face); CFX_FaceCache* face_cache = new_cache.get(); counted_face_cache->m_Obj = std::move(new_cache); map[face] = std::move(counted_face_cache); return face_cache; } #ifdef _SKIA_SUPPORT_ CFX_TypeFace* CFX_FontCache::GetDeviceCache(const CFX_Font* pFont) { return GetCachedFace(pFont)->GetDeviceCache(pFont); } #endif void CFX_FontCache::ReleaseCachedFace(const CFX_Font* pFont) { FXFT_Face face = pFont->GetFace(); const bool bExternal = !face; CFX_FTCacheMap& map = bExternal ? m_ExtFaceMap : m_FTFaceMap; auto it = map.find(face); if (it == map.end()) return; CountedFaceCache* counted_face_cache = it->second.get(); if (counted_face_cache->m_nCount > 2) { counted_face_cache->m_nCount--; } else { map.erase(it); } }