| // 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); |
| } |
| } |