| // 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/include/cfx_fontcache.h" |
| |
| #include "core/fxge/include/fx_font.h" |
| #include "core/fxge/include/fx_freetype.h" |
| |
| CFX_FontCache::CFX_FontCache() {} |
| |
| CFX_FontCache::~CFX_FontCache() { |
| FreeCache(TRUE); |
| } |
| |
| CFX_FaceCache* CFX_FontCache::GetCachedFace(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()) { |
| CFX_CountedFaceCache* counted_face_cache = it->second; |
| counted_face_cache->m_nCount++; |
| return counted_face_cache->m_Obj; |
| } |
| |
| CFX_FaceCache* face_cache = new CFX_FaceCache(bExternal ? nullptr : face); |
| CFX_CountedFaceCache* counted_face_cache = new CFX_CountedFaceCache; |
| counted_face_cache->m_nCount = 2; |
| counted_face_cache->m_Obj = face_cache; |
| map[face] = counted_face_cache; |
| return face_cache; |
| } |
| |
| #ifdef _SKIA_SUPPORT_ |
| CFX_TypeFace* CFX_FontCache::GetDeviceCache(CFX_Font* pFont) { |
| return GetCachedFace(pFont)->GetDeviceCache(pFont); |
| } |
| #endif |
| |
| void CFX_FontCache::ReleaseCachedFace(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; |
| |
| CFX_CountedFaceCache* counted_face_cache = it->second; |
| if (counted_face_cache->m_nCount > 1) { |
| counted_face_cache->m_nCount--; |
| } |
| } |
| |
| void CFX_FontCache::FreeCache(FX_BOOL bRelease) { |
| for (auto it = m_FTFaceMap.begin(); it != m_FTFaceMap.end();) { |
| auto curr_it = it++; |
| CFX_CountedFaceCache* cache = curr_it->second; |
| if (bRelease || cache->m_nCount < 2) { |
| delete cache->m_Obj; |
| delete cache; |
| m_FTFaceMap.erase(curr_it); |
| } |
| } |
| |
| for (auto it = m_ExtFaceMap.begin(); it != m_ExtFaceMap.end();) { |
| auto curr_it = it++; |
| CFX_CountedFaceCache* cache = curr_it->second; |
| if (bRelease || cache->m_nCount < 2) { |
| delete cache->m_Obj; |
| delete cache; |
| m_ExtFaceMap.erase(curr_it); |
| } |
| } |
| } |