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// 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/cfx_facecache.h"
#include "core/fxge/include/fx_font.h"
#include "core/fxge/include/fx_freetype.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();
}
std::unique_ptr<CountedFaceCache> counted_face_cache(new CountedFaceCache);
counted_face_cache->m_nCount = 2;
CFX_FaceCache* face_cache = new CFX_FaceCache(bExternal ? nullptr : face);
counted_face_cache->m_Obj.reset(face_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);
}
}
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