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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::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);
}
}
}
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