1 files changed, 70 insertions, 0 deletions
diff --git a/core/fxge/cfx_fontcache.cpp b/core/fxge/cfx_fontcache.cpp
new file mode 100644
index 0000000000..5ccac8cfbc
--- /dev/null
+++ b/core/fxge/cfx_fontcache.cpp
@@ -0,0 +1,70 @@
+// 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);
+  }
+}