Rename CXFA_DefFontMgr to CFGAS_DefaultFontManager

This CL removes any XFA requirements on the default font manager and
moves it to the fgas/ directory. Some helper methods from CXFA_FontMgr
are moved into the fgas/fgas_fontutils.h files.

Change-Id: I17ba8dc2bd60085c17d8a3328f6625675a82787f
Reviewed-on: https://pdfium-review.googlesource.com/14570
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 71 insertions, 0 deletions

diff --git a/xfa/fgas/font/cfgas_defaultfontmanager.cpp b/xfa/fgas/font/cfgas_defaultfontmanager.cpp
new file mode 100644
index 0000000000..480525802b
--- /dev/null
+++ b/xfa/fgas/font/cfgas_defaultfontmanager.cpp
@@ -0,0 +1,71 @@
+// Copyright 2017 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 "xfa/fgas/font/cfgas_defaultfontmanager.h"
+
+#include "xfa/fgas/font/fgas_fontutils.h"
+
+CFGAS_DefaultFontManager::CFGAS_DefaultFontManager() {}
+
+CFGAS_DefaultFontManager::~CFGAS_DefaultFontManager() {}
+
+CFX_RetainPtr<CFGAS_GEFont> CFGAS_DefaultFontManager::GetFont(
+    CFGAS_FontMgr* pFontMgr,
+    const WideStringView& wsFontFamily,
+    uint32_t dwFontStyles,
+    uint16_t wCodePage) {
+  WideString wsFontName(wsFontFamily);
+  CFX_RetainPtr<CFGAS_GEFont> pFont =
+      pFontMgr->LoadFont(wsFontName.c_str(), dwFontStyles, wCodePage);
+  if (!pFont) {
+    const FGAS_FontInfo* pCurFont =
+        FGAS_FontInfoByFontName(wsFontName.AsStringView());
+    if (pCurFont && pCurFont->pReplaceFont) {
+      uint32_t dwStyle = 0;
+      if (dwFontStyles & FX_FONTSTYLE_Bold)
+        dwStyle |= FX_FONTSTYLE_Bold;
+      if (dwFontStyles & FX_FONTSTYLE_Italic)
+        dwStyle |= FX_FONTSTYLE_Italic;
+
+      const wchar_t* pReplace = pCurFont->pReplaceFont;
+      int32_t iLength = FXSYS_wcslen(pReplace);
+      while (iLength > 0) {
+        const wchar_t* pNameText = pReplace;
+        while (*pNameText != L',' && iLength > 0) {
+          pNameText++;
+          iLength--;
+        }
+        WideString wsReplace = WideString(pReplace, pNameText - pReplace);
+        pFont = pFontMgr->LoadFont(wsReplace.c_str(), dwStyle, wCodePage);
+        if (pFont)
+          break;
+
+        iLength--;
+        pNameText++;
+        pReplace = pNameText;
+      }
+    }
+  }
+  if (pFont)
+    m_CacheFonts.push_back(pFont);
+  return pFont;
+}
+
+CFX_RetainPtr<CFGAS_GEFont> CFGAS_DefaultFontManager::GetDefaultFont(
+    CFGAS_FontMgr* pFontMgr,
+    const WideStringView& wsFontFamily,
+    uint32_t dwFontStyles,
+    uint16_t wCodePage) {
+  CFX_RetainPtr<CFGAS_GEFont> pFont =
+      pFontMgr->LoadFont(L"Arial Narrow", dwFontStyles, wCodePage);
+  if (!pFont) {
+    pFont = pFontMgr->LoadFont(static_cast<const wchar_t*>(nullptr),
+                               dwFontStyles, wCodePage);
+  }
+  if (pFont)
+    m_CacheFonts.push_back(pFont);
+  return pFont;
+}