Split core/include/fpdfdoc/fpdf_ap.h

core/fpdfdoc/cpvt_fontmap.cpp

+// 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/fpdfdoc/cpvt_fontmap.h"
+
+#include "core/fpdfapi/fpdf_font/include/cpdf_font.h"
+#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
+#include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
+#include "core/fpdfdoc/doc_utils.h"
+
+CPVT_FontMap::CPVT_FontMap(CPDF_Document* pDoc,
+                           CPDF_Dictionary* pResDict,
+                           CPDF_Font* pDefFont,
+                           const CFX_ByteString& sDefFontAlias)
+    : m_pDocument(pDoc),
+      m_pResDict(pResDict),
+      m_pDefFont(pDefFont),
+      m_sDefFontAlias(sDefFontAlias),
+      m_pSysFont(nullptr),
+      m_sSysFontAlias() {}
+
+CPVT_FontMap::~CPVT_FontMap() {}
+
+void CPVT_FontMap::GetAnnotSysPDFFont(CPDF_Document* pDoc,
+                                      const CPDF_Dictionary* pResDict,
+                                      CPDF_Font*& pSysFont,
+                                      CFX_ByteString& sSysFontAlias) {
+  if (!pDoc || !pResDict)
+    return;
+
+  CFX_ByteString sFontAlias;
+  CPDF_Dictionary* pFormDict = pDoc->GetRoot()->GetDictBy("AcroForm");
+  CPDF_Font* pPDFFont = AddNativeInterFormFont(pFormDict, pDoc, sSysFontAlias);
+  if (!pPDFFont)
+    return;
+
+  if (CPDF_Dictionary* pFontList = pResDict->GetDictBy("Font")) {
+    if (!pFontList->KeyExist(sSysFontAlias))
+      pFontList->SetAtReference(sSysFontAlias, pDoc, pPDFFont->GetFontDict());
+  }
+  pSysFont = pPDFFont;
+}
+
+CPDF_Font* CPVT_FontMap::GetPDFFont(int32_t nFontIndex) {
+  switch (nFontIndex) {
+    case 0:
+      return m_pDefFont;
+    case 1:
+      if (!m_pSysFont) {
+        GetAnnotSysPDFFont(m_pDocument, m_pResDict, m_pSysFont,
+                           m_sSysFontAlias);
+      }
+      return m_pSysFont;
+    default:
+      return nullptr;
+  }
+}
+
+CFX_ByteString CPVT_FontMap::GetPDFFontAlias(int32_t nFontIndex) {
+  switch (nFontIndex) {
+    case 0:
+      return m_sDefFontAlias;
+    case 1:
+      if (!m_pSysFont) {
+        GetAnnotSysPDFFont(m_pDocument, m_pResDict, m_pSysFont,
+                           m_sSysFontAlias);
+      }
+      return m_sSysFontAlias;
+    default:
+      return "";
+  }
+}