Make CPDF_TextState have a CPDF_TextStateData rather than inheriting one.

core/fpdfapi/fpdf_page/fpdf_page_parser.cpp

 // Copyright 2014 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/fpdfapi/fpdf_page/pageint.h"
 
 #include <memory>
 #include <utility>
@@ skipping 805 matching lines @@
     m_CurContentMark.SetNull();
     return;
   }
   m_CurContentMark.GetPrivateCopy()->DeleteLastMark();
 }
 
 void CPDF_StreamContentParser::Handle_EndText() {
   if (m_ClipTextList.empty())
     return;
 
-  if (TextRenderingModeIsClipMode(
-          m_pCurStates->m_TextState.GetObject()->m_TextMode)) {
+  if (TextRenderingModeIsClipMode(m_pCurStates->m_TextState.GetTextMode()))
     m_pCurStates->m_ClipPath.AppendTexts(&m_ClipTextList);
-  }
+
   m_ClipTextList.clear();
 }
 
 void CPDF_StreamContentParser::Handle_FillPath() {
   AddPathObject(FXFILL_WINDING, FALSE);
 }
 
 void CPDF_StreamContentParser::Handle_FillPathOld() {
   AddPathObject(FXFILL_WINDING, FALSE);
 }
@@ skipping 267 matching lines @@
   if (pShading->IsMeshShading())
     bbox.Intersect(GetShadingBBox(pShading, pObj->m_Matrix));
   pObj->m_Left = bbox.left;
   pObj->m_Right = bbox.right;
   pObj->m_Top = bbox.top;
   pObj->m_Bottom = bbox.bottom;
   m_pObjectHolder->GetPageObjectList()->push_back(std::move(pObj));
 }
 
 void CPDF_StreamContentParser::Handle_SetCharSpace() {
-  m_pCurStates->m_TextState.GetPrivateCopy()->m_CharSpace = GetNumber(0);
+  m_pCurStates->m_TextState.SetCharSpace(GetNumber(0));
 }
 
 void CPDF_StreamContentParser::Handle_MoveTextPoint() {
   m_pCurStates->m_TextLineX += GetNumber(1);
   m_pCurStates->m_TextLineY += GetNumber(0);
   m_pCurStates->m_TextX = m_pCurStates->m_TextLineX;
   m_pCurStates->m_TextY = m_pCurStates->m_TextLineY;
 }
 
 void CPDF_StreamContentParser::Handle_MoveTextPoint_SetLeading() {
   Handle_MoveTextPoint();
   m_pCurStates->m_TextLeading = -GetNumber(0);
 }
 
 void CPDF_StreamContentParser::Handle_SetFont() {
   FX_FLOAT fs = GetNumber(0);
   if (fs == 0) {
     fs = m_DefFontSize;
   }
-  m_pCurStates->m_TextState.GetPrivateCopy()->m_FontSize = fs;
+  m_pCurStates->m_TextState.SetFontSize(fs);
   CPDF_Font* pFont = FindFont(GetString(1));
   if (pFont) {
     m_pCurStates->m_TextState.SetFont(pFont);
   }
 }
 
 CPDF_Object* CPDF_StreamContentParser::FindResourceObj(
     const CFX_ByteString& type,
     const CFX_ByteString& name) {
   if (!m_pResources)
@@ skipping 88 matching lines @@
     } else {
       m_pCurStates->m_TextY -=
           (fInitKerning * m_pCurStates->m_TextState.GetFontSize()) / 1000;
     }
   }
   if (nsegs == 0) {
     return;
   }
   const TextRenderingMode text_mode =
       pFont->IsType3Font() ? TextRenderingMode::MODE_FILL
-                           : m_pCurStates->m_TextState.GetObject()->m_TextMode;
+                           : m_pCurStates->m_TextState.GetTextMode();
   {
     std::unique_ptr<CPDF_TextObject> pText(new CPDF_TextObject);
     m_pLastTextObject = pText.get();
     SetGraphicStates(m_pLastTextObject, TRUE, TRUE, TRUE);
     if (TextRenderingModeIsStrokeMode(text_mode)) {
-      FX_FLOAT* pCTM = pText->m_TextState.GetPrivateCopy()->m_CTM;
+      FX_FLOAT* pCTM = pText->m_TextState.GetMutableCTM();
       pCTM[0] = m_pCurStates->m_CTM.a;
       pCTM[1] = m_pCurStates->m_CTM.c;
       pCTM[2] = m_pCurStates->m_CTM.b;
       pCTM[3] = m_pCurStates->m_CTM.d;
     }
     pText->SetSegments(pStrs, pKerning, nsegs);
     pText->m_PosX = m_pCurStates->m_TextX;
     pText->m_PosY = m_pCurStates->m_TextY + m_pCurStates->m_TextRise;
     ConvertTextSpace(pText->m_PosX, pText->m_PosY);
     FX_FLOAT x_advance;
@@ skipping 88 matching lines @@
   m_pCurStates->m_TextLineX = 0;
   m_pCurStates->m_TextLineY = 0;
 }
 
 void CPDF_StreamContentParser::OnChangeTextMatrix() {
   CFX_Matrix text_matrix(m_pCurStates->m_TextHorzScale, 0.0f, 0.0f, 1.0f, 0.0f,
                          0.0f);
   text_matrix.Concat(m_pCurStates->m_TextMatrix);
   text_matrix.Concat(m_pCurStates->m_CTM);
   text_matrix.Concat(m_mtContentToUser);
-  FX_FLOAT* pTextMatrix = m_pCurStates->m_TextState.GetPrivateCopy()->m_Matrix;
+  FX_FLOAT* pTextMatrix = m_pCurStates->m_TextState.GetMutableMatrix();
   pTextMatrix[0] = text_matrix.a;
   pTextMatrix[1] = text_matrix.c;
   pTextMatrix[2] = text_matrix.b;
   pTextMatrix[3] = text_matrix.d;
 }
 
 void CPDF_StreamContentParser::Handle_SetTextRenderMode() {
-  int mode = GetInteger(0);
-  SetTextRenderingModeFromInt(
-      mode, &m_pCurStates->m_TextState.GetPrivateCopy()->m_TextMode);
+  TextRenderingMode mode;
+  if (SetTextRenderingModeFromInt(GetInteger(0), &mode))
+    m_pCurStates->m_TextState.SetTextMode(mode);
 }
 
 void CPDF_StreamContentParser::Handle_SetTextRise() {
   m_pCurStates->m_TextRise = GetNumber(0);
 }
 
 void CPDF_StreamContentParser::Handle_SetWordSpace() {
-  m_pCurStates->m_TextState.GetPrivateCopy()->m_WordSpace = GetNumber(0);
+  m_pCurStates->m_TextState.SetWordSpace(GetNumber(0));
 }
 
 void CPDF_StreamContentParser::Handle_SetHorzScale() {
   if (m_ParamCount != 1) {
     return;
   }
   m_pCurStates->m_TextHorzScale = GetNumber(0) / 100;
   OnChangeTextMatrix();
 }
 
@@ skipping 27 matching lines @@
   AddPathPoint(GetNumber(1), GetNumber(0), FXPT_BEZIERTO);
   AddPathPoint(GetNumber(1), GetNumber(0), FXPT_BEZIERTO);
 }
 
 void CPDF_StreamContentParser::Handle_NextLineShowText() {
   Handle_MoveToNextLine();
   Handle_ShowText();
 }
 
 void CPDF_StreamContentParser::Handle_NextLineShowText_Space() {
-  m_pCurStates->m_TextState.GetPrivateCopy()->m_WordSpace = GetNumber(2);
-  m_pCurStates->m_TextState.GetPrivateCopy()->m_CharSpace = GetNumber(1);
+  m_pCurStates->m_TextState.SetWordSpace(GetNumber(2));
+  m_pCurStates->m_TextState.SetCharSpace(GetNumber(1));
   Handle_NextLineShowText();
 }
 
 void CPDF_StreamContentParser::Handle_Invalid() {}
 
 void CPDF_StreamContentParser::AddPathPoint(FX_FLOAT x, FX_FLOAT y, int flag) {
   m_PathCurrentX = x;
   m_PathCurrentY = y;
   if (flag == FXPT_MOVETO) {
     m_PathStartX = x;
@@ skipping 246 matching lines @@
         } else {
           PDF_ReplaceAbbr(pElement);
         }
       }
       break;
     }
     default:
       break;
   }
 }