Move core/include/fpdfapi/fpdf_pageobj.h into core/fpdfapi.

This CL splits the file into individual classes and moves them into
core/fpdfapi/fpdf_page as needed.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1811053002 .

1 files changed, 0 insertions, 636 deletions

diff --git a/core/fpdfapi/fpdf_page/fpdf_page.cpp b/core/fpdfapi/fpdf_page/fpdf_page.cpp
deleted file mode 100644
index ad54e320bc..0000000000
--- a/core/fpdfapi/fpdf_page/fpdf_page.cpp
+++ /dev/null
@@ -1,636 +0,0 @@
-// 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 <algorithm>
-
-#include "core/fpdfapi/fpdf_page/include/cpdf_form.h"
-#include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
-#include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
-#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
-#include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
-#include "core/fpdfapi/include/cpdf_modulemgr.h"
-#include "core/fpdfapi/ipdf_rendermodule.h"
-#include "third_party/base/stl_util.h"
-
-CPDF_PageObject::CPDF_PageObject() {}
-
-CPDF_PageObject::~CPDF_PageObject() {}
-
-void CPDF_PageObject::CopyData(const CPDF_PageObject* pSrc) {
-  CopyStates(*pSrc);
-  m_Left = pSrc->m_Left;
-  m_Right = pSrc->m_Right;
-  m_Top = pSrc->m_Top;
-  m_Bottom = pSrc->m_Bottom;
-}
-
-void CPDF_PageObject::TransformClipPath(CFX_Matrix& matrix) {
-  if (m_ClipPath.IsNull()) {
-    return;
-  }
-  m_ClipPath.GetModify();
-  m_ClipPath.Transform(matrix);
-}
-
-void CPDF_PageObject::TransformGeneralState(CFX_Matrix& matrix) {
-  if (m_GeneralState.IsNull()) {
-    return;
-  }
-  CPDF_GeneralStateData* pGS = m_GeneralState.GetModify();
-  pGS->m_Matrix.Concat(matrix);
-}
-
-FX_RECT CPDF_PageObject::GetBBox(const CFX_Matrix* pMatrix) const {
-  CFX_FloatRect rect(m_Left, m_Bottom, m_Right, m_Top);
-  if (pMatrix) {
-    pMatrix->TransformRect(rect);
-  }
-  return rect.GetOutterRect();
-}
-
-CPDF_TextObject::CPDF_TextObject()
-    : m_PosX(0),
-      m_PosY(0),
-      m_nChars(0),
-      m_pCharCodes(nullptr),
-      m_pCharPos(nullptr) {}
-
-CPDF_TextObject::~CPDF_TextObject() {
-  if (m_nChars > 1) {
-    FX_Free(m_pCharCodes);
-  }
-  FX_Free(m_pCharPos);
-}
-
-void CPDF_TextObject::GetItemInfo(int index, CPDF_TextObjectItem* pInfo) const {
-  pInfo->m_CharCode =
-      m_nChars == 1 ? (FX_DWORD)(uintptr_t)m_pCharCodes : m_pCharCodes[index];
-  pInfo->m_OriginX = index ? m_pCharPos[index - 1] : 0;
-  pInfo->m_OriginY = 0;
-  if (pInfo->m_CharCode == -1) {
-    return;
-  }
-  CPDF_Font* pFont = m_TextState.GetFont();
-  if (!pFont->IsCIDFont()) {
-    return;
-  }
-  if (!pFont->AsCIDFont()->IsVertWriting()) {
-    return;
-  }
-  FX_WORD CID = pFont->AsCIDFont()->CIDFromCharCode(pInfo->m_CharCode);
-  pInfo->m_OriginY = pInfo->m_OriginX;
-  pInfo->m_OriginX = 0;
-  short vx, vy;
-  pFont->AsCIDFont()->GetVertOrigin(CID, vx, vy);
-  FX_FLOAT fontsize = m_TextState.GetFontSize();
-  pInfo->m_OriginX -= fontsize * vx / 1000;
-  pInfo->m_OriginY -= fontsize * vy / 1000;
-}
-
-int CPDF_TextObject::CountChars() const {
-  if (m_nChars == 1) {
-    return 1;
-  }
-  int count = 0;
-  for (int i = 0; i < m_nChars; ++i)
-    if (m_pCharCodes[i] != (FX_DWORD)-1) {
-      ++count;
-    }
-  return count;
-}
-
-void CPDF_TextObject::GetCharInfo(int index,
-                                  FX_DWORD& charcode,
-                                  FX_FLOAT& kerning) const {
-  if (m_nChars == 1) {
-    charcode = (FX_DWORD)(uintptr_t)m_pCharCodes;
-    kerning = 0;
-    return;
-  }
-  int count = 0;
-  for (int i = 0; i < m_nChars; ++i) {
-    if (m_pCharCodes[i] != (FX_DWORD)-1) {
-      if (count == index) {
-        charcode = m_pCharCodes[i];
-        if (i == m_nChars - 1 || m_pCharCodes[i + 1] != (FX_DWORD)-1) {
-          kerning = 0;
-        } else {
-          kerning = m_pCharPos[i];
-        }
-        return;
-      }
-      ++count;
-    }
-  }
-}
-
-void CPDF_TextObject::GetCharInfo(int index, CPDF_TextObjectItem* pInfo) const {
-  if (m_nChars == 1) {
-    GetItemInfo(0, pInfo);
-    return;
-  }
-  int count = 0;
-  for (int i = 0; i < m_nChars; ++i) {
-    FX_DWORD charcode = m_pCharCodes[i];
-    if (charcode == (FX_DWORD)-1) {
-      continue;
-    }
-    if (count == index) {
-      GetItemInfo(i, pInfo);
-      break;
-    }
-    ++count;
-  }
-}
-
-CPDF_TextObject* CPDF_TextObject::Clone() const {
-  CPDF_TextObject* obj = new CPDF_TextObject;
-  obj->CopyData(this);
-
-  obj->m_nChars = m_nChars;
-  if (m_nChars > 1) {
-    obj->m_pCharCodes = FX_Alloc(FX_DWORD, m_nChars);
-    FXSYS_memcpy(obj->m_pCharCodes, m_pCharCodes, m_nChars * sizeof(FX_DWORD));
-    obj->m_pCharPos = FX_Alloc(FX_FLOAT, m_nChars - 1);
-    FXSYS_memcpy(obj->m_pCharPos, m_pCharPos,
-                 (m_nChars - 1) * sizeof(FX_FLOAT));
-  } else {
-    obj->m_pCharCodes = m_pCharCodes;
-  }
-  obj->m_PosX = m_PosX;
-  obj->m_PosY = m_PosY;
-  return obj;
-}
-
-void CPDF_TextObject::GetTextMatrix(CFX_Matrix* pMatrix) const {
-  FX_FLOAT* pTextMatrix = m_TextState.GetMatrix();
-  pMatrix->Set(pTextMatrix[0], pTextMatrix[2], pTextMatrix[1], pTextMatrix[3],
-               m_PosX, m_PosY);
-}
-
-void CPDF_TextObject::SetSegments(const CFX_ByteString* pStrs,
-                                  FX_FLOAT* pKerning,
-                                  int nsegs) {
-  if (m_nChars > 1) {
-    FX_Free(m_pCharCodes);
-    m_pCharCodes = nullptr;
-  }
-  FX_Free(m_pCharPos);
-  m_pCharPos = nullptr;
-  CPDF_Font* pFont = m_TextState.GetFont();
-  m_nChars = 0;
-  for (int i = 0; i < nsegs; ++i) {
-    m_nChars += pFont->CountChar(pStrs[i], pStrs[i].GetLength());
-  }
-  m_nChars += nsegs - 1;
-  if (m_nChars > 1) {
-    m_pCharCodes = FX_Alloc(FX_DWORD, m_nChars);
-    m_pCharPos = FX_Alloc(FX_FLOAT, m_nChars - 1);
-    int index = 0;
-    for (int i = 0; i < nsegs; ++i) {
-      const FX_CHAR* segment = pStrs[i];
-      int offset = 0, len = pStrs[i].GetLength();
-      while (offset < len) {
-        m_pCharCodes[index++] = pFont->GetNextChar(segment, len, offset);
-      }
-      if (i != nsegs - 1) {
-        m_pCharPos[index - 1] = pKerning[i];
-        m_pCharCodes[index++] = (FX_DWORD)-1;
-      }
-    }
-  } else {
-    int offset = 0;
-    m_pCharCodes = (FX_DWORD*)(uintptr_t)pFont->GetNextChar(
-        pStrs[0], pStrs[0].GetLength(), offset);
-  }
-}
-
-void CPDF_TextObject::SetText(const CFX_ByteString& str) {
-  SetSegments(&str, nullptr, 1);
-  RecalcPositionData();
-}
-
-FX_FLOAT CPDF_TextObject::GetCharWidth(FX_DWORD charcode) const {
-  FX_FLOAT fontsize = m_TextState.GetFontSize() / 1000;
-  CPDF_Font* pFont = m_TextState.GetFont();
-  FX_BOOL bVertWriting = FALSE;
-  CPDF_CIDFont* pCIDFont = pFont->AsCIDFont();
-  if (pCIDFont) {
-    bVertWriting = pCIDFont->IsVertWriting();
-  }
-  if (!bVertWriting)
-    return pFont->GetCharWidthF(charcode, 0) * fontsize;
-
-  FX_WORD CID = pCIDFont->CIDFromCharCode(charcode);
-  return pCIDFont->GetVertWidth(CID) * fontsize;
-}
-
-void CPDF_TextObject::CalcPositionData(FX_FLOAT* pTextAdvanceX,
-                                       FX_FLOAT* pTextAdvanceY,
-                                       FX_FLOAT horz_scale,
-                                       int level) {
-  FX_FLOAT curpos = 0;
-  FX_FLOAT min_x = 10000 * 1.0f;
-  FX_FLOAT max_x = -10000 * 1.0f;
-  FX_FLOAT min_y = 10000 * 1.0f;
-  FX_FLOAT max_y = -10000 * 1.0f;
-  CPDF_Font* pFont = m_TextState.GetFont();
-  FX_BOOL bVertWriting = FALSE;
-  CPDF_CIDFont* pCIDFont = pFont->AsCIDFont();
-  if (pCIDFont) {
-    bVertWriting = pCIDFont->IsVertWriting();
-  }
-  FX_FLOAT fontsize = m_TextState.GetFontSize();
-  for (int i = 0; i < m_nChars; ++i) {
-    FX_DWORD charcode =
-        m_nChars == 1 ? (FX_DWORD)(uintptr_t)m_pCharCodes : m_pCharCodes[i];
-    if (i > 0) {
-      if (charcode == (FX_DWORD)-1) {
-        curpos -= (m_pCharPos[i - 1] * fontsize) / 1000;
-        continue;
-      }
-      m_pCharPos[i - 1] = curpos;
-    }
-    FX_RECT char_rect = pFont->GetCharBBox(charcode, level);
-    FX_FLOAT charwidth;
-    if (!bVertWriting) {
-      if (min_y > char_rect.top) {
-        min_y = (FX_FLOAT)char_rect.top;
-      }
-      if (max_y < char_rect.top) {
-        max_y = (FX_FLOAT)char_rect.top;
-      }
-      if (min_y > char_rect.bottom) {
-        min_y = (FX_FLOAT)char_rect.bottom;
-      }
-      if (max_y < char_rect.bottom) {
-        max_y = (FX_FLOAT)char_rect.bottom;
-      }
-      FX_FLOAT char_left = curpos + char_rect.left * fontsize / 1000;
-      FX_FLOAT char_right = curpos + char_rect.right * fontsize / 1000;
-      if (min_x > char_left) {
-        min_x = char_left;
-      }
-      if (max_x < char_left) {
-        max_x = char_left;
-      }
-      if (min_x > char_right) {
-        min_x = char_right;
-      }
-      if (max_x < char_right) {
-        max_x = char_right;
-      }
-      charwidth = pFont->GetCharWidthF(charcode, level) * fontsize / 1000;
-    } else {
-      FX_WORD CID = pCIDFont->CIDFromCharCode(charcode);
-      short vx;
-      short vy;
-      pCIDFont->GetVertOrigin(CID, vx, vy);
-      char_rect.left -= vx;
-      char_rect.right -= vx;
-      char_rect.top -= vy;
-      char_rect.bottom -= vy;
-      if (min_x > char_rect.left) {
-        min_x = (FX_FLOAT)char_rect.left;
-      }
-      if (max_x < char_rect.left) {
-        max_x = (FX_FLOAT)char_rect.left;
-      }
-      if (min_x > char_rect.right) {
-        min_x = (FX_FLOAT)char_rect.right;
-      }
-      if (max_x < char_rect.right) {
-        max_x = (FX_FLOAT)char_rect.right;
-      }
-      FX_FLOAT char_top = curpos + char_rect.top * fontsize / 1000;
-      FX_FLOAT char_bottom = curpos + char_rect.bottom * fontsize / 1000;
-      if (min_y > char_top) {
-        min_y = char_top;
-      }
-      if (max_y < char_top) {
-        max_y = char_top;
-      }
-      if (min_y > char_bottom) {
-        min_y = char_bottom;
-      }
-      if (max_y < char_bottom) {
-        max_y = char_bottom;
-      }
-      charwidth = pCIDFont->GetVertWidth(CID) * fontsize / 1000;
-    }
-    curpos += charwidth;
-    if (charcode == ' ' && (!pCIDFont || pCIDFont->GetCharSize(32) == 1)) {
-      curpos += m_TextState.GetObject()->m_WordSpace;
-    }
-    curpos += m_TextState.GetObject()->m_CharSpace;
-  }
-  if (bVertWriting) {
-    if (pTextAdvanceX) {
-      *pTextAdvanceX = 0;
-    }
-    if (pTextAdvanceY) {
-      *pTextAdvanceY = curpos;
-    }
-    min_x = min_x * fontsize / 1000;
-    max_x = max_x * fontsize / 1000;
-  } else {
-    if (pTextAdvanceX) {
-      *pTextAdvanceX = curpos * horz_scale;
-    }
-    if (pTextAdvanceY) {
-      *pTextAdvanceY = 0;
-    }
-    min_y = min_y * fontsize / 1000;
-    max_y = max_y * fontsize / 1000;
-  }
-  CFX_Matrix matrix;
-  GetTextMatrix(&matrix);
-  m_Left = min_x;
-  m_Right = max_x;
-  m_Bottom = min_y;
-  m_Top = max_y;
-  matrix.TransformRect(m_Left, m_Right, m_Top, m_Bottom);
-  int textmode = m_TextState.GetObject()->m_TextMode;
-  if (textmode == 1 || textmode == 2 || textmode == 5 || textmode == 6) {
-    FX_FLOAT half_width = m_GraphState.GetObject()->m_LineWidth / 2;
-    m_Left -= half_width;
-    m_Right += half_width;
-    m_Top += half_width;
-    m_Bottom -= half_width;
-  }
-}
-
-void CPDF_TextObject::Transform(const CFX_Matrix& matrix) {
-  m_TextState.GetModify();
-  CFX_Matrix text_matrix;
-  GetTextMatrix(&text_matrix);
-  text_matrix.Concat(matrix);
-  FX_FLOAT* pTextMatrix = m_TextState.GetMatrix();
-  pTextMatrix[0] = text_matrix.GetA();
-  pTextMatrix[1] = text_matrix.GetC();
-  pTextMatrix[2] = text_matrix.GetB();
-  pTextMatrix[3] = text_matrix.GetD();
-  m_PosX = text_matrix.GetE();
-  m_PosY = text_matrix.GetF();
-  CalcPositionData(nullptr, nullptr, 0);
-}
-
-void CPDF_TextObject::SetPosition(FX_FLOAT x, FX_FLOAT y) {
-  FX_FLOAT dx = x - m_PosX;
-  FX_FLOAT dy = y - m_PosY;
-  m_PosX = x;
-  m_PosY = y;
-  m_Left += dx;
-  m_Right += dx;
-  m_Top += dy;
-  m_Bottom += dy;
-}
-
-CPDF_ShadingObject::CPDF_ShadingObject() : m_pShading(nullptr) {}
-
-CPDF_ShadingObject::~CPDF_ShadingObject() {}
-
-CPDF_ShadingObject* CPDF_ShadingObject::Clone() const {
-  CPDF_ShadingObject* obj = new CPDF_ShadingObject;
-  obj->CopyData(this);
-
-  obj->m_pShading = m_pShading;
-  if (obj->m_pShading && obj->m_pShading->m_pDocument) {
-    CPDF_DocPageData* pDocPageData =
-        obj->m_pShading->m_pDocument->GetPageData();
-    obj->m_pShading = (CPDF_ShadingPattern*)pDocPageData->GetPattern(
-        obj->m_pShading->m_pShadingObj, m_pShading->m_bShadingObj,
-        &obj->m_pShading->m_ParentMatrix);
-  }
-  obj->m_Matrix = m_Matrix;
-  return obj;
-}
-
-void CPDF_ShadingObject::Transform(const CFX_Matrix& matrix) {
-  if (!m_ClipPath.IsNull()) {
-    m_ClipPath.GetModify();
-    m_ClipPath.Transform(matrix);
-  }
-  m_Matrix.Concat(matrix);
-  if (!m_ClipPath.IsNull()) {
-    CalcBoundingBox();
-  } else {
-    matrix.TransformRect(m_Left, m_Right, m_Top, m_Bottom);
-  }
-}
-
-void CPDF_ShadingObject::CalcBoundingBox() {
-  if (m_ClipPath.IsNull()) {
-    return;
-  }
-  CFX_FloatRect rect = m_ClipPath.GetClipBox();
-  m_Left = rect.left;
-  m_Bottom = rect.bottom;
-  m_Right = rect.right;
-  m_Top = rect.top;
-}
-
-CPDF_FormObject::CPDF_FormObject() : m_pForm(nullptr) {}
-
-CPDF_FormObject::~CPDF_FormObject() {
-  delete m_pForm;
-}
-
-void CPDF_FormObject::Transform(const CFX_Matrix& matrix) {
-  m_FormMatrix.Concat(matrix);
-  CalcBoundingBox();
-}
-
-CPDF_FormObject* CPDF_FormObject::Clone() const {
-  CPDF_FormObject* obj = new CPDF_FormObject;
-  obj->CopyData(this);
-
-  obj->m_pForm = m_pForm->Clone();
-  obj->m_FormMatrix = m_FormMatrix;
-  return obj;
-}
-
-void CPDF_FormObject::CalcBoundingBox() {
-  CFX_FloatRect form_rect = m_pForm->CalcBoundingBox();
-  form_rect.Transform(&m_FormMatrix);
-  m_Left = form_rect.left;
-  m_Bottom = form_rect.bottom;
-  m_Right = form_rect.right;
-  m_Top = form_rect.top;
-}
-
-CPDF_Page::CPDF_Page() : m_pPageRender(nullptr) {}
-
-void CPDF_Page::Load(CPDF_Document* pDocument,
-                     CPDF_Dictionary* pPageDict,
-                     FX_BOOL bPageCache) {
-  m_pDocument = (CPDF_Document*)pDocument;
-  m_pFormDict = pPageDict;
-  if (bPageCache) {
-    m_pPageRender =
-        CPDF_ModuleMgr::Get()->GetRenderModule()->CreatePageCache(this);
-  }
-  if (!pPageDict) {
-    m_PageWidth = m_PageHeight = 100 * 1.0f;
-    m_pPageResources = m_pResources = NULL;
-    return;
-  }
-  CPDF_Object* pageAttr = GetPageAttr("Resources");
-  m_pResources = pageAttr ? pageAttr->GetDict() : NULL;
-  m_pPageResources = m_pResources;
-  CPDF_Object* pRotate = GetPageAttr("Rotate");
-  int rotate = 0;
-  if (pRotate) {
-    rotate = pRotate->GetInteger() / 90 % 4;
-  }
-  if (rotate < 0) {
-    rotate += 4;
-  }
-  CPDF_Array* pMediaBox = ToArray(GetPageAttr("MediaBox"));
-  CFX_FloatRect mediabox;
-  if (pMediaBox) {
-    mediabox = pMediaBox->GetRect();
-    mediabox.Normalize();
-  }
-  if (mediabox.IsEmpty()) {
-    mediabox = CFX_FloatRect(0, 0, 612, 792);
-  }
-
-  CPDF_Array* pCropBox = ToArray(GetPageAttr("CropBox"));
-  if (pCropBox) {
-    m_BBox = pCropBox->GetRect();
-    m_BBox.Normalize();
-  }
-  if (m_BBox.IsEmpty()) {
-    m_BBox = mediabox;
-  } else {
-    m_BBox.Intersect(mediabox);
-  }
-  if (rotate % 2) {
-    m_PageHeight = m_BBox.right - m_BBox.left;
-    m_PageWidth = m_BBox.top - m_BBox.bottom;
-  } else {
-    m_PageWidth = m_BBox.right - m_BBox.left;
-    m_PageHeight = m_BBox.top - m_BBox.bottom;
-  }
-  switch (rotate) {
-    case 0:
-      m_PageMatrix.Set(1.0f, 0, 0, 1.0f, -m_BBox.left, -m_BBox.bottom);
-      break;
-    case 1:
-      m_PageMatrix.Set(0, -1.0f, 1.0f, 0, -m_BBox.bottom, m_BBox.right);
-      break;
-    case 2:
-      m_PageMatrix.Set(-1.0f, 0, 0, -1.0f, m_BBox.right, m_BBox.top);
-      break;
-    case 3:
-      m_PageMatrix.Set(0, 1.0f, -1.0f, 0, m_BBox.top, -m_BBox.left);
-      break;
-  }
-  m_Transparency = PDFTRANS_ISOLATED;
-  LoadTransInfo();
-}
-
-void CPDF_Page::StartParse(CPDF_ParseOptions* pOptions) {
-  if (m_ParseState == CONTENT_PARSED || m_ParseState == CONTENT_PARSING) {
-    return;
-  }
-  m_pParser.reset(new CPDF_ContentParser);
-  m_pParser->Start(this, pOptions);
-  m_ParseState = CONTENT_PARSING;
-}
-
-void CPDF_Page::ParseContent(CPDF_ParseOptions* pOptions) {
-  StartParse(pOptions);
-  ContinueParse(nullptr);
-}
-
-CPDF_Page::~CPDF_Page() {
-  if (m_pPageRender) {
-    IPDF_RenderModule* pModule = CPDF_ModuleMgr::Get()->GetRenderModule();
-    pModule->DestroyPageCache(m_pPageRender);
-  }
-}
-
-CPDF_Object* FPDFAPI_GetPageAttr(CPDF_Dictionary* pPageDict,
-                                 const CFX_ByteStringC& name) {
-  int level = 0;
-  while (1) {
-    CPDF_Object* pObj = pPageDict->GetElementValue(name);
-    if (pObj) {
-      return pObj;
-    }
-    CPDF_Dictionary* pParent = pPageDict->GetDictBy("Parent");
-    if (!pParent || pParent == pPageDict) {
-      return NULL;
-    }
-    pPageDict = pParent;
-    level++;
-    if (level == 1000) {
-      return NULL;
-    }
-  }
-}
-
-CPDF_Object* CPDF_Page::GetPageAttr(const CFX_ByteStringC& name) const {
-  return FPDFAPI_GetPageAttr(m_pFormDict, name);
-}
-
-void CPDF_Page::GetDisplayMatrix(CFX_Matrix& matrix,
-                                 int xPos,
-                                 int yPos,
-                                 int xSize,
-                                 int ySize,
-                                 int iRotate) const {
-  if (m_PageWidth == 0 || m_PageHeight == 0) {
-    return;
-  }
-  CFX_Matrix display_matrix;
-  int x0, y0, x1, y1, x2, y2;
-  iRotate %= 4;
-  switch (iRotate) {
-    case 0:
-      x0 = xPos;
-      y0 = yPos + ySize;
-      x1 = xPos;
-      y1 = yPos;
-      x2 = xPos + xSize;
-      y2 = yPos + ySize;
-      break;
-    case 1:
-      x0 = xPos;
-      y0 = yPos;
-      x1 = xPos + xSize;
-      y1 = yPos;
-      x2 = xPos;
-      y2 = yPos + ySize;
-      break;
-    case 2:
-      x0 = xPos + xSize;
-      y0 = yPos;
-      x1 = xPos + xSize;
-      y1 = yPos + ySize;
-      x2 = xPos;
-      y2 = yPos;
-      break;
-    case 3:
-      x0 = xPos + xSize;
-      y0 = yPos + ySize;
-      x1 = xPos;
-      y1 = yPos + ySize;
-      x2 = xPos + xSize;
-      y2 = yPos;
-      break;
-  }
-  display_matrix.Set(
-      ((FX_FLOAT)(x2 - x0)) / m_PageWidth, ((FX_FLOAT)(y2 - y0)) / m_PageWidth,
-      ((FX_FLOAT)(x1 - x0)) / m_PageHeight,
-      ((FX_FLOAT)(y1 - y0)) / m_PageHeight, (FX_FLOAT)x0, (FX_FLOAT)y0);
-  matrix = m_PageMatrix;
-  matrix.Concat(display_matrix);
-}