Move fpdfsdk/src up to fpdfsdk/.

fpdfsdk/src/fpdf_flatten.cpp

Index: fpdfsdk/src/fpdf_flatten.cpp
diff --git a/fpdfsdk/src/fpdf_flatten.cpp b/fpdfsdk/src/fpdf_flatten.cpp
deleted file mode 100644
index cca63d6b763155a1180b585889894d491b7a7189..0000000000000000000000000000000000000000
--- a/fpdfsdk/src/fpdf_flatten.cpp
+++ /dev/null
@@ -1,518 +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 "public/fpdf_flatten.h"
-
-#include <algorithm>
-
-#include "core/include/fpdfapi/cpdf_array.h"
-#include "core/include/fpdfapi/cpdf_document.h"
-#include "core/include/fpdfapi/cpdf_number.h"
-#include "fpdfsdk/include/fsdk_define.h"
-
-typedef CFX_ArrayTemplate<CPDF_Dictionary*> CPDF_ObjectArray;
-typedef CFX_ArrayTemplate<CFX_FloatRect> CPDF_RectArray;
-
-enum FPDF_TYPE { MAX, MIN };
-enum FPDF_VALUE { TOP, LEFT, RIGHT, BOTTOM };
-
-FX_BOOL IsValiableRect(CFX_FloatRect rect, CFX_FloatRect rcPage) {
-  if (rect.left - rect.right > 0.000001f || rect.bottom - rect.top > 0.000001f)
-    return FALSE;
-
-  if (rect.left == 0.0f && rect.top == 0.0f && rect.right == 0.0f &&
-      rect.bottom == 0.0f)
-    return FALSE;
-
-  if (!rcPage.IsEmpty()) {
-    if (rect.left - rcPage.left < -10.000001f ||
-        rect.right - rcPage.right > 10.000001f ||
-        rect.top - rcPage.top > 10.000001f ||
-        rect.bottom - rcPage.bottom < -10.000001f)
-      return FALSE;
-  }
-
-  return TRUE;
-}
-
-void GetContentsRect(CPDF_Document* pDoc,
-                     CPDF_Dictionary* pDict,
-                     CPDF_RectArray* pRectArray) {
-  std::unique_ptr<CPDF_Page> pPDFPage(new CPDF_Page);
-  pPDFPage->Load(pDoc, pDict, FALSE);
-  pPDFPage->ParseContent(nullptr);
-
-  for (auto& pPageObject : *pPDFPage->GetPageObjectList()) {
-    if (!pPageObject)
-      continue;
-
-    CFX_FloatRect rc;
-    rc.left = pPageObject->m_Left;
-    rc.right = pPageObject->m_Right;
-    rc.bottom = pPageObject->m_Bottom;
-    rc.top = pPageObject->m_Top;
-    if (IsValiableRect(rc, pDict->GetRectBy("MediaBox")))
-      pRectArray->Add(rc);
-  }
-}
-
-void ParserStream(CPDF_Dictionary* pPageDic,
-                  CPDF_Dictionary* pStream,
-                  CPDF_RectArray* pRectArray,
-                  CPDF_ObjectArray* pObjectArray) {
-  if (!pStream)
-    return;
-  CFX_FloatRect rect;
-  if (pStream->KeyExist("Rect"))
-    rect = pStream->GetRectBy("Rect");
-  else if (pStream->KeyExist("BBox"))
-    rect = pStream->GetRectBy("BBox");
-
-  if (IsValiableRect(rect, pPageDic->GetRectBy("MediaBox")))
-    pRectArray->Add(rect);
-
-  pObjectArray->Add(pStream);
-}
-
-int ParserAnnots(CPDF_Document* pSourceDoc,
-                 CPDF_Dictionary* pPageDic,
-                 CPDF_RectArray* pRectArray,
-                 CPDF_ObjectArray* pObjectArray,
-                 int nUsage) {
-  if (!pSourceDoc || !pPageDic)
-    return FLATTEN_FAIL;
-
-  GetContentsRect(pSourceDoc, pPageDic, pRectArray);
-  CPDF_Array* pAnnots = pPageDic->GetArrayBy("Annots");
-  if (!pAnnots)
-    return FLATTEN_NOTHINGTODO;
-
-  FX_DWORD dwSize = pAnnots->GetCount();
-  for (int i = 0; i < (int)dwSize; i++) {
-    CPDF_Dictionary* pAnnotDic = ToDictionary(pAnnots->GetElementValue(i));
-    if (!pAnnotDic)
-      continue;
-
-    CFX_ByteString sSubtype = pAnnotDic->GetStringBy("Subtype");
-    if (sSubtype == "Popup")
-      continue;
-
-    int nAnnotFlag = pAnnotDic->GetIntegerBy("F");
-    if (nAnnotFlag & ANNOTFLAG_HIDDEN)
-      continue;
-
-    if (nUsage == FLAT_NORMALDISPLAY) {
-      if (nAnnotFlag & ANNOTFLAG_INVISIBLE)
-        continue;
-
-      ParserStream(pPageDic, pAnnotDic, pRectArray, pObjectArray);
-    } else {
-      if (nAnnotFlag & ANNOTFLAG_PRINT)
-        ParserStream(pPageDic, pAnnotDic, pRectArray, pObjectArray);
-    }
-  }
-  return FLATTEN_SUCCESS;
-}
-
-FX_FLOAT GetMinMaxValue(CPDF_RectArray& array,
-                        FPDF_TYPE type,
-                        FPDF_VALUE value) {
-  int nRects = array.GetSize();
-  FX_FLOAT fRet = 0.0f;
-
-  if (nRects <= 0)
-    return 0.0f;
-
-  FX_FLOAT* pArray = new FX_FLOAT[nRects];
-  switch (value) {
-    case LEFT: {
-      for (int i = 0; i < nRects; i++)
-        pArray[i] = CFX_FloatRect(array.GetAt(i)).left;
-
-      break;
-    }
-    case TOP: {
-      for (int i = 0; i < nRects; i++)
-        pArray[i] = CFX_FloatRect(array.GetAt(i)).top;
-
-      break;
-    }
-    case RIGHT: {
-      for (int i = 0; i < nRects; i++)
-        pArray[i] = CFX_FloatRect(array.GetAt(i)).right;
-
-      break;
-    }
-    case BOTTOM: {
-      for (int i = 0; i < nRects; i++)
-        pArray[i] = CFX_FloatRect(array.GetAt(i)).bottom;
-
-      break;
-    }
-    default:
-      break;
-  }
-  fRet = pArray[0];
-  if (type == MAX) {
-    for (int i = 1; i < nRects; i++)
-      if (fRet <= pArray[i])
-        fRet = pArray[i];
-  } else {
-    for (int i = 1; i < nRects; i++)
-      if (fRet >= pArray[i])
-        fRet = pArray[i];
-  }
-  delete[] pArray;
-  return fRet;
-}
-
-CFX_FloatRect CalculateRect(CPDF_RectArray* pRectArray) {
-  CFX_FloatRect rcRet;
-
-  rcRet.left = GetMinMaxValue(*pRectArray, MIN, LEFT);
-  rcRet.top = GetMinMaxValue(*pRectArray, MAX, TOP);
-  rcRet.right = GetMinMaxValue(*pRectArray, MAX, RIGHT);
-  rcRet.bottom = GetMinMaxValue(*pRectArray, MIN, BOTTOM);
-
-  return rcRet;
-}
-
-void SetPageContents(CFX_ByteString key,
-                     CPDF_Dictionary* pPage,
-                     CPDF_Document* pDocument) {
-  CPDF_Object* pContentsObj = pPage->GetStreamBy("Contents");
-  if (!pContentsObj) {
-    pContentsObj = pPage->GetArrayBy("Contents");
-  }
-
-  if (!pContentsObj) {
-    // Create a new contents dictionary
-    if (!key.IsEmpty()) {
-      CPDF_Stream* pNewContents = new CPDF_Stream(NULL, 0, new CPDF_Dictionary);
-      pPage->SetAtReference("Contents", pDocument,
-                            pDocument->AddIndirectObject(pNewContents));
-
-      CFX_ByteString sStream;
-      sStream.Format("q 1 0 0 1 0 0 cm /%s Do Q", key.c_str());
-      pNewContents->SetData((const uint8_t*)sStream, sStream.GetLength(), FALSE,
-                            FALSE);
-    }
-    return;
-  }
-
-  CPDF_Array* pContentsArray = NULL;
-
-  switch (pContentsObj->GetType()) {
-    case CPDF_Object::STREAM: {
-      pContentsArray = new CPDF_Array;
-      CPDF_Stream* pContents = pContentsObj->AsStream();
-      FX_DWORD dwObjNum = pDocument->AddIndirectObject(pContents);
-      CPDF_StreamAcc acc;
-      acc.LoadAllData(pContents);
-      CFX_ByteString sStream = "q\n";
-      CFX_ByteString sBody =
-          CFX_ByteString((const FX_CHAR*)acc.GetData(), acc.GetSize());
-      sStream = sStream + sBody + "\nQ";
-      pContents->SetData((const uint8_t*)sStream, sStream.GetLength(), FALSE,
-                         FALSE);
-      pContentsArray->AddReference(pDocument, dwObjNum);
-      break;
-    }
-
-    case CPDF_Object::ARRAY: {
-      pContentsArray = pContentsObj->AsArray();
-      break;
-    }
-    default:
-      break;
-  }
-
-  if (!pContentsArray)
-    return;
-
-  FX_DWORD dwObjNum = pDocument->AddIndirectObject(pContentsArray);
-  pPage->SetAtReference("Contents", pDocument, dwObjNum);
-
-  if (!key.IsEmpty()) {
-    CPDF_Stream* pNewContents = new CPDF_Stream(NULL, 0, new CPDF_Dictionary);
-    dwObjNum = pDocument->AddIndirectObject(pNewContents);
-    pContentsArray->AddReference(pDocument, dwObjNum);
-
-    CFX_ByteString sStream;
-    sStream.Format("q 1 0 0 1 0 0 cm /%s Do Q", key.c_str());
-    pNewContents->SetData((const uint8_t*)sStream, sStream.GetLength(), FALSE,
-                          FALSE);
-  }
-}
-
-CFX_Matrix GetMatrix(CFX_FloatRect rcAnnot,
-                     CFX_FloatRect rcStream,
-                     const CFX_Matrix& matrix) {
-  if (rcStream.IsEmpty())
-    return CFX_Matrix();
-
-  matrix.TransformRect(rcStream);
-  rcStream.Normalize();
-
-  FX_FLOAT a = rcAnnot.Width() / rcStream.Width();
-  FX_FLOAT d = rcAnnot.Height() / rcStream.Height();
-
-  FX_FLOAT e = rcAnnot.left - rcStream.left * a;
-  FX_FLOAT f = rcAnnot.bottom - rcStream.bottom * d;
-  return CFX_Matrix(a, 0, 0, d, e, f);
-}
-
-void GetOffset(FX_FLOAT& fa,
-               FX_FLOAT& fd,
-               FX_FLOAT& fe,
-               FX_FLOAT& ff,
-               CFX_FloatRect rcAnnot,
-               CFX_FloatRect rcStream,
-               const CFX_Matrix& matrix) {
-  FX_FLOAT fStreamWidth = 0.0f;
-  FX_FLOAT fStreamHeight = 0.0f;
-
-  if (matrix.a != 0 && matrix.d != 0) {
-    fStreamWidth = rcStream.right - rcStream.left;
-    fStreamHeight = rcStream.top - rcStream.bottom;
-  } else {
-    fStreamWidth = rcStream.top - rcStream.bottom;
-    fStreamHeight = rcStream.right - rcStream.left;
-  }
-
-  FX_FLOAT x1 =
-      matrix.a * rcStream.left + matrix.c * rcStream.bottom + matrix.e;
-  FX_FLOAT y1 =
-      matrix.b * rcStream.left + matrix.d * rcStream.bottom + matrix.f;
-  FX_FLOAT x2 = matrix.a * rcStream.left + matrix.c * rcStream.top + matrix.e;
-  FX_FLOAT y2 = matrix.b * rcStream.left + matrix.d * rcStream.top + matrix.f;
-  FX_FLOAT x3 =
-      matrix.a * rcStream.right + matrix.c * rcStream.bottom + matrix.e;
-  FX_FLOAT y3 =
-      matrix.b * rcStream.right + matrix.d * rcStream.bottom + matrix.f;
-  FX_FLOAT x4 = matrix.a * rcStream.right + matrix.c * rcStream.top + matrix.e;
-  FX_FLOAT y4 = matrix.b * rcStream.right + matrix.d * rcStream.top + matrix.f;
-
-  FX_FLOAT left = std::min(std::min(x1, x2), std::min(x3, x4));
-  FX_FLOAT bottom = std::min(std::min(y1, y2), std::min(y3, y4));
-
-  fa = (rcAnnot.right - rcAnnot.left) / fStreamWidth;
-  fd = (rcAnnot.top - rcAnnot.bottom) / fStreamHeight;
-  fe = rcAnnot.left - left * fa;
-  ff = rcAnnot.bottom - bottom * fd;
-}
-
-DLLEXPORT int STDCALL FPDFPage_Flatten(FPDF_PAGE page, int nFlag) {
-  CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
-  if (!page) {
-    return FLATTEN_FAIL;
-  }
-
-  CPDF_Document* pDocument = pPage->m_pDocument;
-  CPDF_Dictionary* pPageDict = pPage->m_pFormDict;
-
-  if (!pDocument || !pPageDict) {
-    return FLATTEN_FAIL;
-  }
-
-  CPDF_ObjectArray ObjectArray;
-  CPDF_RectArray RectArray;
-
-  int iRet = FLATTEN_FAIL;
-  iRet = ParserAnnots(pDocument, pPageDict, &RectArray, &ObjectArray, nFlag);
-  if (iRet == FLATTEN_NOTHINGTODO || iRet == FLATTEN_FAIL)
-    return iRet;
-
-  CFX_FloatRect rcOriginalCB;
-  CFX_FloatRect rcMerger = CalculateRect(&RectArray);
-  CFX_FloatRect rcOriginalMB = pPageDict->GetRectBy("MediaBox");
-
-  if (pPageDict->KeyExist("CropBox"))
-    rcOriginalMB = pPageDict->GetRectBy("CropBox");
-
-  if (rcOriginalMB.IsEmpty()) {
-    rcOriginalMB = CFX_FloatRect(0.0f, 0.0f, 612.0f, 792.0f);
-  }
-
-  rcMerger.left =
-      rcMerger.left < rcOriginalMB.left ? rcOriginalMB.left : rcMerger.left;
-  rcMerger.right =
-      rcMerger.right > rcOriginalMB.right ? rcOriginalMB.right : rcMerger.right;
-  rcMerger.top =
-      rcMerger.top > rcOriginalMB.top ? rcOriginalMB.top : rcMerger.top;
-  rcMerger.bottom = rcMerger.bottom < rcOriginalMB.bottom ? rcOriginalMB.bottom
-                                                          : rcMerger.bottom;
-
-  if (pPageDict->KeyExist("ArtBox"))
-    rcOriginalCB = pPageDict->GetRectBy("ArtBox");
-  else
-    rcOriginalCB = rcOriginalMB;
-
-  if (!rcOriginalMB.IsEmpty()) {
-    CPDF_Array* pMediaBox = new CPDF_Array();
-    pMediaBox->Add(new CPDF_Number(rcOriginalMB.left));
-    pMediaBox->Add(new CPDF_Number(rcOriginalMB.bottom));
-    pMediaBox->Add(new CPDF_Number(rcOriginalMB.right));
-    pMediaBox->Add(new CPDF_Number(rcOriginalMB.top));
-    pPageDict->SetAt("MediaBox", pMediaBox);
-  }
-
-  if (!rcOriginalCB.IsEmpty()) {
-    CPDF_Array* pCropBox = new CPDF_Array();
-    pCropBox->Add(new CPDF_Number(rcOriginalCB.left));
-    pCropBox->Add(new CPDF_Number(rcOriginalCB.bottom));
-    pCropBox->Add(new CPDF_Number(rcOriginalCB.right));
-    pCropBox->Add(new CPDF_Number(rcOriginalCB.top));
-    pPageDict->SetAt("ArtBox", pCropBox);
-  }
-
-  CPDF_Dictionary* pRes = pPageDict->GetDictBy("Resources");
-  if (!pRes) {
-    pRes = new CPDF_Dictionary;
-    pPageDict->SetAt("Resources", pRes);
-  }
-
-  CPDF_Stream* pNewXObject = new CPDF_Stream(NULL, 0, new CPDF_Dictionary);
-  FX_DWORD dwObjNum = pDocument->AddIndirectObject(pNewXObject);
-  CPDF_Dictionary* pPageXObject = pRes->GetDictBy("XObject");
-  if (!pPageXObject) {
-    pPageXObject = new CPDF_Dictionary;
-    pRes->SetAt("XObject", pPageXObject);
-  }
-
-  CFX_ByteString key = "";
-  int nStreams = ObjectArray.GetSize();
-
-  if (nStreams > 0) {
-    for (int iKey = 0; /*iKey < 100*/; iKey++) {
-      char sExtend[5] = {};
-      FXSYS_itoa(iKey, sExtend, 10);
-      key = CFX_ByteString("FFT") + CFX_ByteString(sExtend);
-
-      if (!pPageXObject->KeyExist(key))
-        break;
-    }
-  }
-
-  SetPageContents(key, pPageDict, pDocument);
-
-  CPDF_Dictionary* pNewXORes = NULL;
-
-  if (!key.IsEmpty()) {
-    pPageXObject->SetAtReference(key, pDocument, dwObjNum);
-    CPDF_Dictionary* pNewOXbjectDic = pNewXObject->GetDict();
-    pNewXORes = new CPDF_Dictionary;
-    pNewOXbjectDic->SetAt("Resources", pNewXORes);
-    pNewOXbjectDic->SetAtName("Type", "XObject");
-    pNewOXbjectDic->SetAtName("Subtype", "Form");
-    pNewOXbjectDic->SetAtInteger("FormType", 1);
-    pNewOXbjectDic->SetAtName("Name", "FRM");
-    CFX_FloatRect rcBBox = pPageDict->GetRectBy("ArtBox");
-    pNewOXbjectDic->SetAtRect("BBox", rcBBox);
-  }
-
-  for (int i = 0; i < nStreams; i++) {
-    CPDF_Dictionary* pAnnotDic = ObjectArray.GetAt(i);
-    if (!pAnnotDic)
-      continue;
-
-    CFX_FloatRect rcAnnot = pAnnotDic->GetRectBy("Rect");
-    rcAnnot.Normalize();
-
-    CFX_ByteString sAnnotState = pAnnotDic->GetStringBy("AS");
-    CPDF_Dictionary* pAnnotAP = pAnnotDic->GetDictBy("AP");
-    if (!pAnnotAP)
-      continue;
-
-    CPDF_Stream* pAPStream = pAnnotAP->GetStreamBy("N");
-    if (!pAPStream) {
-      CPDF_Dictionary* pAPDic = pAnnotAP->GetDictBy("N");
-      if (!pAPDic)
-        continue;
-
-      if (!sAnnotState.IsEmpty()) {
-        pAPStream = pAPDic->GetStreamBy(sAnnotState);
-      } else {
-        auto it = pAPDic->begin();
-        if (it != pAPDic->end()) {
-          CPDF_Object* pFirstObj = it->second;
-          if (pFirstObj) {
-            if (pFirstObj->IsReference())
-              pFirstObj = pFirstObj->GetDirect();
-            if (!pFirstObj->IsStream())
-              continue;
-            pAPStream = pFirstObj->AsStream();
-          }
-        }
-      }
-    }
-    if (!pAPStream)
-      continue;
-
-    CPDF_Dictionary* pAPDic = pAPStream->GetDict();
-    CFX_Matrix matrix = pAPDic->GetMatrixBy("Matrix");
-
-    CFX_FloatRect rcStream;
-    if (pAPDic->KeyExist("Rect"))
-      rcStream = pAPDic->GetRectBy("Rect");
-    else if (pAPDic->KeyExist("BBox"))
-      rcStream = pAPDic->GetRectBy("BBox");
-
-    if (rcStream.IsEmpty())
-      continue;
-
-    CPDF_Object* pObj = pAPStream;
-
-    if (pObj) {
-      CPDF_Dictionary* pObjDic = pObj->GetDict();
-      if (pObjDic) {
-        pObjDic->SetAtName("Type", "XObject");
-        pObjDic->SetAtName("Subtype", "Form");
-      }
-    }
-
-    CPDF_Dictionary* pXObject = pNewXORes->GetDictBy("XObject");
-    if (!pXObject) {
-      pXObject = new CPDF_Dictionary;
-      pNewXORes->SetAt("XObject", pXObject);
-    }
-
-    CFX_ByteString sFormName;
-    sFormName.Format("F%d", i);
-    FX_DWORD dwObjNum = pDocument->AddIndirectObject(pObj);
-    pXObject->SetAtReference(sFormName, pDocument, dwObjNum);
-
-    CPDF_StreamAcc acc;
-    acc.LoadAllData(pNewXObject);
-
-    const uint8_t* pData = acc.GetData();
-    CFX_ByteString sStream(pData, acc.GetSize());
-    CFX_ByteString sTemp;
-
-    if (matrix.IsIdentity()) {
-      matrix.a = 1.0f;
-      matrix.b = 0.0f;
-      matrix.c = 0.0f;
-      matrix.d = 1.0f;
-      matrix.e = 0.0f;
-      matrix.f = 0.0f;
-    }
-
-    CFX_Matrix m = GetMatrix(rcAnnot, rcStream, matrix);
-    sTemp.Format("q %f 0 0 %f %f %f cm /%s Do Q\n", m.a, m.d, m.e, m.f,
-                 sFormName.c_str());
-    sStream += sTemp;
-
-    pNewXObject->SetData((const uint8_t*)sStream, sStream.GetLength(), FALSE,
-                         FALSE);
-  }
-  pPageDict->RemoveAt("Annots");
-
-  ObjectArray.RemoveAll();
-  RectArray.RemoveAll();
-
-  return FLATTEN_SUCCESS;
-}