Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 1 | // Copyright 2014 PDFium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 | |
| 7 | #include "public/fpdf_flatten.h" |
| 8 | |
| 9 | #include <algorithm> |
| 10 | #include <memory> |
| 11 | #include <utility> |
| 12 | #include <vector> |
| 13 | |
| 14 | #include "core/fpdfapi/page/cpdf_page.h" |
| 15 | #include "core/fpdfapi/page/cpdf_pageobject.h" |
| 16 | #include "core/fpdfapi/parser/cpdf_array.h" |
| 17 | #include "core/fpdfapi/parser/cpdf_document.h" |
| 18 | #include "core/fpdfapi/parser/cpdf_name.h" |
| 19 | #include "core/fpdfapi/parser/cpdf_number.h" |
| 20 | #include "core/fpdfapi/parser/cpdf_reference.h" |
| 21 | #include "core/fpdfapi/parser/cpdf_stream.h" |
| 22 | #include "core/fpdfapi/parser/cpdf_stream_acc.h" |
| 23 | #include "core/fpdfdoc/cpdf_annot.h" |
| 24 | #include "fpdfsdk/fsdk_define.h" |
| 25 | #include "third_party/base/stl_util.h" |
| 26 | |
| 27 | enum FPDF_TYPE { MAX, MIN }; |
| 28 | enum FPDF_VALUE { TOP, LEFT, RIGHT, BOTTOM }; |
| 29 | |
| 30 | namespace { |
| 31 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 32 | bool IsValidRect(const CFX_FloatRect& rect, const CFX_FloatRect& rcPage) { |
| 33 | constexpr float kMinSize = 0.000001f; |
| 34 | if (rect.IsEmpty() || rect.Width() < kMinSize || rect.Height() < kMinSize) |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 35 | return false; |
| 36 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 37 | if (rcPage.IsEmpty()) |
| 38 | return true; |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 39 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 40 | constexpr float kMinBorderSize = 10.000001f; |
| 41 | return rect.left - rcPage.left >= -kMinBorderSize && |
| 42 | rect.right - rcPage.right <= kMinBorderSize && |
| 43 | rect.top - rcPage.top <= kMinBorderSize && |
| 44 | rect.bottom - rcPage.bottom >= -kMinBorderSize; |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 45 | } |
| 46 | |
| 47 | void GetContentsRect(CPDF_Document* pDoc, |
| 48 | CPDF_Dictionary* pDict, |
| 49 | std::vector<CFX_FloatRect>* pRectArray) { |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 50 | auto pPDFPage = pdfium::MakeUnique<CPDF_Page>(pDoc, pDict, false); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 51 | pPDFPage->ParseContent(); |
| 52 | |
| 53 | for (const auto& pPageObject : *pPDFPage->GetPageObjectList()) { |
| 54 | CFX_FloatRect rc; |
| 55 | rc.left = pPageObject->m_Left; |
| 56 | rc.right = pPageObject->m_Right; |
| 57 | rc.bottom = pPageObject->m_Bottom; |
| 58 | rc.top = pPageObject->m_Top; |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 59 | if (IsValidRect(rc, pDict->GetRectFor("MediaBox"))) |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 60 | pRectArray->push_back(rc); |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | void ParserStream(CPDF_Dictionary* pPageDic, |
| 65 | CPDF_Dictionary* pStream, |
| 66 | std::vector<CFX_FloatRect>* pRectArray, |
| 67 | std::vector<CPDF_Dictionary*>* pObjectArray) { |
| 68 | if (!pStream) |
| 69 | return; |
| 70 | CFX_FloatRect rect; |
| 71 | if (pStream->KeyExist("Rect")) |
| 72 | rect = pStream->GetRectFor("Rect"); |
| 73 | else if (pStream->KeyExist("BBox")) |
| 74 | rect = pStream->GetRectFor("BBox"); |
| 75 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 76 | if (IsValidRect(rect, pPageDic->GetRectFor("MediaBox"))) |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 77 | pRectArray->push_back(rect); |
| 78 | |
| 79 | pObjectArray->push_back(pStream); |
| 80 | } |
| 81 | |
| 82 | int ParserAnnots(CPDF_Document* pSourceDoc, |
| 83 | CPDF_Dictionary* pPageDic, |
| 84 | std::vector<CFX_FloatRect>* pRectArray, |
| 85 | std::vector<CPDF_Dictionary*>* pObjectArray, |
| 86 | int nUsage) { |
| 87 | if (!pSourceDoc || !pPageDic) |
| 88 | return FLATTEN_FAIL; |
| 89 | |
| 90 | GetContentsRect(pSourceDoc, pPageDic, pRectArray); |
| 91 | CPDF_Array* pAnnots = pPageDic->GetArrayFor("Annots"); |
| 92 | if (!pAnnots) |
| 93 | return FLATTEN_NOTHINGTODO; |
| 94 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 95 | for (const auto& pAnnot : *pAnnots) { |
| 96 | CPDF_Dictionary* pAnnotDic = ToDictionary(pAnnot->GetDirect()); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 97 | if (!pAnnotDic) |
| 98 | continue; |
| 99 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 100 | ByteString sSubtype = pAnnotDic->GetStringFor("Subtype"); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 101 | if (sSubtype == "Popup") |
| 102 | continue; |
| 103 | |
| 104 | int nAnnotFlag = pAnnotDic->GetIntegerFor("F"); |
| 105 | if (nAnnotFlag & ANNOTFLAG_HIDDEN) |
| 106 | continue; |
| 107 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 108 | bool bParseStream; |
| 109 | if (nUsage == FLAT_NORMALDISPLAY) |
| 110 | bParseStream = !(nAnnotFlag & ANNOTFLAG_INVISIBLE); |
| 111 | else |
| 112 | bParseStream = !!(nAnnotFlag & ANNOTFLAG_PRINT); |
| 113 | if (bParseStream) |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 114 | ParserStream(pPageDic, pAnnotDic, pRectArray, pObjectArray); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 115 | } |
| 116 | return FLATTEN_SUCCESS; |
| 117 | } |
| 118 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 119 | float GetMinMaxValue(const std::vector<CFX_FloatRect>& array, |
| 120 | FPDF_TYPE type, |
| 121 | FPDF_VALUE value) { |
| 122 | if (array.empty()) |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 123 | return 0.0f; |
| 124 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 125 | size_t nRects = array.size(); |
| 126 | std::vector<float> pArray(nRects); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 127 | switch (value) { |
| 128 | case LEFT: |
| 129 | for (size_t i = 0; i < nRects; i++) |
| 130 | pArray[i] = array[i].left; |
| 131 | break; |
| 132 | case TOP: |
| 133 | for (size_t i = 0; i < nRects; i++) |
| 134 | pArray[i] = array[i].top; |
| 135 | break; |
| 136 | case RIGHT: |
| 137 | for (size_t i = 0; i < nRects; i++) |
| 138 | pArray[i] = array[i].right; |
| 139 | break; |
| 140 | case BOTTOM: |
| 141 | for (size_t i = 0; i < nRects; i++) |
| 142 | pArray[i] = array[i].bottom; |
| 143 | break; |
| 144 | default: |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 145 | NOTREACHED(); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 146 | return 0.0f; |
| 147 | } |
| 148 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 149 | float fRet = pArray[0]; |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 150 | if (type == MAX) { |
| 151 | for (size_t i = 1; i < nRects; i++) |
| 152 | fRet = std::max(fRet, pArray[i]); |
| 153 | } else { |
| 154 | for (size_t i = 1; i < nRects; i++) |
| 155 | fRet = std::min(fRet, pArray[i]); |
| 156 | } |
| 157 | return fRet; |
| 158 | } |
| 159 | |
| 160 | CFX_FloatRect CalculateRect(std::vector<CFX_FloatRect>* pRectArray) { |
| 161 | CFX_FloatRect rcRet; |
| 162 | |
| 163 | rcRet.left = GetMinMaxValue(*pRectArray, MIN, LEFT); |
| 164 | rcRet.top = GetMinMaxValue(*pRectArray, MAX, TOP); |
| 165 | rcRet.right = GetMinMaxValue(*pRectArray, MAX, RIGHT); |
| 166 | rcRet.bottom = GetMinMaxValue(*pRectArray, MIN, BOTTOM); |
| 167 | |
| 168 | return rcRet; |
| 169 | } |
| 170 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 171 | uint32_t NewIndirectContentsStream(const ByteString& key, |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 172 | CPDF_Document* pDocument) { |
| 173 | CPDF_Stream* pNewContents = pDocument->NewIndirect<CPDF_Stream>( |
| 174 | nullptr, 0, |
| 175 | pdfium::MakeUnique<CPDF_Dictionary>(pDocument->GetByteStringPool())); |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 176 | ByteString sStream = |
| 177 | ByteString::Format("q 1 0 0 1 0 0 cm /%s Do Q", key.c_str()); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 178 | pNewContents->SetData(sStream.raw_str(), sStream.GetLength()); |
| 179 | return pNewContents->GetObjNum(); |
| 180 | } |
| 181 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 182 | void SetPageContents(const ByteString& key, |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 183 | CPDF_Dictionary* pPage, |
| 184 | CPDF_Document* pDocument) { |
| 185 | CPDF_Array* pContentsArray = nullptr; |
| 186 | CPDF_Stream* pContentsStream = pPage->GetStreamFor("Contents"); |
| 187 | if (!pContentsStream) { |
| 188 | pContentsArray = pPage->GetArrayFor("Contents"); |
| 189 | if (!pContentsArray) { |
| 190 | if (!key.IsEmpty()) { |
| 191 | pPage->SetNewFor<CPDF_Reference>( |
| 192 | "Contents", pDocument, NewIndirectContentsStream(key, pDocument)); |
| 193 | } |
| 194 | return; |
| 195 | } |
| 196 | } |
| 197 | pPage->ConvertToIndirectObjectFor("Contents", pDocument); |
| 198 | if (!pContentsArray) { |
| 199 | pContentsArray = pDocument->NewIndirect<CPDF_Array>(); |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 200 | auto pAcc = pdfium::MakeRetain<CPDF_StreamAcc>(pContentsStream); |
| 201 | pAcc->LoadAllDataFiltered(); |
| 202 | ByteString sStream = "q\n"; |
| 203 | ByteString sBody = ByteString(pAcc->GetData(), pAcc->GetSize()); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 204 | sStream = sStream + sBody + "\nQ"; |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 205 | pContentsStream->SetDataAndRemoveFilter(sStream.raw_str(), |
| 206 | sStream.GetLength()); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 207 | pContentsArray->AddNew<CPDF_Reference>(pDocument, |
| 208 | pContentsStream->GetObjNum()); |
| 209 | pPage->SetNewFor<CPDF_Reference>("Contents", pDocument, |
| 210 | pContentsArray->GetObjNum()); |
| 211 | } |
| 212 | if (!key.IsEmpty()) { |
| 213 | pContentsArray->AddNew<CPDF_Reference>( |
| 214 | pDocument, NewIndirectContentsStream(key, pDocument)); |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | CFX_Matrix GetMatrix(CFX_FloatRect rcAnnot, |
| 219 | CFX_FloatRect rcStream, |
| 220 | const CFX_Matrix& matrix) { |
| 221 | if (rcStream.IsEmpty()) |
| 222 | return CFX_Matrix(); |
| 223 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 224 | rcStream = matrix.TransformRect(rcStream); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 225 | rcStream.Normalize(); |
| 226 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 227 | float a = rcAnnot.Width() / rcStream.Width(); |
| 228 | float d = rcAnnot.Height() / rcStream.Height(); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 229 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 230 | float e = rcAnnot.left - rcStream.left * a; |
| 231 | float f = rcAnnot.bottom - rcStream.bottom * d; |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 232 | return CFX_Matrix(a, 0, 0, d, e, f); |
| 233 | } |
| 234 | |
| 235 | } // namespace |
| 236 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 237 | FPDF_EXPORT int FPDF_CALLCONV FPDFPage_Flatten(FPDF_PAGE page, int nFlag) { |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 238 | CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| 239 | if (!page) |
| 240 | return FLATTEN_FAIL; |
| 241 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 242 | CPDF_Document* pDocument = pPage->m_pDocument.Get(); |
| 243 | CPDF_Dictionary* pPageDict = pPage->m_pFormDict.Get(); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 244 | if (!pDocument || !pPageDict) |
| 245 | return FLATTEN_FAIL; |
| 246 | |
| 247 | std::vector<CPDF_Dictionary*> ObjectArray; |
| 248 | std::vector<CFX_FloatRect> RectArray; |
| 249 | int iRet = |
| 250 | ParserAnnots(pDocument, pPageDict, &RectArray, &ObjectArray, nFlag); |
| 251 | if (iRet == FLATTEN_NOTHINGTODO || iRet == FLATTEN_FAIL) |
| 252 | return iRet; |
| 253 | |
| 254 | CFX_FloatRect rcOriginalCB; |
| 255 | CFX_FloatRect rcMerger = CalculateRect(&RectArray); |
| 256 | CFX_FloatRect rcOriginalMB = pPageDict->GetRectFor("MediaBox"); |
| 257 | if (pPageDict->KeyExist("CropBox")) |
| 258 | rcOriginalMB = pPageDict->GetRectFor("CropBox"); |
| 259 | |
| 260 | if (rcOriginalMB.IsEmpty()) |
| 261 | rcOriginalMB = CFX_FloatRect(0.0f, 0.0f, 612.0f, 792.0f); |
| 262 | |
| 263 | rcMerger.left = std::max(rcMerger.left, rcOriginalMB.left); |
| 264 | rcMerger.right = std::min(rcMerger.right, rcOriginalMB.right); |
| 265 | rcMerger.bottom = std::max(rcMerger.bottom, rcOriginalMB.bottom); |
| 266 | rcMerger.top = std::min(rcMerger.top, rcOriginalMB.top); |
| 267 | if (pPageDict->KeyExist("ArtBox")) |
| 268 | rcOriginalCB = pPageDict->GetRectFor("ArtBox"); |
| 269 | else |
| 270 | rcOriginalCB = rcOriginalMB; |
| 271 | |
| 272 | if (!rcOriginalMB.IsEmpty()) { |
| 273 | CPDF_Array* pMediaBox = pPageDict->SetNewFor<CPDF_Array>("MediaBox"); |
| 274 | pMediaBox->AddNew<CPDF_Number>(rcOriginalMB.left); |
| 275 | pMediaBox->AddNew<CPDF_Number>(rcOriginalMB.bottom); |
| 276 | pMediaBox->AddNew<CPDF_Number>(rcOriginalMB.right); |
| 277 | pMediaBox->AddNew<CPDF_Number>(rcOriginalMB.top); |
| 278 | } |
| 279 | |
| 280 | if (!rcOriginalCB.IsEmpty()) { |
| 281 | CPDF_Array* pCropBox = pPageDict->SetNewFor<CPDF_Array>("ArtBox"); |
| 282 | pCropBox->AddNew<CPDF_Number>(rcOriginalCB.left); |
| 283 | pCropBox->AddNew<CPDF_Number>(rcOriginalCB.bottom); |
| 284 | pCropBox->AddNew<CPDF_Number>(rcOriginalCB.right); |
| 285 | pCropBox->AddNew<CPDF_Number>(rcOriginalCB.top); |
| 286 | } |
| 287 | |
| 288 | CPDF_Dictionary* pRes = pPageDict->GetDictFor("Resources"); |
| 289 | if (!pRes) |
| 290 | pRes = pPageDict->SetNewFor<CPDF_Dictionary>("Resources"); |
| 291 | |
| 292 | CPDF_Stream* pNewXObject = pDocument->NewIndirect<CPDF_Stream>( |
| 293 | nullptr, 0, |
| 294 | pdfium::MakeUnique<CPDF_Dictionary>(pDocument->GetByteStringPool())); |
| 295 | |
| 296 | uint32_t dwObjNum = pNewXObject->GetObjNum(); |
| 297 | CPDF_Dictionary* pPageXObject = pRes->GetDictFor("XObject"); |
| 298 | if (!pPageXObject) |
| 299 | pPageXObject = pRes->SetNewFor<CPDF_Dictionary>("XObject"); |
| 300 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 301 | ByteString key; |
| 302 | if (!ObjectArray.empty()) { |
| 303 | int i = 0; |
| 304 | while (i < INT_MAX) { |
| 305 | ByteString sKey = ByteString::Format("FFT%d", i); |
| 306 | if (!pPageXObject->KeyExist(sKey)) { |
| 307 | key = sKey; |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 308 | break; |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 309 | } |
| 310 | ++i; |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 311 | } |
| 312 | } |
| 313 | |
| 314 | SetPageContents(key, pPageDict, pDocument); |
| 315 | |
| 316 | CPDF_Dictionary* pNewXORes = nullptr; |
| 317 | if (!key.IsEmpty()) { |
| 318 | pPageXObject->SetNewFor<CPDF_Reference>(key, pDocument, dwObjNum); |
| 319 | CPDF_Dictionary* pNewOXbjectDic = pNewXObject->GetDict(); |
| 320 | pNewXORes = pNewOXbjectDic->SetNewFor<CPDF_Dictionary>("Resources"); |
| 321 | pNewOXbjectDic->SetNewFor<CPDF_Name>("Type", "XObject"); |
| 322 | pNewOXbjectDic->SetNewFor<CPDF_Name>("Subtype", "Form"); |
| 323 | pNewOXbjectDic->SetNewFor<CPDF_Number>("FormType", 1); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 324 | CFX_FloatRect rcBBox = pPageDict->GetRectFor("ArtBox"); |
| 325 | pNewOXbjectDic->SetRectFor("BBox", rcBBox); |
| 326 | } |
| 327 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 328 | for (size_t i = 0; i < ObjectArray.size(); ++i) { |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 329 | CPDF_Dictionary* pAnnotDic = ObjectArray[i]; |
| 330 | if (!pAnnotDic) |
| 331 | continue; |
| 332 | |
| 333 | CFX_FloatRect rcAnnot = pAnnotDic->GetRectFor("Rect"); |
| 334 | rcAnnot.Normalize(); |
| 335 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 336 | ByteString sAnnotState = pAnnotDic->GetStringFor("AS"); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 337 | CPDF_Dictionary* pAnnotAP = pAnnotDic->GetDictFor("AP"); |
| 338 | if (!pAnnotAP) |
| 339 | continue; |
| 340 | |
| 341 | CPDF_Stream* pAPStream = pAnnotAP->GetStreamFor("N"); |
| 342 | if (!pAPStream) { |
| 343 | CPDF_Dictionary* pAPDic = pAnnotAP->GetDictFor("N"); |
| 344 | if (!pAPDic) |
| 345 | continue; |
| 346 | |
| 347 | if (!sAnnotState.IsEmpty()) { |
| 348 | pAPStream = pAPDic->GetStreamFor(sAnnotState); |
| 349 | } else { |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 350 | if (pAPDic->GetCount() > 0) { |
| 351 | CPDF_Object* pFirstObj = pAPDic->begin()->second.get(); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 352 | if (pFirstObj) { |
| 353 | if (pFirstObj->IsReference()) |
| 354 | pFirstObj = pFirstObj->GetDirect(); |
| 355 | if (!pFirstObj->IsStream()) |
| 356 | continue; |
| 357 | pAPStream = pFirstObj->AsStream(); |
| 358 | } |
| 359 | } |
| 360 | } |
| 361 | } |
| 362 | if (!pAPStream) |
| 363 | continue; |
| 364 | |
| 365 | CPDF_Dictionary* pAPDic = pAPStream->GetDict(); |
| 366 | CFX_FloatRect rcStream; |
| 367 | if (pAPDic->KeyExist("Rect")) |
| 368 | rcStream = pAPDic->GetRectFor("Rect"); |
| 369 | else if (pAPDic->KeyExist("BBox")) |
| 370 | rcStream = pAPDic->GetRectFor("BBox"); |
| 371 | |
| 372 | if (rcStream.IsEmpty()) |
| 373 | continue; |
| 374 | |
| 375 | CPDF_Object* pObj = pAPStream; |
| 376 | if (pObj->IsInline()) { |
| 377 | std::unique_ptr<CPDF_Object> pNew = pObj->Clone(); |
| 378 | pObj = pNew.get(); |
| 379 | pDocument->AddIndirectObject(std::move(pNew)); |
| 380 | } |
| 381 | |
| 382 | CPDF_Dictionary* pObjDic = pObj->GetDict(); |
| 383 | if (pObjDic) { |
| 384 | pObjDic->SetNewFor<CPDF_Name>("Type", "XObject"); |
| 385 | pObjDic->SetNewFor<CPDF_Name>("Subtype", "Form"); |
| 386 | } |
| 387 | |
| 388 | CPDF_Dictionary* pXObject = pNewXORes->GetDictFor("XObject"); |
| 389 | if (!pXObject) |
| 390 | pXObject = pNewXORes->SetNewFor<CPDF_Dictionary>("XObject"); |
| 391 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 392 | ByteString sFormName = ByteString::Format("F%d", i); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 393 | pXObject->SetNewFor<CPDF_Reference>(sFormName, pDocument, |
| 394 | pObj->GetObjNum()); |
| 395 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 396 | auto pAcc = pdfium::MakeRetain<CPDF_StreamAcc>(pNewXObject); |
| 397 | pAcc->LoadAllDataFiltered(); |
| 398 | ByteString sStream(pAcc->GetData(), pAcc->GetSize()); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 399 | CFX_Matrix matrix = pAPDic->GetMatrixFor("Matrix"); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 400 | CFX_Matrix m = GetMatrix(rcAnnot, rcStream, matrix); |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 401 | sStream += ByteString::Format("q %f 0 0 %f %f %f cm /%s Do Q\n", m.a, m.d, |
| 402 | m.e, m.f, sFormName.c_str()); |
| 403 | pNewXObject->SetDataAndRemoveFilter(sStream.raw_str(), sStream.GetLength()); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 404 | } |
| 405 | pPageDict->RemoveFor("Annots"); |
| 406 | return FLATTEN_SUCCESS; |
| 407 | } |