Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -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_edit.h" |
| 8 | |
| 9 | #include <algorithm> |
| 10 | #include <memory> |
| 11 | #include <utility> |
| 12 | #include <vector> |
| 13 | |
| 14 | #include "constants/page_object.h" |
| 15 | #include "core/fpdfapi/edit/cpdf_pagecontentgenerator.h" |
| 16 | #include "core/fpdfapi/page/cpdf_colorspace.h" |
| 17 | #include "core/fpdfapi/page/cpdf_docpagedata.h" |
| 18 | #include "core/fpdfapi/page/cpdf_form.h" |
| 19 | #include "core/fpdfapi/page/cpdf_formobject.h" |
| 20 | #include "core/fpdfapi/page/cpdf_imageobject.h" |
| 21 | #include "core/fpdfapi/page/cpdf_page.h" |
| 22 | #include "core/fpdfapi/page/cpdf_pageobject.h" |
| 23 | #include "core/fpdfapi/page/cpdf_pathobject.h" |
| 24 | #include "core/fpdfapi/page/cpdf_shadingobject.h" |
| 25 | #include "core/fpdfapi/parser/cpdf_array.h" |
| 26 | #include "core/fpdfapi/parser/cpdf_dictionary.h" |
| 27 | #include "core/fpdfapi/parser/cpdf_document.h" |
| 28 | #include "core/fpdfapi/parser/cpdf_number.h" |
| 29 | #include "core/fpdfapi/parser/cpdf_string.h" |
| 30 | #include "core/fpdfapi/render/cpdf_docrenderdata.h" |
| 31 | #include "core/fpdfapi/render/cpdf_pagerendercache.h" |
| 32 | #include "core/fpdfdoc/cpdf_annot.h" |
| 33 | #include "core/fpdfdoc/cpdf_annotlist.h" |
| 34 | #include "core/fxcrt/fx_extension.h" |
| 35 | #include "fpdfsdk/cpdfsdk_helpers.h" |
| 36 | #include "public/fpdf_formfill.h" |
| 37 | #include "third_party/base/logging.h" |
| 38 | #include "third_party/base/ptr_util.h" |
| 39 | #include "third_party/base/stl_util.h" |
| 40 | |
| 41 | #ifdef PDF_ENABLE_XFA |
| 42 | #include "fpdfsdk/fpdfxfa/cpdfxfa_context.h" |
| 43 | #include "fpdfsdk/fpdfxfa/cpdfxfa_page.h" |
| 44 | #endif // PDF_ENABLE_XFA |
| 45 | |
| 46 | namespace { |
| 47 | |
| 48 | static_assert(FPDF_PAGEOBJ_TEXT == CPDF_PageObject::TEXT, |
| 49 | "FPDF_PAGEOBJ_TEXT/CPDF_PageObject::TEXT mismatch"); |
| 50 | static_assert(FPDF_PAGEOBJ_PATH == CPDF_PageObject::PATH, |
| 51 | "FPDF_PAGEOBJ_PATH/CPDF_PageObject::PATH mismatch"); |
| 52 | static_assert(FPDF_PAGEOBJ_IMAGE == CPDF_PageObject::IMAGE, |
| 53 | "FPDF_PAGEOBJ_IMAGE/CPDF_PageObject::IMAGE mismatch"); |
| 54 | static_assert(FPDF_PAGEOBJ_SHADING == CPDF_PageObject::SHADING, |
| 55 | "FPDF_PAGEOBJ_SHADING/CPDF_PageObject::SHADING mismatch"); |
| 56 | static_assert(FPDF_PAGEOBJ_FORM == CPDF_PageObject::FORM, |
| 57 | "FPDF_PAGEOBJ_FORM/CPDF_PageObject::FORM mismatch"); |
| 58 | |
| 59 | bool IsPageObject(CPDF_Page* pPage) { |
| 60 | if (!pPage) |
| 61 | return false; |
| 62 | |
| 63 | const CPDF_Dictionary* pFormDict = pPage->GetDict(); |
| 64 | if (!pFormDict->KeyExist("Type")) |
| 65 | return false; |
| 66 | |
| 67 | const CPDF_Object* pObject = pFormDict->GetObjectFor("Type")->GetDirect(); |
| 68 | return pObject && !pObject->GetString().Compare("Page"); |
| 69 | } |
| 70 | |
| 71 | void CalcBoundingBox(CPDF_PageObject* pPageObj) { |
| 72 | switch (pPageObj->GetType()) { |
| 73 | case CPDF_PageObject::TEXT: { |
| 74 | break; |
| 75 | } |
| 76 | case CPDF_PageObject::PATH: { |
| 77 | CPDF_PathObject* pPathObj = pPageObj->AsPath(); |
| 78 | pPathObj->CalcBoundingBox(); |
| 79 | break; |
| 80 | } |
| 81 | case CPDF_PageObject::IMAGE: { |
| 82 | CPDF_ImageObject* pImageObj = pPageObj->AsImage(); |
| 83 | pImageObj->CalcBoundingBox(); |
| 84 | break; |
| 85 | } |
| 86 | case CPDF_PageObject::SHADING: { |
| 87 | CPDF_ShadingObject* pShadingObj = pPageObj->AsShading(); |
| 88 | pShadingObj->CalcBoundingBox(); |
| 89 | break; |
| 90 | } |
| 91 | case CPDF_PageObject::FORM: { |
| 92 | CPDF_FormObject* pFormObj = pPageObj->AsForm(); |
| 93 | pFormObj->CalcBoundingBox(); |
| 94 | break; |
| 95 | } |
| 96 | default: { |
| 97 | NOTREACHED(); |
| 98 | break; |
| 99 | } |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | CPDF_Dictionary* GetMarkParamDict(FPDF_PAGEOBJECTMARK mark) { |
| 104 | CPDF_ContentMarkItem* pMarkItem = |
| 105 | CPDFContentMarkItemFromFPDFPageObjectMark(mark); |
| 106 | return pMarkItem ? pMarkItem->GetParam() : nullptr; |
| 107 | } |
| 108 | |
| 109 | CPDF_Dictionary* GetOrCreateMarkParamsDict(FPDF_DOCUMENT document, |
| 110 | FPDF_PAGEOBJECTMARK mark) { |
| 111 | CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document); |
| 112 | if (!pDoc) |
| 113 | return nullptr; |
| 114 | |
| 115 | CPDF_ContentMarkItem* pMarkItem = |
| 116 | CPDFContentMarkItemFromFPDFPageObjectMark(mark); |
| 117 | if (!pMarkItem) |
| 118 | return nullptr; |
| 119 | |
| 120 | CPDF_Dictionary* pParams = pMarkItem->GetParam(); |
| 121 | |
| 122 | // If the Params dict does not exist, create a new one. |
| 123 | if (!pParams) { |
| 124 | auto new_dict = pDoc->New<CPDF_Dictionary>(); |
| 125 | pParams = new_dict.Get(); |
| 126 | pMarkItem->SetDirectDict(std::move(new_dict)); |
| 127 | } |
| 128 | |
| 129 | return pParams; |
| 130 | } |
| 131 | |
| 132 | bool PageObjectContainsMark(CPDF_PageObject* pPageObj, |
| 133 | FPDF_PAGEOBJECTMARK mark) { |
| 134 | const CPDF_ContentMarkItem* pMarkItem = |
| 135 | CPDFContentMarkItemFromFPDFPageObjectMark(mark); |
| 136 | return pMarkItem && pPageObj->m_ContentMarks.ContainsItem(pMarkItem); |
| 137 | } |
| 138 | |
| 139 | CPDF_FormObject* CPDFFormObjectFromFPDFPageObject(FPDF_PAGEOBJECT page_object) { |
| 140 | auto* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 141 | return pPageObj ? pPageObj->AsForm() : nullptr; |
| 142 | } |
| 143 | |
| 144 | const CPDF_PageObjectHolder* CPDFPageObjHolderFromFPDFFormObject( |
| 145 | FPDF_PAGEOBJECT page_object) { |
| 146 | CPDF_FormObject* pFormObject = CPDFFormObjectFromFPDFPageObject(page_object); |
| 147 | return pFormObject ? pFormObject->form() : nullptr; |
| 148 | } |
| 149 | |
| 150 | } // namespace |
| 151 | |
| 152 | FPDF_EXPORT FPDF_DOCUMENT FPDF_CALLCONV FPDF_CreateNewDocument() { |
| 153 | auto pDoc = pdfium::MakeUnique<CPDF_Document>( |
| 154 | pdfium::MakeUnique<CPDF_DocRenderData>(), |
| 155 | pdfium::MakeUnique<CPDF_DocPageData>()); |
| 156 | pDoc->CreateNewDoc(); |
| 157 | |
| 158 | time_t currentTime; |
| 159 | ByteString DateStr; |
| 160 | if (IsPDFSandboxPolicyEnabled(FPDF_POLICY_MACHINETIME_ACCESS)) { |
| 161 | if (FXSYS_time(¤tTime) != -1) { |
| 162 | tm* pTM = FXSYS_localtime(¤tTime); |
| 163 | if (pTM) { |
| 164 | DateStr = ByteString::Format( |
| 165 | "D:%04d%02d%02d%02d%02d%02d", pTM->tm_year + 1900, pTM->tm_mon + 1, |
| 166 | pTM->tm_mday, pTM->tm_hour, pTM->tm_min, pTM->tm_sec); |
| 167 | } |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | CPDF_Dictionary* pInfoDict = pDoc->GetInfo(); |
| 172 | if (pInfoDict) { |
| 173 | if (IsPDFSandboxPolicyEnabled(FPDF_POLICY_MACHINETIME_ACCESS)) |
| 174 | pInfoDict->SetNewFor<CPDF_String>("CreationDate", DateStr, false); |
| 175 | pInfoDict->SetNewFor<CPDF_String>("Creator", L"PDFium"); |
| 176 | } |
| 177 | |
| 178 | #ifdef PDF_ENABLE_XFA |
| 179 | pDoc->SetExtension(pdfium::MakeUnique<CPDFXFA_Context>(pDoc.get())); |
| 180 | #endif // PDF_ENABLE_XFA |
| 181 | |
| 182 | // Caller takes ownership of pDoc. |
| 183 | return FPDFDocumentFromCPDFDocument(pDoc.release()); |
| 184 | } |
| 185 | |
| 186 | FPDF_EXPORT void FPDF_CALLCONV FPDFPage_Delete(FPDF_DOCUMENT document, |
| 187 | int page_index) { |
| 188 | auto* pDoc = CPDFDocumentFromFPDFDocument(document); |
| 189 | if (!pDoc) |
| 190 | return; |
| 191 | |
| 192 | CPDF_Document::Extension* pExtension = pDoc->GetExtension(); |
| 193 | if (pExtension) { |
| 194 | pExtension->DeletePage(page_index); |
| 195 | return; |
| 196 | } |
| 197 | |
| 198 | pDoc->DeletePage(page_index); |
| 199 | } |
| 200 | |
| 201 | FPDF_EXPORT FPDF_PAGE FPDF_CALLCONV FPDFPage_New(FPDF_DOCUMENT document, |
| 202 | int page_index, |
| 203 | double width, |
| 204 | double height) { |
| 205 | CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document); |
| 206 | if (!pDoc) |
| 207 | return nullptr; |
| 208 | |
| 209 | page_index = pdfium::clamp(page_index, 0, pDoc->GetPageCount()); |
| 210 | CPDF_Dictionary* pPageDict = pDoc->CreateNewPage(page_index); |
| 211 | if (!pPageDict) |
| 212 | return nullptr; |
| 213 | |
| 214 | pPageDict->SetRectFor(pdfium::page_object::kMediaBox, |
| 215 | CFX_FloatRect(0, 0, width, height)); |
| 216 | pPageDict->SetNewFor<CPDF_Number>(pdfium::page_object::kRotate, 0); |
| 217 | pPageDict->SetNewFor<CPDF_Dictionary>(pdfium::page_object::kResources); |
| 218 | |
| 219 | #ifdef PDF_ENABLE_XFA |
| 220 | if (pDoc->GetExtension()) { |
| 221 | auto pXFAPage = pdfium::MakeRetain<CPDFXFA_Page>(pDoc, page_index); |
| 222 | pXFAPage->LoadPDFPageFromDict(pPageDict); |
| 223 | return FPDFPageFromIPDFPage(pXFAPage.Leak()); // Caller takes ownership. |
| 224 | } |
| 225 | #endif // PDF_ENABLE_XFA |
| 226 | |
| 227 | auto pPage = pdfium::MakeRetain<CPDF_Page>(pDoc, pPageDict); |
| 228 | pPage->SetRenderCache(pdfium::MakeUnique<CPDF_PageRenderCache>(pPage.Get())); |
| 229 | pPage->ParseContent(); |
| 230 | |
| 231 | return FPDFPageFromIPDFPage(pPage.Leak()); // Caller takes ownership. |
| 232 | } |
| 233 | |
| 234 | FPDF_EXPORT int FPDF_CALLCONV FPDFPage_GetRotation(FPDF_PAGE page) { |
| 235 | CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| 236 | return IsPageObject(pPage) ? pPage->GetPageRotation() : -1; |
| 237 | } |
| 238 | |
| 239 | FPDF_EXPORT void FPDF_CALLCONV FPDFPage_InsertObject(FPDF_PAGE page, |
| 240 | FPDF_PAGEOBJECT page_obj) { |
| 241 | CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_obj); |
| 242 | if (!pPageObj) |
| 243 | return; |
| 244 | |
| 245 | std::unique_ptr<CPDF_PageObject> pPageObjHolder(pPageObj); |
| 246 | CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| 247 | if (!IsPageObject(pPage)) |
| 248 | return; |
| 249 | |
| 250 | pPageObj->SetDirty(true); |
| 251 | pPage->AppendPageObject(std::move(pPageObjHolder)); |
| 252 | CalcBoundingBox(pPageObj); |
| 253 | } |
| 254 | |
| 255 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 256 | FPDFPage_RemoveObject(FPDF_PAGE page, FPDF_PAGEOBJECT page_obj) { |
| 257 | CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_obj); |
| 258 | if (!pPageObj) |
| 259 | return false; |
| 260 | |
| 261 | CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| 262 | if (!IsPageObject(pPage)) |
| 263 | return false; |
| 264 | |
| 265 | return pPage->RemovePageObject(pPageObj); |
| 266 | } |
| 267 | |
| 268 | FPDF_EXPORT int FPDF_CALLCONV FPDFPage_CountObjects(FPDF_PAGE page) { |
| 269 | CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| 270 | if (!IsPageObject(pPage)) |
| 271 | return -1; |
| 272 | |
| 273 | return pPage->GetPageObjectCount(); |
| 274 | } |
| 275 | |
| 276 | FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV FPDFPage_GetObject(FPDF_PAGE page, |
| 277 | int index) { |
| 278 | CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| 279 | if (!IsPageObject(pPage)) |
| 280 | return nullptr; |
| 281 | |
| 282 | return FPDFPageObjectFromCPDFPageObject(pPage->GetPageObjectByIndex(index)); |
| 283 | } |
| 284 | |
| 285 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPage_HasTransparency(FPDF_PAGE page) { |
| 286 | CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| 287 | return pPage && pPage->BackgroundAlphaNeeded(); |
| 288 | } |
| 289 | |
| 290 | FPDF_EXPORT void FPDF_CALLCONV FPDFPageObj_Destroy(FPDF_PAGEOBJECT page_obj) { |
| 291 | delete CPDFPageObjectFromFPDFPageObject(page_obj); |
| 292 | } |
| 293 | |
| 294 | FPDF_EXPORT int FPDF_CALLCONV |
| 295 | FPDFPageObj_CountMarks(FPDF_PAGEOBJECT page_object) { |
| 296 | CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 297 | if (!pPageObj) |
| 298 | return -1; |
| 299 | |
| 300 | return pPageObj->m_ContentMarks.CountItems(); |
| 301 | } |
| 302 | |
| 303 | FPDF_EXPORT FPDF_PAGEOBJECTMARK FPDF_CALLCONV |
| 304 | FPDFPageObj_GetMark(FPDF_PAGEOBJECT page_object, unsigned long index) { |
| 305 | CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 306 | if (!pPageObj) |
| 307 | return nullptr; |
| 308 | |
| 309 | auto& mark = pPageObj->m_ContentMarks; |
| 310 | if (index >= mark.CountItems()) |
| 311 | return nullptr; |
| 312 | |
| 313 | return FPDFPageObjectMarkFromCPDFContentMarkItem(mark.GetItem(index)); |
| 314 | } |
| 315 | |
| 316 | FPDF_EXPORT FPDF_PAGEOBJECTMARK FPDF_CALLCONV |
| 317 | FPDFPageObj_AddMark(FPDF_PAGEOBJECT page_object, FPDF_BYTESTRING name) { |
| 318 | CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 319 | if (!pPageObj) |
| 320 | return nullptr; |
| 321 | |
| 322 | auto& mark = pPageObj->m_ContentMarks; |
| 323 | mark.AddMark(name); |
| 324 | unsigned long index = mark.CountItems() - 1; |
| 325 | pPageObj->SetDirty(true); |
| 326 | return FPDFPageObjectMarkFromCPDFContentMarkItem(mark.GetItem(index)); |
| 327 | } |
| 328 | |
| 329 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 330 | FPDFPageObj_RemoveMark(FPDF_PAGEOBJECT page_object, FPDF_PAGEOBJECTMARK mark) { |
| 331 | CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 332 | CPDF_ContentMarkItem* pMarkItem = |
| 333 | CPDFContentMarkItemFromFPDFPageObjectMark(mark); |
| 334 | if (!pPageObj || !pMarkItem) |
| 335 | return false; |
| 336 | |
| 337 | bool result = pPageObj->m_ContentMarks.RemoveMark(pMarkItem); |
| 338 | if (result) |
| 339 | pPageObj->SetDirty(true); |
| 340 | |
| 341 | return result; |
| 342 | } |
| 343 | |
| 344 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 345 | FPDFPageObjMark_GetName(FPDF_PAGEOBJECTMARK mark, |
| 346 | void* buffer, |
| 347 | unsigned long buflen, |
| 348 | unsigned long* out_buflen) { |
| 349 | if (!mark || !out_buflen) |
| 350 | return false; |
| 351 | |
| 352 | const CPDF_ContentMarkItem* pMarkItem = |
| 353 | CPDFContentMarkItemFromFPDFPageObjectMark(mark); |
| 354 | |
| 355 | *out_buflen = Utf16EncodeMaybeCopyAndReturnLength( |
| 356 | WideString::FromUTF8(pMarkItem->GetName().AsStringView()), buffer, |
| 357 | buflen); |
| 358 | return true; |
| 359 | } |
| 360 | |
| 361 | FPDF_EXPORT int FPDF_CALLCONV |
| 362 | FPDFPageObjMark_CountParams(FPDF_PAGEOBJECTMARK mark) { |
| 363 | if (!mark) |
| 364 | return -1; |
| 365 | |
| 366 | const CPDF_ContentMarkItem* pMarkItem = |
| 367 | CPDFContentMarkItemFromFPDFPageObjectMark(mark); |
| 368 | |
| 369 | const CPDF_Dictionary* pParams = pMarkItem->GetParam(); |
| 370 | return pParams ? pParams->size() : 0; |
| 371 | } |
| 372 | |
| 373 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 374 | FPDFPageObjMark_GetParamKey(FPDF_PAGEOBJECTMARK mark, |
| 375 | unsigned long index, |
| 376 | void* buffer, |
| 377 | unsigned long buflen, |
| 378 | unsigned long* out_buflen) { |
| 379 | if (!out_buflen) |
| 380 | return false; |
| 381 | |
| 382 | const CPDF_Dictionary* pParams = GetMarkParamDict(mark); |
| 383 | if (!pParams) |
| 384 | return false; |
| 385 | |
| 386 | CPDF_DictionaryLocker locker(pParams); |
| 387 | for (auto& it : locker) { |
| 388 | if (index == 0) { |
| 389 | *out_buflen = Utf16EncodeMaybeCopyAndReturnLength( |
| 390 | WideString::FromUTF8(it.first.AsStringView()), buffer, buflen); |
| 391 | return true; |
| 392 | } |
| 393 | --index; |
| 394 | } |
| 395 | |
| 396 | return false; |
| 397 | } |
| 398 | |
| 399 | FPDF_EXPORT FPDF_OBJECT_TYPE FPDF_CALLCONV |
| 400 | FPDFPageObjMark_GetParamValueType(FPDF_PAGEOBJECTMARK mark, |
| 401 | FPDF_BYTESTRING key) { |
| 402 | const CPDF_Dictionary* pParams = GetMarkParamDict(mark); |
| 403 | if (!pParams) |
| 404 | return FPDF_OBJECT_UNKNOWN; |
| 405 | |
| 406 | const CPDF_Object* pObject = pParams->GetObjectFor(key); |
| 407 | return pObject ? pObject->GetType() : FPDF_OBJECT_UNKNOWN; |
| 408 | } |
| 409 | |
| 410 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 411 | FPDFPageObjMark_GetParamIntValue(FPDF_PAGEOBJECTMARK mark, |
| 412 | FPDF_BYTESTRING key, |
| 413 | int* out_value) { |
| 414 | if (!out_value) |
| 415 | return false; |
| 416 | |
| 417 | const CPDF_Dictionary* pParams = GetMarkParamDict(mark); |
| 418 | if (!pParams) |
| 419 | return false; |
| 420 | |
| 421 | const CPDF_Object* pObj = pParams->GetObjectFor(key); |
| 422 | if (!pObj || !pObj->IsNumber()) |
| 423 | return false; |
| 424 | |
| 425 | *out_value = pObj->GetInteger(); |
| 426 | return true; |
| 427 | } |
| 428 | |
| 429 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 430 | FPDFPageObjMark_GetParamStringValue(FPDF_PAGEOBJECTMARK mark, |
| 431 | FPDF_BYTESTRING key, |
| 432 | void* buffer, |
| 433 | unsigned long buflen, |
| 434 | unsigned long* out_buflen) { |
| 435 | if (!out_buflen) |
| 436 | return false; |
| 437 | |
| 438 | const CPDF_Dictionary* pParams = GetMarkParamDict(mark); |
| 439 | if (!pParams) |
| 440 | return false; |
| 441 | |
| 442 | const CPDF_Object* pObj = pParams->GetObjectFor(key); |
| 443 | if (!pObj || !pObj->IsString()) |
| 444 | return false; |
| 445 | |
| 446 | *out_buflen = Utf16EncodeMaybeCopyAndReturnLength( |
| 447 | WideString::FromUTF8(pObj->GetString().AsStringView()), buffer, buflen); |
| 448 | return true; |
| 449 | } |
| 450 | |
| 451 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 452 | FPDFPageObjMark_GetParamBlobValue(FPDF_PAGEOBJECTMARK mark, |
| 453 | FPDF_BYTESTRING key, |
| 454 | void* buffer, |
| 455 | unsigned long buflen, |
| 456 | unsigned long* out_buflen) { |
| 457 | if (!out_buflen) |
| 458 | return false; |
| 459 | |
| 460 | const CPDF_Dictionary* pParams = GetMarkParamDict(mark); |
| 461 | if (!pParams) |
| 462 | return false; |
| 463 | |
| 464 | const CPDF_Object* pObj = pParams->GetObjectFor(key); |
| 465 | if (!pObj || !pObj->IsString()) |
| 466 | return false; |
| 467 | |
| 468 | ByteString result = pObj->GetString(); |
| 469 | unsigned long len = result.GetLength(); |
| 470 | |
| 471 | if (buffer && len <= buflen) |
| 472 | memcpy(buffer, result.c_str(), len); |
| 473 | |
| 474 | *out_buflen = len; |
| 475 | return true; |
| 476 | } |
| 477 | |
| 478 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 479 | FPDFPageObj_HasTransparency(FPDF_PAGEOBJECT page_object) { |
| 480 | CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 481 | if (!pPageObj) |
| 482 | return false; |
| 483 | |
| 484 | if (pPageObj->m_GeneralState.GetBlendType() != BlendMode::kNormal) |
| 485 | return true; |
| 486 | |
| 487 | const CPDF_Dictionary* pSMaskDict = |
| 488 | ToDictionary(pPageObj->m_GeneralState.GetSoftMask()); |
| 489 | if (pSMaskDict) |
| 490 | return true; |
| 491 | |
| 492 | if (pPageObj->m_GeneralState.GetFillAlpha() != 1.0f) |
| 493 | return true; |
| 494 | |
| 495 | if (pPageObj->IsPath() && pPageObj->m_GeneralState.GetStrokeAlpha() != 1.0f) |
| 496 | return true; |
| 497 | |
| 498 | if (!pPageObj->IsForm()) |
| 499 | return false; |
| 500 | |
| 501 | const CPDF_Form* pForm = pPageObj->AsForm()->form(); |
| 502 | if (!pForm) |
| 503 | return false; |
| 504 | |
| 505 | const CPDF_Transparency& trans = pForm->GetTransparency(); |
| 506 | return trans.IsGroup() || trans.IsIsolated(); |
| 507 | } |
| 508 | |
| 509 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 510 | FPDFPageObjMark_SetIntParam(FPDF_DOCUMENT document, |
| 511 | FPDF_PAGEOBJECT page_object, |
| 512 | FPDF_PAGEOBJECTMARK mark, |
| 513 | FPDF_BYTESTRING key, |
| 514 | int value) { |
| 515 | CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 516 | if (!pPageObj || !PageObjectContainsMark(pPageObj, mark)) |
| 517 | return false; |
| 518 | |
| 519 | CPDF_Dictionary* pParams = GetOrCreateMarkParamsDict(document, mark); |
| 520 | if (!pParams) |
| 521 | return false; |
| 522 | |
| 523 | pParams->SetNewFor<CPDF_Number>(key, value); |
| 524 | pPageObj->SetDirty(true); |
| 525 | return true; |
| 526 | } |
| 527 | |
| 528 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 529 | FPDFPageObjMark_SetStringParam(FPDF_DOCUMENT document, |
| 530 | FPDF_PAGEOBJECT page_object, |
| 531 | FPDF_PAGEOBJECTMARK mark, |
| 532 | FPDF_BYTESTRING key, |
| 533 | FPDF_BYTESTRING value) { |
| 534 | CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 535 | if (!pPageObj || !PageObjectContainsMark(pPageObj, mark)) |
| 536 | return false; |
| 537 | |
| 538 | CPDF_Dictionary* pParams = GetOrCreateMarkParamsDict(document, mark); |
| 539 | if (!pParams) |
| 540 | return false; |
| 541 | |
| 542 | pParams->SetNewFor<CPDF_String>(key, value, false); |
| 543 | pPageObj->SetDirty(true); |
| 544 | return true; |
| 545 | } |
| 546 | |
| 547 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 548 | FPDFPageObjMark_SetBlobParam(FPDF_DOCUMENT document, |
| 549 | FPDF_PAGEOBJECT page_object, |
| 550 | FPDF_PAGEOBJECTMARK mark, |
| 551 | FPDF_BYTESTRING key, |
| 552 | void* value, |
| 553 | unsigned long value_len) { |
| 554 | CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 555 | if (!pPageObj || !PageObjectContainsMark(pPageObj, mark)) |
| 556 | return false; |
| 557 | |
| 558 | CPDF_Dictionary* pParams = GetOrCreateMarkParamsDict(document, mark); |
| 559 | if (!pParams) |
| 560 | return false; |
| 561 | |
| 562 | if (!value && value_len > 0) |
| 563 | return false; |
| 564 | |
| 565 | pParams->SetNewFor<CPDF_String>( |
| 566 | key, ByteString(static_cast<const char*>(value), value_len), true); |
| 567 | pPageObj->SetDirty(true); |
| 568 | return true; |
| 569 | } |
| 570 | |
| 571 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 572 | FPDFPageObjMark_RemoveParam(FPDF_PAGEOBJECT page_object, |
| 573 | FPDF_PAGEOBJECTMARK mark, |
| 574 | FPDF_BYTESTRING key) { |
| 575 | CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 576 | if (!pPageObj) |
| 577 | return false; |
| 578 | |
| 579 | CPDF_Dictionary* pParams = GetMarkParamDict(mark); |
| 580 | if (!pParams) |
| 581 | return false; |
| 582 | |
| 583 | auto removed = pParams->RemoveFor(key); |
| 584 | if (!removed) |
| 585 | return false; |
| 586 | |
| 587 | pPageObj->SetDirty(true); |
| 588 | return true; |
| 589 | } |
| 590 | |
| 591 | FPDF_EXPORT int FPDF_CALLCONV FPDFPageObj_GetType(FPDF_PAGEOBJECT page_object) { |
| 592 | CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 593 | return pPageObj ? pPageObj->GetType() : FPDF_PAGEOBJ_UNKNOWN; |
| 594 | } |
| 595 | |
| 596 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPage_GenerateContent(FPDF_PAGE page) { |
| 597 | CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| 598 | if (!IsPageObject(pPage)) |
| 599 | return false; |
| 600 | |
| 601 | CPDF_PageContentGenerator CG(pPage); |
| 602 | CG.GenerateContent(); |
| 603 | return true; |
| 604 | } |
| 605 | |
| 606 | FPDF_EXPORT void FPDF_CALLCONV |
| 607 | FPDFPageObj_Transform(FPDF_PAGEOBJECT page_object, |
| 608 | double a, |
| 609 | double b, |
| 610 | double c, |
| 611 | double d, |
| 612 | double e, |
| 613 | double f) { |
| 614 | CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 615 | if (!pPageObj) |
| 616 | return; |
| 617 | |
| 618 | CFX_Matrix matrix((float)a, (float)b, (float)c, (float)d, (float)e, (float)f); |
| 619 | pPageObj->Transform(matrix); |
| 620 | } |
| 621 | |
| 622 | FPDF_EXPORT void FPDF_CALLCONV |
| 623 | FPDFPageObj_SetBlendMode(FPDF_PAGEOBJECT page_object, |
| 624 | FPDF_BYTESTRING blend_mode) { |
| 625 | CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 626 | if (!pPageObj) |
| 627 | return; |
| 628 | |
| 629 | pPageObj->m_GeneralState.SetBlendMode(blend_mode); |
| 630 | pPageObj->SetDirty(true); |
| 631 | } |
| 632 | |
| 633 | FPDF_EXPORT void FPDF_CALLCONV FPDFPage_TransformAnnots(FPDF_PAGE page, |
| 634 | double a, |
| 635 | double b, |
| 636 | double c, |
| 637 | double d, |
| 638 | double e, |
| 639 | double f) { |
| 640 | CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| 641 | if (!pPage) |
| 642 | return; |
| 643 | |
| 644 | CPDF_AnnotList AnnotList(pPage); |
| 645 | for (size_t i = 0; i < AnnotList.Count(); ++i) { |
| 646 | CPDF_Annot* pAnnot = AnnotList.GetAt(i); |
| 647 | CFX_Matrix matrix((float)a, (float)b, (float)c, (float)d, (float)e, |
| 648 | (float)f); |
| 649 | CFX_FloatRect rect = matrix.TransformRect(pAnnot->GetRect()); |
| 650 | |
| 651 | CPDF_Dictionary* pAnnotDict = pAnnot->GetAnnotDict(); |
| 652 | CPDF_Array* pRectArray = pAnnotDict->GetArrayFor("Rect"); |
| 653 | if (pRectArray) |
| 654 | pRectArray->Clear(); |
| 655 | else |
| 656 | pRectArray = pAnnotDict->SetNewFor<CPDF_Array>("Rect"); |
| 657 | |
| 658 | pRectArray->AddNew<CPDF_Number>(rect.left); |
| 659 | pRectArray->AddNew<CPDF_Number>(rect.bottom); |
| 660 | pRectArray->AddNew<CPDF_Number>(rect.right); |
| 661 | pRectArray->AddNew<CPDF_Number>(rect.top); |
| 662 | |
| 663 | // TODO(unknown): Transform AP's rectangle |
| 664 | } |
| 665 | } |
| 666 | |
| 667 | FPDF_EXPORT void FPDF_CALLCONV FPDFPage_SetRotation(FPDF_PAGE page, |
| 668 | int rotate) { |
| 669 | CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| 670 | if (!IsPageObject(pPage)) |
| 671 | return; |
| 672 | |
| 673 | rotate %= 4; |
| 674 | pPage->GetDict()->SetNewFor<CPDF_Number>(pdfium::page_object::kRotate, |
| 675 | rotate * 90); |
| 676 | pPage->UpdateDimensions(); |
| 677 | } |
| 678 | |
| 679 | FPDF_BOOL FPDFPageObj_SetFillColor(FPDF_PAGEOBJECT page_object, |
| 680 | unsigned int R, |
| 681 | unsigned int G, |
| 682 | unsigned int B, |
| 683 | unsigned int A) { |
| 684 | CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 685 | if (!pPageObj || R > 255 || G > 255 || B > 255 || A > 255) |
| 686 | return false; |
| 687 | |
| 688 | std::vector<float> rgb = {R / 255.f, G / 255.f, B / 255.f}; |
| 689 | pPageObj->m_GeneralState.SetFillAlpha(A / 255.f); |
| 690 | pPageObj->m_ColorState.SetFillColor( |
| 691 | CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB), rgb); |
| 692 | pPageObj->SetDirty(true); |
| 693 | return true; |
| 694 | } |
| 695 | |
| 696 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 697 | FPDFPageObj_GetFillColor(FPDF_PAGEOBJECT page_object, |
| 698 | unsigned int* R, |
| 699 | unsigned int* G, |
| 700 | unsigned int* B, |
| 701 | unsigned int* A) { |
| 702 | auto* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 703 | if (!pPageObj || !R || !G || !B || !A) |
| 704 | return false; |
| 705 | |
| 706 | if (!pPageObj->m_ColorState.HasRef()) |
| 707 | return false; |
| 708 | |
| 709 | FX_COLORREF fill_color = pPageObj->m_ColorState.GetFillColorRef(); |
| 710 | *R = FXSYS_GetRValue(fill_color); |
| 711 | *G = FXSYS_GetGValue(fill_color); |
| 712 | *B = FXSYS_GetBValue(fill_color); |
| 713 | *A = FXSYS_GetUnsignedAlpha(pPageObj->m_GeneralState.GetFillAlpha()); |
| 714 | return true; |
| 715 | } |
| 716 | |
| 717 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 718 | FPDFPageObj_GetBounds(FPDF_PAGEOBJECT page_object, |
| 719 | float* left, |
| 720 | float* bottom, |
| 721 | float* right, |
| 722 | float* top) { |
| 723 | CPDF_PageObject* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 724 | if (!pPageObj) |
| 725 | return false; |
| 726 | |
| 727 | const CFX_FloatRect& bbox = pPageObj->GetRect(); |
| 728 | *left = bbox.left; |
| 729 | *bottom = bbox.bottom; |
| 730 | *right = bbox.right; |
| 731 | *top = bbox.top; |
| 732 | return true; |
| 733 | } |
| 734 | |
| 735 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 736 | FPDFPageObj_SetStrokeColor(FPDF_PAGEOBJECT page_object, |
| 737 | unsigned int R, |
| 738 | unsigned int G, |
| 739 | unsigned int B, |
| 740 | unsigned int A) { |
| 741 | auto* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 742 | if (!pPageObj || R > 255 || G > 255 || B > 255 || A > 255) |
| 743 | return false; |
| 744 | |
| 745 | std::vector<float> rgb = {R / 255.f, G / 255.f, B / 255.f}; |
| 746 | pPageObj->m_GeneralState.SetStrokeAlpha(A / 255.f); |
| 747 | pPageObj->m_ColorState.SetStrokeColor( |
| 748 | CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB), rgb); |
| 749 | pPageObj->SetDirty(true); |
| 750 | return true; |
| 751 | } |
| 752 | |
| 753 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 754 | FPDFPageObj_GetStrokeColor(FPDF_PAGEOBJECT page_object, |
| 755 | unsigned int* R, |
| 756 | unsigned int* G, |
| 757 | unsigned int* B, |
| 758 | unsigned int* A) { |
| 759 | auto* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 760 | if (!pPageObj || !R || !G || !B || !A) |
| 761 | return false; |
| 762 | |
| 763 | if (!pPageObj->m_ColorState.HasRef()) |
| 764 | return false; |
| 765 | |
| 766 | FX_COLORREF stroke_color = pPageObj->m_ColorState.GetStrokeColorRef(); |
| 767 | *R = FXSYS_GetRValue(stroke_color); |
| 768 | *G = FXSYS_GetGValue(stroke_color); |
| 769 | *B = FXSYS_GetBValue(stroke_color); |
| 770 | *A = FXSYS_GetUnsignedAlpha(pPageObj->m_GeneralState.GetStrokeAlpha()); |
| 771 | return true; |
| 772 | } |
| 773 | |
| 774 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 775 | FPDFPageObj_SetStrokeWidth(FPDF_PAGEOBJECT page_object, float width) { |
| 776 | auto* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 777 | if (!pPageObj || width < 0.0f) |
| 778 | return false; |
| 779 | |
| 780 | pPageObj->m_GraphState.SetLineWidth(width); |
| 781 | pPageObj->SetDirty(true); |
| 782 | return true; |
| 783 | } |
| 784 | |
| 785 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 786 | FPDFPageObj_GetStrokeWidth(FPDF_PAGEOBJECT page_object, float* width) { |
| 787 | auto* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 788 | if (!pPageObj || !width) |
| 789 | return false; |
| 790 | |
| 791 | *width = pPageObj->m_GraphState.GetLineWidth(); |
| 792 | return true; |
| 793 | } |
| 794 | |
| 795 | FPDF_EXPORT int FPDF_CALLCONV |
| 796 | FPDFPageObj_GetLineJoin(FPDF_PAGEOBJECT page_object) { |
| 797 | auto* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 798 | return pPageObj ? pPageObj->m_GraphState.GetLineJoin() : -1; |
| 799 | } |
| 800 | |
| 801 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 802 | FPDFPageObj_SetLineJoin(FPDF_PAGEOBJECT page_object, int line_join) { |
| 803 | auto* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 804 | if (!pPageObj) |
| 805 | return false; |
| 806 | |
| 807 | constexpr int kLineJoinMiter = |
| 808 | static_cast<int>(CFX_GraphStateData::LineJoin::LineJoinMiter); |
| 809 | constexpr int kLineJoinBevel = |
| 810 | static_cast<int>(CFX_GraphStateData::LineJoin::LineJoinBevel); |
| 811 | if (line_join < kLineJoinMiter || line_join > kLineJoinBevel) |
| 812 | return false; |
| 813 | |
| 814 | pPageObj->m_GraphState.SetLineJoin( |
| 815 | static_cast<CFX_GraphStateData::LineJoin>(line_join)); |
| 816 | pPageObj->SetDirty(true); |
| 817 | return true; |
| 818 | } |
| 819 | |
| 820 | FPDF_EXPORT int FPDF_CALLCONV |
| 821 | FPDFPageObj_GetLineCap(FPDF_PAGEOBJECT page_object) { |
| 822 | auto* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 823 | return pPageObj ? pPageObj->m_GraphState.GetLineCap() : -1; |
| 824 | } |
| 825 | |
| 826 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 827 | FPDFPageObj_SetLineCap(FPDF_PAGEOBJECT page_object, int line_cap) { |
| 828 | auto* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object); |
| 829 | if (!pPageObj) |
| 830 | return false; |
| 831 | |
| 832 | constexpr int kLineCapButt = |
| 833 | static_cast<int>(CFX_GraphStateData::LineCap::LineCapButt); |
| 834 | constexpr int kLineCapSquare = |
| 835 | static_cast<int>(CFX_GraphStateData::LineCap::LineCapSquare); |
| 836 | if (line_cap < kLineCapButt || line_cap > kLineCapSquare) |
| 837 | return false; |
| 838 | |
| 839 | pPageObj->m_GraphState.SetLineCap( |
| 840 | static_cast<CFX_GraphStateData::LineCap>(line_cap)); |
| 841 | pPageObj->SetDirty(true); |
| 842 | return true; |
| 843 | } |
| 844 | |
| 845 | FPDF_EXPORT int FPDF_CALLCONV |
| 846 | FPDFFormObj_CountObjects(FPDF_PAGEOBJECT form_object) { |
| 847 | const auto* pObjectList = CPDFPageObjHolderFromFPDFFormObject(form_object); |
| 848 | return pObjectList ? pObjectList->GetPageObjectCount() : -1; |
| 849 | } |
| 850 | |
| 851 | FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV |
| 852 | FPDFFormObj_GetObject(FPDF_PAGEOBJECT form_object, unsigned long index) { |
| 853 | const auto* pObjectList = CPDFPageObjHolderFromFPDFFormObject(form_object); |
| 854 | if (!pObjectList) |
| 855 | return nullptr; |
| 856 | |
| 857 | return FPDFPageObjectFromCPDFPageObject( |
| 858 | pObjectList->GetPageObjectByIndex(index)); |
| 859 | } |
| 860 | |
| 861 | FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV |
| 862 | FPDFFormObj_GetMatrix(FPDF_PAGEOBJECT form_object, FS_MATRIX* matrix) { |
| 863 | CPDF_FormObject* pFormObj = CPDFFormObjectFromFPDFPageObject(form_object); |
| 864 | if (!pFormObj || !matrix) |
| 865 | return false; |
| 866 | |
| 867 | *matrix = FSMatrixFromCFXMatrix(pFormObj->form_matrix()); |
| 868 | return true; |
| 869 | } |