| // 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_edit.h" |
| |
| #include <algorithm> |
| #include <memory> |
| #include <utility> |
| |
| #include "core/fpdfapi/edit/cpdf_pagecontentgenerator.h" |
| #include "core/fpdfapi/page/cpdf_form.h" |
| #include "core/fpdfapi/page/cpdf_formobject.h" |
| #include "core/fpdfapi/page/cpdf_imageobject.h" |
| #include "core/fpdfapi/page/cpdf_page.h" |
| #include "core/fpdfapi/page/cpdf_pageobject.h" |
| #include "core/fpdfapi/page/cpdf_pathobject.h" |
| #include "core/fpdfapi/page/cpdf_shadingobject.h" |
| #include "core/fpdfapi/parser/cpdf_array.h" |
| #include "core/fpdfapi/parser/cpdf_document.h" |
| #include "core/fpdfapi/parser/cpdf_number.h" |
| #include "core/fpdfapi/parser/cpdf_string.h" |
| #include "core/fpdfdoc/cpdf_annot.h" |
| #include "core/fpdfdoc/cpdf_annotlist.h" |
| #include "fpdfsdk/fsdk_define.h" |
| #include "public/fpdf_formfill.h" |
| #include "third_party/base/stl_util.h" |
| |
| #ifdef PDF_ENABLE_XFA |
| #include "fpdfsdk/fpdfxfa/cpdfxfa_context.h" |
| #include "fpdfsdk/fpdfxfa/cpdfxfa_page.h" |
| #endif // PDF_ENABLE_XFA |
| |
| #if _FX_OS_ == _FX_ANDROID_ |
| #include <time.h> |
| #else |
| #include <ctime> |
| #endif |
| |
| namespace { |
| |
| static_assert(FPDF_PAGEOBJ_TEXT == CPDF_PageObject::TEXT, |
| "FPDF_PAGEOBJ_TEXT/CPDF_PageObject::TEXT mismatch"); |
| static_assert(FPDF_PAGEOBJ_PATH == CPDF_PageObject::PATH, |
| "FPDF_PAGEOBJ_PATH/CPDF_PageObject::PATH mismatch"); |
| static_assert(FPDF_PAGEOBJ_IMAGE == CPDF_PageObject::IMAGE, |
| "FPDF_PAGEOBJ_IMAGE/CPDF_PageObject::IMAGE mismatch"); |
| static_assert(FPDF_PAGEOBJ_SHADING == CPDF_PageObject::SHADING, |
| "FPDF_PAGEOBJ_SHADING/CPDF_PageObject::SHADING mismatch"); |
| static_assert(FPDF_PAGEOBJ_FORM == CPDF_PageObject::FORM, |
| "FPDF_PAGEOBJ_FORM/CPDF_PageObject::FORM mismatch"); |
| |
| bool IsPageObject(CPDF_Page* pPage) { |
| if (!pPage || !pPage->m_pFormDict || !pPage->m_pFormDict->KeyExist("Type")) |
| return false; |
| |
| CPDF_Object* pObject = pPage->m_pFormDict->GetObjectFor("Type")->GetDirect(); |
| return pObject && !pObject->GetString().Compare("Page"); |
| } |
| |
| } // namespace |
| |
| DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_CreateNewDocument() { |
| CPDF_Document* pDoc = new CPDF_Document(nullptr); |
| pDoc->CreateNewDoc(); |
| time_t currentTime; |
| |
| CFX_ByteString DateStr; |
| |
| if (FSDK_IsSandBoxPolicyEnabled(FPDF_POLICY_MACHINETIME_ACCESS)) { |
| if (-1 != time(¤tTime)) { |
| tm* pTM = localtime(¤tTime); |
| if (pTM) { |
| DateStr.Format("D:%04d%02d%02d%02d%02d%02d", pTM->tm_year + 1900, |
| pTM->tm_mon + 1, pTM->tm_mday, pTM->tm_hour, pTM->tm_min, |
| pTM->tm_sec); |
| } |
| } |
| } |
| |
| CPDF_Dictionary* pInfoDict = nullptr; |
| pInfoDict = pDoc->GetInfo(); |
| if (pInfoDict) { |
| if (FSDK_IsSandBoxPolicyEnabled(FPDF_POLICY_MACHINETIME_ACCESS)) |
| pInfoDict->SetNewFor<CPDF_String>("CreationDate", DateStr, false); |
| pInfoDict->SetNewFor<CPDF_String>("Creator", L"PDFium"); |
| } |
| |
| return FPDFDocumentFromCPDFDocument(pDoc); |
| } |
| |
| DLLEXPORT void STDCALL FPDFPage_Delete(FPDF_DOCUMENT document, int page_index) { |
| if (UnderlyingDocumentType* pDoc = UnderlyingFromFPDFDocument(document)) |
| pDoc->DeletePage(page_index); |
| } |
| |
| DLLEXPORT FPDF_PAGE STDCALL FPDFPage_New(FPDF_DOCUMENT document, |
| int page_index, |
| double width, |
| double height) { |
| CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document); |
| if (!pDoc) |
| return nullptr; |
| |
| page_index = std::min(std::max(page_index, 0), pDoc->GetPageCount()); |
| CPDF_Dictionary* pPageDict = pDoc->CreateNewPage(page_index); |
| if (!pPageDict) |
| return nullptr; |
| |
| CPDF_Array* pMediaBoxArray = pPageDict->SetNewFor<CPDF_Array>("MediaBox"); |
| pMediaBoxArray->AddNew<CPDF_Number>(0); |
| pMediaBoxArray->AddNew<CPDF_Number>(0); |
| pMediaBoxArray->AddNew<CPDF_Number>(static_cast<FX_FLOAT>(width)); |
| pMediaBoxArray->AddNew<CPDF_Number>(static_cast<FX_FLOAT>(height)); |
| pPageDict->SetNewFor<CPDF_Number>("Rotate", 0); |
| pPageDict->SetNewFor<CPDF_Dictionary>("Resources"); |
| |
| #ifdef PDF_ENABLE_XFA |
| CPDFXFA_Page* pPage = |
| new CPDFXFA_Page(static_cast<CPDFXFA_Context*>(document), page_index); |
| pPage->LoadPDFPage(pPageDict); |
| #else // PDF_ENABLE_XFA |
| CPDF_Page* pPage = new CPDF_Page(pDoc, pPageDict, true); |
| pPage->ParseContent(); |
| #endif // PDF_ENABLE_XFA |
| |
| return pPage; |
| } |
| |
| DLLEXPORT int STDCALL FPDFPage_GetRotation(FPDF_PAGE page) { |
| CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| if (!IsPageObject(pPage)) |
| return -1; |
| |
| CPDF_Dictionary* pDict = pPage->m_pFormDict; |
| while (pDict) { |
| if (pDict->KeyExist("Rotate")) { |
| CPDF_Object* pRotateObj = pDict->GetObjectFor("Rotate")->GetDirect(); |
| return pRotateObj ? pRotateObj->GetInteger() / 90 : 0; |
| } |
| if (!pDict->KeyExist("Parent")) |
| break; |
| |
| pDict = ToDictionary(pDict->GetObjectFor("Parent")->GetDirect()); |
| } |
| |
| return 0; |
| } |
| |
| DLLEXPORT void STDCALL FPDFPage_InsertObject(FPDF_PAGE page, |
| FPDF_PAGEOBJECT page_obj) { |
| CPDF_PageObject* pPageObj = reinterpret_cast<CPDF_PageObject*>(page_obj); |
| if (!pPageObj) |
| return; |
| |
| std::unique_ptr<CPDF_PageObject> pPageObjHolder(pPageObj); |
| CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| if (!IsPageObject(pPage)) |
| return; |
| |
| pPage->GetPageObjectList()->push_back(std::move(pPageObjHolder)); |
| switch (pPageObj->GetType()) { |
| case CPDF_PageObject::TEXT: { |
| break; |
| } |
| case CPDF_PageObject::PATH: { |
| CPDF_PathObject* pPathObj = pPageObj->AsPath(); |
| pPathObj->CalcBoundingBox(); |
| break; |
| } |
| case CPDF_PageObject::IMAGE: { |
| CPDF_ImageObject* pImageObj = pPageObj->AsImage(); |
| pImageObj->CalcBoundingBox(); |
| break; |
| } |
| case CPDF_PageObject::SHADING: { |
| CPDF_ShadingObject* pShadingObj = pPageObj->AsShading(); |
| pShadingObj->CalcBoundingBox(); |
| break; |
| } |
| case CPDF_PageObject::FORM: { |
| CPDF_FormObject* pFormObj = pPageObj->AsForm(); |
| pFormObj->CalcBoundingBox(); |
| break; |
| } |
| default: { |
| ASSERT(false); |
| break; |
| } |
| } |
| } |
| |
| DLLEXPORT int STDCALL FPDFPage_CountObject(FPDF_PAGE page) { |
| CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| if (!IsPageObject(pPage)) |
| return -1; |
| return pdfium::CollectionSize<int>(*pPage->GetPageObjectList()); |
| } |
| |
| DLLEXPORT FPDF_PAGEOBJECT STDCALL FPDFPage_GetObject(FPDF_PAGE page, |
| int index) { |
| CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| if (!IsPageObject(pPage)) |
| return nullptr; |
| return pPage->GetPageObjectList()->GetPageObjectByIndex(index); |
| } |
| |
| DLLEXPORT FPDF_BOOL STDCALL FPDFPage_HasTransparency(FPDF_PAGE page) { |
| CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| return pPage && pPage->BackgroundAlphaNeeded(); |
| } |
| |
| DLLEXPORT FPDF_BOOL STDCALL |
| FPDFPageObj_HasTransparency(FPDF_PAGEOBJECT pageObject) { |
| if (!pageObject) |
| return false; |
| |
| CPDF_PageObject* pPageObj = reinterpret_cast<CPDF_PageObject*>(pageObject); |
| int blend_type = pPageObj->m_GeneralState.GetBlendType(); |
| if (blend_type != FXDIB_BLEND_NORMAL) |
| return true; |
| |
| CPDF_Dictionary* pSMaskDict = |
| ToDictionary(pPageObj->m_GeneralState.GetSoftMask()); |
| if (pSMaskDict) |
| return true; |
| |
| if (pPageObj->m_GeneralState.GetFillAlpha() != 1.0f) |
| return true; |
| |
| if (pPageObj->IsPath() && pPageObj->m_GeneralState.GetStrokeAlpha() != 1.0f) { |
| return true; |
| } |
| |
| if (pPageObj->IsForm()) { |
| const CPDF_Form* pForm = pPageObj->AsForm()->form(); |
| if (pForm) { |
| int trans = pForm->m_Transparency; |
| if ((trans & PDFTRANS_ISOLATED) || (trans & PDFTRANS_GROUP)) |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| DLLEXPORT FPDF_BOOL STDCALL FPDFPage_GenerateContent(FPDF_PAGE page) { |
| CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| if (!IsPageObject(pPage)) |
| return false; |
| |
| CPDF_PageContentGenerator CG(pPage); |
| CG.GenerateContent(); |
| return true; |
| } |
| |
| DLLEXPORT void STDCALL FPDFPageObj_Transform(FPDF_PAGEOBJECT page_object, |
| double a, |
| double b, |
| double c, |
| double d, |
| double e, |
| double f) { |
| CPDF_PageObject* pPageObj = reinterpret_cast<CPDF_PageObject*>(page_object); |
| if (!pPageObj) |
| return; |
| |
| CFX_Matrix matrix((FX_FLOAT)a, (FX_FLOAT)b, (FX_FLOAT)c, (FX_FLOAT)d, |
| (FX_FLOAT)e, (FX_FLOAT)f); |
| pPageObj->Transform(matrix); |
| } |
| |
| DLLEXPORT void STDCALL FPDFPage_TransformAnnots(FPDF_PAGE page, |
| double a, |
| double b, |
| double c, |
| double d, |
| double e, |
| double f) { |
| CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| if (!pPage) |
| return; |
| |
| CPDF_AnnotList AnnotList(pPage); |
| for (size_t i = 0; i < AnnotList.Count(); ++i) { |
| CPDF_Annot* pAnnot = AnnotList.GetAt(i); |
| CFX_FloatRect rect = pAnnot->GetRect(); // transformAnnots Rectangle |
| CFX_Matrix matrix((FX_FLOAT)a, (FX_FLOAT)b, (FX_FLOAT)c, (FX_FLOAT)d, |
| (FX_FLOAT)e, (FX_FLOAT)f); |
| rect.Transform(&matrix); |
| |
| CPDF_Array* pRectArray = pAnnot->GetAnnotDict()->GetArrayFor("Rect"); |
| if (!pRectArray) |
| pRectArray = pAnnot->GetAnnotDict()->SetNewFor<CPDF_Array>("Rect"); |
| |
| pRectArray->SetNewAt<CPDF_Number>(0, rect.left); |
| pRectArray->SetNewAt<CPDF_Number>(1, rect.bottom); |
| pRectArray->SetNewAt<CPDF_Number>(2, rect.right); |
| pRectArray->SetNewAt<CPDF_Number>(3, rect.top); |
| |
| // TODO(unknown): Transform AP's rectangle |
| } |
| } |
| |
| DLLEXPORT void STDCALL FPDFPage_SetRotation(FPDF_PAGE page, int rotate) { |
| CPDF_Page* pPage = CPDFPageFromFPDFPage(page); |
| if (!IsPageObject(pPage)) |
| return; |
| |
| CPDF_Dictionary* pDict = pPage->m_pFormDict; |
| rotate %= 4; |
| pDict->SetNewFor<CPDF_Number>("Rotate", rotate * 90); |
| } |