fpdfsdk/src/fpdfeditpage.cpp

   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 #include "../../public/fpdf_formfill.h"
   9 #include "../include/fsdk_define.h"
  10 #include "../include/fpdfxfa/fpdfxfa_doc.h"
  11 #include "../include/fpdfxfa/fpdfxfa_app.h"
  12 #include "../include/fpdfxfa/fpdfxfa_page.h"
  13
  14 #if _FX_OS_ == _FX_ANDROID_
  15 #include "time.h"
  16 #else
  17 #include <ctime>
  18 #endif
  19
  20 DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_CreateNewDocument()
  21 {
  22         CPDF_Document* pDoc = FX_NEW CPDF_Document;
  23         if (!pDoc)
  24                 return NULL;
  25         pDoc->CreateNewDoc();
  26         time_t currentTime;
  27
  28         CFX_ByteString DateStr;
  29
  30         if(FSDK_IsSandBoxPolicyEnabled(FPDF_POLICY_MACHINETIME_ACCESS))
  31         {
  32                 if ( -1 != time( &currentTime ) )
  33                 {
  34                         tm * pTM = localtime( &currentTime );
  35                         if ( pTM )
  36                         {
  37                                 DateStr.Format( "D:%04d%02d%02d%02d%02d%02d", pTM->tm_year+1900, pTM->tm_mon+1,
  38                                         pTM->tm_mday, pTM->tm_hour, pTM->tm_min, pTM->tm_sec );
  39                         }
  40                 }
  41         }
  42
  43         CPDF_Dictionary* pInfoDict = NULL;
  44         pInfoDict = pDoc->GetInfo();
  45         if (pInfoDict)
  46         {
  47                 if(FSDK_IsSandBoxPolicyEnabled(FPDF_POLICY_MACHINETIME_ACCESS))
  48                         pInfoDict->SetAt("CreationDate", new CPDF_String(DateStr));
  49                 pInfoDict->SetAt("Creator",FX_NEW CPDF_String(L"PDFium"));
  50         }
  51
  52         CPDFXFA_App* pApp = CPDFXFA_App::GetInstance();
  53         CPDFXFA_Document* document = FX_NEW CPDFXFA_Document(pDoc, pApp);
  54         return document;
  55 }
  56
  57 DLLEXPORT void STDCALL FPDFPage_Delete(FPDF_DOCUMENT document, int page_index)
  58 {
  59         CPDF_Document* pDoc = ((CPDFXFA_Document*)document)->GetPDFDoc();
  60         if (pDoc == NULL)
  61                 return;
  62         if (page_index < 0 || page_index >= pDoc->GetPageCount())
  63                 return;
  64
  65         pDoc->DeletePage(page_index);
  66 }
  67
  68 DLLEXPORT FPDF_PAGE STDCALL FPDFPage_New(FPDF_DOCUMENT document, int page_index, double width, double height)
  69 {
  70         if (!document)
  71                 return NULL;
  72
  73 //      CPDF_Parser* pParser = (CPDF_Parser*)document;
  74         CPDF_Document* pDoc = ((CPDFXFA_Document*)document)->GetPDFDoc();
  75         if(page_index < 0)
  76                 page_index = 0;
  77         if(pDoc->GetPageCount()<page_index)
  78                 page_index = pDoc->GetPageCount();
  79 //      if (page_index < 0 || page_index >= pDoc->GetPageCount())
  80 //              return NULL;
  81
  82         CPDF_Dictionary* pPageDict = pDoc->CreateNewPage(page_index);
  83         if(!pPageDict)
  84                 return NULL;
  85         CPDF_Array* pMediaBoxArray = FX_NEW CPDF_Array;
  86         pMediaBoxArray->Add(FX_NEW CPDF_Number(0));
  87         pMediaBoxArray->Add(FX_NEW CPDF_Number(0));
  88         pMediaBoxArray->Add(FX_NEW CPDF_Number(FX_FLOAT(width)));
  89         pMediaBoxArray->Add(FX_NEW CPDF_Number(FX_FLOAT(height)));
  90
  91         pPageDict->SetAt("MediaBox", pMediaBoxArray);
  92         pPageDict->SetAt("Rotate", FX_NEW CPDF_Number(0));
  93         pPageDict->SetAt("Resources", FX_NEW CPDF_Dictionary);
  94
  95 //      CPDF_Page* pPage = FX_NEW CPDF_Page;
  96 //      pPage->Load(pDoc,pPageDict);
  97 //      pPage->ParseContent();
  98
  99         CPDFXFA_Page* pPage = FX_NEW CPDFXFA_Page((CPDFXFA_Document*)document, page_index);
 100         pPage->LoadPDFPage(pPageDict);
 101
 102         return pPage;
 103 }
 104
 105 DLLEXPORT int STDCALL FPDFPage_GetRotation(FPDF_PAGE page)
 106 {
 107         CPDF_Page* pPage = ((CPDFXFA_Page*)page)->GetPDFPage();
 108         if (!pPage || !pPage->m_pFormDict || !pPage->m_pFormDict->KeyExist("Type") || !pPage->m_pFormDict->GetElement("Type")->GetDirect()
 109                 || pPage->m_pFormDict->GetElement("Type")->GetDirect()->GetString().Compare("Page"))
 110         {
 111                 return -1;
 112         }
 113         CPDF_Dictionary* pDict = pPage->m_pFormDict;
 114
 115         int rotate = 0;
 116         if(pDict != NULL)
 117         {
 118                 if (pDict->KeyExist("Rotate"))
 119                         rotate = pDict->GetElement("Rotate")->GetDirect()? pDict->GetElement("Rotate")->GetDirect()->GetInteger() / 90 : 0;
 120                 else
 121                 {
 122                         if(pDict->KeyExist("Parent"))
 123                         {
 124                                 CPDF_Dictionary* pPages = (CPDF_Dictionary*)pDict->GetElement("Parent")->GetDirect();
 125                                 while(pPages)
 126                                 {
 127                                         if(pPages->KeyExist("Rotate"))
 128                                         {
 129                                                 rotate = pPages->GetElement("Rotate")->GetDirect()? pPages->GetElement("Rotate")->GetDirect()->GetInteger() / 90 : 0;
 130                                                 break;
 131                                         }
 132                                         else if(pPages->KeyExist("Parent"))
 133                                                 pPages = (CPDF_Dictionary*)pPages->GetElement("Parent")->GetDirect();
 134                                         else break;
 135                                 }
 136                         }
 137                 }
 138         }
 139         else
 140         {
 141                 return -1;
 142         }
 143
 144         return rotate;
 145 }
 146
 147 DLLEXPORT void STDCALL FPDFPage_InsertObject(FPDF_PAGE page, FPDF_PAGEOBJECT page_obj)
 148 {
 149         CPDF_Page* pPage = ((CPDFXFA_Page*)page)->GetPDFPage();
 150         if (!pPage || !pPage->m_pFormDict || !pPage->m_pFormDict->KeyExist("Type") || !pPage->m_pFormDict->GetElement("Type")->GetDirect()
 151                 || pPage->m_pFormDict->GetElement("Type")->GetDirect()->GetString().Compare("Page"))
 152         {
 153                 return;
 154         }
 155         CPDF_PageObject* pPageObj = (CPDF_PageObject*)page_obj;
 156         if(pPageObj == NULL)
 157                 return;
 158         FX_POSITION LastPersition = pPage->GetLastObjectPosition();
 159
 160         pPage->InsertObject(LastPersition, pPageObj);
 161         switch(pPageObj->m_Type)
 162         {
 163         case FPDF_PAGEOBJ_PATH:
 164                 {
 165                         CPDF_PathObject* pPathObj = (CPDF_PathObject*)pPageObj;
 166                         pPathObj->CalcBoundingBox();
 167                         break;
 168                 }
 169         case FPDF_PAGEOBJ_TEXT:
 170                 {
 171                         //      CPDF_PathObject* pPathObj = (CPDF_PathObject*)pPageObj;
 172                         //      pPathObj->CalcBoundingBox();
 173                         break;
 174                 }
 175         case FPDF_PAGEOBJ_IMAGE:
 176                 {
 177                         CPDF_ImageObject* pImageObj = (CPDF_ImageObject*)pPageObj;
 178                         pImageObj->CalcBoundingBox();
 179                         break;
 180                 }
 181         case FPDF_PAGEOBJ_SHADING:
 182                 {
 183                         CPDF_ShadingObject* pShadingObj = (CPDF_ShadingObject*)pPageObj;
 184                         pShadingObj->CalcBoundingBox();
 185                         break;
 186                 }
 187         case FPDF_PAGEOBJ_FORM:
 188                 {
 189                         CPDF_FormObject* pFormObj = (CPDF_FormObject*)pPageObj;
 190                         pFormObj->CalcBoundingBox();
 191                         break;
 192                 }
 193         default:
 194                 break;
 195         }
 196
 197         //      pPage->ParseContent();
 198         //pPage->GenerateContent();
 199
 200 }
 201
 202 DLLEXPORT int STDCALL FPDFPage_CountObject(FPDF_PAGE page)
 203 {
 204         CPDF_Page* pPage = ((CPDFXFA_Page*)page)->GetPDFPage();
 205         if (!pPage || !pPage->m_pFormDict || !pPage->m_pFormDict->KeyExist("Type") || !pPage->m_pFormDict->GetElement("Type")->GetDirect()
 206                 || pPage->m_pFormDict->GetElement("Type")->GetDirect()->GetString().Compare("Page"))
 207         {
 208                 return -1;
 209         }
 210         return pPage->CountObjects();
 211 //      return 0;
 212 }
 213
 214 DLLEXPORT FPDF_PAGEOBJECT STDCALL FPDFPage_GetObject(FPDF_PAGE page, int index)
 215 {
 216         CPDF_Page* pPage = ((CPDFXFA_Page*)page)->GetPDFPage();
 217         if (!pPage || !pPage->m_pFormDict || !pPage->m_pFormDict->KeyExist("Type")
 218                 || pPage->m_pFormDict->GetElement("Type")->GetDirect()->GetString().Compare("Page"))
 219         {
 220                 return NULL;
 221         }
 222         return pPage->GetObjectByIndex(index);
 223 //      return NULL;
 224 }
 225
 226 DLLEXPORT FPDF_BOOL STDCALL FPDFPage_HasTransparency(FPDF_PAGE page)
 227 {
 228         if(!page) return FALSE;
 229         CPDF_Page* pPage = ((CPDFXFA_Page*)page)->GetPDFPage();
 230         if (!pPage) return FALSE;
 231
 232         return pPage->BackgroundAlphaNeeded();
 233 }
 234
 235 DLLEXPORT FPDF_BOOL STDCALL FPDFPageObj_HasTransparency(FPDF_PAGEOBJECT pageObject)
 236 {
 237         if(!pageObject) return FALSE;
 238         CPDF_PageObject* pPageObj = (CPDF_PageObject*)pageObject;
 239
 240         const CPDF_GeneralStateData* pGeneralState = pPageObj->m_GeneralState;
 241         int blend_type = pGeneralState ? pGeneralState->m_BlendType : FXDIB_BLEND_NORMAL;
 242         if (blend_type != FXDIB_BLEND_NORMAL) return TRUE;
 243
 244         CPDF_Dictionary* pSMaskDict = pGeneralState ? (CPDF_Dictionary*)pGeneralState->m_pSoftMask : NULL;
 245         if(pSMaskDict) return TRUE;
 246
 247         if(pGeneralState && pGeneralState->m_FillAlpha != 1.0f)
 248                 return TRUE;
 249
 250         if(pPageObj->m_Type == PDFPAGE_PATH)
 251         {
 252                 if(pGeneralState && pGeneralState->m_StrokeAlpha != 1.0f)
 253                         return TRUE;
 254         }
 255
 256         if(pPageObj->m_Type == PDFPAGE_FORM)
 257         {
 258                 CPDF_FormObject* pFormObj = (CPDF_FormObject*)pPageObj;
 259                 if(pFormObj->m_pForm && (pFormObj->m_pForm->m_Transparency & PDFTRANS_ISOLATED))
 260                         return TRUE;
 261                 if(pFormObj->m_pForm && (!(pFormObj->m_pForm->m_Transparency & PDFTRANS_ISOLATED) && (pFormObj->m_pForm->m_Transparency & PDFTRANS_GROUP)))
 262                         return TRUE;
 263         }
 264         return FALSE;
 265 }
 266
 267 DLLEXPORT FPDF_BOOL STDCALL FPDFPage_GenerateContent(FPDF_PAGE page)
 268 {
 269         CPDF_Page* pPage = ((CPDFXFA_Page*)page)->GetPDFPage();
 270         if (!pPage || !pPage->m_pFormDict || !pPage->m_pFormDict->KeyExist("Type") || !pPage->m_pFormDict->GetElement("Type")->GetDirect()
 271                 || pPage->m_pFormDict->GetElement("Type")->GetDirect()->GetString().Compare("Page"))
 272         {
 273                 return FALSE;
 274         }
 275         CPDF_PageContentGenerate CG(pPage);
 276         CG.GenerateContent();
 277
 278         return TRUE;
 279 }
 280
 281 DLLEXPORT void STDCALL FPDFPageObj_Transform(FPDF_PAGEOBJECT page_object,
 282                          double a, double b, double c, double d, double e, double f)
 283 {
 284         CPDF_PageObject* pPageObj = (CPDF_PageObject*)page_object;
 285         if(pPageObj == NULL)
 286                 return;
 287 //PDF_ImageObject* pImageObj = FX_NEW CPDF_ImageObject;
 288         CFX_AffineMatrix matrix((FX_FLOAT)a,(FX_FLOAT)b,(FX_FLOAT)c,(FX_FLOAT)d,(FX_FLOAT)e,(FX_FLOAT)f);
 289         pPageObj->Transform(matrix);
 290 }
 291 DLLEXPORT void STDCALL FPDFPage_TransformAnnots(FPDF_PAGE page,
 292                                                                                            double a, double b, double c, double d, double e, double f)
 293 {
 294         if(page == NULL)
 295                 return;
 296         CPDF_Page* pPage = ((CPDFXFA_Page*)page)->GetPDFPage();
 297         if (!pPage) return;
 298         CPDF_AnnotList AnnotList(pPage);
 299         for (int i=0; i<AnnotList.Count();i++)
 300         {
 301                 CPDF_Annot* pAnnot = AnnotList.GetAt(i);
 302                 // transformAnnots Rectangle
 303                 CPDF_Rect rect;
 304                 pAnnot->GetRect(rect);
 305                 CFX_AffineMatrix matrix((FX_FLOAT)a,(FX_FLOAT)b,(FX_FLOAT)c,(FX_FLOAT)d,(FX_FLOAT)e,(FX_FLOAT)f);
 306                 rect.Transform(&matrix);
 307                 CPDF_Array *pRectArray = NULL;
 308                 pRectArray = pAnnot->GetAnnotDict()->GetArray("Rect");
 309                 if (!pRectArray) pRectArray=CPDF_Array::Create();
 310                 pRectArray->SetAt(0, new CPDF_Number(rect.left));
 311                 pRectArray->SetAt(1, new CPDF_Number(rect.bottom));
 312                 pRectArray->SetAt(2, new CPDF_Number(rect.right));
 313                 pRectArray->SetAt(3, new CPDF_Number(rect.top));
 314                 pAnnot->GetAnnotDict()->SetAt("Rect",pRectArray);
 315
 316                 //Transform AP's rectangle
 317                 //To Do
 318
 319         }
 320
 321 }
 322
 323 DLLEXPORT void STDCALL FPDFPage_SetRotation(FPDF_PAGE page, int rotate)
 324 {
 325         if (page == NULL)
 326                 return;
 327         CPDF_Page* pPage = ((CPDFXFA_Page*)page)->GetPDFPage();
 328         if (!pPage) return;
 329
 330         if (!pPage || !pPage->m_pFormDict || !pPage->m_pFormDict->KeyExist("Type") || !pPage->m_pFormDict->GetElement("Type")->GetDirect()
 331                 || pPage->m_pFormDict->GetElement("Type")->GetDirect()->GetString().Compare("Page"))
 332         {
 333                 return;
 334         }
 335         CPDF_Dictionary* pDict = pPage->m_pFormDict;
 336         rotate %=4;
 337
 338         pDict->SetAt("Rotate", FX_NEW CPDF_Number(rotate * 90));
 339 }