// 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_transformpage.h" #include "../include/fsdk_define.h" #include "../include/fpdfxfa/fpdfxfa_doc.h" #include "../include/fpdfxfa/fpdfxfa_page.h" DLLEXPORT void STDCALL FPDFPage_SetMediaBox(FPDF_PAGE page, float left, float bottom, float right, float top) { if(!page) return; CPDF_Page* pPage = ((CPDFXFA_Page*)page)->GetPDFPage(); if (!pPage) return; CPDF_Dictionary* pPageDict = pPage->m_pFormDict; CPDF_Array* pMediaBoxArray = FX_NEW CPDF_Array; pMediaBoxArray->Add(FX_NEW CPDF_Number(left)); pMediaBoxArray->Add(FX_NEW CPDF_Number(bottom)); pMediaBoxArray->Add(FX_NEW CPDF_Number(FX_FLOAT(right))); pMediaBoxArray->Add(FX_NEW CPDF_Number(FX_FLOAT(top))); pPageDict->SetAt("MediaBox", pMediaBoxArray); } DLLEXPORT void STDCALL FPDFPage_SetCropBox(FPDF_PAGE page, float left, float bottom, float right, float top) { if(!page) return; CPDF_Page* pPage = ((CPDFXFA_Page*)page)->GetPDFPage(); if (!pPage) return; CPDF_Dictionary* pPageDict = pPage->m_pFormDict; CPDF_Array* pCropBoxArray = FX_NEW CPDF_Array; pCropBoxArray->Add(FX_NEW CPDF_Number(left)); pCropBoxArray->Add(FX_NEW CPDF_Number(bottom)); pCropBoxArray->Add(FX_NEW CPDF_Number(FX_FLOAT(right))); pCropBoxArray->Add(FX_NEW CPDF_Number(FX_FLOAT(top))); pPageDict->SetAt("CropBox", pCropBoxArray); } DLLEXPORT FPDF_BOOL STDCALL FPDFPage_GetMediaBox(FPDF_PAGE page, float* left, float* bottom, float* right, float* top) { if(!page) return FALSE; CPDF_Page* pPage = ((CPDFXFA_Page*)page)->GetPDFPage(); if (!pPage) return FALSE; CPDF_Dictionary* pPageDict = pPage->m_pFormDict; CPDF_Array* pArray = pPageDict->GetArray("MediaBox"); if(pArray) { *left = pArray->GetFloat(0); *bottom = pArray->GetFloat(1); *right = pArray->GetFloat(2); *top = pArray->GetFloat(3); return TRUE; } return FALSE; } DLLEXPORT FPDF_BOOL STDCALL FPDFPage_GetCropBox(FPDF_PAGE page, float* left, float* bottom, float* right, float* top) { if(!page) return FALSE; CPDF_Page* pPage = ((CPDFXFA_Page*)page)->GetPDFPage(); if (!pPage) return FALSE; CPDF_Dictionary* pPageDict = pPage->m_pFormDict; CPDF_Array* pArray = pPageDict->GetArray("CropBox"); if(pArray) { *left = pArray->GetFloat(0); *bottom = pArray->GetFloat(1); *right = pArray->GetFloat(2); *top = pArray->GetFloat(3); return TRUE; } return FALSE; } DLLEXPORT FPDF_BOOL STDCALL FPDFPage_TransFormWithClip(FPDF_PAGE page, FS_MATRIX* matrix, FS_RECTF* clipRect) { if(!page) return FALSE; CPDF_Page* pPage = ((CPDFXFA_Page*)page)->GetPDFPage(); if (!pPage) return FALSE; CFX_ByteTextBuf textBuf; textBuf<<"q "; CFX_FloatRect rect(clipRect->left, clipRect->bottom, clipRect->right, clipRect->top); rect.Normalize(); CFX_ByteString bsClipping; bsClipping.Format("%f %f %f %f re W* n ", rect.left, rect.bottom, rect.Width(), rect.Height()); textBuf<<bsClipping; CFX_ByteString bsMatix; bsMatix.Format("%f %f %f %f %f %f cm ", matrix->a, matrix->b,matrix->c,matrix->d,matrix->e,matrix->f); textBuf<<bsMatix; CPDF_Dictionary* pPageDic = pPage->m_pFormDict; CPDF_Object* pContentObj = pPageDic ? pPageDic->GetElement("Contents") : NULL; if(!pContentObj) pContentObj = pPageDic ? pPageDic->GetArray("Contents") : NULL; if(!pContentObj) return FALSE; CPDF_Dictionary* pDic = FX_NEW CPDF_Dictionary; CPDF_Stream* pStream = FX_NEW CPDF_Stream(NULL,0, pDic); pStream->SetData(textBuf.GetBuffer(), textBuf.GetSize(), FALSE, FALSE); CPDF_Document* pDoc = pPage->m_pDocument; if(!pDoc) return FALSE; pDoc->AddIndirectObject(pStream); pDic = new CPDF_Dictionary; CPDF_Stream* pEndStream = new CPDF_Stream(NULL,0, pDic); pEndStream->SetData((const uint8_t*)" Q", 2, FALSE, FALSE); pDoc->AddIndirectObject(pEndStream); CPDF_Array* pContentArray = NULL; if (pContentObj && pContentObj->GetType() == PDFOBJ_ARRAY) { pContentArray = (CPDF_Array*)pContentObj; CPDF_Reference* pRef = FX_NEW CPDF_Reference(pDoc, pStream->GetObjNum()); pContentArray->InsertAt(0, pRef); pContentArray->AddReference(pDoc,pEndStream); } else if(pContentObj && pContentObj->GetType() == PDFOBJ_REFERENCE) { CPDF_Reference* pReference = (CPDF_Reference*)pContentObj; CPDF_Object* pDirectObj = pReference->GetDirect(); if(pDirectObj != NULL) { if(pDirectObj->GetType() == PDFOBJ_ARRAY) { pContentArray = (CPDF_Array*)pDirectObj; CPDF_Reference* pRef = FX_NEW CPDF_Reference(pDoc, pStream->GetObjNum()); pContentArray->InsertAt(0, pRef); pContentArray->AddReference(pDoc,pEndStream); } else if(pDirectObj->GetType() == PDFOBJ_STREAM) { pContentArray = FX_NEW CPDF_Array(); pContentArray->AddReference(pDoc,pStream->GetObjNum()); pContentArray->AddReference(pDoc,pDirectObj->GetObjNum()); pContentArray->AddReference(pDoc, pEndStream); pPageDic->SetAtReference("Contents", pDoc, pDoc->AddIndirectObject(pContentArray)); } } } //Need to transform the patterns as well. CPDF_Dictionary* pRes = pPageDic->GetDict(FX_BSTRC("Resources")); if(pRes) { CPDF_Dictionary* pPattenDict = pRes->GetDict(FX_BSTRC("Pattern")); if(pPattenDict) { FX_POSITION pos = pPattenDict->GetStartPos(); while(pos) { CPDF_Dictionary* pDict = NULL; CFX_ByteString key; CPDF_Object* pObj = pPattenDict->GetNextElement(pos, key); if(pObj->GetType() == PDFOBJ_REFERENCE) pObj = pObj->GetDirect(); if(pObj->GetType() == PDFOBJ_DICTIONARY) { pDict = (CPDF_Dictionary*)pObj; } else if(pObj->GetType() == PDFOBJ_STREAM) { pDict = ((CPDF_Stream*)pObj)->GetDict(); } else continue; CFX_AffineMatrix m = pDict->GetMatrix(FX_BSTRC("Matrix")); CFX_AffineMatrix t = *(CFX_AffineMatrix*)matrix; m.Concat(t); pDict->SetAtMatrix(FX_BSTRC("Matrix"), m); } } } return TRUE; } DLLEXPORT void STDCALL FPDFPageObj_TransformClipPath(FPDF_PAGEOBJECT page_object,double a, double b, double c, double d, double e, double f) { CPDF_PageObject* pPageObj = (CPDF_PageObject*)page_object; if(pPageObj == NULL) return; CFX_AffineMatrix matrix((FX_FLOAT)a,(FX_FLOAT)b,(FX_FLOAT)c,(FX_FLOAT)d,(FX_FLOAT)e,(FX_FLOAT)f); //Special treatment to shading object, because the ClipPath for shading object is already transformed. if(pPageObj->m_Type != PDFPAGE_SHADING) pPageObj->TransformClipPath(matrix); pPageObj->TransformGeneralState(matrix); } DLLEXPORT FPDF_CLIPPATH STDCALL FPDF_CreateClipPath(float left, float bottom, float right, float top) { CPDF_ClipPath* pNewClipPath = FX_NEW CPDF_ClipPath(); pNewClipPath->GetModify(); CPDF_Path Path; Path.GetModify(); Path.AppendRect(left, bottom, right, top); pNewClipPath->AppendPath(Path, FXFILL_ALTERNATE, FALSE); return pNewClipPath; } DLLEXPORT void STDCALL FPDF_DestroyClipPath(FPDF_CLIPPATH clipPath) { delete (CPDF_ClipPath*)clipPath; } void OutputPath(CFX_ByteTextBuf& buf, CPDF_Path path) { const CFX_PathData* pPathData = path; if (pPathData == NULL) return; FX_PATHPOINT* pPoints = pPathData->GetPoints(); if (path.IsRect()) { buf << (pPoints[0].m_PointX) << " " << (pPoints[0].m_PointY) << " " << (pPoints[2].m_PointX - pPoints[0].m_PointX) << " " << (pPoints[2].m_PointY - pPoints[0].m_PointY) << " re\n"; return; } CFX_ByteString temp; for (int i = 0; i < pPathData->GetPointCount(); i ++) { buf << (pPoints[i].m_PointX) << " " << (pPoints[i].m_PointY); int point_type = pPoints[i].m_Flag & FXPT_TYPE; if (point_type == FXPT_MOVETO) buf << " m\n"; else if (point_type == FXPT_BEZIERTO) { buf << " " << (pPoints[i+1].m_PointX) << " " << (pPoints[i+1].m_PointY) << " " << (pPoints[i+2].m_PointX) << " " << (pPoints[i+2].m_PointY); if (pPoints[i+2].m_Flag & FXPT_CLOSEFIGURE) buf << " c h\n"; else buf << " c\n"; i += 2; } else if (point_type == FXPT_LINETO) { if (pPoints[i].m_Flag & FXPT_CLOSEFIGURE) buf << " l h\n"; else buf << " l\n"; } } } DLLEXPORT void STDCALL FPDFPage_InsertClipPath(FPDF_PAGE page,FPDF_CLIPPATH clipPath) { if(!page) return; CPDF_Page* pPage = ((CPDFXFA_Page*)page)->GetPDFPage(); if (!pPage) return; CPDF_Dictionary* pPageDic = pPage->m_pFormDict; CPDF_Object* pContentObj = pPageDic ? pPageDic->GetElement("Contents") : NULL; if(!pContentObj) pContentObj = pPageDic ? pPageDic->GetArray("Contents") : NULL; if(!pContentObj) return; CFX_ByteTextBuf strClip; CPDF_ClipPath* pClipPath = (CPDF_ClipPath*)clipPath; FX_DWORD i; for (i = 0; i < pClipPath->GetPathCount(); i ++) { CPDF_Path path = pClipPath->GetPath(i); int iClipType = pClipPath->GetClipType(i); if (path.GetPointCount() == 0) { // Empty clipping (totally clipped out) strClip << "0 0 m W n "; } else { OutputPath(strClip, path); if (iClipType == FXFILL_WINDING) strClip << "W n\n"; else strClip << "W* n\n"; } } CPDF_Dictionary* pDic = FX_NEW CPDF_Dictionary; CPDF_Stream* pStream = FX_NEW CPDF_Stream(NULL,0, pDic); pStream->SetData(strClip.GetBuffer(), strClip.GetSize(), FALSE, FALSE); CPDF_Document* pDoc = pPage->m_pDocument; if(!pDoc) return; pDoc->AddIndirectObject(pStream); CPDF_Array* pContentArray = NULL; if (pContentObj && pContentObj->GetType() == PDFOBJ_ARRAY) { pContentArray = (CPDF_Array*)pContentObj; CPDF_Reference* pRef = FX_NEW CPDF_Reference(pDoc, pStream->GetObjNum()); pContentArray->InsertAt(0, pRef); } else if(pContentObj && pContentObj->GetType() == PDFOBJ_REFERENCE) { CPDF_Reference* pReference = (CPDF_Reference*)pContentObj; CPDF_Object* pDirectObj = pReference->GetDirect(); if(pDirectObj != NULL) { if(pDirectObj->GetType() == PDFOBJ_ARRAY) { pContentArray = (CPDF_Array*)pDirectObj; CPDF_Reference* pRef = FX_NEW CPDF_Reference(pDoc, pStream->GetObjNum()); pContentArray->InsertAt(0, pRef); } else if(pDirectObj->GetType() == PDFOBJ_STREAM) { pContentArray = FX_NEW CPDF_Array(); pContentArray->AddReference(pDoc,pStream->GetObjNum()); pContentArray->AddReference(pDoc,pDirectObj->GetObjNum()); pPageDic->SetAtReference("Contents", pDoc, pDoc->AddIndirectObject(pContentArray)); } } } }