DLLEXPORT void STDCALL FPDFPage_InsertClipPath(FPDF_PAGE page,
FPDF_CLIPPATH clipPath) {
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
if (!pPage)
return;
CPDF_Dictionary* pPageDic = pPage->m_pFormDict;
CPDF_Object* pContentObj =
pPageDic ? pPageDic->GetElement("Contents") : nullptr;
if (!pContentObj)
pContentObj = pPageDic ? pPageDic->GetArrayBy("Contents") : nullptr;
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 = new CPDF_Dictionary;
CPDF_Stream* pStream = new CPDF_Stream(nullptr, 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 = nullptr;
if (CPDF_Array* pArray = ToArray(pContentObj)) {
pContentArray = pArray;
CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
pContentArray->InsertAt(0, pRef);
} else if (CPDF_Reference* pReference = ToReference(pContentObj)) {
CPDF_Object* pDirectObj = pReference->GetDirect();
if (pDirectObj) {
if (CPDF_Array* pArray = pDirectObj->AsArray()) {
pContentArray = pArray;
CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
pContentArray->InsertAt(0, pRef);
} else if (pDirectObj->IsStream()) {
pContentArray = new CPDF_Array();
pContentArray->AddReference(pDoc, pStream->GetObjNum());
pContentArray->AddReference(pDoc, pDirectObj->GetObjNum());
pPageDic->SetAtReference("Contents", pDoc,
pDoc->AddIndirectObject(pContentArray));
}
}
}
}
DLLEXPORT void STDCALL FPDFPage_InsertClipPath(FPDF_PAGE page,FPDF_CLIPPATH clipPath)
{
if(!page)
return;
CPDF_Page* pPage = (CPDF_Page*)page;
CPDF_Dictionary* pPageDic = pPage->m_pFormDict;
CPDF_Object* pContentObj = pPageDic->GetElement("Contents");
if(!pContentObj)
pContentObj = pPageDic->GetArray("Contents");
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));
}
}
}
}
