FX_FLOAT GetMinMaxValue( CPDF_RectArray& array, FPDF_TYPE type, FPDF_VALUE value)
{
int nRects = array.GetSize();
FX_FLOAT fRet = 0.0f;
if (nRects <= 0)return 0.0f;
FX_FLOAT* pArray = new FX_FLOAT[nRects];
switch(value)
{
case LEFT:
{
for (int i = 0; i < nRects; i++)
pArray[i] = CPDF_Rect(array.GetAt(i)).left;
break;
}
case TOP:
{
for (int i = 0; i < nRects; i++)
pArray[i] = CPDF_Rect(array.GetAt(i)).top;
break;
}
case RIGHT:
{
for (int i = 0; i < nRects; i++)
pArray[i] = CPDF_Rect(array.GetAt(i)).right;
break;
}
case BOTTOM:
{
for (int i = 0; i < nRects; i++)
pArray[i] = CPDF_Rect(array.GetAt(i)).bottom;
break;
}
default:
break;
}
fRet = pArray[0];
if (type == MAX)
{
for (int i = 1; i < nRects; i++)
if (fRet <= pArray[i])
fRet = pArray[i];
}
else
{
for (int i = 1; i < nRects; i++)
if (fRet >= pArray[i])
fRet = pArray[i];
}
delete[] pArray;
return fRet;
}
DLLEXPORT int STDCALL FPDFPage_Flatten( FPDF_PAGE page, int nFlag)
{
if (!page)
{
return FLATTEN_FAIL;
}
CPDF_Page * pPage = (CPDF_Page*)( page );
CPDF_Document * pDocument = pPage->m_pDocument;
CPDF_Dictionary * pPageDict = pPage->m_pFormDict;
if ( !pDocument || !pPageDict )
{
return FLATTEN_FAIL;
}
CPDF_ObjectArray ObjectArray;
CPDF_RectArray RectArray;
int iRet = FLATTEN_FAIL;
iRet = ParserAnnots( pDocument, pPageDict, &RectArray, &ObjectArray, nFlag);
if (iRet == FLATTEN_NOTINGTODO)
{
return FLATTEN_NOTINGTODO;
}else if (iRet == FLATTEN_FAIL)
{
return FLATTEN_FAIL;
}
CPDF_Rect rcOriginalCB;
CPDF_Rect rcMerger = CalculateRect( &RectArray );
CPDF_Rect rcOriginalMB = pPageDict->GetRect("MediaBox");
if (pPageDict->KeyExist("CropBox"))
rcOriginalMB = pPageDict->GetRect("CropBox");
if (rcOriginalMB.IsEmpty())
{
rcOriginalMB = CPDF_Rect(0.0f, 0.0f, 612.0f, 792.0f);
}
rcMerger.left = rcMerger.left < rcOriginalMB.left? rcOriginalMB.left : rcMerger.left;
rcMerger.right = rcMerger.right > rcOriginalMB.right? rcOriginalMB.right : rcMerger.right;
rcMerger.top = rcMerger.top > rcOriginalMB.top? rcOriginalMB.top : rcMerger.top;
rcMerger.bottom = rcMerger.bottom < rcOriginalMB.bottom? rcOriginalMB.bottom : rcMerger.bottom;
if (pPageDict->KeyExist("ArtBox"))
rcOriginalCB = pPageDict->GetRect("ArtBox");
else
rcOriginalCB = rcOriginalMB;
if (!rcOriginalMB.IsEmpty())
{
CPDF_Array* pMediaBox = FX_NEW CPDF_Array();
pMediaBox->Add(FX_NEW CPDF_Number(rcOriginalMB.left));
pMediaBox->Add(FX_NEW CPDF_Number(rcOriginalMB.bottom));
pMediaBox->Add(FX_NEW CPDF_Number(rcOriginalMB.right));
pMediaBox->Add(FX_NEW CPDF_Number(rcOriginalMB.top));
pPageDict->SetAt("MediaBox",pMediaBox);
}
if (!rcOriginalCB.IsEmpty())
{
CPDF_Array* pCropBox = FX_NEW CPDF_Array();
pCropBox->Add(FX_NEW CPDF_Number(rcOriginalCB.left));
pCropBox->Add(FX_NEW CPDF_Number(rcOriginalCB.bottom));
pCropBox->Add(FX_NEW CPDF_Number(rcOriginalCB.right));
pCropBox->Add(FX_NEW CPDF_Number(rcOriginalCB.top));
pPageDict->SetAt("ArtBox", pCropBox);
}
CPDF_Dictionary* pRes = NULL;
pRes = pPageDict->GetDict("Resources");
if (!pRes)
{
pRes = FX_NEW CPDF_Dictionary;
pPageDict->SetAt( "Resources", pRes );
}
CPDF_Stream* pNewXObject = FX_NEW CPDF_Stream(NULL, 0, FX_NEW CPDF_Dictionary);
FX_DWORD dwObjNum = pDocument->AddIndirectObject(pNewXObject);
CPDF_Dictionary* pPageXObject = pRes->GetDict("XObject");
if (!pPageXObject)
{
pPageXObject = FX_NEW CPDF_Dictionary;
pRes->SetAt("XObject", pPageXObject);
}
CFX_ByteString key = "";
int nStreams = ObjectArray.GetSize();
if (nStreams > 0)
{
for (int iKey = 0; /*iKey < 100*/; iKey++)
{
char sExtend[5] = {0};
FXSYS_itoa(iKey, sExtend, 10);
key = CFX_ByteString("FFT") + CFX_ByteString(sExtend);
if (!pPageXObject->KeyExist(key))
break;
}
}
SetPageContents(key, pPageDict, pDocument);
CPDF_Dictionary* pNewXORes = NULL;
if (!key.IsEmpty())
{
pPageXObject->SetAtReference(key, pDocument, dwObjNum);
CPDF_Dictionary* pNewOXbjectDic = pNewXObject->GetDict();
pNewXORes = FX_NEW CPDF_Dictionary;
pNewOXbjectDic->SetAt("Resources", pNewXORes);
pNewOXbjectDic->SetAtName("Type", "XObject");
pNewOXbjectDic->SetAtName("Subtype", "Form");
pNewOXbjectDic->SetAtInteger("FormType", 1);
pNewOXbjectDic->SetAtName("Name", "FRM");
CPDF_Rect rcBBox = pPageDict->GetRect("ArtBox");
pNewOXbjectDic->SetAtRect("BBox", rcBBox);
}
for (int i = 0; i < nStreams; i++)
{
CPDF_Dictionary* pAnnotDic = ObjectArray.GetAt(i);
if (!pAnnotDic)continue;
CPDF_Rect rcAnnot = pAnnotDic->GetRect("Rect");
rcAnnot.Normalize();
CFX_ByteString sAnnotState = pAnnotDic->GetString("AS");
CPDF_Dictionary* pAnnotAP = pAnnotDic->GetDict("AP");
if (!pAnnotAP)continue;
CPDF_Stream* pAPStream = pAnnotAP->GetStream("N");
if (!pAPStream)
{
CPDF_Dictionary* pAPDic = pAnnotAP->GetDict("N");
if (!pAPDic)continue;
if (!sAnnotState.IsEmpty())
{
pAPStream = pAPDic->GetStream(sAnnotState);
}
else
{
FX_POSITION pos = pAPDic->GetStartPos();
if (pos)
{
CFX_ByteString sKey;
CPDF_Object* pFirstObj = pAPDic->GetNextElement(pos, sKey);
if (pFirstObj)
{
if (pFirstObj->GetType() == PDFOBJ_REFERENCE)
pFirstObj = pFirstObj->GetDirect();
if (pFirstObj->GetType() != PDFOBJ_STREAM)
continue;
pAPStream = (CPDF_Stream*)pFirstObj;
}
}
}
}
if (!pAPStream)continue;
CPDF_Dictionary* pAPDic = pAPStream->GetDict();
CFX_AffineMatrix matrix = pAPDic->GetMatrix("Matrix");
CPDF_Rect rcStream;
if (pAPDic->KeyExist("Rect"))
rcStream = pAPDic->GetRect("Rect");
else if (pAPDic->KeyExist("BBox"))
rcStream = pAPDic->GetRect("BBox");
if (rcStream.IsEmpty())continue;
CPDF_Object* pObj = pAPStream;
if (pObj)
{
CPDF_Dictionary* pObjDic = pObj->GetDict();
if (pObjDic)
{
pObjDic->SetAtName("Type", "XObject");
pObjDic->SetAtName("Subtype", "Form");
}
}
CPDF_Dictionary* pXObject = pNewXORes->GetDict("XObject");
if (!pXObject)
{
pXObject = FX_NEW CPDF_Dictionary;
pNewXORes->SetAt("XObject", pXObject);
}
CFX_ByteString sFormName;
sFormName.Format("F%d", i);
FX_DWORD dwObjNum = pDocument->AddIndirectObject(pObj);
pXObject->SetAtReference(sFormName, pDocument, dwObjNum);
CPDF_StreamAcc acc;
acc.LoadAllData(pNewXObject);
FX_LPCBYTE pData = acc.GetData();
CFX_ByteString sStream(pData, acc.GetSize());
CFX_ByteString sTemp;
if (matrix.IsIdentity())
{
matrix.a = 1.0f;
matrix.b = 0.0f;
matrix.c = 0.0f;
matrix.d = 1.0f;
matrix.e = 0.0f;
matrix.f = 0.0f;
}
CFX_AffineMatrix m = GetMatrix(rcAnnot, rcStream, matrix);
sTemp.Format("q %f 0 0 %f %f %f cm /%s Do Q\n", m.a, m.d, m.e, m.f, sFormName.c_str());
sStream += sTemp;
pNewXObject->SetData((FX_LPCBYTE)sStream, sStream.GetLength(), FALSE, FALSE);
}
pPageDict->RemoveAt( "Annots" );
ObjectArray.RemoveAll();
RectArray.RemoveAll();
return FLATTEN_SUCCESS;
}
DLLEXPORT int STDCALL FPDFPage_Flatten(FPDF_PAGE page, int nFlag) {
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
if (!page) {
return FLATTEN_FAIL;
}
CPDF_Document* pDocument = pPage->m_pDocument;
CPDF_Dictionary* pPageDict = pPage->m_pFormDict;
if (!pDocument || !pPageDict) {
return FLATTEN_FAIL;
}
CPDF_ObjectArray ObjectArray;
CPDF_RectArray RectArray;
int iRet = FLATTEN_FAIL;
iRet = ParserAnnots(pDocument, pPageDict, &RectArray, &ObjectArray, nFlag);
if (iRet == FLATTEN_NOTHINGTODO || iRet == FLATTEN_FAIL)
return iRet;
CFX_FloatRect rcOriginalCB;
CFX_FloatRect rcMerger = CalculateRect(&RectArray);
CFX_FloatRect rcOriginalMB = pPageDict->GetRectFor("MediaBox");
if (pPageDict->KeyExist("CropBox"))
rcOriginalMB = pPageDict->GetRectFor("CropBox");
if (rcOriginalMB.IsEmpty()) {
rcOriginalMB = CFX_FloatRect(0.0f, 0.0f, 612.0f, 792.0f);
}
rcMerger.left =
rcMerger.left < rcOriginalMB.left ? rcOriginalMB.left : rcMerger.left;
rcMerger.right =
rcMerger.right > rcOriginalMB.right ? rcOriginalMB.right : rcMerger.right;
rcMerger.top =
rcMerger.top > rcOriginalMB.top ? rcOriginalMB.top : rcMerger.top;
rcMerger.bottom = rcMerger.bottom < rcOriginalMB.bottom ? rcOriginalMB.bottom
: rcMerger.bottom;
if (pPageDict->KeyExist("ArtBox"))
rcOriginalCB = pPageDict->GetRectFor("ArtBox");
else
rcOriginalCB = rcOriginalMB;
if (!rcOriginalMB.IsEmpty()) {
CPDF_Array* pMediaBox = new CPDF_Array();
pMediaBox->Add(new CPDF_Number(rcOriginalMB.left));
pMediaBox->Add(new CPDF_Number(rcOriginalMB.bottom));
pMediaBox->Add(new CPDF_Number(rcOriginalMB.right));
pMediaBox->Add(new CPDF_Number(rcOriginalMB.top));
pPageDict->SetFor("MediaBox", pMediaBox);
}
if (!rcOriginalCB.IsEmpty()) {
CPDF_Array* pCropBox = new CPDF_Array();
pCropBox->Add(new CPDF_Number(rcOriginalCB.left));
pCropBox->Add(new CPDF_Number(rcOriginalCB.bottom));
pCropBox->Add(new CPDF_Number(rcOriginalCB.right));
pCropBox->Add(new CPDF_Number(rcOriginalCB.top));
pPageDict->SetFor("ArtBox", pCropBox);
}
CPDF_Dictionary* pRes = pPageDict->GetDictFor("Resources");
if (!pRes) {
pRes = new CPDF_Dictionary(pDocument->GetByteStringPool());
pPageDict->SetFor("Resources", pRes);
}
CPDF_Stream* pNewXObject = new CPDF_Stream(
nullptr, 0, new CPDF_Dictionary(pDocument->GetByteStringPool()));
uint32_t dwObjNum = pDocument->AddIndirectObject(pNewXObject);
CPDF_Dictionary* pPageXObject = pRes->GetDictFor("XObject");
if (!pPageXObject) {
pPageXObject = new CPDF_Dictionary(pDocument->GetByteStringPool());
pRes->SetFor("XObject", pPageXObject);
}
CFX_ByteString key = "";
int nStreams = ObjectArray.GetSize();
if (nStreams > 0) {
for (int iKey = 0; /*iKey < 100*/; iKey++) {
char sExtend[5] = {};
FXSYS_itoa(iKey, sExtend, 10);
key = CFX_ByteString("FFT") + CFX_ByteString(sExtend);
if (!pPageXObject->KeyExist(key))
break;
}
}
SetPageContents(key, pPageDict, pDocument);
CPDF_Dictionary* pNewXORes = nullptr;
if (!key.IsEmpty()) {
pPageXObject->SetReferenceFor(key, pDocument, dwObjNum);
CPDF_Dictionary* pNewOXbjectDic = pNewXObject->GetDict();
pNewXORes = new CPDF_Dictionary(pDocument->GetByteStringPool());
pNewOXbjectDic->SetFor("Resources", pNewXORes);
pNewOXbjectDic->SetNameFor("Type", "XObject");
pNewOXbjectDic->SetNameFor("Subtype", "Form");
pNewOXbjectDic->SetIntegerFor("FormType", 1);
pNewOXbjectDic->SetNameFor("Name", "FRM");
CFX_FloatRect rcBBox = pPageDict->GetRectFor("ArtBox");
pNewOXbjectDic->SetRectFor("BBox", rcBBox);
}
for (int i = 0; i < nStreams; i++) {
CPDF_Dictionary* pAnnotDic = ObjectArray.GetAt(i);
if (!pAnnotDic)
continue;
CFX_FloatRect rcAnnot = pAnnotDic->GetRectFor("Rect");
rcAnnot.Normalize();
CFX_ByteString sAnnotState = pAnnotDic->GetStringFor("AS");
CPDF_Dictionary* pAnnotAP = pAnnotDic->GetDictFor("AP");
if (!pAnnotAP)
continue;
CPDF_Stream* pAPStream = pAnnotAP->GetStreamFor("N");
if (!pAPStream) {
CPDF_Dictionary* pAPDic = pAnnotAP->GetDictFor("N");
if (!pAPDic)
continue;
if (!sAnnotState.IsEmpty()) {
pAPStream = pAPDic->GetStreamFor(sAnnotState);
} else {
auto it = pAPDic->begin();
if (it != pAPDic->end()) {
CPDF_Object* pFirstObj = it->second;
if (pFirstObj) {
if (pFirstObj->IsReference())
pFirstObj = pFirstObj->GetDirect();
if (!pFirstObj->IsStream())
continue;
pAPStream = pFirstObj->AsStream();
}
}
}
}
if (!pAPStream)
continue;
CPDF_Dictionary* pAPDic = pAPStream->GetDict();
CFX_Matrix matrix = pAPDic->GetMatrixFor("Matrix");
CFX_FloatRect rcStream;
if (pAPDic->KeyExist("Rect"))
rcStream = pAPDic->GetRectFor("Rect");
else if (pAPDic->KeyExist("BBox"))
rcStream = pAPDic->GetRectFor("BBox");
if (rcStream.IsEmpty())
continue;
CPDF_Object* pObj = pAPStream;
if (pObj) {
CPDF_Dictionary* pObjDic = pObj->GetDict();
if (pObjDic) {
pObjDic->SetNameFor("Type", "XObject");
pObjDic->SetNameFor("Subtype", "Form");
}
}
CPDF_Dictionary* pXObject = pNewXORes->GetDictFor("XObject");
if (!pXObject) {
pXObject = new CPDF_Dictionary(pDocument->GetByteStringPool());
pNewXORes->SetFor("XObject", pXObject);
}
CFX_ByteString sFormName;
sFormName.Format("F%d", i);
pXObject->SetReferenceFor(sFormName, pDocument,
pDocument->AddIndirectObject(pObj));
CPDF_StreamAcc acc;
acc.LoadAllData(pNewXObject);
const uint8_t* pData = acc.GetData();
CFX_ByteString sStream(pData, acc.GetSize());
if (matrix.IsIdentity()) {
matrix.a = 1.0f;
matrix.b = 0.0f;
matrix.c = 0.0f;
matrix.d = 1.0f;
matrix.e = 0.0f;
matrix.f = 0.0f;
}
CFX_ByteString sTemp;
CFX_Matrix m = GetMatrix(rcAnnot, rcStream, matrix);
sTemp.Format("q %f 0 0 %f %f %f cm /%s Do Q\n", m.a, m.d, m.e, m.f,
sFormName.c_str());
sStream += sTemp;
pNewXObject->SetData(sStream.raw_str(), sStream.GetLength());
}
pPageDict->RemoveFor("Annots");
ObjectArray.RemoveAll();
RectArray.RemoveAll();
return FLATTEN_SUCCESS;
}
