diff options
Diffstat (limited to 'fpdfsdk/src/fpdf_flatten.cpp')
| -rw-r--r-- | fpdfsdk/src/fpdf_flatten.cpp | 965 |
1 files changed, 471 insertions, 494 deletions
diff --git a/fpdfsdk/src/fpdf_flatten.cpp b/fpdfsdk/src/fpdf_flatten.cpp index 988d7f46b5..210df63d3e 100644 --- a/fpdfsdk/src/fpdf_flatten.cpp +++ b/fpdfsdk/src/fpdf_flatten.cpp @@ -13,537 +13,514 @@ typedef CFX_ArrayTemplate<CPDF_Rect> CPDF_RectArray; enum FPDF_TYPE { MAX, MIN }; enum FPDF_VALUE { TOP, LEFT, RIGHT, BOTTOM }; -FX_BOOL IsValiableRect(CPDF_Rect rect, CPDF_Rect rcPage) -{ - if ( rect.left - rect.right > 0.000001f || - rect.bottom - rect.top > 0.000001f) - return FALSE; - - if (rect.left == 0.0f && - rect.top == 0.0f && - rect.right == 0.0f && - rect.bottom == 0.0f) - return FALSE; - - if (!rcPage.IsEmpty()) - { - if (rect.left - rcPage.left < -10.000001f || - rect.right - rcPage.right > 10.000001f || - rect.top - rcPage.top > 10.000001f || - rect.bottom - rcPage.bottom < -10.000001f) - return FALSE; - } - - return TRUE; +FX_BOOL IsValiableRect(CPDF_Rect rect, CPDF_Rect rcPage) { + if (rect.left - rect.right > 0.000001f || rect.bottom - rect.top > 0.000001f) + return FALSE; + + if (rect.left == 0.0f && rect.top == 0.0f && rect.right == 0.0f && + rect.bottom == 0.0f) + return FALSE; + + if (!rcPage.IsEmpty()) { + if (rect.left - rcPage.left < -10.000001f || + rect.right - rcPage.right > 10.000001f || + rect.top - rcPage.top > 10.000001f || + rect.bottom - rcPage.bottom < -10.000001f) + return FALSE; + } + + return TRUE; } +FX_BOOL GetContentsRect(CPDF_Document* pDoc, + CPDF_Dictionary* pDict, + CPDF_RectArray* pRectArray) { + CPDF_Page* pPDFPage = new CPDF_Page; + pPDFPage->Load(pDoc, pDict, FALSE); + pPDFPage->ParseContent(); -FX_BOOL GetContentsRect( CPDF_Document * pDoc, CPDF_Dictionary* pDict, CPDF_RectArray * pRectArray ) -{ - CPDF_Page* pPDFPage = new CPDF_Page; - pPDFPage->Load( pDoc, pDict, FALSE ); - pPDFPage->ParseContent(); + FX_POSITION pos = pPDFPage->GetFirstObjectPosition(); - FX_POSITION pos = pPDFPage->GetFirstObjectPosition(); + while (pos) { + CPDF_PageObject* pPageObject = pPDFPage->GetNextObject(pos); + if (!pPageObject) + continue; - while (pos) - { - CPDF_PageObject* pPageObject = pPDFPage->GetNextObject(pos); - if (!pPageObject)continue; + CPDF_Rect rc; + rc.left = pPageObject->m_Left; + rc.right = pPageObject->m_Right; + rc.bottom = pPageObject->m_Bottom; + rc.top = pPageObject->m_Top; - CPDF_Rect rc; - rc.left = pPageObject->m_Left; - rc.right = pPageObject->m_Right; - rc.bottom = pPageObject->m_Bottom; - rc.top = pPageObject->m_Top; + if (IsValiableRect(rc, pDict->GetRect("MediaBox"))) { + pRectArray->Add(rc); + } + } - if (IsValiableRect(rc, pDict->GetRect("MediaBox"))) - { - pRectArray->Add(rc); - } - } + delete pPDFPage; + return TRUE; +} - delete pPDFPage; - return TRUE; +void ParserStream(CPDF_Dictionary* pPageDic, + CPDF_Dictionary* pStream, + CPDF_RectArray* pRectArray, + CPDF_ObjectArray* pObjectArray) { + if (!pStream) + return; + CPDF_Rect rect; + if (pStream->KeyExist("Rect")) + rect = pStream->GetRect("Rect"); + else if (pStream->KeyExist("BBox")) + rect = pStream->GetRect("BBox"); + + if (IsValiableRect(rect, pPageDic->GetRect("MediaBox"))) + pRectArray->Add(rect); + + pObjectArray->Add(pStream); } +int ParserAnnots(CPDF_Document* pSourceDoc, + CPDF_Dictionary* pPageDic, + CPDF_RectArray* pRectArray, + CPDF_ObjectArray* pObjectArray, + int nUsage) { + if (!pSourceDoc || !pPageDic) + return FLATTEN_FAIL; + + GetContentsRect(pSourceDoc, pPageDic, pRectArray); + CPDF_Array* pAnnots = pPageDic->GetArray("Annots"); + if (!pAnnots) + return FLATTEN_NOTHINGTODO; + + FX_DWORD dwSize = pAnnots->GetCount(); + for (int i = 0; i < (int)dwSize; i++) { + CPDF_Object* pObj = pAnnots->GetElementValue(i); + if (!pObj || pObj->GetType() != PDFOBJ_DICTIONARY) + continue; + + CPDF_Dictionary* pAnnotDic = (CPDF_Dictionary*)pObj; + CFX_ByteString sSubtype = pAnnotDic->GetString("Subtype"); + if (sSubtype == "Popup") + continue; + + int nAnnotFlag = pAnnotDic->GetInteger("F"); + if (nAnnotFlag & ANNOTFLAG_HIDDEN) + continue; + + if (nUsage == FLAT_NORMALDISPLAY) { + if (nAnnotFlag & ANNOTFLAG_INVISIBLE) + continue; + + ParserStream(pPageDic, pAnnotDic, pRectArray, pObjectArray); + } else { + if (nAnnotFlag & ANNOTFLAG_PRINT) + ParserStream(pPageDic, pAnnotDic, pRectArray, pObjectArray); + } + } + return FLATTEN_SUCCESS; +} -void ParserStream( CPDF_Dictionary * pPageDic, CPDF_Dictionary* pStream, CPDF_RectArray * pRectArray, CPDF_ObjectArray * pObjectArray ) -{ - if (!pStream)return; - CPDF_Rect rect; - if (pStream->KeyExist("Rect")) - rect = pStream->GetRect("Rect"); - else if (pStream->KeyExist("BBox")) - rect = pStream->GetRect("BBox"); +FX_FLOAT GetMinMaxValue(CPDF_RectArray& array, + FPDF_TYPE type, + FPDF_VALUE value) { + int nRects = array.GetSize(); + FX_FLOAT fRet = 0.0f; - if (IsValiableRect(rect, pPageDic->GetRect("MediaBox"))) - pRectArray->Add(rect); + if (nRects <= 0) + return 0.0f; - pObjectArray->Add(pStream); -} + 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; -int ParserAnnots( CPDF_Document* pSourceDoc, CPDF_Dictionary * pPageDic, CPDF_RectArray * pRectArray, CPDF_ObjectArray * pObjectArray, int nUsage) -{ - if (!pSourceDoc || !pPageDic) - return FLATTEN_FAIL; + break; + } + case RIGHT: { + for (int i = 0; i < nRects; i++) + pArray[i] = CPDF_Rect(array.GetAt(i)).right; - GetContentsRect( pSourceDoc, pPageDic, pRectArray ); - CPDF_Array* pAnnots = pPageDic->GetArray("Annots"); - if (!pAnnots) - return FLATTEN_NOTHINGTODO; + break; + } + case BOTTOM: { + for (int i = 0; i < nRects; i++) + pArray[i] = CPDF_Rect(array.GetAt(i)).bottom; - FX_DWORD dwSize = pAnnots->GetCount(); - for (int i = 0; i < (int)dwSize; i++) - { - CPDF_Object* pObj = pAnnots->GetElementValue(i); - if (!pObj || pObj->GetType() != PDFOBJ_DICTIONARY) - continue; + 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; +} - CPDF_Dictionary* pAnnotDic = (CPDF_Dictionary*)pObj; - CFX_ByteString sSubtype = pAnnotDic->GetString("Subtype"); - if (sSubtype == "Popup") - continue; +CPDF_Rect CalculateRect(CPDF_RectArray* pRectArray) { + CPDF_Rect rcRet; - int nAnnotFlag = pAnnotDic->GetInteger("F"); - if (nAnnotFlag & ANNOTFLAG_HIDDEN) - continue; + rcRet.left = GetMinMaxValue(*pRectArray, MIN, LEFT); + rcRet.top = GetMinMaxValue(*pRectArray, MAX, TOP); + rcRet.right = GetMinMaxValue(*pRectArray, MAX, RIGHT); + rcRet.bottom = GetMinMaxValue(*pRectArray, MIN, BOTTOM); - if(nUsage == FLAT_NORMALDISPLAY) - { - if (nAnnotFlag & ANNOTFLAG_INVISIBLE) - continue; + return rcRet; +} - ParserStream( pPageDic, pAnnotDic, pRectArray, pObjectArray ); - } - else - { - if (nAnnotFlag & ANNOTFLAG_PRINT) - ParserStream( pPageDic, pAnnotDic, pRectArray, pObjectArray ); - } +void SetPageContents(CFX_ByteString key, + CPDF_Dictionary* pPage, + CPDF_Document* pDocument) { + CPDF_Object* pContentsObj = pPage->GetStream("Contents"); + if (!pContentsObj) { + pContentsObj = pPage->GetArray("Contents"); + } + + if (!pContentsObj) { + // Create a new contents dictionary + if (!key.IsEmpty()) { + CPDF_Stream* pNewContents = new CPDF_Stream(NULL, 0, new CPDF_Dictionary); + pPage->SetAtReference("Contents", pDocument, + pDocument->AddIndirectObject(pNewContents)); + + CFX_ByteString sStream; + sStream.Format("q 1 0 0 1 0 0 cm /%s Do Q", key.c_str()); + pNewContents->SetData((const uint8_t*)sStream, sStream.GetLength(), FALSE, + FALSE); + } + return; + } + + int iType = pContentsObj->GetType(); + CPDF_Array* pContentsArray = NULL; + + switch (iType) { + case PDFOBJ_STREAM: { + pContentsArray = new CPDF_Array; + CPDF_Stream* pContents = (CPDF_Stream*)pContentsObj; + FX_DWORD dwObjNum = pDocument->AddIndirectObject(pContents); + CPDF_StreamAcc acc; + acc.LoadAllData(pContents); + CFX_ByteString sStream = "q\n"; + CFX_ByteString sBody = + CFX_ByteString((const FX_CHAR*)acc.GetData(), acc.GetSize()); + sStream = sStream + sBody + "\nQ"; + pContents->SetData((const uint8_t*)sStream, sStream.GetLength(), FALSE, + FALSE); + pContentsArray->AddReference(pDocument, dwObjNum); + break; + } + + case PDFOBJ_ARRAY: { + pContentsArray = (CPDF_Array*)pContentsObj; + break; } - return FLATTEN_SUCCESS; + default: + break; + } + + if (!pContentsArray) + return; + + FX_DWORD dwObjNum = pDocument->AddIndirectObject(pContentsArray); + pPage->SetAtReference("Contents", pDocument, dwObjNum); + + if (!key.IsEmpty()) { + CPDF_Stream* pNewContents = new CPDF_Stream(NULL, 0, new CPDF_Dictionary); + dwObjNum = pDocument->AddIndirectObject(pNewContents); + pContentsArray->AddReference(pDocument, dwObjNum); + + CFX_ByteString sStream; + sStream.Format("q 1 0 0 1 0 0 cm /%s Do Q", key.c_str()); + pNewContents->SetData((const uint8_t*)sStream, sStream.GetLength(), FALSE, + FALSE); + } } +CFX_AffineMatrix GetMatrix(CPDF_Rect rcAnnot, + CPDF_Rect rcStream, + CFX_AffineMatrix matrix) { + if (rcStream.IsEmpty()) + return CFX_AffineMatrix(); + + matrix.TransformRect(rcStream); + rcStream.Normalize(); -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; + FX_FLOAT a = rcAnnot.Width() / rcStream.Width(); + FX_FLOAT d = rcAnnot.Height() / rcStream.Height(); + + FX_FLOAT e = rcAnnot.left - rcStream.left * a; + FX_FLOAT f = rcAnnot.bottom - rcStream.bottom * d; + return CFX_AffineMatrix(a, 0, 0, d, e, f); } -CPDF_Rect CalculateRect( CPDF_RectArray * pRectArray ) -{ +void GetOffset(FX_FLOAT& fa, + FX_FLOAT& fd, + FX_FLOAT& fe, + FX_FLOAT& ff, + CPDF_Rect rcAnnot, + CPDF_Rect rcStream, + CFX_AffineMatrix matrix) { + FX_FLOAT fStreamWidth = 0.0f; + FX_FLOAT fStreamHeight = 0.0f; + + if (matrix.a != 0 && matrix.d != 0) { + fStreamWidth = rcStream.right - rcStream.left; + fStreamHeight = rcStream.top - rcStream.bottom; + } else { + fStreamWidth = rcStream.top - rcStream.bottom; + fStreamHeight = rcStream.right - rcStream.left; + } + + FX_FLOAT x1 = + matrix.a * rcStream.left + matrix.c * rcStream.bottom + matrix.e; + FX_FLOAT y1 = + matrix.b * rcStream.left + matrix.d * rcStream.bottom + matrix.f; + FX_FLOAT x2 = matrix.a * rcStream.left + matrix.c * rcStream.top + matrix.e; + FX_FLOAT y2 = matrix.b * rcStream.left + matrix.d * rcStream.top + matrix.f; + FX_FLOAT x3 = + matrix.a * rcStream.right + matrix.c * rcStream.bottom + matrix.e; + FX_FLOAT y3 = + matrix.b * rcStream.right + matrix.d * rcStream.bottom + matrix.f; + FX_FLOAT x4 = matrix.a * rcStream.right + matrix.c * rcStream.top + matrix.e; + FX_FLOAT y4 = matrix.b * rcStream.right + matrix.d * rcStream.top + matrix.f; + + FX_FLOAT left = FX_MIN(FX_MIN(x1, x2), FX_MIN(x3, x4)); + FX_FLOAT bottom = FX_MIN(FX_MIN(y1, y2), FX_MIN(y3, y4)); + + fa = (rcAnnot.right - rcAnnot.left) / fStreamWidth; + fd = (rcAnnot.top - rcAnnot.bottom) / fStreamHeight; + fe = rcAnnot.left - left * fa; + ff = rcAnnot.bottom - bottom * fd; +} - CPDF_Rect rcRet; +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_NOTHINGTODO || iRet == FLATTEN_FAIL) + return iRet; + + 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 = 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->SetAt("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->SetAt("ArtBox", pCropBox); + } + + CPDF_Dictionary* pRes = pPageDict->GetDict("Resources"); + if (!pRes) { + pRes = new CPDF_Dictionary; + pPageDict->SetAt("Resources", pRes); + } + + CPDF_Stream* pNewXObject = new CPDF_Stream(NULL, 0, new CPDF_Dictionary); + FX_DWORD dwObjNum = pDocument->AddIndirectObject(pNewXObject); + CPDF_Dictionary* pPageXObject = pRes->GetDict("XObject"); + if (!pPageXObject) { + pPageXObject = 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] = {}; + 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 = 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; + } + } + } + } - rcRet.left = GetMinMaxValue(*pRectArray, MIN, LEFT); - rcRet.top = GetMinMaxValue(*pRectArray, MAX, TOP); - rcRet.right = GetMinMaxValue(*pRectArray, MAX, RIGHT); - rcRet.bottom = GetMinMaxValue(*pRectArray, MIN, BOTTOM); + if (!pAPStream) + continue; - return rcRet; -} + 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"); -void SetPageContents(CFX_ByteString key, CPDF_Dictionary* pPage, CPDF_Document* pDocument) -{ - CPDF_Object* pContentsObj = pPage->GetStream("Contents"); - if (!pContentsObj) - { - pContentsObj = pPage->GetArray("Contents"); - } - - if (!pContentsObj) - { - //Create a new contents dictionary - if (!key.IsEmpty()) - { - CPDF_Stream* pNewContents = new CPDF_Stream(NULL, 0, new CPDF_Dictionary); - pPage->SetAtReference("Contents", pDocument, pDocument->AddIndirectObject(pNewContents)); - - CFX_ByteString sStream; - sStream.Format("q 1 0 0 1 0 0 cm /%s Do Q", key.c_str()); - pNewContents->SetData((const uint8_t*)sStream, sStream.GetLength(), FALSE, FALSE); - } - return; - } - - int iType = pContentsObj->GetType(); - CPDF_Array* pContentsArray = NULL; - - switch(iType) - { - case PDFOBJ_STREAM: - { - pContentsArray = new CPDF_Array; - CPDF_Stream* pContents = (CPDF_Stream*)pContentsObj; - FX_DWORD dwObjNum = pDocument->AddIndirectObject(pContents); - CPDF_StreamAcc acc; - acc.LoadAllData(pContents); - CFX_ByteString sStream = "q\n"; - CFX_ByteString sBody = CFX_ByteString((const FX_CHAR*)acc.GetData(), acc.GetSize()); - sStream = sStream + sBody + "\nQ"; - pContents->SetData((const uint8_t*)sStream, sStream.GetLength(), FALSE, FALSE); - pContentsArray->AddReference(pDocument, dwObjNum); - break; - } - - case PDFOBJ_ARRAY: - { - pContentsArray = (CPDF_Array*)pContentsObj; - break; - } - default: - break; - } - - if (!pContentsArray)return; - - FX_DWORD dwObjNum = pDocument->AddIndirectObject(pContentsArray); - pPage->SetAtReference("Contents", pDocument, dwObjNum); - - if (!key.IsEmpty()) - { - CPDF_Stream* pNewContents = new CPDF_Stream(NULL, 0, new CPDF_Dictionary); - dwObjNum = pDocument->AddIndirectObject(pNewContents); - pContentsArray->AddReference(pDocument, dwObjNum); - - CFX_ByteString sStream; - sStream.Format("q 1 0 0 1 0 0 cm /%s Do Q", key.c_str()); - pNewContents->SetData((const uint8_t*)sStream, sStream.GetLength(), FALSE, FALSE); - } -} + if (rcStream.IsEmpty()) + continue; -CFX_AffineMatrix GetMatrix(CPDF_Rect rcAnnot, CPDF_Rect rcStream, CFX_AffineMatrix matrix) -{ - if(rcStream.IsEmpty()) - return CFX_AffineMatrix(); + CPDF_Object* pObj = pAPStream; - matrix.TransformRect(rcStream); - rcStream.Normalize(); + if (pObj) { + CPDF_Dictionary* pObjDic = pObj->GetDict(); + if (pObjDic) { + pObjDic->SetAtName("Type", "XObject"); + pObjDic->SetAtName("Subtype", "Form"); + } + } - FX_FLOAT a = rcAnnot.Width()/rcStream.Width(); - FX_FLOAT d = rcAnnot.Height()/rcStream.Height(); + CPDF_Dictionary* pXObject = pNewXORes->GetDict("XObject"); + if (!pXObject) { + pXObject = new CPDF_Dictionary; + pNewXORes->SetAt("XObject", pXObject); + } - FX_FLOAT e = rcAnnot.left - rcStream.left * a; - FX_FLOAT f = rcAnnot.bottom - rcStream.bottom * d; - return CFX_AffineMatrix(a, 0, 0, d, e, f); -} + 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); + + const uint8_t* 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; + } -void GetOffset(FX_FLOAT& fa, FX_FLOAT& fd, FX_FLOAT& fe, FX_FLOAT& ff, CPDF_Rect rcAnnot, CPDF_Rect rcStream, CFX_AffineMatrix matrix) -{ - FX_FLOAT fStreamWidth = 0.0f; - FX_FLOAT fStreamHeight = 0.0f; - - - - if (matrix.a != 0 && matrix.d != 0) - { - fStreamWidth = rcStream.right - rcStream.left; - fStreamHeight = rcStream.top - rcStream.bottom; - } - else - { - fStreamWidth = rcStream.top - rcStream.bottom; - fStreamHeight = rcStream.right - rcStream.left; - } - - FX_FLOAT x1 = matrix.a * rcStream.left + matrix.c * rcStream.bottom + matrix.e; - FX_FLOAT y1 = matrix.b * rcStream.left + matrix.d * rcStream.bottom + matrix.f; - FX_FLOAT x2 = matrix.a * rcStream.left + matrix.c * rcStream.top + matrix.e; - FX_FLOAT y2 = matrix.b * rcStream.left + matrix.d * rcStream.top + matrix.f; - FX_FLOAT x3 = matrix.a * rcStream.right + matrix.c * rcStream.bottom + matrix.e; - FX_FLOAT y3 = matrix.b * rcStream.right + matrix.d * rcStream.bottom + matrix.f; - FX_FLOAT x4 = matrix.a * rcStream.right + matrix.c * rcStream.top + matrix.e; - FX_FLOAT y4 = matrix.b * rcStream.right + matrix.d * rcStream.top + matrix.f; - - FX_FLOAT left = FX_MIN(FX_MIN(x1, x2), FX_MIN(x3, x4)); - FX_FLOAT bottom = FX_MIN(FX_MIN(y1, y2), FX_MIN(y3, y4)); - - fa = (rcAnnot.right - rcAnnot.left)/fStreamWidth; - fd = (rcAnnot.top - rcAnnot.bottom)/fStreamHeight; - fe = rcAnnot.left - left * fa; - ff = rcAnnot.bottom - bottom * fd; -} + 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((const uint8_t*)sStream, sStream.GetLength(), FALSE, + FALSE); + } + pPageDict->RemoveAt("Annots"); + ObjectArray.RemoveAll(); + RectArray.RemoveAll(); -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_NOTHINGTODO || iRet == FLATTEN_FAIL) - return iRet; - - 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 = 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->SetAt("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->SetAt("ArtBox", pCropBox); - } - - CPDF_Dictionary* pRes = pPageDict->GetDict("Resources"); - if (!pRes) - { - pRes = new CPDF_Dictionary; - pPageDict->SetAt("Resources", pRes ); - } - - CPDF_Stream* pNewXObject = new CPDF_Stream(NULL, 0, new CPDF_Dictionary); - FX_DWORD dwObjNum = pDocument->AddIndirectObject(pNewXObject); - CPDF_Dictionary* pPageXObject = pRes->GetDict("XObject"); - if (!pPageXObject) - { - pPageXObject = 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] = {}; - 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 = 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 = 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); - - const uint8_t* 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((const uint8_t*)sStream, sStream.GetLength(), FALSE, FALSE); - } - pPageDict->RemoveAt( "Annots" ); - - ObjectArray.RemoveAll(); - RectArray.RemoveAll(); - - return FLATTEN_SUCCESS; + return FLATTEN_SUCCESS; } |