void CCatalog::AddPageLabel(unsigned int unPageNum, CDictObject* pPageLabel)
{
CDictObject* pLabels = (CDictObject*)Get("PageLabels");
if (!pLabels)
{
pLabels = new CDictObject();
if (!pLabels)
return;
Add("PageLabels", pLabels);
}
CArrayObject* pNums = (CArrayObject*)pLabels->Get("Nums");
if (!pNums)
{
pNums = new CArrayObject();
if (!pNums)
return;
pLabels->Add("Nums", pNums);
}
pNums->Add(unPageNum);
pNums->Add(pPageLabel);
}
void CImageDict::LoadMask(NSImages::CPixJbig2* pPix, unsigned int unWidth, unsigned int unHeight)
{
CImageDict* pMask = new CImageDict(m_pXref, m_pDocument);
if (!pMask)
return;
pMask->SetStream(m_pXref, new CMemoryStream());
CJbig2Global* pJbig2Global = m_pDocument->GetJbig2Global();
pJbig2Global->AddImage(pPix, pMask->GetStream());
pMask->Add("Type", "XObject");
pMask->Add("Subtype", "Image");
pMask->Add("Width", unWidth);
pMask->Add("Height", unHeight);
pMask->Add("BitsPerComponent", 1);
pMask->Add("ImageMask", true);
pMask->SetFilter(STREAM_FILTER_JBIG2_DECODE);
CArrayObject* pDecodeParams = new CArrayObject();
CDictObject* pParams = new CDictObject();
pDecodeParams->Add(pParams);
pParams->Add("JBIG2Globals", pJbig2Global);
pMask->Add("DecodeParms", pDecodeParams);
Add("Mask", pMask);
}
void CImageDict::LoadCCITT4(const wchar_t* wsTempFile, unsigned int unWidth, unsigned int unHeight)
{
CImageFileStream* pStream = new CImageFileStream();
if (!pStream)
return;
pStream->OpenFile(wsTempFile);
SetStream(m_pXref, pStream);
Add("Type", "XObject");
Add("Subtype", "Image");
Add("Height", unHeight);
Add("Width", unWidth);
Add("ColorSpace", "DeviceGray");
Add("BitsPerComponent", 1);
CArrayObject* pDecodeParams = new CArrayObject();
CDictObject* pParams = new CDictObject();
pDecodeParams->Add(pParams);
pParams->Add("K", 0);
pParams->Add("Columns", unWidth);
pParams->Add("EncodedByteAlign", true);
Add("DecodeParams", pDecodeParams);
SetFilter(STREAM_FILTER_CCITT_DECODE);
}
void CImageDict::LoadBW(NSImages::CPixJbig2* pPix, unsigned int unWidth, unsigned int unHeight)
{
SetStream(m_pXref, new CMemoryStream());
CJbig2Global* pJbig2Global = m_pDocument->GetJbig2Global();
pJbig2Global->AddImage(pPix, GetStream());
Add("Type", "XObject");
Add("Subtype", "Image");
Add("Height", unHeight);
Add("Width", unWidth);
Add("ColorSpace", "DeviceGray");
Add("BitsPerComponent", 1);
SetFilter(STREAM_FILTER_JBIG2_DECODE);
CArrayObject* pDecodeParams = new CArrayObject();
CDictObject* pParams = new CDictObject();
pDecodeParams->Add(pParams);
pParams->Add("JBIG2Globals", pJbig2Global);
Add("DecodeParms", pDecodeParams);
}
CDictObject* CDocument::CreatePageLabel(EPageNumStyle eStyle, unsigned int unFirstPage, const char* sPrefix)
{
CDictObject* pLabel = new CDictObject();
if (!pLabel)
return NULL;
eStyle = std::min(std::max(eStyle, pagenumstyle_Min), pagenumstyle_Max);
switch (eStyle)
{
case pagenumstyle_UpperRoman: pLabel->Add("S", "R"); break;
case pagenumstyle_LowerRoman: pLabel->Add("S", "r"); break;
case pagenumstyle_UpperLetters: pLabel->Add("S", "A"); break;
case pagenumstyle_LowerLetters: pLabel->Add("S", "a"); break;
case pagenumstyle_Decimal: pLabel->Add("S", "D"); break;
}
if (sPrefix && 0 != sPrefix[0])
pLabel->Add("P", new CStringObject(sPrefix));
if (0 != unFirstPage)
pLabel->Add("St", unFirstPage);
return pLabel;
}
CShading* CDocument::CreateShading(CPage* pPage, double *pPattern, bool bAxial, unsigned char* pColors, unsigned char* pAlphas, double* pPoints, int nCount, CExtGrState*& pExtGrState)
{
pExtGrState = NULL;
bool bNeedAlpha = false;
unsigned char* pA = new unsigned char[3 * nCount];
if (!pA)
return NULL;
for (int nIndex = 0; nIndex < nCount; nIndex++)
{
pA[3 * nIndex + 0] = pAlphas[nIndex];
pA[3 * nIndex + 1] = pAlphas[nIndex];
pA[3 * nIndex + 2] = pAlphas[nIndex];
if (255 != pAlphas[nIndex])
bNeedAlpha = true;
}
if (!bNeedAlpha)
{
delete[] pA;
if (bAxial)
return CreateAxialShading(pPattern[0], pPattern[1], pPattern[2], pPattern[3], pColors, pPoints, nCount);
else
return CreateRadialShading(pPattern[0], pPattern[1], pPattern[2], pPattern[3], pPattern[4], pPattern[5], pColors, pPoints, nCount);
}
// Создаем 2 shading-объекта, один цветной RGB, второй серый со значениями альфа-канала
CShading* pColorShading = NULL;
CShading* pAlphaShading = NULL;
if (bAxial)
{
pColorShading = CreateAxialShading(pPattern[0], pPattern[1], pPattern[2], pPattern[3], pColors, pPoints, nCount);
pAlphaShading = CreateAxialShading(pPattern[0], pPattern[1], pPattern[2], pPattern[3], pA, pPoints, nCount);
}
else
{
pColorShading = CreateRadialShading(pPattern[0], pPattern[1], pPattern[2], pPattern[3], pPattern[4], pPattern[5], pColors, pPoints, nCount);
pAlphaShading = CreateRadialShading(pPattern[0], pPattern[1], pPattern[2], pPattern[3], pPattern[4], pPattern[5], pA, pPoints, nCount);
}
delete[] pA;
if (!m_pTransparencyGroup)
{
m_pTransparencyGroup = new CDictObject();
m_pTransparencyGroup->Add("Type", "Group");
m_pTransparencyGroup->Add("S", "Transparency");
m_pTransparencyGroup->Add("CS", "DeviceRGB");
}
pPage->Add("Group", m_pTransparencyGroup);
double dWidth = pPage->GetWidth();
double dHeight = pPage->GetHeight();
// Создаем графический объект, который будет альфа-маской
CDictObject* pXObject = new CDictObject(m_pXref);
pXObject->Add("Type", "XObject");
pXObject->Add("Subtype", "Form");
pXObject->Add("BBox", CArrayObject::CreateBox(0, 0, dWidth, dHeight));
pXObject->Add("Group", m_pTransparencyGroup);
CDictObject* pResources = new CDictObject();
pXObject->Add("Resources", pResources);
CDictObject* pResShadings = new CDictObject();
pResources->Add("Shading", pResShadings);
pResShadings->Add("S1", pAlphaShading);
CStream* pStream = pXObject->GetStream();
pStream->WriteStr("0 0 ");
pStream->WriteReal(dWidth);
pStream->WriteChar(' ');
pStream->WriteReal(dHeight);
pStream->WriteStr(" re\012W\012\n\012/S1 sh\012");
// Создаем обект-маску для графического состояние
CDictObject* pMask = new CDictObject();
m_pXref->Add(pMask);
pMask->Add("Type", "Mask");
pMask->Add("S", "Luminosity");
pMask->Add("G", pXObject);
if (!IsPDFA())
{
// Создаем ExtGState объект, в который мы запишем альфа-маску
pExtGrState = new CExtGrState(m_pXref);
pExtGrState->Add("BM", "Normal");
pExtGrState->Add("ca", 1);
pExtGrState->Add("SMask", pMask);
}
return pColorShading;
}
