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optimization

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This commit is contained in:
Kulikova Svetlana
2021-07-21 18:04:44 +03:00
parent 9ec56fb323
commit 6f33e529e5
7 changed files with 79 additions and 20 deletions
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61
DjVuFile/DjVuFileImplementation.cpp
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@ -115,6 +115,22 @@ bool CDjVuFileImplementation::LoadFromFile(const std::wstring& wsS
return true;
}
bool CDjVuFileImplementation::LoadFromMemory(BYTE* data, DWORD length, const std::wstring& wsXmlOptions)
{
m_pDoc = NULL;
try
{
GP<ByteStream> stream = ByteStream::create(data, (size_t)length);
m_pDoc = DjVuDocument::create(stream);
m_pDoc->wait_get_pages_num();
}
catch (...)
{
return false;
}
return true;
}
void CDjVuFileImplementation::Close()
{
}
@ -202,6 +218,51 @@ void CDjVuFileImplementation::DrawPageOnRenderer(IRenderer* pRende
// белая страница
}
}
BYTE* CDjVuFileImplementation::ConvertToPixels(int nPageIndex, const int& nRasterW, const int& nRasterH)
{
if (!m_pApplicationFonts)
return NULL;
NSFonts::IFontManager *pFontManager = m_pApplicationFonts->GenerateFontManager();
NSFonts::IFontsCache* pFontCache = NSFonts::NSFontCache::Create();
pFontCache->SetStreams(m_pApplicationFonts->GetStreams());
pFontManager->SetOwnerCache(pFontCache);
NSGraphics::IGraphicsRenderer* pRenderer = NSGraphics::Create();
pRenderer->SetFontManager(pFontManager);
double dPageDpiX, dPageDpiY;
double dWidth, dHeight;
GetPageInfo(nPageIndex, &dWidth, &dHeight, &dPageDpiX, &dPageDpiX);
int nWidth = (nRasterW > 0) ? nRasterW : ((int)dWidth * 96 / dPageDpiX);
int nHeight = (nRasterH > 0) ? nRasterH : ((int)dHeight * 96 / dPageDpiX);
BYTE* pBgraData = new BYTE[nWidth * nHeight * 4];
if (!pBgraData)
return NULL;
memset(pBgraData, 0xff, nWidth * nHeight * 4);
CBgraFrame oFrame;
oFrame.put_Data(pBgraData);
oFrame.put_Width(nWidth);
oFrame.put_Height(nHeight);
oFrame.put_Stride(-4 * nWidth);
pRenderer->CreateFromBgraFrame(&oFrame);
pRenderer->SetSwapRGB(true);
pRenderer->put_Width(dWidth);
pRenderer->put_Height(dHeight);
bool bBreak = false;
DrawPageOnRenderer(pRenderer, nPageIndex, &bBreak);
RELEASEINTERFACE(pFontManager);
RELEASEOBJECT(pRenderer);
oFrame.ClearNoAttack();
return pBgraData;
}
void CDjVuFileImplementation::ConvertToRaster(int nPageIndex, const std::wstring& wsDstPath, int nImageType, const int& nRasterW, const int& nRasterH)
{
if (!m_pApplicationFonts)