UT_Error IE_ImpGraphic_BMP::_convertGraphic(UT_ByteBuf * pBB)
{
UT_Error err;
InitializePrivateClassData();
/* Read Header Data */
if ((err = Read_BMP_Header(pBB))) return err;
if ((err = Initialize_PNG())) return err;
/* Read Palette, if no palette set Header accordingly */
if(m_iBitsPerPlane < 24)
{
if ((err = Convert_BMP_Pallet(pBB))) return err;
}
else
{
UT_uint16 bitsPerChannel;
UT_uint16 colorType;
if (m_iBitsPerPlane == 24) {
bitsPerChannel = 8;
colorType = PNG_COLOR_TYPE_RGB;
} else if (m_iBitsPerPlane == 32) {
bitsPerChannel = 8;
colorType = PNG_COLOR_TYPE_RGB_ALPHA;
} else if (m_iBitsPerPlane == 48) {
bitsPerChannel = 16;
colorType = PNG_COLOR_TYPE_RGB;
} else if (m_iBitsPerPlane == 64) {
bitsPerChannel = 16;
colorType = PNG_COLOR_TYPE_RGB_ALPHA;
} else {
// wow! this is one impression graphic coming at us.
// i would have though 64 bits of RGBA glory would
// hold us for a while, but alas, we are obsolete...
return UT_ERROR;
}
png_set_IHDR ( m_pPNG,
m_pPNGInfo,
m_iWidth,
m_iHeight,
bitsPerChannel,
colorType,
PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_DEFAULT,
PNG_FILTER_TYPE_DEFAULT );
}
if ((err = Convert_BMP(pBB))) return err;
/* Clean Up Memory Used */
// FREEP(m_pPNGInfo->palette);
DELETEP(pBB);
png_destroy_write_struct(&m_pPNG, &m_pPNGInfo);
return UT_OK;
}
//
// Entry point for conversion
//
UT_Error IE_ImpGraphic_Win32Native::_convertGraphic(UT_ByteBuf * pBB, std::string& mimetype)
{
IPicture* pPicture = NULL;
IStream* stream;
HGLOBAL hG;
HBITMAP hBitmap;
OLE_HANDLE* hB;
PBITMAPINFO bi;
UT_ByteBuf bBufBMP;
UT_Error err;
/* If the system has GDI+, use it*/
if (isGDIPlusAvailable())
{
m_pBB = new UT_ByteBuf();
return GDIconvertGraphic(pBB, m_pBB, mimetype);
}
// the code below always writes out PNG's for now; we could update it to support
// native JPEG images as well, or just delete it and always use GDI+.
mimetype = "image/png";
// We need to store the incoming bytebuffer in a Windows global heap
size_t nBlockLen = pBB->getLength();
hG = GlobalAlloc(GPTR, nBlockLen);
if (!hG)
return UT_IE_NOMEMORY;
CopyMemory(hG, pBB->getPointer(0), nBlockLen);
// Create a stream from heap
HRESULT hr = CreateStreamOnHGlobal(hG,false,&stream);
if (!SUCCEEDED(hr) || !stream)
{
GlobalFree(hG);
return UT_IE_NOMEMORY;
}
hr = OleLoadPicture(stream,0,false,IID_IPicture,(void**)&pPicture);
stream->Release();
GlobalFree(hG);
if (!SUCCEEDED(hr) || !pPicture)
{
return UT_IE_UNKNOWNTYPE;
}
pPicture->get_Handle((unsigned int*)&hB);
hBitmap = (HBITMAP)CopyImage(hB,IMAGE_BITMAP,0,0,LR_COPYRETURNORG);
HWND hWnd = GetDesktopWindow();
// Create a BMP file from a BITMAP
bi = CreateBitmapInfoStruct(hBitmap);
CreateBMPFile(hWnd, bBufBMP, bi, hBitmap, GetDC(hWnd));
LocalFree ((HLOCAL)bi);
InitializePrivateClassData();
/* Read Header Data */
err = Read_BMP_Header(&bBufBMP);
/*
It's not a bitmap, then we have to rendered it into a device
context and get a bitmap from there. Case wmf graphics
*/
if (err)
{
if (err!=UT_IE_BOGUSDOCUMENT)
{
pPicture->Release();
return err;
}
long nWidth = 0;
long nHeight = 0;
long nScaleToWidth= 500;
long nScaleToHeight= 500;
RECT rc, rect;
BYTE *imagedata;
HBITMAP hBit;
HBITMAP hOld;
BITMAPINFO bmi;
HDC hWndDC = GetDC(hWnd);
HDC hMemDC = CreateCompatibleDC(hWndDC);
HBRUSH hBrush = (HBRUSH)GetCurrentObject(hMemDC, OBJ_BRUSH);
pPicture->get_Width (&nWidth);
pPicture->get_Height(&nHeight);
bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = nScaleToWidth;
bmi.bmiHeader.biHeight = nScaleToHeight;
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = 24; // as we want true-color
bmi.bmiHeader.biCompression = BI_RGB; // no compression
bmi.bmiHeader.biSizeImage = (((bmi.bmiHeader.biWidth * bmi.bmiHeader.biBitCount + 31) & ~31) >> 3) * bmi.bmiHeader.biHeight;
bmi.bmiHeader.biXPelsPerMeter = 0;
bmi.bmiHeader.biYPelsPerMeter = 0;
bmi.bmiHeader.biClrImportant = 0;
bmi.bmiHeader.biClrUsed = 0; // we are not using palette
hBit = CreateDIBSection(hMemDC,&bmi,DIB_RGB_COLORS,(void**)&imagedata,0,0);
hOld = (HBITMAP) SelectObject(hMemDC, hBit);
rect.left = 0;
rect.top = nScaleToHeight;
rect.right = nScaleToWidth;
rect.bottom = 0;
FillRect(hMemDC, &rect, hBrush);
pPicture->Render(hMemDC, 0,0, nScaleToWidth, nScaleToHeight, 0, nHeight,
nWidth, -nHeight, &rc);
hBit = (HBITMAP)SelectObject(hMemDC, hOld);
bi = CreateBitmapInfoStruct(hBit);
CreateBMPFile(hWnd, bBufBMP, &bmi, hBit, hMemDC);
LocalFree ((HLOCAL)bi);
DeleteDC(hMemDC);
DeleteDC(hWndDC);
DeleteObject(hBrush);
DeleteObject(hBit);
err = Read_BMP_Header(&bBufBMP);
if (err)
{
pPicture->Release();
return err;
}
}
pPicture->Release();
if ((err = Initialize_PNG()))
{
return err;
}
/* Read Palette, if no palette set Header accordingly */
if(m_iBitsPerPlane < 24)
{
if ((err = Convert_BMP_Palette(&bBufBMP)))
return err;
}
else
{
UT_uint16 bitsPerChannel;
UT_uint16 colorType;
if (m_iBitsPerPlane == 24) {
bitsPerChannel = 8;
colorType = PNG_COLOR_TYPE_RGB;
} else if (m_iBitsPerPlane == 32) {
bitsPerChannel = 8;
colorType = PNG_COLOR_TYPE_RGB_ALPHA;
} else if (m_iBitsPerPlane == 48) {
bitsPerChannel = 16;
colorType = PNG_COLOR_TYPE_RGB;
} else if (m_iBitsPerPlane == 64) {
bitsPerChannel = 16;
colorType = PNG_COLOR_TYPE_RGB_ALPHA;
} else {
return UT_ERROR;
}
png_set_IHDR ( m_pPNG,
m_pPNGInfo,
m_iWidth,
m_iHeight,
bitsPerChannel,
colorType,
PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_DEFAULT,
PNG_FILTER_TYPE_DEFAULT );
}
if ((err = Convert_BMP(&bBufBMP)))
{
return err;
}
/* Clean Up Memory Used */
FREEP(m_pPNGInfo->palette);
png_destroy_write_struct(&m_pPNG, &m_pPNGInfo);
return UT_OK;
}
