/********************************************************************************************
> virtual UINT32 MakeBitmapFilter::GetExportMsgID()
Author: Will_Cowling (Xara Group Ltd) <*****@*****.**>
Created: 11/6/96
Returns: The id of the message to put on the progress display whilst exporting.
Purpose: Used to get the message id to be used during export.
Overides the baseclass form of the function so that during the two stage
export process it can change the message.
SeeAlso: DoExport;
********************************************************************************************/
UINT32 MakeBitmapFilter::GetExportMsgID()
{
if (GeneratingOptimisedPalette())
return _R(IDS_GENOPTPALMSGID); // "Generating optimised palette..."
else
return _R(IDS_MAKEBITMAPMSGID); // "Creating bitmap ..."
}
/********************************************************************************************
> BOOL PNGFilter::EndWriteToFile( )
Author: Neville_Humphrys (Xara Group Ltd) <*****@*****.**>
Created: 14/5/96
Inputs: -
Purpose: Cleans up after writing the bitmap data out to a file. Inherited classes
override this to write in different file formats.
This is slightly different to most other bitmap filters in that it is here
that the data actually gets written out to file, after doing the transparency
translation, if required.
Returns: TRUE if worked, FALSE if failed.
********************************************************************************************/
BOOL PNGFilter::EndWriteToFile()
{
if (GeneratingOptimisedPalette())
return TRUE; // No need to output anything
// Can reset the band number now.
m_BandNumber = 0;
PNGExportOptions* pPNGOptions = (PNGExportOptions*)GetBitmapExportOptions();
ERROR2IF(pPNGOptions == NULL, FALSE, "NULL Args");
ERROR3IF(!pPNGOptions->IS_KIND_OF(PNGExportOptions), "pPNGOptions isn't");
// Do the transparency translation just before we write out the data as a PNG.
// This involves doing a 1 bpp export of the same area and using this to work
// out which areas are transparent or not.
// Only do this if the user has requested transparency and we outputting at 8bpp
BOOL ok = TRUE;
BOOL SaveDataOut = TRUE;
if (BadExportRender)
{
// Delete our whitearea bitmap
if (pTempBitmapMask != NULL)
CCFree(pTempBitmapMask);
pTempBitmapMask = NULL;
}
// Save the data out if required. Only if we exported ok.
if (SaveDataOut && !BadExportRender)
{
if (ok)
{
// Now that we know the transparent index we can output the PNG header
ok = DestPNG.OutputPNGHeader(OutputFile, NULL, pPNGOptions->WantInterlaced(),
pPNGOptions->GetTransparencyIndex(),
pPNGOptions->GetDepth() <= 8 ? pPNGOptions->GetLogicalPalette() : NULL);
}
// Actually write the destination bitmap out to the file showing an hourglass
// and/or progress bar as we go. Always show the Exporting message.
// Need to do in one go due to interlacing
if (ok)
{
String_64 ProgressString(ExportingMsgID);
ProgressString = GetExportProgressString(OutputFile, ExportingMsgID);
BeginSlowJob(100, FALSE, &ProgressString);
DestPNG.OutputPNGBits(OutputFile, DestPNG.GetDestBitmapBits());
EndSlowJob();
}
}
ASSERT(ok);
return DestPNG.TidyUp();
}
/********************************************************************************************
> virtual UINT32 PNGFilter::GetExportMsgID()
Author: Neville_Humphrys (Xara Group Ltd) <*****@*****.**>
Created: 10/07/96
Returns: The id of the message to put on the progress display whilst exporting.
Purpose: Used to get the message id to be used during export.
Overides the baseclass form of the function so that during the two stage
export process it can change the message.
SeeAlso: DoExport; TI_GIFFilter::GetExportMsgID;
********************************************************************************************/
UINT32 PNGFilter::GetExportMsgID()
{
if (GeneratingOptimisedPalette())
return _R(IDS_GENOPTPALMSGID); // "Generating optimised palette..."
PNGExportOptions* pPNGOptions = (PNGExportOptions*)GetBitmapExportOptions();
ERROR2IF(pPNGOptions == NULL, FALSE, "NULL Args");
ERROR3IF(!pPNGOptions->IS_KIND_OF(PNGExportOptions), "pPNGOptions isn't");
// If we are exporting with transparency on and on first pass use the masking message
// otherwise use the exporting message.
if (pPNGOptions->GetSelectionType() == SELECTION && pPNGOptions->WantTransparent())
{
// Special 4 stage rendering operation
// - Render selected objects to white background
// - Render mask 1bpp
// - Render all objects
// - Save data out to disk
if (!SecondPass)
return Export2ndStageMsgID; // "Preparing mask for PNG file..."
else
return Filter::GetExportMsgID(); // "Preparing PNG file..."
}
else
{
// Special 3 stage rendering operation
// - Render objects to white background
// - Render mask 1bpp
// - Save data out to disk
if (DoingMask)
return Export2ndStageMsgID; // "Preparing mask for PNG file..."
else
return Filter::GetExportMsgID(); // "Preparing PNG file..."
}
return ExportingMsgID;
}
