Camelot: PreviewFilterGIF Class Reference

00451                                    : TI_GIFFilter()
00452 {
00453     ImportMsgID = _R(IDN_IMPORTMSG_GIF);
00454     
00455     // Set it up so that it can neither Import or Export so that it does not appear in the
00456     // Filter menus.
00457     Flags.CanImport = FALSE;
00458     Flags.CanExport = FALSE;
00459     FilterID = FILTERID_PREVIEW_GIF;
00460 
00461     ExportRegion = NULL;
00462 
00463     ExportMsgID = _R(IDS_BUILDINGPREVIEW);
00464     ExportingMsgID = _R(IDS_BUILDINGPREVIEW);
00465 }

00514 {
00515     INT32 OldPreviewSize = PreviewFilter::PreviewBitmapSize;
00516     // Set the Preview to be just over an inch accross
00517     PreviewFilter::PreviewBitmapSize = 96000;
00518 
00519     // set ourselves up - this flags the BaseBitmapFilter to do resizing, which needs to be
00520     // done there because of Accusoft.
00521     SetPreviewBitmap(TRUE);
00522 
00523     // Export the Preview to the file by doing what our base class does
00524     BOOL ok = TI_GIFFilter::DoExport(pOp, pFile, pPath, TheDocument, TRUE);
00525 
00526     // Set ourselves back
00527     SetPreviewBitmap(FALSE);
00528     // Set the Preview back to its default setting
00529     PreviewFilter::PreviewBitmapSize = OldPreviewSize;
00530 
00531     return ok;
00532 }

00547 {
00548     ERROR2IF(pOptions == NULL, FALSE, "NULL Args");
00549     ERROR3IF(!pOptions->IS_KIND_OF(GIFExportOptions), "pOptions isn't a GIFExportOptions");
00550 
00551     GIFExportOptions* pGIFOptions = (GIFExportOptions*)pOptions;
00552 
00553     // the depth we ask GDraw to render is always 32-bit, so we can get transparency
00554     // we have to convert for other formats when writing the actual bytes to the file
00555     SetDepthToRender(32);
00556 
00557     // We haven't written the header yet
00558     WrittenHeader = FALSE;
00559 
00561     // BitmapExportOptions
00562     //
00563 
00564     // this dpi will be used to scale the preview
00565     pGIFOptions->SetDPI(96.0);
00566 
00567     // the export depth of the preview is always 8
00568     pGIFOptions->SetDepth(8);
00569 
00570     // I'm fairly sure this isn't used for anything in WEBSTER-Martin-17/01/97
00571     //PreviewDither = ?;
00572 
00573     // WEBSTER - markn 12/2/97
00574     // Use the standard palette for the preview
00575     PreviewPalette = PAL_STANDARD;
00576 
00578     // MaskedFilterExportOptions
00579     //
00580 
00581     // WEBSTER - markn 12/2/97
00582     // Use error diffusion
00583     pGIFOptions->SetDither( XARADITHER_ERROR_DIFFUSION );
00584 
00585     // Previews have an optimized palette
00586     PaletteType = PreviewPalette;
00587 //  pGIFOptions->SetPalette( (PALETTE)PreviewPalette );
00588 
00589     // Previews have no interlace/transparency
00590     //pGIFOptions->SetMakeTransparent( FALSE );
00591     pGIFOptions->SetTransparencyIndex(-1);
00592 
00593     pGIFOptions->SetMakeInterlaced( FALSE );
00594 
00595     // We are a first pass render and not doing the mask, by default
00596     SecondPass = FALSE;
00597     DoingMask = FALSE;
00598 
00599     // Default will range from 0 to 4 types which correspond to the combinations of
00600     // on/off interlaced and on/off transparent
00601     Compression = 0;                // Previews have no interlace/transparency
00602 
00603     // Determine the filter type currently in use in Accusoft format
00604     FilterID = FILTERID_TI_GIF;
00605     pGIFOptions->SetFilterType(TI_GIF);
00606 
00607     m_DoingAnimation = FALSE;
00608 
00609     return TRUE;
00610 }

00481 {
00482     // Get the OILFilter object
00483     pOILFilter = new GIFOILFilter(this);
00484     if (pOILFilter==NULL)
00485         return FALSE;
00486 
00487     // Load the description strings
00488     FilterName.Load(_R(IDN_FILTERNAME_GIF));
00489     FilterInfo.Load(_R(IDN_GIF_FILTERINFO));
00490 
00491     // All ok
00492     return TRUE;
00493 }


Public Member Functions
	PreviewFilterGIF ()
	Constructor for an PreviewFilterGIF object. The object should be initialised before use.
BOOL	Init ()
	Initialise an PreviewFilter object.
virtual BOOL	DoExport (Operation , CCLexFile , PathName , Document , BOOL)
	Do some set up before exporting so the BaseBitmapFilter base class knows it is really a preview. The BaseBitmapFilter can then do resizing as necessary.
Protected Member Functions
virtual BOOL	GetExportOptions (BitmapExportOptions *pOptions)
	Override base class so we don't put up a dialog but still provide fixed options for preview bitmap filters. Notes: See BaseBitmapFilter for interface details.
Private Member Functions
	CC_DECLARE_DYNAMIC (PreviewFilterGIF)

PreviewFilterGIF Class Reference

Public Member Functions

Protected Member Functions

Private Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation