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Date Posted: 17:59:23 01/18/02 Fri
Author: Michel
Subject: Re: Load TIFF in EPS files?
In reply to: neural 's message, "Load TIFF in EPS files?" on 03:09:51 01/18/02 Fri


Hi,

Could you send me the EPS file. In version 2 there will an EPS graphic for EPS files that have a tiff preview.

I will try it out with my version.

Some exceptions are normal; ie, they get handled by Envision, so you may want to turn off "break on exception" in the debugger options. But I am not sure exactly what is the problem with your file.

Best regards,

Michel

>Dear Sir/Madam:
> I've written a class TEPSGraphic based on you
>TTiffGraphic in order to read the embedded pixel tiff
>in eps files. Following is the implement:
>
> TEPSGraphic = class(TTIFFGraphic)
> public
> procedure LoadFromStream(Stream: TStream);
>override;
> end;
>
>implementation
>
>type
> TEPSHeader = packed record
> Magic: Cardinal;
> PSOffset,
> PSLen,
> MetaPos,
> MetaLen,
> TiffPos,
> TiffLen: Integer;
> Checksum: SmallInt;
> end;
>
>procedure TEPSGraphic.LoadFromStream(Stream: TStream);
>var
> Header: TEPSHeader;
>begin
> Stream.ReadBuffer(Header, SizeOf(Header));
> if Header.Magic <> $C6D3D0C5 then raise
>EInvalidGraphic.CreateResFmt(@SInvalidImage, ['EPS']);
> Stream.Seek(Header.TiffPos - SizeOf(Header),
>soFromCurrent);
> inherited;
>end;
>
>initialization
> TPicture.RegisterFileFormat('EPS', gesEPS,
>TEPSGraphic);
>finalization
> TPicture.UnregisterGraphicClass(TEPSGraphic);
>
>It works well on opaque eps files, but when loading
>transparent eps files(saved in Adobe Illustrator 9.0),
>I got following exceptions one by one:
>
>1. ETiffError TIFFGetField: Tag = 296
>2. ETiffError TIFFGetField: Tag = 282
>3. ETiffError TIFFGetField: Tag = 283
>4. ETiffError Unsupported bit count: 16
>
>Can you tell me what's the problem? Thank you in
>advance.

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