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Date Posted: 07:54:21 03/21/00 Tue
Author: Michel
Subject: Re: Envision vs. ImageLib
In reply to: Juan 's message, "Re: Envision vs. ImageLib" on 21:42:03 03/20/00 Mon


Hi Juan,

The Envision library should be fine for your needs.

> * Visualize TIFF Group Fax 4

This can be done in both the VCL TImage component and the Envision TImageScrollBox component.

> * Zoom in/out
The TImageScrollBox will be the easiest way to handle this, although you can still do it with a TImage be setting Stretched to True, and computing the dimensions yourself.

> * Save and Load (File/Stream/BLOB)
All classes derived from TDibGraphic (even TGraphic) have SaveToStream and LoadFromStream methods. When using the TImageScrollBox, the Graphic property provides access to the
TDibGraphic.

> * Print file's portions
You can use the TCropTransform to extract a portion of an image, then the TDibGraphicPrinter for printing.

> * To be fast loading/show files
Envision is quite fast at loading the file formats.

Best regards,

Michel

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