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Date Posted: 08:50:44 02/13/02 Wed
Author: glup
Subject: Re: Fax TIFF in Fine Mode
In reply to: Michel 's message, "Re: Fax TIFF in Fine Mode" on 20:00:35 02/11/02 Mon

>>2. Everytime the TDibGraphic has to draw itself into a
>>Cavas where the aspect ratio is different than the the
>>own, it changes the aspect ratio "on-the-fly" with
>>StretchBlt resp. StretchDIBits.

>Solution 2 would compensate without you knowing, so if
>you do a SaveToStream/File the dimensions of you image
>would have changed.

Why does SaveToStream/File draw the image into a new canvas that does have another aspect ratio than the original?

>
>Sometimes a user wants to work in pixels, but when
>sending output to a printer, the resolution is
>important (where Envision does not handle different
>x/y resolutions).

I understand that Delphi likes working with pixels, so the "rest" should support this. But why should the "user" (here developer) care when using a device independent graphic about the device aspect ratio and the device resolution? This I see as a nice implizit task for the component.

>
>Solution 1 would not interfere with any existing code
>which I think is important. The TAspectRatioTransform
>is actually just a TResizeTransform with the proper
>dimensions.
>

I'm using this solution currently.

>Does that sound good?

As I said I work with this, but think that some work could be done by the component implicit.

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