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Date Posted: 11:21:55 11/17/02 Sun
Author: Michel
Subject: Re: Cropping with fixed proportions
In reply to: Finn Sorensen 's message, "Re: Cropping with fixed proportions" on 04:28:23 11/15/02 Fri

Hi Finn,

The EnRubber unit is a good starting point, but I would not change the code but it will get overwritten when you upgrade. You can either create a completely new mouse hander, using EnRubber as a starting point, or derive from TRubberBandMouseHandler.

Best regards,


>Yes, I tried the demo program. I'm also a registerd
>user so
>I have the source EnRubber which I understand do all
>magic. This is very good.
>My aim is to:
>1. Draw a proposed Rubberband on an picture with
>fixed proportions without any user interface.
>2. Then let the user drag the Rubberband around
>and/or grab the bottomright handle to size it.
>3. He should not be able to stretch the rubberband out
>4. Finally crop the image to the selected(rubberband)
>region. This is already there.
>Do I have to make changes in the Enrubber unit to do
>>Hi Finn,
>>I am not sure I understand you completely. Have you
>>tried the demo program. You can download a precompiled
>>one from www.intervalsoftware.com/download.html
>>You can select a region with the mmSelect mouse mode,
>>and then crop to the select region.
>>Best regards,
>>>I have a cutomer who want to adjust his image to a
>>>predefined picture template typical from a newspaper
>>>He gets the size eg. by mm (340 X 230) . So he wants
>>>to have
>>>a dragable and sizeable shape/rectangle (only
>>>BottomRight) to pick an "extract" from the original
>>>image, with the right proportions.
>>>When that has been selected, then I would be able to
>>>use the cropping functions in your excellent tool
>>>the selected shape/rectangle attributes.
>>>Any tips on how to make such a shape on top of
>>>ImageScrollBox ?
>>>Thanks, best Regards

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