The zero point position on both rulers should be movable.

Submitted by Rodd Clarkson

Description

I would like to be able to move the zero point on the rulers so as to set some other position in the image as 0,0 than the top left corner of the image.

In my case I work a lot with web pages where the 0,0 position for designs are actually somewhere inside the page, with div elements (position:absolute) hanging out in the negative area. Currently, I have to mark all the positions based on 0,0 being in the top left corner and then recalculate where the elements should actually be for laying out with CSS. Being able to move the 0,0 point to the appropriate point in the document would save me quite a lot of work.

I'm sure there are plenty of other good reasons for this sort of functionality. Photoshop supports the ability to move the zero point in the rulers.

Also, on a related note, it might also be useful to be able to change the direction of the rulers in terms of negative and positive. This might be useful for consistency with other applications (for example Freehand had 0,0 in the bottom left corner of the screen, with postive numbers running up and across to the right) or again to help with layout of elements (for example, one of the perl PDF modules positions in a similar manner to Freehand).

I'm not sure how hard and of this is. I imagine that moving the zero point on the ruler should be relatively easy (possibly some handles and a 'recalculation' of what numbers are displayed (what do I know ;-]) but suspect that the later (changing the negative/positive direction of rulers would involve some non-trivial changes to many dialogs involved in positioning elements. Then again, what would I know, I'm just the twit filing a feature request. ;-]

Version: 2.2.x