Comment 78 for bug 170049

I was not able to compile for Mac OS. I'm sure it's no fault of anyone but
me, but this is why I have not been able to test.

On Thu, Feb 28, 2013 at 2:34 PM, vaifrax <email address hidden> wrote:

> I tried looking at the svg side and I'm a little confused.
>
> How about, as a first step, modifying inkscape so that rulers and mouse
> pointer coordinate status use the origin that is indirectly defined by the
> viewbox? What about the viewbox units? Second step would be a gui to
> actually configure the viewbox within inkscape in a user friendly way.
> Finally, using those coordinates directly for new objects instead of
> inserting another transformation (I think this is what Krzysztof wrote in
> the previous post).
> (viewbox reference: http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute)
> I played around with a hand coded svg, in case anyone else is interested I
> attached it.
>
> This alone does not allow setting up an inverted y axis (to enable having
> y axis pointing up like now) but it looks like there is a ‘svg:transform’
> attribute for that. Inverting the axis would also require things like
> flipping text, I think?
> (svg:transform reference:
> http://www.w3.org/TR/SVG/coords.html#SVGGlobalTransformAttribute )
>
> Maybe it helps if we can agree on how coordinate systems should be defined
> in the svg and how inkscape should display units and rulers?
> I feel like I haven't really understood all issues.
>
> ** Attachment added: "viewbox with origin in the center of the page"
>
> https://bugs.launchpad.net/inkscape/+bug/170049/+attachment/3551689/+files/viewbox-test.svg
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/170049
>
> Title:
> Inverted ruler co-ordinate system
>
> Status in Inkscape: A Vector Drawing Tool:
> In Progress
> Status in “inkscape” package in Ubuntu:
> Triaged
>
> Bug description:
> The y-axis of the rulers' co-ordinate system is
> inverted (increasing upwards), and places the origin on
> the bottom left of the viewport. The SVG spec places the
> default origin on the top left of the viewport, and has
> the co-ordinate system increasing to the right and
> downwards.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/inkscape/+bug/170049/+subscriptions
>

--

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