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Re: Pan and zoom navigation history

by thomas.deweese :: Rate this Message:

Hi Luc,

Luc_B <lucbard@...> wrote on 06/29/2009 04:03:39 PM: > So I did my test by choosing the "Transform..." menu item. I did a bunch of > transforms and the next and previous menu item would never become enabled... > > This did not work until I clicked on the Stop button that I noticed was > enabled. Then all my transformations would trigger the gvtRenderingCompleted > event and therefor update the transformHistory object...
Ok, I see the problem. It used to be that all rendering transform
changes caused a gvtRenderingComplete, that is no longer the case for
'interactive' documents - i.e. ones with script and/or animation. So
the right thing to do now is to register a JGVTComponentListener with
the canvas to catch componentTransformChanged events instead.

> thomas.deweese wrote: > > > > Hi Luc, > > > >> Luc_B wrote: > >> > > >> > I am trying to implement a back / forward history in the svg whenever > > a > >> > user has panned or zoomed. > >> > > >> > I have tried to reuse the TransformHistory class from the SVGBrowser > > but > >> > they seem to only store the RenderingTransform at load. I need more > > than > >> > that. > > > > In my tests it records all my pan and zoom actions. Are you including > > the code from the JSVGViewerFrame that notifies the history class of > > transform changes? > > > >> > I want to know what AffineTransform should I store so when the user > > hits > >> > back in order to show him where he was before. > > > > 'canvas.getRenderingTransform()'. > > > >> > I am also wondering how to restore the svg view to that specific > > point... > > > > 'canvas.setRenderingTransform( affine );' > > > > This is all in the JSVGViewerFrame class already. Just look for all > > the lines with 'transformHistory'. > > > > > > -- > View this message in context: http://www.nabble.com/Pan-and-zoom- > navigation-history-tp24074338p24260583.html > Sent from the Batik - Users mailing list archive at Nabble.com. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: batik-users-unsubscribe@... > For additional commands, e-mail: batik-users-help@... >

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