[Etoys] Sugar Nav bar problems
yoshiki at squeakland.org
Mon Apr 23 11:52:24 EDT 2007
> Just built a new RPM, image version 1276. This includes the new nav
> bar in Sugar look, Scott's blueprint canvas, and the implicit self
> The problem is that as soon as the sugar nav bar is enabled, there is
> a pause every second. The tiny car moves some steps, then stops,
> moves, stops. This is only visible on the XO, my desktop is too fast.
> Disabling the flap cures this.
> MessageTally indicates that undoButtonAppearance is the culprit. It
> rebuilds the undo icon every second, which apparently is not a cheap
> operation. Maybe using an 8-bit bitmap with a colormap would be more
> efficient? To get really fancy we'd even need to support two colors
> plus alpha, because the original icons have a fill color, stroke
> color, and transparency info.
Since the other apps don't show different buttons when they are
disabled, we don't have to do that. Just Graying (cheaply) is ok.
I'll make that modification.
> Also, on the XO the navbar looks tiny, I think each button must be
> 75x75 px.
Yes. There was some confusion about the size among Abe-san and me.
I'll try to hook up the SVG stuff and FFI interface to Cairo by
Kawamura-san to prerender these icons from SVG file.
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