[haiku-bugs] Re: [Haiku] #8895: Artifacts in menu bar when resizing horizontally
- From: "leavengood" <trac@xxxxxxxxxxxx>
- Date: Sun, 19 Aug 2012 05:26:06 -0000
#8895: Artifacts in menu bar when resizing horizontally
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Reporter: humdinger | Owner: leavengood
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: Applications/WebPositive | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Comment (by leavengood):
I looked into this and it is definitely specific to the WebPositive menu
bar. When being resized, the "updateRect" which is passed in
BMenuBar::Draw can sometimes skip sections, meaning they are never filled
in. The main thing which is different about WebPositive's menu bar is that
it is within a horizontal layout group. I started trying to remove the
menu bar from the layout group to definitely determine if that was the
problem, but my quick hack changes just crashed Web+. I'll need to take a
more deliberate approach, maybe even to add another application's menu bar
to a layout and see if it has the same issues.
I'll look more into this later, but I suspect the layout code is making
the resizing slower, and causing the skipping.
I will say that the only way I could reproduce the really bad artifacts
like in the screenshot was to make VirtualBox really slow. But I could
still see occasional single pixel lines at normal speed.
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Ticket URL: <http://dev.haiku-os.org/ticket/8895#comment:2>
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