Closed Bug 488084 Opened 11 years ago Closed 11 years ago

video volume slider not displayed in correct position


(Core :: XUL, defect)

Not set





(Reporter: Dolske, Assigned: enndeakin)



(Keywords: fixed1.9.1)


(1 file)

From bug 475317 comment 12:

Enn: I'm hitting a weird bug... Start playing a video, then click the mute
button. The volume slider should move to the bottom (0), but it stays at the
top (100). Now move the mouse away (so the controls fade out), then back over
and... ta-da, the volume slider is now being drawn at the correct position.

Further clicks on the mute button make the volume <scale> work normally.

The immediate cause of this is that the CurrentPositonChanged() code in
nsSliderFrame is hitting the "do nothing if the position did not change" case,
and bails out (curpospx is 0, instead of the expected 100).

The real problem occurs earlier on... Calls to _setIntegerAttribute() in
scale.xul and calls to nsSliderFrame::AttributeChanged() should occur in pairs.
But I'm not seeing the call to AttributeChanged() when the scale's value is set
from the video control's setupInitialState(), nor does it get called when I
hardcode <scale value="50"> in the XUL. The code in _setIntegerAttribute() is
calling setAttribute() in all these cases, so I'm not sure where things are
going wrong early on.
Assignee: nobody → enndeakin
Yep, this fixes the problem for me.
Attachment #373912 - Flags: superreview?(neil)
Attachment #373912 - Flags: review?(neil)
Attachment #373912 - Flags: superreview?(neil)
Attachment #373912 - Flags: superreview+
Attachment #373912 - Flags: review?(neil)
Attachment #373912 - Flags: review+
Comment on attachment 373912 [details] [diff] [review]
we just need to initialize mCurPos properly

For consistency I guess you should read the curpos from a scrollbar if available, although given scrollbar.xml's extensive xbl:inherits list I fail to see why we read any attributes from the scrollbar...
I see we often need to set attributes on the scrollbar, so we usually have a choice of elements from which to read the attribute anyway.
Closed: 11 years ago
Resolution: --- → FIXED
Attachment #373912 - Flags: approval1.9.1?
Whiteboard: [needs 1.9.1 landing]
Comment on attachment 373912 [details] [diff] [review]
we just need to initialize mCurPos properly

Attachment #373912 - Flags: approval1.9.1? → approval1.9.1+
Pushed to 191:
Keywords: fixed1.9.1
Whiteboard: [needs 1.9.1 landing]
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