590453 - Scale (slider) refresh bug: shows all previous positions

Status: VERIFIED FIXED

(Toolkit :: UI Widgets, defect)

Description

[Pierre Réveillon]

User-Agent:       Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.9pre) Gecko/20100824 Namoroka/3.6.9pre
Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b4) Gecko/20100818 Firefox/4.0b4

When moving a scale, with mouse of keyboard, previous position does not disappear.
Everything becomes find when I resize the window.

Reproducible: Always

Steps to Reproduce:
1. Open the testcase
2. Move the scale
Actual Results:  
Show all previous positions, see screenshot.

Expected Results:  
Should remove previous positions, showing only current one.

Comment 1

[Pierre Réveillon]

Attachment: Not working test case.

Comment 2

[Pierre Réveillon]

Attachment: Screenshot of the bug

Comment 3

[Pierre Réveillon]

Attachment: Screenshot of the bug

Comment 4

[Pierre Réveillon]

The bug disappears when the window is resized, or looses focus.

Comment 5

[Pierre Réveillon]

Works well on Linux and MacOSX.
Bug on Windows 7.
Not tested on Windows XP.

Comment 6

[mcdavis941 (sporadically reading bugmail)]

Confirming for Vista.Mozilla/5.0 (Windows NT 6.0; WOW64; rv:2.0b7pre) Gecko/20100919 Firefox/4.0b7preI'm seeing the same thing the original reporter is.  The background behind the scale's sliding head is not refreshing while the mouse is down, so you see trails where the slider has been.  The background refreshes when you release the mouse button.You can see the same thing with the add-on DownThemAll, which uses the scale element in its Preferences dialog.

Comment 7

[mcdavis941 (sporadically reading bugmail)]

Sorry about the lack of line breaks, somehow they got lost during copy-paste ...

Anyway, that u-a string is:

Mozilla/5.0 (Windows NT 6.0; WOW64; rv:2.0b7pre) Gecko/20100919 Firefox/4.0b7pre

Comment 8

[Jesper Kristensen]

I see the same thing on Mozilla/5.0 (Windows NT 6.0; rv:2.0b7pre) Gecko/20100922 Firefox/4.0b7pre. When hardware acceleration is off I see the same as in the screenshot, and when hardware acceleration is on, I see a black background.

Comment 9

[Jesper Kristensen]

Works:
http://hg.mozilla.org/mozilla-central/rev/b84d0be52070
http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2010/06/2010-06-10-03-mozilla-central/
Broken:
http://hg.mozilla.org/mozilla-central/rev/431eab8cf6ab
http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2010/06/2010-06-11-03-mozilla-central/
Changes:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=b84d0be52070&tochange=431eab8cf6ab

Comment 10

[bsg]

On windows XP; Firefox/4.0b9pre the slider background turns black when the cursor first enters the slider's rectangle, but background disappears when cursor is over the slider.

Comment 11

[Jesper Kristensen]

From http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=b84d0be52070&tochange=431eab8cf6ab the most interesting change description seems to be for bug 555133. In that change, the only Windows specific change is in nsNativeThemeWin::GetWidgetTransparency (http://mxr.mozilla.org/mozilla-central/source/widget/src/windows/nsNativeThemeWin.cpp#2225 ). When I change that function to always return eUnknownTransparency, the problem goes away.

Comment 12

[Dave Townsend [:mossop]]

Unless this is visible somewhere in the main Firefox UI I think this only softblocks.

Rob, Jim, this sounds like one of yours?

Comment 13

[Jim Mathies [:jimm]]

Attachment: patch

Odd, IsThemeBackgroundPartiallyTransparent return false, yet, the background of the control is the underlying content. Attached is a patch that fixes the problem.

Comment 14

[Jim Mathies [:jimm]]

Attachment: exported patch

Comment 15

[Robert Strong (they/them - no direct email)]

Pushed to mozilla-central
http://hg.mozilla.org/mozilla-central/rev/7bd612d05f85

Comment 16

[u279076]

The testcase does not seem to open.  Is there a way we can verify this bug as fixed?

Comment 17

[Jim Mathies [:jimm]]

(In reply to comment #16)
> The testcase does not seem to open.  Is there a way we can verify this bug as
> fixed?

Install this extension:

https://addons.mozilla.org/en-US/firefox/addon/remote-xul-manager/

add 'bugzilla.mozilla.org' in the white list config under tools

It should open.

Or you can restrict this to local files you save to your desktop by adding <Local files>.

Comment 18

[u279076]

Thanks for the help, Jim.

Verified fixed on Firefox 4.0b12pre 20110214.

Comment 19

[bsg]

On Firefox 4.0b11, the fixed version does not show the dotted box around the slider when it gains the focus.