281291 - Scroll Bar size: Scroll bars don't resize to match Windows defaults with any theme except the mozilla 'classic' therme

Status: RESOLVED INVALID

(SeaMonkey :: UI Design, defect)

Description

[Travis]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041217
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041217

I use a touch screen on one of my computers, and have changed the scrollbar size
in windows (XP) so that is is more easily used; this scrollbar change in size is
then reflected in all programs except the mozilla suite.

I have learned after trying different approaches to fix it that this problem
seems to exist using every mozilla theme I have tried, EXCEPT the mozilla
'Classic' theme --  this theme does display the scrollbar as the size set in
windows.

Reproducible: Always

Steps to Reproduce:
1. Change the scrollbar size in windows xp (right-click on desktop, select
Properties | Appearence | Advanced | Item: Scrollbar, then increase the size and
click OK / Apply).

2.  Open or restart Mozilla and compare to any other program (IE, etc).  
Actual Results:  
All scrollbars will be larger except those in the Mozilla suite, unless you have
the 'Classic' mozilla theme applied -- this theme seems to handle changes to the
windows scrollbar size appropriatly.

Expected Results:  
Scrollbar size should have changed to reflect changes to the windows theme

Windows XP
Mozilla 1.7.5

Every theme tried except the 'Classic' theme has this problem.

Comment 1

[Gérard Talbot]

The last time I checked, Firefox was honoring (and Mozilla was NOT honoring)
custom scrollbar size as set by the user in Appearence | Advanced | Item:
Scrollbar. 

Comment 2

[Boris Zbarsky [:bzbarsky]]

Themes are allowed to set scrollbar sizes either explicitly or to "os default"
(the latter by using moz-appearance).  In the latter case, the scrollbars will
also have the OS-default look, of course.

Sounds like everything is working as expected -- themes that set the size
explicitly get that size, and themes that say to use the OS default get the OS
default.