534185 - Pagezoom with Ctrl + Mousewheel does not work when cursor is over fieldset

Status: RESOLVED DUPLICATE of bug 343945

(Core :: DOM: UI Events & Focus Handling, defect)

Description

[Anders Hansen]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; da; rv:1.9.1.5) Gecko/20091102 Firefox/3.5.5 (.NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2b6pre) Gecko/20091210 Namoroka/3.6b6pre (.NET CLR 3.5.30729)

When holding down the Ctrl key on the keyboard and turning the mouse wheel the page zoom do not work if the mouse cursor is hovering above a fieldset. If the cursor is placed outside the fieldset, on any text inside the fieldset, or on the fieldset legend, the page zoom do work. When hovering the  cursor any other place on the fieldset the page zoom do not work.

Reproducible: Always

Steps to Reproduce:
1. Open the Test.html test page
2. Hover the mouse cursor above the fieldset
3. Hold down the Ctrl key on the keyboard
4. Scroll with the mouse wheel
Actual Results:  
No page zoom happens.

Expected Results:  
Page zoom should work just as if the mouse cursor was placed above a div.

Tested on latest Mindfield nightly (Namoroka, version 3.6b6pre). Browser uses default settings. Only have two Extensions installed (Java Quick Starter 1.0, and Microsoft .NET Framework Assistant 1.1).

The bug also exists in Firefox 3.5.5 (Mozilla/5.0 (Windows; U; Windows NT 5.1; da; rv:1.9.1.5) Gecko/20091102 Firefox/3.5.5 (.NET CLR 3.5.30729)).

Comment 1

[Anders Hansen]

Attachment: Test HTML page with a single fieldset and a reference div

Comment 2

[Ria Klaassen (not reading all bugmail)]

Confirmed with Firefox 3.0, 3.5, 3.6 and latest trunk on Windows Vista.

Comment 3

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

This code:
http://mxr.mozilla.org/mozilla-central/source/browser/base/content/browser-fullZoom.js
is just listening for DOMMouseScroll events.

Do DOMMouseScroll events not get dispatched when over a fieldset?

Comment 4

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

Er, that code isn't really relevant.

I think this is just because nsEventStateManager::DoScrollZoom checks that the target of the event isn't a form control.  I really don't know why it does that.