269758 - Context menu rendered partially offscreen when expanding upwards with many items

Status: VERIFIED DUPLICATE of bug 255571

(Firefox :: Menus, defect)

Description

[Lucas]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0

In a situation where the context menu validly presents more menu items than will
fit downward, the menu is drawn upward from the cursor point, which may cause
the topmost items to be rendered offscreen.
(Similar offscreen display can be seen in Bug 263473)


Reproducible: Always
Steps to Reproduce:
(optional: install theme that draws larger menus than FF default) 
1. Install extensions that add several items to the context menu, like FlashGot.
2. To ensure maximum context items, find a page with one large or several small
hotlinked images positioned vertically along the page, like
http://www.apple.com/itunes/download/ (Nov. 2004)
3. Right-click in different locations until the context menu expands upwards
from the cursor due to lack of space downward.

Actual Results:  
Menu origin is locked to cursor and expands upwards past the visible display
ceiling when it cannot go downwards, obscuring topmost menu items.

Expected Results:  
Top of context menu hits the ceiling of the visible display, and the full menu
expands downward, overriding the cursor point of origin. 

If, for some reason, the menu is too long for both upper and lower boundaries,
then it makes sense that it would have a hover-scroll arrow like the Bookmarks
menu does.

(Examples screenshots attached using standard FF theme and the popular Noia 2.0
eXtreme.  You can see in them that I have Winamp 5 permadocked at the top, which
further offsets the ceiling for maximized windows only.  My test results were
identical with and without Winamp.)

Comment 1

[Lucas]

Attachment: Default theme, no offscreen.

Comment 2

[Lucas]

Attachment: Default theme, offscreen

Comment 3

[Lucas]

Attachment: Noia theme, offscreen where default was not.

Comment 4

[Lucas]

Attachment: Noia theme with almost half of menu offscreen

Comment 5

[Lucas]

Attachment: Noia theme still offscreen, clicking on empty space without image.

All screenshots cropped from 1024x768 resolution.

Comment 6

[:Gavin Sharp [email: [e-mail]]]

*** This bug has been marked as a duplicate of 255571 ***