48798 - GFX Scrollbars disappear when window gets very small

Status: RESOLVED INCOMPLETE

(Core :: Layout, defect, P3)

Description

[Blake Ross]

Build ID: 2000081208

Steps to Reproduce:
(1) Go to the URL above
(2) Increase the size of the bottom frame (by dragging its top border upwards)

When the top frame gets to a certain size, its scrollbars disappear.  Attaching 
screenshot to make it easier to visualize...

Comment 1

[Blake Ross]

Attachment: vertical scrollbars disappear

Comment 2

[Blake Ross]

Attachment: even the horizontal scrollbars disappear if you size the bottom frame a bit bigger

Comment 3

[Kevin McCluskey (gone)]

Works fine for me on WINNT.

This bug has been marked "future" because the original netscape engineer working 
on this is over-burdened. If you feel this is an error, that you or another 
known resource will be working on this bug,or if it blocks your work in some way 
-- please attach your concern to the bug for
reconsideration. 
  

Comment 4

[Eric Pollmann]

I can reproduce this bug on FreeBSD, probably the same on Linux.  To reproduce:

1) View above URL.
2) shrink window vertically until the upper frame becomes very short.  At some
point, the vertical, and then the horizontal scrollbar will disappear, making
the rest of the page inaccessible.

In fact, I see this same bug in non-frameset pages, such as:

http://www.mozilla.org

Shrink the page vertically until the height is very small, eventually, the
vertical scrollbar will just disappear.

This appears to be a general bug with GFX scrollbars and not with framesets. 
Passing over to Eric Vaughan.

Comment 5

[Eric Vaughan]

Hmm. At some point even the arrows will no longer fit. Then at that point arrows 
should begin to squish too. But this will require a new feature called 
"flexdepth" to boxes.

Comment 6

[Eric Vaughan]

I.E. Autoscales the scrollbars. Which is nice. But not necessary.

Comment 7

[m_mozilla]

Some dup marking needs to be done, but I'm not sure which is the best bug:

bug  48798 - GFX Scrollbars disappear when window gets very small
bug 119677 - wrong scrollbar behaviour
bug 146295 - Vertical scrollbar missing or incorrect for very small window
bug 163803 - Scrollbar does not appear for small view sizes

my inclination is to keep bug 48798 and dup the rest, but I'll let those
involved make the call and do the deed :)

-matt

Comment 8

[Jim Mackie]

*** Bug 171778 has been marked as a duplicate of this bug. ***

Comment 9

[Amarendra Hanumanula]

*** Bug 163803 has been marked as a duplicate of this bug. ***

Comment 10

[Michael Lefevre]

*** Bug 146295 has been marked as a duplicate of this bug. ***

Comment 11

[José Jeria]

Attachment: Screenshot on how different browsers handle scrollbars buttons

Now that Mozilla on windows use native scrollbars (bug 172751), is it possible
to autoscale the scrollbars buttons like IE, Opera and Netscape 4?

Comment 12

[R.K.Aa.]

*** Bug 188323 has been marked as a duplicate of this bug. ***

Comment 13

[Frankie]

*** Bug 17089 has been marked as a duplicate of this bug. ***

Comment 14

[Frankie]

I've seen several (old, futured) bugs that are waiting for "flexdepth", but none
of them have a dependency set. Is flexdepth listed anywhere in Bugzilla?

Comment 15

[Jonathan Louie]

*** Bug 223335 has been marked as a duplicate of this bug. ***

Comment 16

[Tracy Walker [:tracy]]

*** Bug 235165 has been marked as a duplicate of this bug. ***

Comment 17

[Martijn Wargers (dead)]

Sorry, I didn't notice this bug. Bug 292284 is really the same issue, but I attached already some patches and testcases there, so I'd rather not make that bug a duplicate of this bug yet.

Comment 20

[u597032]

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