276051 - Repaint problem of html code

Status: RESOLVED EXPIRED

(Core Graveyard :: GFX: Win32, defect)

Description

[Thomas]

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

When you scroll down the website, there's a list of window messages. However,
everything works fine unless you scroll down WM_PAINTICON, below this line
nothing is being repainted properly. Selecting text seems also not to work.

Reproducible: Always

Steps to Reproduce:
1. Open the sample URL
2. Find WM_PAINTICON in the list
3. Scroll up and down a little to see the problem

Actual Results:  
Firefox doesn't crash, it just doesn't repaint these areas properly

Expected Results:  
The text should be painted properly.

Comment 1

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

Reproducible on:
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8a6) Gecko/20041226
Firefox/1.0+
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8a6) Gecko/20041220

but not on:
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8a6) Gecko/20041223 Firefox/1.0+

Comment 2

[timeless]

not reproducable:
Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8a6) Gecko/20041225
Camino/0.8+

Comment 3

[Boris Zbarsky [:bzbarsky]]

Does this depend on the font size?  What font size do you use?

Comment 4

[Thomas]

I'm using the standard font size of windows xp (i guess 10 or 12pt). My guess
that firefox/gecko creates one huge device context and draws everything inside,
it's just that device contexts have a limited size (don't remember how large
they can be). Again, it's just a guess.

Comment 5

[Christian :Biesinger (don't email me, ping me on IRC)]

strange... this does not affect all of the page. starting with the paragraph "Es
liegen natürlich neben dem C++-Sourcecode auch die beiden Perlskripte bei",
things paint correctly.

(can reproduce on winxp, trunk, nightly build 2005012005)

Comment 6

[Christian :Biesinger (don't email me, ping me on IRC)]

and yes, using text zoom to make the font smaller does seem to help

Comment 7

[Thomas]

As it's an embedded frame (iframe?) i guess the repainting is done by tanslating
the screen coordinates to coordinates relative the the client area. I'm pretty
sure there are some limitations of bitmap sizes. haven't looked at any code
though...

Comment 8

[Boris Zbarsky [:bzbarsky]]

On WinXP, the device contexts can be pretty darn big....

Comment 9

[Gervase Markham [:gerv]]

This is an automated message, with ID "auto-resolve01".

This bug has had no comments for a long time. Statistically, we have found that
bug reports that have not been confirmed by a second user after three months are
highly unlikely to be the source of a fix to the code.

While your input is very important to us, our resources are limited and so we
are asking for your help in focussing our efforts. If you can still reproduce
this problem in the latest version of the product (see below for how to obtain a
copy) or, for feature requests, if it's not present in the latest version and
you still believe we should implement it, please visit the URL of this bug
(given at the top of this mail) and add a comment to that effect, giving more
reproduction information if you have it.

If it is not a problem any longer, you need take no action. If this bug is not
changed in any way in the next two weeks, it will be automatically resolved.
Thank you for your help in this matter.

The latest beta releases can be obtained from:
Firefox:     http://www.mozilla.org/projects/firefox/
Thunderbird: http://www.mozilla.org/products/thunderbird/releases/1.5beta1.html
Seamonkey:   http://www.mozilla.org/projects/seamonkey/

Comment 10

[Gervase Markham [:gerv]]

This bug has been automatically resolved after a period of inactivity (see above
comment). If anyone thinks this is incorrect, they should feel free to reopen it.