261915 - Capital W character displays incorrectly in rollover text

Status: RESOLVED DUPLICATE of bug 96041

(Core :: Layout: Text and Fonts, defect)

Description

[Warwick Leicester]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20040913 Firefox/0.10
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20040913 Firefox/0.10

First pixel column on capital "W" character does not change to rollover state
colour.

Reproducible: Always
Steps to Reproduce:
1. Load page
2. rollover WJWhite link

Actual Results:  
If you look at the last entry in the right-hand column "WJWhite" and rollover it

Expected Results:  
Changed the first pixel column to the rollover colour

Comment 1

[Mike Capp]

Reproducible in Firefox1.0PR on Win2k. 

Suspect that problem is related to the uppercase 'W' of this font having a
negative 'A' (as in ABC) width - the bit that sticks out of the left-hand side
of the glyph box is not being coloured correctly. You can see that the problem
pixels are one pixel to the left of the previous rows.

Comment 2

[Mike Capp]

Hmm... *cannot* duplicate on my home WinXP box. Not in Firefox1.0PR, not in Moz
1.6. (Not in Opera or IE either.) However, this box does have several
peculiarities (144dpi display and "Minimum font size" prefs in Moz//FF) which
may be muddying the waters; I'll try some other browsers on my normal-dpi Win2k
machine tomorrow.

This does look awfully like a Windows GDI glitch to me, though. I'd be surprised
(not stunned, but surprised) if Gecko is colouring text at the pixel level.

Comment 3

[Ross Shannon]

Can't confirm on WinXP, changing OS to Win2k.

Comment 4

[Christopher Curzio]

I can't duplicate this behavior on my box either. Mozilla/5.0 (X11; U; Linux
i686; rv:1.7.3) Gecko/20040914 Firefox/0.10

Definitely appears to be Windows-only. 

Comment 5

[Ronald Tilby]

Attachment: Testcase

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8a4) Gecko/20040928
This bug is likely Windows Only.

Comment 6

[Gary van der Merwe]

Attachment: Screenshot Showing Frame

This screenshot show the the W is incorrectly postioned. It far left pixals are
rendered outside of the content frame. 

In IE, the W is also incorrectly postioned, allthough it is croped. This
indicates that it is a Win GDI Problem.

Comment 7

[Gary van der Merwe]

Attachment: Screenshot Showing Frame Zoomed

Sorry - meant to zoom the screen shot. 

Also need to correct my grammer: 
This screenshot shows that the ...
		    - ----

Comment 8

[Gary van der Merwe]

Confirming

Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20040913 Firefox/0.10
Windows: Version 5.1 (Build 2600.xpsp_sp2_rtm.040803-2158 : Service Pack 2)

Please change the Component to "Layout Font and Text".

Comment 9

[Gary van der Merwe]

Attachment: Testcase

Also happens to italic "f"

Maybe realted to http://support.microsoft.com/default.aspx?scid=kb;en-us;111649

Comment 10

[Warwick Leicester]

On Windows XP if "ClearType" is used to render screen fonts this bug does not
apply, however if "Standard" is used, it does apply.

Comment 11

[Simon Montagu :smontagu]

*** This bug has been marked as a duplicate of 96041 ***