187889 - "font-size: 0.4px" seems be ignored

Status: RESOLVED INCOMPLETE

(Core Graveyard :: GFX, defect, P3)

Description

[Henrik Gemal]

<style>
.w1 {
	font-size: 0.4px;
}
</style>
<span class="w1">W</span>

seems to render the text W large...
In IE it's very small

20030105

Comment 1

[Henrik Gemal]

Attachment: testcase

Comment 2

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

-> Platform specific GFX (doesn't happen on all platforms, I don't think)

Comment 3

[Felix Miata]

The minimum size required to render an intelligible character is 8px.

All I see is a dot in 2003010512 OS/2 trunk.

Comment 4

[Boris Zbarsky [:bzbarsky]]

do you have a minimal font size set in font prefs?

Comment 5

[Henrik Gemal]

set to "none"

Comment 6

[Ian Graham]

Attachment: second testcase (more examples)

This attachment checks a bundle of px size values. It looks as if all
fractional values are ignored a size of 1.5px is treated just like 0.5, 0.3,
etc. 
Platform:  Mozilla 1.2.1 on Windows 2000.

Comment 7

[Felix Miata]

Attachment: HTML testcase - all sub-legible px sizes are rendered as expected in this

Comment 8

[Ian Graham]

Attachment: fixed example (replaces previous one)

Oops. Busted testcase. Please ignore previous comments. 

It looks as if pixel sizes less than ~0.4999999px cause the problems ....
weird.
Platform: MOzilla 1.2.1 on Windows 2000.

Comment 9

[Boris Zbarsky [:bzbarsky]]

worksforme on Linux (this morning's trunk nightly).  Looks like this is a
windows-specific problem (not a problem on Linux or OS/2).

Comment 10

[Robert O'Callahan (:roc) (email my personal email if necessary)]

Not a blocker, unless you can show some top site that we've regressed on.

Comment 11

[Justin Wood (:Callek)]

If I recall the CSS1 (rev 1) spec correctly, decimal values can be "rounded" to
a value which the UA can display, a px refers to a pixel, which in all respects
is "sopposed" to be (of course correct me if I am wrong) the smallest
displayable point on a screen..

where if you round .4px it would be 0px, even if 1px was displayable (for a
letter) it would make sense that it would "dissapear" since I don't know anyone
who could even attempt to make it out.

Comment 12

[Anne (:annevk)]

However, we are ignoring the declaration completely at the moment.

Comment 13

[Hixie (not reading bugmail)]

I don't think we are...

Comment 14

[Justin Wood (:Callek)]

Dupe of Bug 53995 ?

Comment 15

[Gábor Stefanik]

Seems to be fixed in Firefox 4.