310451 - {inc}dynamically increasing font-size doesn't change width of absolutely positioned boxes without top and left properties until next resize

Status: RESOLVED WORKSFORME

(Core :: Layout: Positioned, defect)

Description

[Yuh-Ruey Chen]

Increasing font-size via scripting won't change the width of absolutely
positioned boxes that don't have their top and left CSS properties specified.
That means that the inline text and objects will wrap, even if font-size is just
increased by 1 pixel.

Triggering a reflow will correct the width and allow the text to unwrap. For
example, resizing the window will fix it.

Comment 1

[Yuh-Ruey Chen]

Attachment: testcase

Comment 2

[Yuh-Ruey Chen]

Attachment: testcase

Slightly more informative testcase.

FYI, adding both top and left properties leads to bug 271776.

I've also found a related bug involving specifying width on positioned elements
causing an "unwrapped artifact" to appear...I'll file a new bug.

Comment 3

[Yuh-Ruey Chen]

Attachment: wrap with position: relative workaround

Wrapping the div inside another div with position: relative gets rid of the
bug.

Comment 4

[Yuh-Ruey Chen]

Filed bug 310553.

Comment 5

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

Is this present in FF 1.0.x?

Comment 6

[Yuh-Ruey Chen]

No. However, changing the font size in Fx 1.0.x requires a manual reflow to
reflect the new changes (in the testcase, it won't change until after the manual
reflow).

Comment 7

[Yuh-Ruey Chen]

BTW, the text in the testcases is misleading. The text won't overlap in this
bug. They were originally testcases for bug 271776, in which the text does overlap.

Comment 8

[Mats Palmgren (inactive)]

Attachment: Testcase #3

Comment 9

[Mats Palmgren (inactive)]

The bug still occurs in SeaMonkey 2006120801 (post reflow branch) on Linux.
FWIW, it renders "Testcase #3" different from 2006120701 (pre reflow branch),
which also broken.

Comment 10

[Jesse Ruderman]

Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.3a1pre) Gecko/20090823 Minefield/3.7a1pre

WFM.  I'll turn "Testcase #3" into a reftest.

Comment 11

[Jesse Ruderman]

reftest: http://hg.mozilla.org/mozilla-central/rev/1572bb861865