94563 - IMG tag in relatively-positioned span cuts image short

Status: RESOLVED DUPLICATE of bug 79315

(Core :: Web Painting, defect)

Description

[Mark Jones]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; WinNT4.0; en-US; rv:0.9.3+) Gecko/20010809
BuildID:    2001080904

The image drawn by the following code has only the bottom portion of the image
visible.  The layout seems to be taking the entire image into account, but only
draws an amount equal to the current line-height.

<span style="position:relative;"><img src="example.gif"></span>

This is more than a rendering problem, because the DOM tells me that the top of
the image is the top of where the image is visible.

If you specify an *incorrect* height on the IMG tag, it often (but not always)
shows properly with the specified height.  Using the height of the actual image
has no effect.

Reproducible: Always

NOTE: The only difference between the Standard and Quirk layout mode is that the
 Standard mode shows the Span to extend a few pixels below the image, but not
above it into the space "reserved" for it.  (As observed with a background color
on the relatively-placed span)

Comment 1

[Boris Zbarsky [:bzbarsky]]

Over to style system.  I see this with linux build 2001-09-07-12

Comment 2

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

This is probably either a problem with the view system itself or a problem with
the way layout is positioning views.

Comment 3

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

Moving over to views.  This reminds me of bug 13215.

Comment 4

[Kevin McCluskey (gone)]

Moving to Mozilla0.9.6

Comment 5

[Kevin McCluskey (gone)]

Specifying an image height of 49 or 51 for the relatively positioned span fixes
the problem. Not specifying a height or using a height of 50 (which is the
actual height of the image) makes the problem appear.

<IMG height=49 src="s_files/example1.gif">

Comment 6

[Sébastien Desvignes]

I think bug 79315, bug 86850 and bug 124825 are duplicate (or at least very
close) of this bug.

Comment 7

[Christopher Whitt]

Copying original report and comment #5 to bug 79315

*** This bug has been marked as a duplicate of 79315 ***