2723 - [PP] ALT tag not displayed upon resize if image broken

Status: VERIFIED FIXED

(Core Graveyard :: Viewer App, defect, P2)

Description

[Eli Goldberg]

* TITLE/SUMMARY
[PP] ALT tag not displayed on Linux if image broken

(broken out of bug #694)

* STEPS TO REPRODUCE
0) Launch Viewer
1) Point Viewer to http://www.prometheus-music.com/gecko/bug694.html (text
appended)

* RESULT
 - What happened

A broken image (broken-image.gif) exclusively appears; no ALT text displayed.

 - What was expected

Behavior on 4.5 is to display the broken image with the alt text in a box. (Bug
#1994 describes alternative behavior under future consideration.)

* REGRESSION

 - Occurs On
        viewer (1.27.99 optimized build for Linux)

 - Doesn't Occur On
        viewer (1.27.99 optimized build for Mac OS)
        viewer (1.27.99 optimized build for Win32 [NT 4, Service Pack 3])

* HTML SNIPPET (from URL)

<img src="bla.gif" width=200 height=200 alt="blu">


* CONFIGURATIONS TESTED

- [Mac] Power Mac 8500/120 (233 Mhz 604e), 64 MB RAM (VM on; 1 MB of VM used),
1024x768 (Thousands of Colors), Mac OS 8.5.1

- [Win32] Vectra VL (233 Mhz P2), 96 MB RAM, 800x600 (True Color), NT 4.0 SP3.

- [Linux] Vectra VL (266 Mhz P2), 32 MB RAM (blech).

Comment 1

[Eli Goldberg]

I neglected to note this in the bug report (it happens fast, even with 32 MB of
RAM) ---

Before the broken image icon is drawn, Viewer *will* draw a box with the ALT
text, and then erase it to draw the broken image icon in the upper-left hand
corner of the screen.

Comment 2

[rickg]

Can you dig into this? It may be a rendering problem.

Comment 3

[leger]

Inserting Milestone info.

Comment 4

[leger]

Setting all current Open/Normal to M4.

Comment 5

[Eli Goldberg]

Using the:
	- 2.18.99 Mac OS (Viewer & Apprunner)
	- 2.22.99 Linux (Viewer; didn't check Apprunner)

...builds, the ALT tag is now correctly displayed, but is replaced with a broken
image icon upon resizing the document.

Comment 6

[stuartp]

marking all non-functionality m4 bugs of mine to m5 as i won't be around for the
next week or two.

Comment 7

[stuartp]

marking assigned

Comment 8

[stuartp]

This works in my build as of April 23 or so.  Could someone please verify?

Comment 9

[Eli Goldberg]

Pavlov,

	Technically, this bug no longer happens. I'm not sure if it's actually
fixed, hence the following question.

	Are we specifically no longer displaying a broken image icon and associated
frame when an image cannot be loaded, and just providing the plain text label?

	That's what's happening, and I'm not aware of any specification covering
this behavior.

	Thanks. (Re-opening bug just to ensure that you see the above question.)

Comment 10

[stuartp]

From what I understand, the broken image isn't supposed to be displayed.  The
alt tag is supposed to be shown, so that if you have something the image alt
tag will fit right in with the paragraph.  I could be wrong though.  Feel free
to mark this as resolved or whatnot.  Pam, any ideas?

Comment 11

[stuartp]

clearing resolution, marking assigned, moving to m6 so that we can verify this
one better.

Comment 12

[Hixie (not reading bugmail)]

This bug is one of many related to alternate text of images. All these bugs
have been marked. To find related bugs, search the description field for the
string "[ALT]".

Comment 13

[stuartp]

according to: http://www.w3.org/TR/REC-html40/struct/objects.html#adef-alt

"Several non-textual elements (IMG, AREA, APPLET, and INPUT) let authors specify
alternate text to serve as content when the element cannot be rendered
normally."

so I believe that it is doing the right thing.  I am going to mark this one as
fixed.

Comment 14

[Eli Goldberg]

As of the 5.15.99 build, yes, it is doing the right thing on all three platforms
(the ALT tag is displayed, and remains displayed upon resize.)

On Win32, there is a slight deviation; I'll write that up as a separate bug, and
reference the bug number here.

Comment 15

[Eli Goldberg]

The side-issue (broken image icon changes upon resize if running Win32) is now
bug #6559.

Thus, this bug is now marked as Verified.

Comment 16

[Hixie (not reading bugmail)]

This bug reopened, but there doesn't seem to be any particular reason for it to
have done so. The Bug Activity Log shows no activity since May 27th!

I am going to e-mail Terry. I suggest no-one touch this bug anymore until we
have worked out what happened.

Comment 17

[Terry Weissman]

I think that pavlov has reassigned this bug (from [e-mail] to
[e-mail]), which caused it to be reopened.  The question, though, is
why this didn't show up in the activity log.

Comment 18

[Stuart Parmenter]

sorry for bugzilla spam.  trying to get these off my radar

Comment 19

[Eli Goldberg]

Re-flagging as Verified.