155369 - textarea: vertical scrollbar: scrollspeed in percentage to characters not lines

Status: RESOLVED WORKSFORME

(Core :: Layout: Form Controls, enhancement)

Description

[gbrinkmann]

Mozilla 1.0

This is not really a bug but it's an unusual behaviour:

Example: If you have multiple very long (not wrapped) lines in the beginning of
a textarea and multiple very short lines in the end of the textarea, moving of
the textarea's vertical scrollbar in the same speed results in different
scroll-speeds of the textarea-content. The very long lines are scrolled very
slowly and the short lines very fast in percentage to the whole text.

It seems that the scrollspeed is oriented on the number of characters that
scroll through the textarea and not on the number of lines.

Comment 1

[rods (gone)]

->>

Comment 2

[Andreas Kunz]

Attachment: Test page with long and short lines

It does not happen with the attached test page I produced myself on 2002063008
with Win2k.
Do you have a testcase, i.e. a URL or file where this happens to you?

Comment 3

[gbrinkmann]

Well, maybe the report was mistakable. (it is not that simple to describe this
behaviour in english.) The short and long lines have to be in a
textarea-formfield. Your testcase is just a normal html-page with different
sized lines.

I will attach a testcase in the next comment...

Comment 4

[gbrinkmann]

Attachment: textarea testcase with long and short lines

Comment 5

[Garth Wallace]

Hard to tell. There doesn't seem to be any difference when scrolling with the
arrows on the scrollbar, just when dragging the box. And it seems possible that
the speed difference is illusory (the first try, there seemed to be a speed
difference, but on subsequent tries it seemed much less obvious). Linux 2002062304

Comment 6

[gbrinkmann]

Ah, i think i know what might be the "problem": Perhaps it is an
time-aliasing-thing. The long lines are scrolled in the same speed as the short
ones, but because the new textarea-content (after scrolling) looks exactly the
same as the content before scrolling and ist just located some pixels deeper
than before, it looks like nearly nothing has changed. (Just like a fastly
turning spoked wheel that looks like turning slowly).

Comment 7

[Henrik Lynggaard Hansen]

Does your last comment mean that this is not a bug after all ?

Comment 8

[gbrinkmann]

Yes, i think you can mark this report as fixed. (Or was i allowed to do this?)

Comment 9

[Daniel Clemente]

RESOLVED -> WORKSFORMERLY (from comment 8)