Issue 21524 - Flashing white lines on screen when entering text in a text box quickly or outside of slide.
Summary: Flashing white lines on screen when entering text in a text box quickly or ou...
Alias: None
Product: Impress
Classification: Application
Component: ui (show other issues)
Version: OOo 1.1
Hardware: PC Windows XP
: P2 Trivial (vote)
Target Milestone: ---
Assignee: AOO issues mailing list
QA Contact:
Depends on:
Reported: 2003-10-21 23:25 UTC by Unknown
Modified: 2013-08-07 15:21 UTC (History)
1 user (show)

See Also:
Issue Type: DEFECT
Latest Confirmation in: ---
Developer Difficulty: ---

flashes while editing text (7.31 KB, application/octet-stream)
2003-10-23 15:38 UTC, christian.guenther
no flags Details

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Description Unknown 2003-10-21 23:25:03 UTC
This issue causes white lines to flash across the screen when doing various 
operations with a text box.  These white lines are particularly dangerous to 
someone who is epileptic and using the software, as the flashing white lines 
*might* trigger an epileptic attack.

There are many various ways to replicate the white lines, the most prominant 
ive found is the following:

1 Create a text box of a small width

2 Insert many lines into the box so that the box goes off the slide and beyond 
the bottom of the workspace.

3 Hold down the backspace key, as if not satisfied with the paragraph you just 
wrote and are going to start from scratch.

Result: Many white lines will flash either inside the text box, or if you went 
off the workspace, all over the screen.
Comment 1 wolframgarten 2003-10-22 07:32:38 UTC
Reassigned to Christian.
Comment 2 christian.guenther 2003-10-23 15:28:59 UTC
set to new and change the target
Comment 3 christian.guenther 2003-10-23 15:38:50 UTC
Created attachment 10582 [details]
flashes while editing text
Comment 4 christian.guenther 2003-10-23 15:39:46 UTC
I can reproduce the bug.
I attached a document to reproduce the bug.
Delete the b and enter the b again.

A workaround for this is to switch off 'Fit width to text' and/or 'fit
height to text' in 'Format/Text'
Comment 5 clippka 2003-10-27 15:56:05 UTC
can we fix this without double buffering?

Its not flashing that much on my machine, 1Ghz P4 with a Matrox G550
Comment 6 openoffice 2003-11-24 09:57:21 UTC
Comment 7 chapkova 2005-02-04 06:38:30 UTC
This issue is still not resolved in OO 1.1.4 under Windows.  I successfully 
replicated this defect.  The instruction given in the first comment are not 
too clear.  User has to open a Presentation application.  Then insert a text 
field and hold down any character key.  Once the text will “run off†the 
slide, the white flashes will appear in the background of the slide as well as 
within the area of the text field on every stroke of a key.  However, I 
performed more follow up testing.  If the user simply attempts to copy and 
paste extremely large text into text field, there is no occurrence of flashing 
white lines neither in the background of the slide nor in the text field area 
Comment 8 asadfiroze 2006-01-27 16:36:24 UTC
I successfully replicated the bug on Windows XP Service Pack 2, OOo 1.1.5. The 
replication sequence in the description is in the simplest form.
Comment 9 rybarczyk15 2009-09-10 18:03:15 UTC
Using the attached file I was able to reproduce this bug as the text box seems
to be refreshing whenever the end of line is reached.

I am using Version 3.1.1 OOO310m19 (Build:9420)  running Windows Vista-64  SP1.
Comment 10 sanilgandhi 2009-09-12 23:43:07 UTC
I was able to replicate this bug. The steps followed where similar to post.
1. Create a small text box of specific size.
2. Insert as many lines such that text goes beyond the workspace.
3. Now press back space as if you need to start from scratch.
4. Text Box refreshes whenever you reach end of line.
I have tested this on the file attached with this report. 
When we open the file attached with the report and try to go delete all 
character by pressing back space key. We see white lines flashing for the text 
which has gone outside the text box.
Also I would like to state that,  I copied a large paragraph into the text box. 
When I tried to repeat procedure for replicating the bug I was not able to do 
System Configuration on which I replicated this bug:
Operating System: Windows Vista, XP.
Ram: 3 GB
Open Office Impress version: 3.1.1, OOO310m19 (Build: 9420)
Comment 11 openoffice 2009-09-15 09:16:33 UTC
Looks like an edit engine problem and tl is now in charge.
Comment 12 sligh 2009-09-18 04:31:18 UTC
(Jon Sligh 9/17/2009)

Replicated issue in OOo 3.1 [OOO310m19 (Build 9420)] on Windows Vista SP 1.  

Steps to reproduce in a simpler fashion:
1.) Open Impress
2.) Hit the enter key until the text box grows past the size of the slide.
3.) Hit return to create a new line in the text box outside of slide
4.) Hit backspace to remove the new line

The repeated process of adding a new line and deleting that new line causes the
entire text box to flash.  

This could occur over and over as users paste text very large text from another
source into a presentation and edit the text.

This issue could cause a headache or something more serious for some people. 
Most often it will just be an annoyance for users.