Bug 67787 - EDITING: Text cursor trail in formula editor
Summary: EDITING: Text cursor trail in formula editor
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Spreadsheet (show other bugs)
Version: 4.1.0.4 release
Hardware: Other Windows (All)
: medium normal
Assignee: Not Assigned
QA Contact:
URL:
Whiteboard: BSA
Keywords: regression
Depends on:
Blocks:
 
Reported: 2013-08-05 12:49 UTC by Olexa
Modified: 2013-11-21 13:53 UTC (History)
2 users (show)

See Also:
i915 platform:
i915 features:

Attachments
Some cursor trail left (767 bytes, image/png)
2013-08-05 12:49 UTC, Olexa 		Details
Calc cell edit cursor artifacts (56.91 KB, image/jpeg)
2013-09-02 12:21 UTC, brucehohl 		Details
View All

Description Olexa 2013-08-05 12:49:56 UTC 
Created attachment 83661 [details]
Some cursor trail left

Problem description: Moving formula editor cursor by keyboard arrows leaves a trail of cursor ghosts. This makes the editor very difficult to use. It looks like the problem is caused by function syntax helper.

Steps to reproduce:
1. Create a new Calc document.
2. Press F2, type a long formula.
3. Press and hold Left Arrow keyboard key.

Current behavior: Moving cursor leaves a trail of its ghosts in previous positions. When Left Arrow key is released, some cursor ghosts keep being displayed.

Expected behavior: Just one cursor is displayed.

              
Operating System: Windows XP
Version: 4.1.0.4 release
Last worked in: 4.0.4.2 release
Comment 1 brucehohl 2013-09-02 12:21:11 UTC 
Created attachment 85057 [details]
Calc cell edit cursor artifacts
Comment 2 brucehohl 2013-09-02 12:41:14 UTC 
I can confirm this bug and that it has existed for both the Linux and Windows versions since about 4.0.  Yesterday, I downloaded and checked the Linux version 4.1.1.2 and confirmed the problem remains.

To reproduce this bug press F2 to Edit a cell which contains a formula WITH PARENTHESES, then use the Left / Right arrow keys to move within the cell.  A trail of cursor artifacts will result which makes editing the formula difficult or practically impossible.  

Moving the cursor all the way to the right or left or past a parentheses temporarily clears some or all of the artifacts.  Practically, the user has to edit these formulas with the Formula bar or use the mouse to position the cursor which is inefficient.  The bug also degrades aesthetics.
Comment 3 brucehohl 2013-11-21 13:53:04 UTC 
Work arounds for this:
(1) Use the Formula bar to edit formulas.
(2) For 'in-cell' editing via pressing F2 only re-position the cursor with the mouse.
(3) For 'in-cell' editing via pressing F2. The initial cursor position is at the end or right so for the first Left Arrow move also press the Shift key. After this, all remaining L/R Arrow movements can be made without the shift key and no cursor artifacts remain.

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