Bug 90343 - Cannot hide several parts of a math object behind graphics objects
Summary: Cannot hide several parts of a math object behind graphics objects
Status: RESOLVED WORKSFORME
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Impress (show other bugs)
Version:
(earliest affected)
Inherited From OOo
Hardware: x86-64 (AMD64) Linux (All)
: medium minor
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-03-30 08:17 UTC by Shimi Chen
Modified: 2016-04-16 07:31 UTC (History)
1 user (show)

See Also:
Crash report or crash signature:


Attachments
Bug in slide 1, workaround 1 in slide 2 (bug shown only when presenting) (18.19 KB, application/vnd.oasis.opendocument.presentation)
2015-03-30 08:17 UTC, Shimi Chen
Details

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Description Shimi Chen 2015-03-30 08:17:37 UTC
Created attachment 114456 [details]
Bug in slide 1, workaround 1 in slide 2 (bug shown only when presenting)

Using multiple graphics objects (such as a rectangles) to hide multiple parts of a math object in a presentation does not work.

Use case:
Having a mathematical process written in one math object but showing it's stages in class using animations.

Bug:
Once the first box is made to disappear, all the math object moves to the foreground and is no longer hidden.

Workaround 1:
Convert the math object to curve.

Disadvantage of workaround 1:
Can no longer edit math object once converted.


Workaround 2:
Make a different math object for each part.

Disadvantage of workaround 2:
Harder to use existing long math objects (have to go in, cut them, insert phantoms for where you have an equal sign, etc.). Harder to align everything nicely.

In the attached simple example file, the first slide is with a hidden math object and thus shows the bug, In the second slide it is converted to a curve and works correctly.
Comment 1 Buovjaga 2015-04-04 16:24:52 UTC
Reproduced on Linux, but not on Windows!

Lowering severity as workaround exists: https://wiki.documentfoundation.org/images/0/06/Prioritizing_Bugs_Flowchart.jpg

Win 7 Pro 64-bit, Version: 4.4.2.2
Build ID: c4c7d32d0d49397cad38d62472b0bc8acff48dd6
Locale: fi_FI

Version: 4.5.0.0.alpha0+
Build ID: 8c3cf9dd48e40604867d3a28bddaccd65142df17
TinderBox: Win-x86@62-TDF, Branch:MASTER, Time: 2015-03-27_15:15:18
Locale: fi_FI

Ubuntu 14.10 64-bit 
Version: 4.4.2.2
Build ID: 40m0(Build:2)
Locale: en_US

LibreOffice 3.3.0 
OOO330m19 (Build:6)
tag libreoffice-3.3.0.4
Comment 2 tommy27 2016-04-16 07:23:22 UTC
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-- The LibreOffice QA Team This NEW Message was generated on: 2016-04-16
Comment 3 Shimi Chen 2016-04-16 07:31:37 UTC
Bug no longer occurs on Build ID: 5.1.2.2 Arch Linux build-1.