Bug 115474 - Applying autoformat to a large number of cells takes too long (with row-alternate shading)
Summary: Applying autoformat to a large number of cells takes too long (with row-alter...
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Calc (show other bugs)
(earliest affected)
Inherited From OOo
Hardware: All All
: medium normal
Assignee: Not Assigned
Keywords: perf
: 124341 (view as bug list)
Depends on:
Blocks: Table-AutoFormat
  Show dependency treegraph
Reported: 2018-02-05 17:02 UTC by Heiko Tietze
Modified: 2023-05-04 03:21 UTC (History)
2 users (show)

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Description Heiko Tietze 2018-02-05 17:02:55 UTC
Select columns A:E and apply any Format > Autoformat styles... Killed the process after an hour.

While the use case is to select only a small number of cells and to apply the style to this selection it's not unexpected that users try it for whole columns. A warning before the execution of potentially long lasting operation could be a solution. Or to disable the function in case of selection beyond a reasonable number.
Comment 1 Aron Budea 2018-02-06 01:21:36 UTC Comment hidden (obsolete)
Comment 2 Aron Budea 2018-02-06 01:40:20 UTC
Correction: it depends on if the style has row-alternate shading, eg. Box List Blue (6.0) or Currency Turqoise (< 6.0).
When using the appropriate style, the bug occurs from all the way back to 3.3.0.
Comment 3 QA Administrators 2019-04-01 03:24:48 UTC Comment hidden (obsolete, spam)
Comment 4 Justin L 2020-07-04 16:46:12 UTC
Yup. It runs through left column, right column, top, bottom, body for 1 million rows.

#9  ScTable::AutoFormatArea(short, int, short, int, ScPatternAttr const&, unsigned short) (this=0x55555665e000, nStartCol=3, nStartRow=222882, nEndCol=3, nEndRow=222882, rAttr=..., nFormatNo=5)
    at sc/source/core/data/table4.cxx:2057

#10 ScTable::AutoFormat(short, int, short, int, unsigned short) (this=0x55555665e000, nStartCol=3, nStartRow=0, nEndCol=6, nEndRow=1048575, nFormatNo=5)
    at sc/source/core/data/table4.cxx:2092

#11 ScDocument::AutoFormat(short, int, short, int, unsigned short, ScMarkData const&) (this=0x55555703e510, nStartCol=3, nStartRow=0, nEndCol=6, nEndRow=1048575, nFormatNo=5, rMark=...)
    at sc/source/core/data/documen3.cxx:1172
Comment 5 Buovjaga 2021-05-03 11:04:47 UTC
*** Bug 124341 has been marked as a duplicate of this bug. ***
Comment 6 QA Administrators 2023-05-04 03:21:53 UTC
Dear Heiko Tietze,

To make sure we're focusing on the bugs that affect our users today, LibreOffice QA is asking bug reporters and confirmers to retest open, confirmed bugs which have not been touched for over a year.

There have been thousands of bug fixes and commits since anyone checked on this bug report. During that time, it's possible that the bug has been fixed, or the details of the problem have changed. We'd really appreciate your help in getting confirmation that the bug is still present.

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