https://bugs.documentfoundation.org/show_bug.cgi?id=154572
Bug ID: 154572
Summary: Scroll by mouse wheel not correctly when rows are
fixed
Product: LibreOffice
Version: 7.6.0.0 alpha0+ Master
Hardware: x86-64 (AMD64)
OS: Windows (All)
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: Calc
Assignee: [email protected]
Reporter: [email protected]
Created attachment 186419
--> https://bugs.documentfoundation.org/attachment.cgi?id=186419&action=edit
zip file with 2 small sheet documents to show the problem
When in a sheet document rows are fixed Calc doesn't correctly scoll by the
mouse wheel.
Correctly would be a jump width w = +m or w = -m where the value m is specified
in the Windows Mouse settings (how many lines should be moved downwards or
upwards when mouse wheel is turned by one "step").
Until LO 7.5.2 (and LOdev 7.5.3) this works correctly, tested last with
Version: 7.5.3.0.0+ (X86_64) / LibreOffice Community
Build ID: 521ba951d3b983b58f7772fe62d19b07efa19881
CPU threads: 4; OS: Windows 10.0 Build 22624; UI render: Skia/Raster; VCL: win
Locale: de-DE (de_DE); UI: de-DE
Calc: threaded
In LOdev 7.6 the jump width "w" is influenced by the number of fixed rows (f)
additionally:
- Scroll upwards (to the top of the list): w = - m -f
- Scroll downwards (to the bottom of the list): w = m - f
When m - f < 0 at scrolling downwards Calc scrolls upwards in small steps
instead downwards.
A special case at scrolling downwards is when m - f = 0. In this case the jump
width is alternating 0 and m.
To show the bug I have added a zip file with 2 small sheet documents:
- Mouse_wheel_scroll_error_Steps.ods: several Jump width values depending on
Windows mouse value and the number of fixed rows in a sheet
- Scroll-Test_altix_Nummern_V2.ods: document to show the behavior when the
mouse wheel is turned at once more than one step
When the mouse wheel is turned at once quickly enough more than one step one
can scroll downwards also when m - f < 0 but slower as expected and one can see
that rows move up and down:
- set scroll width in Windows to 3 Lines
- open "Scroll-Test_altix_Nummern_V2.ods" from the attached zip file
- jump to "-> Ende" (Link in cell D3) on one of the both sheets
- try to scroll downwards by turning the mouse wheel
Behavior reproduced with
Version: 7.6.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: 96aad0d0497c8486f8affc8fed79e63a060c9a59
CPU threads: 4; OS: Windows 10.0 Build 19045; UI render: Skia/Raster; VCL: win
Locale: de-DE (de_DE); UI: de-DE
Calc: CL threaded
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