Closed
Bug 1811410
Opened 1 year ago
Closed 1 year ago
Dragging the splitter is very inefficient
Categories
(Thunderbird :: General, defect)
Thunderbird
General
Tracking
(thunderbird_esr102 unaffected)
RESOLVED
FIXED
111 Branch
| Tracking | Status | |
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| thunderbird_esr102 | --- | unaffected |
People
(Reporter: darktrojan, Assigned: darktrojan)
Details
Attachments
(1 file)
The splitter updates on every mousemove event, and every update causes a reflow. This is a horrible waste of CPU time. I'm going to stop it from updating more than once per frame, as any more frequently does nothing of value, it's not even drawn to the screen.
It's still going to need to reflow at every update because that's how it works out whether it's reached the edge of the allowed area. For simple situations we could pre-calculate this and avoid reflows, but most situations are not simple.
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Assignee | |
Comment 1•1 year ago
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Pushed by geoff@darktrojan.net:
https://hg.mozilla.org/comm-central/rev/457840c56921
Improve the performance of dragging the splitter. r=aleca
Status: ASSIGNED → RESOLVED
Closed: 1 year ago
Resolution: --- → FIXED
Pushed by geoff@darktrojan.net: https://hg.mozilla.org/comm-central/rev/dd49b861e1b5 follow-up - Fix missed review comment. rs=me
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Updated•1 year ago
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Description
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