Cocoa: Slow scrolling performance (nearly all controls)
Original Reporter info from Mantis: ps
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Reporter name: Pavol S
Original Reporter info from Mantis: ps
- Reporter name: Pavol S
Description:
Scrolling content of many controls is slow on MacOS. Content of controls is painted instead of COPYRECT while scrolling.
In test app there is 3 controls with "random number paint functions". TDrawGrid and TScrollBox with really slow performance and TListBox with great performance. Only TListBox use COPYRECT (or something similar) and all numbers are same during scrolling.
Threads about this issue in Lazarus editor (TSynEdit): http://forum.lazarus.freepascal.org/index.php/topic,23494.0.html
Under Win32 all controls scrolls smooth (without changing numbers).
Mantis conversion info:
- Mantis ID: 34829
- OS: MacOS
- OS Build: High Sierra
- Platform: Cocoa/Carbon
- Version: 2.0RC3
- Monitored by: » @andrea.mauri (Andrea Mauri)