Created attachment 148903 [details] Callgrind output from master 1. Open attachment 136239 [details] 2. Tools - Options - Writer - View: tick Smooth scroll 3. Scroll down the document by pressing Page Down on your keyboard Only seen with gtk3, kde5 and win. Arch Linux 64-bit Version: 6.3.0.0.alpha0+ Build ID: 5408f0731b9cd8be0e1b7aa5145b825337baad84 CPU threads: 8; OS: Linux 4.20; UI render: default; VCL: gtk3; Locale: fi-FI (fi_FI.UTF-8); UI-Language: en-US Calc: threaded Built on 5 February 2019 Version: 6.3.0.0.alpha0+ (x64) Build ID: 573a473275ad7c76d0cada9b7e73d4923e7a79d5 CPU threads: 4; OS: Windows 10.0; UI render: default; VCL: win; TinderBox: Win-x86_64@42, Branch:master, Time: 2019-02-03_01:22:10 Locale: fi-FI (fi_FI); UI-Language: en-US Calc: threaded 3.3.0
Wait, does smooth scroll even respond to PgDn/PgUp or CursorDn/CursorUp? All of which relocate the edit cursor. Yes--but the edit cursor redraw seems to come after some amount of view scroll. That redraw/reposition seems to cause a pause in smooth scroll. Conversely smooth scroll responds cleanly to the ScrollBar control which does not relocate the edit cursor, just the views of the canvas.
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