On 04/24/2015 02:22 AM, Pekka Paalanen wrote:
If you have the compositor in charge of moving the cursor, and the app in charge of scrolling and drawing the contents, you would get a lag between the cursor moving and the content/scrollbar moving. Granted, this is probably a minor issue and can happen in other scenarios. We did manage to avoid the unsync with window moves, though.
That's a good point: it means applications want to be able to control the cursor position during a drag even if they are *not* doing a "slow scrollbar". This is the only way to make sure the cursor stays in sync with the graphic being moved.
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