RFR: 8345538: Robot.mouseMove doesn't clamp bounds on macOS when trying to move mouse off screen [v13]

[Phil Race]

On Tue, 13 May 2025 03:42:27 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

> > Moreover, it looks like as part of the "unification" the fix dropped clamping code in Robot (!)
> > https://cr.openjdk.org/%7Epchelko/9/8035568/webrev.02/src/macosx/native/sun/awt/CRobot.m.udiff.html
> 
> That code executed only if the current mouse position is unknown or outside of the mainscreen, that native code was moved to the java level into the CRobot class by the patch: https://cr.openjdk.org/~pchelko/9/8035568/webrev.02/src/macosx/classes/sun/lwawt/macosx/CRobot.java.sdiff.html

ah, that's the code that executes only once, first time when robot doesn't yet "know" where it believes the pointer is.
interesting that it clamps in this case. But it isn't multi-display capable.

The native reproducer shows the same behaviour as the JDK.
We can send it to Apple but the code in this PR should be pushed

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PR Comment: https://git.openjdk.org/jdk/pull/22781#issuecomment-2902578649