InputService: real-time gestures #285
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Android O has added support for building gestures incrementally, allowing to send input events almost in real-time. Older versions of Android will continue to wait for gestures to complete before dispatching them.
| // down, was up | ||
| if ((buttonMask & (1 << 0)) != 0 && !inputContext.isButtonOneDown) { | ||
| inputContext.isButtonOneDown = true; | ||
| instance.startGesture(inputContext, x, y); |
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This introduces a regression regarding multi-client input. Please leave the logic client-specific.
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Right, I was so focused on getting gestures to work that I didn't even notice that there are multiple InputContext instances. Fixed this here.
| void endGesture(InputContext inputContext, int x, int y); | ||
| } | ||
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| private static class LegacyGestureHandler implements GestureHandler { |
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no need for these classes IMO, just do the Android version differentiation in the existing handlers .-)
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What did you have in mind exactly? I'm trying to merge the two handlers, but the code is getting a lot more confusing and hard to follow.
Unrelated: I noticed that you were using System.currentTimeMillis(), which is not monotonic. This means that if the system time changes while there is an ongoing gesture the resulting duration will be wrong. SystemClock.elapsedRealtime() is better for measuring intervals.
- Pass InputContext to the constructor to make the GestureHandler interface independent. - Remove unnecessary instance methods. - Duplicate some comments.
This makes use of GestureDescription.StrokeDescription.continueStroke() to be able to dispatch parts of a logical stroke to the OS while the stroke is continuing. Credit is due to https://github.com/gm-vm who came up with a first working implementation I used as a basis for this one. Co-authored-by: Gabriele Mazzotta <gabriele.mzt@gmail.com> Closes bk138#69 Closes bk138#285
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Android O has added support for building gestures incrementally, allowing to send input events almost in real-time.
Older versions of Android will continue to wait for gestures to complete before dispatching them.