e839a589bf
The old dispatch mechanism has been left in place and continues to be used by default for now. To enable native input dispatch, edit the ENABLE_NATIVE_DISPATCH constant in WindowManagerPolicy. Includes part of the new input event NDK API. Some details TBD. To wire up input dispatch, as the ViewRoot adds a window to the window session it receives an InputChannel object as an output argument. The InputChannel encapsulates the file descriptors for a shared memory region and two pipe end-points. The ViewRoot then provides the InputChannel to the InputQueue. Behind the scenes, InputQueue simply attaches handlers to the native PollLoop object that underlies the MessageQueue. This way MessageQueue doesn't need to know anything about input dispatch per-se, it just exposes (in native code) a PollLoop that other components can use to monitor file descriptor state changes. There can be zero or more targets for any given input event. Each input target is specified by its input channel and some parameters including flags, an X/Y coordinate offset, and the dispatch timeout. An input target can request either synchronous dispatch (for foreground apps) or asynchronous dispatch (fire-and-forget for wallpapers and "outside" targets). Currently, finding the appropriate input targets for an event requires a call back into the WindowManagerServer from native code. In the future this will be refactored to avoid most of these callbacks except as required to handle pending focus transitions. End-to-end event dispatch mostly works! To do: event injection, rate limiting, ANRs, testing, optimization, etc. Change-Id: I8c36b2b9e0a2d27392040ecda0f51b636456de25 |
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| .. | ||
| tests | ||
| Android.mk | ||
| Asset.cpp | ||
| AssetDir.cpp | ||
| AssetManager.cpp | ||
| BackupData.cpp | ||
| BackupHelpers.cpp | ||
| BufferedTextOutput.cpp | ||
| CallStack.cpp | ||
| Debug.cpp | ||
| FileMap.cpp | ||
| Flattenable.cpp | ||
| misc.cpp | ||
| MODULE_LICENSE_APACHE2 | ||
| NOTICE | ||
| PollLoop.cpp | ||
| Pool.cpp | ||
| README | ||
| RefBase.cpp | ||
| ResourceTypes.cpp | ||
| SharedBuffer.cpp | ||
| Static.cpp | ||
| StopWatch.cpp | ||
| String8.cpp | ||
| String16.cpp | ||
| StringArray.cpp | ||
| SystemClock.cpp | ||
| TextOutput.cpp | ||
| Threads.cpp | ||
| Timers.cpp | ||
| VectorImpl.cpp | ||
| ZipFileCRO.cpp | ||
| ZipFileRO.cpp | ||
| ZipUtils.cpp | ||
Android Utility Function Library If you need a feature that is native to Linux but not present on other platforms, construct a platform-dependent implementation that shares the Linux interface. That way the actual device runs as "light" as possible. If that isn't feasible, create a system-independent interface and hide the details. The ultimate goal is *not* to create a super-duper platform abstraction layer. The goal is to provide an optimized solution for Linux with reasonable implementations for other platforms.