diff options
Diffstat (limited to 'services/inputflinger/InputReader.cpp')
-rw-r--r-- | services/inputflinger/InputReader.cpp | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/services/inputflinger/InputReader.cpp b/services/inputflinger/InputReader.cpp index 36095bf..d7329d9 100644 --- a/services/inputflinger/InputReader.cpp +++ b/services/inputflinger/InputReader.cpp @@ -450,6 +450,11 @@ InputDevice* InputReader::createDeviceLocked(int32_t deviceId, int32_t controlle device->addMapper(new SwitchInputMapper(device)); } + // Scroll wheel-like devices. + if (classes & INPUT_DEVICE_CLASS_ROTARY_ENCODER) { + device->addMapper(new RotaryEncoderInputMapper(device)); + } + // Vibrator-like devices. if (classes & INPUT_DEVICE_CLASS_VIBRATOR) { device->addMapper(new VibratorInputMapper(device)); @@ -2718,6 +2723,92 @@ void CursorInputMapper::fadePointer() { } } +// --- RotaryEncoderInputMapper --- + +RotaryEncoderInputMapper::RotaryEncoderInputMapper(InputDevice* device) : + InputMapper(device) { + mSource = AINPUT_SOURCE_ROTARY_ENCODER; +} + +RotaryEncoderInputMapper::~RotaryEncoderInputMapper() { +} + +uint32_t RotaryEncoderInputMapper::getSources() { + return mSource; +} + +void RotaryEncoderInputMapper::populateDeviceInfo(InputDeviceInfo* info) { + InputMapper::populateDeviceInfo(info); + + if (mRotaryEncoderScrollAccumulator.haveRelativeVWheel()) { + info->addMotionRange(AMOTION_EVENT_AXIS_SCROLL, mSource, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f); + } +} + +void RotaryEncoderInputMapper::dump(String8& dump) { + dump.append(INDENT2 "Rotary Encoder Input Mapper:\n"); + dump.appendFormat(INDENT3 "HaveWheel: %s\n", + toString(mRotaryEncoderScrollAccumulator.haveRelativeVWheel())); +} + +void RotaryEncoderInputMapper::configure(nsecs_t when, + const InputReaderConfiguration* config, uint32_t changes) { + InputMapper::configure(when, config, changes); + if (!changes) { + mRotaryEncoderScrollAccumulator.configure(getDevice()); + } +} + +void RotaryEncoderInputMapper::reset(nsecs_t when) { + mRotaryEncoderScrollAccumulator.reset(getDevice()); + + InputMapper::reset(when); +} + +void RotaryEncoderInputMapper::process(const RawEvent* rawEvent) { + mRotaryEncoderScrollAccumulator.process(rawEvent); + + if (rawEvent->type == EV_SYN && rawEvent->code == SYN_REPORT) { + sync(rawEvent->when); + } +} + +void RotaryEncoderInputMapper::sync(nsecs_t when) { + PointerCoords pointerCoords; + pointerCoords.clear(); + + PointerProperties pointerProperties; + pointerProperties.clear(); + pointerProperties.id = 0; + pointerProperties.toolType = AMOTION_EVENT_TOOL_TYPE_UNKNOWN; + + float scroll = mRotaryEncoderScrollAccumulator.getRelativeVWheel(); + bool scrolled = scroll != 0; + + // This is not a pointer, so it's not associated with a display. + int32_t displayId = ADISPLAY_ID_NONE; + + // Moving the rotary encoder should wake the device (if specified). + uint32_t policyFlags = 0; + if (scrolled && getDevice()->isExternal()) { + policyFlags |= POLICY_FLAG_WAKE; + } + + // Send motion event. + if (scrolled) { + int32_t metaState = mContext->getGlobalMetaState(); + pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_SCROLL, scroll); + + NotifyMotionArgs scrollArgs(when, getDeviceId(), mSource, policyFlags, + AMOTION_EVENT_ACTION_SCROLL, 0, 0, metaState, 0, + AMOTION_EVENT_EDGE_FLAG_NONE, + displayId, 1, &pointerProperties, &pointerCoords, + 0, 0, 0); + getListener()->notifyMotion(&scrollArgs); + } + + mRotaryEncoderScrollAccumulator.finishSync(); +} // --- TouchInputMapper --- |