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/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "../Macros.h"
#include "ExternalStylusInputMapper.h"
#include "SingleTouchMotionAccumulator.h"
#include "TouchButtonAccumulator.h"
namespace android {
ExternalStylusInputMapper::ExternalStylusInputMapper(InputDeviceContext& deviceContext,
const InputReaderConfiguration& readerConfig)
: InputMapper(deviceContext, readerConfig), mTouchButtonAccumulator(deviceContext) {}
uint32_t ExternalStylusInputMapper::getSources() const {
return AINPUT_SOURCE_STYLUS;
}
void ExternalStylusInputMapper::populateDeviceInfo(InputDeviceInfo& info) {
InputMapper::populateDeviceInfo(info);
if (mRawPressureAxis.valid) {
info.addMotionRange(AMOTION_EVENT_AXIS_PRESSURE, AINPUT_SOURCE_STYLUS, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f);
}
}
void ExternalStylusInputMapper::dump(std::string& dump) {
dump += INDENT2 "External Stylus Input Mapper:\n";
dump += INDENT3 "Raw Stylus Axes:\n";
dumpRawAbsoluteAxisInfo(dump, mRawPressureAxis, "Pressure");
dump += INDENT3 "Stylus State:\n";
dumpStylusState(dump, mStylusState);
}
std::list<NotifyArgs> ExternalStylusInputMapper::reconfigure(nsecs_t when,
const InputReaderConfiguration& config,
ConfigurationChanges changes) {
getAbsoluteAxisInfo(ABS_PRESSURE, &mRawPressureAxis);
mTouchButtonAccumulator.configure();
return {};
}
std::list<NotifyArgs> ExternalStylusInputMapper::reset(nsecs_t when) {
mSingleTouchMotionAccumulator.reset(getDeviceContext());
mTouchButtonAccumulator.reset();
return InputMapper::reset(when);
}
std::list<NotifyArgs> ExternalStylusInputMapper::process(const RawEvent* rawEvent) {
std::list<NotifyArgs> out;
mSingleTouchMotionAccumulator.process(rawEvent);
mTouchButtonAccumulator.process(rawEvent);
if (rawEvent->type == EV_SYN && rawEvent->code == SYN_REPORT) {
out += sync(rawEvent->when);
}
return out;
}
std::list<NotifyArgs> ExternalStylusInputMapper::sync(nsecs_t when) {
mStylusState.clear();
mStylusState.when = when;
mStylusState.toolType = mTouchButtonAccumulator.getToolType();
if (mStylusState.toolType == ToolType::UNKNOWN) {
mStylusState.toolType = ToolType::STYLUS;
}
if (mRawPressureAxis.valid) {
auto rawPressure = static_cast<float>(mSingleTouchMotionAccumulator.getAbsolutePressure());
mStylusState.pressure = (rawPressure - mRawPressureAxis.minValue) /
static_cast<float>(mRawPressureAxis.maxValue - mRawPressureAxis.minValue);
} else if (mTouchButtonAccumulator.hasButtonTouch()) {
mStylusState.pressure = mTouchButtonAccumulator.isHovering() ? 0.0f : 1.0f;
}
mStylusState.buttons = mTouchButtonAccumulator.getButtonState();
return getContext()->dispatchExternalStylusState(mStylusState);
}
} // namespace android
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