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93 lines
3.1 KiB
93 lines
3.1 KiB
7 months ago
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/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "../Macros.h"
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#include "ExternalStylusInputMapper.h"
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#include "SingleTouchMotionAccumulator.h"
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#include "TouchButtonAccumulator.h"
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namespace android {
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ExternalStylusInputMapper::ExternalStylusInputMapper(InputDeviceContext& deviceContext)
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: InputMapper(deviceContext) {}
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uint32_t ExternalStylusInputMapper::getSources() {
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return AINPUT_SOURCE_STYLUS;
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}
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void ExternalStylusInputMapper::populateDeviceInfo(InputDeviceInfo* info) {
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InputMapper::populateDeviceInfo(info);
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info->addMotionRange(AMOTION_EVENT_AXIS_PRESSURE, AINPUT_SOURCE_STYLUS, 0.0f, 1.0f, 0.0f, 0.0f,
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0.0f);
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}
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void ExternalStylusInputMapper::dump(std::string& dump) {
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dump += INDENT2 "External Stylus Input Mapper:\n";
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dump += INDENT3 "Raw Stylus Axes:\n";
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dumpRawAbsoluteAxisInfo(dump, mRawPressureAxis, "Pressure");
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dump += INDENT3 "Stylus State:\n";
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dumpStylusState(dump, mStylusState);
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}
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void ExternalStylusInputMapper::configure(nsecs_t when, const InputReaderConfiguration* config,
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uint32_t changes) {
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getAbsoluteAxisInfo(ABS_PRESSURE, &mRawPressureAxis);
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mTouchButtonAccumulator.configure(getDeviceContext());
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}
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void ExternalStylusInputMapper::reset(nsecs_t when) {
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mSingleTouchMotionAccumulator.reset(getDeviceContext());
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mTouchButtonAccumulator.reset(getDeviceContext());
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InputMapper::reset(when);
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}
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void ExternalStylusInputMapper::process(const RawEvent* rawEvent) {
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mSingleTouchMotionAccumulator.process(rawEvent);
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mTouchButtonAccumulator.process(rawEvent);
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if (rawEvent->type == EV_SYN && rawEvent->code == SYN_REPORT) {
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sync(rawEvent->when);
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}
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}
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void ExternalStylusInputMapper::sync(nsecs_t when) {
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mStylusState.clear();
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mStylusState.when = when;
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mStylusState.toolType = mTouchButtonAccumulator.getToolType();
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if (mStylusState.toolType == AMOTION_EVENT_TOOL_TYPE_UNKNOWN) {
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mStylusState.toolType = AMOTION_EVENT_TOOL_TYPE_STYLUS;
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}
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int32_t pressure = mSingleTouchMotionAccumulator.getAbsolutePressure();
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if (mRawPressureAxis.valid) {
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mStylusState.pressure = float(pressure) / mRawPressureAxis.maxValue;
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} else if (mTouchButtonAccumulator.isToolActive()) {
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mStylusState.pressure = 1.0f;
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} else {
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mStylusState.pressure = 0.0f;
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}
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mStylusState.buttons = mTouchButtonAccumulator.getButtonState();
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getContext()->dispatchExternalStylusState(mStylusState);
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}
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} // namespace android
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