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137 lines
5.0 KiB
137 lines
5.0 KiB
/*
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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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// clang-format off
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#include "../Macros.h"
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// clang-format on
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#include "RotaryEncoderInputMapper.h"
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#include "CursorScrollAccumulator.h"
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namespace android {
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RotaryEncoderInputMapper::RotaryEncoderInputMapper(InputDeviceContext& deviceContext)
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: InputMapper(deviceContext), mOrientation(DISPLAY_ORIENTATION_0) {
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mSource = AINPUT_SOURCE_ROTARY_ENCODER;
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}
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RotaryEncoderInputMapper::~RotaryEncoderInputMapper() {}
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uint32_t RotaryEncoderInputMapper::getSources() {
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return mSource;
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}
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void RotaryEncoderInputMapper::populateDeviceInfo(InputDeviceInfo* info) {
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InputMapper::populateDeviceInfo(info);
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if (mRotaryEncoderScrollAccumulator.haveRelativeVWheel()) {
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float res = 0.0f;
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if (!getDeviceContext().getConfiguration().tryGetProperty(String8("device.res"), res)) {
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ALOGW("Rotary Encoder device configuration file didn't specify resolution!\n");
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}
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if (!getDeviceContext().getConfiguration().tryGetProperty(String8("device.scalingFactor"),
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mScalingFactor)) {
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ALOGW("Rotary Encoder device configuration file didn't specify scaling factor,"
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"default to 1.0!\n");
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mScalingFactor = 1.0f;
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}
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info->addMotionRange(AMOTION_EVENT_AXIS_SCROLL, mSource, -1.0f, 1.0f, 0.0f, 0.0f,
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res * mScalingFactor);
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}
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}
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void RotaryEncoderInputMapper::dump(std::string& dump) {
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dump += INDENT2 "Rotary Encoder Input Mapper:\n";
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dump += StringPrintf(INDENT3 "HaveWheel: %s\n",
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toString(mRotaryEncoderScrollAccumulator.haveRelativeVWheel()));
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}
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void RotaryEncoderInputMapper::configure(nsecs_t when, const InputReaderConfiguration* config,
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uint32_t changes) {
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InputMapper::configure(when, config, changes);
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if (!changes) {
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mRotaryEncoderScrollAccumulator.configure(getDeviceContext());
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}
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if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
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std::optional<DisplayViewport> internalViewport =
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config->getDisplayViewportByType(ViewportType::INTERNAL);
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if (internalViewport) {
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mOrientation = internalViewport->orientation;
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} else {
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mOrientation = DISPLAY_ORIENTATION_0;
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}
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}
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}
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void RotaryEncoderInputMapper::reset(nsecs_t when) {
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mRotaryEncoderScrollAccumulator.reset(getDeviceContext());
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InputMapper::reset(when);
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}
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void RotaryEncoderInputMapper::process(const RawEvent* rawEvent) {
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mRotaryEncoderScrollAccumulator.process(rawEvent);
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if (rawEvent->type == EV_SYN && rawEvent->code == SYN_REPORT) {
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sync(rawEvent->when, rawEvent->readTime);
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}
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}
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void RotaryEncoderInputMapper::sync(nsecs_t when, nsecs_t readTime) {
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PointerCoords pointerCoords;
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pointerCoords.clear();
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PointerProperties pointerProperties;
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pointerProperties.clear();
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pointerProperties.id = 0;
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pointerProperties.toolType = AMOTION_EVENT_TOOL_TYPE_UNKNOWN;
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float scroll = mRotaryEncoderScrollAccumulator.getRelativeVWheel();
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bool scrolled = scroll != 0;
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// This is not a pointer, so it's not associated with a display.
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int32_t displayId = ADISPLAY_ID_NONE;
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// Moving the rotary encoder should wake the device (if specified).
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uint32_t policyFlags = 0;
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if (scrolled && getDeviceContext().isExternal()) {
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policyFlags |= POLICY_FLAG_WAKE;
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}
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if (mOrientation == DISPLAY_ORIENTATION_180) {
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scroll = -scroll;
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}
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// Send motion event.
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if (scrolled) {
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int32_t metaState = getContext()->getGlobalMetaState();
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pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_SCROLL, scroll * mScalingFactor);
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NotifyMotionArgs scrollArgs(getContext()->getNextId(), when, readTime, getDeviceId(),
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mSource, displayId, policyFlags, AMOTION_EVENT_ACTION_SCROLL, 0,
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0, metaState, /* buttonState */ 0, MotionClassification::NONE,
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AMOTION_EVENT_EDGE_FLAG_NONE, 1, &pointerProperties,
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&pointerCoords, 0, 0, AMOTION_EVENT_INVALID_CURSOR_POSITION,
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AMOTION_EVENT_INVALID_CURSOR_POSITION, 0, /* videoFrames */ {});
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getListener()->notifyMotion(&scrollArgs);
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}
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mRotaryEncoderScrollAccumulator.finishSync();
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}
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} // namespace android
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