1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/*
* 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.
*/
// clang-format off
#include "../Macros.h"
// clang-format on
#include "RotaryEncoderInputMapper.h"
#include <utils/Timers.h>
#include <optional>
#include "CursorScrollAccumulator.h"
namespace android {
RotaryEncoderInputMapper::RotaryEncoderInputMapper(InputDeviceContext& deviceContext,
const InputReaderConfiguration& readerConfig)
: InputMapper(deviceContext, readerConfig), mOrientation(ui::ROTATION_0) {
mSource = AINPUT_SOURCE_ROTARY_ENCODER;
}
RotaryEncoderInputMapper::~RotaryEncoderInputMapper() {}
uint32_t RotaryEncoderInputMapper::getSources() const {
return mSource;
}
void RotaryEncoderInputMapper::populateDeviceInfo(InputDeviceInfo& info) {
InputMapper::populateDeviceInfo(info);
if (mRotaryEncoderScrollAccumulator.haveRelativeVWheel()) {
const PropertyMap& config = getDeviceContext().getConfiguration();
std::optional<float> res = config.getFloat("device.res");
if (!res.has_value()) {
ALOGW("Rotary Encoder device configuration file didn't specify resolution!\n");
}
std::optional<float> scalingFactor = config.getFloat("device.scalingFactor");
if (!scalingFactor.has_value()) {
ALOGW("Rotary Encoder device configuration file didn't specify scaling factor,"
"default to 1.0!\n");
}
mScalingFactor = scalingFactor.value_or(1.0f);
info.addMotionRange(AMOTION_EVENT_AXIS_SCROLL, mSource, -1.0f, 1.0f, 0.0f, 0.0f,
res.value_or(0.0f) * mScalingFactor);
}
}
void RotaryEncoderInputMapper::dump(std::string& dump) {
dump += INDENT2 "Rotary Encoder Input Mapper:\n";
dump += StringPrintf(INDENT3 "HaveWheel: %s\n",
toString(mRotaryEncoderScrollAccumulator.haveRelativeVWheel()));
dump += StringPrintf(INDENT3 "HaveSlopController: %s\n", toString(mSlopController != nullptr));
}
std::list<NotifyArgs> RotaryEncoderInputMapper::reconfigure(nsecs_t when,
const InputReaderConfiguration& config,
ConfigurationChanges changes) {
std::list<NotifyArgs> out = InputMapper::reconfigure(when, config, changes);
if (!changes.any()) {
mRotaryEncoderScrollAccumulator.configure(getDeviceContext());
const PropertyMap& propertyMap = getDeviceContext().getConfiguration();
float slopThreshold = propertyMap.getInt("rotary_encoder.slop_threshold").value_or(0);
int32_t slopDurationNs = milliseconds_to_nanoseconds(
propertyMap.getInt("rotary_encoder.slop_duration_ms").value_or(0));
if (slopThreshold > 0 && slopDurationNs > 0) {
mSlopController = std::make_unique<SlopController>(slopThreshold, slopDurationNs);
} else {
mSlopController = nullptr;
}
}
if (!changes.any() || changes.test(InputReaderConfiguration::Change::DISPLAY_INFO)) {
std::optional<DisplayViewport> internalViewport =
config.getDisplayViewportByType(ViewportType::INTERNAL);
if (internalViewport) {
mOrientation = internalViewport->orientation;
} else {
mOrientation = ui::ROTATION_0;
}
}
return out;
}
std::list<NotifyArgs> RotaryEncoderInputMapper::reset(nsecs_t when) {
mRotaryEncoderScrollAccumulator.reset(getDeviceContext());
return InputMapper::reset(when);
}
std::list<NotifyArgs> RotaryEncoderInputMapper::process(const RawEvent* rawEvent) {
std::list<NotifyArgs> out;
mRotaryEncoderScrollAccumulator.process(rawEvent);
if (rawEvent->type == EV_SYN && rawEvent->code == SYN_REPORT) {
out += sync(rawEvent->when, rawEvent->readTime);
}
return out;
}
std::list<NotifyArgs> RotaryEncoderInputMapper::sync(nsecs_t when, nsecs_t readTime) {
std::list<NotifyArgs> out;
float scroll = mRotaryEncoderScrollAccumulator.getRelativeVWheel();
if (mSlopController) {
scroll = mSlopController->consumeEvent(when, scroll);
}
bool scrolled = scroll != 0;
// Send motion event.
if (scrolled) {
int32_t metaState = getContext()->getGlobalMetaState();
// This is not a pointer, so it's not associated with a display.
int32_t displayId = ADISPLAY_ID_NONE;
if (mOrientation == ui::ROTATION_180) {
scroll = -scroll;
}
PointerCoords pointerCoords;
pointerCoords.clear();
pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_SCROLL, scroll * mScalingFactor);
PointerProperties pointerProperties;
pointerProperties.clear();
pointerProperties.id = 0;
pointerProperties.toolType = ToolType::UNKNOWN;
uint32_t policyFlags = 0;
if (getDeviceContext().isExternal()) {
policyFlags |= POLICY_FLAG_WAKE;
}
out.push_back(
NotifyMotionArgs(getContext()->getNextId(), when, readTime, getDeviceId(), mSource,
displayId, policyFlags, AMOTION_EVENT_ACTION_SCROLL, 0, 0,
metaState, /*buttonState=*/0, MotionClassification::NONE,
AMOTION_EVENT_EDGE_FLAG_NONE, 1, &pointerProperties,
&pointerCoords, 0, 0, AMOTION_EVENT_INVALID_CURSOR_POSITION,
AMOTION_EVENT_INVALID_CURSOR_POSITION, 0, /*videoFrames=*/{}));
}
mRotaryEncoderScrollAccumulator.finishSync();
return out;
}
} // namespace android
|
