blob: 2fe91172bf583d45621cc2564c80c11cfc8c0411 (
plain)
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
|
// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/events/ozone/evdev/touch_filter/neural_stylus_palm_report_filter.h"
#include "base/metrics/histogram_macros.h"
namespace ui {
NeuralStylusReportFilter::NeuralStylusReportFilter(
SharedPalmDetectionFilterState* shared_palm_state)
: PalmDetectionFilter(shared_palm_state) {}
NeuralStylusReportFilter::~NeuralStylusReportFilter() {}
bool NeuralStylusReportFilter::CompatibleWithNeuralStylusReportFilter(
const EventDeviceInfo& devinfo) {
return devinfo.HasStylus();
}
void NeuralStylusReportFilter::Filter(
const std::vector<InProgressTouchEvdev>& touches,
base::TimeTicks time,
std::bitset<kNumTouchEvdevSlots>* slots_to_hold,
std::bitset<kNumTouchEvdevSlots>* slots_to_suppress) {
bool should_update = false;
for (const auto& touch : touches) {
// Is a stylus detected? We should be updating.
if (touch.altered && touch.stylus_button) {
should_update = true;
continue;
}
}
// Only update once when a stylus is detected.
if (!previous_update_ && should_update) {
// Once a stylus is detected, we report.
base::TimeDelta palm_age =
time - shared_palm_state_->latest_palm_touch_time;
base::TimeDelta finger_age =
time - shared_palm_state_->latest_finger_touch_time;
UMA_HISTOGRAM_TIMES(kNeuralPalmAge, palm_age);
UMA_HISTOGRAM_TIMES(kNeuralFingerAge, finger_age);
UMA_HISTOGRAM_COUNTS_100(kNeuralPalmTouchCount,
shared_palm_state_->active_palm_touches);
}
previous_update_ = should_update;
slots_to_hold->reset();
slots_to_suppress->reset();
}
const char NeuralStylusReportFilter::kFilterName[] = "NeuralStylusReportFilter";
const char NeuralStylusReportFilter::kNeuralPalmAge[] =
"Ozone.NeuralStylusReport.PalmAgeBeforeStylus";
const char NeuralStylusReportFilter::kNeuralFingerAge[] =
"Ozone.NeuralStylusReport.FingerAgeBeforeStylus";
const char NeuralStylusReportFilter::kNeuralPalmTouchCount[] =
"Ozone.NeuralStylusReport.ActivePalmTouchCount";
std::string NeuralStylusReportFilter::FilterNameForTesting() const {
return kFilterName;
}
} // namespace ui
|
