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ash / metrics / touch_usage_metrics_recorder.cc [blame]
// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/metrics/touch_usage_metrics_recorder.h"
#include "ash/shell.h"
#include "base/metrics/histogram_functions.h"
#include "base/strings/strcat.h"
#include "ui/display/screen.h"
#include "ui/events/event.h"
#include "ui/events/types/event_type.h"
namespace ash {
TouchscreenUsageRecorder::TouchscreenUsageRecorder(
const char* const histogram_name,
base::TimeDelta timer_duration,
base::TimeDelta max_bucket_time,
bool tablet_mode)
: histogram_name_(histogram_name),
max_bucket_time_(max_bucket_time),
tablet_mode_(tablet_mode),
timer_(FROM_HERE,
timer_duration,
base::BindRepeating(&TouchscreenUsageRecorder::LogUsage,
base::Unretained(this))) {}
TouchscreenUsageRecorder::~TouchscreenUsageRecorder() = default;
void TouchscreenUsageRecorder::RecordTouch() {
most_recent_touch_time_ = base::TimeTicks::Now();
if (!timer_.IsRunning()) {
start_time_ = most_recent_touch_time_;
}
timer_.Reset();
}
void TouchscreenUsageRecorder::LogUsage() {
// Usage is only logged if two consecutive touches are detected.
if (start_time_ != most_recent_touch_time_) {
base::TimeDelta diff = most_recent_touch_time_ - start_time_;
base::UmaHistogramCustomTimes(
GetHistogramNameWithMode(histogram_name_, tablet_mode_), diff,
base::Seconds(1), max_bucket_time_, 100);
}
}
// TODO(b/270610982): Temporarily recording values for multiple timer periods
// in order to assess which ones gives the best usage result. Will remove
// other timers when a decision has been reached.
TouchUsageMetricsRecorder::TouchUsageMetricsRecorder()
: clamshell_recorders_{TouchscreenUsageRecorder(
kTouchscreenUsage5SecondsHistogramName,
base::Seconds(5),
base::Minutes(20),
false),
TouchscreenUsageRecorder(
kTouchscreenUsage15SecondsHistogramName,
base::Seconds(15),
base::Minutes(40),
false),
TouchscreenUsageRecorder(
kTouchscreenUsage30SecondsHistogramName,
base::Seconds(30),
base::Hours(1),
false),
TouchscreenUsageRecorder(
kTouchscreenUsage1MinuteHistogramName,
base::Minutes(1),
base::Hours(1.5),
false),
TouchscreenUsageRecorder(
kTouchscreenUsage3MinutesHistogramName,
base::Minutes(3),
base::Hours(2),
false),
TouchscreenUsageRecorder(
kTouchscreenUsage5MinutesHistogramName,
base::Minutes(5),
base::Hours(3),
false),
TouchscreenUsageRecorder(
kTouchscreenUsage10MinutesHistogramName,
base::Minutes(10),
base::Hours(6),
false)},
tablet_recorders_{
TouchscreenUsageRecorder(kTouchscreenUsage5SecondsHistogramName,
base::Seconds(5),
base::Minutes(20),
true),
TouchscreenUsageRecorder(kTouchscreenUsage15SecondsHistogramName,
base::Seconds(15),
base::Minutes(40),
true),
TouchscreenUsageRecorder(kTouchscreenUsage30SecondsHistogramName,
base::Seconds(30),
base::Hours(1),
true),
TouchscreenUsageRecorder(kTouchscreenUsage1MinuteHistogramName,
base::Minutes(1),
base::Hours(1.5),
true),
TouchscreenUsageRecorder(kTouchscreenUsage3MinutesHistogramName,
base::Minutes(3),
base::Hours(2),
true),
TouchscreenUsageRecorder(kTouchscreenUsage5MinutesHistogramName,
base::Minutes(5),
base::Hours(3),
true),
TouchscreenUsageRecorder(kTouchscreenUsage10MinutesHistogramName,
base::Minutes(10),
base::Hours(6),
true)}
{
Shell::Get()->AddPreTargetHandler(this);
}
TouchUsageMetricsRecorder::~TouchUsageMetricsRecorder() {
Shell::Get()->RemovePreTargetHandler(this);
}
void TouchUsageMetricsRecorder::OnTouchEvent(ui::TouchEvent* event) {
if (event->type() == ui::EventType::kTouchPressed) {
NotifyTouchscreenUsageRecorders();
}
}
void TouchUsageMetricsRecorder::NotifyTouchscreenUsageRecorders() {
std::array<TouchscreenUsageRecorder, 7>& recorders =
display::Screen::GetScreen()->InTabletMode() ? tablet_recorders_
: clamshell_recorders_;
for (TouchscreenUsageRecorder& recorder : recorders) {
recorder.RecordTouch();
}
}
const std::string GetHistogramNameWithMode(const char* const histogram_name,
bool tablet_mode) {
return base::StrCat(
{histogram_name, (tablet_mode ? ".TabletMode" : ".ClamshellMode")});
}
} // namespace ash