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// Copyright 2024 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/wm_feature_metrics_recorder.h"
#include <array>
#include "ash/session/session_controller_impl.h"
#include "ash/shell.h"
#include "ash/wm/mru_window_tracker.h"
#include "ash/wm/window_state.h"
#include "ash/wm/window_util.h"
#include "base/metrics/histogram_functions.h"
#include "base/strings/strcat.h"
#include "chromeos/ui/base/app_types.h"
#include "chromeos/ui/base/window_properties.h"
namespace ash {
namespace {
// The Metrics prefix for WM features.
constexpr char kWMFeatureMetricPrefix[] = "Ash.Wm.";
// Pre-defined Window size ranges.
constexpr std::array<int, 4> kWidthRange = {0, 800, 1024, 1400};
constexpr std::array<int, 4> kHeightRange = {0, 600, 728, 900};
WMFeatureMetricsRecorder::WindowSizeRange GetWindowSizeRange(
const gfx::Size& window_size) {
const int width = window_size.width();
const int height = window_size.height();
int width_index = 0;
for (size_t i = 0; i < sizeof(kWidthRange) / sizeof(int) - 1; ++i) {
if (width > kWidthRange[i] && width <= kWidthRange[i + 1]) {
width_index = i;
break;
}
if (width > kWidthRange[i + 1]) {
width_index = i + 1;
}
}
int height_index = 0;
for (size_t j = 0; j < sizeof(kHeightRange) / sizeof(int) - 1; ++j) {
if (height > kHeightRange[j] && height <= kHeightRange[j + 1]) {
height_index = j;
break;
}
if (height > kHeightRange[j + 1]) {
height_index = j + 1;
}
}
return static_cast<WMFeatureMetricsRecorder::WindowSizeRange>(
width_index * (sizeof(kHeightRange) / sizeof(int)) + height_index);
}
// Records the window state and layout related metrics for all windows and the
// current active window.
void RecordWindowLayoutAndStatePeriodically() {
// Get all windows and their placement configuration.
auto windows =
Shell::Get()->mru_window_tracker()->BuildMruWindowList(kAllDesks);
const std::string metrics_prefix =
WMFeatureMetricsRecorder::GetFeatureMetricsPrefix(
WMFeatureMetricsRecorder::WMFeatureType::kWindowLayoutState);
// Report the number of the opened windows.
base::UmaHistogramCounts100(metrics_prefix + "WindowNumbers", windows.size());
aura::Window* active_window = window_util::GetActiveWindow();
for (aura::Window* window : windows) {
const bool is_active_window = window == active_window;
std::vector<std::string> metrics_suffixes;
// Report the window state types for all opened windows and the active
// window.
auto state_type = WindowState::Get(window)->GetStateType();
metrics_suffixes.push_back("AllWindowStates");
if (is_active_window) {
metrics_suffixes.push_back("ActiveWindowState");
}
for (const std::string& metrics_suffix : metrics_suffixes) {
base::UmaHistogramEnumeration(metrics_prefix + metrics_suffix,
state_type);
}
// Report the app types for all opened windows and the active window.
metrics_suffixes.clear();
metrics_suffixes.push_back("AllAppTypes");
if (is_active_window) {
metrics_suffixes.push_back("ActiveWindowAppType");
}
for (const std::string& metrics_suffix : metrics_suffixes) {
base::UmaHistogramEnumeration(metrics_prefix + metrics_suffix,
window->GetProperty(chromeos::kAppTypeKey));
}
// Report the sizes for all windows and the active window.
metrics_suffixes.clear();
metrics_suffixes.push_back("AllWindowSizes");
if (chromeos::IsNormalWindowStateType(state_type)) {
metrics_suffixes.push_back("FreeformedWindowSizes");
}
if (is_active_window) {
metrics_suffixes.push_back("ActiveWindowSize");
}
const WMFeatureMetricsRecorder::WindowSizeRange size_range =
GetWindowSizeRange(window->bounds().size());
for (const std::string& metrics_suffix : metrics_suffixes) {
base::UmaHistogramEnumeration(metrics_prefix + metrics_suffix,
size_range);
}
}
}
} // namespace
WMFeatureMetricsRecorder::WMFeatureMetricsRecorder() = default;
WMFeatureMetricsRecorder::~WMFeatureMetricsRecorder() = default;
// static
std::string WMFeatureMetricsRecorder::GetFeatureMetricsPrefix(
const WMFeatureType& wm_feature_type) {
switch (wm_feature_type) {
case WMFeatureType::kWindowLayoutState:
return base::StrCat({kWMFeatureMetricPrefix, "WindowLayoutState."});
}
}
void WMFeatureMetricsRecorder::RecordPeriodicalWMMetrics() {
RecordWindowLayoutAndStatePeriodically();
}
} // namespace ash
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