ash/system/audio/mic_gain_slider_controller.cc

// Copyright 2020 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/system/audio/mic_gain_slider_controller.h"

#include "ash/constants/ash_features.h"
#include "ash/constants/quick_settings_catalogs.h"
#include "ash/system/audio/mic_gain_slider_view.h"
#include "base/metrics/user_metrics.h"
#include "base/metrics/user_metrics_action.h"

namespace ash {

namespace {
MicGainSliderController::MapDeviceSliderCallback* g_map_slider_device_callback =
    nullptr;
}  // namespace

MicGainSliderController::MicGainSliderController() = default;

MicGainSliderController::~MicGainSliderController() = default;

std::unique_ptr<MicGainSliderView> MicGainSliderController::CreateMicGainSlider(
    uint64_t device_id,
    bool internal) {
  std::unique_ptr<MicGainSliderView> slider =
      std::make_unique<MicGainSliderView>(this, device_id, internal);
  if (g_map_slider_device_callback)
    g_map_slider_device_callback->Run(device_id, slider.get());
  return slider;
}

// static
void MicGainSliderController::SetMapDeviceSliderCallbackForTest(
    MapDeviceSliderCallback* map_slider_device_callback) {
  g_map_slider_device_callback = map_slider_device_callback;
}

views::View* MicGainSliderController::CreateView() {
  return new MicGainSliderView(this);
}

QsSliderCatalogName MicGainSliderController::GetCatalogName() {
  return QsSliderCatalogName::kMicGain;
}

void MicGainSliderController::SliderValueChanged(
    views::Slider* sender,
    float value,
    float old_value,
    views::SliderChangeReason reason) {
  if (reason != views::SliderChangeReason::kByUser)
    return;

  // Unmute if muted.
  if (CrasAudioHandler::Get()->IsInputMuted()) {
    CrasAudioHandler::Get()->SetMuteForDevice(
        CrasAudioHandler::Get()->GetPrimaryActiveInputNode(), false);
  }

  const int level = value * 100;
  if (level != CrasAudioHandler::Get()->GetInputGainPercent()) {
    TrackValueChangeUMA(/*going_up=*/level >
                        CrasAudioHandler::Get()->GetInputGainPercent());
  }

  // For QsRevamp: Manually sets the mute state since we don't distinguish muted
  // and level is 0 state in QsRevamp.
  if (features::IsQsRevampEnabled() && level == 0) {
    CrasAudioHandler::Get()->SetMuteForDevice(
        CrasAudioHandler::Get()->GetPrimaryActiveInputNode(), true);
  }
  CrasAudioHandler::Get()->SetInputGainPercent(level);
}

void MicGainSliderController::SliderButtonPressed() {
  auto* const audio_handler = CrasAudioHandler::Get();
  const bool mute = !audio_handler->IsInputMuted();

  TrackToggleUMA(/*target_toggle_state=*/mute);

  audio_handler->SetMuteForDevice(audio_handler->GetPrimaryActiveInputNode(),
                                  mute);
}

}  // namespace ash