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- // Copyright 2021 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 "ash/quick_pair/feature_status_tracker/screen_state_enabled_provider.h"
- #include "ash/shell.h"
- #include "ui/display/types/display_mode.h"
- #include "ui/display/types/display_snapshot.h"
- namespace ash {
- namespace quick_pair {
- ScreenStateEnabledProvider::ScreenStateEnabledProvider() {
- auto* configurator = Shell::Get()->display_configurator();
- DCHECK(configurator);
- configurator_observation_.Observe(configurator);
- // IsDisplayOn() is true for a screen with brightness 0 but in practice
- // that edge case does not occur at initialization. We cover that edge
- // case later but we don't have access to a DisplayStateList here.
- SetEnabledAndInvokeCallback(configurator->IsDisplayOn());
- }
- ScreenStateEnabledProvider::~ScreenStateEnabledProvider() = default;
- void ScreenStateEnabledProvider::OnDisplayModeChanged(
- const display::DisplayConfigurator::DisplayStateList& display_states) {
- for (const display::DisplaySnapshot* state : display_states) {
- // If a display has current_mode, then it is (1) an external monitor or (2)
- // the internal display with non-zero brightness and an open laptop lid.
- if (state->current_mode()) {
- SetEnabledAndInvokeCallback(true);
- return;
- }
- }
- SetEnabledAndInvokeCallback(false);
- }
- } // namespace quick_pair
- } // namespace ash
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