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- // Copyright 2014 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/display/projecting_observer.h"
- #include "ash/shell.h"
- #include "ash/system/power/power_event_observer.h"
- #include "base/check_op.h"
- #include "chromeos/dbus/power/power_manager_client.h"
- #include "ui/display/types/display_snapshot.h"
- namespace ash {
- ProjectingObserver::ProjectingObserver(
- display::DisplayConfigurator* display_configurator)
- : display_configurator_(display_configurator) {
- if (Shell::HasInstance())
- Shell::Get()->AddShellObserver(this);
- if (display_configurator_)
- display_configurator_->AddObserver(this);
- }
- ProjectingObserver::~ProjectingObserver() {
- if (Shell::HasInstance())
- Shell::Get()->RemoveShellObserver(this);
- if (display_configurator_)
- display_configurator_->RemoveObserver(this);
- }
- void ProjectingObserver::OnDisplayModeChanged(
- const display::DisplayConfigurator::DisplayStateList& display_states) {
- has_internal_output_ = false;
- output_count_ = display_states.size();
- for (size_t i = 0; i < display_states.size(); ++i) {
- if (display_states[i]->type() ==
- display::DISPLAY_CONNECTION_TYPE_INTERNAL) {
- has_internal_output_ = true;
- break;
- }
- }
- SetIsProjecting();
- }
- void ProjectingObserver::OnCastingSessionStartedOrStopped(bool started) {
- if (started) {
- ++casting_session_count_;
- } else {
- DCHECK_GT(casting_session_count_, 0);
- --casting_session_count_;
- if (casting_session_count_ < 0)
- casting_session_count_ = 0;
- }
- SetIsProjecting();
- }
- void ProjectingObserver::SetIsProjecting() {
- // "Projecting" is defined as having more than 1 output connected while at
- // least one of them is an internal output.
- is_projecting_ =
- has_internal_output_ && (output_count_ + casting_session_count_ > 1);
- chromeos::PowerManagerClient::Get()->SetIsProjecting(is_projecting_);
- if (Shell::HasInstance())
- Shell::Get()->power_event_observer()->SetIsProjecting(is_projecting_);
- }
- } // namespace ash
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