// 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