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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_chromeos.h"
#include "base/logging.h"
#include "chromeos/dbus/power_manager_client.h"
#include "ui/display/types/display_snapshot.h"
namespace ash {
ProjectingObserver::ProjectingObserver(
chromeos::PowerManagerClient* power_manager_client)
: has_internal_output_(false),
output_count_(0),
casting_session_count_(0),
power_manager_client_(power_manager_client) {
DCHECK(power_manager_client);
}
ProjectingObserver::~ProjectingObserver() {}
void ProjectingObserver::OnDisplayModeChanged(
const ui::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() == ui::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.
bool projecting = has_internal_output_ &&
(output_count_ + casting_session_count_ > 1);
power_manager_client_->SetIsProjecting(projecting);
}
} // namespace ash
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