1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
// Copyright 2014 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/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
|
