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Issue 2736573002: chromeos: Move files in //ash/common to //ash, part 2 (Closed)
Patch Set: Created 3 years, 9 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "ash/common/wm/screen_dimmer.h"
6
7 #include "ash/common/wm/container_finder.h"
8 #include "ash/common/wm/window_dimmer.h"
9 #include "ash/common/wm_shell.h"
10 #include "ash/common/wm_window.h"
11 #include "ash/common/wm_window_user_data.h"
12 #include "ash/public/cpp/shell_window_ids.h"
13 #include "base/memory/ptr_util.h"
14
15 namespace ash {
16 namespace {
17
18 // Opacity when it's dimming the entire screen.
19 const float kDimmingLayerOpacityForRoot = 0.4f;
20
21 // Opacity for lock screen.
22 const float kDimmingLayerOpacityForLockScreen = 0.5f;
23
24 } // namespace
25
26 ScreenDimmer::ScreenDimmer(Container container)
27 : container_(container),
28 is_dimming_(false),
29 at_bottom_(false),
30 window_dimmers_(base::MakeUnique<WmWindowUserData<WindowDimmer>>()) {
31 WmShell::Get()->AddShellObserver(this);
32 }
33
34 ScreenDimmer::~ScreenDimmer() {
35 // Usage in chrome results in ScreenDimmer outliving the shell.
36 if (WmShell::HasInstance())
37 WmShell::Get()->RemoveShellObserver(this);
38 }
39
40 void ScreenDimmer::SetDimming(bool should_dim) {
41 if (should_dim == is_dimming_)
42 return;
43 is_dimming_ = should_dim;
44
45 Update(should_dim);
46 }
47
48 std::vector<WmWindow*> ScreenDimmer::GetAllContainers() {
49 return container_ == Container::ROOT
50 ? WmShell::Get()->GetAllRootWindows()
51 : wm::GetContainersFromAllRootWindows(
52 ash::kShellWindowId_LockScreenContainersContainer);
53 }
54
55 void ScreenDimmer::OnRootWindowAdded(WmWindow* root_window) {
56 Update(is_dimming_);
57 }
58
59 void ScreenDimmer::Update(bool should_dim) {
60 for (WmWindow* container : GetAllContainers()) {
61 WindowDimmer* window_dimmer = window_dimmers_->Get(container);
62 if (should_dim) {
63 if (!window_dimmer) {
64 window_dimmers_->Set(container,
65 base::MakeUnique<WindowDimmer>(container));
66 window_dimmer = window_dimmers_->Get(container);
67 window_dimmer->SetDimOpacity(container_ == Container::ROOT
68 ? kDimmingLayerOpacityForRoot
69 : kDimmingLayerOpacityForLockScreen);
70 }
71 if (at_bottom_)
72 container->StackChildAtBottom(window_dimmer->window());
73 else
74 container->StackChildAtTop(window_dimmer->window());
75 window_dimmer->window()->Show();
76 } else if (window_dimmer) {
77 window_dimmers_->Set(container, nullptr);
78 }
79 }
80 }
81
82 } // namespace ash
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