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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 2015 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/window_dimmer.h"
6
7 #include <memory>
8
9 #include "ash/common/wm_shell.h"
10 #include "ash/common/wm_window.h"
11 #include "base/time/time.h"
12 #include "ui/aura/window.h"
13 #include "ui/compositor/layer.h"
14 #include "ui/wm/core/window_animations.h"
15
16 namespace ash {
17 namespace {
18
19 const int kDefaultDimAnimationDurationMs = 200;
20
21 const float kDefaultDimOpacity = 0.5f;
22
23 } // namespace
24
25 WindowDimmer::WindowDimmer(WmWindow* parent)
26 : parent_(parent),
27 window_(WmShell::Get()->NewWindow(ui::wm::WINDOW_TYPE_NORMAL,
28 ui::LAYER_SOLID_COLOR)) {
29 window_->SetVisibilityChangesAnimated();
30 window_->SetVisibilityAnimationType(
31 ::wm::WINDOW_VISIBILITY_ANIMATION_TYPE_FADE);
32 window_->SetVisibilityAnimationDuration(
33 base::TimeDelta::FromMilliseconds(kDefaultDimAnimationDurationMs));
34 window_->aura_window()->AddObserver(this);
35
36 SetDimOpacity(kDefaultDimOpacity);
37
38 parent->AddChild(window_);
39 parent->aura_window()->AddObserver(this);
40 parent->StackChildAtTop(window_);
41
42 window_->SetBounds(gfx::Rect(parent_->GetBounds().size()));
43 }
44
45 WindowDimmer::~WindowDimmer() {
46 if (parent_)
47 parent_->aura_window()->RemoveObserver(this);
48 if (window_) {
49 window_->aura_window()->RemoveObserver(this);
50 window_->Destroy();
51 }
52 }
53
54 void WindowDimmer::SetDimOpacity(float target_opacity) {
55 DCHECK(window_);
56 window_->GetLayer()->SetColor(
57 SkColorSetA(SK_ColorBLACK, 255 * target_opacity));
58 }
59
60 void WindowDimmer::OnWindowBoundsChanged(aura::Window* window,
61 const gfx::Rect& old_bounds,
62 const gfx::Rect& new_bounds) {
63 if (WmWindow::Get(window) == parent_)
64 window_->SetBounds(gfx::Rect(new_bounds.size()));
65 }
66
67 void WindowDimmer::OnWindowDestroying(aura::Window* window) {
68 if (WmWindow::Get(window) == parent_) {
69 parent_->aura_window()->RemoveObserver(this);
70 parent_ = nullptr;
71 } else {
72 DCHECK_EQ(window_, WmWindow::Get(window));
73 window_->aura_window()->RemoveObserver(this);
74 window_ = nullptr;
75 }
76 }
77
78 void WindowDimmer::OnWindowHierarchyChanging(
79 const HierarchyChangeParams& params) {
80 if (WmWindow::Get(params.receiver) == window_ &&
81 params.target == params.receiver) {
82 // This may happen on a display change or some unexpected condition. Hide
83 // the window to ensure it isn't obscuring the wrong thing.
84 window_->Hide();
85 }
86 }
87
88 } // namespace ash
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