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1 // Copyright 2016 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 <limits> | |
6 | |
7 #include "ash/common/system/tray/size_range_layout.h" | |
8 | |
9 #include "base/logging.h" | |
10 #include "ui/views/layout/fill_layout.h" | |
11 | |
12 namespace ash { | |
13 | |
14 // static | |
15 | |
16 gfx::Size SizeRangeLayout::AbsoluteMinSize() { | |
17 const int kMinSize = 0; | |
18 return gfx::Size(kMinSize, kMinSize); | |
19 } | |
20 | |
21 gfx::Size SizeRangeLayout::AbsoluteMaxSize() { | |
22 const int kMaxSize = std::numeric_limits<int>::max(); | |
23 return gfx::Size(kMaxSize, kMaxSize); | |
24 } | |
25 | |
26 // Non static | |
27 | |
28 SizeRangeLayout::SizeRangeLayout() | |
29 : SizeRangeLayout(AbsoluteMinSize(), AbsoluteMaxSize()) {} | |
30 | |
31 SizeRangeLayout::SizeRangeLayout(const gfx::Size& min_size, | |
32 const gfx::Size& max_size) | |
33 : layout_manager_(new views::FillLayout()), | |
34 min_size_(AbsoluteMinSize()), | |
35 max_size_(AbsoluteMaxSize()) { | |
36 SetMinSize(min_size); | |
37 SetMaxSize(max_size); | |
38 } | |
39 | |
40 SizeRangeLayout::~SizeRangeLayout() {} | |
41 | |
42 void SizeRangeLayout::SetSize(const gfx::Size& size) { | |
43 SetMinSize(size); | |
44 SetMaxSize(size); | |
45 } | |
46 | |
47 void SizeRangeLayout::SetMinSize(const gfx::Size& size) { | |
48 min_size_ = size; | |
49 min_size_.SetToMax(gfx::Size()); | |
50 max_size_.SetToMax(min_size_); | |
51 } | |
52 | |
53 void SizeRangeLayout::SetMaxSize(const gfx::Size& size) { | |
54 max_size_ = size; | |
55 max_size_.SetToMax(gfx::Size()); | |
56 min_size_.SetToMin(max_size_); | |
57 } | |
58 | |
59 void SizeRangeLayout::SetLayoutManager( | |
60 std::unique_ptr<LayoutManager> layout_manager) { | |
61 DCHECK(layout_manager_); | |
62 layout_manager_ = std::move(layout_manager); | |
63 layout_manager_->Installed(host_); | |
64 } | |
65 | |
66 void SizeRangeLayout::Installed(views::View* host) { | |
67 DCHECK(!host_); | |
68 host_ = host; | |
69 layout_manager_->Installed(host); | |
70 } | |
71 | |
72 void SizeRangeLayout::Layout(views::View* host) { | |
73 layout_manager_->Layout(host); | |
74 } | |
75 | |
76 gfx::Size SizeRangeLayout::GetPreferredSize(const views::View* host) const { | |
77 gfx::Size preferred_size = layout_manager_->GetPreferredSize(host); | |
78 ClampSizeToRange(&preferred_size); | |
79 return preferred_size; | |
80 } | |
81 | |
82 int SizeRangeLayout::GetPreferredHeightForWidth(const views::View* host, | |
83 int width) const { | |
84 const int height = layout_manager_->GetPreferredHeightForWidth(host, width); | |
85 gfx::Size size(0, height); | |
86 ClampSizeToRange(&size); | |
87 return size.height(); | |
88 } | |
89 | |
90 void SizeRangeLayout::ViewAdded(views::View* host, views::View* view) { | |
91 layout_manager_->ViewAdded(host, view); | |
92 } | |
93 | |
94 void SizeRangeLayout::ViewRemoved(views::View* host, views::View* view) { | |
95 layout_manager_->ViewRemoved(host, view); | |
96 } | |
97 | |
98 void SizeRangeLayout::ClampSizeToRange(gfx::Size* size) const { | |
99 size->SetToMax(min_size_); | |
100 size->SetToMin(max_size_); | |
101 } | |
102 | |
103 } // namespace ash | |
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