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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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