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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 #ifndef UI_GFX_SIZE_BASE_H_ | |
6 #define UI_GFX_SIZE_BASE_H_ | |
7 | |
8 #include "ui/gfx/gfx_export.h" | |
9 | |
10 namespace gfx { | |
11 | |
12 // A size has width and height values. | |
13 template<typename Class, typename Type> | |
14 class GFX_EXPORT SizeBase { | |
15 public: | |
16 Type width() const { return width_; } | |
17 Type height() const { return height_; } | |
18 | |
19 Type GetArea() const { return width_ * height_; } | |
20 | |
21 void SetSize(Type width, Type height) { | |
22 set_width(width); | |
23 set_height(height); | |
24 } | |
25 | |
26 void Enlarge(Type width, Type height) { | |
27 set_width(width_ + width); | |
28 set_height(height_ + height); | |
29 } | |
30 | |
31 void set_width(Type width) { | |
32 width_ = width < 0 ? 0 : width; | |
33 } | |
34 void set_height(Type height) { | |
35 height_ = height < 0 ? 0 : height; | |
36 } | |
37 | |
38 void SetToMin(const Class& other) { | |
39 width_ = width_ <= other.width_ ? width_ : other.width_; | |
40 height_ = height_ <= other.height_ ? height_ : other.height_; | |
41 } | |
42 | |
43 void SetToMax(const Class& other) { | |
44 width_ = width_ >= other.width_ ? width_ : other.width_; | |
45 height_ = height_ >= other.height_ ? height_ : other.height_; | |
46 } | |
47 | |
48 bool IsEmpty() const { | |
49 return (width_ == 0) || (height_ == 0); | |
50 } | |
51 | |
52 protected: | |
53 SizeBase(Type width, Type height) | |
54 : width_(width < 0 ? 0 : width), | |
55 height_(height < 0 ? 0 : height) { | |
56 } | |
57 | |
58 // Destructor is intentionally made non virtual and protected. | |
59 // Do not make this public. | |
60 ~SizeBase() {} | |
61 | |
62 private: | |
63 Type width_; | |
64 Type height_; | |
65 }; | |
66 | |
67 } // namespace gfx | |
68 | |
69 #endif // UI_GFX_SIZE_BASE_H_ | |
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