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_GEOMETRY_SIZE_BASE_H_ 6 #define UI_GFX_GEOMETRY_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_GEOMETRY_SIZE_BASE_H_ 70
