1 /* 2 * Copyright 2011 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkSize_DEFINED 9 #define SkSize_DEFINED 10 11 #include "SkScalar.h" 12 13 template <typename T> struct SkTSize { 14 T fWidth; 15 T fHeight; 16 MakeSkTSize17 static SkTSize Make(T w, T h) { 18 SkTSize s; 19 s.fWidth = w; 20 s.fHeight = h; 21 return s; 22 } 23 MakeEmptySkTSize24 static SkTSize MakeEmpty() { 25 return {0, 0}; 26 } 27 setSkTSize28 void set(T w, T h) { 29 fWidth = w; 30 fHeight = h; 31 } 32 33 /** Returns true iff fWidth == 0 && fHeight == 0 34 */ isZeroSkTSize35 bool isZero() const { 36 return 0 == fWidth && 0 == fHeight; 37 } 38 39 /** Returns true if either widht or height are <= 0 */ isEmptySkTSize40 bool isEmpty() const { 41 return fWidth <= 0 || fHeight <= 0; 42 } 43 44 /** Set the width and height to 0 */ setEmptySkTSize45 void setEmpty() { 46 fWidth = fHeight = 0; 47 } 48 widthSkTSize49 T width() const { return fWidth; } heightSkTSize50 T height() const { return fHeight; } 51 52 /** If width or height is < 0, it is set to 0 */ clampNegToZeroSkTSize53 void clampNegToZero() { 54 if (fWidth < 0) { 55 fWidth = 0; 56 } 57 if (fHeight < 0) { 58 fHeight = 0; 59 } 60 } 61 equalsSkTSize62 bool equals(T w, T h) const { 63 return fWidth == w && fHeight == h; 64 } 65 }; 66 67 template <typename T> 68 static inline bool operator==(const SkTSize<T>& a, const SkTSize<T>& b) { 69 return a.fWidth == b.fWidth && a.fHeight == b.fHeight; 70 } 71 72 template <typename T> 73 static inline bool operator!=(const SkTSize<T>& a, const SkTSize<T>& b) { 74 return !(a == b); 75 } 76 77 /////////////////////////////////////////////////////////////////////////////// 78 79 typedef SkTSize<int32_t> SkISize; 80 81 struct SkSize : public SkTSize<SkScalar> { MakeSkSize82 static SkSize Make(SkScalar w, SkScalar h) { 83 SkSize s; 84 s.fWidth = w; 85 s.fHeight = h; 86 return s; 87 } 88 MakeSkSize89 static SkSize Make(const SkISize& src) { 90 return Make(SkIntToScalar(src.width()), SkIntToScalar(src.height())); 91 } 92 93 SkSize& operator=(const SkISize& src) { 94 this->set(SkIntToScalar(src.fWidth), SkIntToScalar(src.fHeight)); 95 return *this; 96 } 97 toRoundSkSize98 SkISize toRound() const { 99 SkISize s; 100 s.set(SkScalarRoundToInt(fWidth), SkScalarRoundToInt(fHeight)); 101 return s; 102 } 103 toCeilSkSize104 SkISize toCeil() const { 105 SkISize s; 106 s.set(SkScalarCeilToInt(fWidth), SkScalarCeilToInt(fHeight)); 107 return s; 108 } 109 toFloorSkSize110 SkISize toFloor() const { 111 SkISize s; 112 s.set(SkScalarFloorToInt(fWidth), SkScalarFloorToInt(fHeight)); 113 return s; 114 } 115 }; 116 117 #endif 118