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 setSkTSize24 void set(T w, T h) { 25 fWidth = w; 26 fHeight = h; 27 } 28 29 /** Returns true iff fWidth == 0 && fHeight == 0 30 */ isZeroSkTSize31 bool isZero() const { 32 return 0 == fWidth && 0 == fHeight; 33 } 34 35 /** Returns true if either widht or height are <= 0 */ isEmptySkTSize36 bool isEmpty() const { 37 return fWidth <= 0 || fHeight <= 0; 38 } 39 40 /** Set the width and height to 0 */ setEmptySkTSize41 void setEmpty() { 42 fWidth = fHeight = 0; 43 } 44 widthSkTSize45 T width() const { return fWidth; } heightSkTSize46 T height() const { return fHeight; } 47 48 /** If width or height is < 0, it is set to 0 */ clampNegToZeroSkTSize49 void clampNegToZero() { 50 if (fWidth < 0) { 51 fWidth = 0; 52 } 53 if (fHeight < 0) { 54 fHeight = 0; 55 } 56 } 57 equalsSkTSize58 bool equals(T w, T h) const { 59 return fWidth == w && fHeight == h; 60 } 61 }; 62 63 template <typename T> 64 static inline bool operator==(const SkTSize<T>& a, const SkTSize<T>& b) { 65 return a.fWidth == b.fWidth && a.fHeight == b.fHeight; 66 } 67 68 template <typename T> 69 static inline bool operator!=(const SkTSize<T>& a, const SkTSize<T>& b) { 70 return !(a == b); 71 } 72 73 /////////////////////////////////////////////////////////////////////////////// 74 75 typedef SkTSize<int32_t> SkISize; 76 77 struct SkSize : public SkTSize<SkScalar> { MakeSkSize78 static SkSize Make(SkScalar w, SkScalar h) { 79 SkSize s; 80 s.fWidth = w; 81 s.fHeight = h; 82 return s; 83 } 84 85 86 SkSize& operator=(const SkISize& src) { 87 this->set(SkIntToScalar(src.fWidth), SkIntToScalar(src.fHeight)); 88 return *this; 89 } 90 toRoundSkSize91 SkISize toRound() const { 92 SkISize s; 93 s.set(SkScalarRoundToInt(fWidth), SkScalarRoundToInt(fHeight)); 94 return s; 95 } 96 toCeilSkSize97 SkISize toCeil() const { 98 SkISize s; 99 s.set(SkScalarCeilToInt(fWidth), SkScalarCeilToInt(fHeight)); 100 return s; 101 } 102 toFloorSkSize103 SkISize toFloor() const { 104 SkISize s; 105 s.set(SkScalarFloorToInt(fWidth), SkScalarFloorToInt(fHeight)); 106 return s; 107 } 108 }; 109 110 #endif 111