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99 lines
3.7 KiB
99 lines
3.7 KiB
#ifndef SIZE_H
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#define SIZE_H
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#include "point.h"
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enum ESizeScaleMode {
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IGNORE_ASPECT_RATIO,
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KEEP_ASPECT_RATIO,
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KEEP_ASPECT_RATIO_BY_EXPANDING
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};
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template <class T>
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class TSize
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{
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public:
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inline TSize() : wd(-1), ht(-1) {};
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inline TSize(T width, T height) : wd(width), ht(height) { };
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inline TSize(const TSize<T>& other) : wd(other.wd), ht(other.ht) { };
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inline TPoint<T> toPoint() const { return TPoint<T>(wd, ht); }
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inline bool isNull() const { return wd==0 && ht==0; }
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inline bool isEmpty() const { return wd<1 || ht<1; }
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inline bool isValid() const { return wd>=0 && ht>=0; }
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inline int width() const { return wd; }
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inline int height() const { return ht; }
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inline void setSize(T w, T h) { wd = w; ht = h; }
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inline void setWidth(T w) { wd = w; }
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inline void setHeight(T h) { ht = h; }
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inline TSize<T> operator-() const { return TSize<T>(-wd, -ht); }
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inline TSize<T> operator+(const TSize<T>& other) const { return TSize<T>(wd + other.wd, ht + other.ht); }
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inline TSize<T>& operator+=(const TSize<T>& other) { wd+=other.wd; ht+=other.ht; return *this; }
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inline TSize<T> operator-(const TSize<T>& other) const { return TSize<T>(wd - other.wd, ht - other.ht); }
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inline TSize<T>& operator-=(const TSize<T>& other) { wd-=other.wd; ht-=other.ht; return *this; }
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inline TSize<T> operator*(const float v) const { return TSize<T>((T)v*wd, (T)ht*v); }
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inline TSize<T>& operator*=(const float v) { wd=(T)v*wd; ht=(T)ht*v; return *this; }
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inline TSize<T> operator/(const float v) const { return TSize<T>((T)wd/v, (T)ht/v); }
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inline TSize<T>& operator/=(const float v) { (T)wd/=v; (T)ht/=v; return *this; }
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inline bool operator<=(const TSize<T>&other) const { return wd<=other.wd || ht<=other.ht; }
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inline bool operator>=(const TSize<T>&other) const { return wd>=other.wd || ht>=other.ht; }
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inline bool operator<(const TSize<T>&other) const { return wd<other.wd || ht<other.ht; }
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inline bool operator>(const TSize<T>&other) const { return wd>other.wd || ht>other.ht; }
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inline TSize<T>& operator=(const TSize<T>& other) { wd = other.wd; ht = other.ht; return *this; }
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inline bool operator==(const TSize<T>& other) const { return other.wd==wd && other.ht==ht; }
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inline bool operator!=(const TSize<T>& other) const { return other.wd!=wd || other.ht!=ht; }
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inline TSize<T> expandedTo(const TSize<T>& other) const { return TSize<T>(std::max(wd,other.wd), std::max(ht,other.ht)); }
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inline TSize<T> boundedTo(const TSize<T>& other) const { return TSize<T>(std::min(wd,other.wd), std::min(ht,other.ht)); }
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inline void scale(const TSize<T>& s, ESizeScaleMode mode) {
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if(mode == IGNORE_ASPECT_RATIO || wd == 0 || ht == 0) {
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wd = s.wd;
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ht = s.ht;
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} else {
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bool useHeight;
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T rw = (s.ht * wd) / ht;
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if(mode == KEEP_ASPECT_RATIO)
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useHeight = (rw <= s.wd);
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else // mode == KEEP_ASPECT_RATIO_BY_EXPANDING
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useHeight = (rw >= s.wd);
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if(useHeight) {
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wd = rw;
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ht = s.ht;
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} else {
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ht = (s.wd * ht)/wd;
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wd = s.wd;
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}
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}
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}
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inline void scale(int w, int h, ESizeScaleMode mode) { scale(TSize<T>(w, h)); }
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inline float ratio() const { return (float)wd/ht; }
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inline T area() const { return wd*ht; }
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private:
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T wd, ht;
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};
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typedef TSize<int> Size;
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typedef TSize<float> SizeF;
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template <class T>
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inline std::ostream& operator<<(std::ostream& out, const TSize<T>& size)
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{
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out << "Size(" << size.width() << ","
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<< size.height() << ")";
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return out;
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}
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#endif
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