workspace/ksplash/ksplashx/qsize.h

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  11 ** The original Qt license header follows:
  12 **
  13 **
  14 ** Definition of QSize class
  15 **
  16 ** Created : 931028
  17 **
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  47
  48 #ifndef QSIZE_H
  49 #define QSIZE_H
  50
  51 #ifndef QT_H
  52 #include "qpoint.h" // ### change to qwindowdefs.h?
  53 #endif // QT_H
  54
  55 class Q_EXPORT QSize
  56 // ### Make QSize inherit Qt in Qt 4.0
  57 {
  58 public:
  59     // ### Move this enum to qnamespace.h in Qt 4.0
  60     enum ScaleMode {
  61         ScaleFree,
  62         ScaleMin,
  63         ScaleMax
  64     };
  65
  66     QSize();
  67     QSize( int w, int h );
  68
  69     bool isNull() const;
  70     bool isEmpty() const;
  71     bool isValid() const;
  72
  73     int width() const;
  74     int height() const;
  75     void setWidth( int w );
  76     void setHeight( int h );
  77     void transpose();
  78
  79     void scale( int w, int h, ScaleMode mode );
  80     void scale( const QSize &s, ScaleMode mode );
  81
  82     QSize expandedTo( const QSize & ) const;
  83     QSize boundedTo( const QSize & ) const;
  84
  85     QCOORD &rwidth();
  86     QCOORD &rheight();
  87
  88     QSize &operator+=( const QSize & );
  89     QSize &operator-=( const QSize & );
  90     QSize &operator*=( int c );
  91     QSize &operator*=( double c );
  92     QSize &operator/=( int c );
  93     QSize &operator/=( double c );
  94
  95     friend inline bool operator==( const QSize &, const QSize & );
  96     friend inline bool operator!=( const QSize &, const QSize & );
  97     friend inline const QSize operator+( const QSize &, const QSize & );
  98     friend inline const QSize operator-( const QSize &, const QSize & );
  99     friend inline const QSize operator*( const QSize &, int );
 100     friend inline const QSize operator*( int, const QSize & );
 101     friend inline const QSize operator*( const QSize &, double );
 102     friend inline const QSize operator*( double, const QSize & );
 103     friend inline const QSize operator/( const QSize &, int );
 104     friend inline const QSize operator/( const QSize &, double );
 105
 106 private:
 107     static void warningDivByZero();
 108
 109     QCOORD wd;
 110     QCOORD ht;
 111 };
 112
 113
 114 /*****************************************************************************
 115   QSize stream functions
 116  *****************************************************************************/
 117
 118 #ifndef QT_NO_DATASTREAM
 119 Q_EXPORT QDataStream &operator<<( QDataStream &, const QSize & );
 120 Q_EXPORT QDataStream &operator>>( QDataStream &, QSize & );
 121 #endif
 122
 123 /*****************************************************************************
 124   QSize inline functions
 125  *****************************************************************************/
 126
 127 inline QSize::QSize()
 128 { wd = ht = -1; }
 129
 130 inline QSize::QSize( int w, int h )
 131 { wd=(QCOORD)w; ht=(QCOORD)h; }
 132
 133 inline bool QSize::isNull() const
 134 { return wd==0 && ht==0; }
 135
 136 inline bool QSize::isEmpty() const
 137 { return wd<1 || ht<1; }
 138
 139 inline bool QSize::isValid() const
 140 { return wd>=0 && ht>=0; }
 141
 142 inline int QSize::width() const
 143 { return wd; }
 144
 145 inline int QSize::height() const
 146 { return ht; }
 147
 148 inline void QSize::setWidth( int w )
 149 { wd=(QCOORD)w; }
 150
 151 inline void QSize::setHeight( int h )
 152 { ht=(QCOORD)h; }
 153
 154 inline QCOORD &QSize::rwidth()
 155 { return wd; }
 156
 157 inline QCOORD &QSize::rheight()
 158 { return ht; }
 159
 160 inline QSize &QSize::operator+=( const QSize &s )
 161 { wd+=s.wd; ht+=s.ht; return *this; }
 162
 163 inline QSize &QSize::operator-=( const QSize &s )
 164 { wd-=s.wd; ht-=s.ht; return *this; }
 165
 166 inline QSize &QSize::operator*=( int c )
 167 { wd*=(QCOORD)c; ht*=(QCOORD)c; return *this; }
 168
 169 inline QSize &QSize::operator*=( double c )
 170 { wd=(QCOORD)(wd*c); ht=(QCOORD)(ht*c); return *this; }
 171
 172 inline bool operator==( const QSize &s1, const QSize &s2 )
 173 { return s1.wd == s2.wd && s1.ht == s2.ht; }
 174
 175 inline bool operator!=( const QSize &s1, const QSize &s2 )
 176 { return s1.wd != s2.wd || s1.ht != s2.ht; }
 177
 178 inline const QSize operator+( const QSize & s1, const QSize & s2 )
 179 { return QSize(s1.wd+s2.wd, s1.ht+s2.ht); }
 180
 181 inline const QSize operator-( const QSize &s1, const QSize &s2 )
 182 { return QSize(s1.wd-s2.wd, s1.ht-s2.ht); }
 183
 184 inline const QSize operator*( const QSize &s, int c )
 185 { return QSize(s.wd*c, s.ht*c); }
 186
 187 inline const QSize operator*( int c, const QSize &s )
 188 {  return QSize(s.wd*c, s.ht*c); }
 189
 190 inline const QSize operator*( const QSize &s, double c )
 191 { return QSize((QCOORD)(s.wd*c), (QCOORD)(s.ht*c)); }
 192
 193 inline const QSize operator*( double c, const QSize &s )
 194 { return QSize((QCOORD)(s.wd*c), (QCOORD)(s.ht*c)); }
 195
 196 inline QSize &QSize::operator/=( int c )
 197 {
 198 #if defined(QT_CHECK_MATH)
 199     if ( c == 0 )
 200         warningDivByZero();
 201 #endif
 202     wd/=(QCOORD)c; ht/=(QCOORD)c;
 203     return *this;
 204 }
 205
 206 inline QSize &QSize::operator/=( double c )
 207 {
 208 #if defined(QT_CHECK_MATH)
 209     if ( c == 0.0 )
 210         warningDivByZero();
 211 #endif
 212     wd=(QCOORD)(wd/c); ht=(QCOORD)(ht/c);
 213     return *this;
 214 }
 215
 216 inline const QSize operator/( const QSize &s, int c )
 217 {
 218 #if defined(QT_CHECK_MATH)
 219     if ( c == 0 )
 220         QSize::warningDivByZero();
 221 #endif
 222     return QSize(s.wd/c, s.ht/c);
 223 }
 224
 225 inline const QSize operator/( const QSize &s, double c )
 226 {
 227 #if defined(QT_CHECK_MATH)
 228     if ( c == 0.0 )
 229         QSize::warningDivByZero();
 230 #endif
 231     return QSize((QCOORD)(s.wd/c), (QCOORD)(s.ht/c));
 232 }
 233
 234 inline QSize QSize::expandedTo( const QSize & otherSize ) const
 235 {
 236     return QSize( qMax(wd,otherSize.wd), qMax(ht,otherSize.ht) );
 237 }
 238
 239 inline QSize QSize::boundedTo( const QSize & otherSize ) const
 240 {
 241     return QSize( qMin(wd,otherSize.wd), qMin(ht,otherSize.ht) );
 242 }
 243
 244
 245 #endif // QSIZE_H