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    40 ****************************************************************************/

    41 

    42 #ifndef QMARGINS_H

    43 #define QMARGINS_H

    44 

    45 #include <QtCore/qnamespace.h>

    46 

    47 QT_BEGIN_HEADER

    48 

    49 QT_BEGIN_NAMESPACE

    50 

    51 QT_MODULE(Core)

    52 

    53 class QMargins

    54 {

    55 public:

    56     QMargins();

    57     QMargins(int left, int top, int right, int bottom);

    58 

    59     bool isNull() const;

    60 

    61     int left() const;

    62     int top() const;

    63     int right() const;

    64     int bottom() const;

    65 

    66     void setLeft(int left);

    67     void setTop(int top);

    68     void setRight(int right);

    69     void setBottom(int bottom);

    70 

    71 private:

    72     int m_left;

    73     int m_top;

    74     int m_right;

    75     int m_bottom;

    76 

    77     friend inline bool operator==(const QMargins &, const QMargins &);

    78     friend inline bool operator!=(const QMargins &, const QMargins &);

    79 };

    80 

    81 Q_DECLARE_TYPEINFO(QMargins, Q_MOVABLE_TYPE);

    82 

    83 /*****************************************************************************

    84   QMargins inline functions

    85  *****************************************************************************/

    86 

    87 inline QMargins::QMargins()

    88 { m_top = m_bottom = m_left = m_right = 0; }

    89 

    90 inline QMargins::QMargins(int aleft, int atop, int aright, int abottom)

    91     : m_left(aleft), m_top(atop), m_right(aright), m_bottom(abottom) {}

    92 

    93 inline bool QMargins::isNull() const

    94 { return m_left==0 && m_top==0 && m_right==0 && m_bottom==0; }

    95 

    96 inline int QMargins::left() const

    97 { return m_left; }

    98 

    99 inline int QMargins::top() const

   100 { return m_top; }

   101 

   102 inline int QMargins::right() const

   103 { return m_right; }

   104 

   105 inline int QMargins::bottom() const

   106 { return m_bottom; }

   107 

   108 

   109 inline void QMargins::setLeft(int aleft)

   110 { m_left = aleft; }

   111 

   112 inline void QMargins::setTop(int atop)

   113 { m_top = atop; }

   114 

   115 inline void QMargins::setRight(int aright)

   116 { m_right = aright; }

   117 

   118 inline void QMargins::setBottom(int abottom)

   119 { m_bottom = abottom; }

   120 

   121 inline bool operator==(const QMargins &m1, const QMargins &m2)

   122 {

   123     return

   124             m1.m_left == m2.m_left &&

   125             m1.m_top == m2.m_top &&

   126             m1.m_right == m2.m_right &&

   127             m1.m_bottom == m2.m_bottom;

   128 }

   129 

   130 inline bool operator!=(const QMargins &m1, const QMargins &m2)

   131 {

   132     return

   133             m1.m_left != m2.m_left ||

   134             m1.m_top != m2.m_top ||

   135             m1.m_right != m2.m_right ||

   136             m1.m_bottom != m2.m_bottom;

   137 }

   138 

   139 #ifndef QT_NO_DEBUG_STREAM

   140 Q_CORE_EXPORT QDebug operator<<(QDebug, const QMargins &);

   141 #endif

   142 

   143 QT_END_NAMESPACE

   144 

   145 QT_END_HEADER

   146 

   147 #endif // QMARGINS_H