ground/gcs/src/libs/qwt/src/qwt_clipper.h

   1 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
   2  * Qwt Widget Library
   3  * Copyright (C) 1997   Josef Wilgen
   4  * Copyright (C) 2002   Uwe Rathmann
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the Qwt License, Version 1.0
   8  *****************************************************************************/
   9
  10 #ifndef QWT_CLIPPER_H
  11 #define QWT_CLIPPER_H
  12
  13 #include "qwt_global.h"
  14 #include "qwt_interval.h"
  15 #include <qpolygon.h>
  16 #include <qvector.h>
  17
  18 class QRect;
  19 class QRectF;
  20
  21 /*!
  22   \brief Some clipping algorithms
  23 */
  24
  25 class QWT_EXPORT QwtClipper
  26 {
  27 public:
  28     static QPolygon clipPolygon( const QRect &,
  29         const QPolygon &, bool closePolygon = false );
  30     static QPolygon clipPolygon( const QRectF &,
  31         const QPolygon &, bool closePolygon = false );
  32
  33     static QPolygonF clipPolygonF( const QRectF &,
  34         const QPolygonF &, bool closePolygon = false );
  35
  36     static QVector<QwtInterval> clipCircle(
  37         const QRectF &, const QPointF &, double radius );
  38 };
  39
  40 #endif