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qwt_rect.h

00001 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- ***************************** 00002 * Qwt Widget Library 00003 * Copyright (C) 1997 Josef Wilgen 00004 * Copyright (C) 2002 Uwe Rathmann 00005 * 00006 * This library is free software; you can redistribute it and/or 00007 * modify it under the terms of the Qwt License, Version 1.0 00008 *****************************************************************************/ 00009 00010 #ifndef QWT_RECT_H 00011 #define QWT_RECT_H 00012 00013 #include <qrect.h> 00014 #include "qwt_global.h" 00015 00016 class QPoint; 00017 class QPointArray; 00018 00023 class QWT_EXPORT QwtRect : public QRect 00024 { 00025 public: 00026 QwtRect(); 00027 QwtRect(const QRect &r); 00028 00029 QRect cutTop(int h , int distTop = 0, int distBottom = 0); 00030 QRect cutBottom(int h, int distTop = 0, int distBottom = 0); 00031 QRect cutLeft(int w, int distLeft = 0, int distRight = 0); 00032 QRect cutRight(int w, int distLeft = 0, int distRight = 0); 00033 const QwtRect &cutMargin(int mLeft, int mRight, int Top, int mBottom); 00034 00035 QPointArray clip(const QPointArray &) const; 00036 00037 private: 00038 enum Edge { Left, Top, Right, Bottom, NEdges }; 00039 00040 void clipEdge(Edge, const QPointArray &, QPointArray &) const; 00041 bool insideEdge(const QPoint &, Edge edge) const; 00042 QPoint intersectEdge(const QPoint &p1, 00043 const QPoint &p2, Edge edge) const; 00044 }; 00045 00046 #endif

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