[89] | 1 | /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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| 2 | * Qwt Widget Library
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| 3 | * Copyright (C) 1997 Josef Wilgen
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| 4 | * Copyright (C) 2002 Uwe Rathmann
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| 5 | *
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| 6 | * This library is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the Qwt License, Version 1.0
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| 8 | *****************************************************************************/
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| 9 |
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| 10 | /*! \file */
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| 11 | #ifndef QWT_DOUBLE_RECT_H
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| 12 | #define QWT_DOUBLE_RECT_H 1
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| 13 |
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| 14 | #include "qwt_global.h"
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| 15 | #include "qwt_array.h"
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| 16 |
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| 17 | #if QT_VERSION >= 0x040000
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| 18 |
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| 19 | #include <QPointF>
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| 20 | #include <QSizeF>
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| 21 | #include <QRectF>
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| 22 |
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| 23 | /*!
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| 24 | \typedef QPointF QwtDoublePoint
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| 25 | \brief This is a typedef, see Trolltech Documentation for QPointF
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| 26 | in QT assistant 4.x. As soon as Qt3 compatibility is dropped
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| 27 | this typedef will disappear.
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| 28 | */
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| 29 | typedef QPointF QwtDoublePoint;
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| 30 |
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| 31 | /*!
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| 32 | \typedef QSizeF QwtDoubleSize
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| 33 | \brief This is a typedef, see Trolltech Documentation for QSizeF
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| 34 | in QT assistant 4.x. As soon as Qt3 compatibility is dropped
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| 35 | this typedef will disappear.
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| 36 | */
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| 37 | typedef QSizeF QwtDoubleSize;
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| 38 |
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| 39 | /*!
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| 40 | \typedef QRectF QwtDoubleRect
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| 41 | \brief This is a typedef, see Trolltech Documentation for QRectF
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| 42 | in QT assistant 4.x. As soon as Qt3 compatibility is dropped
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| 43 | this typedef will disappear.
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| 44 | */
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| 45 | typedef QRectF QwtDoubleRect;
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| 46 |
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| 47 | #else
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| 48 |
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| 49 | #include <qpoint.h>
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| 50 | #include <qsize.h>
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| 51 | #include <qrect.h>
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| 52 |
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| 53 | /*!
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| 54 | \brief The QwtDoublePoint class defines a point in double coordinates
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| 55 | */
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| 56 |
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| 57 | class QWT_EXPORT QwtDoublePoint
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| 58 | {
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| 59 | public:
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| 60 | QwtDoublePoint();
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| 61 | QwtDoublePoint(double x, double y);
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| 62 | QwtDoublePoint(const QPoint &);
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| 63 |
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| 64 | QPoint toPoint() const;
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| 65 |
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| 66 | bool isNull() const;
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| 67 |
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| 68 | double x() const;
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| 69 | double y() const;
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| 70 |
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| 71 | double &rx();
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| 72 | double &ry();
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| 73 |
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| 74 | void setX(double x);
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| 75 | void setY(double y);
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| 76 |
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| 77 | bool operator==(const QwtDoublePoint &) const;
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| 78 | bool operator!=(const QwtDoublePoint &) const;
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| 79 |
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| 80 | const QwtDoublePoint operator-() const;
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| 81 | const QwtDoublePoint operator+(const QwtDoublePoint &) const;
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| 82 | const QwtDoublePoint operator-(const QwtDoublePoint &) const;
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| 83 | const QwtDoublePoint operator*(double) const;
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| 84 | const QwtDoublePoint operator/(double) const;
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| 85 |
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| 86 | QwtDoublePoint &operator+=(const QwtDoublePoint &);
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| 87 | QwtDoublePoint &operator-=(const QwtDoublePoint &);
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| 88 | QwtDoublePoint &operator*=(double);
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| 89 | QwtDoublePoint &operator/=(double);
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| 90 |
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| 91 | private:
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| 92 | double d_x;
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| 93 | double d_y;
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| 94 | };
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| 95 |
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| 96 | /*!
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| 97 | The QwtDoubleSize class defines a size in double coordinates
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| 98 | */
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| 99 |
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| 100 | class QWT_EXPORT QwtDoubleSize
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| 101 | {
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| 102 | public:
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| 103 | QwtDoubleSize();
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| 104 | QwtDoubleSize(double width, double height);
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| 105 | QwtDoubleSize(const QSize &);
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| 106 |
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| 107 | bool isNull() const;
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| 108 | bool isEmpty() const;
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| 109 | bool isValid() const;
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| 110 |
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| 111 | double width() const;
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| 112 | double height() const;
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| 113 | void setWidth( double w );
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| 114 | void setHeight( double h );
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| 115 | void transpose();
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| 116 |
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| 117 | QwtDoubleSize expandedTo(const QwtDoubleSize &) const;
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| 118 | QwtDoubleSize boundedTo(const QwtDoubleSize &) const;
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| 119 |
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| 120 | bool operator==(const QwtDoubleSize &) const;
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| 121 | bool operator!=(const QwtDoubleSize &) const;
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| 122 |
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| 123 | const QwtDoubleSize operator+(const QwtDoubleSize &) const;
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| 124 | const QwtDoubleSize operator-(const QwtDoubleSize &) const;
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| 125 | const QwtDoubleSize operator*(double) const;
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| 126 | const QwtDoubleSize operator/(double) const;
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| 127 |
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| 128 | QwtDoubleSize &operator+=(const QwtDoubleSize &);
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| 129 | QwtDoubleSize &operator-=(const QwtDoubleSize &);
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| 130 | QwtDoubleSize &operator*=(double c);
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| 131 | QwtDoubleSize &operator/=(double c);
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| 132 |
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| 133 | private:
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| 134 | double d_width;
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| 135 | double d_height;
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| 136 | };
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| 137 |
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| 138 | /*!
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| 139 | The QwtDoubleRect class defines a size in double coordinates.
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| 140 | */
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| 141 |
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| 142 | class QWT_EXPORT QwtDoubleRect
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| 143 | {
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| 144 | public:
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| 145 | QwtDoubleRect();
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| 146 | QwtDoubleRect(double left, double top, double width, double height);
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| 147 | QwtDoubleRect(const QwtDoublePoint&, const QwtDoubleSize &);
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| 148 |
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| 149 | QwtDoubleRect(const QRect &);
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| 150 | QRect toRect() const;
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| 151 |
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| 152 | bool isNull() const;
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| 153 | bool isEmpty() const;
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| 154 | bool isValid() const;
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| 155 |
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| 156 | QwtDoubleRect normalized() const;
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| 157 |
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| 158 | double x() const;
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| 159 | double y() const;
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| 160 |
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| 161 | double left() const;
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| 162 | double right() const;
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| 163 | double top() const;
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| 164 | double bottom() const;
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| 165 |
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| 166 | void setX(double);
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| 167 | void setY(double);
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| 168 |
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| 169 | void setLeft(double);
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| 170 | void setRight(double);
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| 171 | void setTop(double);
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| 172 | void setBottom(double);
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| 173 |
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| 174 | QwtDoublePoint center() const;
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| 175 |
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| 176 | void moveLeft(double x);
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| 177 | void moveRight(double x);
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| 178 | void moveTop(double y );
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| 179 | void moveBottom(double y );
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| 180 | void moveTo(double x, double y);
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| 181 | void moveTo(const QwtDoublePoint &);
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| 182 | void moveBy(double dx, double dy);
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| 183 | void moveCenter(const QwtDoublePoint &);
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| 184 | void moveCenter(double dx, double dy);
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| 185 |
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| 186 | void setRect(double x1, double x2, double width, double height);
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| 187 |
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| 188 | double width() const;
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| 189 | double height() const;
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| 190 | QwtDoubleSize size() const;
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| 191 |
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| 192 | void setWidth(double w );
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| 193 | void setHeight(double h );
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| 194 | void setSize(const QwtDoubleSize &);
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| 195 |
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| 196 | QwtDoubleRect operator|(const QwtDoubleRect &r) const;
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| 197 | QwtDoubleRect operator&(const QwtDoubleRect &r) const;
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| 198 | QwtDoubleRect &operator|=(const QwtDoubleRect &r);
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| 199 | QwtDoubleRect &operator&=(const QwtDoubleRect &r);
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| 200 | bool operator==( const QwtDoubleRect &) const;
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| 201 | bool operator!=( const QwtDoubleRect &) const;
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| 202 |
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| 203 | bool contains(const QwtDoublePoint &p, bool proper = false) const;
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| 204 | bool contains(double x, double y, bool proper = false) const;
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| 205 | bool contains(const QwtDoubleRect &r, bool proper=false) const;
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| 206 |
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| 207 | QwtDoubleRect unite(const QwtDoubleRect &) const;
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| 208 | QwtDoubleRect intersect(const QwtDoubleRect &) const;
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| 209 | bool intersects(const QwtDoubleRect &) const;
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| 210 |
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| 211 | QwtDoublePoint bottomRight() const;
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| 212 | QwtDoublePoint topRight() const;
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| 213 | QwtDoublePoint topLeft() const;
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| 214 | QwtDoublePoint bottomLeft() const;
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| 215 |
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| 216 | private:
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| 217 | double d_left;
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| 218 | double d_right;
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| 219 | double d_top;
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| 220 | double d_bottom;
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| 221 | };
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| 222 |
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| 223 | /*!
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| 224 | Returns true if the point is null; otherwise returns false.
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| 225 |
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| 226 | A point is considered to be null if both the x- and y-coordinates
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| 227 | are equal to zero.
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| 228 | */
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| 229 | inline bool QwtDoublePoint::isNull() const
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| 230 | {
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| 231 | return d_x == 0.0 && d_y == 0.0;
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| 232 | }
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| 233 |
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| 234 | //! Returns the x-coordinate of the point.
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| 235 | inline double QwtDoublePoint::x() const
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| 236 | {
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| 237 | return d_x;
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| 238 | }
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| 239 |
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| 240 | //! Returns the y-coordinate of the point.
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| 241 | inline double QwtDoublePoint::y() const
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| 242 | {
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| 243 | return d_y;
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| 244 | }
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| 245 |
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| 246 | //! Returns a reference to the x-coordinate of the point.
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| 247 | inline double &QwtDoublePoint::rx()
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| 248 | {
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| 249 | return d_x;
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| 250 | }
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| 251 |
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| 252 | //! Returns a reference to the y-coordinate of the point.
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| 253 | inline double &QwtDoublePoint::ry()
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| 254 | {
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| 255 | return d_y;
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| 256 | }
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| 257 |
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| 258 | //! Sets the x-coordinate of the point to the value specified by x.
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| 259 | inline void QwtDoublePoint::setX(double x)
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| 260 | {
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| 261 | d_x = x;
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| 262 | }
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| 263 |
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| 264 | //! Sets the y-coordinate of the point to the value specified by y.
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| 265 | inline void QwtDoublePoint::setY(double y)
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| 266 | {
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| 267 | d_y = y;
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| 268 | }
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| 269 |
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| 270 | /*!
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| 271 | Rounds the coordinates of this point to the nearest integer and
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| 272 | returns a QPoint with these rounded coordinates.
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| 273 | */
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| 274 | inline QPoint QwtDoublePoint::toPoint() const
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| 275 | {
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| 276 | return QPoint(qRound(d_x), qRound(d_y));
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| 277 | }
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| 278 |
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| 279 | /*!
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| 280 | Returns true if the width is 0 and the height is 0;
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| 281 | otherwise returns false.
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| 282 | */
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| 283 | inline bool QwtDoubleSize::isNull() const
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| 284 | {
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| 285 | return d_width == 0.0 && d_height == 0.0;
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| 286 | }
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| 287 |
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| 288 | /*!
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| 289 | Returns true if the width is <= 0.0 or the height is <= 0.0,
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| 290 | otherwise false.
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| 291 | */
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| 292 | inline bool QwtDoubleSize::isEmpty() const
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| 293 | {
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| 294 | return d_width <= 0.0 || d_height <= 0.0;
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| 295 | }
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| 296 |
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| 297 | /*!
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| 298 | Returns true if the width is equal to or greater than 0.0 and the height
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| 299 | is equal to or greater than 0.0; otherwise returns false.
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| 300 | */
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| 301 | inline bool QwtDoubleSize::isValid() const
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| 302 | {
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| 303 | return d_width >= 0.0 && d_height >= 0.0;
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| 304 | }
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| 305 |
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| 306 | //! Returns the width.
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| 307 | inline double QwtDoubleSize::width() const
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| 308 | {
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| 309 | return d_width;
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| 310 | }
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| 311 |
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| 312 | //! Returns the height.
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| 313 | inline double QwtDoubleSize::height() const
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| 314 | {
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| 315 | return d_height;
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| 316 | }
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| 317 |
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| 318 | //! Sets the width to width.
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| 319 | inline void QwtDoubleSize::setWidth(double width)
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| 320 | {
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| 321 | d_width = width;
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| 322 | }
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| 323 |
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| 324 | //! Sets the height to height.
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| 325 | inline void QwtDoubleSize::setHeight(double height)
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| 326 | {
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| 327 | d_height = height;
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| 328 | }
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| 329 |
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| 330 | /*!
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| 331 | Returns true if the rectangle is a null rectangle; otherwise returns false.
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| 332 | A null rectangle has both the width and the height set to 0.
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| 333 | A null rectangle is also empty and invalid.
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| 334 |
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| 335 | \sa isEmpty(), isValid()
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| 336 | */
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| 337 | inline bool QwtDoubleRect::isNull() const
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| 338 | {
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| 339 | return d_right == d_left && d_bottom == d_top;
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| 340 | }
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| 341 |
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| 342 | /*!
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| 343 | Returns true if the rectangle is empty; otherwise returns false.
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| 344 | An empty rectangle has a width() <= 0 or height() <= 0.
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| 345 | An empty rectangle is not valid. isEmpty() == !isValid()
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| 346 |
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| 347 | \sa isNull(), isValid()
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| 348 | */
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| 349 | inline bool QwtDoubleRect::isEmpty() const
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| 350 | {
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| 351 | return d_left >= d_right || d_top >= d_bottom;
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| 352 | }
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| 353 |
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| 354 | /*!
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| 355 | Returns true if the rectangle is valid; otherwise returns false.
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| 356 | A valid rectangle has a width() > 0 and height() > 0.
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| 357 | Note that non-trivial operations like intersections are not defined
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| 358 | for invalid rectangles. isValid() == !isEmpty()
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| 359 |
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| 360 | \sa isNull(), isEmpty(), and normalized().
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| 361 | */
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| 362 | inline bool QwtDoubleRect::isValid() const
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| 363 | {
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| 364 | return d_left < d_right && d_top < d_bottom;
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| 365 | }
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| 366 |
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| 367 | //! Returns x
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| 368 | inline double QwtDoubleRect::x() const
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| 369 | {
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| 370 | return d_left;
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| 371 | }
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| 372 |
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| 373 | //! Returns y
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| 374 | inline double QwtDoubleRect::y() const
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| 375 | {
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| 376 | return d_top;
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| 377 | }
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| 378 |
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| 379 | //! Returns left
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| 380 | inline double QwtDoubleRect::left() const
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| 381 | {
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| 382 | return d_left;
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| 383 | }
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| 384 |
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| 385 | //! Returns right
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| 386 | inline double QwtDoubleRect::right() const
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| 387 | {
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| 388 | return d_right;
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| 389 | }
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| 390 |
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| 391 | //! Returns top
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| 392 | inline double QwtDoubleRect::top() const
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| 393 | {
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| 394 | return d_top;
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| 395 | }
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| 396 |
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| 397 | //! Returns bottom
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| 398 | inline double QwtDoubleRect::bottom() const
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| 399 | {
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| 400 | return d_bottom;
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| 401 | }
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| 402 |
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| 403 | //! Set left
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| 404 | inline void QwtDoubleRect::setX(double x)
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| 405 | {
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| 406 | d_left = x;
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| 407 | }
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| 408 |
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| 409 | //! Set left
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| 410 | inline void QwtDoubleRect::setY(double y)
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| 411 | {
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| 412 | d_top = y;
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| 413 | }
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| 414 |
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| 415 | //! Set left
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| 416 | inline void QwtDoubleRect::setLeft(double x)
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| 417 | {
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| 418 | d_left = x;
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| 419 | }
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| 420 |
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| 421 | //! Set right
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| 422 | inline void QwtDoubleRect::setRight(double x)
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| 423 | {
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| 424 | d_right = x;
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| 425 | }
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| 426 |
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| 427 | //! Set top
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| 428 | inline void QwtDoubleRect::setTop(double y)
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| 429 | {
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| 430 | d_top = y;
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| 431 | }
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| 432 |
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| 433 | //! Set bottom
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| 434 | inline void QwtDoubleRect::setBottom(double y)
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| 435 | {
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| 436 | d_bottom = y;
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| 437 | }
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| 438 |
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| 439 | //! Returns the width
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| 440 | inline double QwtDoubleRect::width() const
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| 441 | {
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| 442 | return d_right - d_left;
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| 443 | }
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| 444 |
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| 445 | //! Returns the height
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| 446 | inline double QwtDoubleRect::height() const
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| 447 | {
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| 448 | return d_bottom - d_top;
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| 449 | }
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| 450 |
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| 451 | //! Returns the size
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| 452 | inline QwtDoubleSize QwtDoubleRect::size() const
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| 453 | {
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| 454 | return QwtDoubleSize(width(), height());
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| 455 | }
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| 456 |
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| 457 | //! Set the width, by right = left + w;
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| 458 | inline void QwtDoubleRect::setWidth(double w)
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| 459 | {
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| 460 | d_right = d_left + w;
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| 461 | }
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| 462 |
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| 463 | //! Set the height, by bottom = top + h;
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| 464 | inline void QwtDoubleRect::setHeight(double h)
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| 465 | {
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| 466 | d_bottom = d_top + h;
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| 467 | }
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| 468 |
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| 469 | /*!
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| 470 | Moves the top left corner of the rectangle to p,
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| 471 | without changing the rectangles size.
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| 472 | */
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| 473 | inline void QwtDoubleRect::moveTo(const QwtDoublePoint &p)
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| 474 | {
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| 475 | moveTo(p.x(), p.y());
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| 476 | }
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| 477 |
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| 478 | inline QwtDoublePoint QwtDoubleRect::bottomRight() const
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| 479 | {
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| 480 | return QwtDoublePoint(bottom(), right());
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| 481 | }
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| 482 |
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| 483 | inline QwtDoublePoint QwtDoubleRect::topRight() const
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| 484 | {
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| 485 | return QwtDoublePoint(top(), right());
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| 486 | }
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| 487 |
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| 488 | inline QwtDoublePoint QwtDoubleRect::topLeft() const
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| 489 | {
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| 490 | return QwtDoublePoint(top(), left());
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| 491 | }
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| 492 |
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| 493 | inline QwtDoublePoint QwtDoubleRect::bottomLeft() const
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| 494 | {
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| 495 | return QwtDoublePoint(bottom(), left());
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| 496 | }
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| 497 |
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| 498 |
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| 499 | #endif // QT_VERSION < 0x040000
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| 500 |
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| 501 | #endif // QWT_DOUBLE_RECT_H
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