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 | #ifndef QWT_SCALE_DRAW_H
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11 | #define QWT_SCALE_DRAW_H
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12 |
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13 | #include <qpoint.h>
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14 | #include "qwt_global.h"
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15 | #include "qwt_abstract_scale_draw.h"
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16 |
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17 | /*!
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18 | \brief A class for drawing scales
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19 |
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20 | QwtScaleDraw can be used to draw linear or logarithmic scales.
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21 | A scale has a position, an alignment and a length, which can be specified .
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22 | The labels can be rotated and aligned
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23 | to the ticks using setLabelRotation() and setLabelAlignment().
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24 |
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25 | After a scale division has been specified as a QwtScaleDiv object
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26 | using QwtAbstractScaleDraw::setScaleDiv(const QwtScaleDiv &s),
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27 | the scale can be drawn with the QwtAbstractScaleDraw::draw() member.
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28 | */
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29 |
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30 | class QWT_EXPORT QwtScaleDraw: public QwtAbstractScaleDraw
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31 | {
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32 | public:
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33 | /*!
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34 | Alignment of the scale draw
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35 | \sa setAlignment(), alignment()
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36 | */
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37 | enum Alignment { BottomScale, TopScale, LeftScale, RightScale };
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38 |
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39 | QwtScaleDraw();
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40 | QwtScaleDraw(const QwtScaleDraw &);
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41 |
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42 | virtual ~QwtScaleDraw();
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43 |
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44 | QwtScaleDraw &operator=(const QwtScaleDraw &other);
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45 |
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46 | void getBorderDistHint(const QFont &, int &start, int &end) const;
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47 | int minLabelDist(const QFont &) const;
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48 |
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49 | int minLength(const QPen &, const QFont &) const;
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50 | virtual int extent(const QPen &, const QFont &) const;
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51 |
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52 | void move(int x, int y);
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53 | void move(const QPoint &);
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54 | void setLength(int length);
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55 |
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56 | Alignment alignment() const;
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57 | void setAlignment(Alignment);
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58 |
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59 | Qt::Orientation orientation() const;
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60 |
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61 | QPoint pos() const;
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62 | int length() const;
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63 |
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64 | #if QT_VERSION < 0x040000
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65 | void setLabelAlignment(int);
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66 | int labelAlignment() const;
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67 | #else
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68 | void setLabelAlignment(Qt::Alignment);
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69 | Qt::Alignment labelAlignment() const;
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70 | #endif
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71 |
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72 | void setLabelRotation(double rotation);
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73 | double labelRotation() const;
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74 |
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75 | int maxLabelHeight(const QFont &) const;
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76 | int maxLabelWidth(const QFont &) const;
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77 |
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78 | QPoint labelPosition(double val) const;
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79 |
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80 | QRect labelRect(const QFont &, double val) const;
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81 | QSize labelSize(const QFont &, double val) const;
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82 |
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83 | QRect boundingLabelRect(const QFont &, double val) const;
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84 |
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85 | protected:
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86 |
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87 | #if QT_VERSION < 0x040000
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88 | QWMatrix labelMatrix(const QPoint &, const QSize &) const;
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89 | #else
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90 | QMatrix labelMatrix(const QPoint &, const QSize &) const;
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91 | #endif
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92 |
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93 | virtual void drawTick(QPainter *p, double val, int len) const;
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94 | virtual void drawBackbone(QPainter *p) const;
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95 | virtual void drawLabel(QPainter *p, double val) const;
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96 |
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97 | private:
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98 | void updateMap();
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99 |
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100 | class PrivateData;
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101 | PrivateData *d_data;
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102 | };
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103 |
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104 | /*!
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105 | Move the position of the scale
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106 | \sa move(const QPoint &)
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107 | */
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108 | inline void QwtScaleDraw::move(int x, int y)
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109 | {
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110 | move(QPoint(x, y));
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111 | }
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112 |
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113 | #endif
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