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_WIDGET_H
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11 | #define QWT_SCALE_WIDGET_H
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12 |
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13 | #include <qwidget.h>
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14 | #include <qfont.h>
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15 | #include <qcolor.h>
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16 | #include <qstring.h>
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17 |
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18 | #include "qwt_global.h"
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19 | #include "qwt_text.h"
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20 | #include "qwt_scale_draw.h"
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21 |
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22 | class QPainter;
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23 | class QwtScaleTransformation;
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24 | class QwtScaleDiv;
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25 | class QwtColorMap;
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26 |
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27 | /*!
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28 | \brief A Widget which contains a scale
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29 |
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30 | This Widget can be used to decorate composite widgets with
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31 | a scale.
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32 | */
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33 |
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34 | class QWT_EXPORT QwtScaleWidget : public QWidget
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35 | {
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36 | Q_OBJECT
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37 |
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38 | public:
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39 | explicit QwtScaleWidget(QWidget *parent = NULL);
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40 | #if QT_VERSION < 0x040000
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41 | explicit QwtScaleWidget(QWidget *parent, const char *name);
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42 | #endif
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43 | explicit QwtScaleWidget(QwtScaleDraw::Alignment, QWidget *parent = NULL);
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44 | virtual ~QwtScaleWidget();
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45 |
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46 | signals:
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47 | //! Signal emitted, whenever the scale divison changes
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48 | void scaleDivChanged();
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49 |
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50 | public:
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51 | void setTitle(const QString &title);
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52 | void setTitle(const QwtText &title);
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53 | QwtText title() const;
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54 |
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55 | void setBorderDist(int start, int end);
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56 | int startBorderDist() const;
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57 | int endBorderDist() const;
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58 |
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59 | void getBorderDistHint(int &start, int &end) const;
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60 |
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61 | void getMinBorderDist(int &start, int &end) const;
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62 | void setMinBorderDist(int start, int end);
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63 |
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64 | void setMargin(int);
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65 | int margin() const;
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66 |
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67 | void setSpacing(int td);
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68 | int spacing() const;
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69 |
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70 | void setPenWidth(int);
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71 | int penWidth() const;
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72 |
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73 | void setScaleDiv(QwtScaleTransformation *, const QwtScaleDiv &sd);
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74 |
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75 | void setScaleDraw(QwtScaleDraw *);
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76 | const QwtScaleDraw *scaleDraw() const;
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77 | QwtScaleDraw *scaleDraw();
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78 |
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79 | #if QT_VERSION < 0x040000
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80 | void setLabelAlignment(int);
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81 | #else
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82 | void setLabelAlignment(Qt::Alignment);
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83 | #endif
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84 | void setLabelRotation(double rotation);
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85 |
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86 | void setColorBarEnabled(bool);
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87 | bool isColorBarEnabled() const;
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88 |
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89 | void setColorBarWidth(int);
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90 | int colorBarWidth() const;
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91 |
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92 | void setColorMap(const QwtDoubleInterval &, const QwtColorMap &);
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93 |
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94 | QwtDoubleInterval colorBarInterval() const;
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95 | const QwtColorMap &colorMap() const;
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96 |
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97 | virtual QSize sizeHint() const;
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98 | virtual QSize minimumSizeHint() const;
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99 |
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100 | int titleHeightForWidth(int width) const;
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101 | int dimForLength(int length, const QFont &scaleFont) const;
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102 |
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103 | void drawColorBar(QPainter *painter, const QRect &rect) const;
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104 | void drawTitle(QPainter *painter, QwtScaleDraw::Alignment,
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105 | const QRect &rect) const;
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106 |
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107 | void setAlignment(QwtScaleDraw::Alignment);
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108 | QwtScaleDraw::Alignment alignment() const;
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109 |
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110 | QRect colorBarRect(const QRect&) const;
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111 |
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112 | protected:
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113 | virtual void paintEvent(QPaintEvent *e);
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114 | virtual void resizeEvent(QResizeEvent *e);
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115 |
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116 | #if QT_VERSION < 0x040000
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117 | virtual void fontChange(const QFont &oldfont);
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118 | #endif
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119 |
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120 | void draw(QPainter *p) const;
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121 |
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122 | void scaleChange();
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123 | void layoutScale( bool update = true );
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124 |
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125 | private:
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126 | void initScale(QwtScaleDraw::Alignment);
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127 |
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128 | class PrivateData;
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129 | PrivateData *d_data;
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130 | };
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131 |
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132 | #endif
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