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 | // vim: expandtab
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11 |
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12 | #ifndef QWT_LEGEND_ITEM_H
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13 | #define QWT_LEGEND_ITEM_H
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14 |
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15 | #include "qwt_global.h"
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16 | #include "qwt_legend.h"
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17 | #include "qwt_text.h"
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18 | #include "qwt_text_label.h"
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19 |
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20 | class QPainter;
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21 | class QPen;
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22 | class QwtSymbol;
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23 |
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24 | /*!
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25 | \brief A legend label
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26 |
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27 | QwtLegendItem represents a curve on a legend.
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28 | It displays an curve identifier with an explaining text.
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29 | The identifier might be a combination of curve symbol and line.
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30 | In readonly mode it behaves like a label, otherwise like
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31 | an unstylish push button.
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32 |
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33 | \sa QwtLegend, QwtPlotCurve
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34 | */
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35 | class QWT_EXPORT QwtLegendItem: public QwtTextLabel
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36 | {
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37 | Q_OBJECT
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38 | public:
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39 |
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40 | /*!
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41 | \brief Identifier mode
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42 |
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43 | Default is ShowLine | ShowText
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44 | \sa identifierMode(), setIdentifierMode()
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45 | */
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46 |
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47 | enum IdentifierMode
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48 | {
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49 | NoIdentifier = 0,
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50 | ShowLine = 1,
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51 | ShowSymbol = 2,
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52 | ShowText = 4
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53 | };
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54 |
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55 | explicit QwtLegendItem(QWidget *parent = 0);
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56 | explicit QwtLegendItem(const QwtSymbol &, const QPen &,
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57 | const QwtText &, QWidget *parent = 0);
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58 | virtual ~QwtLegendItem();
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59 |
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60 | virtual void setText(const QwtText &);
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61 |
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62 | void setItemMode(QwtLegend::LegendItemMode);
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63 | QwtLegend::LegendItemMode itemMode() const;
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64 |
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65 | void setIdentifierMode(int);
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66 | int identifierMode() const;
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67 |
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68 | void setIdentifierWidth(int width);
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69 | int identifierWidth() const;
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70 |
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71 | void setSpacing(int spacing);
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72 | int spacing() const;
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73 |
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74 | void setSymbol(const QwtSymbol &);
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75 | const QwtSymbol& symbol() const;
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76 |
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77 | void setCurvePen(const QPen &);
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78 | const QPen& curvePen() const;
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79 |
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80 | virtual void drawIdentifier(QPainter *, const QRect &) const;
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81 | virtual void drawItem(QPainter *p, const QRect &) const;
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82 |
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83 | virtual QSize sizeHint() const;
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84 |
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85 | bool isChecked() const;
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86 |
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87 | public slots:
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88 | void setChecked(bool on);
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89 |
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90 | signals:
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91 | //! Signal, when the legend item has been clicked
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92 | void clicked();
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93 |
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94 | //! Signal, when the legend item has been pressed
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95 | void pressed();
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96 |
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97 | //! Signal, when the legend item has been relased
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98 | void released();
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99 |
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100 | //! Signal, when the legend item has been toggled
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101 | void checked(bool);
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102 |
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103 | protected:
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104 | void setDown(bool);
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105 | bool isDown() const;
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106 |
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107 | virtual void paintEvent(QPaintEvent *);
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108 | virtual void mousePressEvent(QMouseEvent *);
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109 | virtual void mouseReleaseEvent(QMouseEvent *);
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110 | virtual void keyPressEvent(QKeyEvent *);
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111 | virtual void keyReleaseEvent(QKeyEvent *);
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112 |
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113 | virtual void drawText(QPainter *, const QRect &);
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114 |
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115 | private:
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116 | void init(const QwtText &);
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117 |
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118 | class PrivateData;
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119 | PrivateData *d_data;
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120 | };
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121 |
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122 | #endif // QWT_LEGEND_ITEM_H
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