[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 | // 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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