| 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_DATE_SCALE_DRAW_H_
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| 11 | #define _QWT_DATE_SCALE_DRAW_H_ 1
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| 12 |
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| 13 | #include "qwt_global.h"
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| 14 | #include "qwt_scale_draw.h"
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| 15 | #include "qwt_date.h"
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| 16 |
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| 17 | /*!
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| 18 | \brief A class for drawing datetime scales
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| 19 |
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| 20 | QwtDateScaleDraw displays values as datetime labels.
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| 21 | The format of the labels depends on the alignment of
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| 22 | the major tick labels.
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| 23 |
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| 24 | The default format strings are:
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| 25 |
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| 26 | - Millisecond\n
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| 27 | "hh:mm:ss:zzz\nddd dd MMM yyyy"
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| 28 | - Second\n
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| 29 | "hh:mm:ss\nddd dd MMM yyyy"
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| 30 | - Minute\n
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| 31 | "hh:mm\nddd dd MMM yyyy"
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| 32 | - Hour\n
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| 33 | "hh:mm\nddd dd MMM yyyy"
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| 34 | - Day\n
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| 35 | "ddd dd MMM yyyy"
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| 36 | - Week\n
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| 37 | "Www yyyy"
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| 38 | - Month\n
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| 39 | "MMM yyyy"
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| 40 | - Year\n
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| 41 | "yyyy"
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| 42 |
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| 43 | The format strings can be modified using setDateFormat()
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| 44 | or individually for each tick label by overloading dateFormatOfDate(),
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| 45 |
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| 46 | Usually QwtDateScaleDraw is used in combination with
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| 47 | QwtDateScaleEngine, that calculates scales for datetime
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| 48 | intervals.
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| 49 |
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| 50 | \sa QwtDateScaleEngine, QwtPlot::setAxisScaleDraw()
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| 51 | */
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| 52 | class QWT_EXPORT QwtDateScaleDraw: public QwtScaleDraw
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| 53 | {
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| 54 | public:
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| 55 | QwtDateScaleDraw( Qt::TimeSpec = Qt::LocalTime );
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| 56 | virtual ~QwtDateScaleDraw();
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| 57 |
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| 58 | void setDateFormat( QwtDate::IntervalType, const QString & );
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| 59 | QString dateFormat( QwtDate::IntervalType ) const;
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| 60 |
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| 61 | void setTimeSpec( Qt::TimeSpec );
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| 62 | Qt::TimeSpec timeSpec() const;
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| 63 |
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| 64 | void setUtcOffset( int seconds );
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| 65 | int utcOffset() const;
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| 66 |
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| 67 | void setWeek0Type( QwtDate::Week0Type );
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| 68 | QwtDate::Week0Type week0Type() const;
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| 69 |
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| 70 | virtual QwtText label( double ) const;
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| 71 |
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| 72 | QDateTime toDateTime( double ) const;
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| 73 |
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| 74 | protected:
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| 75 | virtual QwtDate::IntervalType
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| 76 | intervalType( const QwtScaleDiv & ) const;
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| 77 |
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| 78 | virtual QString dateFormatOfDate( const QDateTime &,
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| 79 | QwtDate::IntervalType ) const;
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| 80 |
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| 81 | private:
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| 82 | class PrivateData;
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| 83 | PrivateData *d_data;
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| 84 | };
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| 85 |
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| 86 | #endif
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