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77 lines
1.8 KiB
77 lines
1.8 KiB
#ifndef _QWT_DATE_SCALE_DRAW_H_ |
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#define _QWT_DATE_SCALE_DRAW_H_ 1 |
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#include "qwt_global.h" |
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#include "qwt_scale_draw.h" |
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#include "qwt_date.h" |
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/*! |
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\brief A class for drawing datetime scales |
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QwtDateScaleDraw displays values as datetime labels. |
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The format of the labels depends on the alignment of |
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the major tick labels. |
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The default format strings are: |
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- Millisecond\n |
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"hh:mm:ss:zzz\nddd dd MMM yyyy" |
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- Second\n |
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"hh:mm:ss\nddd dd MMM yyyy" |
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- Minute\n |
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"hh:mm\nddd dd MMM yyyy" |
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- Hour\n |
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"hh:mm\nddd dd MMM yyyy" |
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- Day\n |
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"ddd dd MMM yyyy" |
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- Week\n |
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"Www yyyy" |
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- Month\n |
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"MMM yyyy" |
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- Year\n |
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"yyyy" |
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The format strings can be modified using setDateFormat() |
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or individually for each tick label by overloading dateFormatOfDate(), |
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Usually QwtDateScaleDraw is used in combination with |
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QwtDateScaleEngine, that calculates scales for datetime |
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intervals. |
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\sa QwtDateScaleEngine, QwtPlot::setAxisScaleDraw() |
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*/ |
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class QWT_EXPORT QwtDateScaleDraw: public QwtScaleDraw |
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{ |
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public: |
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QwtDateScaleDraw( Qt::TimeSpec = Qt::LocalTime ); |
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virtual ~QwtDateScaleDraw(); |
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void setDateFormat( QwtDate::IntervalType, const QString & ); |
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QString dateFormat( QwtDate::IntervalType ) const; |
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void setTimeSpec( Qt::TimeSpec ); |
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Qt::TimeSpec timeSpec() const; |
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void setUtcOffset( int seconds ); |
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int utcOffset() const; |
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void setWeek0Type( QwtDate::Week0Type ); |
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QwtDate::Week0Type week0Type() const; |
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virtual QwtText label( double ) const; |
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QDateTime toDateTime( double ) const; |
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protected: |
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virtual QwtDate::IntervalType |
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intervalType( const QwtScaleDiv & ) const; |
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virtual QString dateFormatOfDate( const QDateTime &, |
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QwtDate::IntervalType ) const; |
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private: |
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class PrivateData; |
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PrivateData *d_data; |
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}; |
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#endif
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