彻底改版2.0

2021-11-17 16:41:30 +08:00
parent a7f4347959
commit ebfd531a91
2622 changed files with 8915 additions and 7263 deletions
--- a/third/3rd_qwt/qwt_date_scale_engine.h
+++ b/third/3rd_qwt/qwt_date_scale_engine.h
@@ -0,0 +1,86 @@
+/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
+ * Qwt Widget Library
+ * Copyright (C) 1997   Josef Wilgen
+ * Copyright (C) 2002   Uwe Rathmann
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the Qwt License, Version 1.0
+ *****************************************************************************/
+
+#ifndef _QWT_DATE_SCALE_ENGINE_H_
+#define _QWT_DATE_SCALE_ENGINE_H_ 1
+
+#include "qwt_date.h"
+#include "qwt_scale_engine.h"
+
+/*!
+  \brief A scale engine for date/time values
+
+  QwtDateScaleEngine builds scales from a time intervals.
+  Together with QwtDateScaleDraw it can be used for
+  axes according to date/time values.
+
+  Years, months, weeks, days, hours and minutes are organized
+  in steps with non constant intervals. QwtDateScaleEngine
+  classifies intervals and aligns the boundaries and tick positions
+  according to this classification.
+
+  QwtDateScaleEngine supports representations depending
+  on Qt::TimeSpec specifications. The valid range for scales
+  is limited by the range of QDateTime, that differs
+  between Qt4 and Qt5.
+
+  Datetime values are expected as the number of milliseconds since
+  1970-01-01T00:00:00 Universal Coordinated Time - also known
+  as "The Epoch", that can be converted to QDateTime using
+  QwtDate::toDateTime().
+
+  \sa QwtDate, QwtPlot::setAxisScaleEngine(),
+      QwtAbstractScale::setScaleEngine()
+*/
+class QWT_EXPORT QwtDateScaleEngine: public QwtLinearScaleEngine
+{
+public:
+    QwtDateScaleEngine( Qt::TimeSpec = Qt::LocalTime );
+    virtual ~QwtDateScaleEngine();
+
+    void setTimeSpec( Qt::TimeSpec );
+    Qt::TimeSpec timeSpec() const;
+
+    void setUtcOffset( int seconds );
+    int utcOffset() const;
+
+    void setWeek0Type( QwtDate::Week0Type );
+    QwtDate::Week0Type week0Type() const;
+
+    void setMaxWeeks( int );
+    int maxWeeks() const;
+
+    virtual void autoScale( int maxNumSteps,
+        double &x1, double &x2, double &stepSize ) const;
+
+    virtual QwtScaleDiv divideScale(
+        double x1, double x2,
+        int maxMajorSteps, int maxMinorSteps,
+        double stepSize = 0.0 ) const;
+
+    virtual QwtDate::IntervalType intervalType(
+        const QDateTime &, const QDateTime &, int maxSteps ) const;
+
+    QDateTime toDateTime( double ) const;
+
+protected:
+    virtual QDateTime alignDate( const QDateTime &, double stepSize,
+        QwtDate::IntervalType, bool up ) const;
+
+private:
+    QwtScaleDiv buildScaleDiv( const QDateTime &, const QDateTime &,
+        int maxMajorSteps, int maxMinorSteps,
+        QwtDate::IntervalType ) const;
+
+private:
+    class PrivateData;
+    PrivateData *d_data;
+};
+
+#endif