新增qwt源码版本

2019-11-07 10:56:33 +08:00
parent d9b38d7ecd
commit 4746999d0e
377 changed files with 81225 additions and 1 deletions
--- a/qwtdemo/qwt/qwt_plot_intervalcurve.h
+++ b/qwtdemo/qwt/qwt_plot_intervalcurve.h
@@ -0,0 +1,132 @@
+/* -*- 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_PLOT_INTERVAL_CURVE_H
+#define QWT_PLOT_INTERVAL_CURVE_H
+
+#include "qwt_global.h"
+#include "qwt_plot_seriesitem.h"
+#include "qwt_series_data.h"
+
+class QwtIntervalSymbol;
+
+/*!
+  \brief QwtPlotIntervalCurve represents a series of samples, where each value
+         is associated with an interval ( \f$[y1,y2] = f(x)\f$ ).
+
+  The representation depends on the style() and an optional symbol()
+  that is displayed for each interval. QwtPlotIntervalCurve might be used
+  to display error bars or the area between 2 curves.
+*/
+class QWT_EXPORT QwtPlotIntervalCurve: 
+    public QwtPlotSeriesItem, public QwtSeriesStore<QwtIntervalSample>
+{
+public:
+    /*!
+        \brief Curve styles.
+        The default setting is QwtPlotIntervalCurve::Tube.
+
+        \sa setStyle(), style()
+    */
+    enum CurveStyle
+    {
+        /*!
+           Don't draw a curve. Note: This doesn't affect the symbols.
+         */
+        NoCurve,
+
+        /*!
+           Build 2 curves from the upper and lower limits of the intervals
+           and draw them with the pen(). The area between the curves is
+           filled with the brush().
+         */
+        Tube,
+
+        /*!
+           Styles >= QwtPlotIntervalCurve::UserCurve are reserved for derived
+           classes that overload drawSeries() with
+           additional application specific curve types.
+         */
+        UserCurve = 100
+    };
+
+    /*!
+        Attributes to modify the drawing algorithm.
+        \sa setPaintAttribute(), testPaintAttribute()
+    */
+    enum PaintAttribute
+    {
+        /*!
+          Clip polygons before painting them. In situations, where points
+          are far outside the visible area (f.e when zooming deep) this
+          might be a substantial improvement for the painting performance.
+         */
+        ClipPolygons = 0x01,
+
+        //! Check if a symbol is on the plot canvas before painting it.
+        ClipSymbol   = 0x02
+    };
+
+    //! Paint attributes
+    typedef QFlags<PaintAttribute> PaintAttributes;
+
+    explicit QwtPlotIntervalCurve( const QString &title = QString::null );
+    explicit QwtPlotIntervalCurve( const QwtText &title );
+
+    virtual ~QwtPlotIntervalCurve();
+
+    virtual int rtti() const;
+
+    void setPaintAttribute( PaintAttribute, bool on = true );
+    bool testPaintAttribute( PaintAttribute ) const;
+
+    void setSamples( const QVector<QwtIntervalSample> & );
+    void setSamples( QwtSeriesData<QwtIntervalSample> * );
+
+    void setPen( const QColor &, qreal width = 0.0, Qt::PenStyle = Qt::SolidLine );
+    void setPen( const QPen & );
+    const QPen &pen() const;
+
+    void setBrush( const QBrush & );
+    const QBrush &brush() const;
+
+    void setStyle( CurveStyle style );
+    CurveStyle style() const;
+
+    void setSymbol( const QwtIntervalSymbol * );
+    const QwtIntervalSymbol *symbol() const;
+
+    virtual void drawSeries( QPainter *p,
+        const QwtScaleMap &xMap, const QwtScaleMap &yMap,
+        const QRectF &canvasRect, int from, int to ) const;
+
+    virtual QRectF boundingRect() const;
+
+    virtual QwtGraphic legendIcon( int index, const QSizeF & ) const;
+
+protected:
+
+    void init();
+
+    virtual void drawTube( QPainter *,
+        const QwtScaleMap &xMap, const QwtScaleMap &yMap,
+        const QRectF &canvasRect, int from, int to ) const;
+
+    virtual void drawSymbols( QPainter *, const QwtIntervalSymbol &,
+        const QwtScaleMap &xMap, const QwtScaleMap &yMap,
+        const QRectF &canvasRect, int from, int to ) const;
+
+private:
+    class PrivateData;
+    PrivateData *d_data;
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotIntervalCurve::PaintAttributes )
+
+#endif