Add files from zip

2023-10-31 09:22:42 +01:00
parent 6bacdc5f6d
commit 4dae68036f
2788 changed files with 492537 additions and 0 deletions
--- a/src/qwt_plot_histogram.h
+++ b/src/qwt_plot_histogram.h
@@ -0,0 +1,145 @@
+/******************************************************************************
+ * 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_HISTOGRAM_H
+#define QWT_PLOT_HISTOGRAM_H
+
+#include "qwt_global.h"
+#include "qwt_plot_seriesitem.h"
+
+class QwtColumnSymbol;
+class QwtColumnRect;
+class QColor;
+class QPolygonF;
+
+#if QT_VERSION < 0x060000
+template< typename T > class QVector;
+#endif
+
+/*!
+   \brief QwtPlotHistogram represents a series of samples, where an interval
+         is associated with a value ( \f$y = f([x1,x2])\f$ ).
+
+   The representation depends on the style() and an optional symbol()
+   that is displayed for each interval.
+
+   \note The term "histogram" is used in a different way in the areas of
+        digital image processing and statistics. Wikipedia introduces the
+        terms "image histogram" and "color histogram" to avoid confusions.
+        While "image histograms" can be displayed by a QwtPlotCurve there
+        is no applicable plot item for a "color histogram" yet.
+
+   \sa QwtPlotBarChart, QwtPlotMultiBarChart
+ */
+
+class QWT_EXPORT QwtPlotHistogram
+    : public QwtPlotSeriesItem
+    , public QwtSeriesStore< QwtIntervalSample >
+{
+  public:
+    /*!
+        Histogram styles.
+        The default style is QwtPlotHistogram::Columns.
+
+        \sa setStyle(), style(), setSymbol(), symbol(), setBaseline()
+     */
+    enum HistogramStyle
+    {
+        /*!
+           Draw an outline around the area, that is build by all intervals
+           using the pen() and fill it with the brush(). The outline style
+           requires, that the intervals are in increasing order and
+           not overlapping.
+         */
+        Outline,
+
+        /*!
+           Draw a column for each interval. When a symbol() has been set
+           the symbol is used otherwise the column is displayed as
+           plain rectangle using pen() and brush().
+         */
+        Columns,
+
+        /*!
+           Draw a simple line using the pen() for each interval.
+         */
+        Lines,
+
+        /*!
+           Styles >= UserStyle are reserved for derived
+           classes that overload drawSeries() with
+           additional application specific ways to display a histogram.
+         */
+        UserStyle = 100
+    };
+
+    explicit QwtPlotHistogram( const QString& title = QString() );
+    explicit QwtPlotHistogram( const QwtText& title );
+    virtual ~QwtPlotHistogram();
+
+    virtual int rtti() const QWT_OVERRIDE;
+
+    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 setSamples( const QVector< QwtIntervalSample >& );
+    void setSamples( QwtSeriesData< QwtIntervalSample >* );
+
+    void setBaseline( double );
+    double baseline() const;
+
+    void setStyle( HistogramStyle style );
+    HistogramStyle style() const;
+
+    void setSymbol( const QwtColumnSymbol* );
+    const QwtColumnSymbol* symbol() const;
+
+    virtual void drawSeries( QPainter*,
+        const QwtScaleMap& xMap, const QwtScaleMap& yMap,
+        const QRectF& canvasRect, int from, int to ) const QWT_OVERRIDE;
+
+    virtual QRectF boundingRect() const QWT_OVERRIDE;
+
+    virtual QwtGraphic legendIcon(
+        int index, const QSizeF& ) const QWT_OVERRIDE;
+
+  protected:
+    virtual QwtColumnRect columnRect( const QwtIntervalSample&,
+        const QwtScaleMap&, const QwtScaleMap& ) const;
+
+    virtual void drawColumn( QPainter*, const QwtColumnRect&,
+        const QwtIntervalSample& ) const;
+
+    void drawColumns( QPainter*,
+        const QwtScaleMap& xMap, const QwtScaleMap& yMap,
+        int from, int to ) const;
+
+    void drawOutline( QPainter*,
+        const QwtScaleMap& xMap, const QwtScaleMap& yMap,
+        int from, int to ) const;
+
+    void drawLines( QPainter*,
+        const QwtScaleMap& xMap, const QwtScaleMap& yMap,
+        int from, int to ) const;
+
+  private:
+    void init();
+    void flushPolygon( QPainter*, double baseLine, QPolygonF& ) const;
+
+    class PrivateData;
+    PrivateData* m_data;
+};
+
+#endif