Qwt User's Guide 6.1.2

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qwt_plot_barchart.h
1 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
2 * Qwt Widget Library
3 * Copyright (C) 1997 Josef Wilgen
4 * Copyright (C) 2002 Uwe Rathmann
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the Qwt License, Version 1.0
8 *****************************************************************************/
9
10 #ifndef QWT_PLOT_BAR_CHART_H
11 #define QWT_PLOT_BAR_CHART_H
12
13 #include "qwt_global.h"
14 #include "qwt_plot_abstract_barchart.h"
15 #include "qwt_series_data.h"
16
17 class QwtColumnRect;
18 class QwtColumnSymbol;
19
41 class QWT_EXPORT QwtPlotBarChart:
42 public QwtPlotAbstractBarChart, public QwtSeriesStore<QPointF>
43 {
44 public:
51 enum LegendMode
52 {
59 LegendChartTitle,
60
67 LegendBarTitles
68 };
69
70 explicit QwtPlotBarChart( const QString &title = QString::null );
71 explicit QwtPlotBarChart( const QwtText &title );
72
73 virtual ~QwtPlotBarChart();
74
75 virtual int rtti() const;
76
77 void setSamples( const QVector<QPointF> & );
78 void setSamples( const QVector<double> & );
79 void setSamples( QwtSeriesData<QPointF> *series );
80
81 void setSymbol( QwtColumnSymbol * );
82 const QwtColumnSymbol *symbol() const;
83
84 void setLegendMode( LegendMode );
85 LegendMode legendMode() const;
86
87 virtual void drawSeries( QPainter *painter,
88 const QwtScaleMap &xMap, const QwtScaleMap &yMap,
89 const QRectF &canvasRect, int from, int to ) const;
90
91 virtual QRectF boundingRect() const;
92
93 virtual QwtColumnSymbol *specialSymbol(
94 int sampleIndex, const QPointF& ) const;
95
96 virtual QwtText barTitle( int sampleIndex ) const;
97
98 protected:
99 virtual void drawSample( QPainter *painter,
100 const QwtScaleMap &xMap, const QwtScaleMap &yMap,
101 const QRectF &canvasRect, const QwtInterval &boundingInterval,
102 int index, const QPointF& sample ) const;
103
104 virtual void drawBar( QPainter *,
105 int sampleIndex, const QPointF& point,
106 const QwtColumnRect & ) const;
107
108 QList<QwtLegendData> legendData() const;
109 QwtGraphic legendIcon( int index, const QSizeF & ) const;
110
111 private:
112 void init();
113
114 class PrivateData;
115 PrivateData *d_data;
116 };
117
118 #endif
QwtPlotBarChart
QwtPlotBarChart displays a series of a values as bars.
Definition: qwt_plot_barchart.h:41
QwtPlotItem::legendData
virtual QList< QwtLegendData > legendData() const
Return all information, that is needed to represent the item on the legend.
Definition: qwt_plot_item.cpp:595
QwtPlotSeriesItem::boundingRect
virtual QRectF boundingRect() const
Definition: qwt_plot_seriesitem.cpp:94
QwtText
A class representing a text.
Definition: qwt_text.h:51
QwtScaleMap
A scale map.
Definition: qwt_scale_map.h:30
QwtPlotItem::legendIcon
virtual QwtGraphic legendIcon(int index, const QSizeF &) const
Definition: qwt_plot_item.cpp:371
QwtPlotBarChart::LegendChartTitle
Definition: qwt_plot_barchart.h:59
QwtColumnRect
Directed rectangle representing bounding rectangle and orientation of a column.
Definition: qwt_column_symbol.h:28
QwtPlotItem::rtti
virtual int rtti() const
Definition: qwt_plot_item.cpp:120
QwtSeriesData< QPointF >
QwtColumnSymbol
A drawing primitive for columns.
Definition: qwt_column_symbol.h:93
QwtSeriesStore
Class storing a QwtSeriesData object.
Definition: qwt_series_store.h:57
QwtGraphic
A paint device for scalable graphics.
Definition: qwt_graphic.h:74
QwtInterval
A class representing an interval.
Definition: qwt_interval.h:26
QwtPlotBarChart::LegendMode
LegendMode
Legend modes.
Definition: qwt_plot_barchart.h:51
QwtPlotAbstractBarChart
Abstract base class for bar chart items.
Definition: qwt_plot_abstract_barchart.h:25
QwtPlotSeriesItem::drawSeries
virtual void drawSeries(QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const =0