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qwt_plot_abstract_barchart.h
/******************************************************************************
* 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_ABSTRACT_BAR_CHART_H
#define QWT_PLOT_ABSTRACT_BAR_CHART_H
#include "qwt_global.h"
#include "qwt_plot_seriesitem.h"
class QWT_EXPORT QwtPlotAbstractBarChart : public QwtPlotSeriesItem
{
public:
enum LayoutPolicy
{
AutoAdjustSamples,
ScaleSamplesToAxes,
ScaleSampleToCanvas,
FixedSampleSize
};
explicit QwtPlotAbstractBarChart( const QwtText& title );
virtual ~QwtPlotAbstractBarChart();
void setLayoutPolicy( LayoutPolicy );
LayoutPolicy layoutPolicy() const;
void setLayoutHint( double );
double layoutHint() const;
void setSpacing( int );
int spacing() const;
void setMargin( int );
int margin() const;
void setBaseline( double );
double baseline() const;
virtual void getCanvasMarginHint(
const QwtScaleMap& xMap, const QwtScaleMap& yMap,
const QRectF& canvasRect, double& left, double& top,
double& right, double& bottom) const QWT_OVERRIDE;
protected:
double sampleWidth( const QwtScaleMap& map,
double canvasSize, double boundingSize,
double value ) const;
private:
class PrivateData;
PrivateData* m_data;
};
#endif
QwtPlotAbstractBarChart
Abstract base class for bar chart items.
Definition qwt_plot_abstract_barchart.h:25
QwtPlotAbstractBarChart::LayoutPolicy
LayoutPolicy
Mode how to calculate the bar width.
Definition qwt_plot_abstract_barchart.h:33
QwtPlotAbstractBarChart::AutoAdjustSamples
@ AutoAdjustSamples
Definition qwt_plot_abstract_barchart.h:41
QwtPlotAbstractBarChart::ScaleSamplesToAxes
@ ScaleSamplesToAxes
Definition qwt_plot_abstract_barchart.h:46
QwtPlotAbstractBarChart::ScaleSampleToCanvas
@ ScaleSampleToCanvas
Definition qwt_plot_abstract_barchart.h:54
QwtPlotItem::getCanvasMarginHint
virtual void getCanvasMarginHint(const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, double &left, double &top, double &right, double &bottom) const
Calculate a hint for the canvas margin.
Definition qwt_plot_item.cpp:595
QwtPlotSeriesItem
Base class for plot items representing a series of samples.
Definition qwt_plot_seriesitem.h:26
QwtScaleMap
A scale map.
Definition qwt_scale_map.h:27
QwtText
A class representing a text.
Definition qwt_text.h:52