mirror of
https://github.com/qgis/QGIS.git
synced 2025-10-04 00:04:03 -04:00
33fc476d89
* require qwt >=6.2 (and fallback to internal 6.3 if system's qwt doesn't suffice) * debian doesn't have qwt for Qt6 and won't have it for trixie
97 lines
2.6 KiB
C++
97 lines
2.6 KiB
C++
/******************************************************************************
|
|
* 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"
|
|
|
|
/*!
|
|
\brief Abstract base class for bar chart items
|
|
|
|
In opposite to almost all other plot items bar charts can't be
|
|
displayed inside of their bounding rectangle and need a special
|
|
API how to calculate the width of the bars and how they affect
|
|
the layout of the attached plot.
|
|
*/
|
|
class QWT_EXPORT QwtPlotAbstractBarChart : public QwtPlotSeriesItem
|
|
{
|
|
public:
|
|
/*!
|
|
\brief Mode how to calculate the bar width
|
|
|
|
setLayoutPolicy(), setLayoutHint(), barWidthHint()
|
|
*/
|
|
enum LayoutPolicy
|
|
{
|
|
/*!
|
|
The sample width is calculated by dividing the bounding rectangle
|
|
by the number of samples. The layoutHint() is used as a minimum width
|
|
in paint device coordinates.
|
|
|
|
\sa boundingRectangle()
|
|
*/
|
|
AutoAdjustSamples,
|
|
|
|
/*!
|
|
layoutHint() defines an interval in axis coordinates
|
|
*/
|
|
ScaleSamplesToAxes,
|
|
|
|
/*!
|
|
The bar width is calculated by multiplying layoutHint()
|
|
with the height or width of the canvas.
|
|
|
|
\sa boundingRectangle()
|
|
*/
|
|
ScaleSampleToCanvas,
|
|
|
|
/*!
|
|
layoutHint() defines a fixed width in paint device coordinates.
|
|
*/
|
|
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
|