QVision: Qt's Image, Video and Computer Vision Library

00001 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
00002  * Qwt Widget Library
00003  * Copyright (C) 1997   Josef Wilgen
00004  * Copyright (C) 2002   Uwe Rathmann
00005  *
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the Qwt License, Version 1.0
00008  *****************************************************************************/
00009 
00010 #ifndef QVHISTOGRAM_H
00011 #define QVHISTOGRAM_H
00012 
00013 #include <qglobal.h>
00014 #include <qcolor.h>
00015 
00016 #include <qwt_plot_item.h>
00017 
00018 #ifndef DOXYGEN_IGNORE_THIS
00019 class QwtIntervalData;
00020 class QString;
00021 
00022 class QVHistogram: public QwtPlotItem
00023 {
00024 public:
00025     explicit QVHistogram(const QString &title = QString::null);
00026     explicit QVHistogram(const QwtText &title);
00027     virtual ~QVHistogram();
00028 
00029     void setData(const QwtIntervalData &data);
00030     const QwtIntervalData &data() const;
00031 
00032     void setColor(const QColor &);
00033     QColor color() const;
00034 
00035     virtual QwtDoubleRect boundingRect() const;
00036 
00037     virtual int rtti() const;
00038 
00039     virtual void draw(QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRect &) const;
00040 
00041     void setBaseline(double reference);
00042     double baseline() const;
00043 
00044     enum HistogramAttribute
00045     {
00046         Auto = 0,
00047         Xfy = 1
00048     };
00049 
00050     void setHistogramAttribute(HistogramAttribute, bool on = true);
00051     bool testHistogramAttribute(HistogramAttribute) const;
00052 
00053 protected:
00054     virtual void drawBar(QPainter *,
00055         Qt::Orientation o, const QRect &) const;
00056 
00057 private:
00058     void init();
00059 
00060     class PrivateData;
00061     PrivateData *d_data;
00062 };
00063 
00064 #endif
00065 #endif
00066
src/qvblockprogramming/qvguiblocks/qvhistogram.h
