qwt_arrow_button.h

/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
 * 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_ARROW_BUTTON_H
#define QWT_ARROW_BUTTON_H

#include <qpushbutton.h>
#include "qwt_global.h"

/*!
  \brief Arrow Button

  A push button with one or more filled triangles on its front.
  An Arrow button can have 1 to 3 arrows in a row, pointing
  up, down, left or right.
*/
class QWT_EXPORT QwtArrowButton : public QPushButton
{
public:
    explicit QwtArrowButton (int num, Qt::ArrowType, QWidget *parent = NULL);
    virtual ~QwtArrowButton();

    Qt::ArrowType arrowType() const;
    int num() const;

    virtual QSize sizeHint() const;
    virtual QSize minimumSizeHint() const;

protected:
#if QT_VERSION >= 0x040000
    virtual void paintEvent(QPaintEvent *event);
#endif

    virtual void drawButtonLabel(QPainter *p);
    virtual void drawArrow(QPainter *,
                           const QRect &, Qt::ArrowType) const;
    virtual QRect labelRect() const;
    virtual QSize arrowSize(Qt::ArrowType,
                            const QSize &boundingSize) const;

    virtual void keyPressEvent(QKeyEvent *);

private:
    class PrivateData;
    PrivateData *d_data;
};

#endif