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/* -*- 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_SCALE_DRAW_H
#define QWT_SCALE_DRAW_H
#include "qwt_global.h"
#include "qwt_abstract_scale_draw.h"
#include <qpoint.h>
#include <qrect.h>
#include <qtransform.h>
/*!
\brief A class for drawing scales
QwtScaleDraw can be used to draw linear or logarithmic scales.
A scale has a position, an alignment and a length, which can be specified .
The labels can be rotated and aligned
to the ticks using setLabelRotation() and setLabelAlignment().
After a scale division has been specified as a QwtScaleDiv object
using QwtAbstractScaleDraw::setScaleDiv(const QwtScaleDiv &s),
the scale can be drawn with the QwtAbstractScaleDraw::draw() member.
*/
class QWT_EXPORT QwtScaleDraw: public QwtAbstractScaleDraw
{
public:
/*!
Alignment of the scale draw
\sa setAlignment(), alignment()
*/
enum Alignment
{
//! The scale is below
BottomScale,
//! The scale is above
TopScale,
//! The scale is left
LeftScale,
//! The scale is right
RightScale
};
QwtScaleDraw();
virtual ~QwtScaleDraw();
void getBorderDistHint( const QFont &, int &start, int &end ) const;
int minLabelDist( const QFont & ) const;
int minLength( const QFont & ) const;
virtual double extent( const QFont & ) const;
void move( double x, double y );
void move( const QPointF & );
void setLength( double length );
Alignment alignment() const;
void setAlignment( Alignment );
Qt::Orientation orientation() const;
QPointF pos() const;
double length() const;
void setLabelAlignment( Qt::Alignment );
Qt::Alignment labelAlignment() const;
void setLabelRotation( double rotation );
double labelRotation() const;
int maxLabelHeight( const QFont & ) const;
int maxLabelWidth( const QFont & ) const;
QPointF labelPosition( double val ) const;
QRectF labelRect( const QFont &, double val ) const;
QSizeF labelSize( const QFont &, double val ) const;
QRect boundingLabelRect( const QFont &, double val ) const;
protected:
QTransform labelTransformation( const QPointF &, const QSizeF & ) const;
virtual void drawTick( QPainter *, double val, double len ) const;
virtual void drawBackbone( QPainter * ) const;
virtual void drawLabel( QPainter *, double val ) const;
private:
QwtScaleDraw( const QwtScaleDraw & );
QwtScaleDraw &operator=( const QwtScaleDraw &other );
void updateMap();
class PrivateData;
PrivateData *d_data;
};
/*!
Move the position of the scale
\sa move(const QPointF &)
*/
inline void QwtScaleDraw::move( double x, double y )
{
move( QPointF( x, y ) );
}
#endif
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