121 lines
3.1 KiB
C
121 lines
3.1 KiB
C
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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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* Qwt Widget Library
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* Copyright (C) 1997 Josef Wilgen
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* Copyright (C) 2002 Uwe Rathmann
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the Qwt License, Version 1.0
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*****************************************************************************/
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#ifndef QWT_SCALE_DRAW_H
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#define QWT_SCALE_DRAW_H
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#include "qwt_global.h"
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#include "qwt_abstract_scale_draw.h"
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#include <qpoint.h>
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#include <qrect.h>
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#include <qtransform.h>
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/*!
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\brief A class for drawing scales
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QwtScaleDraw can be used to draw linear or logarithmic scales.
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A scale has a position, an alignment and a length, which can be specified .
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The labels can be rotated and aligned
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to the ticks using setLabelRotation() and setLabelAlignment().
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After a scale division has been specified as a QwtScaleDiv object
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using QwtAbstractScaleDraw::setScaleDiv(const QwtScaleDiv &s),
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the scale can be drawn with the QwtAbstractScaleDraw::draw() member.
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*/
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class QWT_EXPORT QwtScaleDraw: public QwtAbstractScaleDraw
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{
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public:
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/*!
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Alignment of the scale draw
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\sa setAlignment(), alignment()
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*/
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enum Alignment
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{
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//! The scale is below
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BottomScale,
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//! The scale is above
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TopScale,
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//! The scale is left
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LeftScale,
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//! The scale is right
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RightScale
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};
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QwtScaleDraw();
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virtual ~QwtScaleDraw();
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void getBorderDistHint( const QFont &, int &start, int &end ) const;
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int minLabelDist( const QFont & ) const;
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int minLength( const QFont & ) const;
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virtual double extent( const QFont & ) const;
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void move( double x, double y );
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void move( const QPointF & );
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void setLength( double length );
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Alignment alignment() const;
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void setAlignment( Alignment );
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Qt::Orientation orientation() const;
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QPointF pos() const;
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double length() const;
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void setLabelAlignment( Qt::Alignment );
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Qt::Alignment labelAlignment() const;
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void setLabelRotation( double rotation );
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double labelRotation() const;
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int maxLabelHeight( const QFont & ) const;
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int maxLabelWidth( const QFont & ) const;
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QPointF labelPosition( double val ) const;
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QRectF labelRect( const QFont &, double val ) const;
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QSizeF labelSize( const QFont &, double val ) const;
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QRect boundingLabelRect( const QFont &, double val ) const;
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protected:
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QTransform labelTransformation( const QPointF &, const QSizeF & ) const;
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virtual void drawTick( QPainter *, double val, double len ) const;
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virtual void drawBackbone( QPainter * ) const;
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virtual void drawLabel( QPainter *, double val ) const;
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private:
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QwtScaleDraw( const QwtScaleDraw & );
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QwtScaleDraw &operator=( const QwtScaleDraw &other );
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void updateMap();
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class PrivateData;
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PrivateData *d_data;
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};
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/*!
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Move the position of the scale
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\param x X coordinate
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\param y Y coordinate
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\sa move(const QPointF &)
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*/
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inline void QwtScaleDraw::move( double x, double y )
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{
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move( QPointF( x, y ) );
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}
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#endif
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