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120 lines
3.1 KiB
120 lines
3.1 KiB
/* -*- 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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