[89] | 1 | /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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| 2 | * Qwt Widget Library
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| 3 | * Copyright (C) 1997 Josef Wilgen
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| 4 | * Copyright (C) 2002 Uwe Rathmann
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| 5 | *
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| 6 | * This library is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the Qwt License, Version 1.0
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| 8 | *****************************************************************************/
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| 9 |
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| 10 | #ifndef QWT_SCALE_DRAW_H
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| 11 | #define QWT_SCALE_DRAW_H
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| 12 |
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| 13 | #include <qpoint.h>
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| 14 | #include "qwt_global.h"
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| 15 | #include "qwt_abstract_scale_draw.h"
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| 16 |
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| 17 | /*!
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| 18 | \brief A class for drawing scales
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| 19 |
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| 20 | QwtScaleDraw can be used to draw linear or logarithmic scales.
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| 21 | A scale has a position, an alignment and a length, which can be specified .
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| 22 | The labels can be rotated and aligned
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| 23 | to the ticks using setLabelRotation() and setLabelAlignment().
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| 24 |
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| 25 | After a scale division has been specified as a QwtScaleDiv object
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| 26 | using QwtAbstractScaleDraw::setScaleDiv(const QwtScaleDiv &s),
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| 27 | the scale can be drawn with the QwtAbstractScaleDraw::draw() member.
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| 28 | */
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| 29 |
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| 30 | class QWT_EXPORT QwtScaleDraw: public QwtAbstractScaleDraw
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| 31 | {
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| 32 | public:
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| 33 | /*!
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| 34 | Alignment of the scale draw
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| 35 | \sa setAlignment(), alignment()
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| 36 | */
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| 37 | enum Alignment { BottomScale, TopScale, LeftScale, RightScale };
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| 38 |
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| 39 | QwtScaleDraw();
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| 40 | QwtScaleDraw(const QwtScaleDraw &);
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| 41 |
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| 42 | virtual ~QwtScaleDraw();
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| 43 |
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| 44 | QwtScaleDraw &operator=(const QwtScaleDraw &other);
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| 45 |
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| 46 | void getBorderDistHint(const QFont &, int &start, int &end) const;
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| 47 | int minLabelDist(const QFont &) const;
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| 48 |
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| 49 | int minLength(const QPen &, const QFont &) const;
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| 50 | virtual int extent(const QPen &, const QFont &) const;
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| 51 |
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| 52 | void move(int x, int y);
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| 53 | void move(const QPoint &);
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| 54 | void setLength(int length);
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| 55 |
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| 56 | Alignment alignment() const;
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| 57 | void setAlignment(Alignment);
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| 58 |
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| 59 | Qt::Orientation orientation() const;
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| 60 |
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| 61 | QPoint pos() const;
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| 62 | int length() const;
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| 63 |
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| 64 | #if QT_VERSION < 0x040000
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| 65 | void setLabelAlignment(int);
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| 66 | int labelAlignment() const;
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| 67 | #else
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| 68 | void setLabelAlignment(Qt::Alignment);
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| 69 | Qt::Alignment labelAlignment() const;
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| 70 | #endif
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| 71 |
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| 72 | void setLabelRotation(double rotation);
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| 73 | double labelRotation() const;
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| 74 |
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| 75 | int maxLabelHeight(const QFont &) const;
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| 76 | int maxLabelWidth(const QFont &) const;
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| 77 |
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| 78 | QPoint labelPosition(double val) const;
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| 79 |
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| 80 | QRect labelRect(const QFont &, double val) const;
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| 81 | QSize labelSize(const QFont &, double val) const;
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| 82 |
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| 83 | QRect boundingLabelRect(const QFont &, double val) const;
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| 84 |
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| 85 | protected:
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| 86 |
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| 87 | #if QT_VERSION < 0x040000
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| 88 | QWMatrix labelMatrix(const QPoint &, const QSize &) const;
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| 89 | #else
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| 90 | QMatrix labelMatrix(const QPoint &, const QSize &) const;
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| 91 | #endif
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| 92 |
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| 93 | virtual void drawTick(QPainter *p, double val, int len) const;
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| 94 | virtual void drawBackbone(QPainter *p) const;
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| 95 | virtual void drawLabel(QPainter *p, double val) const;
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| 96 |
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| 97 | private:
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| 98 | void updateMap();
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| 99 |
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| 100 | class PrivateData;
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| 101 | PrivateData *d_data;
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| 102 | };
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| 103 |
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| 104 | /*!
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| 105 | Move the position of the scale
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| 106 | \sa move(const QPoint &)
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| 107 | */
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| 108 | inline void QwtScaleDraw::move(int x, int y)
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| 109 | {
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| 110 | move(QPoint(x, y));
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| 111 | }
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| 112 |
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| 113 | #endif
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