Qwt User's Guide 6.1.0

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qwt_scale_widget.h
1 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
2 * Qwt Widget Library
3 * Copyright (C) 1997 Josef Wilgen
4 * Copyright (C) 2002 Uwe Rathmann
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the Qwt License, Version 1.0
8 *****************************************************************************/
9
10 #ifndef QWT_SCALE_WIDGET_H
11 #define QWT_SCALE_WIDGET_H
12
13 #include "qwt_global.h"
14 #include "qwt_text.h"
15 #include "qwt_scale_draw.h"
16 #include <qwidget.h>
17 #include <qfont.h>
18 #include <qcolor.h>
19 #include <qstring.h>
20
21 class QPainter;
22 class QwtTransform;
23 class QwtScaleDiv;
24 class QwtColorMap;
25
33 class QWT_EXPORT QwtScaleWidget : public QWidget
34 {
35 Q_OBJECT
36
37 public:
39 enum LayoutFlag
40 {
45 TitleInverted = 1
46 };
47
49 typedef QFlags<LayoutFlag> LayoutFlags;
50
51 explicit QwtScaleWidget( QWidget *parent = NULL );
52 explicit QwtScaleWidget( QwtScaleDraw::Alignment, QWidget *parent = NULL );
53 virtual ~QwtScaleWidget();
54
55 Q_SIGNALS:
57 void scaleDivChanged();
58
59 public:
60 void setTitle( const QString &title );
61 void setTitle( const QwtText &title );
62 QwtText title() const;
63
64 void setLayoutFlag( LayoutFlag, bool on );
65 bool testLayoutFlag( LayoutFlag ) const;
66
67 void setBorderDist( int start, int end );
68 int startBorderDist() const;
69 int endBorderDist() const;
70
71 void getBorderDistHint( int &start, int &end ) const;
72
73 void getMinBorderDist( int &start, int &end ) const;
74 void setMinBorderDist( int start, int end );
75
76 void setMargin( int );
77 int margin() const;
78
79 void setSpacing( int td );
80 int spacing() const;
81
82 void setScaleDiv( const QwtScaleDiv &sd );
83 void setTransformation( QwtTransform * );
84
85 void setScaleDraw( QwtScaleDraw * );
86 const QwtScaleDraw *scaleDraw() const;
87 QwtScaleDraw *scaleDraw();
88
89 void setLabelAlignment( Qt::Alignment );
90 void setLabelRotation( double rotation );
91
92 void setColorBarEnabled( bool );
93 bool isColorBarEnabled() const;
94
95 void setColorBarWidth( int );
96 int colorBarWidth() const;
97
98 void setColorMap( const QwtInterval &, QwtColorMap * );
99
100 QwtInterval colorBarInterval() const;
101 const QwtColorMap *colorMap() const;
102
103 virtual QSize sizeHint() const;
104 virtual QSize minimumSizeHint() const;
105
106 int titleHeightForWidth( int width ) const;
107 int dimForLength( int length, const QFont &scaleFont ) const;
108
109 void drawColorBar( QPainter *painter, const QRectF & ) const;
110 void drawTitle( QPainter *painter, QwtScaleDraw::Alignment,
111 const QRectF &rect ) const;
112
113 void setAlignment( QwtScaleDraw::Alignment );
114 QwtScaleDraw::Alignment alignment() const;
115
116 QRectF colorBarRect( const QRectF& ) const;
117
118 protected:
119 virtual void paintEvent( QPaintEvent * );
120 virtual void resizeEvent( QResizeEvent * );
121
122 void draw( QPainter *p ) const;
123
124 void scaleChange();
125 void layoutScale( bool update = true );
126
127 private:
128 void initScale( QwtScaleDraw::Alignment );
129
130 class PrivateData;
131 PrivateData *d_data;
132 };
133
134 Q_DECLARE_OPERATORS_FOR_FLAGS( QwtScaleWidget::LayoutFlags )
135
136 #endif