Qwt User's Guide 6.1.1

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qwt_plot_layout.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_PLOT_LAYOUT_H
11 #define QWT_PLOT_LAYOUT_H
12
13 #include "qwt_global.h"
14 #include "qwt_plot.h"
15
26 class QWT_EXPORT QwtPlotLayout
27 {
28 public:
33 enum Option
34 {
36 AlignScales = 0x01,
37
42 IgnoreScrollbars = 0x02,
43
45 IgnoreFrames = 0x04,
46
48 IgnoreLegend = 0x08,
49
51 IgnoreTitle = 0x10,
52
54 IgnoreFooter = 0x20
55 };
56
58 typedef QFlags<Option> Options;
59
60 explicit QwtPlotLayout();
61 virtual ~QwtPlotLayout();
62
63 void setCanvasMargin( int margin, int axis = -1 );
64 int canvasMargin( int axis ) const;
65
66 void setAlignCanvasToScales( bool );
67
68 void setAlignCanvasToScale( int axisId, bool );
69 bool alignCanvasToScale( int axisId ) const;
70
71 void setSpacing( int );
72 int spacing() const;
73
74 void setLegendPosition( QwtPlot::LegendPosition pos, double ratio );
75 void setLegendPosition( QwtPlot::LegendPosition pos );
76 QwtPlot::LegendPosition legendPosition() const;
77
78 void setLegendRatio( double ratio );
79 double legendRatio() const;
80
81 virtual QSize minimumSizeHint( const QwtPlot * ) const;
82
83 virtual void activate( const QwtPlot *,
84 const QRectF &rect, Options options = 0x00 );
85
86 virtual void invalidate();
87
88 QRectF titleRect() const;
89 QRectF footerRect() const;
90 QRectF legendRect() const;
91 QRectF scaleRect( int axis ) const;
92 QRectF canvasRect() const;
93
94 class LayoutData;
95
96 protected:
97
98 void setTitleRect( const QRectF & );
99 void setFooterRect( const QRectF & );
100 void setLegendRect( const QRectF & );
101 void setScaleRect( int axis, const QRectF & );
102 void setCanvasRect( const QRectF & );
103
104 QRectF layoutLegend( Options options, const QRectF & ) const;
105 QRectF alignLegend( const QRectF &canvasRect,
106 const QRectF &legendRect ) const;
107
108 void expandLineBreaks( Options options, const QRectF &rect,
109 int &dimTitle, int &dimFooter, int dimAxes[QwtPlot::axisCnt] ) const;
110
111 void alignScales( Options options, QRectF &canvasRect,
112 QRectF scaleRect[QwtPlot::axisCnt] ) const;
113
114 private:
115 class PrivateData;
116
117 PrivateData *d_data;
118 };
119
120 Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotLayout::Options )
121
122 #endif
QwtPlot::axisCnt
Number of axes.
Definition: qwt_plot.h:108
QwtPlot::LegendPosition
LegendPosition
Definition: qwt_plot.h:116
QwtPlotLayout
Layout engine for QwtPlot.
Definition: qwt_plot_layout.h:26
QwtPlot
A 2-D plotting widget.
Definition: qwt_plot.h:74
QwtPlotLayout::Options
QFlags< Option > Options
Layout options.
Definition: qwt_plot_layout.h:58
QwtPlotLayout::Option
Option
Definition: qwt_plot_layout.h:33