1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
* Qwt Widget Library
* Copyright (C) 1997 Josef Wilgen
* Copyright (C) 2002 Uwe Rathmann
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the Qwt License, Version 1.0
*****************************************************************************/
#ifndef QWT_PLOT_LAYOUT_H
#define QWT_PLOT_LAYOUT_H
#include "qwt_global.h"
#include "qwt_plot.h"
/*!
\brief Layout engine for QwtPlot.
It is used by the QwtPlot widget to organize its internal widgets
or by QwtPlot::print() to render its content to a QPaintDevice like
a QPrinter, QPixmap/QImage or QSvgRenderer.
\sa QwtPlot::setPlotLayout()
*/
class QWT_EXPORT QwtPlotLayout
{
public:
/*!
Options to configure the plot layout engine
\sa activate(), QwtPlotRenderer
*/
enum Option
{
//! Unused
AlignScales = 0x01,
/*!
Ignore the dimension of the scrollbars. There are no
scrollbars, when the plot is not rendered to widgets.
*/
IgnoreScrollbars = 0x02,
//! Ignore all frames.
IgnoreFrames = 0x04,
//! Ignore the legend.
IgnoreLegend = 0x08,
//! Ignore the title.
IgnoreTitle = 0x10,
//! Ignore the footer.
IgnoreFooter = 0x20
};
//! Layout options
typedef QFlags<Option> Options;
explicit QwtPlotLayout();
virtual ~QwtPlotLayout();
void setCanvasMargin( int margin, int axis = -1 );
int canvasMargin( int axis ) const;
void setAlignCanvasToScales( bool );
void setAlignCanvasToScale( int axisId, bool );
bool alignCanvasToScale( int axisId ) const;
void setSpacing( int );
int spacing() const;
void setLegendPosition( QwtPlot::LegendPosition pos, double ratio );
void setLegendPosition( QwtPlot::LegendPosition pos );
QwtPlot::LegendPosition legendPosition() const;
void setLegendRatio( double ratio );
double legendRatio() const;
virtual QSize minimumSizeHint( const QwtPlot * ) const;
virtual void activate( const QwtPlot *,
const QRectF &rect, Options options = 0x00 );
virtual void invalidate();
QRectF titleRect() const;
QRectF footerRect() const;
QRectF legendRect() const;
QRectF scaleRect( int axis ) const;
QRectF canvasRect() const;
class LayoutData;
protected:
void setTitleRect( const QRectF & );
void setFooterRect( const QRectF & );
void setLegendRect( const QRectF & );
void setScaleRect( int axis, const QRectF & );
void setCanvasRect( const QRectF & );
QRectF layoutLegend( Options options, const QRectF & ) const;
QRectF alignLegend( const QRectF &canvasRect,
const QRectF &legendRect ) const;
void expandLineBreaks( Options options, const QRectF &rect,
int &dimTitle, int &dimFooter, int dimAxes[QwtPlot::axisCnt] ) const;
void alignScales( Options options, QRectF &canvasRect,
QRectF scaleRect[QwtPlot::axisCnt] ) const;
private:
class PrivateData;
PrivateData *d_data;
};
Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotLayout::Options )
#endif