Qwt User's Guide: qwt_legend_data.cpp Source File

Qwt User's Guide 6.3.0

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qwt_legend_data.cpp
1/******************************************************************************
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#include "qwt_legend_data.h"
11#include "qwt_text.h"
12#include "qwt_graphic.h"
13
15QwtLegendData::QwtLegendData()
16{
17}
18
20QwtLegendData::~QwtLegendData()
21{
22}
23
33 void QwtLegendData::setValues( const QMap< int, QVariant >& map )
34{
35 m_map = map;
36}
37
42 const QMap< int, QVariant >& QwtLegendData::values() const
43{
44 return m_map;
45}
46
51 bool QwtLegendData::hasRole( int role ) const
52{
53 return m_map.contains( role );
54}
55
64 void QwtLegendData::setValue( int role, const QVariant& data )
65{
66 m_map[role] = data;
67}
68
73QVariant QwtLegendData::value( int role ) const
74{
75 if ( !m_map.contains( role ) )
76 return QVariant();
77
78 return m_map[role];
79}
80
82 bool QwtLegendData::isValid() const
83{
84 return !m_map.isEmpty();
85}
86
88 QwtText QwtLegendData::title() const
89{
90 QwtText text;
91
92 const QVariant titleValue = value( QwtLegendData::TitleRole );
93 if ( titleValue.canConvert< QwtText >() )
94 {
95 text = qvariant_cast< QwtText >( titleValue );
96 }
97 else if ( titleValue.canConvert< QString >() )
98 {
99 text.setText( qvariant_cast< QString >( titleValue ) );
100 }
101
102 return text;
103}
104
106 QwtGraphic QwtLegendData::icon() const
107{
108 const QVariant iconValue = value( QwtLegendData::IconRole );
109
110 QwtGraphic graphic;
111 if ( iconValue.canConvert< QwtGraphic >() )
112 {
113 graphic = qvariant_cast< QwtGraphic >( iconValue );
114 }
115
116 return graphic;
117}
118
120 QwtLegendData::Mode QwtLegendData::mode() const
121{
122 const QVariant modeValue = value( QwtLegendData::ModeRole );
123 if ( modeValue.canConvert< int >() )
124 {
125 const int mode = qvariant_cast< int >( modeValue );
126 return static_cast< QwtLegendData::Mode >( mode );
127 }
128
129 return QwtLegendData::ReadOnly;
130}
131
QMap< int, QVariant >
QwtGraphic
A paint device for scalable graphics.
Definition qwt_graphic.h:76
QwtLegendData::mode
Mode mode() const
Definition qwt_legend_data.cpp:120
QwtLegendData::setValue
void setValue(int role, const QVariant &)
Definition qwt_legend_data.cpp:64
QwtLegendData::QwtLegendData
QwtLegendData()
Constructor.
Definition qwt_legend_data.cpp:15
QwtLegendData::~QwtLegendData
~QwtLegendData()
Destructor.
Definition qwt_legend_data.cpp:20
QwtLegendData::setValues
void setValues(const QMap< int, QVariant > &)
Definition qwt_legend_data.cpp:33
QwtLegendData::value
QVariant value(int role) const
Definition qwt_legend_data.cpp:73
QwtLegendData::isValid
bool isValid() const
Definition qwt_legend_data.cpp:82
QwtLegendData::Mode
Mode
Mode defining how a legend entry interacts.
Definition qwt_legend_data.h:41
QwtLegendData::ReadOnly
@ ReadOnly
The legend item is not interactive, like a label.
Definition qwt_legend_data.h:43
QwtLegendData::hasRole
bool hasRole(int role) const
Definition qwt_legend_data.cpp:51
QwtLegendData::values
const QMap< int, QVariant > & values() const
Definition qwt_legend_data.cpp:42
QwtLegendData::icon
QwtGraphic icon() const
Definition qwt_legend_data.cpp:106
QwtLegendData::title
QwtText title() const
Definition qwt_legend_data.cpp:88
QwtText
A class representing a text.
Definition qwt_text.h:52
QwtText::setText
void setText(const QString &, QwtText::TextFormat textFormat=AutoText)
Definition qwt_text.cpp:277