QGIS API Documentation
3.16.0-Hannover (43b64b13f3)
src
core
fieldformatter
qgskeyvaluefieldformatter.cpp
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/***************************************************************************
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qgskeyvaluefieldformatter.cpp - QgsKeyValueFieldFormatter
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---------------------
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begin : 3.12.2016
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copyright : (C) 2016 by Matthias Kuhn
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email :
[email protected]
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include "
qgskeyvaluefieldformatter.h
"
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#include "
qgsapplication.h
"
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#include <QSettings>
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QString
QgsKeyValueFieldFormatter::id
()
const
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{
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return
QStringLiteral(
"KeyValue"
);
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}
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QString
QgsKeyValueFieldFormatter::representValue
(
QgsVectorLayer
*layer,
int
fieldIndex,
const
QVariantMap &config,
const
QVariant &cache,
const
QVariant &value )
const
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{
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Q_UNUSED( layer )
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Q_UNUSED( fieldIndex )
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Q_UNUSED( config )
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Q_UNUSED( cache )
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if
( value.isNull() )
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{
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return
QgsApplication::nullRepresentation
();
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}
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QString result;
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const
QVariantMap map = value.toMap();
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for
( QVariantMap::const_iterator i = map.constBegin(); i != map.constEnd(); ++i )
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{
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if
( !result.isEmpty() )
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result.append(
", "
);
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result.append( i.key() ).append(
": "
).append( i.value().toString() );
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}
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return
result;
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}
qgskeyvaluefieldformatter.h
qgsapplication.h
QgsKeyValueFieldFormatter::id
QString id() const override
Returns a unique id for this field formatter.
Definition:
qgskeyvaluefieldformatter.cpp:21
QgsApplication::nullRepresentation
static QString nullRepresentation()
This string is used to represent the value NULL throughout QGIS.
Definition:
qgsapplication.cpp:1851
QgsVectorLayer
Represents a vector layer which manages a vector based data sets.
Definition:
qgsvectorlayer.h:387
QgsKeyValueFieldFormatter::representValue
QString representValue(QgsVectorLayer *layer, int fieldIndex, const QVariantMap &config, const QVariant &cache, const QVariant &value) const override
Create a pretty String representation of the value.
Definition:
qgskeyvaluefieldformatter.cpp:26
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