/
qgsclassificationwidgetwrapper.cpp
76 lines (63 loc) · 2.56 KB
/
qgsclassificationwidgetwrapper.cpp
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
/***************************************************************************
qgsclassificationwidgetwrapper.cpp
--------------------------------------
Date : 5.1.2014
Copyright : (C) 2014 Matthias Kuhn
Email : matthias at opengis dot ch
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgsclassificationwidgetwrapper.h"
#include "qgscategorizedsymbolrenderer.h"
#include "qgsvectorlayer.h"
QgsClassificationWidgetWrapper::QgsClassificationWidgetWrapper( QgsVectorLayer *vl, int fieldIdx, QWidget *editor, QWidget *parent )
: QgsEditorWidgetWrapper( vl, fieldIdx, editor, parent )
{
}
QVariant QgsClassificationWidgetWrapper::value() const
{
return mComboBox->currentData();
}
void QgsClassificationWidgetWrapper::showIndeterminateState()
{
whileBlocking( mComboBox )->setCurrentIndex( -1 );
}
QWidget *QgsClassificationWidgetWrapper::createWidget( QWidget *parent )
{
return new QComboBox( parent );
}
void QgsClassificationWidgetWrapper::initWidget( QWidget *editor )
{
mComboBox = qobject_cast<QComboBox *>( editor );
if ( mComboBox )
{
const QgsCategorizedSymbolRenderer *csr = dynamic_cast<const QgsCategorizedSymbolRenderer *>( layer()->renderer() );
if ( csr )
{
const QgsCategoryList categories = csr->categories();
for ( int i = 0; i < categories.size(); i++ )
{
QString label = categories[i].label();
QString value = categories[i].value().toString();
if ( label.isEmpty() )
label = value;
mComboBox->addItem( label, value );
}
}
connect( mComboBox, static_cast<void ( QComboBox::* )( int )>( &QComboBox::currentIndexChanged ),
this, static_cast<void ( QgsEditorWidgetWrapper::* )()>( &QgsEditorWidgetWrapper::emitValueChanged ) );
}
}
bool QgsClassificationWidgetWrapper::valid() const
{
return mComboBox;
}
void QgsClassificationWidgetWrapper::setValue( const QVariant &value )
{
mComboBox->setCurrentIndex( mComboBox->findData( value ) );
}