QGIS API Documentation  3.23.0-Master (c716e02dd3)
qgsrangeconfigdlg.cpp
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1 /***************************************************************************
2  qgsrangeconfigdlgbase.cpp
3  --------------------------------------
4  Date : 5.1.2014
5  Copyright : (C) 2014 Matthias Kuhn
6  Email : matthias at opengis dot ch
7  ***************************************************************************
8  * *
9  * This program is free software; you can redistribute it and/or modify *
10  * it under the terms of the GNU General Public License as published by *
11  * the Free Software Foundation; either version 2 of the License, or *
12  * (at your option) any later version. *
13  * *
14  ***************************************************************************/
15 
16 #include "qgsrangeconfigdlg.h"
17 
18 #include "qgsvectorlayer.h"
19 
20 QgsRangeConfigDlg::QgsRangeConfigDlg( QgsVectorLayer *vl, int fieldIdx, QWidget *parent )
21  : QgsEditorConfigWidget( vl, fieldIdx, parent )
22 {
23  setupUi( this );
24  precisionSpinBox->setClearValue( 4 );
25 
26  minimumSpinBox->setMinimum( std::numeric_limits<int>::lowest() );
27  minimumSpinBox->setMaximum( std::numeric_limits<int>::max() );
28  minimumSpinBox->setValue( std::numeric_limits<int>::lowest() );
29 
30  maximumSpinBox->setMinimum( std::numeric_limits<int>::lowest() );
31  maximumSpinBox->setMaximum( std::numeric_limits<int>::max() );
32  maximumSpinBox->setValue( std::numeric_limits<int>::max() );
33 
34  stepSpinBox->setMaximum( std::numeric_limits<int>::max() );
35  stepSpinBox->setValue( 1 );
36  stepSpinBox->setClearValue( 1 );
37 
38  minimumDoubleSpinBox->setMinimum( std::numeric_limits<double>::lowest() );
39  minimumDoubleSpinBox->setMaximum( std::numeric_limits<double>::max() );
40  minimumDoubleSpinBox->setValue( std::numeric_limits<double>::min() );
41 
42  maximumDoubleSpinBox->setMinimum( std::numeric_limits<double>::lowest() );
43  maximumDoubleSpinBox->setMaximum( std::numeric_limits<double>::max() );
44  maximumDoubleSpinBox->setValue( std::numeric_limits<double>::max() );
45 
46  // Use integer here:
47  stepDoubleSpinBox->setMaximum( std::numeric_limits<int>::max() );
48  stepDoubleSpinBox->setValue( 1 );
49  stepDoubleSpinBox->setClearValue( 1 );
50 
51 
52  QString text;
53 
54  const QVariant::Type fieldType( vl->fields().at( fieldIdx ).type() );
55 
56  switch ( fieldType )
57  {
58  case QVariant::Int:
59  case QVariant::LongLong:
60  case QVariant::Double:
61  {
62  // we use the double spin boxes for double OR long long field types, as QSpinBox does not have sufficient
63  // available range for long long values
64  rangeStackedWidget->setCurrentIndex( fieldType == QVariant::Int ? 0 : 1 );
65  if ( fieldType == QVariant::LongLong )
66  {
67  minimumDoubleSpinBox->setDecimals( 0 );
68  maximumDoubleSpinBox->setDecimals( 0 );
69  stepDoubleSpinBox->setDecimals( 0 );
70  }
71 
72  rangeWidget->clear();
73  rangeWidget->addItem( tr( "Editable" ), QStringLiteral( "SpinBox" ) );
74  rangeWidget->addItem( tr( "Slider" ), QStringLiteral( "Slider" ) );
75  rangeWidget->addItem( tr( "Dial" ), QStringLiteral( "Dial" ) );
76 
77  QVariant min;
78  QVariant max;
79  vl->minimumAndMaximumValue( fieldIdx, min, max );
80 
81  text = tr( "Current minimum for this value is %1 and current maximum is %2." ).arg( min.toString(), max.toString() );
82  break;
83  }
84 
85  default:
86  text = tr( "Attribute has no integer or real type, therefore range is not usable." );
87  break;
88  }
89 
90  // Hide precision for integer types
91  if ( fieldType != QVariant::Double )
92  {
93  precisionSpinBox->hide();
94  precisionLabel->hide();
95  }
96 
97  valuesLabel->setText( text );
98 
99  connect( rangeWidget, static_cast<void ( QComboBox::* )( int )>( &QComboBox::currentIndexChanged ), this, &QgsRangeConfigDlg::rangeWidgetChanged );
100  connect( minimumSpinBox, static_cast < void ( QSpinBox::* )( int ) > ( &QSpinBox::valueChanged ), this, &QgsEditorConfigWidget::changed );
101  connect( maximumSpinBox, static_cast < void ( QSpinBox::* )( int ) > ( &QSpinBox::valueChanged ), this, &QgsEditorConfigWidget::changed );
102  connect( stepSpinBox, static_cast < void ( QSpinBox::* )( int ) > ( &QSpinBox::valueChanged ), this, &QgsEditorConfigWidget::changed );
103  connect( minimumDoubleSpinBox, static_cast < void ( QDoubleSpinBox::* )( double ) > ( &QDoubleSpinBox::valueChanged ), this, &QgsEditorConfigWidget::changed );
104  connect( maximumDoubleSpinBox, static_cast < void ( QDoubleSpinBox::* )( double ) > ( &QDoubleSpinBox::valueChanged ), this, &QgsEditorConfigWidget::changed );
105  connect( stepDoubleSpinBox, static_cast < void ( QDoubleSpinBox::* )( double ) > ( &QDoubleSpinBox::valueChanged ), this, &QgsEditorConfigWidget::changed );
106  connect( rangeWidget, static_cast<void ( QComboBox::* )( int )>( &QComboBox::currentIndexChanged ), this, &QgsEditorConfigWidget::changed );
107  connect( allowNullCheckBox, &QAbstractButton::toggled, this, &QgsEditorConfigWidget::changed );
108  connect( suffixLineEdit, &QLineEdit::textChanged, this, &QgsEditorConfigWidget::changed );
109 }
110 
112 {
113  QVariantMap cfg;
114 
115  switch ( layer()->fields().at( field() ).type() )
116  {
117  case QVariant::Int:
118  cfg.insert( QStringLiteral( "Min" ), minimumSpinBox->value() );
119  cfg.insert( QStringLiteral( "Max" ), maximumSpinBox->value() );
120  cfg.insert( QStringLiteral( "Step" ), stepSpinBox->value() );
121  break;
122 
123  // we use the double spin boxes for double OR long long field types, as QSpinBox does not have sufficient
124  // available range for long long values
125  case QVariant::Double:
126  case QVariant::LongLong:
127  cfg.insert( QStringLiteral( "Min" ), minimumDoubleSpinBox->value() );
128  cfg.insert( QStringLiteral( "Max" ), maximumDoubleSpinBox->value() );
129  cfg.insert( QStringLiteral( "Step" ), stepDoubleSpinBox->value() );
130  break;
131 
132  default:
133  break;
134  }
135 
136  cfg.insert( QStringLiteral( "Style" ), rangeWidget->currentData().toString() );
137  cfg.insert( QStringLiteral( "AllowNull" ), allowNullCheckBox->isChecked() );
138  cfg.insert( QStringLiteral( "Precision" ), precisionSpinBox->value() );
139 
140  if ( !suffixLineEdit->text().isEmpty() )
141  {
142  cfg.insert( QStringLiteral( "Suffix" ), suffixLineEdit->text() );
143  }
144 
145  return cfg;
146 }
147 
148 void QgsRangeConfigDlg::setConfig( const QVariantMap &config )
149 {
150  minimumDoubleSpinBox->setValue( config.value( QStringLiteral( "Min" ), std::numeric_limits<double>::lowest() ).toDouble( ) );
151  maximumDoubleSpinBox->setValue( config.value( QStringLiteral( "Max" ), std::numeric_limits<double>::max() ).toDouble( ) );
152  stepDoubleSpinBox->setValue( config.value( QStringLiteral( "Step" ), 1.0 ).toDouble() );
153  minimumSpinBox->setValue( config.value( QStringLiteral( "Min" ), std::numeric_limits<int>::lowest() ).toInt() );
154  maximumSpinBox->setValue( config.value( QStringLiteral( "Max" ), std::numeric_limits<int>::max() ).toInt() );
155  stepSpinBox->setValue( config.value( QStringLiteral( "Step" ), 1 ).toInt() );
156  rangeWidget->setCurrentIndex( rangeWidget->findData( config.value( QStringLiteral( "Style" ), "SpinBox" ) ) );
157  suffixLineEdit->setText( config.value( QStringLiteral( "Suffix" ) ).toString() );
158  allowNullCheckBox->setChecked( config.value( QStringLiteral( "AllowNull" ), true ).toBool() );
159  precisionSpinBox->setValue( config.value( QStringLiteral( "Precision" ), layer()->fields().at( field() ).precision() ).toInt( ) );
160 }
161 
163 {
164  const QString style = rangeWidget->itemData( index ).toString();
165  allowNullCheckBox->setEnabled( style == QLatin1String( "SpinBox" ) );
166 }
This class should be subclassed for every configurable editor widget type.
int field()
Returns the field for which this configuration widget applies.
QgsVectorLayer * layer()
Returns the layer for which this configuration widget applies.
void changed()
Emitted when the configuration of the widget is changed.
QVariant::Type type
Definition: qgsfield.h:58
QgsField at(int i) const
Returns the field at particular index (must be in range 0..N-1).
Definition: qgsfields.cpp:163
QVariantMap config() override
Create a configuration from the current GUI state.
void setConfig(const QVariantMap &config) override
Update the configuration widget to represent the given configuration.
QgsRangeConfigDlg(QgsVectorLayer *vl, int fieldIdx, QWidget *parent)
void rangeWidgetChanged(int index)
Represents a vector layer which manages a vector based data sets.
QgsFields fields() const FINAL
Returns the list of fields of this layer.
void minimumAndMaximumValue(int index, QVariant &minimum, QVariant &maximum) const
Calculates both the minimum and maximum value for an attribute column.
int precision