QGIS API Documentation 3.29.0-Master (19d7edcfed)
qgsmeshstaticdatasetwidget.cpp
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1/***************************************************************************
2 qgsmeshstaticdatasetwidget.cpp
3 -------------------------------------
4 begin : March 2020
5 copyright : (C) 2020 by Vincent Cloarec
6 email : vcloarec at gmail dot com
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
17
18#include "qgsmeshlayer.h"
19
20QgsMeshStaticDatasetWidget::QgsMeshStaticDatasetWidget( QWidget *parent ): QWidget( parent )
21{
22 setupUi( this );
23
24 this->layout()->setContentsMargins( 0, 0, 0, 0 );
25 mDatasetScalarModel = new QgsMeshDatasetListModel( this );
26 mScalarDatasetComboBox->setModel( mDatasetScalarModel );
27 mDatasetVectorModel = new QgsMeshDatasetListModel( this );
28 mVectorDatasetComboBox->setModel( mDatasetVectorModel );
29}
30
32{
33 mLayer = layer;
34}
35
37{
38 if ( !mLayer )
39 return;
40
41 mDatasetScalarModel->setMeshLayer( mLayer );
42 mDatasetVectorModel->setMeshLayer( mLayer );
45}
46
48{
49 if ( !mLayer )
50 return;
51
52 int scalarIndex;
53 // if only one item, there is no active dataset group.
54 // Set to 0 instead of -1 to avoid none dataset (item 0) when the group is reactivate
55 if ( mScalarDatasetComboBox->count() == 1 )
56 scalarIndex = 0;
57 else
58 scalarIndex = mScalarDatasetComboBox->currentIndex() - 1;
59 int vectorIndex;
60 // Same as scalar
61 if ( mVectorDatasetComboBox->count() == 1 )
62 vectorIndex = 0;
63 else
64 vectorIndex = mVectorDatasetComboBox->currentIndex() - 1;
65
66 mLayer->setStaticScalarDatasetIndex( QgsMeshDatasetIndex( mScalarDatasetGroup, scalarIndex ) );
67 mLayer->setStaticVectorDatasetIndex( QgsMeshDatasetIndex( mVectorDatasetGroup, vectorIndex ) );
68}
69
71{
72 mScalarDatasetGroup = index;
73 mDatasetScalarModel->setDatasetGroup( index );
74 mScalarDatasetComboBox->setEnabled( mScalarDatasetGroup >= 0 );
75 if ( mLayer )
76 {
77 mScalarName->setText( mLayer->datasetGroupMetadata( index ).name() );
78 setScalarDatasetIndex( mLayer->staticScalarDatasetIndex().dataset() );
79 }
80}
81
83{
84 mVectorDatasetGroup = index;
85 mDatasetVectorModel->setDatasetGroup( index );
86 mVectorDatasetComboBox->setEnabled( mVectorDatasetGroup >= 0 );
87 if ( mLayer )
88 {
89 mVectorName->setText( mLayer->datasetGroupMetadata( index ).name() );
90 setVectorDatasetIndex( mLayer->staticVectorDatasetIndex().dataset() );
91 }
92}
93
94void QgsMeshStaticDatasetWidget::setScalarDatasetIndex( int index )
95{
96 if ( index < mLayer->datasetCount( mScalarDatasetGroup ) )
97 mScalarDatasetComboBox->setCurrentIndex( index + 1 );
98 else
99 mScalarDatasetComboBox->setCurrentIndex( 0 );
100}
101
102void QgsMeshStaticDatasetWidget::setVectorDatasetIndex( int index )
103{
104 if ( index < mLayer->datasetCount( mVectorDatasetGroup ) )
105 mVectorDatasetComboBox->setCurrentIndex( index + 1 );
106 else
107 mVectorDatasetComboBox->setCurrentIndex( 0 );
108}
109
110QgsMeshDatasetListModel::QgsMeshDatasetListModel( QObject *parent ): QAbstractListModel( parent )
111{}
112
114{
115 beginResetModel();
116 mLayer = layer;
117 endResetModel();
118}
119
121{
122 beginResetModel();
123 mDatasetGroup = group;
124 endResetModel();
125}
126
127int QgsMeshDatasetListModel::rowCount( const QModelIndex &parent ) const
128{
129 Q_UNUSED( parent )
130
131 if ( mLayer )
132 return mLayer->datasetCount( mDatasetGroup ) + 1;
133 else
134 return 0;
135}
136
137QVariant QgsMeshDatasetListModel::data( const QModelIndex &index, int role ) const
138{
139 if ( !index.isValid() )
140 return QVariant();
141
142 if ( role == Qt::DisplayRole )
143 {
144 if ( !mLayer || mDatasetGroup < 0 || index.row() == 0 )
145 return tr( "none" );
146
147 else if ( index.row() == 1 && mLayer->datasetCount( mDatasetGroup ) == 1 )
148 {
149 return tr( "Display dataset" );
150 }
151 else
152 {
153 const QgsInterval time = mLayer->datasetRelativeTime( QgsMeshDatasetIndex( mDatasetGroup, index.row() - 1 ) );
154 return mLayer->formatTime( time.hours() );
155 }
156 }
157
158 return QVariant();
159}
A representation of the interval between two datetime values.
Definition: qgsinterval.h:43
double hours() const
Returns the interval duration in hours.
QString name() const
Returns name of the dataset group.
QgsMeshDatasetIndex is index that identifies the dataset group (e.g.
int dataset() const
Returns a dataset index within group()
List model for dataset contained in dataset group, used to display by time dataset in widget.
void setDatasetGroup(int group)
Sets the dataset group.
void setMeshLayer(QgsMeshLayer *layer)
Sets the layer.
int rowCount(const QModelIndex &parent) const override
QVariant data(const QModelIndex &index, int role) const override
QgsMeshDatasetListModel(QObject *parent)
Constructor.
Represents a mesh layer supporting display of data on structured or unstructured meshes.
Definition: qgsmeshlayer.h:100
int datasetCount(const QgsMeshDatasetIndex &index) const
Returns the dataset count in the dataset groups.
void setStaticVectorDatasetIndex(const QgsMeshDatasetIndex &staticVectorDatasetIndex)
Sets the static vector dataset index that is rendered if the temporal properties is not active.
void setStaticScalarDatasetIndex(const QgsMeshDatasetIndex &staticScalarDatasetIndex)
Sets the static scalar dataset index that is rendered if the temporal properties is not active.
QgsMeshRendererSettings rendererSettings() const
Returns renderer settings.
QgsMeshDatasetIndex staticVectorDatasetIndex() const
Returns the static vector dataset index that is rendered if the temporal properties is not active.
QgsMeshDatasetIndex staticScalarDatasetIndex() const
Returns the static scalar dataset index that is rendered if the temporal properties is not active.
QgsInterval datasetRelativeTime(const QgsMeshDatasetIndex &index)
Returns the relative time of the dataset from the reference time of its group.
QString formatTime(double hours)
Returns (date) time in hours formatted to human readable form.
QgsMeshDatasetGroupMetadata datasetGroupMetadata(const QgsMeshDatasetIndex &index) const
Returns the dataset groups metadata.
int activeVectorDatasetGroup() const
Returns the active vector dataset group.
int activeScalarDatasetGroup() const
Returns the active scalar dataset group.
QgsMeshStaticDatasetWidget(QWidget *parent=nullptr)
Constructor.
void apply()
Applies the settings made in the widget.
void syncToLayer()
Synchronizes widgets state with associated mesh layer.
void setScalarDatasetGroup(int index)
Sets the scalar dataset group.
void setLayer(QgsMeshLayer *layer)
Sets the layer.
void setVectorDatasetGroup(int index)
Sets the vector dataset group.