QGIS API Documentation 3.40.0-Bratislava (b56115d8743)
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qgsmeshdatasetgrouptreewidget.cpp
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1/***************************************************************************
2 qgsmeshdatasetgrouptreewidget.cpp
3 -------------------------------
4 begin : May 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 <QFileDialog>
19#include <QMessageBox>
20
22#include "qgsmeshlayer.h"
24#include "qgsproject.h"
26#include "qgsproviderregistry.h"
27#include "qgssettings.h"
28
29
31 QWidget( parent )
32{
33 setupUi( this );
34
35 connect( mAddDatasetButton, &QToolButton::clicked, this, &QgsMeshDatasetGroupTreeWidget::addDataset );
36 connect( mCollapseButton, &QToolButton::clicked, mDatasetGroupTreeView, &QTreeView::collapseAll );
37 connect( mExpandButton, &QToolButton::clicked, mDatasetGroupTreeView, &QTreeView::expandAll );
38 connect( mCheckAllButton, &QToolButton::clicked, mDatasetGroupTreeView, &QgsMeshDatasetGroupTreeView::selectAllGroups );
39 connect( mUnCheckAllButton, &QToolButton::clicked, mDatasetGroupTreeView, &QgsMeshDatasetGroupTreeView::deselectAllGroups );
40 connect( mResetDefaultButton, &QToolButton::clicked, this, [this]
41 {
42 this->mDatasetGroupTreeView->resetDefault( this->mMeshLayer );
43 } );
44
45 connect( mDatasetGroupTreeView, &QgsMeshDatasetGroupTreeView::apply, this, &QgsMeshDatasetGroupTreeWidget::apply );
46}
47
49{
50 mMeshLayer = meshLayer;
51 mDatasetGroupTreeView->syncToLayer( meshLayer );
52}
53
55{
56 if ( mMeshLayer )
57 mMeshLayer->setDatasetGroupTreeRootItem( mDatasetGroupTreeView->datasetGroupTreeRootItem() );
58}
59
60void QgsMeshDatasetGroupTreeWidget::addDataset()
61{
62 if ( !mMeshLayer->dataProvider() )
63 return;
64
65 QgsSettings settings;
66 const QString openFileDir = settings.value( QStringLiteral( "lastMeshDatasetDir" ), QDir::homePath(), QgsSettings::App ).toString();
67 const QString openFileString = QFileDialog::getOpenFileName( nullptr,
68 tr( "Load mesh datasets" ),
69 openFileDir,
70 QgsProviderRegistry::instance()->fileMeshDatasetFilters() );
71
72 if ( openFileString.isEmpty() )
73 {
74 return; // canceled by the user
75 }
76
77 const QFileInfo openFileInfo( openFileString );
78 settings.setValue( QStringLiteral( "lastMeshDatasetDir" ), openFileInfo.absolutePath(), QgsSettings::App );
79 const QFile datasetFile( openFileString );
80
81 if ( mMeshLayer->addDatasets( openFileString, QgsProject::instance()->timeSettings()->temporalRange().begin() ) )
82 {
83 QMessageBox::information( this, tr( "Load mesh datasets" ), tr( "Datasets successfully added to the mesh layer" ) );
84 emit datasetGroupAdded();
85 }
86 else
87 {
88 QMessageBox::warning( this, tr( "Load mesh datasets" ), tr( "Could not read mesh dataset." ) );
89 }
90}
void apply()
Apply the dataset group tree item to the layer.
QgsMeshDatasetGroupTreeWidget(QWidget *parent=nullptr)
Constructor.
void syncToLayer(QgsMeshLayer *meshLayer)
Synchronizes widgets state with associated mesh layer.
Represents a mesh layer supporting display of data on structured or unstructured meshes.
bool addDatasets(const QString &path, const QDateTime &defaultReferenceTime=QDateTime())
Adds datasets to the mesh from file with path.
void setDatasetGroupTreeRootItem(QgsMeshDatasetGroupTreeItem *rootItem)
Sets the root items of the dataset group tree item.
QgsMeshDataProvider * dataProvider() override
Returns the layer's data provider, it may be nullptr.
QgsDateTimeRange temporalRange() const
Returns the project's temporal range, which indicates the earliest and latest datetime ranges associa...
static QgsProject * instance()
Returns the QgsProject singleton instance.
const QgsProjectTimeSettings * timeSettings() const
Returns the project's time settings, which contains the project's temporal range and other time based...
static QgsProviderRegistry * instance(const QString &pluginPath=QString())
Means of accessing canonical single instance.
This class is a composition of two QSettings instances:
Definition qgssettings.h:64
QVariant value(const QString &key, const QVariant &defaultValue=QVariant(), Section section=NoSection) const
Returns the value for setting key.
void setValue(const QString &key, const QVariant &value, QgsSettings::Section section=QgsSettings::NoSection)
Sets the value of setting key to value.
T begin() const
Returns the beginning of the range.
Definition qgsrange.h:444