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QGISVisualizationWidget.cpp
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QGISVisualizationWidget.cpp
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/* *****************************************************************************
Copyright (c) 2016-2021, The Regents of the University of California (Regents).
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
The views and conclusions contained in the software and documentation are those
of the authors and should not be interpreted as representing official policies,
either expressed or implied, of the FreeBSD Project.
REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED HEREUNDER IS
PROVIDED "AS IS". REGENTS HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT,
UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*************************************************************************** */
// Written by: Stevan Gavrilovic
#include "QGISVisualizationWidget.h"
#include "PopUpWidget.h"
#include "SimCenterMapcanvasWidget.h"
#include "GISSelectable.h"
// Test to delete
//#include "RectangleGrid.h"
//#include "NodeHandle.h"
// Test to delete end
#include <qgsuserprofilemanager.h>
#include <qgslayertreeutils.h>
#include <qgslayertreeview.h>
#include <qgisapp.h>
#include <qgsmaplayer.h>
#include <qgslayertree.h>
#include <qgslayertreemodel.h>
#include <qgslayertreenode.h>
#include <qgslayertreegroup.h>
#include <qgslayertreeviewdefaultactions.h>
#include <qgsmapcanvas.h>
#include <qgsrubberband.h>
#include <qgsvertexmarker.h>
#include <qgslayertreemapcanvasbridge.h>
#include <qgsmaptooladdfeature.h>
#include <qgsmapcanvas.h>
#include <qgsfield.h>
#include <qgsvectorlayer.h>
#include <qgscategorizedsymbolrenderer.h>
#include <qgsmarkersymbol.h>
#include <qgsfillsymbol.h>
#include <qgslinesymbol.h>
#include <qgscolorramp.h>
#include <qgscolorrampimpl.h>
#include <qgsexpressioncontextutils.h>
#include <qgsrulebasedrenderer.h>
#include <qgsclassificationmethod.h>
#include <qgssymbollayerutils.h>
#include <qgsrendererrange.h>
#include <qgsgraduatedsymbolrenderer.h>
#include <qgsclassificationmethodregistry.h>
#include <qgsapplication.h>
#include <qgssinglesymbolrenderer.h>
#include <qgslayertreenode.h>
#include <qgssinglesymbolrenderer.h>
#include <qgsrasterlayer.h>
#include <qgsrasterdataprovider.h>
#include "qgsfillsymbollayer.h"
#include "qgsproviderregistry.h"
#include "qgsprovidersublayerdetails.h"
#include <qgscoordinatetransform.h>
#include <qgssinglesymbolrenderer.h>
#include <QStandardPaths>
#include <QSplitter>
QGISVisualizationWidget::QGISVisualizationWidget(QMainWindow *parent) : VisualizationWidget(parent)
{
QSplitter* mainWidget = new QSplitter(this);
mainWidget->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding);
QVBoxLayout *mainLayout = new QVBoxLayout(this);
mainLayout->setMargin(0);
mainLayout->addWidget(mainWidget);
bool mySkipVersionCheck = true;
bool myRestorePlugins = true;
auto profileName = QLatin1String( "default" );
auto configLocalStorageLocation = QStandardPaths::standardLocations( QStandardPaths::AppDataLocation ).value( 0 );
QString rootProfileFolder = QgsUserProfileManager::resolveProfilesFolder( configLocalStorageLocation );
qgis = new QgisApp(parent, myRestorePlugins, mySkipVersionCheck, rootProfileFolder, profileName, nullptr, Qt::Widget);
qgis->setObjectName( QStringLiteral( "QgisApp" ) );
qgis->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding);
// QThread *thread = new QThread();
// qgis->moveToThread(thread);
// QWidget::connect(thread, SIGNAL(finished()), qgis, SLOT(deleteLater()));
// thread->start();
layerTreeView = qgis->layerTreeView();
qgis->mapCanvas()->setCenter(QgsPointXY(37.8717450069,-122.2609607382));
//#ifdef OpenSRA
// auto crs = QgsCoordinateReferenceSystem(QStringLiteral("EPSG:4326"));
//#else
auto crs = QgsCoordinateReferenceSystem(QStringLiteral("EPSG:3857"));
//#endif
qgis->mapCanvas()->setDestinationCrs(crs);
auto leftHandWidget = new QWidget();
leftHandWidget->setContentsMargins(0,0,0,0);
QVBoxLayout* leftHandLayout = new QVBoxLayout(leftHandWidget);
leftHandLayout->setMargin(0);
QLabel* basemapText = new QLabel(this);
basemapText->setText("Add a basemap:");
baseMapCombo = new QComboBox();
baseMapCombo->addItem("OpenStreetMap");
baseMapCombo->addItem("OpenStreetMap Topo");
baseMapCombo->addItem("Google Satellite");
baseMapCombo->addItem("Google Road");
baseMapCombo->addItem("Google Road & Satellite");
baseMapCombo->addItem("Bing Aerial");
baseMapCombo->addItem("Stamen Toner Lite");
baseMapCombo->addItem("ESRI World Topo");
connect(baseMapCombo, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &QGISVisualizationWidget::handleBasemapSelection);
QPushButton *identifyAssets = new QPushButton("Identify",this);
connect(identifyAssets,&QPushButton::pressed,this,&QGISVisualizationWidget::handleIdentifyButton);
QPushButton *selectAssets = new QPushButton("Select",this);
connect(selectAssets,&QPushButton::pressed,this,&QGISVisualizationWidget::handleSelectButton);
auto lhbLayout = new QHBoxLayout();
lhbLayout->addWidget(identifyAssets);
lhbLayout->addWidget(selectAssets);
QLabel* topText = new QLabel(this);
topText->setText("Add selected assets to analysis list");
topText->setStyleSheet("font-weight: bold; color: black; text-align: center");
QPushButton *addAssetsButton = new QPushButton(this);
addAssetsButton->setText(tr("Add Assets"));
// addAssetsButton->setMaximumWidth(150);
QLabel* bottomText = new QLabel(this);
bottomText->setText("Clear all selected assets");
bottomText->setStyleSheet("font-weight: bold; color: black; text-align: center");
QPushButton *clearButton = new QPushButton(this);
clearButton->setText(tr("Clear"));
// clearButton->setMaximumWidth(150);
connect(addAssetsButton,&QPushButton::clicked,this,&QGISVisualizationWidget::handleSelectAssetsMap);
connect(clearButton,&QPushButton::clicked,this,&QGISVisualizationWidget::handleClearAssetsMap);
leftHandLayout->addWidget(basemapText);
leftHandLayout->addWidget(baseMapCombo);
leftHandLayout->addWidget(layerTreeView);
leftHandLayout->addLayout(lhbLayout);
leftHandLayout->addWidget(topText);
leftHandLayout->addWidget(addAssetsButton);
leftHandLayout->addWidget(clearButton);
leftHandLayout->addWidget(bottomText);
leftHandLayout->addWidget(clearButton);
mainWidget->addWidget(leftHandWidget);
mainWidget->addWidget(qgis);
this->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding);
#ifdef OpenSRA
baseMapCombo->setCurrentIndex(7);
#else
baseMapCombo->setCurrentIndex(0);
handleBasemapSelection(0);
#endif
// Set the map tool to select
handleClearAssetsMap();
// Now add the splitter handle
// Note: index 0 handle is always hidden, index 1 is between the two widgets
QSplitterHandle *handle = mainWidget->handle(1);
if(handle == nullptr)
{
qDebug()<<"Error getting the handle";
return;
}
auto buttonHandle = new QToolButton(handle);
QVBoxLayout *layout = new QVBoxLayout(handle);
layout->setSpacing(0);
layout->setMargin(0);
mainWidget->setHandleWidth(15);
buttonHandle->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding);
buttonHandle->setDown(false);
buttonHandle->setAutoRaise(false);
buttonHandle->setCheckable(false);
buttonHandle->setArrowType(Qt::RightArrow);
buttonHandle->setStyleSheet("QToolButton{border:0px solid}; QToolButton:pressed {border:0px solid}");
buttonHandle->setIconSize(buttonHandle->size());
layout->addWidget(buttonHandle);
// testVectorLayer();
// testNewMapCanvas();
// testNewMapCanvas2();
}
QGISVisualizationWidget::~QGISVisualizationWidget()
{
// QgsApplication::exitQgis(); To do... call this last so it does not cause a crash
}
SimCenterMapcanvasWidget* QGISVisualizationWidget::getMapViewWidget(const QString& name)
{
SimCenterMapcanvasWidget* mapCanvasWidget = new SimCenterMapcanvasWidget(name, this);
QgsMapCanvas *mapCanvas = mapCanvasWidget->mapCanvas();
mapCanvas->freeze( true );
mapCanvas->setObjectName( name );
mapCanvas->setProject(QgsProject::instance());
connect(qgis->layerTreeCanvasBridge(), &QgsLayerTreeMapCanvasBridge::canvasLayersChanged, mapCanvas, &QgsMapCanvas::setLayers );
mapCanvas->setCanvasColor( QgsProject::instance()->backgroundColor() );
mapCanvas->setSelectionColor( QgsProject::instance()->selectionColor() );
QgsSettings settings;
mapCanvas->enableAntiAliasing( settings.value( QStringLiteral( "qgis/enable_anti_aliasing" ), true ).toBool() );
double zoomFactor = settings.value( QStringLiteral( "qgis/zoom_factor" ), 1.5 ).toDouble();
mapCanvas->setWheelFactor( zoomFactor );
mapCanvas->setCachingEnabled( settings.value( QStringLiteral( "qgis/enable_render_caching" ), true ).toBool() );
mapCanvas->setParallelRenderingEnabled( settings.value( QStringLiteral( "qgis/parallel_rendering" ), true ).toBool() );
mapCanvas->setMapUpdateInterval( settings.value( QStringLiteral( "qgis/map_update_interval" ), 125 ).toInt() );
mapCanvas->setSegmentationTolerance( settings.value( QStringLiteral( "qgis/segmentationTolerance" ), "0.01745" ).toDouble() );
mapCanvas->setSegmentationToleranceType( QgsAbstractGeometry::SegmentationToleranceType( settings.enumValue( QStringLiteral( "qgis/segmentationToleranceType" ), QgsAbstractGeometry::MaximumAngle ) ) );
// // add existing annotations to canvas
// const auto constAnnotations = QgsProject::instance()->annotationManager()->annotations();
// for ( QgsAnnotation *annotation : constAnnotations )
// {
// QgsMapCanvasAnnotationItem *canvasItem = new QgsMapCanvasAnnotationItem( annotation, mapCanvas );
// Q_UNUSED( canvasItem ) //item is already added automatically to canvas scene
// }
qgis->markDirty();
// connect( mapCanvasWidget, &QWidget::close, qgis, &QgisApp::markDirty );
mapCanvas->setInteractive(true);
mapCanvas->setLayers( qgis->mapCanvas()->layers() );
mapCanvas->setExtent( qgis->mapCanvas()->extent() );
QgsDebugMsgLevel( QStringLiteral( "QgisApp::createNewMapCanvas -2- : QgsProject::instance()->crs().description[%1]ellipsoid[%2]" ).arg( QgsProject::instance()->crs().description(), QgsProject::instance()->crs().ellipsoidAcronym() ), 3 );
// mapCanvas->setDestinationCrs( QgsProject::instance()->crs() );
//#ifdef OpenSRA
// mapCanvas->setDestinationCrs(QgsCoordinateReferenceSystem(QStringLiteral("EPSG:4326")));
//#else
mapCanvas->setDestinationCrs(QgsCoordinateReferenceSystem(QStringLiteral("EPSG:3857")));
//#endif
mapCanvas->freeze(false);
return mapCanvasWidget;
}
void QGISVisualizationWidget::testNewMapCanvas2()
{
auto mapCanvas = qgis->createNewMapCanvas("Test2");
QWidget* testWidget = new QWidget();
QVBoxLayout* newBoxLayout = new QVBoxLayout(testWidget);
newBoxLayout->addWidget(mapCanvas);
testWidget->show();
mapCanvas->zoomToFullExtent();
}
void QGISVisualizationWidget::markDirty()
{
qgis->markDirty();
qgis->refreshMapCanvas(true);
}
void QGISVisualizationWidget::turnOnSelectionTool()
{
qgis->selectFeatures();
}
void QGISVisualizationWidget::zoomToExtent(QgsRectangle zoomRectangle)
{
auto mapCanvas = qgis->mapCanvas();
mapCanvas->setExtent(zoomRectangle);
mapCanvas->refresh();
}
void QGISVisualizationWidget::zoomToActiveLayer(void)
{
auto mapCanvas = qgis->mapCanvas();
QgsMapLayer* activeLayer = mapCanvas->currentLayer();
QgsRectangle extent = activeLayer->extent();
QgsCoordinateReferenceSystem srcCrs("EPSG:4326");
QgsCoordinateReferenceSystem destCrs("EPSG:3857");
// Create a coordinate transform object
QgsCoordinateTransform transform(srcCrs, destCrs, QgsProject::instance());
// Transform the extent from EPSG 4326 to EPSG 3857
QgsRectangle extent3857 = transform.transform(extent);
mapCanvas->setExtent(extent3857);
mapCanvas->refresh();
}
void QGISVisualizationWidget::setActiveLayerFillNull(void)
{
auto mapCanvas = qgis->mapCanvas();
QgsMapLayer* activeLayer = mapCanvas->currentLayer();
QgsVectorLayer* vectorLayer = dynamic_cast<QgsVectorLayer*>(activeLayer);
QgsSymbol* symbol = nullptr;
//auto geomType = vectorLayer->geometryType();
QgsSimpleFillSymbolLayer* fillLayer = new QgsSimpleFillSymbolLayer();
fillLayer->setStrokeColor(Qt::red);
fillLayer->setFillColor(QColor(0, 0, 0, 0));
fillLayer->setStrokeWidth(1);
symbol = new QgsFillSymbol();
symbol->deleteSymbolLayer(0);
symbol->appendSymbolLayer(fillLayer->clone());
QgsSingleSymbolRenderer* renderer = new QgsSingleSymbolRenderer(symbol);
vectorLayer->setRenderer(renderer);
vectorLayer->triggerRepaint();
}
SimCenterMapcanvasWidget* QGISVisualizationWidget::testNewMapCanvas()
{
auto mapCanvasWidget = this->getMapViewWidget("Test");
mapCanvasWidget->setWindowFlag(Qt::Window);
// auto mapCanvas = mapCanvasWidget->mapCanvas();
mapCanvasWidget->show();
// QGraphicsScene* scene = mapCanvas->scene();
// auto grid = new RectangleGrid(mapCanvas);
// auto sceneRect = scene->sceneRect();
// auto centerScene = sceneRect.center();
// auto sceneWidth = sceneRect.width();
// auto sceneHeight = sceneRect.height();
// // Set the initial grid size if it has not already been set
// if(grid->getBottomLeftNode()->pos().isNull() || grid->getTopRightNode()->pos().isNull() || grid->getTopLeftNode()->pos().isNull() || grid->getBottomRightNode()->pos().isNull() )
// {
// grid->setWidth(0.5*sceneWidth);
// grid->setHeight(0.5*sceneHeight);
// grid->setPos(centerScene.toPoint());
// scene->addItem(grid);
// }
// grid->show();
// mapCanvasWidget->mapCanvas()->zoomToFullExtent();
return mapCanvasWidget;
}
void QGISVisualizationWidget::handleBasemapSelection(int index)
{
QString uri;
QString baseName;
QString key;
if(index == 0)
{
uri = "tilePixelRatio=2&type=xyz&url=http://tile.openstreetmap.org/%7Bz%7D/%7Bx%7D/%7By%7D.png&zmax=19&zmin=0";
baseName = "Open Street Map";
key = "wms";
}
else if(index == 1)
{
uri = "tilePixelRatio=2&type=xyz&url=http://tile.opentopomap.org/%7Bz%7D/%7Bx%7D/%7By%7D.png&zmax=19&zmin=0";
baseName = "Open Street Map Topo";
key = "wms";
}
else if(index == 2)
{
uri = "tilePixelRatio=2&type=xyz&url=https://mt1.google.com/vt/lyrs%3Ds%26x%3D%7Bx%7D%26y%3D%7By%7D%26z%3D%7Bz%7D&zmax=19&zmin=0";
baseName = "Google Satellite";
key = "wms";
}
else if(index == 3)
{
uri = "tilePixelRatio=2&type=xyz&url=https://mt1.google.com/vt/lyrs%3Dm%26x%3D%7Bx%7D%26y%3D%7By%7D%26z%3D%7Bz%7D&zmax=19&zmin=0";
baseName = "Google Road";
key = "wms";
}
else if(index == 4)
{
uri = "tilePixelRatio=2&type=xyz&url=https://mt1.google.com/vt/lyrs%3Dy%26x%3D%7Bx%7D%26y%3D%7By%7D%26z%3D%7Bz%7D&zmax=19&zmin=0";
baseName = "Google Road and Satellite";
key = "wms";
}
else if(index == 5)
{
uri = "tilePixelRatio=2&type=xyz&url=http://ecn.t3.tiles.virtualearth.net/tiles/a%7Bq%7D.jpeg?g%3D1&zmax=18&zmin=0";
baseName = "Bing Aerial";
key = "wms";
}
else if(index == 6)
{
uri = "tilePixelRatio=2&type=xyz&url=https://stamen-tiles.a.ssl.fastly.net/toner-lite/%7Bz%7D/%7Bx%7D/%7By%7D.png&zmax=20&zmin=0";
baseName = "Stamen Toner Lite";
key = "wms";
}
else if(index == 7)
{
uri = "tilePixelRatio=2&type=xyz&url=https://services.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer/tile/%7Bz%7D/%7By%7D/%7Bx%7D&zmax=20&zmin=0";
baseName = "ESRI World Topo";
key = "wms";
}
else
{
uri = QString();
baseName = QString();
key = QString();
}
if(baseName.isEmpty() || uri.isEmpty() || key.isEmpty())
{
this->errorMessage("Error setting basemap layer");
return;
}
if(baseMapLayer)
{
if(baseMapLayer->name() == baseName)
return;
QgsMapLayer::LayerFlags flags = baseMapLayer->flags();
flags |= QgsMapLayer::Removable;
baseMapLayer->setFlags( flags );
this->removeLayer(baseMapLayer);
}
QgsMapLayer* newBaseMapLayer = qgis->addRasterLayer(uri,baseName,key);
if (newBaseMapLayer == nullptr)
{
this->errorMessage("Error setting basemap layer");
return;
}
moveLayerToBottom(newBaseMapLayer->id());
baseMapLayer = newBaseMapLayer ;
// Make the basemap non-removable so that it does not get deleted when the project is cleared
QgsMapLayer::LayerFlags flags = baseMapLayer->flags();
// flags |= QgsMapLayer::Identifiable; // yes flag
// flags &= ~QgsMapLayer::Identifiable; // no flag
// flags |= QgsMapLayer::Removable;
flags &= ~QgsMapLayer::Removable;
// flags |= QgsMapLayer::Searchable;
// flags &= ~QgsMapLayer::Searchable;
// flags |= QgsMapLayer::Private;
// flags &= ~QgsMapLayer::Private;
baseMapLayer->setFlags( flags );
//#ifdef OpenSRA
// auto crs = QgsCoordinateReferenceSystem(QStringLiteral("EPSG:4326"));
//#else
auto crs = QgsCoordinateReferenceSystem(QStringLiteral("EPSG:3857"));
//#endif
baseMapLayer->setCrs(crs);
}
void QGISVisualizationWidget::handleSelectAssetsMap(void)
{
auto mapCanvas = qgis->mapCanvas();
auto layers = mapCanvas->layers();
for(auto&& layer : layers)
{
auto currVecLayer = static_cast<QgsVectorLayer*>(layer);
if(currVecLayer == nullptr)
continue;
auto layerId = layer->id();
auto selectWidget = mapSelectableAssetWidgets.value(layerId,nullptr);
if(selectWidget == nullptr)
continue;
QgsFeatureIds selectedAssets = currVecLayer->selectedFeatureIds();
if(selectedAssets.isEmpty())
continue;
selectWidget->insertSelectedAssets(selectedAssets);
}
qgis->deselectAll();
}
void QGISVisualizationWidget::handleClearAssetsMap(void)
{
// Iterate through the map and clear all selected assets
QMapIterator<QString,GISSelectable*> it(mapSelectableAssetWidgets);
while (it.hasNext()) {
it.next();
it.value()->clearSelectedAssets();
}
}
QgsRasterLayer* QGISVisualizationWidget::addRasterLayer(const QString &layerPath, const QString &name, const QString &providerKey)
{
this->deselectAllTreeItems();
auto layer = qgis->addRasterLayer(layerPath, name, providerKey);
if(layer != nullptr)
layer->setCrs(QgsCoordinateReferenceSystem("EPSG:4326"));
return layer;
}
void QGISVisualizationWidget::moveLayerToBottom(const QString& layerID)
{
auto root = QgsProject::instance()->layerTreeRoot();
QgsLayerTreeLayer* myExistingLayer = root->findLayer(layerID);
if(myExistingLayer==nullptr)
return;
auto myClone = myExistingLayer->clone();
root->addChildNode(myClone);
auto parent = myExistingLayer->parent();
parent->takeChild(myExistingLayer);
}
QgsVectorLayer* QGISVisualizationWidget::addVectorLayer(const QString &layerPath, const QString &name, const QString &providerKey)
{
this->deselectAllTreeItems();
auto layer = qgis->addVectorLayer(layerPath, name, providerKey);
if(layer != nullptr)
layer->setCrs(QgsCoordinateReferenceSystem("EPSG:4326"));
return layer;
}
QgsVectorLayer* QGISVisualizationWidget::duplicateExistingLayer(QgsVectorLayer* layer)
{
if(layer == nullptr)
{
this->errorMessage("nullptr came into function");
return nullptr;
}
// Get the layer type
QString layerType;
auto geomType = layer->geometryType();
if(geomType == QgsWkbTypes::PolygonGeometry)
layerType = "polygon";
else if (geomType == QgsWkbTypes::PointGeometry)
layerType = "point";
else if (geomType == QgsWkbTypes::LineGeometry)
layerType = "linestring";
else
{
this->errorMessage("Could not parse the layer type for layer "+layer->name());
return nullptr;
}
QgsVectorLayer* dupLayer = this->addVectorLayer(layerType,"All Pipelines");
if (dupLayer == nullptr)
{
this->errorMessage("Error copying the layer "+layer->name() + " could not create a layer in the memory");
return nullptr;
}
auto pr = dupLayer->dataProvider();
dupLayer->startEditing();
auto res = pr->addAttributes(layer->fields().toList());
if(!res)
{
this->errorMessage("Error adding attributes to the duplicate layer " + dupLayer->name() + ". Error copying the layer "+layer->name());
return nullptr;
}
dupLayer->updateFields(); // tell the vector layer to fetch changes from the provider
// Check if the layer is created, but perhaps not valid
if (!dupLayer->isValid())
{
this->errorMessage("Error copying the layer "+layer->name()+" duplicate layer is not valid");
return nullptr;
}
// Set the crs of the duplicated layer to the crs of the original layer
dupLayer->setCrs(layer->crs());
auto layerDupName = layer->name() + ' ' + "copy";
dupLayer->setName(layerDupName);
// There could be a better approach to do this... perform a deep copy of the features for now
QgsFeatureIterator featIt = layer->getFeatures();
QList<QgsFeature> featureList;
QgsFeature feat;
while (featIt.nextFeature(feat))
{
auto newFeat = QgsFeature(feat); // Use the feature copy constructor
// Do a deep clone of the geometry
newFeat.setGeometry(QgsGeometry(feat.geometry().get()->clone()));
featureList.append(newFeat);
}
// Start editing on the layer
dupLayer->startEditing();
dupLayer->dataProvider()->addFeatures(featureList);
dupLayer->commitChanges(true);
dupLayer->updateExtents();
this->addMapLayer(dupLayer);
return dupLayer;
}
void QGISVisualizationWidget::addMapLayer(QgsMapLayer* layer)
{
qgis->addMapLayer(layer);
}
void QGISVisualizationWidget::testVectorLayer()
{
// QgsVectorLayer( const QString &path = QString(), const QString &baseName = QString(), const QString &providerLib = "ogr", const QgsVectorLayer::LayerOptions &options = QgsVectorLayer::LayerOptions() );
auto vl = this->addVectorLayer("Point", "Feature Layer");
auto vl2 = this->addVectorLayer("Point", "Feature Layer2");
connect(vl,&QgsVectorLayer::selectionChanged,this, &QGISVisualizationWidget::selectionChanged);
auto pr = vl->dataProvider();
auto pr2 = vl2->dataProvider();
// add fields
QList<QgsField> attrib = {QgsField("name", QVariant::String),
QgsField("age", QVariant::Int),
QgsField("size", QVariant::Double),
QgsField("repairRatio", QVariant::Double)};
QVector<QString> buildTypes = {"Res 1", "Res 2", "Comm 1", "Comm 2", "Ind 1", "Ind 2"};
auto res = pr->addAttributes(attrib);
if(!res)
qDebug()<<"Error adding attributes";
pr2->addAttributes(attrib);
vl->updateFields(); // tell the vector layer to fetch changes from the provider
vl2->updateFields(); // tell the vector layer to fetch changes from the provider
int numFeat = 1000;
QgsFeatureList featList;
QgsFeatureList featList2;
int numTypes = buildTypes.size()-1;
auto minX = -120;
auto minY = 30;
float maxD = 5.5;
float minD = 3.2;
for(int i = 0; i < numFeat; ++i)
{
auto x = minX + minD + static_cast <float> (rand()) / ( static_cast <float> (RAND_MAX/(maxD-minD)));
auto y = minY + minD + static_cast <float> (rand()) / ( static_cast <float> (RAND_MAX/(maxD-minD)));
// add a feature
QgsFeature feature;
feature.setGeometry(QgsGeometry::fromPointXY(QgsPointXY(x,y)));
QgsAttributes featAttrb(attrib.size());
featAttrb[0] = QVariant(buildTypes[(rand() % numTypes) + 1]);
featAttrb[1] = QVariant(2);
featAttrb[2] = QVariant(0.3);
featAttrb[3] = QVariant((double) rand()/RAND_MAX);
feature.setAttributes(featAttrb);
if(i%2 == 0)
featList.append(feature);
else
featList2.append(feature);
}
pr->addFeatures(featList);
pr2->addFeatures(featList2);
vl->updateExtents();
vl2->updateExtents();
// createPrettyGraduatedRenderer("repairRatio",Qt::yellow, Qt::red,5,vl);
// createCategoryRenderer("name",vl);
QVector<QPair<double,double>> classBreaks;
classBreaks.append(QPair<double,double>(0.0,0.4));
classBreaks.append(QPair<double,double>(0.4,0.6));
classBreaks.append(QPair<double,double>(0.6,0.8));
classBreaks.append(QPair<double,double>(0.8,1.0));
QVector<QColor> colors;
colors.push_back(Qt::black);
colors.push_back(Qt::blue);
colors.push_back(Qt::green);
colors.push_back(Qt::red);
createCustomClassBreakRenderer("repairRatio",vl,Qgis::SymbolType::Marker,classBreaks,colors);
createCustomClassBreakRenderer("repairRatio",vl2,Qgis::SymbolType::Marker,classBreaks,colors);
QVector<QgsMapLayer*> vecLayers= {vl,vl2};
this->createLayerGroup(vecLayers, "Test layer group");
}
void QGISVisualizationWidget::selectLayersInTree(const QVector<QgsMapLayer*>& layers)
{
// First get all of the indexes
QVector<QModelIndex> vecIndexes;
vecIndexes.reserve(layers.size());
for(auto&& it: layers)
{
auto index = this->getLayerIndex(it);
if(!index.isValid())
this->errorMessage("Invalid index in select layers");
vecIndexes.push_back(index);
}
// Then do the selection
auto selectModel = layerTreeView->selectionModel();
for(auto&& it : vecIndexes)
{
selectModel->select(it , QItemSelectionModel::Select);
}
}
QgsLayerTreeGroup* QGISVisualizationWidget::createLayerGroup(const QVector<QgsMapLayer*>& layers, const QString groupName)
{
if(layers.size() < 2)
{
this->errorMessage("Two or more layers are required to create a group");
return nullptr;
}
this->deselectAllTreeItems();
// First select the layers
this->selectLayersInTree(layers);
if(layerTreeView->selectedLayers().empty())
{
this->errorMessage("Layer selection failed in create group");
return nullptr;
}
// Add the group
layerTreeView->defaultActions()->addGroup();
// Rename the group
auto group = layerTreeView->currentGroupNode();
if(group != nullptr)
{
group->setName(groupName);
group->setExpanded(false);
}
else
this->errorMessage("Failed to create a group layer");
// Clear the selection otherwise future layers added to the map will automatically be part of the group
this->deselectAllTreeItems();
return group;
}
QgsLayerTreeGroup* QGISVisualizationWidget::getLayerGroup(const QString groupName)
{
// Get the root group
QgsLayerTreeGroup *rootGroup = layerTreeView->layerTreeModel()->rootGroup();
// Find group node with specified name. Searches recursively the whole sub-tree. - will return nullptr if not found!
auto grp = rootGroup->findGroup(groupName);
return grp;
}
void QGISVisualizationWidget::removeLayerGroup(const QString& name)
{
// Get the layer group
auto lyrGroup = this->getLayerGroup(name);
if(!lyrGroup)
{
this->errorMessage("Error deleting the layer group. "+name+" Could not find the layer group.");
return;
}
// Get the layers recursively
auto layerList = lyrGroup->findLayers();
// When all layers are removed from the group the group will disappear
for(auto&& it : layerList)
this->removeLayer(it->layer());
}
void QGISVisualizationWidget::deselectAllTreeItems(void)
{
layerTreeView->setCurrentLayer(nullptr);
}
void QGISVisualizationWidget::showFeaturePopUp(QgsFeatureIterator& features)
{
if(!features.isValid())
return;
std::unique_ptr<PopUpWidget> popUp = std::make_unique<PopUpWidget>(this);
QgsFeature feat;
while (features.nextFeature(feat))
{
auto fields = feat.fields();
auto attributes = feat.attributes();
if(fields.size() != attributes.size())
{
this->errorMessage("Error getting the fields and attributes in information popup");
return;
}
QStringList attrbKeyList;
QStringList attrbValList;
for(int i = 0; i<attributes.size(); ++i)
{
auto atrb = attributes.at(i).toString();
auto field = fields.at(i).name();
// Do not list empty attributes in the popup
if(atrb.isEmpty())
continue;
if(QString::compare(atrb,"ObjectID") == 0 || QString::compare(atrb,"AssetType") == 0 || QString::compare(atrb,"TabName") == 0)
continue;
attrbKeyList.append(field);
attrbValList.append(atrb);
}
// Create a table to display the attributes of this element
auto attributeTableWidget = new QTableWidget(popUp.get());
attributeTableWidget->verticalHeader()->setSectionResizeMode(QHeaderView::Stretch);
attributeTableWidget->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
attributeTableWidget->horizontalHeader()->hide();
attributeTableWidget->setEditTriggers(QAbstractItemView::NoEditTriggers);
auto numRows = attrbValList.size();
attributeTableWidget->setColumnCount(1);
attributeTableWidget->setRowCount(numRows);
attributeTableWidget->setVerticalHeaderLabels(attrbKeyList);
for(int i = 0; i<numRows; ++i)
{
auto item = new QTableWidgetItem(attrbValList[i]);
attributeTableWidget->setItem(i,0, item);
}
QString label = feat.attribute("TabName").toString();