static
QJsonValue readLocalValue(const QJsonObject &json, const QString &key)
{
// start with language_country
const QString localeName = QLocale().name();
QString localKey = key + QLatin1Char('[') + localeName + QLatin1Char(']');
QJsonObject::ConstIterator it = json.constFind(localKey);
if (it != json.constEnd()) {
return it.value();
}
// drop _country
const int separatorIndex = localeName.indexOf(QLatin1Char('_'));
if (separatorIndex != -1) {
const int localKeySeparatorIndex = key.length() + 1 + separatorIndex;
localKey[localKeySeparatorIndex] = QLatin1Char(']');
localKey.truncate(localKeySeparatorIndex + 1);
it = json.constFind(localKey);
if (it != json.constEnd()) {
return it.value();
}
}
// default to unlocalized value
return json.value(key);
}
void MainWindow::on_treeWidget_currentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *previous)
{
QJsonValue jsonObj = current->data(0, Qt::UserRole).toJsonValue();
QJsonValue::Type jsonType = jsonObj.type();
switch(jsonType)
{
case QJsonValue::Bool:
ui->boolButton->setChecked(jsonObj.toBool());
break;
case QJsonValue::Double:
ui->doubleValue->setValue(jsonObj.toDouble());
break;
case QJsonValue::String:
ui->stringEdit->document()->setPlainText(jsonObj.toString());
break;
case QJsonValue::Array:
{
QJsonArray arr = jsonObj.toArray();
int count = arr.count();
ui->arrayList->clear();
for(int i = 0; i < count; ++i)
{
QString label = renderJsonValue(arr.at(i));
ui->arrayList->addItem(label);
}
}
break;
case QJsonValue::Object:
{
QJsonObject obj = jsonObj.toObject();
ui->objectTable->setRowCount(obj.count());
int row = 0;
for(QJsonObject::ConstIterator i = obj.begin(); i != obj.end(); ++i, ++row)
{
QTableWidgetItem *keyItem = new QTableWidgetItem(i.key());
QJsonValue val = i.value();
QTableWidgetItem *valItem = new QTableWidgetItem(renderJsonValue(val));
ui->objectTable->setItem(row, 0, keyItem);
ui->objectTable->setItem(row, 1, valItem);
}
}
break;
default:
break;
}
ui->typeSelector->setCurrentIndex(jsonObj.type() - 1);
}
void MainWindow::buildJsonTree(QTreeWidgetItem *parent, QJsonValue &obj, QString key = "")
{
QTreeWidgetItem *toAdd = NULL;
switch(obj.type())
{
case QJsonValue::Bool:
case QJsonValue::Double:
case QJsonValue::String:
case QJsonValue::Undefined:
case QJsonValue::Null:
toAdd = createJsonTreeLeaf(parent, obj, key);
break;
case QJsonValue::Array:
{
toAdd = new QTreeWidgetItem(parent);
QJsonArray array = obj.toArray();
int count = array.count();
toAdd->setText(0, key+"["+QString::number(count)+"]");
for(int i = 0; i < count; ++i)
{
QJsonValue val = array.at(i);
buildJsonTree(toAdd, val, QString::number(i)+" : ");
}
break;
}
case QJsonValue::Object:
{
toAdd = new QTreeWidgetItem(parent);
QJsonObject object = obj.toObject();
int count = object.count();
toAdd->setText(0, key+"{"+QString::number(count)+"}");
for(QJsonObject::ConstIterator i = object.begin(); i != object.end(); ++i)
{
QJsonValue val = i.value();
buildJsonTree(toAdd, val, i.key()+" : ");
}
break;
}
default:
break;
}
toAdd->setData(0, Qt::UserRole, QVariant(obj));
parent->addChild(toAdd);
}
void QEditorSettings::fromJson(const QJsonObject &root){
for( QJsonObject::ConstIterator it = root.begin(); it != root.end(); ++it ){
if ( it.key() == "font" ){
QJsonObject fontObj = it.value().toObject();
if ( fontObj.contains("size") ){
m_fontSize = root["size"].toInt();
emit fontSizeChanged(m_fontSize);
}
} else {
QEditorSettingsCategory* category = settingsFor(it.key());
if ( category )
category->fromJson(it.value());
else
qCritical("Failed to find settings for: %s", qPrintable(it.key()));
}
}
}
bool JsonParser::read( QIODevice* device )
{
// Assert previous document got released.
delete m_document;
m_document = new GeoDataDocument;
Q_ASSERT( m_document );
// Read file data
QJsonParseError error;
const QJsonDocument jsonDoc = QJsonDocument::fromJson(device->readAll(), &error);
if (jsonDoc.isNull()) {
qDebug() << "Error parsing GeoJSON : " << error.errorString();
return false;
}
// Start parsing
const QJsonValue featuresValue = jsonDoc.object().value(QStringLiteral("features"));
// In GeoJSON format, geometries are stored in features, so we iterate on features
if (featuresValue.isArray()) {
const QJsonArray featureArray = featuresValue.toArray();
// Parse each feature
for (int featureIndex = 0; featureIndex < featureArray.size(); ++featureIndex) {
const QJsonObject featureObject = featureArray[featureIndex].toObject();
// Check if the feature contains a geometry
const QJsonValue geometryValue = featureObject.value(QStringLiteral("geometry"));
if (geometryValue.isObject()) {
const QJsonObject geometryObject = geometryValue.toObject();
// Variables for creating the geometry
QList<GeoDataGeometry*> geometryList;
QList<GeoDataPlacemark*> placemarkList;
// Create the different geometry types
const QString geometryType = geometryObject.value(QStringLiteral("type")).toString().toUpper();
if (geometryType == QLatin1String("POLYGON")) {
// Check first that there are coordinates
const QJsonValue coordinatesValue = geometryObject.value(QStringLiteral("coordinates"));
if (coordinatesValue.isArray()) {
const QJsonArray coordinateArray = coordinatesValue.toArray();
GeoDataPolygon * geom = new GeoDataPolygon( RespectLatitudeCircle | Tessellate );
// Coordinates first array will be the outer boundary, if there are more
// positions those will be inner holes
for (int ringIndex = 0 ; ringIndex < coordinateArray.size(); ++ringIndex) {
const QJsonArray ringArray = coordinateArray[ringIndex].toArray();
GeoDataLinearRing linearRing;
for (int coordinatePairIndex = 0; coordinatePairIndex < ringArray.size(); ++coordinatePairIndex) {
const QJsonArray coordinatePairArray = ringArray[coordinatePairIndex].toArray();
const qreal longitude = coordinatePairArray.at(0).toDouble();
const qreal latitude = coordinatePairArray.at(1).toDouble();
linearRing.append( GeoDataCoordinates( longitude , latitude , 0 , GeoDataCoordinates::Degree ) );
}
// Outer ring
if (ringIndex == 0) {
geom->setOuterBoundary( linearRing );
}
// Inner holes
else {
geom->appendInnerBoundary( linearRing );
}
}
geometryList.append( geom );
}
} else if (geometryType == QLatin1String("MULTIPOLYGON")) {
// Check first that there are coordinates
const QJsonValue coordinatesValue = geometryObject.value(QStringLiteral("coordinates"));
if (coordinatesValue.isArray()) {
const QJsonArray coordinateArray = coordinatesValue.toArray();
for (int polygonIndex = 0; polygonIndex < coordinateArray.size(); ++polygonIndex) {
const QJsonArray polygonArray = coordinateArray[polygonIndex].toArray();
GeoDataPolygon * geom = new GeoDataPolygon( RespectLatitudeCircle | Tessellate );
// Coordinates first array will be the outer boundary, if there are more
// positions those will be inner holes
for (int ringIndex = 0 ; ringIndex < polygonArray.size(); ++ringIndex) {
const QJsonArray ringArray = polygonArray[ringIndex].toArray();
GeoDataLinearRing linearRing;
for (int coordinatePairIndex = 0; coordinatePairIndex < ringArray.size(); ++coordinatePairIndex) {
const QJsonArray coordinatePairArray = ringArray[coordinatePairIndex].toArray();
const qreal longitude = coordinatePairArray.at(0).toDouble();
const qreal latitude = coordinatePairArray.at(1).toDouble();
linearRing.append( GeoDataCoordinates( longitude , latitude , 0 , GeoDataCoordinates::Degree ) );
}
// Outer ring
if (ringIndex == 0) {
geom->setOuterBoundary( linearRing );
}
// Inner holes
else {
geom->appendInnerBoundary( linearRing );
}
}
geometryList.append( geom );
}
}
} else if (geometryType == QLatin1String("LINESTRING")) {
// Check first that there are coordinates
const QJsonValue coordinatesValue = geometryObject.value(QStringLiteral("coordinates"));
if (coordinatesValue.isArray()) {
const QJsonArray coordinateArray = coordinatesValue.toArray();
GeoDataLineString * geom = new GeoDataLineString( RespectLatitudeCircle | Tessellate );
for (int coordinatePairIndex = 0; coordinatePairIndex < coordinateArray.size(); ++coordinatePairIndex) {
const QJsonArray coordinatePairArray = coordinateArray[coordinatePairIndex].toArray();
const qreal longitude = coordinatePairArray.at(0).toDouble();
const qreal latitude = coordinatePairArray.at(1).toDouble();
geom->append( GeoDataCoordinates( longitude , latitude , 0 , GeoDataCoordinates::Degree ) );
}
geometryList.append( geom );
}
} else if (geometryType == QLatin1String("MULTILINESTRING")) {
// Check first that there are coordinates
const QJsonValue coordinatesValue = geometryObject.value(QStringLiteral("coordinates"));
if (coordinatesValue.isArray()) {
const QJsonArray coordinateArray = coordinatesValue.toArray();
for (int lineStringIndex = 0; lineStringIndex < coordinateArray.size(); ++lineStringIndex) {
const QJsonArray lineStringArray = coordinateArray[lineStringIndex].toArray();
GeoDataLineString * geom = new GeoDataLineString( RespectLatitudeCircle | Tessellate );
for (int coordinatePairIndex = 0; coordinatePairIndex < lineStringArray.size(); ++coordinatePairIndex) {
const QJsonArray coordinatePairArray = lineStringArray[coordinatePairIndex].toArray();
const qreal longitude = coordinatePairArray.at(0).toDouble();
const qreal latitude = coordinatePairArray.at(1).toDouble();
geom->append( GeoDataCoordinates( longitude , latitude , 0 , GeoDataCoordinates::Degree ) );
}
geometryList.append( geom );
}
}
} else if (geometryType == QLatin1String("POINT")) {
// Check first that there are coordinates
const QJsonValue coordinatesValue = geometryObject.value(QStringLiteral("coordinates"));
if (coordinatesValue.isArray()) {
const QJsonArray coordinatePairArray = coordinatesValue.toArray();
GeoDataPoint * geom = new GeoDataPoint();
const qreal longitude = coordinatePairArray.at(0).toDouble();
const qreal latitude = coordinatePairArray.at(1).toDouble();
geom->setCoordinates( GeoDataCoordinates( longitude , latitude , 0 , GeoDataCoordinates::Degree ) );
geometryList.append( geom );
}
} else if (geometryType == QLatin1String("MULTIPOINT")) {
// Check first that there are coordinates
const QJsonValue coordinatesValue = geometryObject.value(QStringLiteral("coordinates"));
if (coordinatesValue.isArray()) {
const QJsonArray coordinateArray = coordinatesValue.toArray();
for (int pointIndex = 0; pointIndex < coordinateArray.size(); ++pointIndex) {
const QJsonArray coordinatePairArray = coordinateArray[pointIndex].toArray();
GeoDataPoint * geom = new GeoDataPoint();
const qreal longitude = coordinatePairArray.at(0).toDouble();
const qreal latitude = coordinatePairArray.at(1).toDouble();
geom->setCoordinates( GeoDataCoordinates( longitude , latitude , 0 , GeoDataCoordinates::Degree ) );
geometryList.append( geom );
}
}
}
// Parse the features properties
const QJsonValue propertiesValue = featureObject.value(QStringLiteral("properties"));
if (!geometryList.isEmpty() && propertiesValue.isObject()) {
const QJsonObject propertiesObject = propertiesValue.toObject();
// First create a placemark for each geometry, there could be multi geometries
// that are translated into more than one geometry/placemark
for ( int numberGeometries = 0 ; numberGeometries < geometryList.length() ; numberGeometries++ ) {
GeoDataPlacemark * placemark = new GeoDataPlacemark();
placemarkList.append( placemark );
}
OsmPlacemarkData osmData;
QJsonObject::ConstIterator it = propertiesObject.begin();
const QJsonObject::ConstIterator end = propertiesObject.end();
for ( ; it != end; ++it) {
if (it.value().isObject() || it.value().isArray()) {
qDebug() << "Skipping property, values of type arrays and objects not supported:" << it.key();
continue;
}
// pass value through QVariant to also get bool & numbers
osmData.addTag(it.key(), it.value().toVariant().toString());
}
// If the property read, is the features name
const auto tagIter = osmData.findTag(QStringLiteral("name"));
if (tagIter != osmData.tagsEnd()) {
const QString& name = tagIter.value();
for (int pl = 0 ; pl < placemarkList.length(); ++pl) {
placemarkList.at(pl)->setName(name);
}
}
const GeoDataPlacemark::GeoDataVisualCategory category = StyleBuilder::determineVisualCategory(osmData);
if (category != GeoDataPlacemark::None) {
// Add the visual category to all the placemarks
for (int pl = 0 ; pl < placemarkList.length(); ++pl) {
placemarkList.at(pl)->setVisualCategory(category);
placemarkList.at(pl)->setOsmData(osmData);
}
}
}
// Add the geometry to the document
if ( geometryList.length() == placemarkList.length() ) {
while( placemarkList.length() > 0 ) {
GeoDataPlacemark * placemark = placemarkList.last();
placemarkList.pop_back();
GeoDataGeometry * geom = geometryList.last();
geometryList.pop_back();
placemark->setGeometry( geom );
placemark->setVisible( true );
m_document->append( placemark );
}
}
// If geometries or placemarks missing inside the lists, delete them
qDeleteAll( geometryList.begin(), geometryList.end() );
geometryList.clear();
qDeleteAll( placemarkList.begin(), placemarkList.end() );
placemarkList.clear();
}
}
}
return true;
}
void MainWindow::LoadJSON(QString fileName)
{
QFile jsonFile(fileName);
if(!jsonFile.open(QIODevice::ReadOnly | QIODevice::Text))
{
ui->statusBar->showMessage("Could not open file: " + fileName);
return;
}
QByteArray rawJson = jsonFile.readAll();
ui->textEdit->setText(QString(rawJson));
QJsonParseError error;
doc = new QJsonDocument(QJsonDocument::fromJson(rawJson, &error));
if(error.error != QJsonParseError::NoError)
{
ui->statusBar->showMessage("Failed to parse file: " + error.errorString());
delete doc;
doc = NULL;
return;
}
/*
QJsonObject root = doc->object();
for(QJsonObject::ConstIterator i = root.begin(); i != root.end(); ++i)
{
QTreeWidgetItem *toAdd = new QTreeWidgetItem();
toAdd->setText(0, i.key());
ui->treeWidget->addTopLevelItem(toAdd);
}
*/
QTreeWidgetItem *root = new QTreeWidgetItem();
QString rootId = "root";
QJsonValue rootVal;
if(doc->isArray())
{
QJsonArray array = doc->array();
rootVal = QJsonValue(array);
int count = array.count();
rootId += "["+QString::number(count)+"]";
for(int i = 0; i < count; ++i)
{
QJsonValue val = array.at(i);
buildJsonTree(root, val, QString::number(i)+" : ");
}
}
else if(doc->isObject())
{
QJsonObject object = doc->object();
rootVal = QJsonValue(object);
rootId += "{"+QString::number(object.count())+"}";
for(QJsonObject::ConstIterator i = object.begin(); i != object.end(); ++i)
{
QJsonValue val = i.value();
buildJsonTree(root, val, i.key()+" : ");
}
}
else
{
rootId = "Null or Undefined root object";
return;
}
root->setText(0, rootId);
root->setData(0, Qt::UserRole, QVariant(rootVal));
ui->treeWidget->addTopLevelItem(root);
ui->treeWidget->setCurrentItem(root);
}
