void QgsMeasureDialog::mouseMove( QgsPoint &point )
{
QSettings settings;
int decimalPlaces = settings.value( "/qgis/measure/decimalplaces", "3" ).toInt();
// Create QgsDistance Area for customization ProjectionEnabled setting
QgsDistanceArea myDa;
configureDistanceArea( myDa );
// show current distance/area while moving the point
// by creating a temporary copy of point array
// and adding moving point at the end
if ( mMeasureArea && mTool->points().size() > 1 )
{
QList<QgsPoint> tmpPoints = mTool->points();
tmpPoints.append( point );
double area = myDa.measurePolygon( tmpPoints );
editTotal->setText( formatArea( area, decimalPlaces ) );
}
else if ( !mMeasureArea && mTool->points().size() > 0 )
{
QgsPoint p1( mTool->points().last() ), p2( point );
double d = myDa.measureLine( p1, p2 );
editTotal->setText( formatDistance( mTotal + d, decimalPlaces ) );
QGis::UnitType myDisplayUnits;
// Ignore units
convertMeasurement( d, myDisplayUnits, false );
QTreeWidgetItem *item = mTable->topLevelItem( mTable->topLevelItemCount() - 1 );
item->setText( 0, QLocale::system().toString( d, 'f', decimalPlaces ) );
}
}
void QgsMeasureDialog::removeLastPoint()
{
int numPoints = mTool->points().size();
if ( mMeasureArea )
{
if ( numPoints > 1 )
{
QList<QgsPoint> tmpPoints = mTool->points();
tmpPoints.append( mLastMousePoint );
double area = mDa.measurePolygon( tmpPoints );
editTotal->setText( formatArea( area ) );
}
else
{
editTotal->setText( formatArea( 0 ) );
}
}
else if ( !mMeasureArea && numPoints >= 1 )
{
//remove final row
delete mTable->takeTopLevelItem( mTable->topLevelItemCount() - 1 );
QgsPoint p1( mTool->points().last() );
double d = mDa.measureLine( p1, mLastMousePoint );
mTotal = mDa.measureLine( mTool->points() );
editTotal->setText( formatDistance( mTotal + d ) );
d = convertLength( d, mDistanceUnits );
QTreeWidgetItem *item = mTable->topLevelItem( mTable->topLevelItemCount() - 1 );
item->setText( 0, QLocale::system().toString( d, 'f', mDecimalPlaces ) );
}
}
void QgsMeasureDialog::mouseMove( QgsPoint &point )
{
// show current distance/area while moving the point
// by creating a temporary copy of point array
// and adding moving point at the end
if ( mMeasureArea && mTool->points().size() >= 2 )
{
QList<QgsPoint> tmpPoints = mTool->points();
tmpPoints.append( point );
double area = mDa.measurePolygon( tmpPoints );
editTotal->setText( formatArea( area ) );
}
else if ( !mMeasureArea && mTool->points().size() >= 1 )
{
QgsPoint p1( mTool->points().last() ), p2( point );
double d = mDa.measureLine( p1, p2 );
editTotal->setText( formatDistance( mTotal + d ) );
QGis::UnitType displayUnits;
// Meters or feet?
convertMeasurement( d, displayUnits, false );
// Set moving
QTreeWidgetItem *item = mTable->topLevelItem( mTable->topLevelItemCount() - 1 );
item->setText( 0, QLocale::system().toString( d, 'f', mDecimalPlaces ) );
QgsDebugMsg( QString( "Final result is %1" ).arg( item->text( 0 ) ) );
}
}
void QgsMeasureDialog::addPoint( QgsPoint &p )
{
Q_UNUSED( p );
int numPoints = mTool->points().size();
if ( mMeasureArea && numPoints > 2 )
{
double area = mDa.measurePolygon( mTool->points() );
editTotal->setText( formatArea( area ) );
}
else if ( !mMeasureArea && numPoints >= 1 )
{
if ( !mTool->done() )
{
QTreeWidgetItem * item = new QTreeWidgetItem( QStringList( QLocale::system().toString( 0.0, 'f', mDecimalPlaces ) ) );
item->setTextAlignment( 0, Qt::AlignRight );
mTable->addTopLevelItem( item );
mTable->scrollToItem( item );
}
if ( numPoints > 1 )
{
mTotal = mDa.measureLine( mTool->points() );
editTotal->setText( formatDistance( mTotal ) );
}
}
QgsDebugMsg( "Exiting" );
}
void QgsMeasureDialog::mouseMove( const QgsPointXY &point )
{
mLastMousePoint = point;
// show current distance/area while moving the point
// by creating a temporary copy of point array
// and adding moving point at the end
if ( mMeasureArea && mTool->points().size() >= 2 )
{
QVector<QgsPointXY> tmpPoints = mTool->points();
tmpPoints.append( point );
double area = mDa.measurePolygon( tmpPoints );
editTotal->setText( formatArea( area ) );
}
else if ( !mMeasureArea && !mTool->points().empty() )
{
QVector< QgsPointXY > tmpPoints = mTool->points();
QgsPointXY p1( tmpPoints.at( tmpPoints.size() - 1 ) ), p2( point );
double d = mDa.measureLine( p1, p2 );
editTotal->setText( formatDistance( mTotal + d ) );
d = convertLength( d, mDistanceUnits );
// Set moving
QTreeWidgetItem *item = mTable->topLevelItem( mTable->topLevelItemCount() - 1 );
if ( item )
{
item->setText( 0, QLocale::system().toString( d, 'f', mDecimalPlaces ) );
}
}
}
void QgsMeasureDialog::updateUi()
{
QSettings settings;
int decimalPlaces = settings.value( "/qgis/measure/decimalplaces", "3" ).toInt();
double dummy = 1.0;
QGis::UnitType myDisplayUnits;
// The dummy distance is ignored
convertMeasurement( dummy, myDisplayUnits, false );
switch ( myDisplayUnits )
{
case QGis::Meters:
mTable->setHeaderLabels( QStringList( tr( "Segments (in meters)" ) ) );
break;
case QGis::Feet:
mTable->setHeaderLabels( QStringList( tr( "Segments (in feet)" ) ) );
break;
case QGis::DegreesMinutesSeconds:
case QGis::DegreesDecimalMinutes:
case QGis::Degrees:
mTable->setHeaderLabels( QStringList( tr( "Segments (in degrees)" ) ) );
break;
case QGis::UnknownUnit:
mTable->setHeaderLabels( QStringList( tr( "Segments" ) ) );
};
if ( mMeasureArea )
{
mTable->hide();
editTotal->setText( formatArea( 0, decimalPlaces ) );
}
else
{
mTable->show();
editTotal->setText( formatDistance( 0, decimalPlaces ) );
}
}
void QgsMeasureDialog::addPoint( QgsPoint &point )
{
QSettings settings;
int decimalPlaces = settings.value( "/qgis/measure/decimalplaces", "3" ).toInt();
// Create QgsDistance Area for customization ProjectionEnabled setting
QgsDistanceArea myDa;
configureDistanceArea( myDa );
int numPoints = mTool->points().size();
if ( mMeasureArea && numPoints > 2 )
{
double area = myDa.measurePolygon( mTool->points() );
editTotal->setText( formatArea( area, decimalPlaces ) );
}
else if ( !mMeasureArea && numPoints > 1 )
{
int last = numPoints - 2;
QgsPoint p1 = mTool->points()[last], p2 = mTool->points()[last+1];
double d = myDa.measureLine( p1, p2 );
mTotal += d;
editTotal->setText( formatDistance( mTotal, decimalPlaces ) );
QGis::UnitType myDisplayUnits;
// Ignore units
convertMeasurement( d, myDisplayUnits, false );
QTreeWidgetItem *item = mTable->topLevelItem( mTable->topLevelItemCount() - 1 );
item->setText( 0, QLocale::system().toString( d, 'f', decimalPlaces ) );
item = new QTreeWidgetItem( QStringList( QLocale::system().toString( 0.0, 'f', decimalPlaces ) ) );
item->setTextAlignment( 0, Qt::AlignRight );
mTable->addTopLevelItem( item );
mTable->scrollToItem( item );
}
}
QMap< QString, QString > QgsMapToolIdentify::featureDerivedAttributes( QgsFeature *feature, QgsMapLayer *layer, const QgsPoint& layerPoint )
{
// Calculate derived attributes and insert:
// measure distance or area depending on geometry type
QMap< QString, QString > derivedAttributes;
// init distance/area calculator
QString ellipsoid = QgsProject::instance()->ellipsoid();
QgsDistanceArea calc;
calc.setEllipsoidalMode( mCanvas->hasCrsTransformEnabled() );
calc.setEllipsoid( ellipsoid );
calc.setSourceCrs( layer->crs().srsid() );
QgsWkbTypes::Type wkbType = QgsWkbTypes::NoGeometry;
QgsWkbTypes::GeometryType geometryType = QgsWkbTypes::NullGeometry;
QgsVertexId vId;
QgsPointV2 closestPoint;
if ( feature->hasGeometry() )
{
geometryType = feature->geometry().type();
wkbType = feature->geometry().geometry()->wkbType();
//find closest vertex to clicked point
closestPoint = QgsGeometryUtils::closestVertex( *feature->geometry().geometry(), QgsPointV2( layerPoint.x(), layerPoint.y() ), vId );
}
if ( QgsWkbTypes::isMultiType( wkbType ) )
{
QString str = QLocale::system().toString( static_cast<const QgsGeometryCollection*>( feature->geometry().geometry() )->numGeometries() );
derivedAttributes.insert( tr( "Parts" ), str );
str = QLocale::system().toString( vId.part + 1 );
derivedAttributes.insert( tr( "Part number" ), str );
}
if ( geometryType == QgsWkbTypes::LineGeometry )
{
double dist = calc.measureLength( feature->geometry() );
dist = calc.convertLengthMeasurement( dist, displayDistanceUnits() );
QString str = formatDistance( dist );
derivedAttributes.insert( tr( "Length" ), str );
const QgsCurve* curve = dynamic_cast< const QgsCurve* >( feature->geometry().geometry() );
if ( curve )
{
str = QLocale::system().toString( curve->nCoordinates() );
derivedAttributes.insert( tr( "Vertices" ), str );
//add details of closest vertex to identify point
closestVertexAttributes( *curve, vId, layer, derivedAttributes );
// Add the start and end points in as derived attributes
QgsPoint pnt = mCanvas->mapSettings().layerToMapCoordinates( layer, QgsPoint( curve->startPoint().x(), curve->startPoint().y() ) );
str = formatXCoordinate( pnt );
derivedAttributes.insert( tr( "firstX", "attributes get sorted; translation for lastX should be lexically larger than this one" ), str );
str = formatYCoordinate( pnt );
derivedAttributes.insert( tr( "firstY" ), str );
pnt = mCanvas->mapSettings().layerToMapCoordinates( layer, QgsPoint( curve->endPoint().x(), curve->endPoint().y() ) );
str = formatXCoordinate( pnt );
derivedAttributes.insert( tr( "lastX", "attributes get sorted; translation for firstX should be lexically smaller than this one" ), str );
str = formatYCoordinate( pnt );
derivedAttributes.insert( tr( "lastY" ), str );
}
}
else if ( geometryType == QgsWkbTypes::PolygonGeometry )
{
double area = calc.measureArea( feature->geometry() );
area = calc.convertAreaMeasurement( area, displayAreaUnits() );
QString str = formatArea( area );
derivedAttributes.insert( tr( "Area" ), str );
double perimeter = calc.measurePerimeter( feature->geometry() );
perimeter = calc.convertLengthMeasurement( perimeter, displayDistanceUnits() );
str = formatDistance( perimeter );
derivedAttributes.insert( tr( "Perimeter" ), str );
str = QLocale::system().toString( feature->geometry().geometry()->nCoordinates() );
derivedAttributes.insert( tr( "Vertices" ), str );
//add details of closest vertex to identify point
closestVertexAttributes( *feature->geometry().geometry(), vId, layer, derivedAttributes );
}
else if ( geometryType == QgsWkbTypes::PointGeometry &&
QgsWkbTypes::flatType( wkbType ) == QgsWkbTypes::Point )
{
// Include the x and y coordinates of the point as a derived attribute
QgsPoint pnt = mCanvas->mapSettings().layerToMapCoordinates( layer, feature->geometry().asPoint() );
QString str = formatXCoordinate( pnt );
derivedAttributes.insert( "X", str );
str = formatYCoordinate( pnt );
derivedAttributes.insert( "Y", str );
if ( QgsWkbTypes::hasZ( wkbType ) )
{
str = QLocale::system().toString( static_cast<const QgsPointV2*>( feature->geometry().geometry() )->z(), 'g', 10 );
derivedAttributes.insert( "Z", str );
}
if ( QgsWkbTypes::hasM( wkbType ) )
{
str = QLocale::system().toString( static_cast<const QgsPointV2*>( feature->geometry().geometry() )->m(), 'g', 10 );
derivedAttributes.insert( "M", str );
}
}
return derivedAttributes;
}
void QgsMeasureDialog::updateUi()
{
// Set tooltip to indicate how we calculate measurments
QString toolTip = tr( "The calculations are based on:" );
if ( ! mTool->canvas()->hasCrsTransformEnabled() )
{
toolTip += "<br> * " + tr( "Project CRS transformation is turned off." ) + " ";
toolTip += tr( "Canvas units setting is taken from project properties setting (%1)." ).arg( QGis::tr( mCanvasUnits ) );
toolTip += "<br> * " + tr( "Ellipsoidal calculation is not possible, as project CRS is undefined." );
setWindowTitle( tr( "Measure (OTF off)" ) );
}
else
{
if ( mDa.ellipsoidalEnabled() )
{
toolTip += "<br> * " + tr( "Project CRS transformation is turned on and ellipsoidal calculation is selected." ) + " ";
toolTip += "<br> * " + tr( "The coordinates are transformed to the chosen ellipsoid (%1), and the result is in meters" ).arg( mDa.ellipsoid() );
}
else
{
toolTip += "<br> * " + tr( "Project CRS transformation is turned on but ellipsoidal calculation is not selected." );
toolTip += "<br> * " + tr( "The canvas units setting is taken from the project CRS (%1)." ).arg( QGis::tr( mCanvasUnits ) );
}
setWindowTitle( tr( "Measure (OTF on)" ) );
}
if (( mCanvasUnits == QGis::Meters && mDisplayUnits == QGis::Feet ) || ( mCanvasUnits == QGis::Feet && mDisplayUnits == QGis::Meters ) )
{
toolTip += "<br> * " + tr( "Finally, the value is converted from %1 to %2." ).arg( QGis::tr( mCanvasUnits ) ).arg( QGis::tr( mDisplayUnits ) );
}
editTotal->setToolTip( toolTip );
mTable->setToolTip( toolTip );
QGis::UnitType newDisplayUnits;
double dummy = 1.0;
convertMeasurement( dummy, newDisplayUnits, true );
mTable->setHeaderLabels( QStringList( tr( "Segments [%1]" ).arg( QGis::tr( newDisplayUnits ) ) ) );
if ( mMeasureArea )
{
double area = 0.0;
if ( mTool->points().size() > 1 )
{
area = mDa.measurePolygon( mTool->points() );
}
mTable->hide(); // Hide the table, only show summary.
editTotal->setText( formatArea( area ) );
}
else
{
QList<QgsPoint>::const_iterator it;
bool b = true; // first point
QgsPoint p1, p2;
for ( it = mTool->points().constBegin(); it != mTool->points().constEnd(); ++it )
{
p2 = *it;
if ( !b )
{
double d = mDa.measureLine( p1, p2 );
QGis::UnitType dummyUnits;
convertMeasurement( d, dummyUnits, false );
QTreeWidgetItem *item = new QTreeWidgetItem( QStringList( QLocale::system().toString( d , 'f', mDecimalPlaces ) ) );
item->setTextAlignment( 0, Qt::AlignRight );
mTable->addTopLevelItem( item );
mTable->scrollToItem( item );
}
p1 = p2;
b = false;
}
mTotal = mDa.measureLine( mTool->points() );
mTable->show(); // Show the table with items
editTotal->setText( formatDistance( mTotal ) );
}
}
void QgsMeasureDialog::updateUi()
{
// Set tooltip to indicate how we calculate measurments
QString toolTip = tr( "The calculations are based on:" );
bool forceCartesian = false;
bool convertToDisplayUnits = true;
if ( mMeasureArea )
{
if ( mTool->canvas()->mapSettings().destinationCrs().mapUnits() == QgsUnitTypes::DistanceDegrees
&& ( mAreaUnits == QgsUnitTypes::AreaSquareDegrees || mAreaUnits == QgsUnitTypes::AreaUnknownUnit ) )
{
//both source and destination units are degrees
toolTip += "<br> * " + tr( "Both project CRS (%1) and measured area are in degrees, so area is calculated using cartesian calculations in square degrees." ).arg(
mTool->canvas()->mapSettings().destinationCrs().description() );
forceCartesian = true;
convertToDisplayUnits = false; //not required since we will be measuring in degrees
}
else
{
QgsUnitTypes::AreaUnit resultUnit = QgsUnitTypes::AreaUnknownUnit;
if ( ! mTool->canvas()->hasCrsTransformEnabled() )
{
resultUnit = QgsUnitTypes::distanceToAreaUnit( mTool->canvas()->mapSettings().destinationCrs().mapUnits() );
toolTip += "<br> * " + tr( "Project CRS transformation is turned off." ) + ' ';
toolTip += tr( "Area is calculated in %1, based on project CRS (%2)." ).arg( QgsUnitTypes::toString( resultUnit ),
mTool->canvas()->mapSettings().destinationCrs().description() );
toolTip += "<br> * " + tr( "Ellipsoidal calculation is not possible with CRS transformation disabled." );
setWindowTitle( tr( "Measure (OTF off)" ) );
}
else
{
if ( mDa.willUseEllipsoid() )
{
resultUnit = QgsUnitTypes::AreaSquareMeters;
toolTip += "<br> * " + tr( "Project CRS transformation is turned on and ellipsoidal calculation is selected." ) + ' ';
toolTip += "<br> * " + tr( "The coordinates are transformed to the chosen ellipsoid (%1), and the area is calculated in %2." ).arg( mDa.ellipsoid(),
QgsUnitTypes::toString( resultUnit ) );
}
else
{
resultUnit = QgsUnitTypes::distanceToAreaUnit( mTool->canvas()->mapSettings().destinationCrs().mapUnits() );
toolTip += "<br> * " + tr( "Project CRS transformation is turned on but ellipsoidal calculation is not selected." ) + ' ';
toolTip += tr( "Area is calculated in %1, based on project CRS (%2)." ).arg( QgsUnitTypes::toString( resultUnit ),
mTool->canvas()->mapSettings().destinationCrs().description() );
}
setWindowTitle( tr( "Measure (OTF on)" ) );
}
if ( QgsUnitTypes::unitType( resultUnit ) == QgsUnitTypes::Geographic &&
QgsUnitTypes::unitType( mAreaUnits ) == QgsUnitTypes::Standard )
{
toolTip += "<br> * Area is roughly converted to square meters by using scale at equator (1 degree = 111319.49 meters).";
resultUnit = QgsUnitTypes::AreaSquareMeters;
}
else if ( QgsUnitTypes::unitType( resultUnit ) == QgsUnitTypes::Standard &&
QgsUnitTypes::unitType( mAreaUnits ) == QgsUnitTypes::Geographic )
{
toolTip += "<br> * Area is roughly converted to square degrees by using scale at equator (1 degree = 111319.49 meters).";
resultUnit = QgsUnitTypes::AreaSquareDegrees;
}
if ( resultUnit != mAreaUnits )
{
if ( QgsUnitTypes::unitType( resultUnit ) == QgsUnitTypes::Standard &&
QgsUnitTypes::unitType( mAreaUnits ) == QgsUnitTypes::Standard )
{
// only shown if both conditions are true:
// - the display unit is a standard distance measurement (eg square feet)
// - either the canvas units is also a standard distance OR we are using an ellipsoid (in which case the
// value will be in square meters)
toolTip += "<br> * " + tr( "The value is converted from %1 to %2." ).arg( QgsUnitTypes::toString( resultUnit ),
QgsUnitTypes::toString( mAreaUnits ) );
}
else
{
//should not be possible!
}
}
}
}
else
{
if ( mTool->canvas()->mapSettings().destinationCrs().mapUnits() == QgsUnitTypes::DistanceDegrees
&& mDistanceUnits == QgsUnitTypes::DistanceDegrees )
{
//both source and destination units are degrees
toolTip += "<br> * " + tr( "Both project CRS (%1) and measured length are in degrees, so distance is calculated using cartesian calculations in degrees." ).arg(
mTool->canvas()->mapSettings().destinationCrs().description() );
forceCartesian = true;
convertToDisplayUnits = false; //not required since we will be measuring in degrees
}
else
{
QgsUnitTypes::DistanceUnit resultUnit = QgsUnitTypes::DistanceUnknownUnit;
if ( ! mTool->canvas()->hasCrsTransformEnabled() )
{
resultUnit = mTool->canvas()->mapSettings().destinationCrs().mapUnits();
toolTip += "<br> * " + tr( "Project CRS transformation is turned off." ) + ' ';
toolTip += tr( "Distance is calculated in %1, based on project CRS (%2)." ).arg( QgsUnitTypes::toString( resultUnit ),
mTool->canvas()->mapSettings().destinationCrs().description() );
toolTip += "<br> * " + tr( "Ellipsoidal calculation is not possible with CRS transformation disabled." );
setWindowTitle( tr( "Measure (OTF off)" ) );
}
else
{
if ( mDa.willUseEllipsoid() )
{
resultUnit = QgsUnitTypes::DistanceMeters;
toolTip += "<br> * " + tr( "Project CRS transformation is turned on and ellipsoidal calculation is selected." ) + ' ';
toolTip += "<br> * " + tr( "The coordinates are transformed to the chosen ellipsoid (%1), and the distance is calculated in %2." ).arg( mDa.ellipsoid(),
QgsUnitTypes::toString( resultUnit ) );
}
else
{
resultUnit = mTool->canvas()->mapSettings().destinationCrs().mapUnits();
toolTip += "<br> * " + tr( "Project CRS transformation is turned on but ellipsoidal calculation is not selected." ) + ' ';
toolTip += tr( "Distance is calculated in %1, based on project CRS (%2)." ).arg( QgsUnitTypes::toString( resultUnit ),
mTool->canvas()->mapSettings().destinationCrs().description() );
}
setWindowTitle( tr( "Measure (OTF on)" ) );
}
if ( QgsUnitTypes::unitType( resultUnit ) == QgsUnitTypes::Geographic &&
QgsUnitTypes::unitType( mDistanceUnits ) == QgsUnitTypes::Standard )
{
toolTip += "<br> * Distance is roughly converted to meters by using scale at equator (1 degree = 111319.49 meters).";
resultUnit = QgsUnitTypes::DistanceMeters;
}
else if ( QgsUnitTypes::unitType( resultUnit ) == QgsUnitTypes::Standard &&
QgsUnitTypes::unitType( mDistanceUnits ) == QgsUnitTypes::Geographic )
{
toolTip += "<br> * Distance is roughly converted to degrees by using scale at equator (1 degree = 111319.49 meters).";
resultUnit = QgsUnitTypes::DistanceDegrees;
}
if ( resultUnit != mDistanceUnits )
{
if ( QgsUnitTypes::unitType( resultUnit ) == QgsUnitTypes::Standard &&
QgsUnitTypes::unitType( mDistanceUnits ) == QgsUnitTypes::Standard )
{
// only shown if both conditions are true:
// - the display unit is a standard distance measurement (eg feet)
// - either the canvas units is also a standard distance OR we are using an ellipsoid (in which case the
// value will be in meters)
toolTip += "<br> * " + tr( "The value is converted from %1 to %2." ).arg( QgsUnitTypes::toString( resultUnit ),
QgsUnitTypes::toString( mDistanceUnits ) );
}
else
{
//should not be possible!
}
}
}
}
editTotal->setToolTip( toolTip );
mTable->setToolTip( toolTip );
mNotesLabel->setText( toolTip );
if ( mMeasureArea )
{
mUnitsCombo->setCurrentIndex( mUnitsCombo->findData( mAreaUnits ) );
}
else
{
mUnitsCombo->setCurrentIndex( mUnitsCombo->findData( mDistanceUnits ) );
mTable->setHeaderLabels( QStringList( tr( "Segments [%1]" ).arg( QgsUnitTypes::toString( mDistanceUnits ) ) ) );
}
if ( mMeasureArea )
{
double area = 0.0;
if ( mTool->points().size() > 1 )
{
area = mDa.measurePolygon( mTool->points() );
}
mTable->hide(); // Hide the table, only show summary.
editTotal->setText( formatArea( area ) );
}
else
{
QList<QgsPoint>::const_iterator it;
bool b = true; // first point
QgsPoint p1, p2;
mTotal = 0;
for ( it = mTool->points().constBegin(); it != mTool->points().constEnd(); ++it )
{
p2 = *it;
if ( !b )
{
double d = -1;
if ( forceCartesian )
{
//cartesian calculation forced
d = sqrt( p2.sqrDist( p1 ) );
mTotal += d;
}
else
{
d = mDa.measureLine( p1, p2 );
d = convertLength( d, mDistanceUnits );
}
QTreeWidgetItem *item = new QTreeWidgetItem( QStringList( QLocale::system().toString( d, 'f', mDecimalPlaces ) ) );
item->setTextAlignment( 0, Qt::AlignRight );
mTable->addTopLevelItem( item );
mTable->scrollToItem( item );
}
p1 = p2;
b = false;
}
if ( !forceCartesian )
mTotal = mDa.measureLine( mTool->points() );
mTable->show(); // Show the table with items
editTotal->setText( formatDistance( mTotal, convertToDisplayUnits ) );
}
}
void QgsMeasureDialog::changeProjectionEnabledState()
{
// store value
QSettings settings;
if ( mcbProjectionEnabled->isChecked() )
settings.setValue( "/qgis/measure/projectionEnabled", 2 );
else
settings.setValue( "/qgis/measure/projectionEnabled", 0 );
// clear interface
mTable->clear();
QTreeWidgetItem* item = new QTreeWidgetItem( QStringList( QString::number( 0, 'f', 1 ) ) );
item->setTextAlignment( 0, Qt::AlignRight );
mTable->addTopLevelItem( item );
mTotal = 0;
updateUi();
int decimalPlaces = settings.value( "/qgis/measure/decimalplaces", "3" ).toInt();
// create DistanceArea
QgsDistanceArea myDa;
configureDistanceArea( myDa );
if ( mMeasureArea )
{
double area = 0.0;
if ( mTool->points().size() > 1 )
{
area = myDa.measurePolygon( mTool->points() );
}
editTotal->setText( formatArea( area, decimalPlaces ) );
}
else
{
QList<QgsPoint>::const_iterator it;
bool b = true; // first point
QgsPoint p1, p2;
for ( it = mTool->points().constBegin(); it != mTool->points().constEnd(); ++it )
{
p2 = *it;
if ( !b )
{
double d = myDa.measureLine( p1, p2 );
mTotal += d;
editTotal->setText( formatDistance( mTotal, decimalPlaces ) );
QGis::UnitType myDisplayUnits;
convertMeasurement( d, myDisplayUnits, false );
QTreeWidgetItem *item = mTable->topLevelItem( mTable->topLevelItemCount() - 1 );
item->setText( 0, QLocale::system().toString( d, 'f', decimalPlaces ) );
item = new QTreeWidgetItem( QStringList( QLocale::system().toString( 0.0, 'f', decimalPlaces ) ) );
item->setTextAlignment( 0, Qt::AlignRight );
mTable->addTopLevelItem( item );
mTable->scrollToItem( item );
}
p1 = p2;
b = false;
}
}
}