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return results directly from the identify method instead of using a p…
…rivate attribute
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3nids committed Feb 7, 2013
1 parent cb7f7bf commit 24ca94bdaef0763bb023da7985d01b49c0ba71c3
Showing with 37 additions and 57 deletions.
  1. +2 −5 python/gui/qgsmaptoolidentify.sip
  2. +4 −4 src/app/qgsmaptoolidentifyaction.cpp
  3. +24 −36 src/gui/qgsmaptoolidentify.cpp
  4. +7 −12 src/gui/qgsmaptoolidentify.h
@@ -74,7 +74,7 @@ class QgsMapToolIdentify : QgsMapTool
@param layerList Performs the identification within the given list of layers. Default value is an empty list, i.e. uses all the layers.
@param mode Identification mode. Can use Qgis default settings or a defined mode. Default mode is DefaultQgsSetting.
@return true if identification succeeded and a feature has been found, false otherwise.*/
bool identify(int x, int y, QList<QgsMapLayer*> layerList = QList<QgsMapLayer*>(), IdentifyMode mode = DefaultQgsSetting);
IdentifyResults identify(int x, int y, QList<QgsMapLayer*> layerList = QList<QgsMapLayer*>(), IdentifyMode mode = DefaultQgsSetting);

/** Performs the identification.
To avoid beeing forced to specify IdentifyMode with a list of layers
@@ -84,10 +84,7 @@ class QgsMapToolIdentify : QgsMapTool
@param mode Identification mode. Can use Qgis default settings or a defined mode.
@param layerType Only performs identification in a certain type of layers (raster, vector). Default value is AllLayers.
@return true if identification succeeded and a feature has been found, false otherwise.*/
bool identify(int x, int y, IdentifyMode mode, LayerType layerType = AllLayers);

/** Access to results */
IdentifyResults &results();
IdentifyResults identify(int x, int y, IdentifyMode mode, LayerType layerType = AllLayers);

signals:
void identifyProgress( int, int );
@@ -93,23 +93,23 @@ void QgsMapToolIdentifyAction::canvasReleaseEvent( QMouseEvent *e )

connect( this, SIGNAL( identifyProgress( int, int ) ), QgisApp::instance(), SLOT( showProgress( int, int ) ) );
connect( this, SIGNAL( identifyMessage( QString ) ), QgisApp::instance(), SLOT( showStatusMessage( QString ) ) );
bool res = QgsMapToolIdentify::identify( e->x(), e->y() );
IdentifyResults results = QgsMapToolIdentify::identify( e->x(), e->y() );
disconnect( this, SIGNAL( identifyProgress( int, int ) ), QgisApp::instance(), SLOT( showProgress( int, int ) ) );
disconnect( this, SIGNAL( identifyMessage( QString ) ), QgisApp::instance(), SLOT( showStatusMessage( QString ) ) );


QList<VectorResult>::const_iterator vresult;
for ( vresult = results().mVectorResults.begin(); vresult != results().mVectorResults.end(); ++vresult )
for ( vresult = results.mVectorResults.begin(); vresult != results.mVectorResults.end(); ++vresult )
{
resultsDialog()->addFeature( vresult->mLayer, vresult->mFeature, vresult->mDerivedAttributes );
}
QList<RasterResult>::const_iterator rresult;
for ( rresult = results().mRasterResults.begin(); rresult != results().mRasterResults.end(); ++rresult )
for ( rresult = results.mRasterResults.begin(); rresult != results.mRasterResults.end(); ++rresult )
{
resultsDialog()->addFeature( rresult->mLayer, rresult->mLabel, rresult->mAttributes, rresult->mDerivedAttributes, rresult->mFields, rresult->mFeature );
}

if ( res )
if ( !results.mRasterResults.isEmpty() || !results.mVectorResults.isEmpty() )
{
resultsDialog()->show();
}
@@ -68,35 +68,29 @@ void QgsMapToolIdentify::canvasReleaseEvent( QMouseEvent *e )
Q_UNUSED( e );
}

bool QgsMapToolIdentify::identify( int x, int y, QList<QgsMapLayer *> layerList, IdentifyMode mode )
QgsMapToolIdentify::IdentifyResults QgsMapToolIdentify::identify ( int x, int y, QList<QgsMapLayer *> layerList, IdentifyMode mode )
{
return identify( x, y, mode, layerList, AllLayers );
}

bool QgsMapToolIdentify::identify( int x, int y, IdentifyMode mode, LayerType layerType )
QgsMapToolIdentify::IdentifyResults QgsMapToolIdentify::identify( int x, int y, IdentifyMode mode, LayerType layerType )
{
return identify( x, y, mode, QList<QgsMapLayer*>(), layerType );
}

bool QgsMapToolIdentify::identify( int x, int y, IdentifyMode mode, QList<QgsMapLayer*> layerList, LayerType layerType )
QgsMapToolIdentify::IdentifyResults QgsMapToolIdentify::identify( int x, int y, IdentifyMode mode, QList<QgsMapLayer*> layerList, LayerType layerType )
{
IdentifyResults results;

mLastPoint = mCanvas->getCoordinateTransform()->toMapCoordinates( x, y );
mLastExtent = mCanvas->extent();
mLastMapUnitsPerPixel = mCanvas->mapUnitsPerPixel();
return identify( mLastPoint, mLastExtent, mLastMapUnitsPerPixel, mode, layerList, layerType );
}

bool QgsMapToolIdentify::identify( QgsPoint point, QgsRectangle viewExtent, double mapUnitsPerPixel, IdentifyMode mode, QList<QgsMapLayer*> layerList, LayerType layerType )
{
bool res = false;
if ( !mCanvas || mCanvas->isDrawing() )
{
return res;
return results;
}

mResultData.mVectorResults.clear();
mResultData.mRasterResults.clear();

if ( mode == DefaultQgsSetting )
{
QSettings settings;
@@ -110,12 +104,12 @@ bool QgsMapToolIdentify::identify( QgsPoint point, QgsRectangle viewExtent, doub
if ( !layer )
{
emit identifyMessage( tr( "No active layer. To identify features, you must choose an active layer." ) );
return res;
return results;
}

QApplication::setOverrideCursor( Qt::WaitCursor );

res = identifyLayer( layer, point, viewExtent, mapUnitsPerPixel, layerType );
identifyLayer( &results, layer, mLastPoint, mLastExtent, mLastMapUnitsPerPixel, layerType );
}
else
{
@@ -145,9 +139,8 @@ bool QgsMapToolIdentify::identify( QgsPoint point, QgsRectangle viewExtent, doub
if ( noIdentifyLayerIdList.contains( layer->id() ) )
continue;

if ( identifyLayer( layer, point, viewExtent, mapUnitsPerPixel, layerType ) )
if ( identifyLayer( &results, layer, mLastPoint, mLastExtent, mLastMapUnitsPerPixel, layerType ) )
{
res = true;
if ( mode == TopDownStopAtFirst )
break;
}
@@ -159,7 +152,7 @@ bool QgsMapToolIdentify::identify( QgsPoint point, QgsRectangle viewExtent, doub

QApplication::restoreOverrideCursor();

return res;
return results;
}

void QgsMapToolIdentify::activate()
@@ -172,25 +165,24 @@ void QgsMapToolIdentify::deactivate()
QgsMapTool::deactivate();
}

bool QgsMapToolIdentify::identifyLayer( QgsMapLayer *layer, QgsPoint point, QgsRectangle viewExtent, double mapUnitsPerPixel, LayerType layerType )
bool QgsMapToolIdentify::identifyLayer( IdentifyResults *results, QgsMapLayer *layer, QgsPoint point, QgsRectangle viewExtent, double mapUnitsPerPixel, LayerType layerType )
{
if ( layer->type() == QgsMapLayer::RasterLayer && ( layerType == AllLayers || layerType == RasterLayer ) )
{
return identifyRasterLayer( qobject_cast<QgsRasterLayer *>( layer ), point, viewExtent, mapUnitsPerPixel, mResultData.mRasterResults );
return identifyRasterLayer( results, qobject_cast<QgsRasterLayer *>( layer ), point, viewExtent, mapUnitsPerPixel );
}
else if ( layer->type() == QgsMapLayer::VectorLayer && ( layerType == AllLayers || layerType == VectorLayer ) )
{
return identifyVectorLayer( qobject_cast<QgsVectorLayer *>( layer ), point );
return identifyVectorLayer( results, qobject_cast<QgsVectorLayer *>( layer ), point );
}
else
{
return false;
}
}

bool QgsMapToolIdentify::identifyVectorLayer( QgsVectorLayer *layer, QgsPoint point )
bool QgsMapToolIdentify::identifyVectorLayer( IdentifyResults *results, QgsVectorLayer *layer, QgsPoint point )
{
QgsDebugMsg( "point = " + point.toString() );
if ( !layer )
return false;

@@ -210,7 +202,6 @@ bool QgsMapToolIdentify::identifyVectorLayer( QgsVectorLayer *layer, QgsPoint po
QSettings settings;
double identifyValue = settings.value( "/Map/identifyRadius", QGis::DEFAULT_IDENTIFY_RADIUS ).toDouble();


if ( identifyValue <= 0.0 )
identifyValue = QGis::DEFAULT_IDENTIFY_RADIUS;

@@ -271,7 +262,7 @@ bool QgsMapToolIdentify::identifyVectorLayer( QgsVectorLayer *layer, QgsPoint po

derivedAttributes.insert( tr( "feature id" ), fid < 0 ? tr( "new feature" ) : FID_TO_STRING( fid ) );

mResultData.mVectorResults.append( VectorResult( layer, *f_it, derivedAttributes ) );
results->mVectorResults.append( VectorResult( layer, *f_it, derivedAttributes ) );
}

if ( renderer && renderer->capabilities() & QgsFeatureRendererV2::ScaleDependent )
@@ -348,7 +339,7 @@ QMap< QString, QString > QgsMapToolIdentify::featureDerivedAttributes( QgsFeatur
return derivedAttributes;
}

bool QgsMapToolIdentify::identifyRasterLayer( QgsRasterLayer *layer, QgsPoint point, QgsRectangle viewExtent, double mapUnitsPerPixel, QList<RasterResult>& rasterResults )
bool QgsMapToolIdentify::identifyRasterLayer( IdentifyResults *results, QgsRasterLayer *layer, QgsPoint point, QgsRectangle viewExtent, double mapUnitsPerPixel )
{
QgsDebugMsg( "point = " + point.toString() );
if ( !layer ) return false;
@@ -442,7 +433,7 @@ bool QgsMapToolIdentify::identifyRasterLayer( QgsRasterLayer *layer, QgsPoint po
attributes.insert( dprovider->generateBandName( bandNo ), valueString );
}
QString label = layer->name();
rasterResults.append( RasterResult( layer, label, attributes, derivedAttributes ) );
results->mRasterResults.append( RasterResult( layer, label, attributes, derivedAttributes ) );
}
else if ( format == QgsRasterDataProvider::IdentifyFormatFeature )
{
@@ -476,7 +467,7 @@ bool QgsMapToolIdentify::identifyRasterLayer( QgsRasterLayer *layer, QgsPoint po
QMap< QString, QString > derAttributes = derivedAttributes;
derAttributes.unite( featureDerivedAttributes( &feature, layer ) );

rasterResults.append( RasterResult( layer, labels.join( " / " ), featureStore.fields(), feature, derAttributes ) );
results->mRasterResults.append( RasterResult( layer, labels.join( " / " ), featureStore.fields(), feature, derAttributes ) );
}
}
}
@@ -491,7 +482,7 @@ bool QgsMapToolIdentify::identifyRasterLayer( QgsRasterLayer *layer, QgsPoint po
attributes.insert( "", value );

QString label = layer->subLayers().value( bandNo );
rasterResults.append( RasterResult( layer, label, attributes, derivedAttributes ) );
results->mRasterResults.append( RasterResult( layer, label, attributes, derivedAttributes ) );
}
}

@@ -515,16 +506,13 @@ QGis::UnitType QgsMapToolIdentify::displayUnits()
return mCanvas->mapUnits();
}

QgsMapToolIdentify::IdentifyResults &QgsMapToolIdentify::results()
{
return mResultData;
}

void QgsMapToolIdentify::formatChanged( QgsRasterLayer *layer )
{
QgsDebugMsg( "Entered" );
QList<RasterResult> rasterResults;
identifyRasterLayer( layer, mLastPoint, mLastExtent, mLastMapUnitsPerPixel, rasterResults );
emit changedRasterResults( rasterResults );
IdentifyResults results;
if ( identifyRasterLayer( &results, layer, mLastPoint, mLastExtent, mLastMapUnitsPerPixel ) )
{
emit changedRasterResults( results.mRasterResults );
}
}

@@ -121,7 +121,7 @@ class GUI_EXPORT QgsMapToolIdentify : public QgsMapTool
@param layerList Performs the identification within the given list of layers. Default value is an empty list, i.e. uses all the layers.
@param mode Identification mode. Can use Qgis default settings or a defined mode. Default mode is DefaultQgsSetting.
@return true if identification succeeded and a feature has been found, false otherwise.*/
bool identify( int x, int y, QList<QgsMapLayer*> layerList = QList<QgsMapLayer*>(), IdentifyMode mode = DefaultQgsSetting );
IdentifyResults identify( int x, int y, QList<QgsMapLayer*> layerList = QList<QgsMapLayer*>(), IdentifyMode mode = DefaultQgsSetting );

/** Performs the identification.
To avoid beeing forced to specify IdentifyMode with a list of layers
@@ -131,10 +131,7 @@ class GUI_EXPORT QgsMapToolIdentify : public QgsMapTool
@param mode Identification mode. Can use Qgis default settings or a defined mode.
@param layerType Only performs identification in a certain type of layers (raster, vector). Default value is AllLayers.
@return true if identification succeeded and a feature has been found, false otherwise.*/
bool identify( int x, int y, IdentifyMode mode, LayerType layerType = AllLayers );

/** Access to results */
IdentifyResults &results();
IdentifyResults identify( int x, int y, IdentifyMode mode, LayerType layerType = AllLayers );

public slots:
void formatChanged( QgsRasterLayer *layer );
@@ -154,13 +151,13 @@ class GUI_EXPORT QgsMapToolIdentify : public QgsMapTool
@param layerList Performs the identification within the given list of layers.
@param layerType Only performs identification in a certain type of layers (raster, vector).
@return true if identification succeeded and a feature has been found, false otherwise.*/
bool identify( int x, int y, IdentifyMode mode, QList<QgsMapLayer*> layerList, LayerType layerType = AllLayers );
IdentifyResults identify( int x, int y, IdentifyMode mode, QList<QgsMapLayer*> layerList, LayerType layerType = AllLayers );

bool identify( QgsPoint point, QgsRectangle viewExtent, double mapUnitsPerPixel, IdentifyMode mode, QList<QgsMapLayer*> layerList, LayerType layerType = AllLayers );
/** call the right method depending on layer type */
bool identifyLayer( IdentifyResults *results, QgsMapLayer *layer, QgsPoint point, QgsRectangle viewExtent, double mapUnitsPerPixel, LayerType layerType = AllLayers );

bool identifyLayer( QgsMapLayer *layer, QgsPoint point, QgsRectangle viewExtent, double mapUnitsPerPixel, LayerType layerType = AllLayers );
bool identifyRasterLayer( QgsRasterLayer *layer, QgsPoint point, QgsRectangle viewExtent, double mapUnitsPerPixel, QList<RasterResult>& rasterResults );
bool identifyVectorLayer( QgsVectorLayer *layer, QgsPoint point );
bool identifyRasterLayer( IdentifyResults *results, QgsRasterLayer *layer, QgsPoint point, QgsRectangle viewExtent, double mapUnitsPerPixel );
bool identifyVectorLayer( IdentifyResults *results, QgsVectorLayer *layer, QgsPoint point );

//! Private helper
virtual void convertMeasurement( QgsDistanceArea &calc, double &measure, QGis::UnitType &u, bool isArea );
@@ -170,8 +167,6 @@ class GUI_EXPORT QgsMapToolIdentify : public QgsMapTool

QMap< QString, QString > featureDerivedAttributes( QgsFeature *feature, QgsMapLayer *layer );

IdentifyResults mResultData;

// Last point in canvas CRS
QgsPoint mLastPoint;

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