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allow zooming to multiple features by their ID

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Changed QgsMapCanvas::zoomToFeatureId() to QgsMapCanvas::zoomToFeatureIds() accepting multiple IDs instead of just one.
This commit is contained in:
Sebastian Dietrich 2016-01-12 23:50:26 +01:00
parent 0ba089e6d4
commit e5f1d87506
4 changed files with 37 additions and 29 deletions
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6
python/gui/qgsmapcanvas.sip
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@ -168,10 +168,10 @@ class QgsMapCanvas : QGraphicsView
@param layer optionally specify different than current layer */ @param layer optionally specify different than current layer */
void zoomToSelected( QgsVectorLayer* layer = NULL ); void zoomToSelected( QgsVectorLayer* layer = NULL );
/** Set canvas extent to the bounding box of a feature /** Set canvas extent to the bounding box of a set of features
@param layer the vector layer @param layer the vector layer
@param id the feature id*/ @param ids the feature ids*/
void zoomToFeatureId( QgsVectorLayer* layer, QgsFeatureId id ); void zoomToFeatureIds( QgsVectorLayer* layer, const QgsFeatureIds& ids );
/** Pan to the selected features of current (vector) layer keeping same extent. */ /** Pan to the selected features of current (vector) layer keeping same extent. */
void panToSelected( QgsVectorLayer* layer = NULL ); void panToSelected( QgsVectorLayer* layer = NULL );

5
src/gui/attributetable/qgsdualview.cpp
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@ -409,11 +409,12 @@ void QgsDualView::zoomToCurrentFeature()
return; return;
} }
QgsFeatureId id = mFilterModel->rowToId( currentIndex ); QgsFeatureIds ids;
ids.insert( mFilterModel->rowToId( currentIndex ) );
QgsMapCanvas* canvas = mFilterModel->mapCanvas(); QgsMapCanvas* canvas = mFilterModel->mapCanvas();
if ( canvas ) if ( canvas )
{ {
canvas->zoomToFeatureId( mLayerCache->layer(), id ); canvas->zoomToFeatureIds( mLayerCache->layer(), ids );
} }
} }

49
src/gui/qgsmapcanvas.cpp
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@ -1071,38 +1071,45 @@ void QgsMapCanvas::zoomToFeatureExtent( QgsRectangle& rect )
refresh(); refresh();
} }
void QgsMapCanvas::zoomToFeatureId( QgsVectorLayer* layer, QgsFeatureId id ) void QgsMapCanvas::zoomToFeatureIds( QgsVectorLayer* layer, const QgsFeatureIds& ids )
{ {
if ( !layer ) if ( !layer )
{ {
return; return;
} }
QgsFeatureIterator it = layer->getFeatures( QgsFeatureRequest().setFilterFid( id ).setSubsetOfAttributes( QgsAttributeList() ) ); QgsFeatureIterator it = layer->getFeatures( QgsFeatureRequest().setFilterFids( ids ).setSubsetOfAttributes( QgsAttributeList() ) );
QgsRectangle rect;
rect.setMinimal();
QgsFeature fet; QgsFeature fet;
if ( !it.nextFeature( fet ) ) int featureCount = 0;
while ( it.nextFeature( fet ) )
{
QgsGeometry* geom = fet.geometry();
QString errorMessage;
if ( !geom || !geom->geometry() )
{
errorMessage = tr( "Feature does not have a geometry" );
}
else if ( geom->geometry()->isEmpty() )
{
errorMessage = tr( "Feature geometry is empty" );
}
if ( !errorMessage.isEmpty() )
{
emit messageEmitted( tr( "Zoom to feature id failed" ), errorMessage, QgsMessageBar::WARNING );
return;
}
QgsRectangle r = mapSettings().layerExtentToOutputExtent( layer, geom->boundingBox() );
rect.combineExtentWith( &r );
featureCount++;
}
if ( featureCount != ids.count() )
{ {
return; return;
} }
QgsGeometry* geom = fet.geometry();
QString errorMessage;
if ( !geom || !geom->geometry() )
{
errorMessage = tr( "Feature does not have a geometry" );
}
else if ( geom->geometry()->isEmpty() )
{
errorMessage = tr( "Feature geometry is empty" );
}
if ( !errorMessage.isEmpty() )
{
emit messageEmitted( tr( "Zoom to feature id failed" ), errorMessage, QgsMessageBar::WARNING );
return;
}
QgsRectangle rect = mapSettings().layerExtentToOutputExtent( layer, geom->boundingBox() );
zoomToFeatureExtent( rect ); zoomToFeatureExtent( rect );
} }

6
src/gui/qgsmapcanvas.h
View File

@ -238,10 +238,10 @@ class GUI_EXPORT QgsMapCanvas : public QGraphicsView
@param layer optionally specify different than current layer */ @param layer optionally specify different than current layer */
void zoomToSelected( QgsVectorLayer* layer = nullptr ); void zoomToSelected( QgsVectorLayer* layer = nullptr );
/** Set canvas extent to the bounding box of a feature /** Set canvas extent to the bounding box of a set of features
@param layer the vector layer @param layer the vector layer
@param id the feature id*/ @param ids the feature ids*/
void zoomToFeatureId( QgsVectorLayer* layer, QgsFeatureId id ); void zoomToFeatureIds( QgsVectorLayer* layer, const QgsFeatureIds& ids );
/** Pan to the selected features of current (vector) layer keeping same extent. */ /** Pan to the selected features of current (vector) layer keeping same extent. */
void panToSelected( QgsVectorLayer* layer = nullptr ); void panToSelected( QgsVectorLayer* layer = nullptr );