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4008 lines
111 KiB
C++
4008 lines
111 KiB
C++
/***************************************************************************
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qgsvectorlayer.cpp
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--------------------
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begin : Oct 29, 2003
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copyright : (C) 2003 by Gary E.Sherman
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email : sherman at mrcc.com
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This class implements a generic means to display vector layers. The features
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and attributes are read from the data store using a "data provider" plugin.
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QgsVectorLayer can be used with any data store for which an appropriate
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plugin is available.
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include <limits>
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#include <QImage>
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#include <QPainter>
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#include <QPainterPath>
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#include <QPolygonF>
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#include <QProgressDialog>
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#include <QSettings>
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#include <QString>
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#include <QDomNode>
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#include <QVector>
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#include "qgsvectorlayer.h"
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#include "qgsattributeaction.h"
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#include "qgis.h" //for globals
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#include "qgsapplication.h"
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#include "qgscoordinatetransform.h"
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#include "qgsdatasourceuri.h"
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#include "qgsfeature.h"
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#include "qgsfeaturerequest.h"
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#include "qgsfield.h"
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#include "qgsgeometry.h"
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#include "qgslabel.h"
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#include "qgslogger.h"
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#include "qgsmessagelog.h"
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#include "qgsmaptopixel.h"
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#include "qgspoint.h"
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#include "qgsproviderregistry.h"
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#include "qgsrectangle.h"
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#include "qgsrendercontext.h"
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#include "qgscoordinatereferencesystem.h"
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#include "qgsvectordataprovider.h"
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#include "qgsgeometrycache.h"
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#include "qgsvectorlayereditbuffer.h"
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#include "qgsvectorlayereditutils.h"
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#include "qgsvectorlayerfeatureiterator.h"
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#include "qgsvectorlayerjoinbuffer.h"
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#include "qgsvectorlayerundocommand.h"
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#include "qgsmaplayerregistry.h"
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#include "qgsclipper.h"
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#include "qgsproject.h"
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#include "qgsrendererv2.h"
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#include "qgssymbolv2.h"
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#include "qgssymbollayerv2.h"
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#include "qgssinglesymbolrendererv2.h"
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#include "qgsdiagramrendererv2.h"
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#include "qgsstylev2.h"
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#include "qgssymbologyv2conversion.h"
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#include "qgspallabeling.h"
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#ifdef TESTPROVIDERLIB
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#include <dlfcn.h>
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#endif
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typedef bool saveStyle_t(
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const QString& uri,
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const QString& qmlStyle,
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const QString& sldStyle,
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const QString& styleName,
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const QString& styleDescription,
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const QString& uiFileContent,
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bool useAsDefault,
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QString& errCause
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);
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typedef QString loadStyle_t(
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const QString& uri,
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QString& errCause
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);
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typedef int listStyles_t(
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const QString& uri,
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QStringList &ids,
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QStringList &names,
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QStringList &descriptions,
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QString& errCause
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);
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typedef QString getStyleById_t(
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const QString& uri,
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QString styleID,
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QString& errCause
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);
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QgsVectorLayer::QgsVectorLayer( QString vectorLayerPath,
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QString baseName,
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QString providerKey,
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bool loadDefaultStyleFlag )
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: QgsMapLayer( VectorLayer, baseName, vectorLayerPath )
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, mUpdateThreshold( 0 ) // XXX better default value?
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, mDataProvider( NULL )
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, mProviderKey( providerKey )
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, mReadOnly( false )
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, mRendererV2( NULL )
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, mLabel( 0 )
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, mLabelOn( false )
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, mLabelFontNotFoundNotified( false )
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, mFeatureBlendMode( QPainter::CompositionMode_SourceOver ) // Default to normal feature blending
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, mLayerTransparency( 0 )
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, mVertexMarkerOnlyForSelection( false )
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, mFeatureFormSuppress( SuppressDefault )
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, mCache( new QgsGeometryCache( this ) )
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, mEditBuffer( 0 )
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, mJoinBuffer( 0 )
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, mDiagramRenderer( 0 )
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, mDiagramLayerSettings( 0 )
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, mValidExtent( false )
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, mSymbolFeatureCounted( false )
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, mCurrentRendererContext( 0 )
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{
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mActions = new QgsAttributeAction( this );
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// if we're given a provider type, try to create and bind one to this layer
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if ( ! mProviderKey.isEmpty() )
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{
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setDataProvider( mProviderKey );
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}
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if ( mValid )
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{
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// Always set crs
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setCoordinateSystem();
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// check if there is a default style / propertysheet defined
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// for this layer and if so apply it
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bool defaultLoadedFlag = false;
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if ( loadDefaultStyleFlag )
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{
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loadDefaultStyle( defaultLoadedFlag );
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}
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// if the default style failed to load or was disabled use some very basic defaults
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if ( !defaultLoadedFlag && hasGeometryType() )
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{
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// add single symbol renderer
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setRendererV2( QgsFeatureRendererV2::defaultRenderer( geometryType() ) );
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}
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connect( QgsMapLayerRegistry::instance(), SIGNAL( layerWillBeRemoved( QString ) ), this, SLOT( checkJoinLayerRemove( QString ) ) );
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// Get the update threshold from user settings. We
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// do this only on construction to avoid the penality of
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// fetching this each time the layer is drawn. If the user
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// changes the threshold from the preferences dialog, it will
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// have no effect on existing layers
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// TODO: load this setting somewhere else [MD]
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//QSettings settings;
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//mUpdateThreshold = settings.readNumEntry("Map/updateThreshold", 1000);
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}
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connect( this, SIGNAL( selectionChanged( QgsFeatureIds, QgsFeatureIds, bool ) ), this, SIGNAL( selectionChanged() ) );
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} // QgsVectorLayer ctor
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QgsVectorLayer::~QgsVectorLayer()
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{
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QgsDebugMsg( "entered." );
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emit layerDeleted();
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mValid = false;
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delete mDataProvider;
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delete mEditBuffer;
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delete mJoinBuffer;
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delete mCache;
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delete mLabel;
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delete mDiagramLayerSettings;
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delete mActions;
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delete mRendererV2;
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}
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QString QgsVectorLayer::storageType() const
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{
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if ( mDataProvider )
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{
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return mDataProvider->storageType();
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}
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return 0;
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}
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QString QgsVectorLayer::capabilitiesString() const
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{
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if ( mDataProvider )
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{
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return mDataProvider->capabilitiesString();
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}
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return 0;
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}
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QString QgsVectorLayer::dataComment() const
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{
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if ( mDataProvider )
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{
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return mDataProvider->dataComment();
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}
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return QString();
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}
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QString QgsVectorLayer::providerType() const
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{
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return mProviderKey;
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}
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/**
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* sets the preferred display field based on some fuzzy logic
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*/
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void QgsVectorLayer::setDisplayField( QString fldName )
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{
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if ( !hasGeometryType() )
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return;
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// If fldName is provided, use it as the display field, otherwise
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// determine the field index for the feature column of the identify
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// dialog. We look for fields containing "name" first and second for
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// fields containing "id". If neither are found, the first field
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// is used as the node.
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QString idxName = "";
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QString idxId = "";
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if ( !fldName.isEmpty() )
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{
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mDisplayField = fldName;
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}
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else
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{
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const QgsFields &fields = pendingFields();
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int fieldsSize = fields.size();
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for ( int idx = 0; idx < fields.count(); ++idx )
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{
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QString fldName = fields[idx].name();
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QgsDebugMsg( "Checking field " + fldName + " of " + QString::number( fieldsSize ) + " total" );
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// Check the fields and keep the first one that matches.
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// We assume that the user has organized the data with the
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// more "interesting" field names first. As such, name should
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// be selected before oldname, othername, etc.
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if ( fldName.indexOf( "name", 0, Qt::CaseInsensitive ) > -1 )
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{
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if ( idxName.isEmpty() )
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{
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idxName = fldName;
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}
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}
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if ( fldName.indexOf( "descrip", 0, Qt::CaseInsensitive ) > -1 )
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{
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if ( idxName.isEmpty() )
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{
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idxName = fldName;
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}
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}
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if ( fldName.indexOf( "id", 0, Qt::CaseInsensitive ) > -1 )
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{
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if ( idxId.isEmpty() )
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{
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idxId = fldName;
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}
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}
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}
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//if there were no fields in the dbf just return - otherwise qgis segfaults!
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if ( fieldsSize == 0 )
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return;
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if ( idxName.length() > 0 )
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{
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mDisplayField = idxName;
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}
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else
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{
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if ( idxId.length() > 0 )
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{
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mDisplayField = idxId;
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}
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else
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{
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mDisplayField = fields[0].name();
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}
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}
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}
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}
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// NOTE this is a temporary method added by Tim to prevent label clipping
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// which was occurring when labeller was called in the main draw loop
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// This method will probably be removed again in the near future!
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void QgsVectorLayer::drawLabels( QgsRenderContext& rendererContext )
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{
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if ( !hasGeometryType() )
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return;
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QgsDebugMsg( "Starting draw of labels: " + id() );
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if ( mRendererV2 && mLabelOn &&
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( !mLabel->scaleBasedVisibility() ||
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( mLabel->minScale() <= rendererContext.rendererScale() &&
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rendererContext.rendererScale() <= mLabel->maxScale() ) ) )
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{
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QgsAttributeList attributes;
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foreach ( QString attrName, mRendererV2->usedAttributes() )
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{
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int attrNum = fieldNameIndex( attrName );
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attributes.append( attrNum );
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}
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// make sure the renderer is ready for classification ("symbolForFeature")
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mRendererV2->startRender( rendererContext, this );
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// Add fields required for labels
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mLabel->addRequiredFields( attributes );
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QgsDebugMsg( "Selecting features based on view extent" );
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int featureCount = 0;
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try
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{
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// select the records in the extent. The provider sets a spatial filter
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// and sets up the selection set for retrieval
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QgsFeatureIterator fit = getFeatures( QgsFeatureRequest()
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.setFilterRect( rendererContext.extent() )
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.setSubsetOfAttributes( attributes ) );
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QgsFeature fet;
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while ( fit.nextFeature( fet ) )
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{
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if ( mRendererV2->willRenderFeature( fet ) )
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{
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bool sel = mSelectedFeatureIds.contains( fet.id() );
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mLabel->renderLabel( rendererContext, fet, sel, 0 );
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}
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featureCount++;
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}
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}
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catch ( QgsCsException &e )
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{
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Q_UNUSED( e );
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QgsDebugMsg( "Error projecting label locations" );
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}
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if ( mRendererV2 )
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{
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mRendererV2->stopRender( rendererContext );
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}
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QgsDebugMsg( QString( "Total features processed %1" ).arg( featureCount ) );
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// XXX Something in our draw event is triggering an additional draw event when resizing [TE 01/26/06]
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// XXX Calling this will begin processing the next draw event causing image havoc and recursion crashes.
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//qApp->processEvents();
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}
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}
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void QgsVectorLayer::drawRendererV2( QgsFeatureIterator &fit, QgsRenderContext& rendererContext, bool labeling )
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{
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if ( !hasGeometryType() )
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return;
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mCurrentRendererContext = &rendererContext;
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QSettings settings;
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bool vertexMarkerOnlyForSelection = settings.value( "/qgis/digitizing/marker_only_for_selected", false ).toBool();
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#ifndef Q_WS_MAC
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int featureCount = 0;
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#endif //Q_WS_MAC
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QgsFeature fet;
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while ( fit.nextFeature( fet ) )
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{
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try
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{
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if ( !fet.geometry() )
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continue; // skip features without geometry
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#ifndef Q_WS_MAC //MH: disable this on Mac for now to avoid problems with resizing
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#ifdef Q_WS_X11
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if ( !mEnableBackbuffer ) // do not handle events, as we're already inside a paint event
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{
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#endif // Q_WS_X11
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if ( mUpdateThreshold > 0 && 0 == featureCount % mUpdateThreshold )
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{
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emit screenUpdateRequested();
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// emit drawingProgress( featureCount, totalFeatures );
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qApp->processEvents();
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}
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else if ( featureCount % 1000 == 0 )
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{
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// emit drawingProgress( featureCount, totalFeatures );
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qApp->processEvents();
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}
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#ifdef Q_WS_X11
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}
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#endif // Q_WS_X11
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#endif // Q_WS_MAC
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if ( rendererContext.renderingStopped() )
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{
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break;
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}
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bool sel = mSelectedFeatureIds.contains( fet.id() );
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bool drawMarker = ( mEditBuffer && ( !vertexMarkerOnlyForSelection || sel ) );
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// render feature
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bool rendered = mRendererV2->renderFeature( fet, rendererContext, -1, sel, drawMarker );
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if ( mEditBuffer )
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{
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// Cache this for the use of (e.g.) modifying the feature's uncommitted geometry.
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mCache->cacheGeometry( fet.id(), *fet.geometry() );
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}
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// labeling - register feature
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if ( rendered && rendererContext.labelingEngine() )
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{
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if ( labeling )
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{
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rendererContext.labelingEngine()->registerFeature( this, fet, rendererContext );
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}
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if ( mDiagramRenderer )
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{
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rendererContext.labelingEngine()->registerDiagramFeature( this, fet, rendererContext );
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}
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}
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}
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catch ( const QgsCsException &cse )
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{
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Q_UNUSED( cse );
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QgsDebugMsg( QString( "Failed to transform a point while drawing a feature with ID '%1'. Ignoring this feature. %2" )
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.arg( fet.id() ).arg( cse.what() ) );
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}
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#ifndef Q_WS_MAC
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++featureCount;
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#endif //Q_WS_MAC
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}
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stopRendererV2( rendererContext, NULL );
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mCurrentRendererContext = NULL;
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#ifndef Q_WS_MAC
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QgsDebugMsg( QString( "Total features processed %1" ).arg( featureCount ) );
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#endif
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}
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void QgsVectorLayer::drawRendererV2Levels( QgsFeatureIterator &fit, QgsRenderContext& rendererContext, bool labeling )
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{
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if ( !hasGeometryType() )
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return;
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QHash< QgsSymbolV2*, QList<QgsFeature> > features; // key = symbol, value = array of features
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QSettings settings;
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bool vertexMarkerOnlyForSelection = settings.value( "/qgis/digitizing/marker_only_for_selected", false ).toBool();
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QgsSingleSymbolRendererV2* selRenderer = NULL;
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if ( !mSelectedFeatureIds.isEmpty() )
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{
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selRenderer = new QgsSingleSymbolRendererV2( QgsSymbolV2::defaultSymbol( geometryType() ) );
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selRenderer->symbol()->setColor( rendererContext.selectionColor() );
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selRenderer->setVertexMarkerAppearance( currentVertexMarkerType(), currentVertexMarkerSize() );
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selRenderer->startRender( rendererContext, this );
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}
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// 1. fetch features
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QgsFeature fet;
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#ifndef Q_WS_MAC
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int featureCount = 0;
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#endif //Q_WS_MAC
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while ( fit.nextFeature( fet ) )
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{
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if ( !fet.geometry() )
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continue; // skip features without geometry
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if ( rendererContext.renderingStopped() )
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{
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stopRendererV2( rendererContext, selRenderer );
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return;
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}
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#ifndef Q_WS_MAC
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if ( featureCount % 1000 == 0 )
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{
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qApp->processEvents();
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}
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#endif //Q_WS_MAC
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QgsSymbolV2* sym = mRendererV2->symbolForFeature( fet );
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if ( !sym )
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{
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continue;
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}
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if ( !features.contains( sym ) )
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{
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features.insert( sym, QList<QgsFeature>() );
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}
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features[sym].append( fet );
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if ( mEditBuffer )
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{
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// Cache this for the use of (e.g.) modifying the feature's uncommitted geometry.
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mCache->cacheGeometry( fet.id(), *fet.geometry() );
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}
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if ( sym && rendererContext.labelingEngine() )
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{
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if ( labeling )
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{
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rendererContext.labelingEngine()->registerFeature( this, fet, rendererContext );
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}
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if ( mDiagramRenderer )
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{
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rendererContext.labelingEngine()->registerDiagramFeature( this, fet, rendererContext );
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}
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}
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#ifndef Q_WS_MAC
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++featureCount;
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#endif //Q_WS_MAC
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}
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// find out the order
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QgsSymbolV2LevelOrder levels;
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QgsSymbolV2List symbols = mRendererV2->symbols();
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for ( int i = 0; i < symbols.count(); i++ )
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{
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QgsSymbolV2* sym = symbols[i];
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for ( int j = 0; j < sym->symbolLayerCount(); j++ )
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{
|
|
int level = sym->symbolLayer( j )->renderingPass();
|
|
if ( level < 0 || level >= 1000 ) // ignore invalid levels
|
|
continue;
|
|
QgsSymbolV2LevelItem item( sym, j );
|
|
while ( level >= levels.count() ) // append new empty levels
|
|
levels.append( QgsSymbolV2Level() );
|
|
levels[level].append( item );
|
|
}
|
|
}
|
|
|
|
// 2. draw features in correct order
|
|
for ( int l = 0; l < levels.count(); l++ )
|
|
{
|
|
QgsSymbolV2Level& level = levels[l];
|
|
for ( int i = 0; i < level.count(); i++ )
|
|
{
|
|
QgsSymbolV2LevelItem& item = level[i];
|
|
if ( !features.contains( item.symbol() ) )
|
|
{
|
|
QgsDebugMsg( "level item's symbol not found!" );
|
|
continue;
|
|
}
|
|
int layer = item.layer();
|
|
QList<QgsFeature>& lst = features[item.symbol()];
|
|
QList<QgsFeature>::iterator fit;
|
|
#ifndef Q_WS_MAC
|
|
featureCount = 0;
|
|
#endif //Q_WS_MAC
|
|
for ( fit = lst.begin(); fit != lst.end(); ++fit )
|
|
{
|
|
if ( rendererContext.renderingStopped() )
|
|
{
|
|
stopRendererV2( rendererContext, selRenderer );
|
|
return;
|
|
}
|
|
#ifndef Q_WS_MAC
|
|
if ( featureCount % 1000 == 0 )
|
|
{
|
|
qApp->processEvents();
|
|
}
|
|
#endif //Q_WS_MAC
|
|
bool sel = mSelectedFeatureIds.contains( fit->id() );
|
|
// maybe vertex markers should be drawn only during the last pass...
|
|
bool drawMarker = ( mEditBuffer && ( !vertexMarkerOnlyForSelection || sel ) );
|
|
|
|
try
|
|
{
|
|
mRendererV2->renderFeature( *fit, rendererContext, layer, sel, drawMarker );
|
|
}
|
|
catch ( const QgsCsException &cse )
|
|
{
|
|
Q_UNUSED( cse );
|
|
QgsDebugMsg( QString( "Failed to transform a point while drawing a feature with ID '%1'. Ignoring this feature. %2" )
|
|
.arg( fet.id() ).arg( cse.what() ) );
|
|
}
|
|
#ifndef Q_WS_MAC
|
|
++featureCount;
|
|
#endif //Q_WS_MAC
|
|
}
|
|
}
|
|
}
|
|
|
|
stopRendererV2( rendererContext, selRenderer );
|
|
}
|
|
|
|
void QgsVectorLayer::reload()
|
|
{
|
|
if ( mDataProvider )
|
|
{
|
|
mDataProvider->reloadData();
|
|
}
|
|
}
|
|
|
|
bool QgsVectorLayer::draw( QgsRenderContext& rendererContext )
|
|
{
|
|
if ( !hasGeometryType() )
|
|
return true;
|
|
|
|
//set update threshold before each draw to make sure the current setting is picked up
|
|
QSettings settings;
|
|
mUpdateThreshold = settings.value( "Map/updateThreshold", 0 ).toInt();
|
|
// users could accidently set updateThreshold threshold to a small value
|
|
// and complain about bad performance -> force min 1000 here
|
|
if ( mUpdateThreshold > 0 && mUpdateThreshold < 1000 )
|
|
{
|
|
mUpdateThreshold = 1000;
|
|
}
|
|
|
|
#ifdef Q_WS_X11
|
|
mEnableBackbuffer = settings.value( "/Map/enableBackbuffer", 1 ).toBool();
|
|
#endif
|
|
|
|
if ( !mRendererV2 )
|
|
return false;
|
|
|
|
QgsDebugMsg( "rendering v2:\n" + mRendererV2->dump() );
|
|
|
|
if ( mEditBuffer )
|
|
{
|
|
// Destroy all cached geometries and clear the references to them
|
|
mCache->deleteCachedGeometries();
|
|
mCache->setCachedGeometriesRect( rendererContext.extent() );
|
|
|
|
// set editing vertex markers style
|
|
mRendererV2->setVertexMarkerAppearance( currentVertexMarkerType(), currentVertexMarkerSize() );
|
|
}
|
|
|
|
QgsAttributeList attributes;
|
|
foreach ( QString attrName, mRendererV2->usedAttributes() )
|
|
{
|
|
int attrNum = fieldNameIndex( attrName );
|
|
attributes.append( attrNum );
|
|
QgsDebugMsg( "attrs: " + attrName + " - " + QString::number( attrNum ) );
|
|
}
|
|
|
|
bool labeling = false;
|
|
//register label and diagram layer to the labeling engine
|
|
prepareLabelingAndDiagrams( rendererContext, attributes, labeling );
|
|
|
|
//do startRender before getFeatures to give renderers the possibility of querying features in the startRender method
|
|
mRendererV2->startRender( rendererContext, this );
|
|
|
|
QgsFeatureIterator fit = getFeatures( QgsFeatureRequest()
|
|
.setFilterRect( rendererContext.extent() )
|
|
.setSubsetOfAttributes( attributes ) );
|
|
|
|
if (( mRendererV2->capabilities() & QgsFeatureRendererV2::SymbolLevels )
|
|
&& mRendererV2->usingSymbolLevels() )
|
|
drawRendererV2Levels( fit, rendererContext, labeling );
|
|
else
|
|
drawRendererV2( fit, rendererContext, labeling );
|
|
|
|
return true;
|
|
}
|
|
|
|
void QgsVectorLayer::drawVertexMarker( double x, double y, QPainter& p, QgsVectorLayer::VertexMarkerType type, int m )
|
|
{
|
|
if ( type == QgsVectorLayer::SemiTransparentCircle )
|
|
{
|
|
p.setPen( QColor( 50, 100, 120, 200 ) );
|
|
p.setBrush( QColor( 200, 200, 210, 120 ) );
|
|
p.drawEllipse( x - m, y - m, m * 2 + 1, m * 2 + 1 );
|
|
}
|
|
else if ( type == QgsVectorLayer::Cross )
|
|
{
|
|
p.setPen( QColor( 255, 0, 0 ) );
|
|
p.drawLine( x - m, y + m, x + m, y - m );
|
|
p.drawLine( x - m, y - m, x + m, y + m );
|
|
}
|
|
}
|
|
|
|
void QgsVectorLayer::select( const QgsFeatureId& fid )
|
|
{
|
|
mSelectedFeatureIds.insert( fid );
|
|
|
|
setCacheImage( 0 );
|
|
emit selectionChanged( QgsFeatureIds() << fid, QgsFeatureIds(), false );
|
|
}
|
|
|
|
void QgsVectorLayer::select( const QgsFeatureIds& featureIds )
|
|
{
|
|
mSelectedFeatureIds.unite( featureIds );
|
|
|
|
setCacheImage( 0 );
|
|
emit selectionChanged( featureIds, QgsFeatureIds(), false );
|
|
}
|
|
|
|
void QgsVectorLayer::deselect( const QgsFeatureId fid )
|
|
{
|
|
mSelectedFeatureIds.remove( fid );
|
|
|
|
setCacheImage( 0 );
|
|
emit selectionChanged( QgsFeatureIds(), QgsFeatureIds() << fid, false );
|
|
}
|
|
|
|
void QgsVectorLayer::deselect( const QgsFeatureIds& featureIds )
|
|
{
|
|
mSelectedFeatureIds.subtract( featureIds );
|
|
|
|
setCacheImage( 0 );
|
|
emit selectionChanged( QgsFeatureIds(), featureIds, false );
|
|
}
|
|
|
|
void QgsVectorLayer::select( QgsRectangle & rect, bool addToSelection )
|
|
{
|
|
// normalize the rectangle
|
|
rect.normalize();
|
|
|
|
//select all the elements
|
|
QgsFeatureIterator fit = getFeatures( QgsFeatureRequest()
|
|
.setFilterRect( rect )
|
|
.setFlags( QgsFeatureRequest::ExactIntersect | QgsFeatureRequest::NoGeometry )
|
|
.setSubsetOfAttributes( QgsAttributeList() ) );
|
|
|
|
QgsFeatureIds ids;
|
|
|
|
QgsFeature f;
|
|
while ( fit.nextFeature( f ) )
|
|
{
|
|
ids << f.id();
|
|
}
|
|
|
|
if ( !addToSelection )
|
|
{
|
|
setSelectedFeatures( mSelectedFeatureIds + ids );
|
|
}
|
|
else
|
|
{
|
|
select( ids );
|
|
}
|
|
}
|
|
|
|
void QgsVectorLayer::modifySelection( QgsFeatureIds selectIds, QgsFeatureIds deselectIds )
|
|
{
|
|
QgsFeatureIds intersectingIds = selectIds & deselectIds;
|
|
if ( intersectingIds.count() > 0 )
|
|
{
|
|
QgsDebugMsg( "Trying to select and deselect the same item at the same time. Unsure what to do. Selecting dubious items." );
|
|
}
|
|
|
|
mSelectedFeatureIds -= deselectIds;
|
|
mSelectedFeatureIds += selectIds;
|
|
|
|
setCacheImage( 0 );
|
|
|
|
emit selectionChanged( selectIds, deselectIds - intersectingIds, false );
|
|
}
|
|
|
|
void QgsVectorLayer::invertSelection()
|
|
{
|
|
// copy the ids of selected features to tmp
|
|
QgsFeatureIds tmp = mSelectedFeatureIds;
|
|
|
|
QgsFeatureIterator fit = getFeatures( QgsFeatureRequest()
|
|
.setFlags( QgsFeatureRequest::NoGeometry )
|
|
.setSubsetOfAttributes( QgsAttributeList() ) );
|
|
|
|
QgsFeatureIds ids;
|
|
|
|
QgsFeature fet;
|
|
while ( fit.nextFeature( fet ) )
|
|
{
|
|
ids << fet.id();
|
|
}
|
|
|
|
ids.subtract( mSelectedFeatureIds );
|
|
|
|
setSelectedFeatures( ids );
|
|
}
|
|
|
|
void QgsVectorLayer::selectAll()
|
|
{
|
|
QgsFeatureIterator fit = getFeatures( QgsFeatureRequest()
|
|
.setFlags( QgsFeatureRequest::NoGeometry )
|
|
.setSubsetOfAttributes( QgsAttributeList() ) );
|
|
|
|
QgsFeatureIds ids;
|
|
|
|
QgsFeature fet;
|
|
while ( fit.nextFeature( fet ) )
|
|
{
|
|
ids << fet.id();
|
|
}
|
|
|
|
setSelectedFeatures( ids );
|
|
}
|
|
|
|
void QgsVectorLayer::invertSelectionInRectangle( QgsRectangle & rect )
|
|
{
|
|
// normalize the rectangle
|
|
rect.normalize();
|
|
|
|
QgsFeatureIterator fit = getFeatures( QgsFeatureRequest()
|
|
.setFilterRect( rect )
|
|
.setFlags( QgsFeatureRequest::NoGeometry | QgsFeatureRequest::ExactIntersect )
|
|
.setSubsetOfAttributes( QgsAttributeList() ) );
|
|
|
|
QgsFeatureIds selectIds;
|
|
QgsFeatureIds deselectIds;
|
|
|
|
QgsFeature fet;
|
|
while ( fit.nextFeature( fet ) )
|
|
{
|
|
if ( mSelectedFeatureIds.contains( fet.id() ) )
|
|
{
|
|
deselectIds << fet.id();
|
|
}
|
|
else
|
|
{
|
|
selectIds << fet.id();
|
|
}
|
|
}
|
|
|
|
modifySelection( selectIds, deselectIds );
|
|
}
|
|
|
|
void QgsVectorLayer::removeSelection()
|
|
{
|
|
if ( mSelectedFeatureIds.size() == 0 )
|
|
return;
|
|
|
|
setSelectedFeatures( QgsFeatureIds() );
|
|
}
|
|
|
|
void QgsVectorLayer::triggerRepaint()
|
|
{
|
|
emit repaintRequested();
|
|
}
|
|
|
|
QgsVectorDataProvider* QgsVectorLayer::dataProvider()
|
|
{
|
|
return mDataProvider;
|
|
}
|
|
|
|
const QgsVectorDataProvider* QgsVectorLayer::dataProvider() const
|
|
{
|
|
return mDataProvider;
|
|
}
|
|
|
|
void QgsVectorLayer::setProviderEncoding( const QString& encoding )
|
|
{
|
|
if ( mDataProvider )
|
|
{
|
|
mDataProvider->setEncoding( encoding );
|
|
updateFields();
|
|
}
|
|
}
|
|
|
|
void QgsVectorLayer::setDiagramRenderer( QgsDiagramRendererV2* r )
|
|
{
|
|
delete mDiagramRenderer;
|
|
mDiagramRenderer = r;
|
|
}
|
|
|
|
QGis::GeometryType QgsVectorLayer::geometryType() const
|
|
{
|
|
if ( mDataProvider )
|
|
{
|
|
int type = mDataProvider->geometryType();
|
|
switch ( type )
|
|
{
|
|
case QGis::WKBPoint:
|
|
case QGis::WKBPoint25D:
|
|
return QGis::Point;
|
|
|
|
case QGis::WKBLineString:
|
|
case QGis::WKBLineString25D:
|
|
return QGis::Line;
|
|
|
|
case QGis::WKBPolygon:
|
|
case QGis::WKBPolygon25D:
|
|
return QGis::Polygon;
|
|
|
|
case QGis::WKBMultiPoint:
|
|
case QGis::WKBMultiPoint25D:
|
|
return QGis::Point;
|
|
|
|
case QGis::WKBMultiLineString:
|
|
case QGis::WKBMultiLineString25D:
|
|
return QGis::Line;
|
|
|
|
case QGis::WKBMultiPolygon:
|
|
case QGis::WKBMultiPolygon25D:
|
|
return QGis::Polygon;
|
|
|
|
case QGis::WKBNoGeometry:
|
|
return QGis::NoGeometry;
|
|
}
|
|
QgsDebugMsg( QString( "Data Provider Geometry type is not recognised, is %1" ).arg( type ) );
|
|
}
|
|
else
|
|
{
|
|
QgsDebugMsg( "pointer to mDataProvider is null" );
|
|
}
|
|
|
|
// We shouldn't get here, and if we have, other things are likely to
|
|
// go wrong. Code that uses the type() return value should be
|
|
// rewritten to cope with a value of QGis::Unknown. To make this
|
|
// need known, the following message is printed every time we get
|
|
// here.
|
|
QgsDebugMsg( "WARNING: This code should never be reached. Problems may occur..." );
|
|
|
|
return QGis::UnknownGeometry;
|
|
}
|
|
|
|
bool QgsVectorLayer::hasGeometryType() const
|
|
{
|
|
QGis::GeometryType t = geometryType();
|
|
return ( t != QGis::NoGeometry && t != QGis::UnknownGeometry );
|
|
}
|
|
|
|
QGis::WkbType QgsVectorLayer::wkbType() const
|
|
{
|
|
return ( QGis::WkbType )( mWkbType );
|
|
}
|
|
|
|
QgsRectangle QgsVectorLayer::boundingBoxOfSelected()
|
|
{
|
|
if ( mSelectedFeatureIds.size() == 0 ) //no selected features
|
|
{
|
|
return QgsRectangle( 0, 0, 0, 0 );
|
|
}
|
|
|
|
QgsRectangle r, retval;
|
|
retval.setMinimal();
|
|
|
|
QgsFeature fet;
|
|
if ( mDataProvider->capabilities() & QgsVectorDataProvider::SelectAtId )
|
|
{
|
|
foreach ( QgsFeatureId fid, mSelectedFeatureIds )
|
|
{
|
|
if ( getFeatures( QgsFeatureRequest()
|
|
.setFilterFid( fid )
|
|
.setSubsetOfAttributes( QgsAttributeList() ) )
|
|
.nextFeature( fet ) &&
|
|
fet.geometry() )
|
|
{
|
|
r = fet.geometry()->boundingBox();
|
|
retval.combineExtentWith( &r );
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
QgsFeatureIterator fit = getFeatures( QgsFeatureRequest()
|
|
.setSubsetOfAttributes( QgsAttributeList() ) );
|
|
|
|
while ( fit.nextFeature( fet ) )
|
|
{
|
|
if ( mSelectedFeatureIds.contains( fet.id() ) )
|
|
{
|
|
if ( fet.geometry() )
|
|
{
|
|
r = fet.geometry()->boundingBox();
|
|
retval.combineExtentWith( &r );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( retval.width() == 0.0 || retval.height() == 0.0 )
|
|
{
|
|
// If all of the features are at the one point, buffer the
|
|
// rectangle a bit. If they are all at zero, do something a bit
|
|
// more crude.
|
|
|
|
if ( retval.xMinimum() == 0.0 && retval.xMaximum() == 0.0 &&
|
|
retval.yMinimum() == 0.0 && retval.yMaximum() == 0.0 )
|
|
{
|
|
retval.set( -1.0, -1.0, 1.0, 1.0 );
|
|
}
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
long QgsVectorLayer::featureCount() const
|
|
{
|
|
if ( !mDataProvider )
|
|
{
|
|
QgsDebugMsg( "invoked with null mDataProvider" );
|
|
return 0;
|
|
}
|
|
|
|
return mDataProvider->featureCount();
|
|
}
|
|
|
|
long QgsVectorLayer::featureCount( QgsSymbolV2* symbol )
|
|
{
|
|
if ( !mSymbolFeatureCounted ) return -1;
|
|
return mSymbolFeatureCountMap.value( symbol );
|
|
}
|
|
|
|
bool QgsVectorLayer::countSymbolFeatures( bool showProgress )
|
|
{
|
|
if ( mSymbolFeatureCounted ) return true;
|
|
mSymbolFeatureCountMap.clear();
|
|
|
|
if ( !mDataProvider )
|
|
{
|
|
QgsDebugMsg( "invoked with null mDataProvider" );
|
|
return false;
|
|
}
|
|
if ( !mRendererV2 )
|
|
{
|
|
QgsDebugMsg( "invoked with null mRendererV2" );
|
|
return false;
|
|
}
|
|
|
|
QgsLegendSymbolList symbolList = mRendererV2->legendSymbolItems();
|
|
QgsLegendSymbolList::const_iterator symbolIt = symbolList.constBegin();
|
|
|
|
for ( ; symbolIt != symbolList.constEnd(); ++symbolIt )
|
|
{
|
|
mSymbolFeatureCountMap.insert( symbolIt->second, 0 );
|
|
}
|
|
|
|
long nFeatures = pendingFeatureCount();
|
|
QProgressDialog progressDialog( tr( "Updating feature count for layer %1" ).arg( name() ), tr( "Abort" ), 0, nFeatures );
|
|
progressDialog.setWindowModality( Qt::WindowModal );
|
|
int featuresCounted = 0;
|
|
|
|
QgsFeatureIterator fit = getFeatures( QgsFeatureRequest().setFlags( QgsFeatureRequest::NoGeometry ) );
|
|
|
|
// Renderer (rule based) may depend on context scale, with scale is ignored if 0
|
|
QgsRenderContext renderContext;
|
|
renderContext.setRendererScale( 0 );
|
|
mRendererV2->startRender( renderContext, this );
|
|
|
|
QgsFeature f;
|
|
while ( fit.nextFeature( f ) )
|
|
{
|
|
QgsSymbolV2List featureSymbolList = mRendererV2->symbolsForFeature( f );
|
|
for ( QgsSymbolV2List::iterator symbolIt = featureSymbolList.begin(); symbolIt != featureSymbolList.end(); ++symbolIt )
|
|
{
|
|
mSymbolFeatureCountMap[*symbolIt] += 1;
|
|
}
|
|
++featuresCounted;
|
|
|
|
if ( showProgress )
|
|
{
|
|
if ( featuresCounted % 50 == 0 )
|
|
{
|
|
if ( featuresCounted > nFeatures ) //sometimes the feature count is not correct
|
|
{
|
|
progressDialog.setMaximum( 0 );
|
|
}
|
|
progressDialog.setValue( featuresCounted );
|
|
if ( progressDialog.wasCanceled() )
|
|
{
|
|
mSymbolFeatureCountMap.clear();
|
|
mRendererV2->stopRender( renderContext );
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
mRendererV2->stopRender( renderContext );
|
|
progressDialog.setValue( nFeatures );
|
|
mSymbolFeatureCounted = true;
|
|
return true;
|
|
}
|
|
|
|
void QgsVectorLayer::updateExtents()
|
|
{
|
|
mValidExtent = false;
|
|
}
|
|
|
|
void QgsVectorLayer::setExtent( const QgsRectangle &r )
|
|
{
|
|
QgsMapLayer::setExtent( r );
|
|
mValidExtent = true;
|
|
}
|
|
|
|
QgsRectangle QgsVectorLayer::extent()
|
|
{
|
|
if ( mValidExtent )
|
|
return QgsMapLayer::extent();
|
|
|
|
QgsRectangle rect;
|
|
rect.setMinimal();
|
|
|
|
if ( !hasGeometryType() )
|
|
return rect;
|
|
|
|
if ( !mDataProvider )
|
|
{
|
|
QgsDebugMsg( "invoked with null mDataProvider" );
|
|
}
|
|
|
|
if ( mEditBuffer && mEditBuffer->mDeletedFeatureIds.isEmpty() && mEditBuffer->mChangedGeometries.isEmpty() )
|
|
{
|
|
mDataProvider->updateExtents();
|
|
|
|
// get the extent of the layer from the provider
|
|
// but only when there are some features already
|
|
if ( mDataProvider->featureCount() != 0 )
|
|
{
|
|
QgsRectangle r = mDataProvider->extent();
|
|
rect.combineExtentWith( &r );
|
|
}
|
|
|
|
for ( QgsFeatureMap::iterator it = mEditBuffer->mAddedFeatures.begin(); it != mEditBuffer->mAddedFeatures.end(); it++ )
|
|
{
|
|
QgsRectangle r = it->geometry()->boundingBox();
|
|
rect.combineExtentWith( &r );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
QgsFeatureIterator fit = getFeatures( QgsFeatureRequest()
|
|
.setSubsetOfAttributes( QgsAttributeList() ) );
|
|
|
|
QgsFeature fet;
|
|
while ( fit.nextFeature( fet ) )
|
|
{
|
|
if ( fet.geometry() && fet.geometry()->type() != QGis::UnknownGeometry )
|
|
{
|
|
QgsRectangle bb = fet.geometry()->boundingBox();
|
|
rect.combineExtentWith( &bb );
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( rect.xMinimum() > rect.xMaximum() && rect.yMinimum() > rect.yMaximum() )
|
|
{
|
|
// special case when there are no features in provider nor any added
|
|
rect = QgsRectangle(); // use rectangle with zero coordinates
|
|
}
|
|
|
|
setExtent( rect );
|
|
|
|
// Send this (hopefully) up the chain to the map canvas
|
|
emit recalculateExtents();
|
|
|
|
return rect;
|
|
}
|
|
|
|
QString QgsVectorLayer::subsetString()
|
|
{
|
|
if ( ! mDataProvider )
|
|
{
|
|
QgsDebugMsg( "invoked with null mDataProvider" );
|
|
return 0;
|
|
}
|
|
return mDataProvider->subsetString();
|
|
}
|
|
|
|
bool QgsVectorLayer::setSubsetString( QString subset )
|
|
{
|
|
if ( ! mDataProvider )
|
|
{
|
|
QgsDebugMsg( "invoked with null mDataProvider" );
|
|
return false;
|
|
}
|
|
|
|
bool res = mDataProvider->setSubsetString( subset );
|
|
|
|
// get the updated data source string from the provider
|
|
mDataSource = mDataProvider->dataSourceUri();
|
|
updateExtents();
|
|
|
|
if ( res )
|
|
setCacheImage( 0 );
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
QgsFeatureIterator QgsVectorLayer::getFeatures( const QgsFeatureRequest& request )
|
|
{
|
|
if ( !mDataProvider )
|
|
return QgsFeatureIterator();
|
|
|
|
return QgsFeatureIterator( new QgsVectorLayerFeatureIterator( this, request ) );
|
|
}
|
|
|
|
|
|
bool QgsVectorLayer::addFeature( QgsFeature& f, bool alsoUpdateExtent )
|
|
{
|
|
Q_UNUSED( alsoUpdateExtent ); // TODO[MD]
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return false;
|
|
|
|
bool success = mEditBuffer->addFeature( f );
|
|
|
|
if ( success )
|
|
updateExtents();
|
|
|
|
return success;
|
|
}
|
|
|
|
bool QgsVectorLayer::updateFeature( QgsFeature &f )
|
|
{
|
|
QgsFeatureRequest req;
|
|
req.setFilterFid( f.id() );
|
|
if ( !f.geometry() )
|
|
req.setFlags( QgsFeatureRequest::NoGeometry );
|
|
if ( f.attributes().isEmpty() )
|
|
req.setSubsetOfAttributes( QgsAttributeList() );
|
|
|
|
QgsFeature current;
|
|
if ( !getFeatures( req ).nextFeature( current ) )
|
|
{
|
|
QgsDebugMsg( QString( "feature %1 could not be retrieved" ).arg( f.id() ) );
|
|
return false;
|
|
}
|
|
|
|
if ( f.geometry() && current.geometry() && f.geometry() != current.geometry() && !f.geometry()->isGeosEqual( *current.geometry() ) )
|
|
{
|
|
if ( !changeGeometry( f.id(), f.geometry() ) )
|
|
{
|
|
QgsDebugMsg( QString( "geometry of feature %1 could not be changed." ).arg( f.id() ) );
|
|
return false;
|
|
}
|
|
}
|
|
|
|
const QgsAttributes &fa = f.attributes();
|
|
const QgsAttributes &ca = current.attributes();
|
|
|
|
for ( int attr = 0; attr < fa.count(); ++attr )
|
|
{
|
|
if ( fa[attr] != ca[attr] )
|
|
{
|
|
if ( !changeAttributeValue( f.id(), attr, fa[attr] ) )
|
|
{
|
|
QgsDebugMsg( QString( "attribute %1 of feature %2 could not be changed." ).arg( attr ).arg( f.id() ) );
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
bool QgsVectorLayer::insertVertex( double x, double y, QgsFeatureId atFeatureId, int beforeVertex )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return false;
|
|
|
|
QgsVectorLayerEditUtils utils( this );
|
|
return utils.insertVertex( x, y, atFeatureId, beforeVertex );
|
|
}
|
|
|
|
|
|
bool QgsVectorLayer::moveVertex( double x, double y, QgsFeatureId atFeatureId, int atVertex )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return false;
|
|
|
|
QgsVectorLayerEditUtils utils( this );
|
|
return utils.moveVertex( x, y, atFeatureId, atVertex );
|
|
}
|
|
|
|
|
|
bool QgsVectorLayer::deleteVertex( QgsFeatureId atFeatureId, int atVertex )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return false;
|
|
|
|
QgsVectorLayerEditUtils utils( this );
|
|
return utils.deleteVertex( atFeatureId, atVertex );
|
|
}
|
|
|
|
|
|
bool QgsVectorLayer::deleteSelectedFeatures()
|
|
{
|
|
if ( !( mDataProvider->capabilities() & QgsVectorDataProvider::DeleteFeatures ) )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if ( !isEditable() )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if ( mSelectedFeatureIds.size() == 0 )
|
|
return true;
|
|
|
|
while ( mSelectedFeatureIds.size() > 0 )
|
|
{
|
|
QgsFeatureId fid = *mSelectedFeatureIds.begin();
|
|
deleteFeature( fid ); // removes from selection
|
|
}
|
|
|
|
// invalidate cache
|
|
setCacheImage( 0 );
|
|
triggerRepaint();
|
|
updateExtents();
|
|
|
|
return true;
|
|
}
|
|
|
|
int QgsVectorLayer::addRing( const QList<QgsPoint>& ring )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return 6;
|
|
|
|
QgsVectorLayerEditUtils utils( this );
|
|
return utils.addRing( ring );
|
|
}
|
|
|
|
int QgsVectorLayer::addPart( const QList<QgsPoint> &points )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return 7;
|
|
|
|
//number of selected features must be 1
|
|
|
|
if ( mSelectedFeatureIds.size() < 1 )
|
|
{
|
|
QgsDebugMsg( "Number of selected features <1" );
|
|
return 4;
|
|
}
|
|
else if ( mSelectedFeatureIds.size() > 1 )
|
|
{
|
|
QgsDebugMsg( "Number of selected features >1" );
|
|
return 5;
|
|
}
|
|
|
|
QgsVectorLayerEditUtils utils( this );
|
|
return utils.addPart( points, *mSelectedFeatureIds.constBegin() );
|
|
}
|
|
|
|
|
|
int QgsVectorLayer::translateFeature( QgsFeatureId featureId, double dx, double dy )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return -1;
|
|
|
|
QgsVectorLayerEditUtils utils( this );
|
|
return utils.translateFeature( featureId, dx, dy );
|
|
}
|
|
|
|
int QgsVectorLayer::splitParts( const QList<QgsPoint>& splitLine, bool topologicalEditing )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return -1;
|
|
|
|
QgsVectorLayerEditUtils utils( this );
|
|
return utils.splitParts( splitLine, topologicalEditing );
|
|
}
|
|
|
|
int QgsVectorLayer::splitFeatures( const QList<QgsPoint>& splitLine, bool topologicalEditing )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return -1;
|
|
|
|
QgsVectorLayerEditUtils utils( this );
|
|
return utils.splitFeatures( splitLine, topologicalEditing );
|
|
}
|
|
|
|
int QgsVectorLayer::removePolygonIntersections( QgsGeometry* geom, QgsFeatureIds ignoreFeatures )
|
|
{
|
|
if ( !hasGeometryType() )
|
|
return 1;
|
|
|
|
int returnValue = 0;
|
|
|
|
//first test if geom really has type polygon or multipolygon
|
|
if ( geom->type() != QGis::Polygon )
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
//get bounding box of geom
|
|
QgsRectangle geomBBox = geom->boundingBox();
|
|
|
|
//get list of features that intersect this bounding box
|
|
QgsFeatureIterator fit = getFeatures( QgsFeatureRequest()
|
|
.setFilterRect( geomBBox )
|
|
.setFlags( QgsFeatureRequest::ExactIntersect )
|
|
.setSubsetOfAttributes( QgsAttributeList() ) );
|
|
|
|
QgsFeature f;
|
|
while ( fit.nextFeature( f ) )
|
|
{
|
|
if ( ignoreFeatures.contains( f.id() ) )
|
|
{
|
|
continue;
|
|
}
|
|
|
|
//call geometry->makeDifference for each feature
|
|
QgsGeometry *currentGeom = f.geometry();
|
|
if ( currentGeom )
|
|
{
|
|
if ( geom->makeDifference( currentGeom ) != 0 )
|
|
{
|
|
returnValue = 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
return returnValue;
|
|
}
|
|
|
|
int QgsVectorLayer::addTopologicalPoints( QgsGeometry* geom )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return -1;
|
|
|
|
QgsVectorLayerEditUtils utils( this );
|
|
return utils.addTopologicalPoints( geom );
|
|
}
|
|
|
|
int QgsVectorLayer::addTopologicalPoints( const QgsPoint& p )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return -1;
|
|
|
|
QgsVectorLayerEditUtils utils( this );
|
|
return utils.addTopologicalPoints( p );
|
|
}
|
|
|
|
QgsLabel *QgsVectorLayer::label()
|
|
{
|
|
return mLabel;
|
|
}
|
|
|
|
const QgsLabel *QgsVectorLayer::label() const
|
|
{
|
|
return mLabel;
|
|
}
|
|
|
|
void QgsVectorLayer::enableLabels( bool on )
|
|
{
|
|
mLabelOn = on;
|
|
}
|
|
|
|
bool QgsVectorLayer::hasLabelsEnabled( void ) const
|
|
{
|
|
return mLabelOn;
|
|
}
|
|
|
|
bool QgsVectorLayer::startEditing()
|
|
{
|
|
if ( !mDataProvider )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// allow editing if provider supports any of the capabilities
|
|
if ( !( mDataProvider->capabilities() & QgsVectorDataProvider::EditingCapabilities ) )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if ( mReadOnly )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if ( mEditBuffer )
|
|
{
|
|
// editing already underway
|
|
return false;
|
|
}
|
|
|
|
mEditBuffer = new QgsVectorLayerEditBuffer( this );
|
|
// forward signals
|
|
connect( mEditBuffer, SIGNAL( layerModified() ), this, SLOT( invalidateSymbolCountedFlag() ) );
|
|
connect( mEditBuffer, SIGNAL( layerModified() ), this, SIGNAL( layerModified() ) ); // TODO[MD]: necessary?
|
|
//connect( mEditBuffer, SIGNAL( layerModified() ), this, SLOT( triggerRepaint() ) ); // TODO[MD]: works well?
|
|
connect( mEditBuffer, SIGNAL( featureAdded( QgsFeatureId ) ), this, SIGNAL( featureAdded( QgsFeatureId ) ) );
|
|
connect( mEditBuffer, SIGNAL( featureDeleted( QgsFeatureId ) ), this, SIGNAL( featureDeleted( QgsFeatureId ) ) );
|
|
connect( mEditBuffer, SIGNAL( geometryChanged( QgsFeatureId, QgsGeometry& ) ), this, SIGNAL( geometryChanged( QgsFeatureId, QgsGeometry& ) ) );
|
|
connect( mEditBuffer, SIGNAL( attributeValueChanged( QgsFeatureId, int, QVariant ) ), this, SIGNAL( attributeValueChanged( QgsFeatureId, int, QVariant ) ) );
|
|
connect( mEditBuffer, SIGNAL( attributeAdded( int ) ), this, SIGNAL( attributeAdded( int ) ) );
|
|
connect( mEditBuffer, SIGNAL( attributeDeleted( int ) ), this, SIGNAL( attributeDeleted( int ) ) );
|
|
connect( mEditBuffer, SIGNAL( committedFeaturesAdded( QString, QgsFeatureList ) ), this, SIGNAL( committedFeaturesAdded( QString, QgsFeatureList ) ) );
|
|
connect( mEditBuffer, SIGNAL( committedFeaturesRemoved( QString, QgsFeatureIds ) ), this, SIGNAL( committedFeaturesRemoved( QString, QgsFeatureIds ) ) );
|
|
|
|
updateFields();
|
|
|
|
emit editingStarted();
|
|
|
|
return true;
|
|
}
|
|
|
|
bool QgsVectorLayer::readXml( const QDomNode& layer_node )
|
|
{
|
|
QgsDebugMsg( QString( "Datasource in QgsVectorLayer::readXml: " ) + mDataSource.toLocal8Bit().data() );
|
|
|
|
//process provider key
|
|
QDomNode pkeyNode = layer_node.namedItem( "provider" );
|
|
|
|
if ( pkeyNode.isNull() )
|
|
{
|
|
mProviderKey = "";
|
|
}
|
|
else
|
|
{
|
|
QDomElement pkeyElt = pkeyNode.toElement();
|
|
mProviderKey = pkeyElt.text();
|
|
}
|
|
|
|
// determine type of vector layer
|
|
if ( ! mProviderKey.isNull() )
|
|
{
|
|
// if the provider string isn't empty, then we successfully
|
|
// got the stored provider
|
|
}
|
|
else if ( mDataSource.contains( "dbname=" ) )
|
|
{
|
|
mProviderKey = "postgres";
|
|
}
|
|
else
|
|
{
|
|
mProviderKey = "ogr";
|
|
}
|
|
|
|
if ( ! setDataProvider( mProviderKey ) )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
QDomElement pkeyElem = pkeyNode.toElement();
|
|
if ( !pkeyElem.isNull() )
|
|
{
|
|
QString encodingString = pkeyElem.attribute( "encoding" );
|
|
if ( !encodingString.isEmpty() )
|
|
{
|
|
mDataProvider->setEncoding( encodingString );
|
|
}
|
|
}
|
|
|
|
//load vector joins
|
|
if ( !mJoinBuffer )
|
|
{
|
|
mJoinBuffer = new QgsVectorLayerJoinBuffer();
|
|
}
|
|
mJoinBuffer->readXml( layer_node );
|
|
|
|
updateFields();
|
|
connect( QgsMapLayerRegistry::instance(), SIGNAL( layerWillBeRemoved( QString ) ), this, SLOT( checkJoinLayerRemove( QString ) ) );
|
|
|
|
QDomNode prevExpNode = layer_node.namedItem( "previewExpression" );
|
|
|
|
if ( prevExpNode.isNull() )
|
|
{
|
|
mDisplayExpression = "";
|
|
}
|
|
else
|
|
{
|
|
QDomElement prevExpElem = prevExpNode.toElement();
|
|
mDisplayExpression = prevExpElem.text();
|
|
}
|
|
|
|
QString errorMsg;
|
|
if ( !readSymbology( layer_node, errorMsg ) )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
return mValid; // should be true if read successfully
|
|
|
|
} // void QgsVectorLayer::readXml
|
|
|
|
|
|
bool QgsVectorLayer::setDataProvider( QString const & provider )
|
|
{
|
|
// XXX should I check for and possibly delete any pre-existing providers?
|
|
// XXX How often will that scenario occur?
|
|
|
|
mProviderKey = provider; // XXX is this necessary? Usually already set
|
|
// XXX when execution gets here.
|
|
|
|
//XXX - This was a dynamic cast but that kills the Windows
|
|
// version big-time with an abnormal termination error
|
|
mDataProvider =
|
|
( QgsVectorDataProvider* )( QgsProviderRegistry::instance()->provider( provider, mDataSource ) );
|
|
|
|
if ( mDataProvider )
|
|
{
|
|
QgsDebugMsg( "Instantiated the data provider plugin" );
|
|
|
|
mValid = mDataProvider->isValid();
|
|
if ( mValid )
|
|
{
|
|
|
|
// TODO: Check if the provider has the capability to send fullExtentCalculated
|
|
connect( mDataProvider, SIGNAL( fullExtentCalculated() ), this, SLOT( updateExtents() ) );
|
|
|
|
// get the extent
|
|
QgsRectangle mbr = mDataProvider->extent();
|
|
|
|
// show the extent
|
|
QString s = mbr.toString();
|
|
QgsDebugMsg( "Extent of layer: " + s );
|
|
// store the extent
|
|
setExtent( mbr );
|
|
|
|
// get and store the feature type
|
|
mWkbType = mDataProvider->geometryType();
|
|
|
|
mJoinBuffer = new QgsVectorLayerJoinBuffer();
|
|
|
|
updateFields();
|
|
|
|
// look at the fields in the layer and set the primary
|
|
// display field using some real fuzzy logic
|
|
setDisplayField();
|
|
|
|
if ( mProviderKey == "postgres" )
|
|
{
|
|
QgsDebugMsg( "Beautifying layer name " + name() );
|
|
|
|
// adjust the display name for postgres layers
|
|
QRegExp reg( "\"[^\"]+\"\\.\"([^\"]+)\"( \\([^)]+\\))?" );
|
|
if ( reg.indexIn( name() ) >= 0 )
|
|
{
|
|
QStringList stuff = reg.capturedTexts();
|
|
QString lName = stuff[1];
|
|
|
|
const QMap<QString, QgsMapLayer*> &layers = QgsMapLayerRegistry::instance()->mapLayers();
|
|
|
|
QMap<QString, QgsMapLayer*>::const_iterator it;
|
|
for ( it = layers.constBegin(); it != layers.constEnd() && ( *it )->name() != lName; it++ )
|
|
;
|
|
|
|
if ( it != layers.constEnd() && stuff.size() > 2 )
|
|
{
|
|
lName += "." + stuff[2].mid( 2, stuff[2].length() - 3 );
|
|
}
|
|
|
|
if ( !lName.isEmpty() )
|
|
setLayerName( lName );
|
|
}
|
|
|
|
QgsDebugMsg( "Beautified layer name " + name() );
|
|
|
|
// deal with unnecessary schema qualification to make v.in.ogr happy
|
|
mDataSource = mDataProvider->dataSourceUri();
|
|
}
|
|
else if ( mProviderKey == "osm" )
|
|
{
|
|
// make sure that the "observer" has been removed from URI to avoid crashes
|
|
mDataSource = mDataProvider->dataSourceUri();
|
|
}
|
|
else if ( provider == "ogr" )
|
|
{
|
|
// make sure that the /vsigzip or /vsizip is added to uri, if applicable
|
|
mDataSource = mDataProvider->dataSourceUri();
|
|
if ( mDataSource.right( 10 ) == "|layerid=0" )
|
|
mDataSource.chop( 10 );
|
|
}
|
|
|
|
// label
|
|
mLabel = new QgsLabel( mDataProvider->fields() );
|
|
mLabelOn = false;
|
|
}
|
|
else
|
|
{
|
|
QgsDebugMsg( "Invalid provider plugin " + QString( mDataSource.toUtf8() ) );
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
QgsDebugMsg( " unable to get data provider" );
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
|
|
} // QgsVectorLayer:: setDataProvider
|
|
|
|
|
|
|
|
|
|
/* virtual */
|
|
bool QgsVectorLayer::writeXml( QDomNode & layer_node,
|
|
QDomDocument & document )
|
|
{
|
|
// first get the layer element so that we can append the type attribute
|
|
|
|
QDomElement mapLayerNode = layer_node.toElement();
|
|
|
|
if ( mapLayerNode.isNull() || ( "maplayer" != mapLayerNode.nodeName() ) )
|
|
{
|
|
QgsDebugMsg( "can't find <maplayer>" );
|
|
return false;
|
|
}
|
|
|
|
mapLayerNode.setAttribute( "type", "vector" );
|
|
|
|
// set the geometry type
|
|
mapLayerNode.setAttribute( "geometry", QGis::vectorGeometryType( geometryType() ) );
|
|
|
|
// add provider node
|
|
if ( mDataProvider )
|
|
{
|
|
QDomElement provider = document.createElement( "provider" );
|
|
provider.setAttribute( "encoding", mDataProvider->encoding() );
|
|
QDomText providerText = document.createTextNode( providerType() );
|
|
provider.appendChild( providerText );
|
|
layer_node.appendChild( provider );
|
|
}
|
|
|
|
// save preview expression
|
|
QDomElement prevExpElem = document.createElement( "previewExpression" );
|
|
QDomText prevExpText = document.createTextNode( mDisplayExpression );
|
|
prevExpElem.appendChild( prevExpText );
|
|
layer_node.appendChild( prevExpElem );
|
|
|
|
//save joins
|
|
mJoinBuffer->writeXml( layer_node, document );
|
|
|
|
// renderer specific settings
|
|
QString errorMsg;
|
|
return writeSymbology( layer_node, document, errorMsg );
|
|
} // bool QgsVectorLayer::writeXml
|
|
|
|
bool QgsVectorLayer::readSymbology( const QDomNode& node, QString& errorMessage )
|
|
{
|
|
Q_UNUSED( errorMessage );
|
|
if ( hasGeometryType() )
|
|
{
|
|
// try renderer v2 first
|
|
QDomElement rendererElement = node.firstChildElement( RENDERER_TAG_NAME );
|
|
if ( !rendererElement.isNull() )
|
|
{
|
|
QgsFeatureRendererV2* r = QgsFeatureRendererV2::load( rendererElement );
|
|
if ( !r )
|
|
return false;
|
|
|
|
setRendererV2( r );
|
|
}
|
|
else
|
|
{
|
|
QgsFeatureRendererV2* r = QgsSymbologyV2Conversion::readOldRenderer( node, geometryType() );
|
|
if ( !r )
|
|
r = QgsFeatureRendererV2::defaultRenderer( geometryType() );
|
|
|
|
setRendererV2( r );
|
|
}
|
|
|
|
// get and set the display field if it exists.
|
|
QDomNode displayFieldNode = node.namedItem( "displayfield" );
|
|
if ( !displayFieldNode.isNull() )
|
|
{
|
|
QDomElement e = displayFieldNode.toElement();
|
|
setDisplayField( e.text() );
|
|
}
|
|
|
|
// get and set the blend mode if it exists
|
|
QDomNode blendModeNode = node.namedItem( "blendMode" );
|
|
if ( !blendModeNode.isNull() )
|
|
{
|
|
QDomElement e = blendModeNode.toElement();
|
|
setBlendMode( QgsMapRenderer::getCompositionMode(( QgsMapRenderer::BlendMode ) e.text().toInt() ) );
|
|
}
|
|
|
|
// get and set the feature blend mode if it exists
|
|
QDomNode featureBlendModeNode = node.namedItem( "featureBlendMode" );
|
|
if ( !featureBlendModeNode.isNull() )
|
|
{
|
|
QDomElement e = featureBlendModeNode.toElement();
|
|
setFeatureBlendMode( QgsMapRenderer::getCompositionMode(( QgsMapRenderer::BlendMode ) e.text().toInt() ) );
|
|
}
|
|
|
|
// get and set the layer transparency if it exists
|
|
QDomNode layerTransparencyNode = node.namedItem( "layerTransparency" );
|
|
if ( !layerTransparencyNode.isNull() )
|
|
{
|
|
QDomElement e = layerTransparencyNode.toElement();
|
|
setLayerTransparency( e.text().toInt() );
|
|
}
|
|
|
|
// use scale dependent visibility flag
|
|
QDomElement e = node.toElement();
|
|
mLabel->setScaleBasedVisibility( e.attribute( "scaleBasedLabelVisibilityFlag", "0" ) == "1" );
|
|
mLabel->setMinScale( e.attribute( "minLabelScale", "1" ).toFloat() );
|
|
mLabel->setMaxScale( e.attribute( "maxLabelScale", "100000000" ).toFloat() );
|
|
|
|
//also restore custom properties (for labeling-ng)
|
|
readCustomProperties( node, "labeling" );
|
|
|
|
// Test if labeling is on or off
|
|
QDomNode labelnode = node.namedItem( "label" );
|
|
QDomElement element = labelnode.toElement();
|
|
int hasLabelsEnabled = element.text().toInt();
|
|
if ( hasLabelsEnabled < 1 )
|
|
{
|
|
enableLabels( false );
|
|
}
|
|
else
|
|
{
|
|
enableLabels( true );
|
|
}
|
|
|
|
QDomNode labelattributesnode = node.namedItem( "labelattributes" );
|
|
|
|
if ( !labelattributesnode.isNull() )
|
|
{
|
|
QgsDebugMsg( "calling readXML" );
|
|
mLabel->readXML( labelattributesnode );
|
|
}
|
|
|
|
//diagram renderer and diagram layer settings
|
|
delete mDiagramRenderer; mDiagramRenderer = 0;
|
|
QDomElement singleCatDiagramElem = node.firstChildElement( "SingleCategoryDiagramRenderer" );
|
|
if ( !singleCatDiagramElem.isNull() )
|
|
{
|
|
mDiagramRenderer = new QgsSingleCategoryDiagramRenderer();
|
|
mDiagramRenderer->readXML( singleCatDiagramElem, this );
|
|
}
|
|
QDomElement linearDiagramElem = node.firstChildElement( "LinearlyInterpolatedDiagramRenderer" );
|
|
if ( !linearDiagramElem.isNull() )
|
|
{
|
|
mDiagramRenderer = new QgsLinearlyInterpolatedDiagramRenderer();
|
|
mDiagramRenderer->readXML( linearDiagramElem, this );
|
|
}
|
|
|
|
if ( mDiagramRenderer )
|
|
{
|
|
QDomElement diagramSettingsElem = node.firstChildElement( "DiagramLayerSettings" );
|
|
if ( !diagramSettingsElem.isNull() )
|
|
{
|
|
mDiagramLayerSettings = new QgsDiagramLayerSettings();
|
|
mDiagramLayerSettings->readXML( diagramSettingsElem, this );
|
|
}
|
|
}
|
|
}
|
|
|
|
// process the attribute actions
|
|
mActions->readXML( node );
|
|
|
|
mEditTypes.clear();
|
|
QDomNode editTypesNode = node.namedItem( "edittypes" );
|
|
if ( !editTypesNode.isNull() )
|
|
{
|
|
QDomNodeList editTypeNodes = editTypesNode.childNodes();
|
|
|
|
for ( int i = 0; i < editTypeNodes.size(); i++ )
|
|
{
|
|
QDomNode editTypeNode = editTypeNodes.at( i );
|
|
QDomElement editTypeElement = editTypeNode.toElement();
|
|
|
|
QString name = editTypeElement.attribute( "name" );
|
|
if ( fieldNameIndex( name ) < -1 )
|
|
continue;
|
|
|
|
EditType editType = ( EditType ) editTypeElement.attribute( "type" ).toInt();
|
|
mEditTypes.insert( name, editType );
|
|
|
|
int editable = editTypeElement.attribute( "editable" , "1" ).toInt();
|
|
mFieldEditables.insert( name, editable == 1 );
|
|
|
|
int labelOnTop = editTypeElement.attribute( "labelontop" , "0" ).toInt();
|
|
mLabelOnTop.insert( name, labelOnTop == 1 );
|
|
|
|
switch ( editType )
|
|
{
|
|
case ValueMap:
|
|
if ( editTypeNode.hasChildNodes() )
|
|
{
|
|
mValueMaps.insert( name, QMap<QString, QVariant>() );
|
|
|
|
QDomNodeList valueMapNodes = editTypeNode.childNodes();
|
|
for ( int j = 0; j < valueMapNodes.size(); j++ )
|
|
{
|
|
QDomElement value = valueMapNodes.at( j ).toElement();
|
|
mValueMaps[ name ].insert( value.attribute( "key" ), value.attribute( "value" ) );
|
|
}
|
|
}
|
|
break;
|
|
|
|
case EditRange:
|
|
case SliderRange:
|
|
case DialRange:
|
|
{
|
|
QVariant min = editTypeElement.attribute( "min" );
|
|
QVariant max = editTypeElement.attribute( "max" );
|
|
QVariant step = editTypeElement.attribute( "step" );
|
|
|
|
mRanges[ name ] = RangeData( min, max, step );
|
|
}
|
|
break;
|
|
|
|
case CheckBox:
|
|
mCheckedStates[ name ] = QPair<QString, QString>( editTypeElement.attribute( "checked" ), editTypeElement.attribute( "unchecked" ) );
|
|
break;
|
|
|
|
case ValueRelation:
|
|
{
|
|
QString id = editTypeElement.attribute( "layer" );
|
|
QString key = editTypeElement.attribute( "key" );
|
|
QString value = editTypeElement.attribute( "value" );
|
|
bool allowNull = editTypeElement.attribute( "allowNull" ) == "true";
|
|
bool orderByValue = editTypeElement.attribute( "orderByValue" ) == "true";
|
|
bool allowMulti = editTypeElement.attribute( "allowMulti", "false" ) == "true";
|
|
|
|
QString filterExpression;
|
|
if ( editTypeElement.hasAttribute( "filterAttributeColumn" ) &&
|
|
editTypeElement.hasAttribute( "filterAttributeValue" ) )
|
|
{
|
|
filterExpression = QString( "\"%1\"='%2'" )
|
|
.arg( editTypeElement.attribute( "filterAttributeColumn" ) )
|
|
.arg( editTypeElement.attribute( "filterAttributeValue" ) );
|
|
}
|
|
else
|
|
{
|
|
filterExpression = editTypeElement.attribute( "filterExpression", QString::null );
|
|
}
|
|
|
|
mValueRelations[ name ] = ValueRelationData( id, key, value, allowNull, orderByValue, allowMulti, filterExpression );
|
|
}
|
|
break;
|
|
|
|
case Calendar:
|
|
mDateFormats[ name ] = editTypeElement.attribute( "dateFormat" );
|
|
break;
|
|
|
|
case Photo:
|
|
case WebView:
|
|
mWidgetSize[ name ] = QSize( editTypeElement.attribute( "widgetWidth" ).toInt(), editTypeElement.attribute( "widgetHeight" ).toInt() );
|
|
break;
|
|
|
|
case Classification:
|
|
case FileName:
|
|
case Immutable:
|
|
case Hidden:
|
|
case LineEdit:
|
|
case TextEdit:
|
|
case Enumeration:
|
|
case UniqueValues:
|
|
case UniqueValuesEditable:
|
|
case UuidGenerator:
|
|
case Color:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
QDomNode editFormNode = node.namedItem( "editform" );
|
|
if ( !editFormNode.isNull() )
|
|
{
|
|
QDomElement e = editFormNode.toElement();
|
|
mEditForm = QgsProject::instance()->readPath( e.text() );
|
|
}
|
|
|
|
QDomNode editFormInitNode = node.namedItem( "editforminit" );
|
|
if ( !editFormInitNode.isNull() )
|
|
{
|
|
mEditFormInit = editFormInitNode.toElement().text();
|
|
}
|
|
|
|
QDomNode fFSuppNode = node.namedItem( "featformsuppress" );
|
|
if ( fFSuppNode.isNull() )
|
|
{
|
|
mFeatureFormSuppress = SuppressDefault;
|
|
}
|
|
else
|
|
{
|
|
QDomElement e = fFSuppNode.toElement();
|
|
mFeatureFormSuppress = ( QgsVectorLayer::FeatureFormSuppress )e.text().toInt();
|
|
}
|
|
|
|
QDomNode annotationFormNode = node.namedItem( "annotationform" );
|
|
if ( !annotationFormNode.isNull() )
|
|
{
|
|
QDomElement e = annotationFormNode.toElement();
|
|
mAnnotationForm = QgsProject::instance()->readPath( e.text() );
|
|
}
|
|
|
|
mAttributeAliasMap.clear();
|
|
QDomNode aliasesNode = node.namedItem( "aliases" );
|
|
if ( !aliasesNode.isNull() )
|
|
{
|
|
QDomElement aliasElem;
|
|
QString name;
|
|
|
|
QDomNodeList aliasNodeList = aliasesNode.toElement().elementsByTagName( "alias" );
|
|
for ( int i = 0; i < aliasNodeList.size(); ++i )
|
|
{
|
|
aliasElem = aliasNodeList.at( i ).toElement();
|
|
|
|
QString field;
|
|
if ( aliasElem.hasAttribute( "field" ) )
|
|
{
|
|
field = aliasElem.attribute( "field" );
|
|
}
|
|
else
|
|
{
|
|
int index = aliasElem.attribute( "index" ).toInt();
|
|
|
|
if ( index >= 0 && index < pendingFields().count() )
|
|
field = pendingFields()[ index ].name();
|
|
}
|
|
|
|
mAttributeAliasMap.insert( field, aliasElem.attribute( "name" ) );
|
|
}
|
|
}
|
|
|
|
// tab display
|
|
QDomNode editorLayoutNode = node.namedItem( "editorlayout" );
|
|
if ( editorLayoutNode.isNull() )
|
|
{
|
|
mEditorLayout = GeneratedLayout;
|
|
}
|
|
else
|
|
{
|
|
if ( editorLayoutNode.toElement().text() == "uifilelayout" )
|
|
{
|
|
mEditorLayout = UiFileLayout;
|
|
}
|
|
else if ( editorLayoutNode.toElement().text() == "tablayout" )
|
|
{
|
|
mEditorLayout = TabLayout;
|
|
}
|
|
else
|
|
{
|
|
mEditorLayout = GeneratedLayout;
|
|
}
|
|
}
|
|
|
|
//Attributes excluded from WMS and WFS
|
|
mExcludeAttributesWMS.clear();
|
|
QDomNode excludeWMSNode = node.namedItem( "excludeAttributesWMS" );
|
|
if ( !excludeWMSNode.isNull() )
|
|
{
|
|
QDomNodeList attributeNodeList = excludeWMSNode.toElement().elementsByTagName( "attribute" );
|
|
for ( int i = 0; i < attributeNodeList.size(); ++i )
|
|
{
|
|
mExcludeAttributesWMS.insert( attributeNodeList.at( i ).toElement().text() );
|
|
}
|
|
}
|
|
|
|
mExcludeAttributesWFS.clear();
|
|
QDomNode excludeWFSNode = node.namedItem( "excludeAttributesWFS" );
|
|
if ( !excludeWFSNode.isNull() )
|
|
{
|
|
QDomNodeList attributeNodeList = excludeWFSNode.toElement().elementsByTagName( "attribute" );
|
|
for ( int i = 0; i < attributeNodeList.size(); ++i )
|
|
{
|
|
mExcludeAttributesWFS.insert( attributeNodeList.at( i ).toElement().text() );
|
|
}
|
|
}
|
|
|
|
// tabs and groups display info
|
|
mAttributeEditorElements.clear();
|
|
QDomNode attributeEditorFormNode = node.namedItem( "attributeEditorForm" );
|
|
QDomNodeList attributeEditorFormNodeList = attributeEditorFormNode.toElement().childNodes();
|
|
|
|
for ( int i = 0; i < attributeEditorFormNodeList.size(); i++ )
|
|
{
|
|
QDomElement elem = attributeEditorFormNodeList.at( i ).toElement();
|
|
|
|
QgsAttributeEditorElement *attributeEditorWidget = attributeEditorElementFromDomElement( elem, this );
|
|
mAttributeEditorElements.append( attributeEditorWidget );
|
|
}
|
|
return true;
|
|
}
|
|
|
|
QgsAttributeEditorElement* QgsVectorLayer::attributeEditorElementFromDomElement( QDomElement &elem, QObject* parent )
|
|
{
|
|
QgsAttributeEditorElement* newElement = NULL;
|
|
|
|
if ( elem.tagName() == "attributeEditorContainer" )
|
|
{
|
|
QgsAttributeEditorContainer* container = new QgsAttributeEditorContainer( elem.attribute( "name" ), parent );
|
|
|
|
QDomNodeList childNodeList = elem.childNodes();
|
|
|
|
for ( int i = 0; i < childNodeList.size(); i++ )
|
|
{
|
|
QDomElement childElem = childNodeList.at( i ).toElement();
|
|
QgsAttributeEditorElement* myElem = attributeEditorElementFromDomElement( childElem, container );
|
|
container->addChildElement( myElem );
|
|
}
|
|
|
|
newElement = container;
|
|
}
|
|
else if ( elem.tagName() == "attributeEditorField" )
|
|
{
|
|
QString name = elem.attribute( "name" );
|
|
int idx = *( dataProvider()->fieldNameMap() ).find( name );
|
|
newElement = new QgsAttributeEditorField( name, idx, parent );
|
|
}
|
|
|
|
return newElement;
|
|
}
|
|
|
|
bool QgsVectorLayer::writeSymbology( QDomNode& node, QDomDocument& doc, QString& errorMessage ) const
|
|
{
|
|
Q_UNUSED( errorMessage );
|
|
QDomElement mapLayerNode = node.toElement();
|
|
|
|
if ( hasGeometryType() )
|
|
{
|
|
QDomElement rendererElement = mRendererV2->save( doc );
|
|
node.appendChild( rendererElement );
|
|
|
|
// use scale dependent visibility flag
|
|
mapLayerNode.setAttribute( "scaleBasedLabelVisibilityFlag", mLabel->scaleBasedVisibility() ? 1 : 0 );
|
|
mapLayerNode.setAttribute( "minLabelScale", QString::number( mLabel->minScale() ) );
|
|
mapLayerNode.setAttribute( "maxLabelScale", QString::number( mLabel->maxScale() ) );
|
|
|
|
//save customproperties (for labeling ng)
|
|
writeCustomProperties( node, doc );
|
|
|
|
// add the blend mode field
|
|
QDomElement blendModeElem = doc.createElement( "blendMode" );
|
|
QDomText blendModeText = doc.createTextNode( QString::number( QgsMapRenderer::getBlendModeEnum( blendMode() ) ) );
|
|
blendModeElem.appendChild( blendModeText );
|
|
node.appendChild( blendModeElem );
|
|
|
|
// add the feature blend mode field
|
|
QDomElement featureBlendModeElem = doc.createElement( "featureBlendMode" );
|
|
QDomText featureBlendModeText = doc.createTextNode( QString::number( QgsMapRenderer::getBlendModeEnum( featureBlendMode() ) ) );
|
|
featureBlendModeElem.appendChild( featureBlendModeText );
|
|
node.appendChild( featureBlendModeElem );
|
|
|
|
// add the layer transparency
|
|
QDomElement layerTransparencyElem = doc.createElement( "layerTransparency" );
|
|
QDomText layerTransparencyText = doc.createTextNode( QString::number( layerTransparency() ) );
|
|
layerTransparencyElem.appendChild( layerTransparencyText );
|
|
node.appendChild( layerTransparencyElem );
|
|
|
|
// add the display field
|
|
QDomElement dField = doc.createElement( "displayfield" );
|
|
QDomText dFieldText = doc.createTextNode( displayField() );
|
|
dField.appendChild( dFieldText );
|
|
node.appendChild( dField );
|
|
|
|
// add label node
|
|
QDomElement labelElem = doc.createElement( "label" );
|
|
QDomText labelText = doc.createTextNode( "" );
|
|
|
|
if ( hasLabelsEnabled() )
|
|
{
|
|
labelText.setData( "1" );
|
|
}
|
|
else
|
|
{
|
|
labelText.setData( "0" );
|
|
}
|
|
labelElem.appendChild( labelText );
|
|
|
|
node.appendChild( labelElem );
|
|
|
|
// Now we get to do all that all over again for QgsLabel
|
|
|
|
QString fieldname = mLabel->labelField( QgsLabel::Text );
|
|
if ( fieldname != "" )
|
|
{
|
|
dField = doc.createElement( "labelfield" );
|
|
dFieldText = doc.createTextNode( fieldname );
|
|
dField.appendChild( dFieldText );
|
|
node.appendChild( dField );
|
|
}
|
|
|
|
mLabel->writeXML( node, doc );
|
|
|
|
if ( mDiagramRenderer )
|
|
{
|
|
mDiagramRenderer->writeXML( mapLayerNode, doc, this );
|
|
if ( mDiagramLayerSettings )
|
|
mDiagramLayerSettings->writeXML( mapLayerNode, doc, this );
|
|
}
|
|
}
|
|
|
|
//edit types
|
|
if ( mEditTypes.size() > 0 )
|
|
{
|
|
QDomElement editTypesElement = doc.createElement( "edittypes" );
|
|
|
|
for ( QMap<QString, EditType>::const_iterator it = mEditTypes.begin(); it != mEditTypes.end(); ++it )
|
|
{
|
|
QDomElement editTypeElement = doc.createElement( "edittype" );
|
|
editTypeElement.setAttribute( "name", it.key() );
|
|
editTypeElement.setAttribute( "type", it.value() );
|
|
editTypeElement.setAttribute( "editable", mFieldEditables[ it.key()] ? 1 : 0 );
|
|
editTypeElement.setAttribute( "labelontop", mLabelOnTop[ it.key()] ? 1 : 0 );
|
|
|
|
switch (( EditType ) it.value() )
|
|
{
|
|
case ValueMap:
|
|
if ( mValueMaps.contains( it.key() ) )
|
|
{
|
|
const QMap<QString, QVariant> &map = mValueMaps[ it.key()];
|
|
|
|
for ( QMap<QString, QVariant>::const_iterator vmit = map.begin(); vmit != map.end(); vmit++ )
|
|
{
|
|
QDomElement value = doc.createElement( "valuepair" );
|
|
value.setAttribute( "key", vmit.key() );
|
|
value.setAttribute( "value", vmit.value().toString() );
|
|
editTypeElement.appendChild( value );
|
|
}
|
|
}
|
|
break;
|
|
|
|
case EditRange:
|
|
case SliderRange:
|
|
case DialRange:
|
|
if ( mRanges.contains( it.key() ) )
|
|
{
|
|
editTypeElement.setAttribute( "min", mRanges[ it.key()].mMin.toString() );
|
|
editTypeElement.setAttribute( "max", mRanges[ it.key()].mMax.toString() );
|
|
editTypeElement.setAttribute( "step", mRanges[ it.key()].mStep.toString() );
|
|
}
|
|
break;
|
|
|
|
case CheckBox:
|
|
if ( mCheckedStates.contains( it.key() ) )
|
|
{
|
|
editTypeElement.setAttribute( "checked", mCheckedStates[ it.key()].first );
|
|
editTypeElement.setAttribute( "unchecked", mCheckedStates[ it.key()].second );
|
|
}
|
|
break;
|
|
|
|
case ValueRelation:
|
|
if ( mValueRelations.contains( it.key() ) )
|
|
{
|
|
const ValueRelationData &data = mValueRelations[ it.key()];
|
|
editTypeElement.setAttribute( "layer", data.mLayer );
|
|
editTypeElement.setAttribute( "key", data.mKey );
|
|
editTypeElement.setAttribute( "value", data.mValue );
|
|
editTypeElement.setAttribute( "allowNull", data.mAllowNull ? "true" : "false" );
|
|
editTypeElement.setAttribute( "orderByValue", data.mOrderByValue ? "true" : "false" );
|
|
editTypeElement.setAttribute( "allowMulti", data.mAllowMulti ? "true" : "false" );
|
|
if ( !data.mFilterExpression.isNull() )
|
|
editTypeElement.setAttribute( "filterExpression", data.mFilterExpression );
|
|
}
|
|
break;
|
|
|
|
case Calendar:
|
|
editTypeElement.setAttribute( "dateFormat", mDateFormats[ it.key()] );
|
|
break;
|
|
|
|
case Photo:
|
|
case WebView:
|
|
editTypeElement.setAttribute( "widgetWidth", mWidgetSize[ it.key()].width() );
|
|
editTypeElement.setAttribute( "widgetHeight", mWidgetSize[ it.key()].height() );
|
|
break;
|
|
|
|
case LineEdit:
|
|
case UniqueValues:
|
|
case UniqueValuesEditable:
|
|
case Classification:
|
|
case FileName:
|
|
case Hidden:
|
|
case TextEdit:
|
|
case Enumeration:
|
|
case Immutable:
|
|
case UuidGenerator:
|
|
case Color:
|
|
break;
|
|
}
|
|
|
|
editTypesElement.appendChild( editTypeElement );
|
|
}
|
|
|
|
node.appendChild( editTypesElement );
|
|
}
|
|
|
|
QDomElement efField = doc.createElement( "editform" );
|
|
QDomText efText = doc.createTextNode( QgsProject::instance()->writePath( mEditForm ) );
|
|
efField.appendChild( efText );
|
|
node.appendChild( efField );
|
|
|
|
QDomElement efiField = doc.createElement( "editforminit" );
|
|
QDomText efiText = doc.createTextNode( mEditFormInit );
|
|
efiField.appendChild( efiText );
|
|
node.appendChild( efiField );
|
|
|
|
QDomElement fFSuppElem = doc.createElement( "featformsuppress" );
|
|
QDomText fFSuppText = doc.createTextNode( QString::number( featureFormSuppress() ) );
|
|
fFSuppElem.appendChild( fFSuppText );
|
|
node.appendChild( fFSuppElem );
|
|
|
|
QDomElement afField = doc.createElement( "annotationform" );
|
|
QDomText afText = doc.createTextNode( QgsProject::instance()->writePath( mAnnotationForm ) );
|
|
afField.appendChild( afText );
|
|
node.appendChild( afField );
|
|
|
|
// tab display
|
|
QDomElement editorLayoutElem = doc.createElement( "editorlayout" );
|
|
switch ( mEditorLayout )
|
|
{
|
|
case UiFileLayout:
|
|
editorLayoutElem.appendChild( doc.createTextNode( "uifilelayout" ) );
|
|
break;
|
|
|
|
case TabLayout:
|
|
editorLayoutElem.appendChild( doc.createTextNode( "tablayout" ) );
|
|
break;
|
|
|
|
case GeneratedLayout:
|
|
default:
|
|
editorLayoutElem.appendChild( doc.createTextNode( "generatedlayout" ) );
|
|
break;
|
|
}
|
|
|
|
node.appendChild( editorLayoutElem );
|
|
|
|
//attribute aliases
|
|
if ( mAttributeAliasMap.size() > 0 )
|
|
{
|
|
QDomElement aliasElem = doc.createElement( "aliases" );
|
|
QMap<QString, QString>::const_iterator a_it = mAttributeAliasMap.constBegin();
|
|
for ( ; a_it != mAttributeAliasMap.constEnd(); ++a_it )
|
|
{
|
|
int idx = fieldNameIndex( a_it.key() );
|
|
if ( idx < 0 )
|
|
continue;
|
|
|
|
QDomElement aliasEntryElem = doc.createElement( "alias" );
|
|
aliasEntryElem.setAttribute( "field", a_it.key() );
|
|
aliasEntryElem.setAttribute( "index", idx );
|
|
aliasEntryElem.setAttribute( "name", a_it.value() );
|
|
aliasElem.appendChild( aliasEntryElem );
|
|
}
|
|
node.appendChild( aliasElem );
|
|
}
|
|
|
|
//exclude attributes WMS
|
|
QDomElement excludeWMSElem = doc.createElement( "excludeAttributesWMS" );
|
|
QSet<QString>::const_iterator attWMSIt = mExcludeAttributesWMS.constBegin();
|
|
for ( ; attWMSIt != mExcludeAttributesWMS.constEnd(); ++attWMSIt )
|
|
{
|
|
QDomElement attrElem = doc.createElement( "attribute" );
|
|
QDomText attrText = doc.createTextNode( *attWMSIt );
|
|
attrElem.appendChild( attrText );
|
|
excludeWMSElem.appendChild( attrElem );
|
|
}
|
|
node.appendChild( excludeWMSElem );
|
|
|
|
//exclude attributes WFS
|
|
QDomElement excludeWFSElem = doc.createElement( "excludeAttributesWFS" );
|
|
QSet<QString>::const_iterator attWFSIt = mExcludeAttributesWFS.constBegin();
|
|
for ( ; attWFSIt != mExcludeAttributesWFS.constEnd(); ++attWFSIt )
|
|
{
|
|
QDomElement attrElem = doc.createElement( "attribute" );
|
|
QDomText attrText = doc.createTextNode( *attWFSIt );
|
|
attrElem.appendChild( attrText );
|
|
excludeWFSElem.appendChild( attrElem );
|
|
}
|
|
node.appendChild( excludeWFSElem );
|
|
|
|
// tabs and groups of edit form
|
|
if ( mAttributeEditorElements.size() > 0 )
|
|
{
|
|
QDomElement tabsElem = doc.createElement( "attributeEditorForm" );
|
|
|
|
for ( QList< QgsAttributeEditorElement* >::const_iterator it = mAttributeEditorElements.begin(); it != mAttributeEditorElements.end(); it++ )
|
|
{
|
|
QDomElement attributeEditorWidgetElem = ( *it )->toDomElement( doc );
|
|
tabsElem.appendChild( attributeEditorWidgetElem );
|
|
}
|
|
|
|
node.appendChild( tabsElem );
|
|
}
|
|
|
|
// add attribute actions
|
|
mActions->writeXML( node, doc );
|
|
|
|
return true;
|
|
}
|
|
|
|
bool QgsVectorLayer::readSld( const QDomNode& node, QString& errorMessage )
|
|
{
|
|
// get the Name element
|
|
QDomElement nameElem = node.firstChildElement( "Name" );
|
|
if ( nameElem.isNull() )
|
|
{
|
|
errorMessage = "Warning: Name element not found within NamedLayer while it's required.";
|
|
}
|
|
|
|
if ( hasGeometryType() )
|
|
{
|
|
QgsFeatureRendererV2* r = QgsFeatureRendererV2::loadSld( node, geometryType(), errorMessage );
|
|
if ( !r )
|
|
return false;
|
|
|
|
setRendererV2( r );
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
bool QgsVectorLayer::writeSld( QDomNode& node, QDomDocument& doc, QString& errorMessage ) const
|
|
{
|
|
Q_UNUSED( errorMessage );
|
|
|
|
// store the Name element
|
|
QDomElement nameNode = doc.createElement( "se:Name" );
|
|
nameNode.appendChild( doc.createTextNode( name() ) );
|
|
node.appendChild( nameNode );
|
|
|
|
if ( hasGeometryType() )
|
|
{
|
|
node.appendChild( mRendererV2->writeSld( doc, *this ) );
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
bool QgsVectorLayer::changeGeometry( QgsFeatureId fid, QgsGeometry* geom )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
updateExtents();
|
|
|
|
return mEditBuffer->changeGeometry( fid, geom );
|
|
}
|
|
|
|
|
|
bool QgsVectorLayer::changeAttributeValue( QgsFeatureId fid, int field, QVariant value, bool emitSignal )
|
|
{
|
|
Q_UNUSED( emitSignal ); // TODO[MD] - see also QgsFieldCalculator and #7071
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return false;
|
|
|
|
return mEditBuffer->changeAttributeValue( fid, field, value );
|
|
}
|
|
|
|
bool QgsVectorLayer::addAttribute( const QgsField &field )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return false;
|
|
|
|
return mEditBuffer->addAttribute( field );
|
|
}
|
|
|
|
void QgsVectorLayer::addAttributeAlias( int attIndex, QString aliasString )
|
|
{
|
|
if ( attIndex < 0 || attIndex >= pendingFields().count() )
|
|
return;
|
|
|
|
QString name = pendingFields()[ attIndex ].name();
|
|
|
|
mAttributeAliasMap.insert( name, aliasString );
|
|
emit layerModified(); // TODO[MD]: should have a different signal?
|
|
}
|
|
|
|
void QgsVectorLayer::addAttributeEditorWidget( QgsAttributeEditorElement* data )
|
|
{
|
|
mAttributeEditorElements.append( data );
|
|
}
|
|
|
|
QString QgsVectorLayer::attributeAlias( int attributeIndex ) const
|
|
{
|
|
if ( attributeIndex < 0 || attributeIndex >= pendingFields().count() )
|
|
return "";
|
|
|
|
QString name = pendingFields()[ attributeIndex ].name();
|
|
|
|
return mAttributeAliasMap.value( name, "" );
|
|
}
|
|
|
|
QString QgsVectorLayer::attributeDisplayName( int attributeIndex ) const
|
|
{
|
|
QString displayName = attributeAlias( attributeIndex );
|
|
if ( displayName.isEmpty() )
|
|
{
|
|
const QgsFields& fields = pendingFields();
|
|
if ( attributeIndex >= 0 && attributeIndex < fields.count() )
|
|
{
|
|
displayName = fields[attributeIndex].name();
|
|
}
|
|
}
|
|
return displayName;
|
|
}
|
|
|
|
bool QgsVectorLayer::deleteAttribute( int index )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return false;
|
|
|
|
return mEditBuffer->deleteAttribute( index );
|
|
}
|
|
|
|
bool QgsVectorLayer::deleteAttributes( QList<int> attrs )
|
|
{
|
|
bool deleted = false;
|
|
|
|
// Remove multiple occurences of same attribute
|
|
attrs = attrs.toSet().toList();
|
|
|
|
qSort( attrs.begin(), attrs.end(), qGreater<int>() );
|
|
|
|
foreach ( int attr, attrs )
|
|
{
|
|
if ( deleteAttribute( attr ) )
|
|
{
|
|
deleted = true;
|
|
}
|
|
}
|
|
|
|
return deleted;
|
|
}
|
|
|
|
bool QgsVectorLayer::deleteFeature( QgsFeatureId fid )
|
|
{
|
|
if ( !mEditBuffer )
|
|
return false;
|
|
|
|
bool res = mEditBuffer->deleteFeature( fid );
|
|
if ( res )
|
|
mSelectedFeatureIds.remove( fid ); // remove it from selection
|
|
|
|
updateExtents();
|
|
|
|
return res;
|
|
}
|
|
|
|
const QgsFields &QgsVectorLayer::pendingFields() const
|
|
{
|
|
return mUpdatedFields;
|
|
}
|
|
|
|
QgsAttributeList QgsVectorLayer::pendingAllAttributesList()
|
|
{
|
|
QgsAttributeList lst;
|
|
for ( int i = 0; i < mUpdatedFields.count(); ++i )
|
|
lst.append( i );
|
|
return lst;
|
|
}
|
|
|
|
QgsAttributeList QgsVectorLayer::pendingPkAttributesList()
|
|
{
|
|
QgsAttributeList pkAttributesList;
|
|
|
|
QgsAttributeList providerIndexes = mDataProvider->pkAttributeIndexes();
|
|
for ( int i = 0; i < mUpdatedFields.count(); ++i )
|
|
{
|
|
if ( mUpdatedFields.fieldOrigin( i ) == QgsFields::OriginProvider &&
|
|
providerIndexes.contains( mUpdatedFields.fieldOriginIndex( i ) ) )
|
|
pkAttributesList << i;
|
|
}
|
|
|
|
return pkAttributesList;
|
|
}
|
|
|
|
int QgsVectorLayer::pendingFeatureCount()
|
|
{
|
|
return mDataProvider->featureCount() +
|
|
( mEditBuffer ? mEditBuffer->mAddedFeatures.size() - mEditBuffer->mDeletedFeatureIds.size() : 0 );
|
|
}
|
|
|
|
bool QgsVectorLayer::commitChanges()
|
|
{
|
|
mCommitErrors.clear();
|
|
|
|
if ( !mDataProvider )
|
|
{
|
|
mCommitErrors << tr( "ERROR: no provider" );
|
|
return false;
|
|
}
|
|
|
|
if ( !mEditBuffer )
|
|
{
|
|
mCommitErrors << tr( "ERROR: layer not editable" );
|
|
return false;
|
|
}
|
|
|
|
emit beforeCommitChanges();
|
|
|
|
bool success = mEditBuffer->commitChanges( mCommitErrors );
|
|
|
|
if ( success )
|
|
{
|
|
delete mEditBuffer;
|
|
mEditBuffer = 0;
|
|
undoStack()->clear();
|
|
emit editingStopped();
|
|
}
|
|
else
|
|
{
|
|
QgsMessageLog::logMessage( tr( "Commit errors:\n %1" ).arg( mCommitErrors.join( "\n " ) ) );
|
|
}
|
|
|
|
if ( mCache )
|
|
{
|
|
mCache->deleteCachedGeometries();
|
|
}
|
|
|
|
updateFields();
|
|
mDataProvider->updateExtents();
|
|
|
|
//clear the cache image so markers don't appear anymore on next draw
|
|
setCacheImage( 0 );
|
|
|
|
return success;
|
|
}
|
|
|
|
const QStringList &QgsVectorLayer::commitErrors()
|
|
{
|
|
return mCommitErrors;
|
|
}
|
|
|
|
bool QgsVectorLayer::rollBack( bool deleteBuffer )
|
|
{
|
|
if ( !mEditBuffer )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
emit beforeRollBack();
|
|
|
|
mEditBuffer->rollBack();
|
|
|
|
if ( isModified() )
|
|
{
|
|
// new undo stack roll back method
|
|
// old method of calling every undo could cause many canvas refreshes
|
|
undoStack()->setIndex( 0 );
|
|
}
|
|
|
|
updateFields();
|
|
|
|
if ( deleteBuffer )
|
|
{
|
|
delete mEditBuffer;
|
|
mEditBuffer = 0;
|
|
undoStack()->clear();
|
|
}
|
|
emit editingStopped();
|
|
|
|
if ( mCache )
|
|
{
|
|
mCache->deleteCachedGeometries();
|
|
}
|
|
|
|
// invalidate the cache so the layer updates properly to show its original
|
|
// after the rollback
|
|
setCacheImage( 0 );
|
|
return true;
|
|
}
|
|
|
|
void QgsVectorLayer::setSelectedFeatures( const QgsFeatureIds& ids )
|
|
{
|
|
QgsFeatureIds deselectedFeatures = mSelectedFeatureIds - ids;
|
|
// TODO: check whether features with these ID exist
|
|
mSelectedFeatureIds = ids;
|
|
|
|
// invalidate cache
|
|
setCacheImage( 0 );
|
|
|
|
emit selectionChanged( ids, deselectedFeatures, true );
|
|
}
|
|
|
|
int QgsVectorLayer::selectedFeatureCount()
|
|
{
|
|
return mSelectedFeatureIds.size();
|
|
}
|
|
|
|
const QgsFeatureIds& QgsVectorLayer::selectedFeaturesIds() const
|
|
{
|
|
return mSelectedFeatureIds;
|
|
}
|
|
|
|
|
|
QgsFeatureList QgsVectorLayer::selectedFeatures()
|
|
{
|
|
QgsFeatureList features;
|
|
|
|
QgsFeatureRequest req;
|
|
if ( geometryType() == QGis::NoGeometry )
|
|
req.setFlags( QgsFeatureRequest::NoGeometry );
|
|
|
|
foreach ( QgsFeatureId fid, mSelectedFeatureIds )
|
|
{
|
|
features.push_back( QgsFeature() );
|
|
getFeatures( req.setFilterFid( fid ) ).nextFeature( features.back() );
|
|
}
|
|
|
|
return features;
|
|
}
|
|
|
|
bool QgsVectorLayer::addFeatures( QgsFeatureList features, bool makeSelected )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return false;
|
|
|
|
bool res = mEditBuffer->addFeatures( features );
|
|
|
|
if ( makeSelected )
|
|
{
|
|
QgsFeatureIds ids;
|
|
|
|
for ( QgsFeatureList::iterator iter = features.begin(); iter != features.end(); ++iter )
|
|
ids << iter->id();
|
|
|
|
setSelectedFeatures( ids );
|
|
}
|
|
|
|
updateExtents();
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
bool QgsVectorLayer::snapPoint( QgsPoint& point, double tolerance )
|
|
{
|
|
if ( !hasGeometryType() )
|
|
return false;
|
|
|
|
QMultiMap<double, QgsSnappingResult> snapResults;
|
|
int result = snapWithContext( point, tolerance, snapResults, QgsSnapper::SnapToVertex );
|
|
|
|
if ( result != 0 )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if ( snapResults.size() < 1 )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
QMultiMap<double, QgsSnappingResult>::const_iterator snap_it = snapResults.constBegin();
|
|
point.setX( snap_it.value().snappedVertex.x() );
|
|
point.setY( snap_it.value().snappedVertex.y() );
|
|
return true;
|
|
}
|
|
|
|
|
|
int QgsVectorLayer::snapWithContext( const QgsPoint& startPoint, double snappingTolerance,
|
|
QMultiMap<double, QgsSnappingResult>& snappingResults,
|
|
QgsSnapper::SnappingType snap_to )
|
|
{
|
|
if ( !hasGeometryType() )
|
|
return 1;
|
|
|
|
if ( snappingTolerance <= 0 || !mDataProvider )
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
QList<QgsFeature> featureList;
|
|
QgsRectangle searchRect( startPoint.x() - snappingTolerance, startPoint.y() - snappingTolerance,
|
|
startPoint.x() + snappingTolerance, startPoint.y() + snappingTolerance );
|
|
double sqrSnappingTolerance = snappingTolerance * snappingTolerance;
|
|
|
|
int n = 0;
|
|
QgsFeature f;
|
|
|
|
if ( mCache->cachedGeometriesRect().contains( searchRect ) )
|
|
{
|
|
QgsGeometryMap& cachedGeometries = mCache->cachedGeometries();
|
|
for ( QgsGeometryMap::iterator it = cachedGeometries.begin(); it != cachedGeometries.end() ; ++it )
|
|
{
|
|
QgsGeometry* g = &( it.value() );
|
|
if ( g->boundingBox().intersects( searchRect ) )
|
|
{
|
|
snapToGeometry( startPoint, it.key(), g, sqrSnappingTolerance, snappingResults, snap_to );
|
|
++n;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// snapping outside cached area
|
|
|
|
QgsFeatureIterator fit = getFeatures( QgsFeatureRequest()
|
|
.setFilterRect( searchRect )
|
|
.setFlags( QgsFeatureRequest::ExactIntersect )
|
|
.setSubsetOfAttributes( QgsAttributeList() ) );
|
|
|
|
while ( fit.nextFeature( f ) )
|
|
{
|
|
snapToGeometry( startPoint, f.id(), f.geometry(), sqrSnappingTolerance, snappingResults, snap_to );
|
|
++n;
|
|
}
|
|
}
|
|
|
|
return n == 0 ? 2 : 0;
|
|
}
|
|
|
|
void QgsVectorLayer::snapToGeometry( const QgsPoint& startPoint,
|
|
QgsFeatureId featureId,
|
|
QgsGeometry* geom,
|
|
double sqrSnappingTolerance,
|
|
QMultiMap<double, QgsSnappingResult>& snappingResults,
|
|
QgsSnapper::SnappingType snap_to ) const
|
|
{
|
|
if ( !geom )
|
|
{
|
|
return;
|
|
}
|
|
|
|
int atVertex, beforeVertex, afterVertex;
|
|
double sqrDistVertexSnap, sqrDistSegmentSnap;
|
|
QgsPoint snappedPoint;
|
|
QgsSnappingResult snappingResultVertex;
|
|
QgsSnappingResult snappingResultSegment;
|
|
|
|
if ( snap_to == QgsSnapper::SnapToVertex || snap_to == QgsSnapper::SnapToVertexAndSegment )
|
|
{
|
|
snappedPoint = geom->closestVertex( startPoint, atVertex, beforeVertex, afterVertex, sqrDistVertexSnap );
|
|
if ( sqrDistVertexSnap < sqrSnappingTolerance )
|
|
{
|
|
snappingResultVertex.snappedVertex = snappedPoint;
|
|
snappingResultVertex.snappedVertexNr = atVertex;
|
|
snappingResultVertex.beforeVertexNr = beforeVertex;
|
|
if ( beforeVertex != -1 ) // make sure the vertex is valid
|
|
{
|
|
snappingResultVertex.beforeVertex = geom->vertexAt( beforeVertex );
|
|
}
|
|
snappingResultVertex.afterVertexNr = afterVertex;
|
|
if ( afterVertex != -1 ) // make sure the vertex is valid
|
|
{
|
|
snappingResultVertex.afterVertex = geom->vertexAt( afterVertex );
|
|
}
|
|
snappingResultVertex.snappedAtGeometry = featureId;
|
|
snappingResultVertex.layer = this;
|
|
snappingResults.insert( sqrt( sqrDistVertexSnap ), snappingResultVertex );
|
|
return;
|
|
}
|
|
}
|
|
if ( snap_to == QgsSnapper::SnapToSegment || snap_to == QgsSnapper::SnapToVertexAndSegment ) // snap to segment
|
|
{
|
|
if ( geometryType() != QGis::Point ) // cannot snap to segment for points/multipoints
|
|
{
|
|
sqrDistSegmentSnap = geom->closestSegmentWithContext( startPoint, snappedPoint, afterVertex, NULL, crs().geographicFlag() ? 1e-12 : 1e-8 );
|
|
|
|
if ( sqrDistSegmentSnap < sqrSnappingTolerance )
|
|
{
|
|
snappingResultSegment.snappedVertex = snappedPoint;
|
|
snappingResultSegment.snappedVertexNr = -1;
|
|
snappingResultSegment.beforeVertexNr = afterVertex - 1;
|
|
snappingResultSegment.afterVertexNr = afterVertex;
|
|
snappingResultSegment.snappedAtGeometry = featureId;
|
|
snappingResultSegment.beforeVertex = geom->vertexAt( afterVertex - 1 );
|
|
snappingResultSegment.afterVertex = geom->vertexAt( afterVertex );
|
|
snappingResultSegment.layer = this;
|
|
snappingResults.insert( sqrt( sqrDistSegmentSnap ), snappingResultSegment );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
int QgsVectorLayer::insertSegmentVerticesForSnap( const QList<QgsSnappingResult>& snapResults )
|
|
{
|
|
QgsVectorLayerEditUtils utils( this );
|
|
return utils.insertSegmentVerticesForSnap( snapResults );
|
|
}
|
|
|
|
|
|
QgsVectorLayer::VertexMarkerType QgsVectorLayer::currentVertexMarkerType()
|
|
{
|
|
QSettings settings;
|
|
QString markerTypeString = settings.value( "/qgis/digitizing/marker_style", "Cross" ).toString();
|
|
if ( markerTypeString == "Cross" )
|
|
{
|
|
return QgsVectorLayer::Cross;
|
|
}
|
|
else if ( markerTypeString == "SemiTransparentCircle" )
|
|
{
|
|
return QgsVectorLayer::SemiTransparentCircle;
|
|
}
|
|
else
|
|
{
|
|
return QgsVectorLayer::NoMarker;
|
|
}
|
|
}
|
|
|
|
int QgsVectorLayer::currentVertexMarkerSize()
|
|
{
|
|
QSettings settings;
|
|
return settings.value( "/qgis/digitizing/marker_size", 3 ).toInt();
|
|
}
|
|
|
|
|
|
|
|
void QgsVectorLayer::setCoordinateSystem()
|
|
{
|
|
QgsDebugMsg( "----- Computing Coordinate System" );
|
|
|
|
//
|
|
// Get the layers project info and set up the QgsCoordinateTransform
|
|
// for this layer
|
|
//
|
|
|
|
if ( hasGeometryType() )
|
|
{
|
|
// get CRS directly from provider
|
|
setCrs( mDataProvider->crs() );
|
|
}
|
|
else
|
|
{
|
|
setCrs( QgsCoordinateReferenceSystem( GEO_EPSG_CRS_AUTHID ) );
|
|
}
|
|
}
|
|
|
|
|
|
const QString QgsVectorLayer::displayField() const
|
|
{
|
|
return mDisplayField;
|
|
}
|
|
|
|
void QgsVectorLayer::setDisplayExpression( const QString displayExpression )
|
|
{
|
|
mDisplayExpression = displayExpression;
|
|
}
|
|
|
|
const QString QgsVectorLayer::displayExpression()
|
|
{
|
|
return mDisplayExpression;
|
|
}
|
|
|
|
bool QgsVectorLayer::isEditable() const
|
|
{
|
|
return ( mEditBuffer && mDataProvider );
|
|
}
|
|
|
|
bool QgsVectorLayer::isReadOnly() const
|
|
{
|
|
return mReadOnly;
|
|
}
|
|
|
|
bool QgsVectorLayer::setReadOnly( bool readonly )
|
|
{
|
|
// exit if the layer is in editing mode
|
|
if ( readonly && mEditBuffer )
|
|
return false;
|
|
|
|
mReadOnly = readonly;
|
|
return true;
|
|
}
|
|
|
|
bool QgsVectorLayer::isModified() const
|
|
{
|
|
return mEditBuffer && mEditBuffer->isModified();
|
|
}
|
|
|
|
QgsVectorLayer::EditType QgsVectorLayer::editType( int idx )
|
|
{
|
|
const QgsFields &fields = pendingFields();
|
|
if ( idx >= 0 && idx < fields.count() && mEditTypes.contains( fields[idx].name() ) )
|
|
return mEditTypes[ fields[idx].name()];
|
|
else
|
|
return LineEdit;
|
|
}
|
|
|
|
void QgsVectorLayer::setEditType( int idx, EditType type )
|
|
{
|
|
const QgsFields &fields = pendingFields();
|
|
if ( idx >= 0 && idx < fields.count() )
|
|
mEditTypes[ fields[idx].name()] = type;
|
|
}
|
|
|
|
QgsVectorLayer::EditorLayout QgsVectorLayer::editorLayout()
|
|
{
|
|
return mEditorLayout;
|
|
}
|
|
|
|
void QgsVectorLayer::setEditorLayout( EditorLayout editorLayout )
|
|
{
|
|
mEditorLayout = editorLayout;
|
|
}
|
|
|
|
QString QgsVectorLayer::editForm()
|
|
{
|
|
return mEditForm;
|
|
}
|
|
|
|
void QgsVectorLayer::setEditForm( QString ui )
|
|
{
|
|
mEditForm = ui;
|
|
}
|
|
|
|
void QgsVectorLayer::setAnnotationForm( const QString& ui )
|
|
{
|
|
mAnnotationForm = ui;
|
|
}
|
|
|
|
QString QgsVectorLayer::editFormInit()
|
|
{
|
|
return mEditFormInit;
|
|
}
|
|
|
|
void QgsVectorLayer::setEditFormInit( QString function )
|
|
{
|
|
mEditFormInit = function;
|
|
}
|
|
|
|
QMap< QString, QVariant > &QgsVectorLayer::valueMap( int idx )
|
|
{
|
|
const QgsFields &fields = pendingFields();
|
|
|
|
// FIXME: throw an exception!?
|
|
static QMap< QString, QVariant > invalidMap;
|
|
if ( idx < 0 || idx >= fields.count() )
|
|
{
|
|
QgsDebugMsg( QString( "field %1 not found" ).arg( idx ) );
|
|
return invalidMap;
|
|
}
|
|
QString fieldName = fields[idx].name();
|
|
|
|
if ( !mValueMaps.contains( fieldName ) )
|
|
mValueMaps[fieldName] = QMap<QString, QVariant>();
|
|
|
|
return mValueMaps[fieldName];
|
|
}
|
|
|
|
QgsVectorLayer::RangeData &QgsVectorLayer::range( int idx )
|
|
{
|
|
const QgsFields &fields = pendingFields();
|
|
|
|
// FIXME: throw an exception!?
|
|
static QgsVectorLayer::RangeData invalidRange;
|
|
if ( idx < 0 || idx >= fields.count() )
|
|
{
|
|
QgsDebugMsg( QString( "field %1 not found" ).arg( idx ) );
|
|
return invalidRange;
|
|
}
|
|
QString fieldName = fields[idx].name();
|
|
|
|
if ( !mRanges.contains( fieldName ) )
|
|
mRanges[fieldName] = RangeData();
|
|
|
|
return mRanges[fieldName];
|
|
}
|
|
|
|
QString &QgsVectorLayer::dateFormat( int idx )
|
|
{
|
|
const QgsFields &fields = pendingFields();
|
|
|
|
QString fieldName = fields[idx].name();
|
|
|
|
if ( !mDateFormats.contains( fieldName ) )
|
|
mDateFormats[fieldName] = "yyyy-MM-dd";
|
|
|
|
return mDateFormats[fieldName];
|
|
}
|
|
|
|
QSize &QgsVectorLayer::widgetSize( int idx )
|
|
{
|
|
const QgsFields &fields = pendingFields();
|
|
|
|
QString fieldName = fields[idx].name();
|
|
|
|
if ( !mWidgetSize.contains( fieldName ) )
|
|
mWidgetSize[fieldName] = QSize( 0, 0 );
|
|
|
|
return mWidgetSize[fieldName];
|
|
}
|
|
|
|
bool QgsVectorLayer::fieldEditable( int idx )
|
|
{
|
|
const QgsFields &fields = pendingFields();
|
|
if ( idx >= 0 && idx < fields.count() )
|
|
{
|
|
if ( mUpdatedFields.fieldOrigin( idx ) == QgsFields::OriginJoin )
|
|
return false;
|
|
return mFieldEditables.value( fields[idx].name(), true );
|
|
}
|
|
else
|
|
return true;
|
|
}
|
|
|
|
bool QgsVectorLayer::labelOnTop( int idx )
|
|
{
|
|
const QgsFields &fields = pendingFields();
|
|
if ( idx >= 0 && idx < fields.count() )
|
|
return mLabelOnTop.value( fields[idx].name(), false );
|
|
else
|
|
return false;
|
|
}
|
|
|
|
void QgsVectorLayer::setFieldEditable( int idx, bool editable )
|
|
{
|
|
const QgsFields &fields = pendingFields();
|
|
if ( idx >= 0 && idx < fields.count() )
|
|
mFieldEditables[ fields[idx].name()] = editable;
|
|
}
|
|
|
|
void QgsVectorLayer::setLabelOnTop( int idx, bool onTop )
|
|
{
|
|
const QgsFields &fields = pendingFields();
|
|
if ( idx >= 0 && idx < fields.count() )
|
|
mLabelOnTop[ fields[idx].name()] = onTop;
|
|
}
|
|
|
|
QgsFeatureRendererV2* QgsVectorLayer::rendererV2()
|
|
{
|
|
return mRendererV2;
|
|
}
|
|
|
|
void QgsVectorLayer::setRendererV2( QgsFeatureRendererV2 *r )
|
|
{
|
|
if ( !hasGeometryType() )
|
|
return;
|
|
|
|
if ( r != mRendererV2 )
|
|
{
|
|
delete mRendererV2;
|
|
mRendererV2 = r;
|
|
mSymbolFeatureCounted = false;
|
|
mSymbolFeatureCountMap.clear();
|
|
}
|
|
}
|
|
|
|
|
|
|
|
void QgsVectorLayer::beginEditCommand( QString text )
|
|
{
|
|
undoStack()->beginMacro( text );
|
|
}
|
|
|
|
void QgsVectorLayer::endEditCommand()
|
|
{
|
|
undoStack()->endMacro();
|
|
}
|
|
|
|
void QgsVectorLayer::destroyEditCommand()
|
|
{
|
|
undoStack()->endMacro();
|
|
undoStack()->undo();
|
|
}
|
|
|
|
|
|
void QgsVectorLayer::setCheckedState( int idx, QString checked, QString unchecked )
|
|
{
|
|
const QgsFields &fields = pendingFields();
|
|
if ( idx >= 0 && idx < fields.count() )
|
|
mCheckedStates[ fields[idx].name()] = QPair<QString, QString>( checked, unchecked );
|
|
}
|
|
|
|
QPair<QString, QString> QgsVectorLayer::checkedState( int idx )
|
|
{
|
|
const QgsFields &fields = pendingFields();
|
|
if ( idx >= 0 && idx < fields.count() && mCheckedStates.contains( fields[idx].name() ) )
|
|
return mCheckedStates[ fields[idx].name()];
|
|
else
|
|
return QPair<QString, QString>( "1", "0" );
|
|
}
|
|
|
|
int QgsVectorLayer::fieldNameIndex( const QString& fieldName ) const
|
|
{
|
|
const QgsFields &theFields = pendingFields();
|
|
|
|
for ( int idx = 0; idx < theFields.count(); ++idx )
|
|
{
|
|
if ( QString::compare( theFields[idx].name(), fieldName, Qt::CaseInsensitive ) == 0 )
|
|
{
|
|
return idx;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
void QgsVectorLayer::addJoin( const QgsVectorJoinInfo& joinInfo )
|
|
{
|
|
mJoinBuffer->addJoin( joinInfo );
|
|
updateFields();
|
|
}
|
|
|
|
void QgsVectorLayer::checkJoinLayerRemove( QString theLayerId )
|
|
{
|
|
removeJoin( theLayerId );
|
|
}
|
|
|
|
void QgsVectorLayer::removeJoin( const QString& joinLayerId )
|
|
{
|
|
mJoinBuffer->removeJoin( joinLayerId );
|
|
updateFields();
|
|
}
|
|
|
|
const QList< QgsVectorJoinInfo >& QgsVectorLayer::vectorJoins() const
|
|
{
|
|
return mJoinBuffer->vectorJoins();
|
|
}
|
|
|
|
void QgsVectorLayer::updateFields()
|
|
{
|
|
if ( !mDataProvider )
|
|
return;
|
|
|
|
mUpdatedFields = mDataProvider->fields();
|
|
|
|
// added / removed fields
|
|
if ( mEditBuffer )
|
|
mEditBuffer->updateFields( mUpdatedFields );
|
|
|
|
// joined fields
|
|
if ( mJoinBuffer && mJoinBuffer->containsJoins() )
|
|
mJoinBuffer->updateFields( mUpdatedFields );
|
|
|
|
emit updatedFields();
|
|
}
|
|
|
|
|
|
void QgsVectorLayer::createJoinCaches()
|
|
{
|
|
if ( mJoinBuffer->containsJoins() )
|
|
{
|
|
mJoinBuffer->createJoinCaches();
|
|
}
|
|
}
|
|
|
|
void QgsVectorLayer::uniqueValues( int index, QList<QVariant> &uniqueValues, int limit )
|
|
{
|
|
uniqueValues.clear();
|
|
if ( !mDataProvider )
|
|
{
|
|
return;
|
|
}
|
|
|
|
QgsFields::FieldOrigin origin = mUpdatedFields.fieldOrigin( index );
|
|
|
|
if ( origin == QgsFields::OriginProvider ) //a provider field
|
|
{
|
|
return mDataProvider->uniqueValues( index, uniqueValues, limit );
|
|
}
|
|
else if ( origin == QgsFields::OriginJoin )
|
|
{
|
|
int sourceLayerIndex;
|
|
const QgsVectorJoinInfo* join = mJoinBuffer->joinForFieldIndex( index, mUpdatedFields, sourceLayerIndex );
|
|
Q_ASSERT( join );
|
|
|
|
QgsVectorLayer* vl = dynamic_cast<QgsVectorLayer*>( QgsMapLayerRegistry::instance()->mapLayer( join->joinLayerId ) );
|
|
Q_ASSERT( vl );
|
|
|
|
return vl->dataProvider()->uniqueValues( sourceLayerIndex, uniqueValues, limit );
|
|
}
|
|
else if ( origin == QgsFields::OriginEdit )
|
|
{
|
|
// the layer is editable, but in certain cases it can still be avoided going through all features
|
|
if ( mEditBuffer->mDeletedFeatureIds.isEmpty() && mEditBuffer->mAddedFeatures.isEmpty() && !mEditBuffer->mDeletedAttributeIds.contains( index ) && mEditBuffer->mChangedAttributeValues.isEmpty() )
|
|
{
|
|
return mDataProvider->uniqueValues( index, uniqueValues, limit );
|
|
}
|
|
|
|
// we need to go through each feature
|
|
QgsAttributeList attList;
|
|
attList << index;
|
|
|
|
QgsFeatureIterator fit = getFeatures( QgsFeatureRequest()
|
|
.setFlags( QgsFeatureRequest::NoGeometry )
|
|
.setSubsetOfAttributes( attList ) );
|
|
|
|
QgsFeature f;
|
|
QVariant currentValue;
|
|
QHash<QString, QVariant> val;
|
|
while ( fit.nextFeature( f ) )
|
|
{
|
|
currentValue = f.attribute( index );
|
|
val.insert( currentValue.toString(), currentValue );
|
|
if ( limit >= 0 && val.size() >= limit )
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
uniqueValues = val.values();
|
|
return;
|
|
}
|
|
|
|
Q_ASSERT_X( false, "QgsVectorLayer::uniqueValues()", "Unknown source of the field!" );
|
|
}
|
|
|
|
QVariant QgsVectorLayer::minimumValue( int index )
|
|
{
|
|
if ( !mDataProvider )
|
|
{
|
|
return QVariant();
|
|
}
|
|
|
|
QgsFields::FieldOrigin origin = mUpdatedFields.fieldOrigin( index );
|
|
|
|
if ( origin == QgsFields::OriginProvider ) //a provider field
|
|
{
|
|
return mDataProvider->minimumValue( index );
|
|
}
|
|
else if ( origin == QgsFields::OriginJoin )
|
|
{
|
|
int sourceLayerIndex;
|
|
const QgsVectorJoinInfo* join = mJoinBuffer->joinForFieldIndex( index, mUpdatedFields, sourceLayerIndex );
|
|
Q_ASSERT( join );
|
|
|
|
QgsVectorLayer* vl = dynamic_cast<QgsVectorLayer*>( QgsMapLayerRegistry::instance()->mapLayer( join->joinLayerId ) );
|
|
Q_ASSERT( vl );
|
|
|
|
return vl->minimumValue( sourceLayerIndex );
|
|
}
|
|
else if ( origin == QgsFields::OriginEdit )
|
|
{
|
|
// the layer is editable, but in certain cases it can still be avoided going through all features
|
|
if ( mEditBuffer->mDeletedFeatureIds.isEmpty() && mEditBuffer->mAddedFeatures.isEmpty() && !mEditBuffer->mDeletedAttributeIds.contains( index ) && mEditBuffer->mChangedAttributeValues.isEmpty() )
|
|
{
|
|
return mDataProvider->minimumValue( index );
|
|
}
|
|
|
|
// we need to go through each feature
|
|
QgsAttributeList attList;
|
|
attList << index;
|
|
|
|
QgsFeatureIterator fit = getFeatures( QgsFeatureRequest()
|
|
.setFlags( QgsFeatureRequest::NoGeometry )
|
|
.setSubsetOfAttributes( attList ) );
|
|
|
|
QgsFeature f;
|
|
double minimumValue = std::numeric_limits<double>::max();
|
|
double currentValue = 0;
|
|
while ( fit.nextFeature( f ) )
|
|
{
|
|
currentValue = f.attribute( index ).toDouble();
|
|
if ( currentValue < minimumValue )
|
|
{
|
|
minimumValue = currentValue;
|
|
}
|
|
}
|
|
return QVariant( minimumValue );
|
|
}
|
|
|
|
Q_ASSERT_X( false, "QgsVectorLayer::minimumValue()", "Unknown source of the field!" );
|
|
return QVariant();
|
|
}
|
|
|
|
QVariant QgsVectorLayer::maximumValue( int index )
|
|
{
|
|
if ( !mDataProvider )
|
|
{
|
|
return QVariant();
|
|
}
|
|
|
|
QgsFields::FieldOrigin origin = mUpdatedFields.fieldOrigin( index );
|
|
|
|
if ( origin == QgsFields::OriginProvider ) //a provider field
|
|
{
|
|
return mDataProvider->maximumValue( index );
|
|
}
|
|
else if ( origin == QgsFields::OriginJoin )
|
|
{
|
|
int sourceLayerIndex;
|
|
const QgsVectorJoinInfo* join = mJoinBuffer->joinForFieldIndex( index, mUpdatedFields, sourceLayerIndex );
|
|
Q_ASSERT( join );
|
|
|
|
QgsVectorLayer* vl = dynamic_cast<QgsVectorLayer*>( QgsMapLayerRegistry::instance()->mapLayer( join->joinLayerId ) );
|
|
Q_ASSERT( vl );
|
|
|
|
return vl->maximumValue( sourceLayerIndex );
|
|
}
|
|
else if ( origin == QgsFields::OriginEdit )
|
|
{
|
|
// the layer is editable, but in certain cases it can still be avoided going through all features
|
|
if ( mEditBuffer->mDeletedFeatureIds.isEmpty() &&
|
|
mEditBuffer->mAddedFeatures.isEmpty() &&
|
|
!mEditBuffer->mDeletedAttributeIds.contains( index ) &&
|
|
mEditBuffer->mChangedAttributeValues.isEmpty() )
|
|
{
|
|
return mDataProvider->maximumValue( index );
|
|
}
|
|
|
|
// we need to go through each feature
|
|
QgsAttributeList attList;
|
|
attList << index;
|
|
|
|
QgsFeatureIterator fit = getFeatures( QgsFeatureRequest()
|
|
.setFlags( QgsFeatureRequest::NoGeometry )
|
|
.setSubsetOfAttributes( attList ) );
|
|
|
|
QgsFeature f;
|
|
double maximumValue = -std::numeric_limits<double>::max();
|
|
double currentValue = 0;
|
|
while ( fit.nextFeature( f ) )
|
|
{
|
|
currentValue = f.attribute( index ).toDouble();
|
|
if ( currentValue > maximumValue )
|
|
{
|
|
maximumValue = currentValue;
|
|
}
|
|
}
|
|
return QVariant( maximumValue );
|
|
}
|
|
|
|
Q_ASSERT_X( false, "QgsVectorLayer::maximumValue()", "Unknown source of the field!" );
|
|
return QVariant();
|
|
}
|
|
|
|
/** Write blend mode for features */
|
|
void QgsVectorLayer::setFeatureBlendMode( const QPainter::CompositionMode featureBlendMode )
|
|
{
|
|
mFeatureBlendMode = featureBlendMode;
|
|
}
|
|
|
|
/** Read blend mode for layer */
|
|
QPainter::CompositionMode QgsVectorLayer::featureBlendMode() const
|
|
{
|
|
return mFeatureBlendMode;
|
|
}
|
|
|
|
/** Write transparency for layer */
|
|
void QgsVectorLayer::setLayerTransparency( int layerTransparency )
|
|
{
|
|
mLayerTransparency = layerTransparency;
|
|
}
|
|
|
|
/** Read transparency for layer */
|
|
int QgsVectorLayer::layerTransparency() const
|
|
{
|
|
return mLayerTransparency;
|
|
}
|
|
|
|
void QgsVectorLayer::stopRendererV2( QgsRenderContext& rendererContext, QgsSingleSymbolRendererV2* selRenderer )
|
|
{
|
|
mRendererV2->stopRender( rendererContext );
|
|
if ( selRenderer )
|
|
{
|
|
selRenderer->stopRender( rendererContext );
|
|
delete selRenderer;
|
|
}
|
|
}
|
|
|
|
void QgsVectorLayer::prepareLabelingAndDiagrams( QgsRenderContext& rendererContext, QgsAttributeList& attributes, bool& labeling )
|
|
{
|
|
if ( !rendererContext.labelingEngine() )
|
|
return;
|
|
|
|
QSet<int> attrIndex;
|
|
if ( rendererContext.labelingEngine()->prepareLayer( this, attrIndex, rendererContext ) )
|
|
{
|
|
QSet<int>::const_iterator attIt = attrIndex.constBegin();
|
|
for ( ; attIt != attrIndex.constEnd(); ++attIt )
|
|
{
|
|
if ( !attributes.contains( *attIt ) )
|
|
{
|
|
attributes << *attIt;
|
|
}
|
|
}
|
|
labeling = true;
|
|
}
|
|
|
|
if ( labeling )
|
|
{
|
|
QgsPalLayerSettings& palyr = rendererContext.labelingEngine()->layer( this->id() );
|
|
|
|
// see if feature count limit is set for labeling
|
|
if ( palyr.limitNumLabels && palyr.maxNumLabels > 0 )
|
|
{
|
|
QgsFeatureIterator fit = getFeatures( QgsFeatureRequest()
|
|
.setFilterRect( rendererContext.extent() )
|
|
.setSubsetOfAttributes( QgsAttributeList() ) );
|
|
|
|
// total number of features that may be labeled
|
|
QgsFeature f;
|
|
int nFeatsToLabel = 0;
|
|
while ( fit.nextFeature( f ) )
|
|
{
|
|
nFeatsToLabel++;
|
|
}
|
|
palyr.mFeaturesToLabel = nFeatsToLabel;
|
|
}
|
|
|
|
// notify user about any font substitution
|
|
if ( !palyr.mTextFontFound && !mLabelFontNotFoundNotified )
|
|
{
|
|
emit labelingFontNotFound( this, palyr.mTextFontFamily );
|
|
mLabelFontNotFoundNotified = true;
|
|
}
|
|
}
|
|
|
|
//register diagram layers
|
|
if ( mDiagramRenderer && mDiagramLayerSettings )
|
|
{
|
|
mDiagramLayerSettings->renderer = mDiagramRenderer;
|
|
rendererContext.labelingEngine()->addDiagramLayer( this, mDiagramLayerSettings );
|
|
//add attributes needed by the diagram renderer
|
|
QList<int> att = mDiagramRenderer->diagramAttributes();
|
|
QList<int>::const_iterator attIt = att.constBegin();
|
|
for ( ; attIt != att.constEnd(); ++attIt )
|
|
{
|
|
if ( !attributes.contains( *attIt ) )
|
|
{
|
|
attributes << *attIt;
|
|
}
|
|
}
|
|
//and the ones needed for data defined diagram positions
|
|
if ( mDiagramLayerSettings->xPosColumn >= 0 && !attributes.contains( mDiagramLayerSettings->xPosColumn ) )
|
|
{
|
|
attributes << mDiagramLayerSettings->xPosColumn;
|
|
}
|
|
if ( mDiagramLayerSettings->yPosColumn >= 0 && !attributes.contains( mDiagramLayerSettings->yPosColumn ) )
|
|
{
|
|
attributes << mDiagramLayerSettings->yPosColumn;
|
|
}
|
|
}
|
|
}
|
|
|
|
void QgsVectorLayer::setDiagramLayerSettings( const QgsDiagramLayerSettings& s )
|
|
{
|
|
if ( !mDiagramLayerSettings )
|
|
mDiagramLayerSettings = new QgsDiagramLayerSettings();
|
|
*mDiagramLayerSettings = s;
|
|
}
|
|
|
|
QString QgsVectorLayer::metadata()
|
|
{
|
|
QString myMetadata = "<html><body>";
|
|
|
|
//-------------
|
|
|
|
myMetadata += "<p class=\"subheaderglossy\">";
|
|
myMetadata += tr( "General" );
|
|
myMetadata += "</p>\n";
|
|
|
|
// data comment
|
|
if ( !( dataComment().isEmpty() ) )
|
|
{
|
|
myMetadata += "<p class=\"glossy\">" + tr( "Layer comment" ) + "</p>\n";
|
|
myMetadata += "<p>";
|
|
myMetadata += dataComment();
|
|
myMetadata += "</p>\n";
|
|
}
|
|
|
|
//storage type
|
|
myMetadata += "<p class=\"glossy\">" + tr( "Storage type of this layer" ) + "</p>\n";
|
|
myMetadata += "<p>";
|
|
myMetadata += storageType();
|
|
myMetadata += "</p>\n";
|
|
|
|
if ( dataProvider() )
|
|
{
|
|
//provider description
|
|
myMetadata += "<p class=\"glossy\">" + tr( "Description of this provider" ) + "</p>\n";
|
|
myMetadata += "<p>";
|
|
myMetadata += dataProvider()->description().replace( "\n", "<br>" );
|
|
myMetadata += "</p>\n";
|
|
}
|
|
|
|
// data source
|
|
myMetadata += "<p class=\"glossy\">" + tr( "Source for this layer" ) + "</p>\n";
|
|
myMetadata += "<p>";
|
|
myMetadata += publicSource();
|
|
myMetadata += "</p>\n";
|
|
|
|
//geom type
|
|
|
|
QGis::GeometryType type = geometryType();
|
|
|
|
if ( type < 0 || type > QGis::NoGeometry )
|
|
{
|
|
QgsDebugMsg( "Invalid vector type" );
|
|
}
|
|
else
|
|
{
|
|
QString typeString( QGis::vectorGeometryType( geometryType() ) );
|
|
|
|
myMetadata += "<p class=\"glossy\">" + tr( "Geometry type of the features in this layer" ) + "</p>\n";
|
|
myMetadata += "<p>";
|
|
myMetadata += typeString;
|
|
myMetadata += "</p>\n";
|
|
}
|
|
|
|
QgsAttributeList pkAttrList = pendingPkAttributesList();
|
|
if ( !pkAttrList.isEmpty() )
|
|
{
|
|
myMetadata += "<p class=\"glossy\">" + tr( "Primary key attributes" ) + "</p>\n";
|
|
myMetadata += "<p>";
|
|
foreach ( int idx, pkAttrList )
|
|
{
|
|
myMetadata += pendingFields()[ idx ].name() + " ";
|
|
}
|
|
myMetadata += "</p>\n";
|
|
}
|
|
|
|
|
|
//feature count
|
|
myMetadata += "<p class=\"glossy\">" + tr( "The number of features in this layer" ) + "</p>\n";
|
|
myMetadata += "<p>";
|
|
myMetadata += QString::number( featureCount() );
|
|
myMetadata += "</p>\n";
|
|
//capabilities
|
|
myMetadata += "<p class=\"glossy\">" + tr( "Editing capabilities of this layer" ) + "</p>\n";
|
|
myMetadata += "<p>";
|
|
myMetadata += capabilitiesString();
|
|
myMetadata += "</p>\n";
|
|
|
|
//-------------
|
|
|
|
QgsRectangle myExtent = extent();
|
|
myMetadata += "<p class=\"subheaderglossy\">";
|
|
myMetadata += tr( "Extents" );
|
|
myMetadata += "</p>\n";
|
|
|
|
//extents in layer cs TODO...maybe make a little nested table to improve layout...
|
|
myMetadata += "<p class=\"glossy\">" + tr( "In layer spatial reference system units" ) + "</p>\n";
|
|
myMetadata += "<p>";
|
|
// Try to be a bit clever over what number format we use for the
|
|
// extents. Some people don't like it using scientific notation when the
|
|
// numbers get large, but for small numbers this is the more practical
|
|
// option (so we can't force the format to 'f' for all values).
|
|
// The scheme:
|
|
// - for all numbers with more than 5 digits, force non-scientific notation
|
|
// and 2 digits after the decimal point.
|
|
// - for all smaller numbers let the OS decide which format to use (it will
|
|
// generally use non-scientific unless the number gets much less than 1).
|
|
|
|
if ( !myExtent.isEmpty() )
|
|
{
|
|
QString xMin, yMin, xMax, yMax;
|
|
double changeoverValue = 99999; // The 'largest' 5 digit number
|
|
if ( qAbs( myExtent.xMinimum() ) > changeoverValue )
|
|
{
|
|
xMin = QString( "%1" ).arg( myExtent.xMinimum(), 0, 'f', 2 );
|
|
}
|
|
else
|
|
{
|
|
xMin = QString( "%1" ).arg( myExtent.xMinimum() );
|
|
}
|
|
if ( qAbs( myExtent.yMinimum() ) > changeoverValue )
|
|
{
|
|
yMin = QString( "%1" ).arg( myExtent.yMinimum(), 0, 'f', 2 );
|
|
}
|
|
else
|
|
{
|
|
yMin = QString( "%1" ).arg( myExtent.yMinimum() );
|
|
}
|
|
if ( qAbs( myExtent.xMaximum() ) > changeoverValue )
|
|
{
|
|
xMax = QString( "%1" ).arg( myExtent.xMaximum(), 0, 'f', 2 );
|
|
}
|
|
else
|
|
{
|
|
xMax = QString( "%1" ).arg( myExtent.xMaximum() );
|
|
}
|
|
if ( qAbs( myExtent.yMaximum() ) > changeoverValue )
|
|
{
|
|
yMax = QString( "%1" ).arg( myExtent.yMaximum(), 0, 'f', 2 );
|
|
}
|
|
else
|
|
{
|
|
yMax = QString( "%1" ).arg( myExtent.yMaximum() );
|
|
}
|
|
|
|
myMetadata += tr( "xMin,yMin %1,%2 : xMax,yMax %3,%4" )
|
|
.arg( xMin ).arg( yMin ).arg( xMax ).arg( yMax );
|
|
}
|
|
else
|
|
{
|
|
myMetadata += tr( "unknown extent" );
|
|
}
|
|
|
|
myMetadata += "</p>\n";
|
|
|
|
//extents in project cs
|
|
|
|
try
|
|
{
|
|
#if 0
|
|
// TODO: currently disabled, will revisit later [MD]
|
|
QgsRectangle myProjectedExtent = coordinateTransform->transformBoundingBox( extent() );
|
|
myMetadata += "<p class=\"glossy\">" + tr( "In project spatial reference system units" ) + "</p>\n";
|
|
myMetadata += "<p>";
|
|
myMetadata += tr( "xMin,yMin %1,%2 : xMax,yMax %3,%4" )
|
|
.arg( myProjectedExtent.xMinimum() )
|
|
.arg( myProjectedExtent.yMinimum() )
|
|
.arg( myProjectedExtent.xMaximum() )
|
|
.arg( myProjectedExtent.yMaximum() );
|
|
myMetadata += "</p>\n";
|
|
#endif
|
|
|
|
//
|
|
// Display layer spatial ref system
|
|
//
|
|
myMetadata += "<p class=\"glossy\">" + tr( "Layer Spatial Reference System" ) + "</p>\n";
|
|
myMetadata += "<p>";
|
|
myMetadata += crs().toProj4().replace( QRegExp( "\"" ), " \"" );
|
|
myMetadata += "</p>\n";
|
|
|
|
//
|
|
// Display project (output) spatial ref system
|
|
//
|
|
#if 0
|
|
// TODO: disabled for now, will revisit later [MD]
|
|
//myMetadata += "<tr><td bgcolor=\"gray\">";
|
|
myMetadata += "<p class=\"glossy\">" + tr( "Project (Output) Spatial Reference System" ) + "</p>\n";
|
|
myMetadata += "<p>";
|
|
myMetadata += coordinateTransform->destCRS().toProj4().replace( QRegExp( "\"" ), " \"" );
|
|
myMetadata += "</p>\n";
|
|
#endif
|
|
}
|
|
catch ( QgsCsException &cse )
|
|
{
|
|
Q_UNUSED( cse );
|
|
QgsDebugMsg( cse.what() );
|
|
|
|
myMetadata += "<p class=\"glossy\">" + tr( "In project spatial reference system units" ) + "</p>\n";
|
|
myMetadata += "<p>";
|
|
myMetadata += tr( "(Invalid transformation of layer extents)" );
|
|
myMetadata += "</p>\n";
|
|
|
|
}
|
|
|
|
#if 0
|
|
//
|
|
// Add the info about each field in the attribute table
|
|
//
|
|
myMetadata += "<p class=\"glossy\">" + tr( "Attribute field info" ) + "</p>\n";
|
|
myMetadata += "<p>";
|
|
|
|
// Start a nested table in this trow
|
|
myMetadata += "<table width=\"100%\">";
|
|
myMetadata += "<tr><th>";
|
|
myMetadata += tr( "Field" );
|
|
myMetadata += "</th>";
|
|
myMetadata += "<th>";
|
|
myMetadata += tr( "Type" );
|
|
myMetadata += "</th>";
|
|
myMetadata += "<th>";
|
|
myMetadata += tr( "Length" );
|
|
myMetadata += "</th>";
|
|
myMetadata += "<th>";
|
|
myMetadata += tr( "Precision" );
|
|
myMetadata += "</th>";
|
|
myMetadata += "<th>";
|
|
myMetadata += tr( "Comment" );
|
|
myMetadata += "</th>";
|
|
|
|
//get info for each field by looping through them
|
|
const QgsFieldMap& myFields = pendingFields();
|
|
for ( QgsFieldMap::const_iterator it = myFields.begin(); it != myFields.end(); ++it )
|
|
{
|
|
const QgsField& myField = *it;
|
|
|
|
myMetadata += "<tr><td>";
|
|
myMetadata += myField.name();
|
|
myMetadata += "</td>";
|
|
myMetadata += "<td>";
|
|
myMetadata += myField.typeName();
|
|
myMetadata += "</td>";
|
|
myMetadata += "<td>";
|
|
myMetadata += QString( "%1" ).arg( myField.length() );
|
|
myMetadata += "</td>";
|
|
myMetadata += "<td>";
|
|
myMetadata += QString( "%1" ).arg( myField.precision() );
|
|
myMetadata += "</td>";
|
|
myMetadata += "<td>";
|
|
myMetadata += QString( "%1" ).arg( myField.comment() );
|
|
myMetadata += "</td></tr>";
|
|
}
|
|
|
|
//close field list
|
|
myMetadata += "</table>"; //end of nested table
|
|
#endif
|
|
|
|
myMetadata += "</body></html>";
|
|
return myMetadata;
|
|
}
|
|
|
|
void QgsVectorLayer::onCacheImageDelete()
|
|
{
|
|
if ( mCurrentRendererContext )
|
|
mCurrentRendererContext->setRenderingStopped( true );
|
|
}
|
|
|
|
void QgsVectorLayer::invalidateSymbolCountedFlag()
|
|
{
|
|
mSymbolFeatureCounted = false;
|
|
}
|
|
|
|
QgsVectorLayer::ValueRelationData &QgsVectorLayer::valueRelation( int idx )
|
|
{
|
|
const QgsFields &fields = pendingFields();
|
|
|
|
// FIXME: throw an exception!?
|
|
static QgsVectorLayer::ValueRelationData invalidData;
|
|
if ( idx < 0 || idx >= fields.count() )
|
|
{
|
|
QgsDebugMsg( QString( "field %1 not found" ).arg( idx ) );
|
|
return invalidData;
|
|
}
|
|
QString fieldName = fields[idx].name();
|
|
|
|
if ( !mValueRelations.contains( fieldName ) )
|
|
{
|
|
mValueRelations[fieldName] = ValueRelationData();
|
|
}
|
|
|
|
return mValueRelations[fieldName];
|
|
}
|
|
|
|
QList<QgsAttributeEditorElement*> &QgsVectorLayer::attributeEditorElements()
|
|
{
|
|
return mAttributeEditorElements;
|
|
}
|
|
|
|
void QgsVectorLayer::clearAttributeEditorWidgets()
|
|
{
|
|
mAttributeEditorElements.clear();
|
|
}
|
|
|
|
QDomElement QgsAttributeEditorContainer::toDomElement( QDomDocument& doc ) const
|
|
{
|
|
QDomElement elem = doc.createElement( "attributeEditorContainer" );
|
|
elem.setAttribute( "name", mName );
|
|
for ( QList< QgsAttributeEditorElement* >::const_iterator it = mChildren.begin(); it != mChildren.end(); ++it )
|
|
{
|
|
elem.appendChild(( *it )->toDomElement( doc ) );
|
|
}
|
|
return elem;
|
|
}
|
|
|
|
|
|
void QgsAttributeEditorContainer::addChildElement( QgsAttributeEditorElement *widget )
|
|
{
|
|
mChildren.append( widget );
|
|
}
|
|
|
|
QDomElement QgsAttributeEditorField::toDomElement( QDomDocument& doc ) const
|
|
{
|
|
QDomElement elem = doc.createElement( "attributeEditorField" );
|
|
elem.setAttribute( "name", mName );
|
|
elem.setAttribute( "index", mIdx );
|
|
return elem;
|
|
}
|
|
|
|
int QgsVectorLayer::listStylesInDatabase( QStringList &ids, QStringList &names, QStringList &descriptions, QString &msgError )
|
|
{
|
|
QgsProviderRegistry * pReg = QgsProviderRegistry::instance();
|
|
QLibrary *myLib = pReg->providerLibrary( mProviderKey );
|
|
if ( !myLib )
|
|
{
|
|
msgError = QObject::tr( "Unable to load %1 provider" ).arg( mProviderKey );
|
|
return -1;
|
|
}
|
|
listStyles_t* listStylesExternalMethod = ( listStyles_t * ) cast_to_fptr( myLib->resolve( "listStyles" ) );
|
|
|
|
if ( !listStylesExternalMethod )
|
|
{
|
|
delete myLib;
|
|
msgError = QObject::tr( "Provider %1 has no %2 method" ).arg( mProviderKey ).arg( "listStyles" );
|
|
return -1;
|
|
}
|
|
|
|
return listStylesExternalMethod( mDataSource, ids, names, descriptions, msgError );
|
|
}
|
|
|
|
QString QgsVectorLayer::getStyleFromDatabase( QString styleId, QString &msgError )
|
|
{
|
|
QgsProviderRegistry * pReg = QgsProviderRegistry::instance();
|
|
QLibrary *myLib = pReg->providerLibrary( mProviderKey );
|
|
if ( !myLib )
|
|
{
|
|
msgError = QObject::tr( "Unable to load %1 provider" ).arg( mProviderKey );
|
|
return QObject::tr( "" );
|
|
}
|
|
getStyleById_t* getStyleByIdMethod = ( getStyleById_t * ) cast_to_fptr( myLib->resolve( "getStyleById" ) );
|
|
|
|
if ( !getStyleByIdMethod )
|
|
{
|
|
delete myLib;
|
|
msgError = QObject::tr( "Provider %1 has no %2 method" ).arg( mProviderKey ).arg( "getStyleById" );
|
|
return QObject::tr( "" );
|
|
}
|
|
|
|
return getStyleByIdMethod( mDataSource, styleId, msgError );
|
|
}
|
|
|
|
|
|
void QgsVectorLayer::saveStyleToDatabase( QString name, QString description,
|
|
bool useAsDefault, QString uiFileContent, QString &msgError )
|
|
{
|
|
|
|
QString sldStyle, qmlStyle;
|
|
QgsProviderRegistry * pReg = QgsProviderRegistry::instance();
|
|
QLibrary *myLib = pReg->providerLibrary( mProviderKey );
|
|
if ( !myLib )
|
|
{
|
|
msgError = QObject::tr( "Unable to load %1 provider" ).arg( mProviderKey );
|
|
return;
|
|
}
|
|
saveStyle_t* saveStyleExternalMethod = ( saveStyle_t * ) cast_to_fptr( myLib->resolve( "saveStyle" ) );
|
|
|
|
if ( !saveStyleExternalMethod )
|
|
{
|
|
delete myLib;
|
|
msgError = QObject::tr( "Provider %1 has no %2 method" ).arg( mProviderKey ).arg( "saveStyle" );
|
|
return;
|
|
}
|
|
|
|
QDomDocument qmlDocument, sldDocument;
|
|
this->exportNamedStyle( qmlDocument, msgError );
|
|
if ( !msgError.isNull() )
|
|
{
|
|
return;
|
|
}
|
|
qmlStyle = qmlDocument.toString();
|
|
|
|
this->exportSldStyle( sldDocument, msgError );
|
|
if ( !msgError.isNull() )
|
|
{
|
|
return;
|
|
}
|
|
sldStyle = sldDocument.toString();
|
|
|
|
saveStyleExternalMethod( mDataSource, qmlStyle, sldStyle, name,
|
|
description, uiFileContent, useAsDefault, msgError );
|
|
}
|
|
|
|
|
|
|
|
QString QgsVectorLayer::loadNamedStyle( const QString theURI, bool &theResultFlag )
|
|
{
|
|
return loadNamedStyle( theURI, theResultFlag, false );
|
|
}
|
|
|
|
QString QgsVectorLayer::loadNamedStyle( const QString theURI, bool &theResultFlag , bool loadFromLocalDB )
|
|
{
|
|
QgsDataSourceURI dsUri( theURI );
|
|
if ( !loadFromLocalDB && !dsUri.database().isEmpty() )
|
|
{
|
|
QgsProviderRegistry * pReg = QgsProviderRegistry::instance();
|
|
QLibrary *myLib = pReg->providerLibrary( mProviderKey );
|
|
if ( myLib )
|
|
{
|
|
loadStyle_t* loadStyleExternalMethod = ( loadStyle_t * ) cast_to_fptr( myLib->resolve( "loadStyle" ) );
|
|
if ( loadStyleExternalMethod )
|
|
{
|
|
QString qml, errorMsg;
|
|
qml = loadStyleExternalMethod( mDataSource, errorMsg );
|
|
if ( !qml.isEmpty() )
|
|
{
|
|
theResultFlag = this->applyNamedStyle( qml, errorMsg );
|
|
return QObject::tr( "Loaded from Provider" );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return QgsMapLayer::loadNamedStyle( theURI, theResultFlag );
|
|
}
|
|
|
|
bool QgsVectorLayer::applyNamedStyle( QString namedStyle, QString errorMsg )
|
|
{
|
|
QDomDocument myDocument( "qgis" );
|
|
myDocument.setContent( namedStyle );
|
|
|
|
QDomElement myRoot = myDocument.firstChildElement( "qgis" );
|
|
|
|
if ( myRoot.isNull() )
|
|
{
|
|
errorMsg = tr( "Error: qgis element could not be found" );
|
|
return false;
|
|
}
|
|
toggleScaleBasedVisibility( myRoot.attribute( "hasScaleBasedVisibilityFlag" ).toInt() == 1 );
|
|
setMinimumScale( myRoot.attribute( "minimumScale" ).toFloat() );
|
|
setMaximumScale( myRoot.attribute( "maximumScale" ).toFloat() );
|
|
|
|
#if 0
|
|
//read transparency level
|
|
QDomNode transparencyNode = myRoot.namedItem( "transparencyLevelInt" );
|
|
if ( ! transparencyNode.isNull() )
|
|
{
|
|
// set transparency level only if it's in project
|
|
// (otherwise it sets the layer transparent)
|
|
QDomElement myElement = transparencyNode.toElement();
|
|
setTransparency( myElement.text().toInt() );
|
|
}
|
|
#endif
|
|
|
|
return readSymbology( myRoot, errorMsg );
|
|
}
|