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4624 lines
126 KiB
C++
4624 lines
126 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 "qgsvectorlayer.h"
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// renderers
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#include "qgscontinuouscolorrenderer.h"
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#include "qgsgraduatedsymbolrenderer.h"
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#include "qgsrenderer.h"
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#include "qgssinglesymbolrenderer.h"
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#include "qgsuniquevaluerenderer.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 "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 "qgsvectorlayercache.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 "qgsvectoroverlay.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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#ifdef TESTPROVIDERLIB
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#include <dlfcn.h>
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#endif
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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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, mRenderer( 0 )
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, mRendererV2( NULL )
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, mUsingRendererV2( false )
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, mLabel( 0 )
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, mLabelOn( false )
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, mVertexMarkerOnlyForSelection( false )
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, mCache( new QgsVectorLayerCache(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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{
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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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mJoinBuffer = new QgsVectorLayerJoinBuffer();
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updateFields();
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QSettings settings;
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//Changed to default to true as of QGIS 1.7
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//TODO: remove hack when http://hub.qgis.org/issues/5170 is fixed
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#ifdef ANDROID
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bool use_symbology_ng_default = false;
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#else
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bool use_symbology_ng_default = true;
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#endif
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if ( settings.value( "/qgis/use_symbology_ng", use_symbology_ng_default ).toBool() && hasGeometryType() )
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{
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// using symbology-ng!
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setUsingRendererV2( true );
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}
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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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if ( mUsingRendererV2 )
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{
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setRendererV2( QgsFeatureRendererV2::defaultRenderer( geometryType() ) );
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}
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else
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{
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QgsSingleSymbolRenderer *renderer = new QgsSingleSymbolRenderer( geometryType() );
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setRenderer( renderer );
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}
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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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} // 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 mRenderer;
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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 remaining overlays
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QList<QgsVectorOverlay*>::iterator overlayIt = mOverlays.begin();
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for ( ; overlayIt != mOverlays.end(); ++overlayIt )
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{
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delete *overlayIt;
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}
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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", false ) > -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", false ) > -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", false ) > -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 (( mRenderer || 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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if ( mRenderer )
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{
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attributes = mRenderer->classificationAttributes();
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}
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else if ( mRendererV2 )
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{
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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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}
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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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select( attributes, rendererContext.extent() );
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QgsFeature fet;
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while ( nextFeature( fet ) )
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{
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if (( mRenderer && mRenderer->willRenderFeature( &fet ) )
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|| ( mRendererV2 && 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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unsigned char *QgsVectorLayer::drawLineString( unsigned char *feature, QgsRenderContext &renderContext )
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{
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QPainter *p = renderContext.painter();
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unsigned char *ptr = feature + 5;
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unsigned int wkbType = *(( int* )( feature + 1 ) );
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int nPoints = *(( int* )ptr );
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ptr = feature + 9;
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bool hasZValue = ( wkbType == QGis::WKBLineString25D );
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QVector<double> x( nPoints );
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QVector<double> y( nPoints );
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QVector<double> z( nPoints, 0.0 );
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// Extract the points from the WKB format into the x and y vectors.
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for ( int i = 0; i < nPoints; ++i )
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{
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x[i] = *(( double * ) ptr );
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ptr += sizeof( double );
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y[i] = *(( double * ) ptr );
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ptr += sizeof( double );
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if ( hasZValue ) // ignore Z value
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ptr += sizeof( double );
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}
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// Transform the points into map coordinates (and reproject if
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// necessary)
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transformPoints( x, y, z, renderContext );
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// Work around a +/- 32768 limitation on coordinates
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// Look through the x and y coordinates and see if there are any
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// that need trimming. If one is found, there's no need to look at
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// the rest of them so end the loop at that point.
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for ( int i = 0; i < nPoints; ++i )
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{
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if ( qAbs( x.at( i ) ) > QgsClipper::MAX_X ||
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qAbs( y.at( i ) ) > QgsClipper::MAX_Y )
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{
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QgsClipper::trimFeature( x, y, true ); // true = polyline
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nPoints = x.size(); // trimming may change nPoints.
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break;
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}
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}
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// set up QPolygonF class with transformed points
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QPolygonF pa( nPoints );
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for ( int i = 0; i < nPoints; ++i )
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{
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pa[i].setX( x.at( i ) );
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pa[i].setY( y.at( i ) );
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}
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// The default pen gives bevelled joins between segements of the
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// polyline, which is good enough for the moment.
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//preserve a copy of the pen before we start fiddling with it
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QPen pen = p->pen(); // to be kept original
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//
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// experimental alpha transparency
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// 255 = opaque
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//
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QPen myTransparentPen = p->pen(); // store current pen
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QColor myColor = myTransparentPen.color();
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//only set transparency from layer level if renderer does not provide
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//transparency on class level
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if ( !mRenderer->usesTransparency() )
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{
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myColor.setAlpha( mTransparencyLevel );
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}
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myTransparentPen.setColor( myColor );
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p->setPen( myTransparentPen );
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p->drawPolyline( pa );
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// draw vertex markers if in editing mode, but only to the main canvas
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if ( mEditBuffer && renderContext.drawEditingInformation() )
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{
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QVector<double>::const_iterator xIt;
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QVector<double>::const_iterator yIt;
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for ( xIt = x.begin(), yIt = y.begin(); xIt != x.end(); ++xIt, ++yIt )
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{
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drawVertexMarker( *xIt, *yIt, *p, mCurrentVertexMarkerType, mCurrentVertexMarkerSize );
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}
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}
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//restore the pen
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p->setPen( pen );
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return ptr;
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}
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unsigned char *QgsVectorLayer::drawPolygon( unsigned char *feature, QgsRenderContext &renderContext )
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{
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QPainter *p = renderContext.painter();
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typedef QPair<QVector<double>, QVector<double> > ringType;
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typedef ringType* ringTypePtr;
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typedef QVector<ringTypePtr> ringsType;
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// get number of rings in the polygon
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unsigned int numRings = *(( int* )( feature + 1 + sizeof( int ) ) );
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if ( numRings == 0 ) // sanity check for zero rings in polygon
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return feature + 9;
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unsigned int wkbType = *(( int* )( feature + 1 ) );
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bool hasZValue = ( wkbType == QGis::WKBPolygon25D );
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int total_points = 0;
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// A vector containing a pointer to a pair of double vectors.The
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// first vector in the pair contains the x coordinates, and the
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// second the y coordinates.
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ringsType rings;
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// Set pointer to the first ring
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unsigned char* ptr = feature + 1 + 2 * sizeof( int );
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for ( register unsigned int idx = 0; idx < numRings; idx++ )
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{
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int nPoints = *(( int* )ptr );
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ringTypePtr ring = new ringType( QVector<double>( nPoints ), QVector<double>( nPoints ) );
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ptr += 4;
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// create a dummy vector for the z coordinate
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QVector<double> zVector( nPoints, 0.0 );
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// Extract the points from the WKB and store in a pair of
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// vectors.
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for ( int jdx = 0; jdx < nPoints; jdx++ )
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{
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ring->first[jdx] = *(( double * ) ptr );
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ptr += sizeof( double );
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ring->second[jdx] = *(( double * ) ptr );
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ptr += sizeof( double );
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if ( hasZValue )
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ptr += sizeof( double );
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}
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// If ring has fewer than two points, what is it then?
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// Anyway, this check prevents a crash
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if ( nPoints < 1 )
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{
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QgsDebugMsg( "Ring has only " + QString::number( nPoints ) + " points! Skipping this ring." );
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continue;
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}
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transformPoints( ring->first, ring->second, zVector, renderContext );
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|
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// Work around a +/- 32768 limitation on coordinates
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|
// Look through the x and y coordinates and see if there are any
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// that need trimming. If one is found, there's no need to look at
|
|
// the rest of them so end the loop at that point.
|
|
for ( int i = 0; i < nPoints; ++i )
|
|
{
|
|
if ( qAbs( ring->first[i] ) > QgsClipper::MAX_X ||
|
|
qAbs( ring->second[i] ) > QgsClipper::MAX_Y )
|
|
{
|
|
QgsClipper::trimFeature( ring->first, ring->second, false );
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Don't bother keeping the ring if it has been trimmed out of
|
|
// existence.
|
|
if ( ring->first.size() == 0 )
|
|
delete ring;
|
|
else
|
|
{
|
|
rings.push_back( ring );
|
|
total_points += ring->first.size();
|
|
}
|
|
}
|
|
|
|
// Now we draw the polygons
|
|
|
|
// use painter paths for drawing polygons with holes
|
|
// when adding polygon to the path they invert the area
|
|
// this means that adding inner rings to the path creates
|
|
// holes in outer ring
|
|
QPainterPath path; // OddEven fill rule by default
|
|
|
|
// Only try to draw polygons if there is something to draw
|
|
if ( total_points > 0 )
|
|
{
|
|
//preserve a copy of the brush and pen before we start fiddling with it
|
|
QBrush brush = p->brush(); //to be kept as original
|
|
QPen pen = p->pen(); // to be kept original
|
|
//
|
|
// experimental alpha transparency
|
|
// 255 = opaque
|
|
//
|
|
QBrush myTransparentBrush = p->brush();
|
|
QColor myColor = brush.color();
|
|
|
|
//only set transparency from layer level if renderer does not provide
|
|
//transparency on class level
|
|
if ( !mRenderer->usesTransparency() )
|
|
{
|
|
myColor.setAlpha( mTransparencyLevel );
|
|
}
|
|
myTransparentBrush.setColor( myColor );
|
|
QPen myTransparentPen = p->pen(); // store current pen
|
|
myColor = myTransparentPen.color();
|
|
|
|
//only set transparency from layer level if renderer does not provide
|
|
//transparency on class level
|
|
if ( !mRenderer->usesTransparency() )
|
|
{
|
|
myColor.setAlpha( mTransparencyLevel );
|
|
}
|
|
myTransparentPen.setColor( myColor );
|
|
|
|
p->setBrush( myTransparentBrush );
|
|
p->setPen( myTransparentPen );
|
|
|
|
if ( numRings == 1 )
|
|
{
|
|
ringTypePtr r = rings[0];
|
|
unsigned ringSize = r->first.size();
|
|
|
|
QPolygonF pa( ringSize );
|
|
for ( register unsigned int j = 0; j != ringSize; ++j )
|
|
{
|
|
pa[j].setX( r->first[j] );
|
|
pa[j].setY( r->second[j] );
|
|
}
|
|
p->drawPolygon( pa );
|
|
|
|
// draw vertex markers if in editing mode, but only to the main canvas
|
|
if ( mEditBuffer && renderContext.drawEditingInformation() )
|
|
{
|
|
for ( register unsigned int j = 0; j != ringSize; ++j )
|
|
{
|
|
drawVertexMarker( r->first[j], r->second[j], *p, mCurrentVertexMarkerType, mCurrentVertexMarkerSize );
|
|
}
|
|
}
|
|
|
|
delete rings[0];
|
|
}
|
|
else
|
|
{
|
|
// Store size here and use it in the loop to avoid penalty of
|
|
// multiple calls to size()
|
|
int numRings = rings.size();
|
|
for ( register int i = 0; i < numRings; ++i )
|
|
{
|
|
// Store the pointer in a variable with a short name so as to make
|
|
// the following code easier to type and read.
|
|
ringTypePtr r = rings[i];
|
|
// only do this once to avoid penalty of additional calls
|
|
unsigned ringSize = r->first.size();
|
|
|
|
// Transfer points to the array of QPointF
|
|
QPolygonF pa( ringSize );
|
|
for ( register unsigned int j = 0; j != ringSize; ++j )
|
|
{
|
|
pa[j].setX( r->first[j] );
|
|
pa[j].setY( r->second[j] );
|
|
}
|
|
|
|
path.addPolygon( pa );
|
|
|
|
// Tidy up the pointed to pairs of vectors as we finish with them
|
|
delete rings[i];
|
|
}
|
|
|
|
#if 0
|
|
// A bit of code to aid in working out what values of
|
|
// QgsClipper::minX, etc cause the X11 zoom bug.
|
|
int largestX = -std::numeric_limits<int>::max();
|
|
int smallestX = std::numeric_limits<int>::max();
|
|
int largestY = -std::numeric_limits<int>::max();
|
|
int smallestY = std::numeric_limits<int>::max();
|
|
|
|
for ( int i = 0; i < pa.size(); ++i )
|
|
{
|
|
largestX = qMax( largestX, pa.point( i ).x() );
|
|
smallestX = qMin( smallestX, pa.point( i ).x() );
|
|
largestY = qMax( largestY, pa.point( i ).y() );
|
|
smallestY = qMin( smallestY, pa.point( i ).y() );
|
|
}
|
|
QgsDebugMsg( QString( "Largest X coordinate was %1" ).arg( largestX ) );
|
|
QgsDebugMsg( QString( "Smallest X coordinate was %1" ).arg( smallestX ) );
|
|
QgsDebugMsg( QString( "Largest Y coordinate was %1" ).arg( largestY ) );
|
|
QgsDebugMsg( QString( "Smallest Y coordinate was %1" ).arg( smallestY ) );
|
|
#endif
|
|
|
|
//
|
|
// draw the polygon
|
|
//
|
|
p->drawPath( path );
|
|
|
|
// draw vertex markers if in editing mode, but only to the main canvas
|
|
if ( mEditBuffer && renderContext.drawEditingInformation() )
|
|
{
|
|
for ( int i = 0; i < path.elementCount(); ++i )
|
|
{
|
|
const QPainterPath::Element & e = path.elementAt( i );
|
|
drawVertexMarker( e.x, e.y, *p, mCurrentVertexMarkerType, mCurrentVertexMarkerSize );
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
//restore brush and pen to original
|
|
//
|
|
p->setBrush( brush );
|
|
p->setPen( pen );
|
|
|
|
} // totalPoints > 0
|
|
|
|
return ptr;
|
|
}
|
|
|
|
void QgsVectorLayer::drawRendererV2( QgsRenderContext& rendererContext, bool labeling )
|
|
{
|
|
if ( !hasGeometryType() )
|
|
return;
|
|
|
|
QSettings settings;
|
|
bool vertexMarkerOnlyForSelection = settings.value( "/qgis/digitizing/marker_only_for_selected", false ).toBool();
|
|
|
|
mRendererV2->startRender( rendererContext, this );
|
|
|
|
#ifndef Q_WS_MAC
|
|
int featureCount = 0;
|
|
#endif //Q_WS_MAC
|
|
|
|
QgsFeature fet;
|
|
while ( nextFeature( fet ) )
|
|
{
|
|
try
|
|
{
|
|
if ( !fet.geometry() )
|
|
continue; // skip features without geometry
|
|
|
|
if ( rendererContext.renderingStopped() )
|
|
{
|
|
break;
|
|
}
|
|
#ifndef Q_WS_MAC //MH: disable this on Mac for now to avoid problems with resizing
|
|
#ifdef Q_WS_X11
|
|
if ( !mEnableBackbuffer ) // do not handle events, as we're already inside a paint event
|
|
{
|
|
#endif // Q_WS_X11
|
|
if ( mUpdateThreshold > 0 && 0 == featureCount % mUpdateThreshold )
|
|
{
|
|
emit screenUpdateRequested();
|
|
// emit drawingProgress( featureCount, totalFeatures );
|
|
qApp->processEvents();
|
|
}
|
|
else if ( featureCount % 1000 == 0 )
|
|
{
|
|
// emit drawingProgress( featureCount, totalFeatures );
|
|
qApp->processEvents();
|
|
}
|
|
#ifdef Q_WS_X11
|
|
}
|
|
#endif // Q_WS_X11
|
|
#endif // Q_WS_MAC
|
|
|
|
bool sel = mSelectedFeatureIds.contains( fet.id() );
|
|
bool drawMarker = ( mEditBuffer && ( !vertexMarkerOnlyForSelection || sel ) );
|
|
|
|
// render feature
|
|
bool rendered = mRendererV2->renderFeature( fet, rendererContext, -1, sel, drawMarker );
|
|
|
|
if ( mEditBuffer )
|
|
{
|
|
// Cache this for the use of (e.g.) modifying the feature's uncommitted geometry.
|
|
mCache->cacheGeometry( fet.id(), *fet.geometry() );
|
|
}
|
|
|
|
// labeling - register feature
|
|
if ( rendered && rendererContext.labelingEngine() )
|
|
{
|
|
if ( labeling )
|
|
{
|
|
rendererContext.labelingEngine()->registerFeature( this, fet, rendererContext );
|
|
}
|
|
if ( mDiagramRenderer )
|
|
{
|
|
rendererContext.labelingEngine()->registerDiagramFeature( this, fet, rendererContext );
|
|
}
|
|
}
|
|
}
|
|
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, NULL );
|
|
|
|
#ifndef Q_WS_MAC
|
|
QgsDebugMsg( QString( "Total features processed %1" ).arg( featureCount ) );
|
|
#endif
|
|
}
|
|
|
|
void QgsVectorLayer::drawRendererV2Levels( QgsRenderContext& rendererContext, bool labeling )
|
|
{
|
|
if ( !hasGeometryType() )
|
|
return;
|
|
|
|
QHash< QgsSymbolV2*, QList<QgsFeature> > features; // key = symbol, value = array of features
|
|
|
|
QSettings settings;
|
|
bool vertexMarkerOnlyForSelection = settings.value( "/qgis/digitizing/marker_only_for_selected", false ).toBool();
|
|
|
|
// startRender must be called before symbolForFeature() calls to make sure renderer is ready
|
|
mRendererV2->startRender( rendererContext, this );
|
|
|
|
QgsSingleSymbolRendererV2* selRenderer = NULL;
|
|
if ( !mSelectedFeatureIds.isEmpty() )
|
|
{
|
|
selRenderer = new QgsSingleSymbolRendererV2( QgsSymbolV2::defaultSymbol( geometryType() ) );
|
|
selRenderer->symbol()->setColor( QgsRenderer::selectionColor() );
|
|
selRenderer->setVertexMarkerAppearance( currentVertexMarkerType(), currentVertexMarkerSize() );
|
|
selRenderer->startRender( rendererContext, this );
|
|
}
|
|
|
|
// 1. fetch features
|
|
QgsFeature fet;
|
|
#ifndef Q_WS_MAC
|
|
int featureCount = 0;
|
|
#endif //Q_WS_MAC
|
|
while ( nextFeature( fet ) )
|
|
{
|
|
if ( !fet.geometry() )
|
|
continue; // skip features without geometry
|
|
|
|
if ( rendererContext.renderingStopped() )
|
|
{
|
|
stopRendererV2( rendererContext, selRenderer );
|
|
return;
|
|
}
|
|
#ifndef Q_WS_MAC
|
|
if ( featureCount % 1000 == 0 )
|
|
{
|
|
qApp->processEvents();
|
|
}
|
|
#endif //Q_WS_MAC
|
|
QgsSymbolV2* sym = mRendererV2->symbolForFeature( fet );
|
|
if ( !sym )
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if ( !features.contains( sym ) )
|
|
{
|
|
features.insert( sym, QList<QgsFeature>() );
|
|
}
|
|
features[sym].append( fet );
|
|
|
|
if ( mEditBuffer )
|
|
{
|
|
// Cache this for the use of (e.g.) modifying the feature's uncommitted geometry.
|
|
mCache->cacheGeometry( fet.id(), *fet.geometry() );
|
|
}
|
|
|
|
if ( sym && rendererContext.labelingEngine() )
|
|
{
|
|
if ( labeling )
|
|
{
|
|
rendererContext.labelingEngine()->registerFeature( this, fet, rendererContext );
|
|
}
|
|
if ( mDiagramRenderer )
|
|
{
|
|
rendererContext.labelingEngine()->registerDiagramFeature( this, fet, rendererContext );
|
|
}
|
|
}
|
|
|
|
#ifndef Q_WS_MAC
|
|
++featureCount;
|
|
#endif //Q_WS_MAC
|
|
}
|
|
|
|
// find out the order
|
|
QgsSymbolV2LevelOrder levels;
|
|
QgsSymbolV2List symbols = mRendererV2->symbols();
|
|
for ( int i = 0; i < symbols.count(); i++ )
|
|
{
|
|
QgsSymbolV2* sym = symbols[i];
|
|
for ( int j = 0; j < sym->symbolLayerCount(); j++ )
|
|
{
|
|
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();
|
|
#ifdef Q_WS_X11
|
|
mEnableBackbuffer = settings.value( "/Map/enableBackbuffer", 1 ).toBool();
|
|
#endif
|
|
|
|
if ( mUsingRendererV2 )
|
|
{
|
|
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 );
|
|
|
|
select( attributes, rendererContext.extent() );
|
|
|
|
if (( mRendererV2->capabilities() & QgsFeatureRendererV2::SymbolLevels )
|
|
&& mRendererV2->usingSymbolLevels() )
|
|
drawRendererV2Levels( rendererContext, labeling );
|
|
else
|
|
drawRendererV2( rendererContext, labeling );
|
|
|
|
return true;
|
|
}
|
|
|
|
//draw ( p, viewExtent, theMapToPixelTransform, ct, drawingToEditingCanvas, 1., 1.);
|
|
|
|
if ( mRenderer )
|
|
{
|
|
// painter is active (begin has been called
|
|
/* Steps to draw the layer
|
|
1. get the features in the view extent by SQL query
|
|
2. read WKB for a feature
|
|
3. transform
|
|
4. draw
|
|
*/
|
|
|
|
QPen pen;
|
|
/*Pointer to a marker image*/
|
|
QImage marker;
|
|
//vertex marker type for selection
|
|
QgsVectorLayer::VertexMarkerType vertexMarker = QgsVectorLayer::NoMarker;
|
|
int vertexMarkerSize = 7;
|
|
|
|
if ( mEditBuffer )
|
|
{
|
|
// Destroy all cached geometries and clear the references to them
|
|
mCache->deleteCachedGeometries();
|
|
mCache->setCachedGeometriesRect( rendererContext.extent() );
|
|
vertexMarker = currentVertexMarkerType();
|
|
vertexMarkerSize = currentVertexMarkerSize();
|
|
mVertexMarkerOnlyForSelection = settings.value( "/qgis/digitizing/marker_only_for_selected", false ).toBool();
|
|
}
|
|
|
|
// int totalFeatures = pendingFeatureCount();
|
|
int featureCount = 0;
|
|
QgsFeature fet;
|
|
QgsAttributeList attributes = mRenderer->classificationAttributes();
|
|
|
|
bool labeling = false;
|
|
prepareLabelingAndDiagrams( rendererContext, attributes, labeling );
|
|
|
|
select( attributes, rendererContext.extent() );
|
|
|
|
try
|
|
{
|
|
while ( nextFeature( fet ) )
|
|
{
|
|
if ( !fet.geometry() )
|
|
continue; // skip features without geometry
|
|
|
|
if ( rendererContext.renderingStopped() )
|
|
{
|
|
break;
|
|
}
|
|
|
|
#ifndef Q_WS_MAC //MH: disable this on Mac for now to avoid problems with resizing
|
|
if ( mUpdateThreshold > 0 && 0 == featureCount % mUpdateThreshold )
|
|
{
|
|
emit screenUpdateRequested();
|
|
// emit drawingProgress( featureCount, totalFeatures );
|
|
qApp->processEvents();
|
|
}
|
|
else if ( featureCount % 1000 == 0 )
|
|
{
|
|
// emit drawingProgress( featureCount, totalFeatures );
|
|
qApp->processEvents();
|
|
}
|
|
// #else
|
|
// Q_UNUSED( totalFeatures );
|
|
#endif //Q_WS_MAC
|
|
|
|
// check if feature is selected
|
|
// only show selections of the current layer
|
|
// TODO: create a mechanism to let layer know whether it's current layer or not [MD]
|
|
bool sel = mSelectedFeatureIds.contains( fet.id() );
|
|
|
|
mCurrentVertexMarkerType = QgsVectorLayer::NoMarker;
|
|
mCurrentVertexMarkerSize = 7;
|
|
|
|
if ( mEditBuffer )
|
|
{
|
|
// Cache this for the use of (e.g.) modifying the feature's uncommitted geometry.
|
|
mCache->cacheGeometry( fet.id(), *fet.geometry() );
|
|
|
|
if ( !mVertexMarkerOnlyForSelection || sel )
|
|
{
|
|
mCurrentVertexMarkerType = vertexMarker;
|
|
mCurrentVertexMarkerSize = vertexMarkerSize;
|
|
}
|
|
}
|
|
|
|
//QgsDebugMsg(QString("markerScale before renderFeature(): %1").arg(markerScaleFactor));
|
|
// markerScalerFactore reflects the wanted scaling of the marker
|
|
|
|
double opacity = 1.0;
|
|
if ( !mRenderer->usesTransparency() )
|
|
{
|
|
opacity = ( mTransparencyLevel * 1.0 ) / 255.0;
|
|
}
|
|
mRenderer->renderFeature( rendererContext, fet, &marker, sel, opacity );
|
|
|
|
// markerScalerFactore now reflects the actual scaling of the marker that the render performed.
|
|
//QgsDebugMsg(QString("markerScale after renderFeature(): %1").arg(markerScaleFactor));
|
|
|
|
//double scale = rendererContext.scaleFactor() / markerScaleFactor;
|
|
drawFeature( rendererContext, fet, &marker );
|
|
|
|
if ( mRenderer->willRenderFeature( &fet ) && rendererContext.labelingEngine() )
|
|
{
|
|
if ( labeling )
|
|
{
|
|
rendererContext.labelingEngine()->registerFeature( this, fet, rendererContext );
|
|
}
|
|
if ( mDiagramRenderer )
|
|
{
|
|
rendererContext.labelingEngine()->registerDiagramFeature( this, fet, rendererContext );
|
|
}
|
|
}
|
|
++featureCount;
|
|
}
|
|
}
|
|
catch ( QgsCsException &cse )
|
|
{
|
|
Q_UNUSED( cse );
|
|
QgsDebugMsg( QString( "Failed to transform a point while drawing a feature with ID '%1'. Rendering stopped. %2" )
|
|
.arg( fet.id() ).arg( cse.what() ) );
|
|
return false;
|
|
}
|
|
|
|
QgsDebugMsg( QString( "Total features processed %1" ).arg( featureCount ) );
|
|
}
|
|
else
|
|
{
|
|
QgsDebugMsg( "QgsRenderer is null" );
|
|
}
|
|
|
|
if ( mEditBuffer )
|
|
{
|
|
QgsDebugMsg( QString( "Cached %1 geometries." ).arg( mCache->cachedGeometries().count() ) );
|
|
}
|
|
|
|
return true; // Assume success always
|
|
}
|
|
|
|
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( QgsFeatureId fid, bool emitSignal )
|
|
{
|
|
mSelectedFeatureIds.insert( fid );
|
|
|
|
if ( emitSignal )
|
|
{
|
|
// invalidate cache
|
|
setCacheImage( 0 );
|
|
|
|
emit selectionChanged();
|
|
}
|
|
}
|
|
|
|
void QgsVectorLayer::deselect( QgsFeatureId fid, bool emitSignal )
|
|
{
|
|
mSelectedFeatureIds.remove( fid );
|
|
|
|
if ( emitSignal )
|
|
{
|
|
// invalidate cache
|
|
setCacheImage( 0 );
|
|
|
|
emit selectionChanged();
|
|
}
|
|
}
|
|
|
|
void QgsVectorLayer::select( QgsRectangle & rect, bool lock )
|
|
{
|
|
// normalize the rectangle
|
|
rect.normalize();
|
|
|
|
if ( !lock )
|
|
{
|
|
removeSelection( false ); // don't emit signal
|
|
}
|
|
|
|
//select all the elements
|
|
select( QgsAttributeList(), rect, false, true );
|
|
|
|
QgsFeature f;
|
|
while ( nextFeature( f ) )
|
|
{
|
|
select( f.id(), false ); // don't emit signal (not to redraw it everytime)
|
|
}
|
|
|
|
// invalidate cache
|
|
setCacheImage( 0 );
|
|
|
|
emit selectionChanged(); // now emit signal to redraw layer
|
|
}
|
|
|
|
void QgsVectorLayer::invertSelection()
|
|
{
|
|
// copy the ids of selected features to tmp
|
|
QgsFeatureIds tmp = mSelectedFeatureIds;
|
|
|
|
removeSelection( false ); // don't emit signal
|
|
|
|
select( QgsAttributeList(), QgsRectangle(), false );
|
|
|
|
QgsFeature fet;
|
|
while ( nextFeature( fet ) )
|
|
{
|
|
select( fet.id(), false ); // don't emit signal
|
|
}
|
|
|
|
for ( QgsFeatureIds::iterator iter = tmp.begin(); iter != tmp.end(); ++iter )
|
|
{
|
|
mSelectedFeatureIds.remove( *iter );
|
|
}
|
|
|
|
// invalidate cache
|
|
setCacheImage( 0 );
|
|
|
|
emit selectionChanged();
|
|
}
|
|
|
|
void QgsVectorLayer::invertSelectionInRectangle( QgsRectangle & rect )
|
|
{
|
|
// normalize the rectangle
|
|
rect.normalize();
|
|
|
|
select( QgsAttributeList(), rect, false, true );
|
|
|
|
QgsFeature fet;
|
|
while ( nextFeature( fet ) )
|
|
{
|
|
if ( mSelectedFeatureIds.contains( fet.id() ) )
|
|
{
|
|
deselect( fet.id(), false ); // don't emit signal
|
|
}
|
|
else
|
|
{
|
|
select( fet.id(), false ); // don't emit signal
|
|
}
|
|
}
|
|
|
|
// invalidate cache
|
|
setCacheImage( 0 );
|
|
|
|
emit selectionChanged();
|
|
}
|
|
|
|
void QgsVectorLayer::removeSelection( bool emitSignal )
|
|
{
|
|
if ( mSelectedFeatureIds.size() == 0 )
|
|
return;
|
|
|
|
mSelectedFeatureIds.clear();
|
|
|
|
if ( emitSignal )
|
|
{
|
|
// invalidate cache
|
|
setCacheImage( 0 );
|
|
|
|
emit selectionChanged();
|
|
}
|
|
}
|
|
|
|
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 );
|
|
}
|
|
}
|
|
|
|
|
|
const QgsRenderer* QgsVectorLayer::renderer() const
|
|
{
|
|
return mRenderer;
|
|
}
|
|
|
|
void QgsVectorLayer::setRenderer( QgsRenderer *r )
|
|
{
|
|
if ( !hasGeometryType() )
|
|
return;
|
|
|
|
if ( r != mRenderer )
|
|
{
|
|
if ( r )
|
|
setUsingRendererV2( false );
|
|
delete mRenderer;
|
|
mRenderer = r;
|
|
}
|
|
}
|
|
|
|
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 ( featureAtId( fid, fet, true, false ) && fet.geometry() )
|
|
{
|
|
r = fet.geometry()->boundingBox();
|
|
retval.combineExtentWith( &r );
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
select( QgsAttributeList(), QgsRectangle(), true );
|
|
|
|
while ( 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;
|
|
|
|
select( pendingAllAttributesList(), QgsRectangle(), false, false );
|
|
QgsFeature f;
|
|
|
|
// Renderer (rule based) may depend on context scale, with scale is ignored if 0
|
|
QgsRenderContext renderContext;
|
|
renderContext.setRendererScale( 0 );
|
|
mRendererV2->startRender( renderContext, this );
|
|
|
|
while ( 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;
|
|
}
|
|
|
|
long QgsVectorLayer::updateFeatureCount() const
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
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
|
|
{
|
|
select( QgsAttributeList(), QgsRectangle(), true );
|
|
|
|
QgsFeature fet;
|
|
while ( nextFeature( fet ) )
|
|
{
|
|
if ( fet.geometry() )
|
|
{
|
|
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;
|
|
}
|
|
|
|
#if 0
|
|
void QgsVectorLayer::addJoinedAttributes( QgsFeature& f, bool all )
|
|
{
|
|
if ( all || ( mFetchAttributes.size() > 0 && mJoinBuffer->containsFetchJoins() ) )
|
|
{
|
|
mJoinBuffer->updateFeatureAttributes( f, f.attributes().count(), all );
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
void QgsVectorLayer::select( QgsAttributeList attributes, QgsRectangle rect, bool fetchGeometries, bool useIntersect )
|
|
{
|
|
#if 0
|
|
if ( !mDataProvider )
|
|
return;
|
|
|
|
mFetching = true;
|
|
mFetchRect = rect;
|
|
mFetchAttributes = attributes;
|
|
mFetchGeometry = fetchGeometries;
|
|
mFetchConsidered = mEditBuffer ? mEditBuffer->mDeletedFeatureIds : QSet<QgsFeatureId>();
|
|
QgsAttributeList targetJoinFieldList;
|
|
|
|
if ( mEditBuffer )
|
|
{
|
|
mFetchAddedFeaturesIt = mEditBuffer->mAddedFeatures.begin();
|
|
mFetchChangedGeomIt = mEditBuffer->mChangedGeometries.begin();
|
|
}
|
|
|
|
//look in the normal features of the provider
|
|
if ( mFetchAttributes.size() > 0 )
|
|
{
|
|
if ( mEditBuffer || mJoinBuffer->containsJoins() )
|
|
{
|
|
QgsAttributeList joinFields;
|
|
|
|
mJoinBuffer->select( mFetchAttributes, joinFields, mUpdatedFields );
|
|
QgsAttributeList::const_iterator joinFieldIt = joinFields.constBegin();
|
|
for ( ; joinFieldIt != joinFields.constEnd(); ++joinFieldIt )
|
|
{
|
|
if ( !mFetchAttributes.contains( *joinFieldIt ) )
|
|
{
|
|
mFetchAttributes.append( *joinFieldIt );
|
|
}
|
|
}
|
|
|
|
//detect which fields are from the provider
|
|
mFetchProvAttributes.clear();
|
|
const QgsFields& provFields = mDataProvider->fields();
|
|
for ( QgsAttributeList::iterator it = mFetchAttributes.begin(); it != mFetchAttributes.end(); it++ )
|
|
{
|
|
if ( *it < provFields.count() )
|
|
{
|
|
mFetchProvAttributes << *it;
|
|
}
|
|
}
|
|
|
|
mProviderIterator = mDataProvider->select( mFetchProvAttributes, rect, fetchGeometries, useIntersect );
|
|
}
|
|
else
|
|
{
|
|
mProviderIterator = mDataProvider->select( mFetchAttributes, rect, fetchGeometries, useIntersect );
|
|
}
|
|
}
|
|
else //we don't need any attributes at all
|
|
{
|
|
mProviderIterator = mDataProvider->select( QgsAttributeList(), rect, fetchGeometries, useIntersect );
|
|
}
|
|
#endif
|
|
|
|
QgsFeatureRequest request;
|
|
if ( !rect.isEmpty() )
|
|
request.setFilterRect( rect );
|
|
if ( !fetchGeometries )
|
|
request.setFlags( QgsFeatureRequest::NoGeometry );
|
|
if ( useIntersect )
|
|
request.setFlags( request.flags() | QgsFeatureRequest::ExactIntersect );
|
|
if ( attributes != pendingAllAttributesList() )
|
|
request.setSubsetOfAttributes( attributes );
|
|
|
|
mLayerIterator = getFeatures( request );
|
|
}
|
|
|
|
|
|
#if 0
|
|
void QgsVectorLayer::select( const QgsFeatureRequest& request )
|
|
{
|
|
mLayerIterator = getFeatures( request );
|
|
|
|
/*
|
|
QgsAttributeList attrs;
|
|
if ( !( request.flags() & QgsFeatureRequest::SubsetOfAttributes ) )
|
|
attrs = request.subsetOfAttributes();
|
|
else
|
|
attrs = pendingAllAttributesList();
|
|
bool fetchGeom = !( request.flags() & QgsFeatureRequest::NoGeometry );
|
|
bool exactIntersect = ( request.flags() & QgsFeatureRequest::ExactIntersect );
|
|
select( attrs, request.filterRect(), fetchGeom, exactIntersect );
|
|
*/
|
|
}
|
|
#endif
|
|
|
|
|
|
QgsFeatureIterator QgsVectorLayer::getFeatures( const QgsFeatureRequest& request )
|
|
{
|
|
if ( !mDataProvider )
|
|
return QgsFeatureIterator();
|
|
|
|
return QgsFeatureIterator( new QgsVectorLayerFeatureIterator(this, request) );
|
|
}
|
|
|
|
|
|
bool QgsVectorLayer::nextFeature( QgsFeature &f )
|
|
{
|
|
return mLayerIterator.nextFeature( f );
|
|
|
|
#if 0
|
|
if ( !mFetching )
|
|
return false;
|
|
|
|
if ( mEditBuffer )
|
|
{
|
|
if ( !mFetchRect.isEmpty() )
|
|
{
|
|
// check if changed geometries are in rectangle
|
|
for ( ; mFetchChangedGeomIt != mEditBuffer->mChangedGeometries.end(); mFetchChangedGeomIt++ )
|
|
{
|
|
QgsFeatureId fid = mFetchChangedGeomIt.key();
|
|
|
|
if ( mFetchConsidered.contains( fid ) )
|
|
// skip deleted features
|
|
continue;
|
|
|
|
mFetchConsidered << fid;
|
|
|
|
if ( !mFetchChangedGeomIt->intersects( mFetchRect ) )
|
|
// skip changed geometries not in rectangle and don't check again
|
|
continue;
|
|
|
|
f.setFeatureId( fid );
|
|
f.setValid( true );
|
|
|
|
if ( mFetchGeometry )
|
|
f.setGeometry( mFetchChangedGeomIt.value() );
|
|
|
|
if ( mFetchAttributes.size() > 0 )
|
|
{
|
|
if ( fid < 0 )
|
|
{
|
|
// fid<0 => in mAddedFeatures
|
|
bool found = false;
|
|
|
|
for ( QgsFeatureList::iterator it = mEditBuffer->mAddedFeatures.begin(); it != mEditBuffer->mAddedFeatures.end(); it++ )
|
|
{
|
|
if ( fid == it->id() )
|
|
{
|
|
found = true;
|
|
f.setAttributes( it->attributes() );
|
|
// no need to update (always up-to-date) updateFeatureAttributes( f );
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( !found )
|
|
{
|
|
QgsDebugMsg( QString( "No attributes for the added feature %1 found" ).arg( f.id() ) );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// retrieve attributes from provider
|
|
QgsFeature tmp;
|
|
//mDataProvider->featureAtId( fid, tmp, false, mFetchProvAttributes );
|
|
QgsFeatureRequest request;
|
|
request.setFilterFid( fid ).setSubsetOfAttributes( mFetchProvAttributes );
|
|
QgsFeatureIterator fi = mDataProvider->getFeatures( request );
|
|
if ( fi.nextFeature( tmp ) )
|
|
{
|
|
if (mEditBuffer)
|
|
mEditBuffer->updateChangedAttributes( tmp );
|
|
f.setAttributes( tmp.attributes() );
|
|
}
|
|
}
|
|
}
|
|
|
|
addJoinedAttributes( f );
|
|
|
|
// return complete feature
|
|
mFetchChangedGeomIt++;
|
|
return true;
|
|
}
|
|
|
|
// no more changed geometries
|
|
}
|
|
|
|
for ( ; mFetchAddedFeaturesIt != mEditBuffer->mAddedFeatures.end(); mFetchAddedFeaturesIt++ )
|
|
{
|
|
QgsFeatureId fid = mFetchAddedFeaturesIt->id();
|
|
|
|
if ( mFetchConsidered.contains( fid ) )
|
|
// must have changed geometry outside rectangle
|
|
continue;
|
|
|
|
if ( !mFetchRect.isEmpty() &&
|
|
mFetchAddedFeaturesIt->geometry() &&
|
|
!mFetchAddedFeaturesIt->geometry()->intersects( mFetchRect ) )
|
|
// skip added features not in rectangle
|
|
continue;
|
|
|
|
f.setFeatureId( fid );
|
|
f.setValid( true );
|
|
|
|
if ( mFetchGeometry )
|
|
f.setGeometry( *mFetchAddedFeaturesIt->geometry() );
|
|
|
|
if ( mFetchAttributes.size() > 0 )
|
|
{
|
|
f.setAttributes( mFetchAddedFeaturesIt->attributes() );
|
|
// no need to do this (always up-to-date) updateFeatureAttributes( f );
|
|
}
|
|
|
|
addJoinedAttributes( f );
|
|
|
|
mFetchAddedFeaturesIt++;
|
|
return true;
|
|
}
|
|
|
|
// no more added features
|
|
}
|
|
|
|
while ( mProviderIterator.nextFeature( f ) )
|
|
{
|
|
if ( mFetchConsidered.contains( f.id() ) )
|
|
{
|
|
continue;
|
|
}
|
|
if ( mFetchAttributes.size() > 0 )
|
|
{
|
|
if (mEditBuffer)
|
|
mEditBuffer->updateChangedAttributes( f ); //check changed attributes
|
|
addJoinedAttributes( f ); // check joined attributes
|
|
}
|
|
if ( mEditBuffer && mFetchGeometry )
|
|
{
|
|
mEditBuffer->updateFeatureGeometry( f );
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
mFetching = false;
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
bool QgsVectorLayer::featureAtId( QgsFeatureId featureId, QgsFeature& f, bool fetchGeometries, bool fetchAttributes )
|
|
{
|
|
QgsFeatureRequest request;
|
|
request.setFilterFid( featureId );
|
|
if ( !fetchGeometries )
|
|
request.setFlags( QgsFeatureRequest::NoGeometry );
|
|
if ( !fetchAttributes )
|
|
request.setSubsetOfAttributes( QgsAttributeList() );
|
|
|
|
QgsFeatureIterator fi = getFeatures( request );
|
|
return fi.nextFeature( f );
|
|
|
|
#if 0
|
|
if ( !mDataProvider )
|
|
return false;
|
|
|
|
if ( mEditBuffer && mEditBuffer->mDeletedFeatureIds.contains( featureId ) )
|
|
return false;
|
|
|
|
if ( fetchGeometries && mEditBuffer->mChangedGeometries.contains( featureId ) )
|
|
{
|
|
f.setFeatureId( featureId );
|
|
f.setValid( true );
|
|
f.setGeometry( mEditBuffer->mChangedGeometries[featureId] );
|
|
|
|
if ( fetchAttributes )
|
|
{
|
|
if ( featureId < 0 && mEditBuffer )
|
|
{
|
|
// featureId<0 => in mAddedFeatures
|
|
bool found = false;
|
|
|
|
for ( QgsFeatureList::iterator it = mEditBuffer->mAddedFeatures.begin(); it != mEditBuffer->mAddedFeatures.end(); it++ )
|
|
{
|
|
if ( featureId != it->id() )
|
|
{
|
|
found = true;
|
|
f.setAttributes( it->attributes() );
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( !found )
|
|
{
|
|
QgsDebugMsg( QString( "No attributes for the added feature %1 found" ).arg( f.id() ) );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// retrieve attributes from provider
|
|
QgsFeature tmp;
|
|
//mDataProvider->featureAtId( featureId, tmp, false, mDataProvider->attributeIndexes() );
|
|
QgsFeatureRequest request;
|
|
request.setFilterFid( featureId ).setFlags( QgsFeatureRequest::NoGeometry );
|
|
QgsFeatureIterator fi = mDataProvider->getFeatures( request );
|
|
if ( fi.nextFeature( tmp ) )
|
|
{
|
|
f.setAttributes( tmp.attributes() );
|
|
if (mEditBuffer)
|
|
mEditBuffer->updateChangedAttributes( f );
|
|
}
|
|
}
|
|
addJoinedAttributes( f, true );
|
|
}
|
|
return true;
|
|
}
|
|
|
|
//added features
|
|
if (mEditBuffer)
|
|
{
|
|
for ( QgsFeatureList::iterator iter = mEditBuffer->mAddedFeatures.begin(); iter != mEditBuffer->mAddedFeatures.end(); ++iter )
|
|
{
|
|
if ( iter->id() == featureId )
|
|
{
|
|
f.setFeatureId( iter->id() );
|
|
f.setValid( true );
|
|
if ( fetchGeometries )
|
|
f.setGeometry( *iter->geometry() );
|
|
|
|
if ( fetchAttributes )
|
|
f.setAttributes( iter->attributes() );
|
|
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// regular features
|
|
QgsFeatureRequest request;
|
|
request.setFilterFid( featureId );
|
|
if ( !fetchGeometries )
|
|
request.setFlags( QgsFeatureRequest::NoGeometry );
|
|
if ( !fetchAttributes )
|
|
request.setSubsetOfAttributes( QgsAttributeList() );
|
|
|
|
QgsFeatureIterator fi = mDataProvider->getFeatures( request );
|
|
if ( fi.nextFeature( f ) )
|
|
{
|
|
if (mEditBuffer)
|
|
mEditBuffer->updateChangedAttributes( f );
|
|
addJoinedAttributes( f, true );
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
bool QgsVectorLayer::addFeature( QgsFeature& f, bool alsoUpdateExtent )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return false;
|
|
|
|
// TODO[MD]: alsoUpdateExtent
|
|
return mEditBuffer->addFeature(f);
|
|
}
|
|
|
|
bool QgsVectorLayer::updateFeature( QgsFeature &f )
|
|
{
|
|
QgsFeature current;
|
|
if ( !featureAtId( f.id(), current, f.geometry(), !f.attributes().isEmpty() ) )
|
|
{
|
|
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 );
|
|
|
|
emit selectionChanged();
|
|
|
|
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::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
|
|
select( QgsAttributeList(), geomBBox, true, true );
|
|
|
|
QgsFeature f;
|
|
while ( 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, 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)));
|
|
|
|
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 ) ) );
|
|
|
|
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();
|
|
|
|
// 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::qgisVectorGeometryType[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 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 )
|
|
{
|
|
if ( hasGeometryType() )
|
|
{
|
|
// try renderer v2 first
|
|
QDomElement rendererElement = node.firstChildElement( RENDERER_TAG_NAME );
|
|
if ( !rendererElement.isNull() )
|
|
{
|
|
// using renderer v2
|
|
setUsingRendererV2( true );
|
|
|
|
QgsFeatureRendererV2* r = QgsFeatureRendererV2::load( rendererElement );
|
|
if ( !r )
|
|
return false;
|
|
|
|
setRendererV2( r );
|
|
}
|
|
else
|
|
{
|
|
// using renderer v1
|
|
setUsingRendererV2( false );
|
|
|
|
// create and bind a renderer to this layer
|
|
|
|
QDomNode singlenode = node.namedItem( "singlesymbol" );
|
|
QDomNode graduatednode = node.namedItem( "graduatedsymbol" );
|
|
QDomNode continuousnode = node.namedItem( "continuoussymbol" );
|
|
QDomNode uniquevaluenode = node.namedItem( "uniquevalue" );
|
|
|
|
QgsRenderer * renderer = 0;
|
|
int returnCode = 1;
|
|
|
|
if ( !singlenode.isNull() )
|
|
{
|
|
renderer = new QgsSingleSymbolRenderer( geometryType() );
|
|
returnCode = renderer->readXML( singlenode, *this );
|
|
}
|
|
else if ( !graduatednode.isNull() )
|
|
{
|
|
renderer = new QgsGraduatedSymbolRenderer( geometryType() );
|
|
returnCode = renderer->readXML( graduatednode, *this );
|
|
}
|
|
else if ( !continuousnode.isNull() )
|
|
{
|
|
renderer = new QgsContinuousColorRenderer( geometryType() );
|
|
returnCode = renderer->readXML( continuousnode, *this );
|
|
}
|
|
else if ( !uniquevaluenode.isNull() )
|
|
{
|
|
renderer = new QgsUniqueValueRenderer( geometryType() );
|
|
returnCode = renderer->readXML( uniquevaluenode, *this );
|
|
}
|
|
|
|
if ( !renderer )
|
|
{
|
|
errorMessage = tr( "Unknown renderer" );
|
|
return false;
|
|
}
|
|
|
|
if ( returnCode == 1 )
|
|
{
|
|
errorMessage = tr( "No renderer object" );
|
|
delete renderer;
|
|
return false;
|
|
}
|
|
else if ( returnCode == 2 )
|
|
{
|
|
errorMessage = tr( "Classification field not found" );
|
|
delete renderer;
|
|
return false;
|
|
}
|
|
|
|
mRenderer = renderer;
|
|
}
|
|
|
|
// get and set the display field if it exists.
|
|
QDomNode displayFieldNode = node.namedItem( "displayfield" );
|
|
if ( !displayFieldNode.isNull() )
|
|
{
|
|
QDomElement e = displayFieldNode.toElement();
|
|
setDisplayField( e.text() );
|
|
}
|
|
|
|
// 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" );
|
|
|
|
// 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;
|
|
}
|
|
}
|
|
|
|
// 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 );
|
|
}
|
|
QDomElement linearDiagramElem = node.firstChildElement( "LinearlyInterpolatedDiagramRenderer" );
|
|
if ( !linearDiagramElem.isNull() )
|
|
{
|
|
mDiagramRenderer = new QgsLinearlyInterpolatedDiagramRenderer();
|
|
mDiagramRenderer->readXML( linearDiagramElem );
|
|
}
|
|
|
|
if ( mDiagramRenderer )
|
|
{
|
|
QDomElement diagramSettingsElem = node.firstChildElement( "DiagramLayerSettings" );
|
|
if ( !diagramSettingsElem.isNull() )
|
|
{
|
|
mDiagramLayerSettings = new QgsDiagramLayerSettings();
|
|
mDiagramLayerSettings->readXML( diagramSettingsElem );
|
|
}
|
|
}
|
|
}
|
|
|
|
// 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 );
|
|
|
|
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 filterAttributeColumn = editTypeElement.attribute( "filterAttributeColumn", QString::null );
|
|
QString filterAttributeValue = editTypeElement.attribute( "filterAttributeValue", QString::null );
|
|
mValueRelations[ name ] = ValueRelationData( id, key, value, allowNull, orderByValue, allowMulti, filterAttributeColumn, filterAttributeValue );
|
|
}
|
|
break;
|
|
|
|
case Classification:
|
|
case FileName:
|
|
case Immutable:
|
|
case Hidden:
|
|
case LineEdit:
|
|
case TextEdit:
|
|
case Calendar:
|
|
case Enumeration:
|
|
case UniqueValues:
|
|
case UniqueValuesEditable:
|
|
case UuidGenerator:
|
|
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 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" ) );
|
|
}
|
|
}
|
|
|
|
|
|
//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" )
|
|
{
|
|
newElement = new QgsAttributeEditorField( elem.attribute( "name" ), elem.attribute( "idx" ).toInt(), parent );
|
|
}
|
|
|
|
return newElement;
|
|
}
|
|
|
|
bool QgsVectorLayer::writeSymbology( QDomNode& node, QDomDocument& doc, QString& errorMessage ) const
|
|
{
|
|
QDomElement mapLayerNode = node.toElement();
|
|
|
|
if ( hasGeometryType() )
|
|
{
|
|
if ( mUsingRendererV2 )
|
|
{
|
|
QDomElement rendererElement = mRendererV2->save( doc );
|
|
node.appendChild( rendererElement );
|
|
}
|
|
else
|
|
{
|
|
// 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() ) );
|
|
|
|
//classification field(s)
|
|
QgsAttributeList attributes = mRenderer->classificationAttributes();
|
|
const QgsFields& providerFields = mDataProvider->fields();
|
|
for ( QgsAttributeList::const_iterator it = attributes.begin(); it != attributes.end(); ++it )
|
|
{
|
|
QDomElement classificationElement = doc.createElement( "classificationattribute" );
|
|
QDomText classificationText = doc.createTextNode( providerFields[*it].name() );
|
|
classificationElement.appendChild( classificationText );
|
|
node.appendChild( classificationElement );
|
|
}
|
|
|
|
// renderer settings
|
|
const QgsRenderer * myRenderer = renderer();
|
|
if ( myRenderer )
|
|
{
|
|
if ( !myRenderer->writeXML( node, doc, *this ) )
|
|
{
|
|
errorMessage = tr( "renderer failed to save" );
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
QgsDebugMsg( "no renderer" );
|
|
errorMessage = tr( "no renderer" );
|
|
return false;
|
|
}
|
|
}
|
|
|
|
//save customproperties (for labeling ng)
|
|
writeCustomProperties( node, doc );
|
|
|
|
// 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 );
|
|
|
|
// 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 );
|
|
if ( mDiagramLayerSettings )
|
|
mDiagramLayerSettings->writeXML( mapLayerNode, doc );
|
|
}
|
|
}
|
|
|
|
//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() );
|
|
|
|
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.mFilterAttributeColumn.isNull() )
|
|
editTypeElement.setAttribute( "filterAttributeColumn", data.mFilterAttributeColumn );
|
|
if ( !data.mFilterAttributeValue.isNull() )
|
|
editTypeElement.setAttribute( "filterAttributeValue", data.mFilterAttributeValue );
|
|
}
|
|
break;
|
|
|
|
case LineEdit:
|
|
case UniqueValues:
|
|
case UniqueValuesEditable:
|
|
case Classification:
|
|
case FileName:
|
|
case Hidden:
|
|
case TextEdit:
|
|
case Calendar:
|
|
case Enumeration:
|
|
case Immutable:
|
|
case UuidGenerator:
|
|
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 afField = doc.createElement( "annotationform" );
|
|
QDomText afText = doc.createTextNode( QgsProject::instance()->writePath( mAnnotationForm ) );
|
|
afField.appendChild( afText );
|
|
node.appendChild( afField );
|
|
|
|
//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 );
|
|
|
|
//save vector overlays (e.g. diagrams)
|
|
QList<QgsVectorOverlay*>::const_iterator overlay_it = mOverlays.constBegin();
|
|
for ( ; overlay_it != mOverlays.constEnd(); ++overlay_it )
|
|
{
|
|
if ( *overlay_it )
|
|
{
|
|
( *overlay_it )->writeXML( mapLayerNode, 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() )
|
|
{
|
|
setUsingRendererV2( true );
|
|
|
|
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() )
|
|
{
|
|
if ( mUsingRendererV2 )
|
|
{
|
|
node.appendChild( mRendererV2->writeSld( doc, *this ) );
|
|
}
|
|
else
|
|
{
|
|
node.appendChild( doc.createComment( "Old Renderer not supported yet" ) );
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
bool QgsVectorLayer::changeGeometry( QgsFeatureId fid, QgsGeometry* geom )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
return mEditBuffer->changeGeometry( fid, geom );
|
|
}
|
|
|
|
|
|
bool QgsVectorLayer::changeAttributeValue( QgsFeatureId fid, int field, QVariant value, bool emitSignal )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return false;
|
|
|
|
// TODO[MD]: emitSignal
|
|
return mEditBuffer->changeAttributeValue( fid, field, value );
|
|
}
|
|
|
|
bool QgsVectorLayer::addAttribute( const QgsField &field )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return false;
|
|
|
|
return mEditBuffer->addAttribute( field );
|
|
}
|
|
|
|
bool QgsVectorLayer::addAttribute( QString name, QString type )
|
|
{
|
|
const QList< QgsVectorDataProvider::NativeType > &types = mDataProvider->nativeTypes();
|
|
|
|
int i;
|
|
for ( i = 0; i < types.size() && types[i].mTypeName != type; i++ )
|
|
;
|
|
|
|
return i < types.size() && addAttribute( QgsField( name, types[i].mType, type ) );
|
|
}
|
|
|
|
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::deleteFeature( QgsFeatureId fid )
|
|
{
|
|
if ( !mEditBuffer )
|
|
return false;
|
|
|
|
bool res = mEditBuffer->deleteFeature(fid);
|
|
if (res)
|
|
mSelectedFeatureIds.remove( fid ); // remove it from selection
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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 " ) ) );
|
|
}
|
|
|
|
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()
|
|
{
|
|
if ( !mEditBuffer )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
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();
|
|
|
|
delete mEditBuffer;
|
|
mEditBuffer = 0;
|
|
emit editingStopped();
|
|
|
|
// 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 )
|
|
{
|
|
// TODO: check whether features with these ID exist
|
|
mSelectedFeatureIds = ids;
|
|
|
|
// invalidate cache
|
|
setCacheImage( 0 );
|
|
|
|
emit selectionChanged();
|
|
}
|
|
|
|
int QgsVectorLayer::selectedFeatureCount()
|
|
{
|
|
return mSelectedFeatureIds.size();
|
|
}
|
|
|
|
const QgsFeatureIds& QgsVectorLayer::selectedFeaturesIds() const
|
|
{
|
|
return mSelectedFeatureIds;
|
|
}
|
|
|
|
|
|
QgsFeatureList QgsVectorLayer::selectedFeatures()
|
|
{
|
|
QgsFeatureList features;
|
|
|
|
foreach ( QgsFeatureId fid, mSelectedFeatureIds )
|
|
{
|
|
features.push_back( QgsFeature() );
|
|
featureAtId( fid, features.back(), geometryType() != QGis::NoGeometry, true );
|
|
}
|
|
|
|
return features;
|
|
}
|
|
|
|
bool QgsVectorLayer::addFeatures( QgsFeatureList features, bool makeSelected )
|
|
{
|
|
if ( !mEditBuffer || !mDataProvider )
|
|
return false;
|
|
|
|
bool res = mEditBuffer->addFeatures( features );
|
|
|
|
if ( makeSelected )
|
|
{
|
|
mSelectedFeatureIds.clear();
|
|
for ( QgsFeatureList::iterator iter = features.begin(); iter != features.end(); ++iter )
|
|
mSelectedFeatureIds.insert( iter->id() );
|
|
|
|
// invalidate cache
|
|
setCacheImage( 0 );
|
|
|
|
emit selectionChanged();
|
|
}
|
|
|
|
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
|
|
|
|
select( QgsAttributeList(), searchRect, true, true );
|
|
|
|
while ( 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::drawFeature( QgsRenderContext &renderContext,
|
|
QgsFeature& fet,
|
|
QImage * marker )
|
|
{
|
|
QPainter *p = renderContext.painter();
|
|
// Only have variables, etc outside the switch() statement that are
|
|
// used in all cases of the statement (otherwise they may get
|
|
// executed, but never used, in a bit of code where performance is
|
|
// critical).
|
|
if ( ! fet.isValid() )
|
|
{
|
|
return;
|
|
}
|
|
|
|
QgsGeometry* geom = fet.geometry();
|
|
if ( !geom )
|
|
{
|
|
return;
|
|
}
|
|
unsigned char* feature = geom->asWkb();
|
|
|
|
QGis::WkbType wkbType = geom->wkbType();
|
|
|
|
switch ( wkbType )
|
|
{
|
|
case QGis::WKBPoint:
|
|
case QGis::WKBPoint25D:
|
|
{
|
|
double x = *(( double * )( feature + 5 ) );
|
|
double y = *(( double * )( feature + 5 + sizeof( double ) ) );
|
|
|
|
transformPoint( x, y, &renderContext.mapToPixel(), renderContext.coordinateTransform() );
|
|
if ( qAbs( x ) > QgsClipper::MAX_X ||
|
|
qAbs( y ) > QgsClipper::MAX_Y )
|
|
{
|
|
break;
|
|
}
|
|
|
|
//QPointF pt(x - (marker->width()/2), y - (marker->height()/2));
|
|
QPointF pt( x * renderContext.rasterScaleFactor() - ( marker->width() / 2 ),
|
|
y * renderContext.rasterScaleFactor() - ( marker->height() / 2 ) );
|
|
|
|
p->save();
|
|
//p->scale(markerScaleFactor,markerScaleFactor);
|
|
p->scale( 1.0 / renderContext.rasterScaleFactor(), 1.0 / renderContext.rasterScaleFactor() );
|
|
p->drawImage( pt, *marker );
|
|
p->restore();
|
|
|
|
break;
|
|
}
|
|
case QGis::WKBMultiPoint:
|
|
case QGis::WKBMultiPoint25D:
|
|
{
|
|
unsigned char *ptr = feature + 5;
|
|
unsigned int nPoints = *(( int* )ptr );
|
|
ptr += 4;
|
|
|
|
p->save();
|
|
//p->scale(markerScaleFactor, markerScaleFactor);
|
|
p->scale( 1.0 / renderContext.rasterScaleFactor(), 1.0 / renderContext.rasterScaleFactor() );
|
|
|
|
for ( register unsigned int i = 0; i < nPoints; ++i )
|
|
{
|
|
ptr += 5;
|
|
double x = *(( double * ) ptr );
|
|
ptr += sizeof( double );
|
|
double y = *(( double * ) ptr );
|
|
ptr += sizeof( double );
|
|
|
|
if ( wkbType == QGis::WKBMultiPoint25D ) // ignore Z value
|
|
ptr += sizeof( double );
|
|
|
|
transformPoint( x, y, &renderContext.mapToPixel(), renderContext.coordinateTransform() );
|
|
//QPointF pt(x - (marker->width()/2), y - (marker->height()/2));
|
|
//QPointF pt(x/markerScaleFactor - (marker->width()/2), y/markerScaleFactor - (marker->height()/2));
|
|
QPointF pt( x * renderContext.rasterScaleFactor() - ( marker->width() / 2 ),
|
|
y * renderContext.rasterScaleFactor() - ( marker->height() / 2 ) );
|
|
//QPointF pt( x, y );
|
|
|
|
// Work around a +/- 32768 limitation on coordinates
|
|
if ( qAbs( x ) <= QgsClipper::MAX_X &&
|
|
qAbs( y ) <= QgsClipper::MAX_Y )
|
|
p->drawImage( pt, *marker );
|
|
}
|
|
p->restore();
|
|
|
|
break;
|
|
}
|
|
case QGis::WKBLineString:
|
|
case QGis::WKBLineString25D:
|
|
{
|
|
drawLineString( feature, renderContext );
|
|
break;
|
|
}
|
|
case QGis::WKBMultiLineString:
|
|
case QGis::WKBMultiLineString25D:
|
|
{
|
|
unsigned char* ptr = feature + 5;
|
|
unsigned int numLineStrings = *(( int* )ptr );
|
|
ptr = feature + 9;
|
|
|
|
for ( register unsigned int jdx = 0; jdx < numLineStrings; jdx++ )
|
|
{
|
|
ptr = drawLineString( ptr, renderContext );
|
|
}
|
|
break;
|
|
}
|
|
case QGis::WKBPolygon:
|
|
case QGis::WKBPolygon25D:
|
|
{
|
|
drawPolygon( feature, renderContext );
|
|
break;
|
|
}
|
|
case QGis::WKBMultiPolygon:
|
|
case QGis::WKBMultiPolygon25D:
|
|
{
|
|
unsigned char *ptr = feature + 5;
|
|
unsigned int numPolygons = *(( int* )ptr );
|
|
ptr = feature + 9;
|
|
for ( register unsigned int kdx = 0; kdx < numPolygons; kdx++ )
|
|
ptr = drawPolygon( ptr, renderContext );
|
|
break;
|
|
}
|
|
default:
|
|
QgsDebugMsg( "Unknown WkbType ENCOUNTERED" );
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
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 ) );
|
|
}
|
|
}
|
|
|
|
// Convenience function to transform the given point
|
|
inline void QgsVectorLayer::transformPoint(
|
|
double& x, double& y,
|
|
const QgsMapToPixel* mtp,
|
|
const QgsCoordinateTransform* ct )
|
|
{
|
|
// transform the point
|
|
if ( ct )
|
|
{
|
|
double z = 0;
|
|
ct->transformInPlace( x, y, z );
|
|
}
|
|
|
|
// transform from projected coordinate system to pixel
|
|
// position on map canvas
|
|
mtp->transformInPlace( x, y );
|
|
}
|
|
|
|
inline void QgsVectorLayer::transformPoints(
|
|
QVector<double>& x, QVector<double>& y, QVector<double>& z,
|
|
QgsRenderContext &renderContext )
|
|
{
|
|
// transform the point
|
|
if ( renderContext.coordinateTransform() )
|
|
renderContext.coordinateTransform()->transformInPlace( x, y, z );
|
|
|
|
// transform from projected coordinate system to pixel
|
|
// position on map canvas
|
|
renderContext.mapToPixel().transformInPlace( x, y );
|
|
}
|
|
|
|
|
|
const QString QgsVectorLayer::displayField() const
|
|
{
|
|
return mDisplayField;
|
|
}
|
|
|
|
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];
|
|
}
|
|
|
|
void QgsVectorLayer::addOverlay( QgsVectorOverlay* overlay )
|
|
{
|
|
mOverlays.push_back( overlay );
|
|
}
|
|
|
|
void QgsVectorLayer::removeOverlay( const QString& typeName )
|
|
{
|
|
for ( int i = mOverlays.size() - 1; i >= 0; --i )
|
|
{
|
|
if ( mOverlays.at( i )->typeName() == typeName )
|
|
{
|
|
mOverlays.removeAt( i );
|
|
}
|
|
}
|
|
}
|
|
|
|
void QgsVectorLayer::vectorOverlays( QList<QgsVectorOverlay*>& overlayList )
|
|
{
|
|
overlayList = mOverlays;
|
|
}
|
|
|
|
QgsVectorOverlay* QgsVectorLayer::findOverlayByType( const QString& typeName )
|
|
{
|
|
QList<QgsVectorOverlay*>::iterator it = mOverlays.begin();
|
|
for ( ; it != mOverlays.end(); ++it )
|
|
{
|
|
if (( *it )->typeName() == typeName )
|
|
{
|
|
return *it;
|
|
}
|
|
}
|
|
return 0; //not found
|
|
}
|
|
|
|
|
|
QgsFeatureRendererV2* QgsVectorLayer::rendererV2()
|
|
{
|
|
return mRendererV2;
|
|
}
|
|
|
|
void QgsVectorLayer::setRendererV2( QgsFeatureRendererV2 *r )
|
|
{
|
|
if ( !hasGeometryType() )
|
|
return;
|
|
|
|
if ( r != mRendererV2 )
|
|
{
|
|
if ( r )
|
|
setUsingRendererV2( true );
|
|
delete mRendererV2;
|
|
mRendererV2 = r;
|
|
mSymbolFeatureCounted = false;
|
|
mSymbolFeatureCountMap.clear();
|
|
}
|
|
}
|
|
bool QgsVectorLayer::isUsingRendererV2()
|
|
{
|
|
return mUsingRendererV2;
|
|
}
|
|
void QgsVectorLayer::setUsingRendererV2( bool usingRendererV2 )
|
|
{
|
|
if ( !hasGeometryType() )
|
|
return;
|
|
|
|
mUsingRendererV2 = usingRendererV2;
|
|
}
|
|
|
|
|
|
|
|
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->containsJoins() )
|
|
mJoinBuffer->updateFields( mUpdatedFields );
|
|
}
|
|
|
|
|
|
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;
|
|
|
|
select( attList, QgsRectangle(), false, false );
|
|
|
|
QgsFeature f;
|
|
QVariant currentValue;
|
|
QHash<QString, QVariant> val;
|
|
while ( 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;
|
|
|
|
select( attList, QgsRectangle(), false, false );
|
|
|
|
QgsFeature f;
|
|
double minimumValue = std::numeric_limits<double>::max();
|
|
double currentValue = 0;
|
|
while ( 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( index );
|
|
}
|
|
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;
|
|
|
|
select( attList, QgsRectangle(), false, false );
|
|
|
|
QgsFeature f;
|
|
double maximumValue = -std::numeric_limits<double>::max();
|
|
double currentValue = 0;
|
|
while ( 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();
|
|
}
|
|
|
|
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 )
|
|
{
|
|
// see if feature count limit is set for labeling
|
|
QgsPalLayerSettings& palyr = rendererContext.labelingEngine()->layer( this->id() );
|
|
if ( palyr.limitNumLabels && palyr.maxNumLabels > 0 )
|
|
{
|
|
select( QgsAttributeList(), rendererContext.extent() );
|
|
// total number of features that may be labeled
|
|
QgsFeature ftr;
|
|
int nFeatsToLabel = 0;
|
|
while ( nextFeature( ftr ) ) { nFeatsToLabel += 1; }
|
|
palyr.mFeaturesToLabel = nFeatsToLabel;
|
|
}
|
|
}
|
|
|
|
//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 += "<table width=\"100%\">";
|
|
|
|
//-------------
|
|
|
|
myMetadata += "<tr class=\"glossy\"><td>";
|
|
myMetadata += tr( "General:" );
|
|
myMetadata += "</td></tr>";
|
|
|
|
// data comment
|
|
if ( !( dataComment().isEmpty() ) )
|
|
{
|
|
myMetadata += "<tr><td>";
|
|
myMetadata += tr( "Layer comment: %1" ).arg( dataComment() );
|
|
myMetadata += "</td></tr>";
|
|
}
|
|
|
|
//storage type
|
|
myMetadata += "<tr><td>";
|
|
myMetadata += tr( "Storage type of this layer: %1" ).arg( storageType() );
|
|
myMetadata += "</td></tr>";
|
|
|
|
// data source
|
|
myMetadata += "<tr><td>";
|
|
myMetadata += tr( "Source for this layer: %1" ).arg( publicSource() );
|
|
myMetadata += "</td></tr>";
|
|
|
|
//geom type
|
|
|
|
QGis::GeometryType type = geometryType();
|
|
|
|
if ( type < 0 || type > QGis::NoGeometry )
|
|
{
|
|
QgsDebugMsg( "Invalid vector type" );
|
|
}
|
|
else
|
|
{
|
|
QString typeString( QGis::qgisVectorGeometryType[geometryType()] );
|
|
|
|
myMetadata += "<tr><td>";
|
|
myMetadata += tr( "Geometry type of the features in this layer: %1" ).arg( typeString );
|
|
myMetadata += "</td></tr>";
|
|
}
|
|
|
|
|
|
//feature count
|
|
myMetadata += "<tr><td>";
|
|
myMetadata += tr( "The number of features in this layer: %1" ).arg( featureCount() );
|
|
myMetadata += "</td></tr>";
|
|
//capabilities
|
|
myMetadata += "<tr><td>";
|
|
myMetadata += tr( "Editing capabilities of this layer: %1" ).arg( capabilitiesString() );
|
|
myMetadata += "</td></tr>";
|
|
|
|
//-------------
|
|
|
|
QgsRectangle myExtent = extent();
|
|
myMetadata += "<tr class=\"glossy\"><td>";
|
|
myMetadata += tr( "Extents:" );
|
|
myMetadata += "</td></tr>";
|
|
//extents in layer cs TODO...maybe make a little nested table to improve layout...
|
|
myMetadata += "<tr><td>" + tr( "In layer spatial reference system units : " );
|
|
|
|
// 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 += "</td></tr>";
|
|
|
|
//extents in project cs
|
|
|
|
try
|
|
{
|
|
#if 0
|
|
// TODO: currently disabled, will revisit later [MD]
|
|
QgsRectangle myProjectedExtent = coordinateTransform->transformBoundingBox( extent() );
|
|
myMetadata += "<tr><td>";
|
|
myMetadata += tr( "In project spatial reference system units : " )
|
|
+ tr( "xMin,yMin %1,%2 : xMax,yMax %3,%4" )
|
|
.arg( myProjectedExtent.xMinimum() )
|
|
.arg( myProjectedExtent.yMinimum() )
|
|
.arg( myProjectedExtent.xMaximum() )
|
|
.arg( myProjectedExtent.yMaximum() );
|
|
myMetadata += "</td></tr>";
|
|
#endif
|
|
|
|
//
|
|
// Display layer spatial ref system
|
|
//
|
|
myMetadata += "<tr class=\"glossy\"><td>";
|
|
myMetadata += tr( "Layer Spatial Reference System:" );
|
|
myMetadata += "</td></tr>";
|
|
myMetadata += "<tr><td>";
|
|
myMetadata += crs().toProj4().replace( QRegExp( "\"" ), " \"" );
|
|
myMetadata += "</td></tr>";
|
|
|
|
//
|
|
// Display project (output) spatial ref system
|
|
//
|
|
#if 0
|
|
// TODO: disabled for now, will revisit later [MD]
|
|
myMetadata += "<tr><td bgcolor=\"gray\">";
|
|
myMetadata += tr( "Project (Output) Spatial Reference System:" );
|
|
myMetadata += "</td></tr>";
|
|
myMetadata += "<tr><td>";
|
|
myMetadata += coordinateTransform->destCRS().toProj4().replace( QRegExp( "\"" ), " \"" );
|
|
myMetadata += "</td></tr>";
|
|
#endif
|
|
}
|
|
catch ( QgsCsException &cse )
|
|
{
|
|
Q_UNUSED( cse );
|
|
QgsDebugMsg( cse.what() );
|
|
|
|
myMetadata += "<tr><td>";
|
|
myMetadata += tr( "In project spatial reference system units : " )
|
|
+ tr( "(Invalid transformation of layer extents)" );
|
|
myMetadata += "</td></tr>";
|
|
|
|
}
|
|
|
|
#if 0
|
|
//
|
|
// Add the info about each field in the attribute table
|
|
//
|
|
myMetadata += "<tr class=\"glossy\"><td>";
|
|
myMetadata += tr( "Attribute field info:" );
|
|
myMetadata += "</td></tr>";
|
|
myMetadata += "<tr><td>";
|
|
|
|
// 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 += "</td></tr>"; //end of stats container table row
|
|
//
|
|
// Close the table
|
|
//
|
|
|
|
myMetadata += "</table>";
|
|
|
|
myMetadata += "</body></html>";
|
|
return myMetadata;
|
|
}
|
|
|
|
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;
|
|
}
|