sort QgsRasterRendererRegistry entity names in a logical order, for use in raster properties dialog

Author: etiennesky

src/app/qgsrasterlayerproperties.cpp

@@ -274,11 +274,13 @@ QgsRasterLayerProperties::QgsRasterLayerProperties( QgsMapLayer* lyr, QgsMapCanv
   QgsRasterRendererRegistry::instance()->insertWidgetFunction( "singlebandgray", QgsSingleBandGrayRendererWidget::create );
 
   //fill available renderers into combo box
-  QList< QgsRasterRendererRegistryEntry > rendererEntries = QgsRasterRendererRegistry::instance()->entries();
-  QList< QgsRasterRendererRegistryEntry >::const_iterator rendererIt = rendererEntries.constBegin();
-  for ( ; rendererIt != rendererEntries.constEnd(); ++rendererIt )
+  QgsRasterRendererRegistryEntry entry;
+  foreach( QString name, QgsRasterRendererRegistry::instance()->renderersList() )
   {
-    mRenderTypeComboBox->addItem( rendererIt->visibleName, rendererIt->name );
+    if ( QgsRasterRendererRegistry::instance()->rendererData( name, entry ) )
+    {
+      mRenderTypeComboBox->addItem( entry.visibleName, entry.name );
+    }
   }
 
   if ( renderer )

src/core/raster/qgsrasterrendererregistry.cpp

@@ -48,13 +48,14 @@ QgsRasterRendererRegistry* QgsRasterRendererRegistry::instance()
 
 QgsRasterRendererRegistry::QgsRasterRendererRegistry()
 {
-  insert( QgsRasterRendererRegistryEntry( "paletted", QObject::tr( "Paletted" ), QgsPalettedRasterRenderer::create, 0 ) );
+  // insert items in a particular order, which is returned in renderersList()
   insert( QgsRasterRendererRegistryEntry( "multibandcolor", QObject::tr( "Multiband color" ),
                                           QgsMultiBandColorRenderer::create, 0 ) );
-  insert( QgsRasterRendererRegistryEntry( "singlebandpseudocolor", QObject::tr( "Singleband pseudocolor" ),
-                                          QgsSingleBandPseudoColorRenderer::create, 0 ) );
+  insert( QgsRasterRendererRegistryEntry( "paletted", QObject::tr( "Paletted" ), QgsPalettedRasterRenderer::create, 0 ) );
   insert( QgsRasterRendererRegistryEntry( "singlebandgray", QObject::tr( "Singleband gray" ),
                                           QgsSingleBandGrayRenderer::create, 0 ) );
+  insert( QgsRasterRendererRegistryEntry( "singlebandpseudocolor", QObject::tr( "Singleband pseudocolor" ),
+                                          QgsSingleBandPseudoColorRenderer::create, 0 ) );
   insert( QgsRasterRendererRegistryEntry( "singlebandcolordata", QObject::tr( "Singleband color data" ),
                                           QgsSingleBandColorDataRenderer::create, 0 ) );
 }
@@ -66,6 +67,7 @@ QgsRasterRendererRegistry::~QgsRasterRendererRegistry()
 void QgsRasterRendererRegistry::insert( QgsRasterRendererRegistryEntry entry )
 {
   mEntries.insert( entry.name, entry );
+  mSortedEntries.append( entry.name );
 }
 
 void QgsRasterRendererRegistry::insertWidgetFunction( const QString& rendererName, QgsRasterRendererWidgetCreateFunc func )
@@ -90,7 +92,8 @@ bool QgsRasterRendererRegistry::rendererData( const QString& rendererName, QgsRa
 
 QStringList QgsRasterRendererRegistry::renderersList() const
 {
-  return QStringList( mEntries.keys() );
+  // return QStringList( mEntries.keys() );
+  return mSortedEntries;
 }
 
 QList< QgsRasterRendererRegistryEntry > QgsRasterRendererRegistry::entries() const

src/core/raster/qgsrasterrendererregistry.h

@@ -64,6 +64,7 @@ class CORE_EXPORT QgsRasterRendererRegistry
   private:
     static QgsRasterRendererRegistry* mInstance;
     QHash< QString, QgsRasterRendererRegistryEntry > mEntries;
+    QStringList mSortedEntries;
 
     //read min/max values from
     bool minMaxValuesForBand( int band, QgsRasterDataProvider* provider, double& minValue, double& maxValue ) const;