void QgsClassificationWidgetWrapper::initWidget( QWidget *editor )
{
mComboBox = qobject_cast<QComboBox *>( editor );
if ( mComboBox )
{
const QgsCategorizedSymbolRenderer *csr = dynamic_cast<const QgsCategorizedSymbolRenderer *>( layer()->renderer() );
if ( csr )
{
const QgsCategoryList categories = csr->categories();
for ( int i = 0; i < categories.size(); i++ )
{
QString label = categories[i].label();
QString value = categories[i].value().toString();
if ( label.isEmpty() )
label = value;
mComboBox->addItem( label, value );
}
}
connect( mComboBox, static_cast<void ( QComboBox::* )( int )>( &QComboBox::currentIndexChanged ),
this, static_cast<void ( QgsEditorWidgetWrapper::* )()>( &QgsEditorWidgetWrapper::emitValueChanged ) );
}
}
void QgsClassificationWidget::initWidget( QWidget* editor )
{
mComboBox = qobject_cast<QComboBox*>( editor );
if ( mComboBox )
{
const QgsCategorizedSymbolRendererV2 *csr = dynamic_cast<const QgsCategorizedSymbolRendererV2 *>( layer()->rendererV2() );
if ( csr )
{
const QgsCategoryList categories = csr->categories();
for ( int i = 0; i < categories.size(); i++ )
{
QString label = categories[i].label();
QString value = categories[i].value().toString();
if ( label.isEmpty() )
label = value;
mComboBox->addItem( label, value );
}
}
connect( mComboBox, SIGNAL( currentIndexChanged( int ) ), this, SLOT( valueChanged() ) );
}
}
void QgsCategorizedSymbolRendererV2Widget::addCategories()
{
QString attrName = cboCategorizedColumn->currentText();
int idx = mLayer->fieldNameIndex( attrName );
QList<QVariant> unique_vals;
mLayer->uniqueValues( idx, unique_vals );
//DlgAddCategories dlg(mStyle, createDefaultSymbol(), unique_vals, this);
//if (!dlg.exec())
// return;
QgsVectorColorRampV2* ramp = cboCategorizedColorRamp->currentColorRamp();
if ( ramp == NULL )
{
if ( cboCategorizedColorRamp->count() == 0 )
QMessageBox::critical( this, tr( "Error" ), tr( "There are no available color ramps. You can add them in Style Manager." ) );
else
QMessageBox::critical( this, tr( "Error" ), tr( "The selected color ramp is not available." ) );
return;
}
QgsCategoryList cats;
_createCategories( cats, unique_vals, mCategorizedSymbol, ramp );
bool deleteExisting = false;
if ( !mOldClassificationAttribute.isEmpty() &&
attrName != mOldClassificationAttribute &&
mRenderer->categories().count() > 0 )
{
int res = QMessageBox::question( this,
tr( "Confirm Delete" ),
tr( "The classification field was changed from '%1' to '%2'.\n"
"Should the existing classes be deleted before classification?" )
.arg( mOldClassificationAttribute ).arg( attrName ),
QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel );
if ( res == QMessageBox::Cancel )
{
return;
}
deleteExisting = ( res == QMessageBox::Yes );
}
if ( !deleteExisting )
{
QgsCategoryList prevCats = mRenderer->categories();
for ( int i = 0; i < cats.size(); ++i )
{
bool contains = false;
QVariant value = cats.at( i ).value();
for ( int j = 0; j < prevCats.size() && !contains; ++j )
{
if ( prevCats.at( j ).value() == value )
{
contains = true;
break;
}
}
if ( !contains )
prevCats.append( cats.at( i ) );
}
cats = prevCats;
}
mOldClassificationAttribute = attrName;
// TODO: if not all categories are desired, delete some!
/*
if (not dlg.readAllCats.isChecked())
{
cats2 = {}
for item in dlg.listCategories.selectedItems():
for k,c in cats.iteritems():
if item.text() == k.toString():
break
cats2[k] = c
cats = cats2
}
*/
// recreate renderer
delete mRenderer;
mRenderer = new QgsCategorizedSymbolRendererV2( attrName, cats );
mRenderer->setSourceSymbol( mCategorizedSymbol->clone() );
mRenderer->setSourceColorRamp( ramp->clone() );
populateCategories();
}