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qgsgraduatedsymbolrendererv2widget.cpp
1104 lines (942 loc) · 34.4 KB
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qgsgraduatedsymbolrendererv2widget.cpp
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/***************************************************************************
qgsgraduatedsymbolrendererv2widget.cpp
---------------------
begin : November 2009
copyright : (C) 2009 by Martin Dobias
email : wonder dot sk at gmail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgsgraduatedsymbolrendererv2widget.h"
#include "qgssymbolv2.h"
#include "qgssymbollayerv2utils.h"
#include "qgsvectorcolorrampv2.h"
#include "qgsstylev2.h"
#include "qgsvectorlayer.h"
#include "qgssymbolv2selectordialog.h"
#include "qgsexpressionbuilderdialog.h"
#include "qgsludialog.h"
#include "qgsproject.h"
#include <QKeyEvent>
#include <QMenu>
#include <QMessageBox>
#include <QStandardItemModel>
#include <QStandardItem>
#include <QPen>
#include <QPainter>
// ------------------------------ Model ------------------------------------
QgsGraduatedSymbolRendererV2Model::QgsGraduatedSymbolRendererV2Model( QObject * parent ) : QAbstractItemModel( parent )
, mRenderer( 0 )
, mMimeFormat( "application/x-qgsgraduatedsymbolrendererv2model" )
{
}
void QgsGraduatedSymbolRendererV2Model::setRenderer( QgsGraduatedSymbolRendererV2* renderer )
{
if ( mRenderer )
{
beginRemoveRows( QModelIndex(), 0, mRenderer->ranges().size() - 1 );
mRenderer = 0;
endRemoveRows();
}
if ( renderer )
{
beginInsertRows( QModelIndex(), 0, renderer->ranges().size() - 1 );
mRenderer = renderer;
endInsertRows();
}
}
void QgsGraduatedSymbolRendererV2Model::addClass( QgsSymbolV2* symbol )
{
if ( !mRenderer ) return;
int idx = mRenderer->ranges().size();
beginInsertRows( QModelIndex(), idx, idx );
mRenderer->addClass( symbol );
endInsertRows();
}
void QgsGraduatedSymbolRendererV2Model::addClass( QgsRendererRangeV2 range )
{
if ( !mRenderer )
{
return;
}
int idx = mRenderer->ranges().size();
beginInsertRows( QModelIndex(), idx, idx );
mRenderer->addClass( range );
endInsertRows();
}
QgsRendererRangeV2 QgsGraduatedSymbolRendererV2Model::rendererRange( const QModelIndex &index )
{
if ( !index.isValid() || !mRenderer || mRenderer->ranges().size() <= index.row() )
{
return QgsRendererRangeV2();
}
return mRenderer->ranges().value( index.row() );
}
Qt::ItemFlags QgsGraduatedSymbolRendererV2Model::flags( const QModelIndex & index ) const
{
if ( !index.isValid() )
{
return Qt::ItemIsDropEnabled;
}
Qt::ItemFlags flags = Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled | Qt::ItemIsUserCheckable;
if ( index.column() == 2 )
{
flags |= Qt::ItemIsEditable;
}
return flags;
}
Qt::DropActions QgsGraduatedSymbolRendererV2Model::supportedDropActions() const
{
return Qt::MoveAction;
}
QVariant QgsGraduatedSymbolRendererV2Model::data( const QModelIndex &index, int role ) const
{
if ( !index.isValid() || !mRenderer ) return QVariant();
const QgsRendererRangeV2 range = mRenderer->ranges().value( index.row() );
if ( role == Qt::CheckStateRole && index.column() == 0 )
{
return range.renderState() ? Qt::Checked : Qt::Unchecked;
}
else if ( role == Qt::DisplayRole || role == Qt::ToolTipRole )
{
switch ( index.column() )
{
case 1:
{
int decimalPlaces = mRenderer->labelFormat().precision() + 2;
if ( decimalPlaces < 0 ) decimalPlaces = 0;
return QString::number( range.lowerValue(), 'f', decimalPlaces ) + " - " + QString::number( range.upperValue(), 'f', decimalPlaces );
}
case 2: return range.label();
default: return QVariant();
}
}
else if ( role == Qt::DecorationRole && index.column() == 0 && range.symbol() )
{
return QgsSymbolLayerV2Utils::symbolPreviewIcon( range.symbol(), QSize( 16, 16 ) );
}
else if ( role == Qt::TextAlignmentRole )
{
return ( index.column() == 0 ) ? Qt::AlignHCenter : Qt::AlignLeft;
}
else if ( role == Qt::EditRole )
{
switch ( index.column() )
{
// case 1: return rangeStr;
case 2: return range.label();
default: return QVariant();
}
}
return QVariant();
}
bool QgsGraduatedSymbolRendererV2Model::setData( const QModelIndex & index, const QVariant & value, int role )
{
if ( !index.isValid() )
return false;
if ( index.column() == 0 && role == Qt::CheckStateRole )
{
mRenderer->updateRangeRenderState( index.row(), value == Qt::Checked );
emit dataChanged( index, index );
return true;
}
if ( role != Qt::EditRole )
return false;
switch ( index.column() )
{
case 1: // range
return false; // range is edited in popup dialog
break;
case 2: // label
mRenderer->updateRangeLabel( index.row(), value.toString() );
break;
default:
return false;
}
emit dataChanged( index, index );
return true;
}
QVariant QgsGraduatedSymbolRendererV2Model::headerData( int section, Qt::Orientation orientation, int role ) const
{
if ( orientation == Qt::Horizontal && role == Qt::DisplayRole && section >= 0 && section < 3 )
{
QStringList lst; lst << tr( "Symbol" ) << tr( "Values" ) << tr( "Legend" );
return lst.value( section );
}
return QVariant();
}
int QgsGraduatedSymbolRendererV2Model::rowCount( const QModelIndex &parent ) const
{
if ( parent.isValid() || !mRenderer )
{
return 0;
}
return mRenderer->ranges().size();
}
int QgsGraduatedSymbolRendererV2Model::columnCount( const QModelIndex & index ) const
{
Q_UNUSED( index );
return 3;
}
QModelIndex QgsGraduatedSymbolRendererV2Model::index( int row, int column, const QModelIndex &parent ) const
{
if ( hasIndex( row, column, parent ) )
{
return createIndex( row, column );
}
return QModelIndex();
}
QModelIndex QgsGraduatedSymbolRendererV2Model::parent( const QModelIndex &index ) const
{
Q_UNUSED( index );
return QModelIndex();
}
QStringList QgsGraduatedSymbolRendererV2Model::mimeTypes() const
{
QStringList types;
types << mMimeFormat;
return types;
}
QMimeData *QgsGraduatedSymbolRendererV2Model::mimeData( const QModelIndexList &indexes ) const
{
QMimeData *mimeData = new QMimeData();
QByteArray encodedData;
QDataStream stream( &encodedData, QIODevice::WriteOnly );
// Create list of rows
foreach ( const QModelIndex &index, indexes )
{
if ( !index.isValid() || index.column() != 0 )
continue;
stream << index.row();
}
mimeData->setData( mMimeFormat, encodedData );
return mimeData;
}
bool QgsGraduatedSymbolRendererV2Model::dropMimeData( const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent )
{
Q_UNUSED( row );
Q_UNUSED( column );
if ( action != Qt::MoveAction ) return true;
if ( !data->hasFormat( mMimeFormat ) ) return false;
QByteArray encodedData = data->data( mMimeFormat );
QDataStream stream( &encodedData, QIODevice::ReadOnly );
QVector<int> rows;
while ( !stream.atEnd() )
{
int r;
stream >> r;
rows.append( r );
}
int to = parent.row();
// to is -1 if dragged outside items, i.e. below any item,
// then move to the last position
if ( to == -1 ) to = mRenderer->ranges().size(); // out of rang ok, will be decreased
for ( int i = rows.size() - 1; i >= 0; i-- )
{
QgsDebugMsg( QString( "move %1 to %2" ).arg( rows[i] ).arg( to ) );
int t = to;
// moveCategory first removes and then inserts
if ( rows[i] < t ) t--;
mRenderer->moveClass( rows[i], t );
// current moved under another, shift its index up
for ( int j = 0; j < i; j++ )
{
if ( to < rows[j] && rows[i] > rows[j] ) rows[j] += 1;
}
// removed under 'to' so the target shifted down
if ( rows[i] < to ) to--;
}
emit dataChanged( createIndex( 0, 0 ), createIndex( mRenderer->ranges().size(), 0 ) );
emit rowsMoved();
return false;
}
void QgsGraduatedSymbolRendererV2Model::deleteRows( QList<int> rows )
{
for ( int i = rows.size() - 1; i >= 0; i-- )
{
beginRemoveRows( QModelIndex(), rows[i], rows[i] );
mRenderer->deleteClass( rows[i] );
endRemoveRows();
}
}
void QgsGraduatedSymbolRendererV2Model::removeAllRows()
{
beginRemoveRows( QModelIndex(), 0, mRenderer->ranges().size() - 1 );
mRenderer->deleteAllClasses();
endRemoveRows();
}
void QgsGraduatedSymbolRendererV2Model::sort( int column, Qt::SortOrder order )
{
QgsDebugMsg( "Entered" );
if ( column == 0 )
{
return;
}
if ( column == 1 )
{
mRenderer->sortByValue( order );
}
else if ( column == 2 )
{
mRenderer->sortByLabel( order );
}
emit rowsMoved();
emit dataChanged( createIndex( 0, 0 ), createIndex( mRenderer->ranges().size(), 0 ) );
QgsDebugMsg( "Done" );
}
void QgsGraduatedSymbolRendererV2Model::updateSymbology( bool resetModel )
{
if ( resetModel )
{
reset();
}
else
{
emit dataChanged( createIndex( 0, 0 ), createIndex( mRenderer->ranges().size(), 0 ) );
}
}
void QgsGraduatedSymbolRendererV2Model::updateLabels()
{
emit dataChanged( createIndex( 0, 2 ), createIndex( mRenderer->ranges().size(), 2 ) );
}
// ------------------------------ View style --------------------------------
QgsGraduatedSymbolRendererV2ViewStyle::QgsGraduatedSymbolRendererV2ViewStyle( QStyle* style )
: QProxyStyle( style )
{}
void QgsGraduatedSymbolRendererV2ViewStyle::drawPrimitive( PrimitiveElement element, const QStyleOption * option, QPainter * painter, const QWidget * widget ) const
{
if ( element == QStyle::PE_IndicatorItemViewItemDrop && !option->rect.isNull() )
{
QStyleOption opt( *option );
opt.rect.setLeft( 0 );
// draw always as line above, because we move item to that index
opt.rect.setHeight( 0 );
if ( widget ) opt.rect.setRight( widget->width() );
QProxyStyle::drawPrimitive( element, &opt, painter, widget );
return;
}
QProxyStyle::drawPrimitive( element, option, painter, widget );
}
// ------------------------------ Widget ------------------------------------
QgsRendererV2Widget* QgsGraduatedSymbolRendererV2Widget::create( QgsVectorLayer* layer, QgsStyleV2* style, QgsFeatureRendererV2* renderer )
{
return new QgsGraduatedSymbolRendererV2Widget( layer, style, renderer );
}
QgsGraduatedSymbolRendererV2Widget::QgsGraduatedSymbolRendererV2Widget( QgsVectorLayer* layer, QgsStyleV2* style, QgsFeatureRendererV2* renderer )
: QgsRendererV2Widget( layer, style )
, mRenderer( 0 )
, mModel( 0 )
{
// try to recognize the previous renderer
// (null renderer means "no previous renderer")
if ( renderer )
{
mRenderer = QgsGraduatedSymbolRendererV2::convertFromRenderer( renderer );
}
if ( !mRenderer )
{
mRenderer = new QgsGraduatedSymbolRendererV2( "", QgsRangeList() );
}
// setup user interface
setupUi( this );
mModel = new QgsGraduatedSymbolRendererV2Model( this );
mExpressionWidget->setFilters( QgsFieldProxyModel::Numeric | QgsFieldProxyModel::Date );
mExpressionWidget->setLayer( mLayer );
mSizeUnitWidget->setUnits( QgsSymbolV2::OutputUnitList() << QgsSymbolV2::MM << QgsSymbolV2::MapUnit );
cboGraduatedColorRamp->populate( mStyle );
spinPrecision->setMinimum( QgsRendererRangeV2LabelFormat::MinPrecision );
spinPrecision->setMaximum( QgsRendererRangeV2LabelFormat::MaxPrecision );
// set project default color ramp
QString defaultColorRamp = QgsProject::instance()->readEntry( "DefaultStyles", "/ColorRamp", "" );
if ( defaultColorRamp != "" )
{
int index = cboGraduatedColorRamp->findText( defaultColorRamp, Qt::MatchCaseSensitive );
if ( index >= 0 )
cboGraduatedColorRamp->setCurrentIndex( index );
}
viewGraduated->setStyle( new QgsGraduatedSymbolRendererV2ViewStyle( viewGraduated->style() ) );
mGraduatedSymbol = QgsSymbolV2::defaultSymbol( mLayer->geometryType() );
methodComboBox->blockSignals( true );
methodComboBox->addItem( "Color" );
if ( mGraduatedSymbol->type() == QgsSymbolV2::Marker )
{
methodComboBox->addItem( "Size" );
minSizeSpinBox->setValue( 1 );
maxSizeSpinBox->setValue( 8 );
}
else if ( mGraduatedSymbol->type() == QgsSymbolV2::Line )
{
methodComboBox->addItem( "Size" );
minSizeSpinBox->setValue( .1 );
maxSizeSpinBox->setValue( 2 );
}
methodComboBox->blockSignals( false );
connect( mExpressionWidget, SIGNAL( fieldChanged( QString ) ), this, SLOT( graduatedColumnChanged( QString ) ) );
connect( viewGraduated, SIGNAL( doubleClicked( const QModelIndex & ) ), this, SLOT( rangesDoubleClicked( const QModelIndex & ) ) );
connect( viewGraduated, SIGNAL( clicked( const QModelIndex & ) ), this, SLOT( rangesClicked( const QModelIndex & ) ) );
connect( viewGraduated, SIGNAL( customContextMenuRequested( const QPoint& ) ), this, SLOT( contextMenuViewCategories( const QPoint& ) ) );
connect( btnGraduatedClassify, SIGNAL( clicked() ), this, SLOT( classifyGraduated() ) );
connect( btnChangeGraduatedSymbol, SIGNAL( clicked() ), this, SLOT( changeGraduatedSymbol() ) );
connect( btnGraduatedDelete, SIGNAL( clicked() ), this, SLOT( deleteClasses() ) );
connect( btnDeleteAllClasses, SIGNAL( clicked() ), this, SLOT( deleteAllClasses() ) );
connect( btnGraduatedAdd, SIGNAL( clicked() ), this, SLOT( addClass() ) );
connect( cbxLinkBoundaries, SIGNAL( toggled( bool ) ), this, SLOT( toggleBoundariesLink( bool ) ) );
connect( mSizeUnitWidget, SIGNAL( changed() ), this, SLOT( on_mSizeUnitWidget_changed() ) );
connectUpdateHandlers();
// initialize from previously set renderer
updateUiFromRenderer();
// menus for data-defined rotation/size
QMenu* advMenu = new QMenu;
advMenu->addAction( tr( "Symbol levels..." ), this, SLOT( showSymbolLevels() ) );
mDataDefinedMenus = new QgsRendererV2DataDefinedMenus( advMenu, mLayer,
mRenderer->rotationField(), mRenderer->sizeScaleField(), mRenderer->scaleMethod() );
connect( mDataDefinedMenus, SIGNAL( rotationFieldChanged( QString ) ), this, SLOT( rotationFieldChanged( QString ) ) );
connect( mDataDefinedMenus, SIGNAL( sizeScaleFieldChanged( QString ) ), this, SLOT( sizeScaleFieldChanged( QString ) ) );
connect( mDataDefinedMenus, SIGNAL( scaleMethodChanged( QgsSymbolV2::ScaleMethod ) ), this, SLOT( scaleMethodChanged( QgsSymbolV2::ScaleMethod ) ) );
btnAdvanced->setMenu( advMenu );
mHistogramWidget->setLayer( mLayer );
mHistogramWidget->setRenderer( mRenderer );
connect( mHistogramWidget, SIGNAL( rangesModified( bool ) ), this, SLOT( refreshRanges( bool ) ) );
connect( mExpressionWidget, SIGNAL( fieldChanged( QString ) ), mHistogramWidget, SLOT( setSourceFieldExp( QString ) ) );
}
void QgsGraduatedSymbolRendererV2Widget::on_mSizeUnitWidget_changed()
{
if ( !mGraduatedSymbol ) return;
mGraduatedSymbol->setOutputUnit( mSizeUnitWidget->unit() );
mGraduatedSymbol->setMapUnitScale( mSizeUnitWidget->getMapUnitScale() );
updateGraduatedSymbolIcon();
mRenderer->updateSymbols( mGraduatedSymbol );
refreshSymbolView();
}
QgsGraduatedSymbolRendererV2Widget::~QgsGraduatedSymbolRendererV2Widget()
{
delete mRenderer;
delete mModel;
}
QgsFeatureRendererV2* QgsGraduatedSymbolRendererV2Widget::renderer()
{
return mRenderer;
}
// Connect/disconnect event handlers which trigger updating renderer
void QgsGraduatedSymbolRendererV2Widget::connectUpdateHandlers()
{
connect( spinGraduatedClasses, SIGNAL( valueChanged( int ) ), this, SLOT( classifyGraduated() ) );
connect( cboGraduatedMode, SIGNAL( currentIndexChanged( int ) ), this, SLOT( classifyGraduated() ) );
connect( cboGraduatedColorRamp, SIGNAL( currentIndexChanged( int ) ), this, SLOT( reapplyColorRamp() ) );
connect( cbxInvertedColorRamp, SIGNAL( toggled( bool ) ), this, SLOT( reapplyColorRamp() ) );
connect( spinPrecision, SIGNAL( valueChanged( int ) ), this, SLOT( labelFormatChanged() ) );
connect( cbxTrimTrailingZeroes, SIGNAL( toggled( bool ) ), this, SLOT( labelFormatChanged() ) );
connect( txtLegendFormat, SIGNAL( textChanged( QString ) ), this, SLOT( labelFormatChanged() ) );
connect( minSizeSpinBox, SIGNAL( valueChanged( double ) ), this, SLOT( reapplySizes() ) );
connect( maxSizeSpinBox, SIGNAL( valueChanged( double ) ), this, SLOT( reapplySizes() ) );
connect( mModel, SIGNAL( rowsMoved() ), this, SLOT( rowsMoved() ) );
connect( mModel, SIGNAL( dataChanged( QModelIndex, QModelIndex ) ), this, SLOT( modelDataChanged() ) );
}
// Connect/disconnect event handlers which trigger updating renderer
void QgsGraduatedSymbolRendererV2Widget::disconnectUpdateHandlers()
{
disconnect( spinGraduatedClasses, SIGNAL( valueChanged( int ) ), this, SLOT( classifyGraduated() ) );
disconnect( cboGraduatedMode, SIGNAL( currentIndexChanged( int ) ), this, SLOT( classifyGraduated() ) );
disconnect( cboGraduatedColorRamp, SIGNAL( currentIndexChanged( int ) ), this, SLOT( reapplyColorRamp() ) );
disconnect( cbxInvertedColorRamp, SIGNAL( toggled( bool ) ), this, SLOT( reapplyColorRamp() ) );
disconnect( spinPrecision, SIGNAL( valueChanged( int ) ), this, SLOT( labelFormatChanged() ) );
disconnect( cbxTrimTrailingZeroes, SIGNAL( toggled( bool ) ), this, SLOT( labelFormatChanged() ) );
disconnect( txtLegendFormat, SIGNAL( textChanged( QString ) ), this, SLOT( labelFormatChanged() ) );
disconnect( minSizeSpinBox, SIGNAL( valueChanged( double ) ), this, SLOT( reapplySizes() ) );
disconnect( maxSizeSpinBox, SIGNAL( valueChanged( double ) ), this, SLOT( reapplySizes() ) );
disconnect( mModel, SIGNAL( rowsMoved() ), this, SLOT( rowsMoved() ) );
disconnect( mModel, SIGNAL( dataChanged( QModelIndex, QModelIndex ) ), this, SLOT( modelDataChanged() ) );
}
void QgsGraduatedSymbolRendererV2Widget::updateUiFromRenderer( bool updateCount )
{
disconnectUpdateHandlers();
updateGraduatedSymbolIcon();
// update UI from the graduated renderer (update combo boxes, view)
if ( mRenderer->mode() < cboGraduatedMode->count() )
cboGraduatedMode->setCurrentIndex( mRenderer->mode() );
// Only update class count if different - otherwise typing value gets very messy
int nclasses = mRenderer->ranges().count();
if ( nclasses && updateCount )
spinGraduatedClasses->setValue( mRenderer->ranges().count() );
// set column
QString attrName = mRenderer->classAttribute();
mExpressionWidget->setField( attrName );
mHistogramWidget->setSourceFieldExp( attrName );
// set source symbol
if ( mRenderer->sourceSymbol() )
{
delete mGraduatedSymbol;
mGraduatedSymbol = mRenderer->sourceSymbol()->clone();
updateGraduatedSymbolIcon();
}
mModel->setRenderer( mRenderer );
viewGraduated->setModel( mModel );
if ( mGraduatedSymbol )
{
mSizeUnitWidget->blockSignals( true );
mSizeUnitWidget->setUnit( mGraduatedSymbol->outputUnit() );
mSizeUnitWidget->setMapUnitScale( mGraduatedSymbol->mapUnitScale() );
mSizeUnitWidget->blockSignals( false );
}
// set source color ramp
methodComboBox->blockSignals( true );
if ( mRenderer->graduatedMethod() == QgsGraduatedSymbolRendererV2::GraduatedColor )
{
methodComboBox->setCurrentIndex( 0 );
if ( mRenderer->sourceColorRamp() )
cboGraduatedColorRamp->setSourceColorRamp( mRenderer->sourceColorRamp() );
cbxInvertedColorRamp->setChecked( mRenderer->invertedColorRamp() );
}
else
{
methodComboBox->setCurrentIndex( 1 );
if ( mRenderer->ranges().count() ) // avoid overiding default size with zeros
{
minSizeSpinBox->setValue( mRenderer->minSymbolSize() );
maxSizeSpinBox->setValue( mRenderer->maxSymbolSize() );
}
}
mMethodStackedWidget->setCurrentIndex( methodComboBox->currentIndex() );
methodComboBox->blockSignals( false );
QgsRendererRangeV2LabelFormat labelFormat = mRenderer->labelFormat();
txtLegendFormat->setText( labelFormat.format() );
spinPrecision->setValue( labelFormat.precision() );
cbxTrimTrailingZeroes->setChecked( labelFormat.trimTrailingZeroes() );
viewGraduated->resizeColumnToContents( 0 );
viewGraduated->resizeColumnToContents( 1 );
viewGraduated->resizeColumnToContents( 2 );
mHistogramWidget->refreshAndRedraw();
connectUpdateHandlers();
}
void QgsGraduatedSymbolRendererV2Widget::graduatedColumnChanged( QString field )
{
mRenderer->setClassAttribute( field );
}
void QgsGraduatedSymbolRendererV2Widget::on_methodComboBox_currentIndexChanged( int idx )
{
mMethodStackedWidget->setCurrentIndex( idx );
if ( idx == 0 )
{
mRenderer->setGraduatedMethod( QgsGraduatedSymbolRendererV2::GraduatedColor );
QgsVectorColorRampV2* ramp = cboGraduatedColorRamp->currentColorRamp();
if ( ramp == NULL )
{
if ( cboGraduatedColorRamp->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;
}
mRenderer->setSourceColorRamp( ramp->clone() );
reapplyColorRamp();
}
else
{
mRenderer->setGraduatedMethod( QgsGraduatedSymbolRendererV2::GraduatedSize );
reapplySizes();
}
}
void QgsGraduatedSymbolRendererV2Widget::refreshRanges( bool reset )
{
if ( !mModel )
return;
mModel->updateSymbology( reset );
}
void QgsGraduatedSymbolRendererV2Widget::classifyGraduated()
{
QString attrName = mExpressionWidget->currentField();
int nclasses = spinGraduatedClasses->value();
QSharedPointer<QgsVectorColorRampV2> ramp( cboGraduatedColorRamp->currentColorRamp() );
if ( !ramp )
{
if ( cboGraduatedColorRamp->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;
}
QgsGraduatedSymbolRendererV2::Mode mode;
if ( cboGraduatedMode->currentIndex() == 0 )
mode = QgsGraduatedSymbolRendererV2::EqualInterval;
else if ( cboGraduatedMode->currentIndex() == 2 )
mode = QgsGraduatedSymbolRendererV2::Jenks;
else if ( cboGraduatedMode->currentIndex() == 3 )
mode = QgsGraduatedSymbolRendererV2::StdDev;
else if ( cboGraduatedMode->currentIndex() == 4 )
mode = QgsGraduatedSymbolRendererV2::Pretty;
else // default should be quantile for now
mode = QgsGraduatedSymbolRendererV2::Quantile;
// Jenks is n^2 complexity, warn for big dataset (more than 50k records)
// and give the user the chance to cancel
if ( QgsGraduatedSymbolRendererV2::Jenks == mode && mLayer->featureCount() > 50000 )
{
if ( QMessageBox::Cancel == QMessageBox::question( this, tr( "Warning" ), tr( "Natural break classification (Jenks) is O(n2) complexity, your classification may take a long time.\nPress cancel to abort breaks calculation or OK to continue." ), QMessageBox::Cancel, QMessageBox::Ok ) )
return;
}
// create and set new renderer
mRenderer->setClassAttribute( attrName );
mRenderer->setMode( mode );
if ( methodComboBox->currentIndex() == 0 )
{
QgsVectorColorRampV2* ramp = cboGraduatedColorRamp->currentColorRamp();
if ( ramp == NULL )
{
if ( cboGraduatedColorRamp->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;
}
mRenderer->setSourceColorRamp( ramp->clone() );
}
else
{
mRenderer->setSourceColorRamp( NULL );
}
QApplication::setOverrideCursor( Qt::WaitCursor );
mRenderer->updateClasses( mLayer, mode, nclasses );
if ( methodComboBox->currentIndex() == 1 )
mRenderer->setSymbolSizes( minSizeSpinBox->value(), maxSizeSpinBox->value() );
mRenderer->calculateLabelPrecision();
QApplication::restoreOverrideCursor();
// PrettyBreaks and StdDev calculation don't generate exact
// number of classes - leave user interface unchanged for these
updateUiFromRenderer( false );
}
void QgsGraduatedSymbolRendererV2Widget::reapplyColorRamp()
{
QgsVectorColorRampV2* ramp = cboGraduatedColorRamp->currentColorRamp();
if ( ramp == NULL )
return;
mRenderer->updateColorRamp( ramp, cbxInvertedColorRamp->isChecked() );
mRenderer->updateSymbols( mGraduatedSymbol );
refreshSymbolView();
}
void QgsGraduatedSymbolRendererV2Widget::reapplySizes()
{
mRenderer->setSymbolSizes( minSizeSpinBox->value(), maxSizeSpinBox->value() );
mRenderer->updateSymbols( mGraduatedSymbol );
refreshSymbolView();
}
void QgsGraduatedSymbolRendererV2Widget::changeGraduatedSymbol()
{
// Change the selected symbols alone if anything is selected
QItemSelectionModel* m = viewGraduated->selectionModel();
QModelIndexList i = m->selectedRows();
if ( m && i.size() > 0 )
{
changeSelectedSymbols();
return;
}
// Otherwise change the base mGraduatedSymbol
QgsSymbolV2* newSymbol = mGraduatedSymbol->clone();
QgsSymbolV2SelectorDialog dlg( newSymbol, mStyle, mLayer, this );
if ( !dlg.exec() )
{
delete newSymbol;
return;
}
mGraduatedSymbol = newSymbol;
mSizeUnitWidget->blockSignals( true );
mSizeUnitWidget->setUnit( mGraduatedSymbol->outputUnit() );
mSizeUnitWidget->setMapUnitScale( mGraduatedSymbol->mapUnitScale() );
mSizeUnitWidget->blockSignals( false );
updateGraduatedSymbolIcon();
mRenderer->updateSymbols( mGraduatedSymbol );
refreshSymbolView();
}
void QgsGraduatedSymbolRendererV2Widget::updateGraduatedSymbolIcon()
{
QIcon icon = QgsSymbolLayerV2Utils::symbolPreviewIcon( mGraduatedSymbol, btnChangeGraduatedSymbol->iconSize() );
btnChangeGraduatedSymbol->setIcon( icon );
}
#if 0
int QgsRendererV2PropertiesDialog::currentRangeRow()
{
QModelIndex idx = viewGraduated->selectionModel()->currentIndex();
if ( !idx.isValid() )
return -1;
return idx.row();
}
#endif
QList<int> QgsGraduatedSymbolRendererV2Widget::selectedClasses()
{
QList<int> rows;
QModelIndexList selectedRows = viewGraduated->selectionModel()->selectedRows();
foreach ( QModelIndex r, selectedRows )
{
if ( r.isValid() )
{
rows.append( r.row() );
}
}
return rows;
}
QgsRangeList QgsGraduatedSymbolRendererV2Widget::selectedRanges()
{
QgsRangeList selectedRanges;
QModelIndexList selectedRows = viewGraduated->selectionModel()->selectedRows();
QModelIndexList::const_iterator sIt = selectedRows.constBegin();
for ( ; sIt != selectedRows.constEnd(); ++sIt )
{
selectedRanges.append( mModel->rendererRange( *sIt ) );
}
return selectedRanges;
}
void QgsGraduatedSymbolRendererV2Widget::rangesDoubleClicked( const QModelIndex & idx )
{
if ( idx.isValid() && idx.column() == 0 )
changeRangeSymbol( idx.row() );
if ( idx.isValid() && idx.column() == 1 )
changeRange( idx.row() );
}
void QgsGraduatedSymbolRendererV2Widget::rangesClicked( const QModelIndex & idx )
{
if ( !idx.isValid() )
mRowSelected = -1;
else
mRowSelected = idx.row();
}
void QgsGraduatedSymbolRendererV2Widget::changeSelectedSymbols()
{
QItemSelectionModel* m = viewGraduated->selectionModel();
QModelIndexList selectedIndexes = m->selectedRows( 1 );
if ( m && selectedIndexes.size() > 0 )
{
QgsSymbolV2* newSymbol = mGraduatedSymbol->clone();
QgsSymbolV2SelectorDialog dlg( newSymbol, mStyle, mLayer, this );
if ( !dlg.exec() )
{
delete newSymbol;
return;
}
foreach ( QModelIndex idx, selectedIndexes )
{
if ( idx.isValid() )
{
int rangeIdx = idx.row();
QgsSymbolV2* newRangeSymbol = newSymbol->clone();
newRangeSymbol->setColor( mRenderer->ranges()[rangeIdx].symbol()->color() );
mRenderer->updateRangeSymbol( rangeIdx, newRangeSymbol );
}
}
}
refreshSymbolView();
}
void QgsGraduatedSymbolRendererV2Widget::changeRangeSymbol( int rangeIdx )
{
QgsSymbolV2* newSymbol = mRenderer->ranges()[rangeIdx].symbol()->clone();
QgsSymbolV2SelectorDialog dlg( newSymbol, mStyle, mLayer, this );
if ( !dlg.exec() )
{
delete newSymbol;
return;
}
mRenderer->updateRangeSymbol( rangeIdx, newSymbol );
mHistogramWidget->refreshHistogram();
}
void QgsGraduatedSymbolRendererV2Widget::changeRange( int rangeIdx )
{
QgsLUDialog dialog( this );
const QgsRendererRangeV2& range = mRenderer->ranges()[rangeIdx];
// Add arbitrary 2 to number of decimal places to retain a bit extra.
// Ensures users can see if legend is not completely honest!
int decimalPlaces = mRenderer->labelFormat().precision() + 2;
if ( decimalPlaces < 0 ) decimalPlaces = 0;
dialog.setLowerValue( QString::number( range.lowerValue(), 'f', decimalPlaces ) );
dialog.setUpperValue( QString::number( range.upperValue(), 'f', decimalPlaces ) );
if ( dialog.exec() == QDialog::Accepted )
{
double lowerValue = dialog.lowerValue().toDouble();
double upperValue = dialog.upperValue().toDouble();
mRenderer->updateRangeUpperValue( rangeIdx, upperValue );
mRenderer->updateRangeLowerValue( rangeIdx, lowerValue );
//If the boundaries have to stay linked, we update the ranges above and below, as well as their label if needed
if ( cbxLinkBoundaries->isChecked() )
{
if ( rangeIdx > 0 )
{
mRenderer->updateRangeUpperValue( rangeIdx - 1, lowerValue );
}
if ( rangeIdx < mRenderer->ranges().size() - 1 )
{
mRenderer->updateRangeLowerValue( rangeIdx + 1, upperValue );
}
}
}
mHistogramWidget->refreshHistogram();
}
void QgsGraduatedSymbolRendererV2Widget::addClass()
{
mModel->addClass( mGraduatedSymbol );
mHistogramWidget->refreshHistogram();
}
void QgsGraduatedSymbolRendererV2Widget::deleteClasses()
{
QList<int> classIndexes = selectedClasses();
mModel->deleteRows( classIndexes );
mHistogramWidget->refreshHistogram();
}
void QgsGraduatedSymbolRendererV2Widget::deleteAllClasses()
{
mModel->removeAllRows();
mHistogramWidget->refreshHistogram();
}
bool QgsGraduatedSymbolRendererV2Widget::rowsOrdered()
{
const QgsRangeList &ranges = mRenderer->ranges();
bool ordered = true;
for ( int i = 1;i < ranges.size();++i )
{
if ( ranges[i] < ranges[i-1] )
{
ordered = false;
break;
}
}
return ordered;
}
void QgsGraduatedSymbolRendererV2Widget::toggleBoundariesLink( bool linked )
{
//If the checkbox controlling the link between boundaries was unchecked and we check it, we have to link the boundaries
//This is done by updating all lower ranges to the upper value of the range above
if ( linked )
{
if ( ! rowsOrdered() )
{
int result = QMessageBox::warning(
this,
tr( "Linked range warning" ),
tr( "Rows will be reordered before linking boundaries. Continue?" ),
QMessageBox::Ok | QMessageBox::Cancel );
if ( result != QMessageBox::Ok )
{
cbxLinkBoundaries->setChecked( false );
return;
}
mRenderer->sortByValue();
}
// Ok to proceed
for ( int i = 1;i < mRenderer->ranges().size();++i )
{
mRenderer->updateRangeLowerValue( i, mRenderer->ranges()[i-1].upperValue() );
}
refreshSymbolView();
}
}
void QgsGraduatedSymbolRendererV2Widget::changeCurrentValue( QStandardItem * item )
{
if ( item->column() == 2 )
{
QString label = item->text();
int idx = item->row();
mRenderer->updateRangeLabel( idx, label );
}
}
void QgsGraduatedSymbolRendererV2Widget::rotationFieldChanged( QString fldName )
{
mRenderer->setRotationField( fldName );
}
void QgsGraduatedSymbolRendererV2Widget::sizeScaleFieldChanged( QString fldName )
{
mRenderer->setSizeScaleField( fldName );
}
void QgsGraduatedSymbolRendererV2Widget::scaleMethodChanged( QgsSymbolV2::ScaleMethod scaleMethod )
{