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qgsmodeldesignerdialog.cpp
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qgsmodeldesignerdialog.cpp
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/***************************************************************************
qgsmodeldesignerdialog.cpp
------------------------
Date : March 2020
Copyright : (C) 2020 Nyall Dawson
Email : nyall dot dawson 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 "qgsmodeldesignerdialog.h"
#include "qgssettings.h"
#include "qgsapplication.h"
#include "qgsfileutils.h"
#include "qgsmessagebar.h"
#include "qgsprocessingmodelalgorithm.h"
#include "qgsprocessingregistry.h"
#include "qgsprocessingalgorithm.h"
#include "qgsgui.h"
#include "qgsprocessingparametertype.h"
#include "qgsmodelundocommand.h"
#include "qgsmodelviewtoolselect.h"
#include "qgsmodelviewtoolpan.h"
#include "qgsmodelgraphicsscene.h"
#include "qgsmodelcomponentgraphicitem.h"
#include "processing/models/qgsprocessingmodelgroupbox.h"
#include "processing/models/qgsmodelinputreorderwidget.h"
#include "processing/models/qgsmodeloutputreorderwidget.h"
#include "qgsmessageviewer.h"
#include "qgsmessagebaritem.h"
#include "qgspanelwidget.h"
#include "qgsprocessingmultipleselectiondialog.h"
#include "qgsprocessinghelpeditorwidget.h"
#include "qgsscreenhelper.h"
#include "qgsmessagelog.h"
#include "qgsprocessingalgorithmdialogbase.h"
#include "qgsproject.h"
#include <QShortcut>
#include <QKeySequence>
#include <QFileDialog>
#include <QPdfWriter>
#include <QSvgGenerator>
#include <QToolButton>
#include <QCloseEvent>
#include <QMessageBox>
#include <QUndoView>
#include <QPushButton>
#include <QUrl>
#include <QTextStream>
#include <QActionGroup>
///@cond NOT_STABLE
QgsModelerToolboxModel::QgsModelerToolboxModel( QObject *parent )
: QgsProcessingToolboxProxyModel( parent )
{
}
Qt::ItemFlags QgsModelerToolboxModel::flags( const QModelIndex &index ) const
{
Qt::ItemFlags f = QgsProcessingToolboxProxyModel::flags( index );
const QModelIndex sourceIndex = mapToSource( index );
if ( toolboxModel()->isAlgorithm( sourceIndex ) )
{
f = f | Qt::ItemIsDragEnabled;
}
return f;
}
Qt::DropActions QgsModelerToolboxModel::supportedDragActions() const
{
return Qt::CopyAction;
}
QgsModelDesignerDialog::QgsModelDesignerDialog( QWidget *parent, Qt::WindowFlags flags )
: QMainWindow( parent, flags )
, mToolsActionGroup( new QActionGroup( this ) )
{
setupUi( this );
mLayerStore.setProject( QgsProject::instance() );
mScreenHelper = new QgsScreenHelper( this );
setAttribute( Qt::WA_DeleteOnClose );
setDockOptions( dockOptions() | QMainWindow::GroupedDragging );
setWindowFlags( Qt::WindowMinimizeButtonHint |
Qt::WindowMaximizeButtonHint |
Qt::WindowCloseButtonHint );
QgsGui::enableAutoGeometryRestore( this );
mModel = std::make_unique< QgsProcessingModelAlgorithm >();
mModel->setProvider( QgsApplication::processingRegistry()->providerById( QStringLiteral( "model" ) ) );
mUndoStack = new QUndoStack( this );
connect( mUndoStack, &QUndoStack::indexChanged, this, [ = ]
{
if ( mIgnoreUndoStackChanges )
return;
mBlockUndoCommands++;
updateVariablesGui();
mGroupEdit->setText( mModel->group() );
mNameEdit->setText( mModel->displayName() );
mBlockUndoCommands--;
repaintModel();
} );
mPropertiesDock->setFeatures( QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetMovable );
mInputsDock->setFeatures( QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetMovable );
mAlgorithmsDock->setFeatures( QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetMovable );
mVariablesDock->setFeatures( QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetMovable | QDockWidget::DockWidgetClosable );
mAlgorithmsTree->header()->setVisible( false );
mAlgorithmSearchEdit->setShowSearchIcon( true );
mAlgorithmSearchEdit->setPlaceholderText( tr( "Search…" ) );
connect( mAlgorithmSearchEdit, &QgsFilterLineEdit::textChanged, mAlgorithmsTree, &QgsProcessingToolboxTreeView::setFilterString );
mInputsTreeWidget->header()->setVisible( false );
mInputsTreeWidget->setAlternatingRowColors( true );
mInputsTreeWidget->setDragDropMode( QTreeWidget::DragOnly );
mInputsTreeWidget->setDropIndicatorShown( true );
mNameEdit->setPlaceholderText( tr( "Enter model name here" ) );
mGroupEdit->setPlaceholderText( tr( "Enter group name here" ) );
mMessageBar = new QgsMessageBar();
mMessageBar->setSizePolicy( QSizePolicy::Minimum, QSizePolicy::Fixed );
mainLayout->insertWidget( 0, mMessageBar );
mView->setAcceptDrops( true );
QgsSettings settings;
connect( mActionClose, &QAction::triggered, this, &QWidget::close );
connect( mActionNew, &QAction::triggered, this, &QgsModelDesignerDialog::newModel );
connect( mActionZoomIn, &QAction::triggered, this, &QgsModelDesignerDialog::zoomIn );
connect( mActionZoomOut, &QAction::triggered, this, &QgsModelDesignerDialog::zoomOut );
connect( mActionZoomActual, &QAction::triggered, this, &QgsModelDesignerDialog::zoomActual );
connect( mActionZoomToItems, &QAction::triggered, this, &QgsModelDesignerDialog::zoomFull );
connect( mActionExportImage, &QAction::triggered, this, &QgsModelDesignerDialog::exportToImage );
connect( mActionExportPdf, &QAction::triggered, this, &QgsModelDesignerDialog::exportToPdf );
connect( mActionExportSvg, &QAction::triggered, this, &QgsModelDesignerDialog::exportToSvg );
connect( mActionExportPython, &QAction::triggered, this, &QgsModelDesignerDialog::exportAsPython );
connect( mActionSave, &QAction::triggered, this, [ = ] { saveModel( false ); } );
connect( mActionSaveAs, &QAction::triggered, this, [ = ] { saveModel( true ); } );
connect( mActionDeleteComponents, &QAction::triggered, this, &QgsModelDesignerDialog::deleteSelected );
connect( mActionSnapSelected, &QAction::triggered, mView, &QgsModelGraphicsView::snapSelected );
connect( mActionValidate, &QAction::triggered, this, &QgsModelDesignerDialog::validate );
connect( mActionReorderInputs, &QAction::triggered, this, &QgsModelDesignerDialog::reorderInputs );
connect( mActionReorderOutputs, &QAction::triggered, this, &QgsModelDesignerDialog::reorderOutputs );
connect( mActionEditHelp, &QAction::triggered, this, &QgsModelDesignerDialog::editHelp );
connect( mReorderInputsButton, &QPushButton::clicked, this, &QgsModelDesignerDialog::reorderInputs );
connect( mActionRun, &QAction::triggered, this, &QgsModelDesignerDialog::run );
mActionSnappingEnabled->setChecked( settings.value( QStringLiteral( "/Processing/Modeler/enableSnapToGrid" ), false ).toBool() );
connect( mActionSnappingEnabled, &QAction::toggled, this, [ = ]( bool enabled )
{
mView->snapper()->setSnapToGrid( enabled );
QgsSettings().setValue( QStringLiteral( "/Processing/Modeler/enableSnapToGrid" ), enabled );
} );
mView->snapper()->setSnapToGrid( mActionSnappingEnabled->isChecked() );
connect( mActionSelectAll, &QAction::triggered, this, [ = ]
{
mScene->selectAll();
} );
QStringList docksTitle = settings.value( QStringLiteral( "ModelDesigner/hiddenDocksTitle" ), QStringList(), QgsSettings::App ).toStringList();
QStringList docksActive = settings.value( QStringLiteral( "ModelDesigner/hiddenDocksActive" ), QStringList(), QgsSettings::App ).toStringList();
if ( !docksTitle.isEmpty() )
{
for ( const auto &title : docksTitle )
{
mPanelStatus.insert( title, PanelStatus( true, docksActive.contains( title ) ) );
}
}
mActionHidePanels->setChecked( !docksTitle.isEmpty() );
connect( mActionHidePanels, &QAction::toggled, this, &QgsModelDesignerDialog::setPanelVisibility );
mUndoAction = mUndoStack->createUndoAction( this );
mUndoAction->setIcon( QgsApplication::getThemeIcon( QStringLiteral( "/mActionUndo.svg" ) ) );
mUndoAction->setShortcuts( QKeySequence::Undo );
mRedoAction = mUndoStack->createRedoAction( this );
mRedoAction->setIcon( QgsApplication::getThemeIcon( QStringLiteral( "/mActionRedo.svg" ) ) );
mRedoAction->setShortcuts( QKeySequence::Redo );
mMenuEdit->insertAction( mActionDeleteComponents, mRedoAction );
mMenuEdit->insertAction( mActionDeleteComponents, mUndoAction );
mMenuEdit->insertSeparator( mActionDeleteComponents );
mToolbar->insertAction( mActionZoomIn, mUndoAction );
mToolbar->insertAction( mActionZoomIn, mRedoAction );
mToolbar->insertSeparator( mActionZoomIn );
mGroupMenu = new QMenu( tr( "Zoom To" ), this );
mMenuView->insertMenu( mActionZoomIn, mGroupMenu );
connect( mGroupMenu, &QMenu::aboutToShow, this, &QgsModelDesignerDialog::populateZoomToMenu );
//cut/copy/paste actions. Note these are not included in the ui file
//as ui files have no support for QKeySequence shortcuts
mActionCut = new QAction( tr( "Cu&t" ), this );
mActionCut->setShortcuts( QKeySequence::Cut );
mActionCut->setStatusTip( tr( "Cut" ) );
mActionCut->setIcon( QgsApplication::getThemeIcon( QStringLiteral( "/mActionEditCut.svg" ) ) );
connect( mActionCut, &QAction::triggered, this, [ = ]
{
mView->copySelectedItems( QgsModelGraphicsView::ClipboardCut );
} );
mActionCopy = new QAction( tr( "&Copy" ), this );
mActionCopy->setShortcuts( QKeySequence::Copy );
mActionCopy->setStatusTip( tr( "Copy" ) );
mActionCopy->setIcon( QgsApplication::getThemeIcon( QStringLiteral( "/mActionEditCopy.svg" ) ) );
connect( mActionCopy, &QAction::triggered, this, [ = ]
{
mView->copySelectedItems( QgsModelGraphicsView::ClipboardCopy );
} );
mActionPaste = new QAction( tr( "&Paste" ), this );
mActionPaste->setShortcuts( QKeySequence::Paste );
mActionPaste->setStatusTip( tr( "Paste" ) );
mActionPaste->setIcon( QgsApplication::getThemeIcon( QStringLiteral( "/mActionEditPaste.svg" ) ) );
connect( mActionPaste, &QAction::triggered, this, [ = ]
{
mView->pasteItems( QgsModelGraphicsView::PasteModeCursor );
} );
mMenuEdit->insertAction( mActionDeleteComponents, mActionCut );
mMenuEdit->insertAction( mActionDeleteComponents, mActionCopy );
mMenuEdit->insertAction( mActionDeleteComponents, mActionPaste );
mMenuEdit->insertSeparator( mActionDeleteComponents );
mAlgorithmsModel = new QgsModelerToolboxModel( this );
mAlgorithmsTree->setToolboxProxyModel( mAlgorithmsModel );
QgsProcessingToolboxProxyModel::Filters filters = QgsProcessingToolboxProxyModel::Filter::Modeler;
if ( settings.value( QStringLiteral( "Processing/Configuration/SHOW_ALGORITHMS_KNOWN_ISSUES" ), false ).toBool() )
{
filters |= QgsProcessingToolboxProxyModel::Filter::ShowKnownIssues;
}
mAlgorithmsTree->setFilters( filters );
mAlgorithmsTree->setDragDropMode( QTreeWidget::DragOnly );
mAlgorithmsTree->setDropIndicatorShown( true );
connect( mView, &QgsModelGraphicsView::algorithmDropped, this, [ = ]( const QString & algorithmId, const QPointF & pos )
{
addAlgorithm( algorithmId, pos );
} );
connect( mAlgorithmsTree, &QgsProcessingToolboxTreeView::doubleClicked, this, [ = ]()
{
if ( mAlgorithmsTree->selectedAlgorithm() )
addAlgorithm( mAlgorithmsTree->selectedAlgorithm()->id(), QPointF() );
} );
connect( mInputsTreeWidget, &QgsModelDesignerInputsTreeWidget::doubleClicked, this, [ = ]( const QModelIndex & )
{
const QString parameterType = mInputsTreeWidget->currentItem()->data( 0, Qt::UserRole ).toString();
addInput( parameterType, QPointF() );
} );
connect( mView, &QgsModelGraphicsView::inputDropped, this, &QgsModelDesignerDialog::addInput );
// Ctrl+= should also trigger a zoom in action
QShortcut *ctrlEquals = new QShortcut( QKeySequence( QStringLiteral( "Ctrl+=" ) ), this );
connect( ctrlEquals, &QShortcut::activated, this, &QgsModelDesignerDialog::zoomIn );
mUndoDock = new QgsDockWidget( tr( "Undo History" ), this );
mUndoDock->setObjectName( QStringLiteral( "UndoDock" ) );
mUndoView = new QUndoView( mUndoStack, this );
mUndoDock->setWidget( mUndoView );
mUndoDock->setFeatures( QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetMovable | QDockWidget::DockWidgetClosable );
addDockWidget( Qt::DockWidgetArea::LeftDockWidgetArea, mUndoDock );
tabifyDockWidget( mUndoDock, mPropertiesDock );
tabifyDockWidget( mVariablesDock, mPropertiesDock );
mPropertiesDock->raise();
tabifyDockWidget( mInputsDock, mAlgorithmsDock );
mInputsDock->raise();
connect( mVariablesEditor, &QgsVariableEditorWidget::scopeChanged, this, [ = ]
{
if ( mModel )
{
beginUndoCommand( tr( "Change Model Variables" ) );
mModel->setVariables( mVariablesEditor->variablesInActiveScope() );
endUndoCommand();
}
} );
connect( mNameEdit, &QLineEdit::textChanged, this, [ = ]( const QString & name )
{
if ( mModel )
{
beginUndoCommand( tr( "Change Model Name" ), NameChanged );
mModel->setName( name );
endUndoCommand();
updateWindowTitle();
}
} );
connect( mGroupEdit, &QLineEdit::textChanged, this, [ = ]( const QString & group )
{
if ( mModel )
{
beginUndoCommand( tr( "Change Model Group" ), GroupChanged );
mModel->setGroup( group );
endUndoCommand();
}
} );
fillInputsTree();
QToolButton *toolbuttonExportToScript = new QToolButton();
toolbuttonExportToScript->setPopupMode( QToolButton::InstantPopup );
toolbuttonExportToScript->addAction( mActionExportAsScriptAlgorithm );
toolbuttonExportToScript->setDefaultAction( mActionExportAsScriptAlgorithm );
mToolbar->insertWidget( mActionExportImage, toolbuttonExportToScript );
connect( mActionExportAsScriptAlgorithm, &QAction::triggered, this, &QgsModelDesignerDialog::exportAsScriptAlgorithm );
mActionShowComments->setChecked( settings.value( QStringLiteral( "/Processing/Modeler/ShowComments" ), true ).toBool() );
connect( mActionShowComments, &QAction::toggled, this, &QgsModelDesignerDialog::toggleComments );
mPanTool = new QgsModelViewToolPan( mView );
mPanTool->setAction( mActionPan );
mToolsActionGroup->addAction( mActionPan );
connect( mActionPan, &QAction::triggered, mPanTool, [ = ] { mView->setTool( mPanTool ); } );
mSelectTool = new QgsModelViewToolSelect( mView );
mSelectTool->setAction( mActionSelectMoveItem );
mToolsActionGroup->addAction( mActionSelectMoveItem );
connect( mActionSelectMoveItem, &QAction::triggered, mSelectTool, [ = ] { mView->setTool( mSelectTool ); } );
mView->setTool( mSelectTool );
mView->setFocus();
connect( mView, &QgsModelGraphicsView::macroCommandStarted, this, [ = ]( const QString & text )
{
mIgnoreUndoStackChanges++;
mUndoStack->beginMacro( text );
mIgnoreUndoStackChanges--;
} );
connect( mView, &QgsModelGraphicsView::macroCommandEnded, this, [ = ]
{
mIgnoreUndoStackChanges++;
mUndoStack->endMacro();
mIgnoreUndoStackChanges--;
} );
connect( mView, &QgsModelGraphicsView::beginCommand, this, [ = ]( const QString & text )
{
beginUndoCommand( text );
} );
connect( mView, &QgsModelGraphicsView::endCommand, this, [ = ]
{
endUndoCommand();
} );
connect( mView, &QgsModelGraphicsView::deleteSelectedItems, this, [ = ]
{
deleteSelected();
} );
connect( mActionAddGroupBox, &QAction::triggered, this, [ = ]
{
const QPointF viewCenter = mView->mapToScene( mView->viewport()->rect().center() );
QgsProcessingModelGroupBox group;
group.setPosition( viewCenter );
group.setDescription( tr( "New Group" ) );
beginUndoCommand( tr( "Add Group Box" ) );
model()->addGroupBox( group );
repaintModel();
endUndoCommand();
} );
updateWindowTitle();
// restore the toolbar and dock widgets positions using Qt settings API
restoreState( settings.value( QStringLiteral( "ModelDesigner/state" ), QByteArray(), QgsSettings::App ).toByteArray() );
}
QgsModelDesignerDialog::~QgsModelDesignerDialog()
{
QgsSettings settings;
if ( !mPanelStatus.isEmpty() )
{
QStringList docksTitle;
QStringList docksActive;
for ( const auto &panel : mPanelStatus.toStdMap() )
{
if ( panel.second.isVisible )
docksTitle << panel.first;
if ( panel.second.isActive )
docksActive << panel.first;
}
settings.setValue( QStringLiteral( "ModelDesigner/hiddenDocksTitle" ), docksTitle, QgsSettings::App );
settings.setValue( QStringLiteral( "ModelDesigner/hiddenDocksActive" ), docksActive, QgsSettings::App );
}
else
{
settings.remove( QStringLiteral( "ModelDesigner/hiddenDocksTitle" ), QgsSettings::App );
settings.remove( QStringLiteral( "ModelDesigner/hiddenDocksActive" ), QgsSettings::App );
}
// store the toolbar/dock widget settings using Qt settings API
settings.setValue( QStringLiteral( "ModelDesigner/state" ), saveState(), QgsSettings::App );
mIgnoreUndoStackChanges++;
delete mSelectTool; // delete mouse handles before everything else
}
void QgsModelDesignerDialog::closeEvent( QCloseEvent *event )
{
if ( checkForUnsavedChanges() )
event->accept();
else
event->ignore();
}
void QgsModelDesignerDialog::beginUndoCommand( const QString &text, int id )
{
if ( mBlockUndoCommands || !mUndoStack )
return;
if ( mActiveCommand )
endUndoCommand();
mActiveCommand = std::make_unique< QgsModelUndoCommand >( mModel.get(), text, id );
}
void QgsModelDesignerDialog::endUndoCommand()
{
if ( mBlockUndoCommands || !mActiveCommand || !mUndoStack )
return;
mActiveCommand->saveAfterState();
mIgnoreUndoStackChanges++;
mUndoStack->push( mActiveCommand.release() );
mIgnoreUndoStackChanges--;
setDirty( true );
}
QgsProcessingModelAlgorithm *QgsModelDesignerDialog::model()
{
return mModel.get();
}
void QgsModelDesignerDialog::setModel( QgsProcessingModelAlgorithm *model )
{
mModel.reset( model );
mGroupEdit->setText( mModel->group() );
mNameEdit->setText( mModel->displayName() );
repaintModel();
updateVariablesGui();
mView->centerOn( 0, 0 );
setDirty( false );
mIgnoreUndoStackChanges++;
mUndoStack->clear();
mIgnoreUndoStackChanges--;
updateWindowTitle();
}
void QgsModelDesignerDialog::loadModel( const QString &path )
{
std::unique_ptr< QgsProcessingModelAlgorithm > alg = std::make_unique< QgsProcessingModelAlgorithm >();
if ( alg->fromFile( path ) )
{
alg->setProvider( QgsApplication::processingRegistry()->providerById( QStringLiteral( "model" ) ) );
alg->setSourceFilePath( path );
setModel( alg.release() );
}
else
{
QgsMessageLog::logMessage( tr( "Could not load model %1" ).arg( path ), tr( "Processing" ), Qgis::MessageLevel::Critical );
QMessageBox::critical( this, tr( "Open Model" ), tr( "The selected model could not be loaded.\n"
"See the log for more information." ) );
}
}
void QgsModelDesignerDialog::setModelScene( QgsModelGraphicsScene *scene )
{
QgsModelGraphicsScene *oldScene = mScene;
mScene = scene;
mScene->setParent( this );
mScene->setChildAlgorithmResults( mChildResults );
mScene->setModel( mModel.get() );
mScene->setMessageBar( mMessageBar );
const QPointF center = mView->mapToScene( mView->viewport()->rect().center() );
mView->setModelScene( mScene );
mSelectTool->resetCache();
mSelectTool->setScene( mScene );
connect( mScene, &QgsModelGraphicsScene::rebuildRequired, this, [ = ]
{
if ( mBlockRepaints )
return;
repaintModel();
} );
connect( mScene, &QgsModelGraphicsScene::componentAboutToChange, this, [ = ]( const QString & description, int id ) { beginUndoCommand( description, id ); } );
connect( mScene, &QgsModelGraphicsScene::componentChanged, this, [ = ] { endUndoCommand(); } );
connect( mScene, &QgsModelGraphicsScene::showPreviousResults, this, &QgsModelDesignerDialog::showPreviousResults );
mView->centerOn( center );
if ( oldScene )
oldScene->deleteLater();
}
void QgsModelDesignerDialog::activate()
{
show();
raise();
setWindowState( windowState() & ~Qt::WindowMinimized );
activateWindow();
}
void QgsModelDesignerDialog::updateVariablesGui()
{
mBlockUndoCommands++;
std::unique_ptr< QgsExpressionContextScope > variablesScope = std::make_unique< QgsExpressionContextScope >( tr( "Model Variables" ) );
const QVariantMap modelVars = mModel->variables();
for ( auto it = modelVars.constBegin(); it != modelVars.constEnd(); ++it )
{
variablesScope->setVariable( it.key(), it.value() );
}
QgsExpressionContext variablesContext;
variablesContext.appendScope( variablesScope.release() );
mVariablesEditor->setContext( &variablesContext );
mVariablesEditor->setEditableScopeIndex( 0 );
mBlockUndoCommands--;
}
void QgsModelDesignerDialog::setDirty( bool dirty )
{
mHasChanged = dirty;
updateWindowTitle();
}
bool QgsModelDesignerDialog::validateSave( SaveAction action )
{
switch ( action )
{
case QgsModelDesignerDialog::SaveAction::SaveAsFile:
break;
case QgsModelDesignerDialog::SaveAction::SaveInProject:
if ( mNameEdit->text().trimmed().isEmpty() )
{
mMessageBar->pushWarning( QString(), tr( "Please enter a model name before saving" ) );
return false;
}
break;
}
return true;
}
bool QgsModelDesignerDialog::checkForUnsavedChanges()
{
if ( isDirty() )
{
QMessageBox::StandardButton ret = QMessageBox::question( this, tr( "Save Model?" ),
tr( "There are unsaved changes in this model. Do you want to keep those?" ),
QMessageBox::Save | QMessageBox::Cancel | QMessageBox::Discard, QMessageBox::Cancel );
switch ( ret )
{
case QMessageBox::Save:
return saveModel( false );
case QMessageBox::Discard:
return true;
default:
return false;
}
}
else
{
return true;
}
}
void QgsModelDesignerDialog::setLastRunChildAlgorithmResults( const QVariantMap &results )
{
mChildResults = results;
if ( mScene )
mScene->setChildAlgorithmResults( mChildResults );
}
void QgsModelDesignerDialog::setLastRunChildAlgorithmInputs( const QVariantMap &inputs )
{
mChildInputs = inputs;
if ( mScene )
mScene->setChildAlgorithmInputs( mChildInputs );
}
void QgsModelDesignerDialog::setModelName( const QString &name )
{
mNameEdit->setText( name );
}
void QgsModelDesignerDialog::zoomIn()
{
mView->setTransformationAnchor( QGraphicsView::NoAnchor );
QPointF point = mView->mapToScene( QPoint( mView->viewport()->width() / 2.0, mView->viewport()->height() / 2 ) );
QgsSettings settings;
const double factor = settings.value( QStringLiteral( "/qgis/zoom_favor" ), 2.0 ).toDouble();
mView->scale( factor, factor );
mView->centerOn( point );
}
void QgsModelDesignerDialog::zoomOut()
{
mView->setTransformationAnchor( QGraphicsView::NoAnchor );
QPointF point = mView->mapToScene( QPoint( mView->viewport()->width() / 2.0, mView->viewport()->height() / 2 ) );
QgsSettings settings;
const double factor = 1.0 / settings.value( QStringLiteral( "/qgis/zoom_favor" ), 2.0 ).toDouble();
mView->scale( factor, factor );
mView->centerOn( point );
}
void QgsModelDesignerDialog::zoomActual()
{
QPointF point = mView->mapToScene( QPoint( mView->viewport()->width() / 2.0, mView->viewport()->height() / 2 ) );
mView->resetTransform();
mView->scale( mScreenHelper->screenDpi() / 96, mScreenHelper->screenDpi() / 96 );
mView->centerOn( point );
}
void QgsModelDesignerDialog::zoomFull()
{
QRectF totalRect = mView->scene()->itemsBoundingRect();
totalRect.adjust( -10, -10, 10, 10 );
mView->fitInView( totalRect, Qt::KeepAspectRatio );
}
void QgsModelDesignerDialog::newModel()
{
if ( !checkForUnsavedChanges() )
return;
std::unique_ptr< QgsProcessingModelAlgorithm > alg = std::make_unique< QgsProcessingModelAlgorithm >();
alg->setProvider( QgsApplication::processingRegistry()->providerById( QStringLiteral( "model" ) ) );
setModel( alg.release() );
}
void QgsModelDesignerDialog::exportToImage()
{
QgsSettings settings;
QString lastExportDir = settings.value( QStringLiteral( "lastModelDesignerExportDir" ), QDir::homePath(), QgsSettings::App ).toString();
QString filename = QFileDialog::getSaveFileName( this, tr( "Save Model as Image" ),
lastExportDir,
tr( "PNG files (*.png *.PNG)" ) );
// return dialog focus on Mac
activateWindow();
raise();
if ( filename.isEmpty() )
return;
filename = QgsFileUtils::ensureFileNameHasExtension( filename, QStringList() << QStringLiteral( "png" ) );
const QFileInfo saveFileInfo( filename );
settings.setValue( QStringLiteral( "lastModelDesignerExportDir" ), saveFileInfo.absolutePath(), QgsSettings::App );
repaintModel( false );
QRectF totalRect = mView->scene()->itemsBoundingRect();
totalRect.adjust( -10, -10, 10, 10 );
const QRectF imageRect = QRectF( 0, 0, totalRect.width(), totalRect.height() );
QImage img( totalRect.width(), totalRect.height(),
QImage::Format_ARGB32_Premultiplied );
img.fill( Qt::white );
QPainter painter;
painter.setRenderHint( QPainter::Antialiasing );
painter.begin( &img );
mView->scene()->render( &painter, imageRect, totalRect );
painter.end();
img.save( filename );
mMessageBar->pushMessage( QString(), tr( "Successfully exported model as image to <a href=\"%1\">%2</a>" ).arg( QUrl::fromLocalFile( filename ).toString(), QDir::toNativeSeparators( filename ) ), Qgis::MessageLevel::Success, 0 );
repaintModel( true );
}
void QgsModelDesignerDialog::exportToPdf()
{
QgsSettings settings;
QString lastExportDir = settings.value( QStringLiteral( "lastModelDesignerExportDir" ), QDir::homePath(), QgsSettings::App ).toString();
QString filename = QFileDialog::getSaveFileName( this, tr( "Save Model as PDF" ),
lastExportDir,
tr( "PDF files (*.pdf *.PDF)" ) );
// return dialog focus on Mac
activateWindow();
raise();
if ( filename.isEmpty() )
return;
filename = QgsFileUtils::ensureFileNameHasExtension( filename, QStringList() << QStringLiteral( "pdf" ) );
const QFileInfo saveFileInfo( filename );
settings.setValue( QStringLiteral( "lastModelDesignerExportDir" ), saveFileInfo.absolutePath(), QgsSettings::App );
repaintModel( false );
QRectF totalRect = mView->scene()->itemsBoundingRect();
totalRect.adjust( -10, -10, 10, 10 );
const QRectF printerRect = QRectF( 0, 0, totalRect.width(), totalRect.height() );
QPdfWriter pdfWriter( filename );
const double scaleFactor = 96 / 25.4; // based on 96 dpi sizes
QPageLayout pageLayout( QPageSize( totalRect.size() / scaleFactor, QPageSize::Millimeter ),
QPageLayout::Portrait,
QMarginsF( 0, 0, 0, 0 ) );
pageLayout.setMode( QPageLayout::FullPageMode );
pdfWriter.setPageLayout( pageLayout );
QPainter painter( &pdfWriter );
mView->scene()->render( &painter, printerRect, totalRect );
painter.end();
mMessageBar->pushMessage( QString(), tr( "Successfully exported model as PDF to <a href=\"%1\">%2</a>" ).arg( QUrl::fromLocalFile( filename ).toString(),
QDir::toNativeSeparators( filename ) ), Qgis::MessageLevel::Success, 0 );
repaintModel( true );
}
void QgsModelDesignerDialog::exportToSvg()
{
QgsSettings settings;
QString lastExportDir = settings.value( QStringLiteral( "lastModelDesignerExportDir" ), QDir::homePath(), QgsSettings::App ).toString();
QString filename = QFileDialog::getSaveFileName( this, tr( "Save Model as SVG" ),
lastExportDir,
tr( "SVG files (*.svg *.SVG)" ) );
// return dialog focus on Mac
activateWindow();
raise();
if ( filename.isEmpty() )
return;
filename = QgsFileUtils::ensureFileNameHasExtension( filename, QStringList() << QStringLiteral( "svg" ) );
const QFileInfo saveFileInfo( filename );
settings.setValue( QStringLiteral( "lastModelDesignerExportDir" ), saveFileInfo.absolutePath(), QgsSettings::App );
repaintModel( false );
QRectF totalRect = mView->scene()->itemsBoundingRect();
totalRect.adjust( -10, -10, 10, 10 );
const QRectF svgRect = QRectF( 0, 0, totalRect.width(), totalRect.height() );
QSvgGenerator svg;
svg.setFileName( filename );
svg.setSize( QSize( totalRect.width(), totalRect.height() ) );
svg.setViewBox( svgRect );
svg.setTitle( mModel->displayName() );
QPainter painter( &svg );
mView->scene()->render( &painter, svgRect, totalRect );
painter.end();
mMessageBar->pushMessage( QString(), tr( "Successfully exported model as SVG to <a href=\"%1\">%2</a>" ).arg( QUrl::fromLocalFile( filename ).toString(), QDir::toNativeSeparators( filename ) ), Qgis::MessageLevel::Success, 0 );
repaintModel( true );
}
void QgsModelDesignerDialog::exportAsPython()
{
QgsSettings settings;
QString lastExportDir = settings.value( QStringLiteral( "lastModelDesignerExportDir" ), QDir::homePath(), QgsSettings::App ).toString();
QString filename = QFileDialog::getSaveFileName( this, tr( "Save Model as Python Script" ),
lastExportDir,
tr( "Processing scripts (*.py *.PY)" ) );
// return dialog focus on Mac
activateWindow();
raise();
if ( filename.isEmpty() )
return;
filename = QgsFileUtils::ensureFileNameHasExtension( filename, QStringList() << QStringLiteral( "py" ) );
const QFileInfo saveFileInfo( filename );
settings.setValue( QStringLiteral( "lastModelDesignerExportDir" ), saveFileInfo.absolutePath(), QgsSettings::App );
const QString text = mModel->asPythonCode( QgsProcessing::PythonOutputType::PythonQgsProcessingAlgorithmSubclass, 4 ).join( '\n' );
QFile outFile( filename );
if ( !outFile.open( QIODevice::WriteOnly | QIODevice::Truncate ) )
{
return;
}
QTextStream fout( &outFile );
fout << text;
outFile.close();
mMessageBar->pushMessage( QString(), tr( "Successfully exported model as Python script to <a href=\"%1\">%2</a>" ).arg( QUrl::fromLocalFile( filename ).toString(), QDir::toNativeSeparators( filename ) ), Qgis::MessageLevel::Success, 0 );
}
void QgsModelDesignerDialog::toggleComments( bool show )
{
QgsSettings().setValue( QStringLiteral( "/Processing/Modeler/ShowComments" ), show );
repaintModel( true );
}
void QgsModelDesignerDialog::updateWindowTitle()
{
QString title = tr( "Model Designer" );
if ( !mModel->name().isEmpty() )
title = QStringLiteral( "%1 - %2" ).arg( title, mModel->name() );
if ( isDirty() )
title.prepend( '*' );
setWindowTitle( title );
}
void QgsModelDesignerDialog::deleteSelected()
{
QList< QgsModelComponentGraphicItem * > items = mScene->selectedComponentItems();
if ( items.empty() )
return;
if ( items.size() == 1 )
{
items.at( 0 )->deleteComponent();
return;
}
std::sort( items.begin(), items.end(), []( QgsModelComponentGraphicItem * p1, QgsModelComponentGraphicItem * p2 )
{
// try to delete the easy stuff first, so comments, then outputs, as nothing will depend on these...
if ( dynamic_cast< QgsModelCommentGraphicItem *>( p1 ) )
return true;
else if ( dynamic_cast< QgsModelCommentGraphicItem *>( p2 ) )
return false;
else if ( dynamic_cast< QgsModelGroupBoxGraphicItem *>( p1 ) )
return true;
else if ( dynamic_cast< QgsModelGroupBoxGraphicItem *>( p2 ) )
return false;
else if ( dynamic_cast< QgsModelOutputGraphicItem *>( p1 ) )
return true;
else if ( dynamic_cast< QgsModelOutputGraphicItem *>( p2 ) )
return false;
else if ( dynamic_cast< QgsModelChildAlgorithmGraphicItem *>( p1 ) )
return true;
else if ( dynamic_cast< QgsModelChildAlgorithmGraphicItem *>( p2 ) )
return false;
return false;
} );
beginUndoCommand( tr( "Delete Components" ) );
QVariant prevState = mModel->toVariant();
mBlockUndoCommands++;
mBlockRepaints = true;
bool failed = false;
while ( !items.empty() )
{
QgsModelComponentGraphicItem *toDelete = nullptr;
for ( QgsModelComponentGraphicItem *item : items )
{
if ( item->canDeleteComponent() )
{
toDelete = item;
break;
}
}
if ( !toDelete )
{
failed = true;
break;
}
toDelete->deleteComponent();
items.removeAll( toDelete );
}
if ( failed )
{
mModel->loadVariant( prevState );
QMessageBox::warning( nullptr, QObject::tr( "Could not remove components" ),
QObject::tr( "Components depend on the selected items.\n"
"Try to remove them before trying deleting these components." ) );
mBlockUndoCommands--;
mActiveCommand.reset();
}
else
{
mBlockUndoCommands--;
endUndoCommand();
}
mBlockRepaints = false;
repaintModel();
}
void QgsModelDesignerDialog::populateZoomToMenu()
{
mGroupMenu->clear();
for ( const QgsProcessingModelGroupBox &box : model()->groupBoxes() )
{
if ( QgsModelComponentGraphicItem *item = mScene->groupBoxItem( box.uuid() ) )
{
QAction *zoomAction = new QAction( box.description(), mGroupMenu );
connect( zoomAction, &QAction::triggered, this, [ = ]
{
QRectF groupRect = item->mapToScene( item->boundingRect() ).boundingRect();
groupRect.adjust( -10, -10, 10, 10 );
mView->fitInView( groupRect, Qt::KeepAspectRatio );
mView->centerOn( item );
} );
mGroupMenu->addAction( zoomAction );
}
}
}
void QgsModelDesignerDialog::setPanelVisibility( bool hidden )
{
const QList<QDockWidget *> docks = findChildren<QDockWidget *>();
const QList<QTabBar *> tabBars = findChildren<QTabBar *>();
if ( hidden )
{
mPanelStatus.clear();
//record status of all docks
for ( QDockWidget *dock : docks )
{
mPanelStatus.insert( dock->windowTitle(), PanelStatus( dock->isVisible(), false ) );
dock->setVisible( false );
}
//record active dock tabs
for ( QTabBar *tabBar : tabBars )
{
QString currentTabTitle = tabBar->tabText( tabBar->currentIndex() );
mPanelStatus[ currentTabTitle ].isActive = true;
}
}
else
{
//restore visibility of all docks
for ( QDockWidget *dock : docks )
{
if ( mPanelStatus.contains( dock->windowTitle() ) )
{
dock->setVisible( mPanelStatus.value( dock->windowTitle() ).isVisible );
}
}
//restore previously active dock tabs
for ( QTabBar *tabBar : tabBars )
{
//loop through all tabs in tab bar
for ( int i = 0; i < tabBar->count(); ++i )
{
QString tabTitle = tabBar->tabText( i );
if ( mPanelStatus.contains( tabTitle ) && mPanelStatus.value( tabTitle ).isActive )
{
tabBar->setCurrentIndex( i );
}
}
}
mPanelStatus.clear();
}
}
void QgsModelDesignerDialog::editHelp()
{
QgsProcessingHelpEditorDialog dialog( this );
dialog.setWindowTitle( tr( "Edit Model Help" ) );
dialog.setAlgorithm( mModel.get() );
if ( dialog.exec() )
{
beginUndoCommand( tr( "Edit Model Help" ) );
mModel->setHelpContent( dialog.helpContent() );
endUndoCommand();
}
}