[processing] Port CRS widget wrapper to c++ classes

python/gui/auto_generated/processing/qgsprocessingguiregistry.sip.in

@@ -105,7 +105,7 @@ If no factory is registered which handles the given ``parameter``, a None will b
 
     QgsProcessingModelerParameterWidget *createModelerParameterWidget( QgsProcessingModelAlgorithm *model,
         const QString &childId,
-        const QgsProcessingParameterDefinition *parameter, const QgsProcessingContext &context ) /Factory/;
+        const QgsProcessingParameterDefinition *parameter, QgsProcessingContext &context ) /Factory/;
 %Docstring
 Creates a new modeler parameter widget for the given ``parameter``. This widget allows
 configuration of the parameter's value when used inside a Processing ``model``.

python/gui/auto_generated/processing/qgsprocessingmodelerparameterwidget.sip.in

@@ -39,7 +39,7 @@ QgsGui.processingGuiRegistry()->createModelerParameterWidget().
     QgsProcessingModelerParameterWidget( QgsProcessingModelAlgorithm *model,
                                          const QString &childId,
                                          const QgsProcessingParameterDefinition *parameter,
-                                         const QgsProcessingContext &context,
+                                         QgsProcessingContext &context,
                                          QWidget *parent /TransferThis/ = 0 );
 %Docstring
 Constructor for QgsProcessingModelerParameterWidget, for the specified

python/gui/auto_generated/processing/qgsprocessingwidgetwrapper.sip.in

@@ -73,7 +73,7 @@ Constructor for QgsAbstractProcessingParameterWidgetWrapper, for the specified
 Returns the dialog type for which widgets and labels will be created by this wrapper.
 %End
 
-    QWidget *createWrappedWidget( const QgsProcessingContext &context ) /Factory/;
+    QWidget *createWrappedWidget( QgsProcessingContext &context ) /Factory/;
 %Docstring
 Creates and return a new wrapped widget which allows customization of the parameter's value.
 
@@ -118,7 +118,7 @@ Returns the current wrapped label, if any.
 Returns the parameter definition associated with this wrapper.
 %End
 
-    void setParameterValue( const QVariant &value, const QgsProcessingContext &context );
+    void setParameterValue( const QVariant &value, QgsProcessingContext &context );
 %Docstring
 Sets the current ``value`` for the parameter.
 
@@ -178,7 +178,7 @@ widget itself).
 .. seealso:: :py:func:`createWidget`
 %End
 
-    virtual void setWidgetValue( const QVariant &value, const QgsProcessingContext &context ) = 0;
+    virtual void setWidgetValue( const QVariant &value, QgsProcessingContext &context ) = 0;
 %Docstring
 Sets the current ``value`` for the parameter to show in the widget.
 
@@ -237,7 +237,7 @@ The ``type`` argument indicates the dialog type to create a wrapper for.
     virtual QgsProcessingModelerParameterWidget *createModelerWidgetWrapper( QgsProcessingModelAlgorithm *model,
         const QString &childId,
         const QgsProcessingParameterDefinition *parameter,
-        const QgsProcessingContext &context );
+        QgsProcessingContext &context );
 %Docstring
 Creates a new modeler parameter widget for the given ``parameter``. This widget allows
 configuration of the parameter's value when used inside a Processing ``model``.

src/gui/processing/qgsprocessingguiregistry.cpp

@@ -28,6 +28,7 @@ QgsProcessingGuiRegistry::QgsProcessingGuiRegistry()
   addAlgorithmConfigurationWidgetFactory( new QgsFilterAlgorithmConfigurationWidgetFactory() );
 
   addParameterWidgetFactory( new QgsProcessingBooleanWidgetWrapper() );
+  addParameterWidgetFactory( new QgsProcessingCrsWidgetWrapper() );
   addParameterWidgetFactory( new QgsProcessingStringWidgetWrapper() );
 }
 
@@ -101,7 +102,7 @@ QgsAbstractProcessingParameterWidgetWrapper *QgsProcessingGuiRegistry::createPar
   return mParameterWidgetFactories.value( parameterType )->createWidgetWrapper( parameter, type );
 }
 
-QgsProcessingModelerParameterWidget *QgsProcessingGuiRegistry::createModelerParameterWidget( QgsProcessingModelAlgorithm *model, const QString &childId, const QgsProcessingParameterDefinition *parameter, const QgsProcessingContext &context )
+QgsProcessingModelerParameterWidget *QgsProcessingGuiRegistry::createModelerParameterWidget( QgsProcessingModelAlgorithm *model, const QString &childId, const QgsProcessingParameterDefinition *parameter, QgsProcessingContext &context )
 {
   if ( !parameter )
     return nullptr;

src/gui/processing/qgsprocessingguiregistry.h

@@ -136,7 +136,7 @@ class GUI_EXPORT QgsProcessingGuiRegistry
      */
     QgsProcessingModelerParameterWidget *createModelerParameterWidget( QgsProcessingModelAlgorithm *model,
         const QString &childId,
-        const QgsProcessingParameterDefinition *parameter, const QgsProcessingContext &context ) SIP_FACTORY;
+        const QgsProcessingParameterDefinition *parameter, QgsProcessingContext &context ) SIP_FACTORY;
 
   private:
 

src/gui/processing/qgsprocessingmodelerparameterwidget.cpp

@@ -31,7 +31,7 @@
 
 QgsProcessingModelerParameterWidget::QgsProcessingModelerParameterWidget( QgsProcessingModelAlgorithm *model,
     const QString &childId,
-    const QgsProcessingParameterDefinition *parameter, const QgsProcessingContext &context,
+    const QgsProcessingParameterDefinition *parameter, QgsProcessingContext &context,
     QWidget *parent )
   : QWidget( parent )
   , mModel( model )

src/gui/processing/qgsprocessingmodelerparameterwidget.h

@@ -77,7 +77,7 @@ class GUI_EXPORT QgsProcessingModelerParameterWidget : public QWidget
     QgsProcessingModelerParameterWidget( QgsProcessingModelAlgorithm *model,
                                          const QString &childId,
                                          const QgsProcessingParameterDefinition *parameter,
-                                         const QgsProcessingContext &context,
+                                         QgsProcessingContext &context,
                                          QWidget *parent SIP_TRANSFERTHIS = nullptr );
 
     ~QgsProcessingModelerParameterWidget() override;
@@ -150,7 +150,7 @@ class GUI_EXPORT QgsProcessingModelerParameterWidget : public QWidget
     QgsProcessingModelAlgorithm *mModel = nullptr;
     const QString mChildId;
     const QgsProcessingParameterDefinition *mParameterDefinition = nullptr;
-    const QgsProcessingContext &mContext;
+    QgsProcessingContext &mContext;
 
     QVariant mStaticValue;
     QString mModelInputParameterName;

src/gui/processing/qgsprocessingwidgetwrapper.cpp

@@ -35,7 +35,7 @@ QgsProcessingGui::WidgetType QgsAbstractProcessingParameterWidgetWrapper::type()
   return mType;
 }
 
-QWidget *QgsAbstractProcessingParameterWidgetWrapper::createWrappedWidget( const QgsProcessingContext &context )
+QWidget *QgsAbstractProcessingParameterWidgetWrapper::createWrappedWidget( QgsProcessingContext &context )
 {
   if ( mWidget )
     return mWidget;
@@ -86,7 +86,7 @@ const QgsProcessingParameterDefinition *QgsAbstractProcessingParameterWidgetWrap
   return mParameterDefinition;
 }
 
-void QgsAbstractProcessingParameterWidgetWrapper::setParameterValue( const QVariant &value, const QgsProcessingContext &context )
+void QgsAbstractProcessingParameterWidgetWrapper::setParameterValue( const QVariant &value, QgsProcessingContext &context )
 {
   if ( mPropertyButton && value.canConvert< QgsProperty >() )
   {
@@ -207,7 +207,7 @@ void QgsAbstractProcessingParameterWidgetWrapper::setDynamicParentLayerParameter
   }
 }
 
-QgsProcessingModelerParameterWidget *QgsProcessingParameterWidgetFactoryInterface::createModelerWidgetWrapper( QgsProcessingModelAlgorithm *model, const QString &childId, const QgsProcessingParameterDefinition *parameter, const QgsProcessingContext &context )
+QgsProcessingModelerParameterWidget *QgsProcessingParameterWidgetFactoryInterface::createModelerWidgetWrapper( QgsProcessingModelAlgorithm *model, const QString &childId, const QgsProcessingParameterDefinition *parameter, QgsProcessingContext &context )
 {
   std::unique_ptr< QgsProcessingModelerParameterWidget > widget = qgis::make_unique< QgsProcessingModelerParameterWidget >( model, childId, parameter, context );
   widget->populateSources( compatibleParameterTypes(), compatibleOutputTypes(), compatibleDataTypes() );

src/gui/processing/qgsprocessingwidgetwrapper.h

@@ -106,7 +106,7 @@ class GUI_EXPORT QgsAbstractProcessingParameterWidgetWrapper : public QObject
      *
      * \see createWrappedLabel()
      */
-    QWidget *createWrappedWidget( const QgsProcessingContext &context ) SIP_FACTORY;
+    QWidget *createWrappedWidget( QgsProcessingContext &context ) SIP_FACTORY;
 
     /**
      * Creates and returns a new label to accompany widgets created by the wrapper.
@@ -147,7 +147,7 @@ class GUI_EXPORT QgsAbstractProcessingParameterWidgetWrapper : public QObject
      *
      * \see parameterValue()
      */
-    void setParameterValue( const QVariant &value, const QgsProcessingContext &context );
+    void setParameterValue( const QVariant &value, QgsProcessingContext &context );
 
     /**
      * Returns the current value of the parameter.
@@ -209,7 +209,7 @@ class GUI_EXPORT QgsAbstractProcessingParameterWidgetWrapper : public QObject
      *
      * \see widgetValue()
      */
-    virtual void setWidgetValue( const QVariant &value, const QgsProcessingContext &context ) = 0;
+    virtual void setWidgetValue( const QVariant &value, QgsProcessingContext &context ) = 0;
 
     /**
      * Returns the current value of the parameter.
@@ -293,7 +293,7 @@ class GUI_EXPORT QgsProcessingParameterWidgetFactoryInterface
     virtual QgsProcessingModelerParameterWidget *createModelerWidgetWrapper( QgsProcessingModelAlgorithm *model,
         const QString &childId,
         const QgsProcessingParameterDefinition *parameter,
-        const QgsProcessingContext &context );
+        QgsProcessingContext &context );
 
   protected:
 

src/gui/processing/qgsprocessingwidgetwrapperimpl.cpp

@@ -18,6 +18,7 @@
 #include "qgsprocessingwidgetwrapperimpl.h"
 #include "qgsprocessingparameters.h"
 #include "qgsprocessingoutputs.h"
+#include "qgsprojectionselectionwidget.h"
 #include <QLabel>
 #include <QHBoxLayout>
 #include <QCheckBox>
@@ -85,7 +86,7 @@ QLabel *QgsProcessingBooleanWidgetWrapper::createLabel()
     return QgsAbstractProcessingParameterWidgetWrapper::createLabel();
 }
 
-void QgsProcessingBooleanWidgetWrapper::setWidgetValue( const QVariant &value, const QgsProcessingContext &context )
+void QgsProcessingBooleanWidgetWrapper::setWidgetValue( const QVariant &value, QgsProcessingContext &context )
 {
   switch ( type() )
   {
@@ -162,6 +163,127 @@ QgsAbstractProcessingParameterWidgetWrapper *QgsProcessingBooleanWidgetWrapper::
 }
 
 
+//
+// QgsProcessingCrsWidgetWrapper
+//
+
+QgsProcessingCrsWidgetWrapper::QgsProcessingCrsWidgetWrapper( const QgsProcessingParameterDefinition *parameter, QgsProcessingGui::WidgetType type, QWidget *parent )
+  : QgsAbstractProcessingParameterWidgetWrapper( parameter, type, parent )
+{
+
+}
+
+QWidget *QgsProcessingCrsWidgetWrapper::createWidget()
+{
+  mProjectionSelectionWidget = new QgsProjectionSelectionWidget();
+  mProjectionSelectionWidget->setToolTip( parameterDefinition()->toolTip() );
+
+  if ( parameterDefinition()->flags() & QgsProcessingParameterDefinition::FlagOptional )
+    mProjectionSelectionWidget->setOptionVisible( QgsProjectionSelectionWidget::CrsNotSet, true );
+  else
+    mProjectionSelectionWidget->setOptionVisible( QgsProjectionSelectionWidget::CrsNotSet, false );
+
+  connect( mProjectionSelectionWidget, &QgsProjectionSelectionWidget::crsChanged, this, [ = ]
+  {
+    emit widgetValueHasChanged( this );
+  } );
+
+  switch ( type() )
+  {
+    case QgsProcessingGui::Standard:
+    case QgsProcessingGui::Batch:
+    {
+      return mProjectionSelectionWidget;
+    };
+
+    case QgsProcessingGui::Modeler:
+    {
+      QWidget *w = new QWidget();
+      w->setToolTip( parameterDefinition()->toolTip() );
+
+      QVBoxLayout *vl = new QVBoxLayout();
+      vl->setMargin( 0 );
+      vl->setContentsMargins( 0, 0, 0, 0 );
+      w->setLayout( vl );
+
+      mUseProjectCrsCheckBox = new QCheckBox( tr( "Use project CRS" ) );
+      mUseProjectCrsCheckBox->setToolTip( tr( "Always use the current project CRS when running the model" ) );
+      vl->addWidget( mUseProjectCrsCheckBox );
+      connect( mUseProjectCrsCheckBox, &QCheckBox::toggled, mProjectionSelectionWidget, &QgsProjectionSelectionWidget::setDisabled );
+
+      vl->addWidget( mProjectionSelectionWidget );
+
+      return w;
+    }
+  }
+  return nullptr;
+}
+
+void QgsProcessingCrsWidgetWrapper::setWidgetValue( const QVariant &value, QgsProcessingContext &context )
+{
+  if ( mUseProjectCrsCheckBox )
+  {
+    if ( value.toString().compare( QLatin1String( "ProjectCrs" ), Qt::CaseInsensitive ) == 0 )
+    {
+      mUseProjectCrsCheckBox->setChecked( true );
+      return;
+    }
+    else
+    {
+      mUseProjectCrsCheckBox->setChecked( false );
+    }
+  }
+
+  const QgsCoordinateReferenceSystem v = QgsProcessingParameters::parameterAsCrs( parameterDefinition(), value, context );
+  if ( mProjectionSelectionWidget )
+    mProjectionSelectionWidget->setCrs( v );
+}
+
+QVariant QgsProcessingCrsWidgetWrapper::widgetValue() const
+{
+  if ( mUseProjectCrsCheckBox && mUseProjectCrsCheckBox->isChecked() )
+    return QStringLiteral( "ProjectCrs" );
+  else if ( mProjectionSelectionWidget )
+    return mProjectionSelectionWidget->crs().isValid() ? mProjectionSelectionWidget->crs() : QVariant();
+  else
+    return QVariant();
+}
+
+QStringList QgsProcessingCrsWidgetWrapper::compatibleParameterTypes() const
+{
+  return QStringList()
+         << QgsProcessingParameterCrs::typeName()
+         << QgsProcessingParameterExpression::typeName()
+         << QgsProcessingParameterString::typeName()
+         << QgsProcessingParameterRasterLayer::typeName()
+         << QgsProcessingParameterVectorLayer::typeName()
+         << QgsProcessingParameterFeatureSource::typeName();
+}
+
+QStringList QgsProcessingCrsWidgetWrapper::compatibleOutputTypes() const
+{
+  return QStringList() << QgsProcessingOutputVectorLayer::typeName()
+         << QgsProcessingOutputRasterLayer::typeName()
+         << QgsProcessingOutputMapLayer::typeName()
+         << QgsProcessingOutputString::typeName();
+}
+
+QList<int> QgsProcessingCrsWidgetWrapper::compatibleDataTypes() const
+{
+  return QList< int >();
+}
+
+QString QgsProcessingCrsWidgetWrapper::parameterType() const
+{
+  return QgsProcessingParameterCrs::typeName();
+}
+
+QgsAbstractProcessingParameterWidgetWrapper *QgsProcessingCrsWidgetWrapper::createWidgetWrapper( const QgsProcessingParameterDefinition *parameter, QgsProcessingGui::WidgetType type )
+{
+  return new QgsProcessingCrsWidgetWrapper( parameter, type );
+}
+
+
 
 //
 // QgsProcessingStringWidgetWrapper
@@ -219,7 +341,7 @@ QWidget *QgsProcessingStringWidgetWrapper::createWidget()
   return nullptr;
 }
 
-void QgsProcessingStringWidgetWrapper::setWidgetValue( const QVariant &value, const QgsProcessingContext &context )
+void QgsProcessingStringWidgetWrapper::setWidgetValue( const QVariant &value, QgsProcessingContext &context )
 {
   const QString v = QgsProcessingParameters::parameterAsString( parameterDefinition(), value, context );
   if ( mLineEdit )

src/gui/processing/qgsprocessingwidgetwrapperimpl.h

@@ -26,7 +26,7 @@ class QCheckBox;
 class QComboBox;
 class QLineEdit;
 class QPlainTextEdit;
-
+class QgsProjectionSelectionWidget;
 
 ///@cond PRIVATE
 
@@ -49,7 +49,7 @@ class GUI_EXPORT QgsProcessingBooleanWidgetWrapper : public QgsAbstractProcessin
 
   protected:
 
-    void setWidgetValue( const QVariant &value, const QgsProcessingContext &context ) override;
+    void setWidgetValue( const QVariant &value, QgsProcessingContext &context ) override;
     QVariant widgetValue() const override;
 
     QStringList compatibleParameterTypes() const override;
@@ -66,6 +66,40 @@ class GUI_EXPORT QgsProcessingBooleanWidgetWrapper : public QgsAbstractProcessin
     friend class TestProcessingGui;
 };
 
+class GUI_EXPORT QgsProcessingCrsWidgetWrapper : public QgsAbstractProcessingParameterWidgetWrapper, public QgsProcessingParameterWidgetFactoryInterface
+{
+    Q_OBJECT
+
+  public:
+
+    QgsProcessingCrsWidgetWrapper( const QgsProcessingParameterDefinition *parameter = nullptr,
+                                   QgsProcessingGui::WidgetType type = QgsProcessingGui::Standard, QWidget *parent = nullptr );
+
+    // QgsProcessingParameterWidgetFactoryInterface
+    QString parameterType() const override;
+    QgsAbstractProcessingParameterWidgetWrapper *createWidgetWrapper( const QgsProcessingParameterDefinition *parameter, QgsProcessingGui::WidgetType type ) override;
+
+    // QgsProcessingParameterWidgetWrapper interface
+    QWidget *createWidget() override SIP_FACTORY;
+
+  protected:
+
+    void setWidgetValue( const QVariant &value, QgsProcessingContext &context ) override;
+    QVariant widgetValue() const override;
+
+    QStringList compatibleParameterTypes() const override;
+
+    QStringList compatibleOutputTypes() const override;
+
+    QList< int > compatibleDataTypes() const override;
+
+  private:
+
+    QgsProjectionSelectionWidget *mProjectionSelectionWidget = nullptr;
+    QCheckBox *mUseProjectCrsCheckBox = nullptr;
+
+    friend class TestProcessingGui;
+};
 
 class GUI_EXPORT QgsProcessingStringWidgetWrapper : public QgsAbstractProcessingParameterWidgetWrapper, public QgsProcessingParameterWidgetFactoryInterface
 {
@@ -85,7 +119,7 @@ class GUI_EXPORT QgsProcessingStringWidgetWrapper : public QgsAbstractProcessing
 
   protected:
 
-    void setWidgetValue( const QVariant &value, const QgsProcessingContext &context ) override;
+    void setWidgetValue( const QVariant &value, QgsProcessingContext &context ) override;
     QVariant widgetValue() const override;
 
     QStringList compatibleParameterTypes() const override;

tests/src/gui/testprocessinggui.cpp

@@ -79,7 +79,7 @@ class TestWidgetWrapper : public QgsAbstractProcessingParameterWidgetWrapper
       return nullptr;
     }
 
-    void setWidgetValue( const QVariant &, const QgsProcessingContext & ) override
+    void setWidgetValue( const QVariant &, QgsProcessingContext & ) override
     {
     }