[FEATURE] QML chart and drawings widget

python/core/auto_generated/qgsattributeeditorelement.sip.in

@@ -47,7 +47,8 @@ layer.
       AeTypeContainer,
       AeTypeField,
       AeTypeRelation,
-      AeTypeInvalid
+      AeTypeInvalid,
+      AeTypeQmlElement
     };
 
     QgsAttributeEditorElement( AttributeEditorType type, const QString &name, QgsAttributeEditorElement *parent = 0 );
@@ -345,6 +346,38 @@ Determines if the "unlink feature" button should be shown
 
 };
 
+class QgsAttributeEditorQmlElement : QgsAttributeEditorElement
+{
+%Docstring
+An attribute editor widget that will represent arbitrary QML code.
+
+.. versionadded:: 3.4
+%End
+
+%TypeHeaderCode
+#include "qgsattributeeditorelement.h"
+%End
+  public:
+    QgsAttributeEditorQmlElement( const QString &name, QgsAttributeEditorElement *parent );
+
+    virtual QgsAttributeEditorElement *clone( QgsAttributeEditorElement *parent ) const /Factory/;
+
+
+    QString qmlCode() const;
+%Docstring
+The QML code that will be represented within this widget.
+
+.. versionadded:: 3.4
+%End
+
+    void setQmlCode( const QString &qmlCode );
+%Docstring
+The QML code that will be represented within this widget.
+
+@param qmlCode
+%End
+
+};
 
 /************************************************************************
  * This file has been generated automatically from                      *

python/gui/auto_generated/editorwidgets/core/qgswidgetwrapper.sip.in

@@ -14,6 +14,7 @@
 // so RTTI for casting is available in the whole module.
 %ModuleCode
 #include "qgsrelationwidgetwrapper.h"
+#include "qgsqmlwidgetwrapper.h"
 %End
 
 class QgsWidgetWrapper : QObject
@@ -37,6 +38,8 @@ changed status of the widget will be saved.
       sipType = sipType_QgsEditorWidgetWrapper;
     else if ( qobject_cast<QgsRelationWidgetWrapper *>( sipCpp ) )
       sipType = sipType_QgsRelationWidgetWrapper;
+    else if ( qobject_cast<QgsQmlWidgetWrapper *>( sipCpp ) )
+      sipType = sipType_QgsQmlWidgetWrapper;
     else
       sipType = 0;
 %End

python/gui/auto_generated/editorwidgets/qgsqmlwidgetwrapper.sip.in

@@ -0,0 +1,89 @@
+/************************************************************************
+ * This file has been generated automatically from                      *
+ *                                                                      *
+ * src/gui/editorwidgets/qgsqmlwidgetwrapper.h                          *
+ *                                                                      *
+ * Do not edit manually ! Edit header and run scripts/sipify.pl again   *
+ ************************************************************************/
+
+
+class QgsQmlWidgetWrapper : QgsWidgetWrapper
+{
+%Docstring
+*************************************************************************
+qgsqmlwidgetwrapper.h
+
+---------------------
+begin                : 25.6.2018
+copyright            : (C) 2018 by Matthias Kuhn
+email                : matthias@opengis.ch
+**************************************************************************
+
+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.                                   *
+
+**************************************************************************
+%End
+
+%TypeHeaderCode
+#include "qgsqmlwidgetwrapper.h"
+%End
+  public:
+
+    QgsQmlWidgetWrapper( QgsVectorLayer *layer, QWidget *editor, QWidget *parent );
+
+    virtual bool valid() const;
+
+
+    virtual QWidget *createWidget( QWidget *parent );
+
+
+    virtual void initWidget( QWidget *editor );
+
+
+    void reinitWidget();
+%Docstring
+Clears the content and makes new intialisaton
+%End
+
+    void setQmlCode( const QString &qmlCode );
+%Docstring
+writes the ``qmlCode`` into a temporary file
+%End
+
+  public slots:
+
+    virtual void setFeature( const QgsFeature &feature );
+
+%Docstring
+passes the ``feature`` into the context property of the widget
+%End
+
+};
+
+
+class QmlExpression : QObject
+{
+
+%TypeHeaderCode
+#include "qgsqmlwidgetwrapper.h"
+%End
+  public:
+    void setExpressionContext( const QgsExpressionContext &context );
+
+    QVariant evaluate( const QString &expression ) const;
+%Docstring
+evaluates the value regarding the /a expression and the context
+%End
+
+};
+
+/************************************************************************
+ * This file has been generated automatically from                      *
+ *                                                                      *
+ * src/gui/editorwidgets/qgsqmlwidgetwrapper.h                          *
+ *                                                                      *
+ * Do not edit manually ! Edit header and run scripts/sipify.pl again   *
+ ************************************************************************/

python/gui/auto_generated/qgsqmlwidget.sip.in

@@ -0,0 +1,43 @@
+/************************************************************************
+ * This file has been generated automatically from                      *
+ *                                                                      *
+ * src/gui/qgsqmlwidget.h                                               *
+ *                                                                      *
+ * Do not edit manually ! Edit header and run scripts/sipify.pl again   *
+ ************************************************************************/
+
+
+class QgsQmlWidget
+{
+%Docstring
+*************************************************************************
+qgsqmlwidget.h
+
+---------------------
+begin                : 25.6.2018
+copyright            : (C) 2018 by Matthias Kuhn
+email                : matthias@opengis.ch
+**************************************************************************
+
+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.                                   *
+
+**************************************************************************
+%End
+
+%TypeHeaderCode
+#include "qgsqmlwidget.h"
+%End
+  public:
+    QgsQmlWidget();
+};
+
+/************************************************************************
+ * This file has been generated automatically from                      *
+ *                                                                      *
+ * src/gui/qgsqmlwidget.h                                               *
+ *                                                                      *
+ * Do not edit manually ! Edit header and run scripts/sipify.pl again   *
+ ************************************************************************/

python/gui/gui_auto.sip

@@ -322,4 +322,5 @@
 %Include auto_generated/processing/qgsprocessingtoolboxmodel.sip
 %Include auto_generated/processing/qgsprocessingtoolboxtreeview.sip
 %Include auto_generated/processing/qgsprocessingwidgetwrapper.sip
+%Include auto_generated/editorwidgets/qgsqmlwidgetwrapper.sip
 %Include auto_generated/qgsadvanceddigitizingcanvasitem.sip