Big-Ugly Style Update (#278)

* Bulk replaced tabs with spaces
* Bulk removed trailing whitespace from lines
* Replaced c-style comments with c++-style comments in file banners
* Replace nested namespace definitions with single concise definitions (C++17), this keeps the indentation more manageable
* Cleanup ordering and spacing of include directives
* Bulk renaming of header file extensions from '.h' to '.hpp'.
* Update CODING-STYLE.md
* Update target_compile_features from cxx_std_11 to cxx_std_20.
* Refresh .clang-format file.  Still needs a lot of tweaking.

model/XmlLabelCreator.hpp

@@ -0,0 +1,138 @@
+//  XmlLabelCreator.hpp
+//
+//  Copyright (C) 2014  Jaye Evins <evins@snaught.com>
+//
+//  This file is part of gLabels-qt.
+//
+//  gLabels-qt 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 3 of the License, or
+//  (at your option) any later version.
+//
+//  gLabels-qt is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with gLabels-qt.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#ifndef model_XmlLabelCreator_hpp
+#define model_XmlLabelCreator_hpp
+
+
+#include <QObject>
+#include <QDomElement>
+
+
+namespace glabels::model
+{
+
+        // Forward references
+        class Model;
+        class ModelObject;
+        class ModelBoxObject;
+        class ModelEllipseObject;
+        class ModelLineObject;
+        class ModelImageObject;
+        class ModelBarcodeObject;
+        class ModelTextObject;
+        class Variable;
+
+
+        ///
+        /// XmlLabelCreator
+        ///
+        class XmlLabelCreator : public QObject
+        {
+                Q_OBJECT
+
+        public:
+                static void writeFile( Model*         model,
+                                       const QString& fileName );
+
+                static void writeBuffer( const Model* model,
+                                         QByteArray&  buffer );
+
+                static QByteArray serializeObjects( const QList<ModelObject*>& objects,
+                                                    const Model*               model );
+
+        private:
+                static void createDoc( QDomDocument& doc,
+                                       const Model*  model );
+
+                static void createRootNode( const Model* model );
+
+                static void createObjectsNode( QDomElement&               parent,
+                                               const Model*               model,
+                                               const QList<ModelObject*>& objects,
+                                               bool                       rotate );
+
+                static void createObjectBoxNode( QDomElement&          parent,
+                                                 const ModelBoxObject* object );
+
+                static void createObjectEllipseNode( QDomElement&              parent,
+                                                     const ModelEllipseObject* object );
+
+                static void createObjectLineNode( QDomElement&           parent,
+                                                  const ModelLineObject* object );
+
+                static void createObjectImageNode( QDomElement&            parent,
+                                                   const Model*            model,
+                                                   const ModelImageObject* object );
+
+                static void createObjectBarcodeNode( QDomElement&              parent,
+                                                     const ModelBarcodeObject* object );
+
+                static void createObjectTextNode( QDomElement&           parent,
+                                                  const ModelTextObject* object );
+
+                static void createPNode( QDomElement&   parent,
+                                         const QString& blockText );
+
+                static void createPositionAttrs( QDomElement&       node,
+                                                 const ModelObject* object );
+
+                static void createSizeAttrs( QDomElement&       node,
+                                             const ModelObject* object );
+
+                static void createLineAttrs( QDomElement&       node,
+                                             const ModelObject* object );
+
+                static void createFillAttrs( QDomElement&       node,
+                                             const ModelObject* object );
+
+                static void createAffineAttrs( QDomElement&       node,
+                                               const ModelObject* object );
+
+                static void createShadowAttrs( QDomElement&       node,
+                                               const ModelObject* object );
+
+                static void createMergeNode( QDomElement& parent,
+                                             const Model* model );
+
+                static void createVariablesNode( QDomElement& parent,
+                                                 const Model* model );
+
+                static void createVariableNode( QDomElement&    parent,
+                                                const Variable& v );
+
+                static void createDataNode( QDomElement&               parent,
+                                            const Model*               model,
+                                            const QList<ModelObject*>& objects );
+
+                static void createPngFileNode( QDomElement&   parent,
+                                               const QString& name,
+                                               const QImage&  image );
+
+                static void createSvgFileNode( QDomElement&      parent,
+                                               const QString&    name,
+                                               const QByteArray& svg );
+
+        };
+
+}
+
+
+#endif // model_XmlLabelCreator_hpp