Ref T30, font menu class

* font dialog
* shortcuts CTRL+/- to increase/decrease font size

src/blackgui/menus/fontmenus.h

@@ -0,0 +1,63 @@
+/* Copyright (C) 2017
+ * swift project Community / Contributors
+ *
+ * This file is part of swift Project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+#ifndef BLACKGUI_MENUS_FONTMENUS_H
+#define BLACKGUI_MENUS_FONTMENUS_H
+
+#include "blackgui/components/settingsfontdialog.h"
+#include "blackgui/menus/menudelegate.h"
+#include "blackgui/views/aircraftmodelview.h"
+#include "blackgui/overlaymessagesframe.h"
+#include "blackmisc/simulation/aircraftmodelinterfaces.h"
+
+#include <QObject>
+
+class QAction;
+class QShortcut;
+
+namespace BlackGui
+{
+    namespace Menus
+    {
+        //! Standard font (size, style) menus for fonts.
+        //! Can be used as nested menu or via getActions added manually
+        class CFontMenu : public IMenuDelegate
+        {
+            Q_OBJECT
+
+        public:
+            //! Constructor
+            CFontMenu(QWidget *widget, bool separator = true);
+
+            //! Log.categories
+            static const BlackMisc::CLogCategoryList &getLogCategories();
+
+            //! \copydoc IMenuDelegate::customMenu
+            virtual void customMenu(CMenuActions &menuActions) override;
+
+            //! Allow to use the actions directly
+            QList<QAction *> getActions() const;
+
+        private:
+            void changeFontDialog();
+            void fontSizePlus();
+            void fontSizeMinus();
+            void fontReset();
+
+            QWidget *m_widget = nullptr;
+            QShortcut *m_fontSizePlusShortcut = nullptr;  //! owned by widget
+            QShortcut *m_fontSizeMinusShortcut = nullptr; //! owned by widget
+            QShortcut *m_fontResetShortcut = nullptr;     //! owned by widget
+            QScopedPointer<QAction> m_fontDialogAction;
+            QScopedPointer<BlackGui::Components::CSettingsFontDialog> m_dialog;
+        };
+    } // ns
+} // ns
+
+#endif // guard