refs #347, CMainWindow for frameless main windows

src/blackgui/enableforframelesswindow.h

@@ -0,0 +1,85 @@
+/* Copyright (C) 2014
+ * 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.
+ */
+
+//! \file
+
+#ifndef BLACKGUI_ENABLEFORFRAMLESSWINDOW_H
+#define BLACKGUI_ENABLEFORFRAMLESSWINDOW_H
+
+#include <QWidget>
+#include <QStatusBar>
+#include <QMouseEvent>
+#include <QPushButton>
+#include <QHBoxLayout>
+#include <QMenuBar>
+
+namespace BlackGui
+{
+
+    //! Main window which can be frameless
+    //! \details QMainWindows cannot be promoted. Hence a derived class does not work properly here.
+    //!          Furthermore frameless functionality is also required for CDockWidgets as well.
+    class CEnableForFramelessWindow
+    {
+    public:
+        //! Window modes
+        enum WindowMode
+        {
+            WindowFrameless,
+            WindowNormal
+        };
+
+        //! Constructor
+        CEnableForFramelessWindow(WindowMode mode, bool isMainApplicationWindow, QWidget *correspondingWidget);
+
+        //! Window mode
+        void setMode(WindowMode mode);
+
+        //! Framless
+        void setFrameless(bool frameless);
+
+        //! Frameless?
+        bool isFrameless() const { return this->m_windowMode == WindowFrameless; }
+
+        //! The main application
+        bool isMainApplicationWindow() const { return m_mainApplicationWindow; }
+
+        //! Corresponding QMainWindow
+        QWidget *getWidget() const { return m_widget; }
+
+    protected:
+        //! Resize grip handle
+        void addFramelessSizeGrip(QStatusBar *statusBar);
+
+        //! Attributes
+        void setWindowAttributes(WindowMode mode);
+
+        //! Close button for frameless windows
+        QHBoxLayout *addFramelessCloseButton(QMenuBar *menuBar);
+
+        //! Translate mode
+        static Qt::WindowFlags modeToWindowFlags(WindowMode mode);
+
+        QPoint       m_framelessDragPosition;          //!< position, if moving is handled with frameless window */
+        QPushButton *m_framelessCloseButton = nullptr; //!< close button
+        WindowMode   m_windowMode = WindowNormal;      //!< Window mode, \sa WindowMode
+        bool         m_mainApplicationWindow = false;  //!< is the main application window (only 1)
+        QWidget     *m_widget = nullptr;               //!< corresponding main window or dock widget
+
+        //! Mouse press, required for frameless window
+        bool handleMousePressEvent(QMouseEvent *event);
+
+        //! Mouse moving, required for frameless window
+        bool handleMouseMoveEvent(QMouseEvent *event);
+
+    };
+
+} // namespace
+
+#endif // guard