TechDraw: Implement smart dimension tool.

src/Mod/TechDraw/Gui/TechDrawHandler.h

@@ -0,0 +1,66 @@
+/***************************************************************************
+ *   Copyright (c) 2024 Pierre-Louis Boyer <development@ondsel.com>        *
+ *                                                                         *
+ *   This file is part of the FreeCAD CAx development system.              *
+ *                                                                         *
+ *   This library is free software; you can redistribute it and/or         *
+ *   modify it under the terms of the GNU Library General Public           *
+ *   License as published by the Free Software Foundation; either          *
+ *   version 2 of the License, or (at your option) any later version.      *
+ *                                                                         *
+ *   This library  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 Library General Public License for more details.                  *
+ *                                                                         *
+ *   You should have received a copy of the GNU Library General Public     *
+ *   License along with this library; see the file COPYING.LIB. If not,    *
+ *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
+ *   Suite 330, Boston, MA  02111-1307, USA                                *
+ *                                                                         *
+ ***************************************************************************/
+
+#ifndef TechDrawGUI_TechDrawHandler_H
+#define TechDrawGUI_TechDrawHandler_H
+
+#include <Gui/ToolHandler.h>
+
+#include <Mod/TechDraw/TechDrawGlobal.h>
+
+namespace TechDrawGui
+{
+class QGVPage;
+
+class TechDrawGuiExport TechDrawHandler : public Gui::ToolHandler
+{
+public:
+
+    TechDrawHandler();
+    virtual ~TechDrawHandler();
+
+    void activate(QGVPage* vPage);
+
+    void quit() override;
+
+    virtual void mouseMoveEvent(QMouseEvent* event) = 0;
+    virtual bool mousePressEvent(QMouseEvent* event);
+    virtual bool mouseReleaseEvent(QMouseEvent* event) = 0;
+
+    virtual void keyPressEvent(QKeyEvent* event) = 0;
+    virtual void keyReleaseEvent(QKeyEvent* event);
+
+    TechDraw::DrawPage* getPage();
+
+
+protected:
+    QWidget* getCursorWidget() override;
+    void setWidgetCursor(QCursor cursor) override;
+
+    QGVPage* viewPage;
+};
+
+
+}  // namespace TechDrawGui
+
+
+#endif  // TechDrawGUI_TechDrawHandler_H