a whole lotta work!!

- refactoring
- completely changed the tooling (adding elements)
- better re-use for more stable editing
- new elements
- ui adjustments
- LINT for stair-editing
- many more changes

mapview/2D/tools/Tool.h

@@ -0,0 +1,58 @@
+#ifndef TOOL_H
+#define TOOL_H
+
+#include <QKeyEvent>
+#include <QMouseEvent>
+#include <QObject>
+
+#include "../Painter.h"
+
+class MapView2D;
+
+/**
+ * interface for every MapView tool.
+ * a tool may be a background tool (e.g. a ruler-display, grid, ..)
+ * or a foreground (active) one, which e.g. selects nodes, creates a new element, ...
+ */
+class Tool : public QObject {
+
+	Q_OBJECT
+
+public:
+
+	Tool() {;}
+
+	virtual ~Tool() {;}
+
+	/** the tool must return its name here */
+	virtual const std::string getName() const = 0;
+
+	/** the tool was activated (by user or by code) */
+	virtual void becomesActive() {;}
+
+	/** the tool was deactivated (by user or by code) */
+	virtual void becomesInactive() {;}
+
+
+	/** events: return TRUE when you consumed the event */
+
+	virtual bool mousePressEvent(MapView2D* m, QMouseEvent* e) { (void) m; (void) e; return false; }
+	virtual bool mouseMoveEvent(MapView2D* m, QMouseEvent* e) { (void) m; (void) e; return false; }
+	virtual bool mouseReleaseEvent(MapView2D* m, QMouseEvent* e) { (void) m; (void) e; return false; }
+
+	virtual bool wheelEvent(MapView2D* m, QWheelEvent* e) { (void) m; (void) e; return false; }
+
+	virtual bool keyPressEvent(MapView2D* m, QKeyEvent* e) { (void) m; (void) e; return false; }
+
+	virtual void paintBefore(MapView2D* m, Painter& p) { (void) m; (void) p; }
+	virtual void paintAfter(MapView2D* m, Painter& p) { (void) m; (void) p; }
+
+	virtual void layerChange(MapView2D* m) { (void) m; }
+
+signals:
+
+	void onHelpTextChange(QString str);
+
+};
+
+#endif // TOOL_H