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lib/engine/rs_leader.h

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+/****************************************************************************
+**
+** This file is part of the LibreCAD project, a 2D CAD program
+**
+** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl)
+** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
+**
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software
+** Foundation and appearing in the file gpl-2.0.txt included in the
+** packaging of this file.
+**
+** This program 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 this program; if not, write to the Free Software
+** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+**
+** This copyright notice MUST APPEAR in all copies of the script!
+**
+**********************************************************************/
+
+
+#ifndef RS_LEADER_H
+#define RS_LEADER_H
+
+#include "rs_entity.h"
+#include "rs_entitycontainer.h"
+
+
+
+/**
+ * Holds the data that defines a leader.
+ */
+class RS_LeaderData {
+public:
+	RS_LeaderData() = default;
+	RS_LeaderData(bool arrowHeadFlag) {
+		arrowHead = arrowHeadFlag;
+	}
+
+	friend std::ostream& operator << (std::ostream& os,
+									  const RS_LeaderData& /*ld*/);
+
+	/** true: leader has an arrow head. false: no arrow. */
+	bool arrowHead;
+};
+
+
+
+/**
+ * Class for a leader entity (kind of a polyline arrow).
+ *
+ * @author Andrew Mustun
+ */
+class RS_Leader : public RS_EntityContainer {
+public:
+	RS_Leader(RS_EntityContainer* parent=NULL);
+	RS_Leader(RS_EntityContainer* parent,
+			  const RS_LeaderData& d);
+
+	RS_Entity* clone() const override;
+
+	/**	@return RS2::EntityDimLeader */
+	RS2::EntityType rtti() const override{
+		return RS2::EntityDimLeader;
+	}
+
+	void update() override;
+
+	/** @return Copy of data that defines the leader. */
+	RS_LeaderData getData() const {
+		return data;
+	}
+
+	/** @return true: if this leader has an arrow at the beginning. */
+	bool hasArrowHead() {
+		return data.arrowHead;
+	}
+
+	RS_Entity* addVertex(const RS_Vector& v);
+	void addEntity(RS_Entity* entity) override;
+
+	//	double getLength() const {
+	//		return -1.0;
+	//	}
+
+
+	void move(const RS_Vector& offset) override;
+	void rotate(const RS_Vector& center, const double& angle) override;
+	void rotate(const RS_Vector& center, const RS_Vector& angleVector) override;
+	void scale(const RS_Vector& center, const RS_Vector& factor) override;
+	void mirror(const RS_Vector& axisPoint1, const RS_Vector& axisPoint2) override;
+	void stretch(const RS_Vector& firstCorner,
+				 const RS_Vector& secondCorner,
+				 const RS_Vector& offset) override;
+
+	friend std::ostream& operator << (std::ostream& os, const RS_Leader& l);
+
+protected:
+	RS_LeaderData data;
+	bool empty;
+};
+
+#endif