78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
/****************************************************************************
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**
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** This file is part of the LibreCAD project, a 2D CAD program
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**
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** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl)
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** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
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**
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 as published by the Free Software
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** Foundation and appearing in the file gpl-2.0.txt included in the
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** packaging of this file.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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**
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** This copyright notice MUST APPEAR in all copies of the script!
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**
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**********************************************************************/
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#ifndef RS_ACTIONDRAWLINETANGENT1_H
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#define RS_ACTIONDRAWLINETANGENT1_H
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#include "rs_previewactioninterface.h"
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class RS_Line;
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/**
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* This action class can handle user events to draw tangents from points
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* to circles.
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*
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* @author Andrew Mustun
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*/
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class RS_ActionDrawLineTangent1 : public RS_PreviewActionInterface {
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Q_OBJECT
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private:
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enum Status {
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SetPoint, /**< Choose the startpoint. */
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SetCircle /**< Choose the circle / arc. */
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};
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public:
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RS_ActionDrawLineTangent1(RS_EntityContainer& container,
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RS_GraphicView& graphicView);
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~RS_ActionDrawLineTangent1() override;
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void trigger() override;
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void mouseMoveEvent(QMouseEvent* e) override;
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void mouseReleaseEvent(QMouseEvent* e) override;
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void coordinateEvent(RS_CoordinateEvent* e) override;
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void updateMouseButtonHints() override;
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void updateMouseCursor() override;
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private:
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/** Closest tangent. */
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std::unique_ptr<RS_Line> tangent;
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/** Chosen startpoint */
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std::unique_ptr<RS_Vector> point;
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/** Chosen entity */
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RS_Entity* circle;
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//list of entity types supported by current action
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const EntityTypeList circleType = EntityTypeList{ RS2::EntityArc,
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RS2::EntityCircle,
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RS2::EntityEllipse,
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RS2::EntitySplinePoints };
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};
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#endif
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