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Chenwenxuan
400
actions/lc_actiondrawsplinepoints.cpp
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400
actions/lc_actiondrawsplinepoints.cpp
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/****************************************************************************
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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) 2014 Dongxu Li (dongxuli2011@gmail.com)
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** Copyright (C) 2014 Pavel Krejcir (pavel@pamsoft.cz)
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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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#include <QAction>
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#include <QMouseEvent>
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#include "lc_actiondrawsplinepoints.h"
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#include "lc_splinepoints.h"
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#include "rs_dialogfactory.h"
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#include "rs_graphicview.h"
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#include "rs_commands.h"
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#include "rs_commandevent.h"
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#include "rs_point.h"
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#include "rs_coordinateevent.h"
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#include "rs_preview.h"
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#include "rs_debug.h"
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struct LC_ActionDrawSplinePoints::Points {
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/**
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* Spline data defined so far.
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*/
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LC_SplinePointsData data;
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/**
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* Spline used.
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*/
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std::unique_ptr<LC_SplinePoints> spline;
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/**
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* Point history (for undo)
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*/
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std::vector<RS_Vector> undoBuffer;
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};
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LC_ActionDrawSplinePoints::LC_ActionDrawSplinePoints(RS_EntityContainer& container,
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RS_GraphicView& graphicView):
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RS_ActionDrawSpline( container, graphicView)
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, pPoints(new Points{})
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{
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actionType=RS2::ActionDrawSplinePoints;
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setName("DrawSplinePoints");
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}
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LC_ActionDrawSplinePoints::~LC_ActionDrawSplinePoints() = default;
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void LC_ActionDrawSplinePoints::reset() {
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pPoints->spline.reset();
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pPoints->undoBuffer.clear();
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}
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void LC_ActionDrawSplinePoints::init(int status)
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{
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RS_PreviewActionInterface::init(status);
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reset();
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}
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void LC_ActionDrawSplinePoints::trigger()
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{
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if(!pPoints->spline.get()) return;
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pPoints->spline->setLayerToActive();
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pPoints->spline->setPenToActive();
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pPoints->spline->update();
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RS_Entity* s=pPoints->spline->clone();
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container->addEntity(s);
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// upd. undo list:
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if (document)
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{
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document->startUndoCycle();
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document->addUndoable(s);
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document->endUndoCycle();
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}
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// upd view
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RS_Vector r = graphicView->getRelativeZero();
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graphicView->redraw(RS2::RedrawDrawing);
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graphicView->moveRelativeZero(r);
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RS_DEBUG->print("RS_ActionDrawSplinePoints::trigger(): spline added: %d",
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s->getId());
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reset();
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}
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void LC_ActionDrawSplinePoints::mouseMoveEvent(QMouseEvent* e)
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{
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RS_DEBUG->print("RS_ActionDrawSplinePoints::mouseMoveEvent begin");
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RS_Vector mouse = snapPoint(e);
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if(getStatus() == SetNextPoint)
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{
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LC_SplinePoints* sp = static_cast<LC_SplinePoints*>(pPoints->spline->clone());
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sp->addPoint(mouse);
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deletePreview();
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preview->addEntity(sp);
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for(auto const& v: sp->getPoints())
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{
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preview->addEntity(new RS_Point(preview.get(), RS_PointData(v)));
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}
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drawPreview();
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}
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RS_DEBUG->print("RS_ActionDrawSplinePoints::mouseMoveEvent end");
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}
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void LC_ActionDrawSplinePoints::mouseReleaseEvent(QMouseEvent* e)
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{
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if(e->button() == Qt::LeftButton)
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{
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RS_CoordinateEvent ce(snapPoint(e));
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coordinateEvent(&ce);
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}
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else if(e->button() == Qt::RightButton)
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{
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if(getStatus() == SetNextPoint && pPoints->spline.get())
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{
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trigger();
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}
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init(getStatus() - 1);
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}
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}
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void LC_ActionDrawSplinePoints::coordinateEvent(RS_CoordinateEvent* e)
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{
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if(e == nullptr) return;
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RS_Vector mouse = e->getCoordinate();
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switch (getStatus())
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{
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case SetStartPoint:
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pPoints->undoBuffer.clear();
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if(!pPoints->spline.get())
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{
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pPoints->spline.reset(new LC_SplinePoints(container, pPoints->data));
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pPoints->spline->addPoint(mouse);
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preview->addEntity(new RS_Point(preview.get(), RS_PointData(mouse)));
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}
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setStatus(SetNextPoint);
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graphicView->moveRelativeZero(mouse);
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updateMouseButtonHints();
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break;
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case SetNextPoint:
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graphicView->moveRelativeZero(mouse);
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if(pPoints->spline.get())
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{
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pPoints->spline->addPoint(mouse);
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drawPreview();
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drawSnapper();
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}
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updateMouseButtonHints();
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break;
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default:
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break;
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}
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}
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void LC_ActionDrawSplinePoints::commandEvent(RS_CommandEvent* e)
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{
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QString c = e->getCommand().toLower();
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switch (getStatus())
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{
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case SetStartPoint:
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if(checkCommand("help", c))
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{
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RS_DIALOGFACTORY->commandMessage(msgAvailableCommands()
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+ getAvailableCommands().join(", "));
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return;
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}
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break;
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case SetNextPoint:
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if (checkCommand("undo", c))
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{
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undo();
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updateMouseButtonHints();
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return;
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}
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if (checkCommand("redo", c))
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{
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redo();
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updateMouseButtonHints();
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return;
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}
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break;
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default:
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break;
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}
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}
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QStringList LC_ActionDrawSplinePoints::getAvailableCommands()
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{
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QStringList cmd;
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switch (getStatus())
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{
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case SetStartPoint:
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break;
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case SetNextPoint:
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if(pPoints->data.splinePoints.size() > 0)
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{
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cmd += command("undo");
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}
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if(pPoints->undoBuffer.size() > 0)
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{
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cmd += command("redo");
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}
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if(pPoints->data.splinePoints.size() > 2)
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{
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cmd += command("close");
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}
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break;
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default:
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break;
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}
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return cmd;
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}
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void LC_ActionDrawSplinePoints::updateMouseButtonHints()
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{
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switch (getStatus())
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{
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case SetStartPoint:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Specify first control point"),
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tr("Cancel"));
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break;
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case SetNextPoint:
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{
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QString msg = "";
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if(pPoints->data.splinePoints.size() > 2)
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{
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msg += RS_COMMANDS->command("close");
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msg += "/";
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}
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if(pPoints->data.splinePoints.size() > 0)
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{
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msg += RS_COMMANDS->command("undo");
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}
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if(pPoints->undoBuffer.size() > 0)
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{
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msg += RS_COMMANDS->command("redo");
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}
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if(pPoints->data.splinePoints.size() > 0)
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{
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RS_DIALOGFACTORY->updateMouseWidget(
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tr("Specify next control point or [%1]").arg(msg),
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tr("Back"));
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}
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else
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{
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RS_DIALOGFACTORY->updateMouseWidget(
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tr("Specify next control point"),
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tr("Back"));
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}
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}
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break;
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default:
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RS_DIALOGFACTORY->updateMouseWidget();
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break;
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}
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}
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void LC_ActionDrawSplinePoints::showOptions()
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{
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RS_ActionInterface::showOptions();
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RS_DIALOGFACTORY->requestOptions(this, true);
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}
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void LC_ActionDrawSplinePoints::hideOptions()
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{
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RS_ActionInterface::hideOptions();
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RS_DIALOGFACTORY->requestOptions(this, false);
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}
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void LC_ActionDrawSplinePoints::updateMouseCursor()
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{
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graphicView->setMouseCursor(RS2::CadCursor);
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}
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/*
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void RS_ActionDrawSplinePoints::close() {
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if (history.size()>2 && start.valid) {
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//data.endpoint = start;
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//trigger();
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if (spline) {
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RS_CoordinateEvent e(spline->getStartpoint());
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coordinateEvent(&e);
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}
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trigger();
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setStatus(SetStartpoint);
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graphicView->moveRelativeZero(start);
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} else {
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RS_DIALOGFACTORY->commandMessage(
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tr("Cannot close sequence of lines: "
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"Not enough entities defined yet."));
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}
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}
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*/
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void LC_ActionDrawSplinePoints::undo()
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{
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if(!pPoints->spline.get())
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{
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RS_DIALOGFACTORY->commandMessage(
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tr("Cannot undo: Not enough entities defined yet."));
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return;
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}
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auto& splinePts = pPoints->spline->getData().splinePoints;
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size_t nPoints = splinePts.size();
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if(nPoints > 1)
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{
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RS_Vector v = splinePts.back();
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pPoints->undoBuffer.push_back(v);
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pPoints->spline->removeLastPoint();
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if(!splinePts.size()) setStatus(SetStartPoint);
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else
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{
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v = splinePts.back();
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graphicView->moveRelativeZero(v);
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}
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graphicView->redraw(RS2::RedrawDrawing);
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drawPreview();
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}
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else
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{
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RS_DIALOGFACTORY->commandMessage(
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tr("Cannot undo: Not enough entities defined yet."));
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}
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}
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void LC_ActionDrawSplinePoints::redo()
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{
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int iBufLen = pPoints->undoBuffer.size();
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if(iBufLen > 1)
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{
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RS_Vector v = pPoints->undoBuffer.back();
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pPoints->spline->addPoint(v);
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pPoints->undoBuffer.pop_back();
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setStatus(SetNextPoint);
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v = pPoints->data.splinePoints.back();
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graphicView->moveRelativeZero(v);
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graphicView->redraw(RS2::RedrawDrawing);
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}
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else
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{
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RS_DIALOGFACTORY->commandMessage(
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tr("Cannot undo: Nothing could be redone."));
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}
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}
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void LC_ActionDrawSplinePoints::setClosed(bool c)
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{
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pPoints->data.closed = c;
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if(pPoints->spline.get())
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{
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pPoints->spline->setClosed(c);
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}
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}
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bool LC_ActionDrawSplinePoints::isClosed()
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{
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return pPoints->data.closed;
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return false;
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}
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// EOF
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