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Chenwenxuan
391
actions/rs_actiondrawspline.cpp
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391
actions/rs_actiondrawspline.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) 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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#include <QAction>
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#include <QMouseEvent>
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#include "rs_actiondrawspline.h"
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#include "rs_spline.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 RS_ActionDrawSpline::Points {
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/**
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* Spline data defined so far.
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*/
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RS_SplineData data;
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/**
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* Polyline entity we're working on.
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*/
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RS_Spline* spline{nullptr};
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/**
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* Point history (for undo)
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*/
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QList<RS_Vector> history;
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/**
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* Bulge history (for undo)
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*/
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//QList<double> bHistory;
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};
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RS_ActionDrawSpline::RS_ActionDrawSpline(RS_EntityContainer& container,
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RS_GraphicView& graphicView)
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:RS_PreviewActionInterface("Draw splines",
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container, graphicView)
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,pPoints(new Points{})
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{
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actionType=RS2::ActionDrawSpline;
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reset();
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}
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RS_ActionDrawSpline::~RS_ActionDrawSpline() = default;
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void RS_ActionDrawSpline::reset() {
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pPoints->spline = nullptr;
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pPoints->history.clear();
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}
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void RS_ActionDrawSpline::init(int status) {
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RS_PreviewActionInterface::init(status);
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reset();
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}
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void RS_ActionDrawSpline::trigger() {
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RS_PreviewActionInterface::trigger();
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if (!pPoints->spline) {
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return;
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}
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// add the entity
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//RS_Spline* spline = new RS_Spline(container, data);
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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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container->addEntity(pPoints->spline);
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// upd. undo list:
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if (document) {
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document->startUndoCycle();
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document->addUndoable(pPoints->spline);
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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_ActionDrawSpline::trigger(): spline added: %d",
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pPoints->spline->getId());
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pPoints->spline = nullptr;
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//history.clear();
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}
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void RS_ActionDrawSpline::mouseMoveEvent(QMouseEvent* e) {
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RS_DEBUG->print("RS_ActionDrawSpline::mouseMoveEvent begin");
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RS_Vector mouse = snapPoint(e);
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if (getStatus()==SetNextPoint && pPoints->spline /*&& point.valid*/) {
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deletePreview();
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RS_Spline* tmpSpline = static_cast<RS_Spline*>(pPoints->spline->clone());
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tmpSpline->addControlPoint(mouse);
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tmpSpline->update();
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preview->addEntity(tmpSpline);
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auto cpts = tmpSpline->getControlPoints();
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for (const RS_Vector& vp: cpts) {
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preview->addEntity(new RS_Point(preview.get(), RS_PointData(vp)));
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}
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drawPreview();
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}
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RS_DEBUG->print("RS_ActionDrawSpline::mouseMoveEvent end");
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}
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void RS_ActionDrawSpline::mouseReleaseEvent(QMouseEvent* e) {
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if (e->button()==Qt::LeftButton) {
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RS_CoordinateEvent ce(snapPoint(e));
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coordinateEvent(&ce);
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} else if (e->button()==Qt::RightButton) {
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if (getStatus()==SetNextPoint &&
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pPoints->spline &&
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pPoints->spline->getNumberOfControlPoints()>=pPoints->spline->getDegree()+1) {
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trigger();
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}
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deletePreview();
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init(getStatus()-1);
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}
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}
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void RS_ActionDrawSpline::coordinateEvent(RS_CoordinateEvent* e) {
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if (!e) return;
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RS_Vector mouse = e->getCoordinate();
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switch (getStatus()) {
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case SetStartpoint:
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//data.startpoint = mouse;
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//point = mouse;
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pPoints->history.clear();
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pPoints->history.append(mouse);
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if (!pPoints->spline) {
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pPoints->spline = new RS_Spline(container, pPoints->data);
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pPoints->spline->addControlPoint(mouse);
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}
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//bHistory.clear();
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//bHistory.append(new double(0.0));
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//start = mouse;
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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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//point = mouse;
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pPoints->history.append(mouse);
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//bHistory.append(new double(0.0));
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if (pPoints->spline) {
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//graphicView->deleteEntity(spline);
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pPoints->spline->addControlPoint(mouse);
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//spline->setEndpoint(mouse);
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//if (spline->count()==1) {
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//spline->setLayerToActive();
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//spline->setPenToActive();
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//container->addEntity(spline);
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//}
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deletePreview();
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//graphicView->drawEntity(spline);
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drawSnapper();
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}
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//trigger();
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//data.startpoint = data.endpoint;
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updateMouseButtonHints();
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//graphicView->moveRelativeZero(mouse);
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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 RS_ActionDrawSpline::commandEvent(RS_CommandEvent* e) {
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QString c = e->getCommand().toLower();
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switch (getStatus()) {
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case SetStartpoint:
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if (checkCommand("help", c)) {
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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("close", c)) {
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close();
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updateMouseButtonHints();
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return;
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}*/
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if (checkCommand("undo", c)) {
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undo();
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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 RS_ActionDrawSpline::getAvailableCommands() {
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QStringList cmd;
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switch (getStatus()) {
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case SetStartpoint:
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break;
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case SetNextPoint:
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if (pPoints->history.size()>=2) {
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cmd += command("undo");
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}else if (pPoints->history.size()>=3) {
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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 RS_ActionDrawSpline::updateMouseButtonHints() {
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switch (getStatus()) {
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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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QString msg = "";
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if (pPoints->history.size()>=3) {
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msg += RS_COMMANDS->command("close");
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msg += "/";
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}
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if (pPoints->history.size()>=2) {
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msg += RS_COMMANDS->command("undo");
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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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} else {
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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 RS_ActionDrawSpline::showOptions() {
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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 RS_ActionDrawSpline::hideOptions() {
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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 RS_ActionDrawSpline::updateMouseCursor() {
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graphicView->setMouseCursor(RS2::CadCursor);
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}
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/*
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void RS_ActionDrawSpline::close() {
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if (history.count()>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 RS_ActionDrawSpline::undo() {
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if (pPoints->history.size()>1) {
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pPoints->history.removeLast();
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//bHistory.removeLast();
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deletePreview();
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//graphicView->setCurrentAction(
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// new RS_ActionEditUndo(true, *container, *graphicView));
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if (!pPoints->history.isEmpty()) {
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//point = *history.last();
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}
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if (pPoints->spline) {
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pPoints->spline->removeLastControlPoint();
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if (!pPoints->history.isEmpty()) {
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RS_Vector v = pPoints->history.last();
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graphicView->moveRelativeZero(v);
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}
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graphicView->redraw(RS2::RedrawDrawing);
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}
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} else {
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RS_DIALOGFACTORY->commandMessage(
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tr("Cannot undo: "
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"Not enough entities defined yet."));
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}
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}
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void RS_ActionDrawSpline::setDegree(int deg) {
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pPoints->data.degree = deg;
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if (pPoints->spline) {
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pPoints->spline->setDegree(deg);
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}
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}
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int RS_ActionDrawSpline::getDegree() {
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return pPoints->data.degree;
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}
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void RS_ActionDrawSpline::setClosed(bool c) {
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pPoints->data.closed = c;
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if (pPoints->spline) {
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pPoints->spline->setClosed(c);
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}
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}
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bool RS_ActionDrawSpline::isClosed() {
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return pPoints->data.closed;
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}
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// EOF
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