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Chenwenxuan
306
actions/rs_actiondrawellipseinscribe.cpp
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306
actions/rs_actiondrawellipseinscribe.cpp
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/****************************************************************************
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**
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* Draw ellipse by foci and a point on ellipse
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Copyright (C) 2011 Dongxu Li (dongxuli2011@gmail.com)
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Copyright (C) 2011 R. van Twisk (librecad@rvt.dds.nl)
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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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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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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#include <QAction>
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#include <QMouseEvent>
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#include "rs_actiondrawellipseinscribe.h"
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#include "rs_dialogfactory.h"
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#include "rs_graphicview.h"
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#include "rs_commandevent.h"
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#include "rs_ellipse.h"
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#include "rs_line.h"
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#include "rs_preview.h"
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#include "rs_debug.h"
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struct RS_ActionDrawEllipseInscribe::Points {
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std::vector<RS_Line*> lines;
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RS_EllipseData eData;
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bool valid{false};
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};
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/**
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* Constructor.
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*
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*/
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RS_ActionDrawEllipseInscribe::RS_ActionDrawEllipseInscribe(
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RS_EntityContainer& container,
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RS_GraphicView& graphicView)
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:RS_PreviewActionInterface("Draw ellipse inscribed",
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container, graphicView)
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, pPoints(new Points{})
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{
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actionType=RS2::ActionDrawEllipseInscribe;
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}
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RS_ActionDrawEllipseInscribe::~RS_ActionDrawEllipseInscribe() = default;
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void RS_ActionDrawEllipseInscribe::clearLines(bool checkStatus)
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{
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while(pPoints->lines.size() ){
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if(checkStatus && (int) pPoints->lines.size()<=getStatus() )
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break;
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pPoints->lines.back()->setHighlighted(false);
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graphicView->drawEntity(pPoints->lines.back());
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pPoints->lines.pop_back();
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}
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}
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void RS_ActionDrawEllipseInscribe::init(int status) {
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RS_PreviewActionInterface::init(status);
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if(status>=0) {
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RS_Snapper::suspend();
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}
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clearLines(true);
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}
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void RS_ActionDrawEllipseInscribe::finish(bool updateTB){
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clearLines(false);
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RS_PreviewActionInterface::finish(updateTB);
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}
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void RS_ActionDrawEllipseInscribe::trigger() {
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RS_PreviewActionInterface::trigger();
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RS_Ellipse* ellipse=new RS_Ellipse(container, pPoints->eData);
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deletePreview();
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container->addEntity(ellipse);
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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(ellipse);
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document->endUndoCycle();
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}
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for(RS_Line*const p: pPoints->lines) {
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if(!p) continue;
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p->setHighlighted(false);
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graphicView->drawEntity(p);
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}
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drawSnapper();
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clearLines(false);
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setStatus(SetLine1);
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RS_DEBUG->print("RS_ActionDrawEllipse4Line::trigger():"
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" entity added: %d", ellipse->getId());
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}
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void RS_ActionDrawEllipseInscribe::mouseMoveEvent(QMouseEvent* e) {
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RS_DEBUG->print("RS_ActionDrawEllipse4Line::mouseMoveEvent begin");
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if(getStatus() == SetLine4) {
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RS_Entity* en = catchEntity(e, RS2::EntityLine, RS2::ResolveAll);
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if(!en) return;
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if(!(en->isVisible() && en->rtti()== RS2::EntityLine)) return;
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for(auto p: pPoints->lines){
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if(en == p) return; //do not pull in the same line again
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}
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if(en->getParent() && en->getParent()->ignoredOnModification()){
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return;
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}
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deletePreview();
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clearLines(true);
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pPoints->lines.push_back(static_cast<RS_Line*>(en));
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if(preparePreview()) {
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pPoints->lines.back()->setHighlighted(true);
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graphicView->drawEntity(pPoints->lines.back());
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RS_Ellipse* e=new RS_Ellipse(preview.get(), pPoints->eData);
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preview->addEntity(e);
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drawPreview();
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}
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}
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RS_DEBUG->print("RS_ActionDrawEllipse4Line::mouseMoveEvent end");
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}
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bool RS_ActionDrawEllipseInscribe::preparePreview(){
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pPoints->valid=false;
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if(getStatus() == SetLine4) {
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RS_Ellipse e{preview.get(), RS_EllipseData()};
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pPoints->valid= e.createInscribeQuadrilateral(pPoints->lines);
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if (pPoints->valid){
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pPoints->eData = e.getData();
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} else if ( RS_DIALOGFACTORY){
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RS_DIALOGFACTORY->commandMessage(tr("Can not determine uniquely an ellipse"));
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}
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}
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return pPoints->valid;
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}
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void RS_ActionDrawEllipseInscribe::mouseReleaseEvent(QMouseEvent* e) {
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// Proceed to next status
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if (e->button()==Qt::LeftButton) {
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if (!e) return;
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RS_Entity* en = catchEntity(e, RS2::EntityLine, RS2::ResolveAll);
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if(!en) return;
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if(!(en->isVisible() && en->rtti()== RS2::EntityLine)) return;
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for(int i=0; i<getStatus(); ++i) {
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if(en->getId() == pPoints->lines[i]->getId()) return; //do not pull in the same line again
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}
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if(en->getParent()) {
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if ( en->getParent()->ignoredOnModification()) return;
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}
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clearLines(true);
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pPoints->lines.push_back(static_cast<RS_Line*>(en));
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switch (getStatus()) {
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case SetLine1:
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case SetLine2:
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case SetLine3:
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en->setHighlighted(true);
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graphicView->drawEntity(en);
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setStatus(getStatus()+1);
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break;
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case SetLine4:
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if( preparePreview()) {
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trigger();
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}
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default:
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break;
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}
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} else if (e->button()==Qt::RightButton) {
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// Return to last status:
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if(getStatus()>0){
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clearLines(true);
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pPoints->lines.back()->setHighlighted(false);
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graphicView->drawEntity(pPoints->lines.back());
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pPoints->lines.pop_back();
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deletePreview();
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}
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init(getStatus()-1);
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}
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}
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//void RS_ActionDrawEllipseInscribe::coordinateEvent(RS_CoordinateEvent* e) {
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//}
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//fixme, support command line
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/*
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void RS_ActionDrawEllipse4Line::commandEvent(RS_CommandEvent* e) {
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QString c = e->getCommand().toLower();
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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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switch (getStatus()) {
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case SetFocus1: {
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bool ok;
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double m = RS_Math::eval(c, &ok);
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if (ok) {
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ratio = m / major.magnitude();
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if (!isArc) {
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trigger();
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} else {
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setStatus(SetAngle1);
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}
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} else
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RS_DIALOGFACTORY->commandMessage(tr("Not a valid expression"));
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}
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break;
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case SetAngle1: {
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bool ok;
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double a = RS_Math::eval(c, &ok);
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if (ok) {
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angle1 = RS_Math::deg2rad(a);
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setStatus(SetAngle2);
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} else
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RS_DIALOGFACTORY->commandMessage(tr("Not a valid expression"));
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}
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break;
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case SetAngle2: {
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bool ok;
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double a = RS_Math::eval(c, &ok);
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if (ok) {
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angle2 = RS_Math::deg2rad(a);
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trigger();
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} else
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RS_DIALOGFACTORY->commandMessage(tr("Not a valid expression"));
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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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*/
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QStringList RS_ActionDrawEllipseInscribe::getAvailableCommands() {
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QStringList cmd;
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return cmd;
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}
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void RS_ActionDrawEllipseInscribe::updateMouseButtonHints() {
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switch (getStatus()) {
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case SetLine1:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Specify the first line"),
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tr("Cancel"));
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break;
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case SetLine2:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Specify the second line"),
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tr("Back"));
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break;
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case SetLine3:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Specify the third line"),
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tr("Back"));
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break;
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case SetLine4:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Specify the fourth line"),
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tr("Back"));
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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_ActionDrawEllipseInscribe::updateMouseCursor() {
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graphicView->setMouseCursor(RS2::SelectCursor);
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}
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// EOF
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