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Chenwenxuan
269
actions/rs_actionpolylineappend.cpp
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269
actions/rs_actionpolylineappend.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_actionpolylineappend.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_polyline.h"
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#include "rs_coordinateevent.h"
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#include "rs_arc.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_ActionDrawPolyline::Points {
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/**
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* Line data defined so far.
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*/
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RS_PolylineData data;
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RS_ArcData arc_data;
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/**
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* Polyline entity we're working on.
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*/
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RS_Polyline* polyline;
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/**
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* last point.
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*/
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RS_Vector point;
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RS_Vector calculatedEndpoint;
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/**
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* Start point of the series of lines. Used for close function.
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*/
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RS_Vector start;
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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_ActionPolylineAppend::RS_ActionPolylineAppend(RS_EntityContainer& container,
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RS_GraphicView& graphicView)
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:RS_ActionDrawPolyline(container, graphicView) {
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actionType=RS2::ActionPolylineAppend;
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}
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void RS_ActionPolylineAppend::trigger() {
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RS_DEBUG->print("RS_ActionPolylineAppend::trigger()");
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RS_PreviewActionInterface::trigger();
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if (!pPoints->polyline) {
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return;
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}
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// add the entity
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//RS_Polyline* polyline = new RS_Polyline(container, data);
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pPoints->polyline->setLayerToActive();
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pPoints->polyline->setPenToActive();
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// upd. undo list:
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if (document) {
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document->startUndoCycle();
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// RVT_PORT need to decide on how to handle undo cycles
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originalPolyline->setUndoState(true);
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document->addUndoable(originalPolyline);
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document->addUndoable(pPoints->polyline);
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document->endUndoCycle();
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}
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// upd view
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deleteSnapper();
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graphicView->moveRelativeZero(RS_Vector(0.0,0.0));
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graphicView->deleteEntity(originalPolyline);
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graphicView->drawEntity(pPoints->polyline);
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graphicView->moveRelativeZero(pPoints->polyline->getEndpoint());
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drawSnapper();
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RS_DEBUG->print("RS_ActionDrawPolyline::trigger(): polyline added: %d",
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pPoints->polyline->getId());
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pPoints->polyline = nullptr;
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}
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void RS_ActionPolylineAppend::mouseReleaseEvent(QMouseEvent* e) {
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if (e->button()==Qt::LeftButton) {
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if (getStatus()==SetStartpoint) {
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originalPolyline = dynamic_cast<RS_Polyline*>(catchEntity(e));
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if (!originalPolyline) {
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RS_DIALOGFACTORY->commandMessage(tr("No Entity found."));
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return;
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} else if (originalPolyline->rtti()!=RS2::EntityPolyline) {
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RS_DIALOGFACTORY->commandMessage(
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tr("Entity must be a polyline."));
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return;
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} else if (originalPolyline->isClosed()) {
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RS_DIALOGFACTORY->commandMessage(
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tr("Can not append nodes in a closed polyline."));
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return;
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} else {
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snapPoint(e);
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RS_Polyline* op=static_cast<RS_Polyline*>(originalPolyline);
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RS_Entity* entFirst = op->firstEntity();
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RS_Entity* entLast = op->lastEntity();
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double dist = graphicView->toGraphDX(snapRange)*0.9;
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RS_Entity* nearestSegment = originalPolyline->getNearestEntity( RS_Vector(graphicView->toGraphX(e->x()),
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graphicView->toGraphY(e->y())), &dist, RS2::ResolveNone);
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pPoints->polyline = static_cast<RS_Polyline*>(originalPolyline->clone());
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container->addEntity(pPoints->polyline);
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prepend = false;
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if (nearestSegment == entFirst){
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prepend = true;
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pPoints->point = originalPolyline->getStartpoint();
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}else if (nearestSegment == entLast){
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pPoints->point = originalPolyline->getEndpoint();
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}else{
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RS_DIALOGFACTORY->commandMessage(
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tr("Click somewhere near the beginning or end of existing polyline."));
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}
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}
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}
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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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trigger();
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}
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// deletePreview();
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//clearPreview();
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deleteSnapper();
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init(getStatus()-1);
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}
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}
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void RS_ActionPolylineAppend::coordinateEvent(RS_CoordinateEvent* e) {
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if (!e) {
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return;
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}
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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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pPoints->history.clear();
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pPoints->history.append(pPoints->point);
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pPoints->bHistory.clear();
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pPoints->bHistory.append(0.0);
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pPoints->start = pPoints->point;
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setStatus(SetNextPoint);
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graphicView->moveRelativeZero(pPoints->point);
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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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pPoints->point = mouse;
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pPoints->history.append(mouse);
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pPoints->bHistory.append(0.0);
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if (!pPoints->polyline) {
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pPoints->polyline = new RS_Polyline(container, pPoints->data);
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pPoints->polyline->addVertex(pPoints->start, 0.0, prepend);
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}
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if (pPoints->polyline) {
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pPoints->polyline->addVertex(mouse, 0.0, prepend);
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// polyline->setEndpoint(mouse);
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if (pPoints->polyline->count()==1) {
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pPoints->polyline->setLayerToActive();
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pPoints->polyline->setPenToActive();
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}
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// RVT_PORT (can be deleted) deletePreview();
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//clearPreview();
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deleteSnapper();
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graphicView->drawEntity(pPoints->polyline);
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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_ActionPolylineAppend::updateMouseButtonHints() {
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switch (getStatus()) {
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case SetStartpoint:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Specify the polyline somewhere near the beginning or end 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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}
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if (pPoints->history.size()>=2) {
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RS_DIALOGFACTORY->updateMouseWidget(
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tr("Specify next 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 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_ActionPolylineAppend::undo() {
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if (pPoints->history.size()>1) {
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pPoints->history.removeLast();
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pPoints->bHistory.removeLast();
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deletePreview();
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pPoints->point = pPoints->history.last();
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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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// EOF
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