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Chenwenxuan
333
actions/rs_actiondrawlineangle.cpp
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333
actions/rs_actiondrawlineangle.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<cmath>
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#include <QAction>
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#include <QMouseEvent>
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#include "rs_actiondrawlineangle.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_settings.h"
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#include "rs_line.h"
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#include "rs_coordinateevent.h"
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#include "rs_math.h"
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#include "rs_preview.h"
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#include "rs_debug.h"
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struct RS_ActionDrawLineAngle::Points {
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/**
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* Line data defined so far.
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*/
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RS_LineData data;
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/**
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* Position.
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*/
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RS_Vector pos;
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/**
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* Line angle.
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*/
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double angle;
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/**
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* Line length.
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*/
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double length{1.};
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/**
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* Is the angle fixed?
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*/
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bool fixedAngle;
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/**
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* Snap point (start, middle, end).
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*/
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int snpPoint{0};
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};
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RS_ActionDrawLineAngle::RS_ActionDrawLineAngle(RS_EntityContainer& container,
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RS_GraphicView& graphicView,
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double angle,
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bool fixedAngle, RS2::ActionType actionType)
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:RS_PreviewActionInterface("Draw lines with given angle",
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container, graphicView)
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, pPoints(new Points{})
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{
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this->actionType=actionType;
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pPoints->angle = angle;
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pPoints->fixedAngle = fixedAngle;
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RS_DIALOGFACTORY->requestOptions(this, true,false);
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reset();
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}
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RS_ActionDrawLineAngle::~RS_ActionDrawLineAngle() {
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RS_SETTINGS->beginGroup("/Draw");
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if (!hasFixedAngle()) {
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RS_SETTINGS->writeEntry("/LineAngleAngle", RS_Math::rad2deg(getAngle()));
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}
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RS_SETTINGS->writeEntry("/LineAngleLength", getLength());
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RS_SETTINGS->writeEntry("/LineAngleSnapPoint", getSnapPoint());
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RS_SETTINGS->endGroup();
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}
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void RS_ActionDrawLineAngle::reset() {
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pPoints->data = {{}, {}};
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}
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void RS_ActionDrawLineAngle::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_ActionDrawLineAngle::trigger() {
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RS_PreviewActionInterface::trigger();
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preparePreview();
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RS_Line* line = new RS_Line{container, pPoints->data};
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line->setLayerToActive();
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line->setPenToActive();
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container->addEntity(line);
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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(line);
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document->endUndoCycle();
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}
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graphicView->moveRelativeZero(pPoints->data.startpoint);
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graphicView->redraw(RS2::RedrawDrawing);
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RS_DEBUG->print("RS_ActionDrawLineAngle::trigger(): line added: %d",
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line->getId());
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}
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void RS_ActionDrawLineAngle::mouseMoveEvent(QMouseEvent* e) {
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RS_DEBUG->print("RS_ActionDrawLineAngle::mouseMoveEvent begin");
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if (getStatus()==SetPos) {
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pPoints->pos = snapPoint(e);
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deletePreview();
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preparePreview();
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preview->addEntity(new RS_Line(preview.get(),
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pPoints->data));
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drawPreview();
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}
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RS_DEBUG->print("RS_ActionDrawLineAngle::mouseMoveEvent end");
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}
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void RS_ActionDrawLineAngle::mouseReleaseEvent(QMouseEvent* e) {
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if (e->button()==Qt::LeftButton) {
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if (getStatus()==SetPos) {
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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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deletePreview();
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init(getStatus()-1);
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}
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}
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void RS_ActionDrawLineAngle::preparePreview() {
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RS_Vector p1, p2;
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// End:
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if (pPoints->snpPoint == 2) {
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p2.setPolar(-pPoints->length, pPoints->angle);
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} else {
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p2.setPolar(pPoints->length, pPoints->angle);
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}
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// Middle:
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if (pPoints->snpPoint == 1) {
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p1 = pPoints->pos - (p2 / 2);
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} else {
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p1 = pPoints->pos;
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}
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p2 += p1;
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pPoints->data = {p1, p2};
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}
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void RS_ActionDrawLineAngle::coordinateEvent(RS_CoordinateEvent* e) {
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if (!e) return;
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switch (getStatus()) {
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case SetPos:
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pPoints->pos = e->getCoordinate();
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trigger();
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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_ActionDrawLineAngle::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 SetPos:
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if (!pPoints->fixedAngle && checkCommand("angle", c)) {
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deletePreview();
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setStatus(SetAngle);
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} else if (checkCommand("length", c)) {
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deletePreview();
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setStatus(SetLength);
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}
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break;
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case SetAngle: {
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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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e->accept();
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pPoints->angle = RS_Math::deg2rad(a);
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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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RS_DIALOGFACTORY->requestOptions(this, true, true);
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setStatus(SetPos);
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}
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break;
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case SetLength: {
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bool ok;
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double l = RS_Math::eval(c, &ok);
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if (ok) {
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e->accept();
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pPoints->length = l;
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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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RS_DIALOGFACTORY->requestOptions(this, true, true);
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setStatus(SetPos);
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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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void RS_ActionDrawLineAngle::setSnapPoint(int sp) {
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pPoints->snpPoint = sp;
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}
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int RS_ActionDrawLineAngle::getSnapPoint() const{
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return pPoints->snpPoint;
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}
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void RS_ActionDrawLineAngle::setAngle(double a) {
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pPoints->angle = a;
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}
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double RS_ActionDrawLineAngle::getAngle() const{
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return pPoints->angle;
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}
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void RS_ActionDrawLineAngle::setLength(double l) {
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pPoints->length = l;
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}
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double RS_ActionDrawLineAngle::getLength() const{
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return pPoints->length;
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}
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bool RS_ActionDrawLineAngle::hasFixedAngle() const{
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switch(rtti()){
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case RS2::ActionDrawLineHorizontal:
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case RS2::ActionDrawLineVertical:
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return true;
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default:
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return false;
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}
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}
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QStringList RS_ActionDrawLineAngle::getAvailableCommands() {
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QStringList cmd;
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switch (getStatus()) {
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case SetPos:
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if (!pPoints->fixedAngle) {
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cmd += command("angle");
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}
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cmd += command("length");
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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_ActionDrawLineAngle::updateMouseButtonHints() {
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switch (getStatus()) {
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case SetPos:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Specify position"),
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tr("Cancel"));
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break;
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case SetAngle:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Enter angle:"), tr("Back"));
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break;
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case SetLength:
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RS_DIALOGFACTORY->updateMouseWidget(tr("Enter length:"), tr("Back"));
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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_ActionDrawLineAngle::showOptions() {
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RS_ActionInterface::showOptions();
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RS_DIALOGFACTORY->requestOptions(this, true,true);
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}
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void RS_ActionDrawLineAngle::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_ActionDrawLineAngle::updateMouseCursor() {
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graphicView->setMouseCursor(RS2::CadCursor);
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}
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// EOF
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