eseventaddpolygon.cpp

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/*
    Copyright 2006-2019 The QElectroTech Team
    This file is part of QElectroTech.

    QElectroTech is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 2 of the License, or
    (at your option) any later version.

    QElectroTech is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
*/
#include <QObject>

#include "eseventaddpolygon.h"
#include "elementscene.h"
#include "partpolygon.h"
#include "editorcommands.h"

ESEventAddPolygon::ESEventAddPolygon(ElementScene *scene) :
    ESEventInterface(scene),
    m_polygon(nullptr)
{}

ESEventAddPolygon::~ESEventAddPolygon() {
    if (m_running || m_abort)
        delete m_polygon;
}

bool ESEventAddPolygon::mousePressEvent(QGraphicsSceneMouseEvent *event) {
    if (event -> button() == Qt::LeftButton) {
        if(!m_running) m_running = true;
        QPointF pos = m_scene->snapToGrid(event -> scenePos());

        //create new polygon
        if (!m_polygon) {
            m_polygon = new PartPolygon(m_editor);
            m_scene -> addItem(m_polygon);
            m_polygon -> addPoint(pos);
        }

        m_polygon -> addPoint(pos);
        return true;
    }
    return false;
}

bool ESEventAddPolygon::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
    updateHelpCross(event -> scenePos());
    if (!m_polygon) return false;

    m_polygon -> setLastPoint(m_scene -> snapToGrid(event -> scenePos()));
    return true;
}

bool ESEventAddPolygon::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
    if (event -> button() == Qt::RightButton) {
        if (m_polygon) {
            m_polygon -> removeLastPoint();

            if (m_polygon -> polygon().size() > 1)
                { m_polygon -> setLastPoint(m_scene -> snapToGrid(event -> scenePos())); }
            else
                { delete m_polygon; m_polygon = nullptr; }
        }
        else
            { m_running = false; }

        return true;
    }
    return false;
}

bool ESEventAddPolygon::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
{
    if (event -> button() == Qt::LeftButton)
    {
        if (m_polygon)
        {
            m_polygon->removeLastPoint();
            if (m_polygon->polygon().first() == m_polygon->polygon().last())
            {
                m_polygon->removeLastPoint();
                m_polygon->setClosed(true);
            }
            m_scene->undoStack().push(new AddPartCommand(QObject::tr("Polygone"), m_scene, m_polygon));

                //Set m_polygon to nullptr for create new polygon at next mouse press
            m_polygon = nullptr;
            return true;
        }
    }
    return false;
}