eseventaddline.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 <QGraphicsSceneMouseEvent>
#include <QObject>

#include "eseventaddline.h"
#include "elementscene.h"
#include "qetelementeditor.h"
#include "partline.h"
#include "editorcommands.h"

ESEventAddLine::ESEventAddLine(ElementScene *scene) :
    ESEventInterface (scene),
    m_line           (nullptr)
{}

ESEventAddLine::~ESEventAddLine() {
    if (m_running || m_abort)
        delete m_line;
}

bool ESEventAddLine::mousePressEvent(QGraphicsSceneMouseEvent *event) {

    if (event -> button() == Qt::LeftButton) {

        if (! m_running) m_running = true;
        QPointF pos = m_scene -> snapToGrid(event -> scenePos());

        //Create new line
        if (!m_line) {
            m_line = new PartLine(m_editor);
            m_scene -> addItem(m_line);
            m_line->setLine(QLineF(pos, pos));
            return true;
        }

        //Add new line to scene
        m_scene -> undoStack().push(new AddPartCommand(QObject::tr("ligne"), m_scene, m_line));

        //Set m_line to nullptr for create new line at next mouse press
        m_line = nullptr;

        return true;
    }

    return false;
}

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

    QLineF line = m_line->line();
    line.setP2(m_scene -> snapToGrid(event -> scenePos()));
    m_line -> setLine(line);
    return true;
}

bool ESEventAddLine::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
    if (event -> button() == Qt::RightButton) {
        if (m_line) {delete m_line; m_line = nullptr;}
        else        {m_running = false;}
        return true;
    }
    return false;
}