eseventaddrect.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 "eseventaddrect.h"
#include "elementscene.h"
#include "partrectangle.h"
#include "editorcommands.h"

ESEventAddRect::ESEventAddRect(ElementScene *scene) :
    ESEventInterface(scene),
    m_rect(nullptr)
{}

ESEventAddRect::~ESEventAddRect() {
    if (m_running || m_abort)
        delete m_rect;
}

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

            //create new rectangle, pos isn't define,
            //so m_rect.pos = 0,0 , that mean event.scenePos is in same coordinate of item
            //we don't need to map point for m_rect
        if (!m_rect)
        {
            m_rect = new PartRectangle(m_editor);
            m_scene -> addItem(m_rect);
            m_rect -> setRect(QRectF(pos, pos));
            return true;
        }

            //Add rectangle to scene
        m_rect  -> setRect(m_rect -> rect().normalized());
        m_scene -> undoStack().push(new AddPartCommand(QObject::tr("Rectangle"), m_scene, m_rect));

            //Set m_rect to nullptr for create new rectangle at next mouse press
        m_rect = nullptr;

        return true;
    }
    return false;
}

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

    QRectF rect(m_rect->rect().topLeft(), m_scene->snapToGrid(event -> scenePos()));
    m_rect -> setRect(rect);
    return true;
}

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