QTfrontend/ui/widget/drawmapwidget.cpp
author unC0Rr
Sat, 17 Mar 2018 23:55:32 +0300
changeset 13245 950186baa764
parent 13214 f5d36be88c61
child 14841 b9437746bffb
permissions -rw-r--r--
Fix crasher
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/*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2015 Andrey Korotaev <unC0Rr@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; version 2 of the License
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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 St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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#include <QFile>
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#include <QMessageBox>
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#include <QEvent>
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#include <QDebug>
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#include "drawmapwidget.h"
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DrawMapWidget::DrawMapWidget(QWidget *parent) :
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    QWidget(parent),
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    ui(new Ui::DrawMapWidget)
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{
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    ui->setupUi(this);
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    m_scene = 0;
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}
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DrawMapWidget::~DrawMapWidget()
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{
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    delete ui;
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}
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void DrawMapWidget::changeEvent(QEvent *e)
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{
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    QWidget::changeEvent(e);
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    switch (e->type())
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    {
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        case QEvent::LanguageChange:
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            ui->retranslateUi(this);
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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 DrawMapWidget::setScene(DrawMapScene * scene)
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{
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    m_scene = scene;
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    ui->graphicsView->setScene(scene);
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    connect(scene, SIGNAL(pathChanged()), this, SLOT(pathChanged()));
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    connect(scene, SIGNAL(brushSizeChanged(int)), this, SLOT(brushSizeChanged_slot(int)));
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}
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void DrawMapWidget::resizeEvent(QResizeEvent * event)
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{
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    Q_UNUSED(event);
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	if(!m_scene)
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		return;
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    int height = this->height();
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    int width = this->width();
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    if ((m_scene->height() > 0) && (m_scene->width() > 0) && (height > 0))
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    {
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        qreal saspect = m_scene->width() / m_scene->height();
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        qreal h = height;
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        qreal w = width;
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        qreal waspect = w / h;
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        if (waspect < saspect)
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        {
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            h = w / saspect;
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        }
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        else if (waspect > saspect)
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        {
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            w = saspect * h;
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        }
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        int fixedh = (int)h;
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        int fixedw = (int)w;
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        if (ui->graphicsView->width() != fixedw)
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        {
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            ui->graphicsView->setFixedWidth(fixedw);
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        }
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        if (ui->graphicsView->height() != fixedh)
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        {
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            ui->graphicsView->setFixedHeight(fixedh);
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        }
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    }
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    if(ui->graphicsView && ui->graphicsView->scene())
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        ui->graphicsView->fitInView(m_scene->sceneRect(), Qt::KeepAspectRatio);
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}
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void DrawMapWidget::showEvent(QShowEvent * event)
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{
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    Q_UNUSED(event);
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    resizeEvent(0);
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}
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void DrawMapWidget::undo()
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{
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    if(m_scene) m_scene->undo();
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}
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void DrawMapWidget::clear()
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{
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    if(m_scene) m_scene->clearMap();
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}
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void DrawMapWidget::optimize()
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{
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    if(m_scene) m_scene->optimize();
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}
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void DrawMapWidget::setErasing(bool erasing)
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{
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    if(m_scene) m_scene->setErasing(erasing);
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}
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void DrawMapWidget::setPathType(DrawMapScene::PathType pathType)
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{
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    if(m_scene) m_scene->setPathType(pathType);
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}
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void DrawMapWidget::setBrushSize(int brushSize)
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{
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    if(m_scene) m_scene->setBrushSize(brushSize);
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}
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void DrawMapWidget::save(const QString & fileName)
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{
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    if(m_scene)
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    {
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        QFile file(fileName);
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        if(!file.open(QIODevice::WriteOnly))
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        {
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            QMessageBox errorMsg(this);
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            errorMsg.setIcon(QMessageBox::Warning);
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            errorMsg.setWindowTitle(QMessageBox::tr("File error"));
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            errorMsg.setText(QMessageBox::tr("Cannot open '%1' for writing").arg(fileName));
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            errorMsg.setWindowModality(Qt::WindowModal);
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            errorMsg.exec();
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        }
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        else
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            file.write(qCompress(m_scene->encode()).toBase64());
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    }
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}
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void DrawMapWidget::load(const QString & fileName)
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{
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    if(m_scene)
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    {
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        QFile f(fileName);
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        if(!f.open(QIODevice::ReadOnly))
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        {
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            QMessageBox errorMsg(this);
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            errorMsg.setIcon(QMessageBox::Warning);
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            errorMsg.setWindowTitle(QMessageBox::tr("File error"));
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            errorMsg.setText(QMessageBox::tr("Cannot open '%1' for reading").arg(fileName));
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            errorMsg.setWindowModality(Qt::WindowModal);
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            errorMsg.exec();
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        }
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        else
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            m_scene->decode(qUncompress(QByteArray::fromBase64(f.readAll())));
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            //m_scene->decode(f.readAll());
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    }
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}
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void DrawMapWidget::pathChanged()
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{
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    ui->lblPoints->setNum(m_scene->pointsCount());
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}
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void DrawMapWidget::brushSizeChanged_slot(int brushSize)
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{
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    emit brushSizeChanged(brushSize);
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}
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DrawMapView::DrawMapView(QWidget *parent) :
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    QGraphicsView(parent)
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{
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   setMouseTracking(true);
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    m_scene = 0;
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}
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DrawMapView::~DrawMapView()
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{
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}
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void DrawMapView::setScene(DrawMapScene *scene)
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{
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    m_scene = scene;
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    QGraphicsView::setScene(scene);
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}
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// Why don't I ever receive this event?
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void DrawMapView::enterEvent(QEvent *event)
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{
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    if(m_scene)
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        m_scene->showCursor();
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    QGraphicsView::enterEvent(event);
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}
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void DrawMapView::leaveEvent(QEvent *event)
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{
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    if(m_scene)
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        m_scene->hideCursor();
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    QGraphicsView::leaveEvent(event);
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}
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bool DrawMapView::viewportEvent(QEvent *event)
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{
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    return QGraphicsView::viewportEvent(event);
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}