QTfrontend/ui/widget/drawmapwidget.cpp
author unc0rr
Sun, 02 Dec 2012 01:25:11 +0400
changeset 8178 8bd087478b48
parent 7794 ab7b94c03bc9
child 9080 9b42757d7e71
permissions -rw-r--r--
Fix QSettings problems: - Reopen file in ReadOnly mode if it was open in ReadWrite mode and is being read. This is needed for stupid QSettings which opens file in ReadWrite mode just to call readAll() on it. - Implement setSize(0)

/*
 * Hedgewars, a free turn based strategy game
 * Copyright (c) 2004-2012 Andrey Korotaev <unC0Rr@gmail.com>
 *
 * This program 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; version 2 of the License
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */

#include <QFile>
#include <QMessageBox>
#include <QEvent>
#include <QDebug>

#include "drawmapwidget.h"

DrawMapWidget::DrawMapWidget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::DrawMapWidget)
{
    ui->setupUi(this);

    m_scene = 0;
}

DrawMapWidget::~DrawMapWidget()
{
    delete ui;
}

void DrawMapWidget::changeEvent(QEvent *e)
{
    QWidget::changeEvent(e);
    switch (e->type())
    {
        case QEvent::LanguageChange:
            ui->retranslateUi(this);
            break;
        default:
            break;
    }
}

void DrawMapWidget::setScene(DrawMapScene * scene)
{
    m_scene = scene;

    ui->graphicsView->setScene(scene);
    connect(scene, SIGNAL(pathChanged()), this, SLOT(pathChanged()));
}

void DrawMapWidget::resizeEvent(QResizeEvent * event)
{
    Q_UNUSED(event);

    if(ui->graphicsView && ui->graphicsView->scene())
        ui->graphicsView->fitInView(ui->graphicsView->scene()->sceneRect(), Qt::KeepAspectRatio);
}

void DrawMapWidget::showEvent(QShowEvent * event)
{
    Q_UNUSED(event);

    resizeEvent(0);
}

void DrawMapWidget::undo()
{
    if(m_scene) m_scene->undo();
}

void DrawMapWidget::clear()
{
    if(m_scene) m_scene->clearMap();
}

void DrawMapWidget::setErasing(bool erasing)
{
    if(m_scene) m_scene->setErasing(erasing);
}

void DrawMapWidget::save(const QString & fileName)
{
    if(m_scene)
    {
        QFile file(fileName);

        if(!file.open(QIODevice::WriteOnly))
        {
            QMessageBox errorMsg(this);
            errorMsg.setIcon(QMessageBox::Warning);
            errorMsg.setWindowTitle(QMessageBox::tr("File error"));
            errorMsg.setText(QMessageBox::tr("Cannot open '%1' for writing").arg(fileName));
            errorMsg.setWindowModality(Qt::WindowModal);
            errorMsg.exec();
        }
        else
            file.write(qCompress(m_scene->encode()).toBase64());
    }
}

void DrawMapWidget::load(const QString & fileName)
{
    if(m_scene)
    {
        QFile f(fileName);

        if(!f.open(QIODevice::ReadOnly))
        {
            QMessageBox errorMsg(this);
            errorMsg.setIcon(QMessageBox::Warning);
            errorMsg.setWindowTitle(QMessageBox::tr("File error"));
            errorMsg.setText(QMessageBox::tr("Cannot open '%1' for reading").arg(fileName));
            errorMsg.setWindowModality(Qt::WindowModal);
            errorMsg.exec();
        }
        else
            m_scene->decode(qUncompress(QByteArray::fromBase64(f.readAll())));
    }
}

void DrawMapWidget::pathChanged()
{
    ui->lblPoints->setNum(m_scene->pointsCount());
}



DrawMapView::DrawMapView(QWidget *parent) :
    QGraphicsView(parent)
{
   setMouseTracking(true);

    m_scene = 0;
}


DrawMapView::~DrawMapView()
{

}

void DrawMapView::setScene(DrawMapScene *scene)
{
    m_scene = scene;

    QGraphicsView::setScene(scene);
}

// Why don't I ever recieve this event?
void DrawMapView::enterEvent(QEvent *event)
{
    if(m_scene)
        m_scene->showCursor();

    QGraphicsView::enterEvent(event);
}

void DrawMapView::leaveEvent(QEvent *event)
{
    if(m_scene)
        m_scene->hideCursor();

    QGraphicsView::leaveEvent(event);
}

bool DrawMapView::viewportEvent(QEvent *event)
{
    return QGraphicsView::viewportEvent(event);
}