centralwidget.cpp

/******************************************************************************
*
*   This file is part of Cardio Curves.
*   Copyright (C) 2009 Jan Gunnar Andreassen
*   Copyright (C) 2009 Lars Magne Engedal
*
*   Cardio Curves is free software: you can redistribute it and/or modify
*   it under the terms of the GNU Lesser General Public License as published
*   by the Free Software Foundation, either version 2.1 of the License, or
*   (at your option) any later version.
*
*   Cardio Cruves 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 Lesser General Public License for more details.
*
*   You should have received a copy of the GNU Lesser General Public License
*   along with Cardio Curves.  If not, see <http://www.gnu.org/licenses/>.
*
*   Developer contact:
*       (janislazzaroni at users.sourceforge.net)
*       (engedal at users.sourceforge.net )
******************************************************************************/

#include <QtGui>

#include "centralwidget.h"
#include "plotting.h"
#include "datahandler.h"
#include "mferreader.h"
#include "simpleplot.h"
#include "filereader.h"

CentralWidget::CentralWidget(QWidget *parent)
        : QWidget(parent)
{
    plotting = 0;
    dataToPlot = 0;
    mferReader = 0;
    fileReader = 0;
    QVBoxLayout *layout = new QVBoxLayout;
    setLayout(layout);
    init();
}

void CentralWidget::init()
{
    activeMode=NODATA_MODE;

    noDataModeImageLabel = new QLabel();
    QPixmap helper(tr(":/ourstyle/images/ecg.png"));
    noDataModeImageLabel->setPixmap(helper);
    noDataModeImageLabel->setAlignment(Qt::AlignCenter);

    noDataModeTextLabel = new QLabel();
    noDataModeTextLabel->setText(tr("<span align=center><h1>Cardio Curves</h1>"
        "<h2>Open a file, or press F1 for help.</h2></span>"));

    layout()->addWidget(noDataModeTextLabel);
    layout()->addWidget(noDataModeImageLabel);

    if (plotting) delete plotting;
    plotting = new Plotting(this);

    if (dataToPlot) delete dataToPlot;
    dataToPlot = new DataHandler();

    if (mferReader) delete mferReader;
    mferReader = new MferReader();

    if (fileReader) delete fileReader;
    fileReader = new FileReader();
}

void CentralWidget::setActiveMode(ModeSelector newMode)
{
    if (newMode != activeMode)
    {
        switch (newMode)
        {
        case NODATA_MODE:
            //Sets up the default screen, deleting if neccessary old stuff
            init();
            break;
        case SINGLECHANNEL_MODE:
            //Now we set up the widget for data plotting
            layout()->removeWidget(noDataModeImageLabel);
            delete noDataModeImageLabel;
            layout()->removeWidget(noDataModeTextLabel);
            delete noDataModeTextLabel;

            layout()->addWidget(plotting);
            layout()->update();
            break;
        case MULTICHANNEL_MODE:
            //Do nothing, impossible to select as yet...
            break;
        case LIVE_MODE:
            //Do nothing, impossible to select as yet...
            break;
        }
        activeMode = newMode;
    }
}

bool CentralWidget::readFile(const QString &fileName)
{
  this->fileName = fileName;
    //read file, return true or false depending on success
    if (fileName.endsWith(".mwf", Qt::CaseInsensitive))
    {
        mferReader->readFile(fileName);
        dataToPlot->setSampleprSecond(mferReader->samplesprSecond());
        //create dataHandler with right samplingrate
        int screens = mferReader->fillData(dataToPlot->getYLines(), 0, 10);
        qDebug() << "screens:" << screens;
        dataToPlot->setLineAxisBounds(mferReader->lineAxisBounds());
        plotting->plotSingelChannel(*dataToPlot);
        emit setupSliders(screens, 0, NULL);
        return true;
    }
    else if (fileName.endsWith(".txt", Qt::CaseInsensitive))
    {
        fileReader->readFile(fileName);
        int screens = fileReader->fillData(dataToPlot->getYLines(), 0, 10);
        dataToPlot->setLineAxisBounds(fileReader->lineAxisBounds());
        plotting->plotSingelChannel(*dataToPlot);
        emit setupSliders(screens, 0, NULL);
        return true;
    }
    else
    {
        return false;
    }
}

void CentralWidget::printSlot(QPrinter *thePrinter)
{
    QPainter painter(thePrinter);
    QRect r = painter.viewport();
    QSize s = size();
    s.scale(r.size(), Qt::KeepAspectRatio);
    painter.setViewport(r.x(), r.y(), s.width(), s.height());
    painter.setWindow(rect());

    QColor c(Qt::white), old = palette().background().color();
    QPalette p;
    p.setColor(backgroundRole(), c);
    setPalette(p);
    this->render(&painter);
    p.setColor(backgroundRole(), old);
    setPalette(p);
}

void CentralWidget::updateScreen(int screenNumber)
{
  if (fileName.endsWith(".mwf", Qt::CaseInsensitive))
  {
        mferReader->fillData(dataToPlot->getYLines(), screenNumber, 10);
  }
  else if (fileName.endsWith(".txt", Qt::CaseInsensitive))
  {
        fileReader->fillData(dataToPlot->getYLines(), screenNumber, 10);
  }

    plotting->updateScreen(*dataToPlot);
}

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