FlowVis/LayerWidget.cpp

#include "LayerWidget.h"


LayerWidget::LayerWidget(QWidget *parent)
        : QWidget(parent)
{

        box = new QGroupBox("Layer");
        
        comboBoxType = new QComboBox();
        comboBoxType->addItem("Arrows");
        comboBoxType->addItem("Texture");
        comboBoxType->addItem("Streamlines");
        comboBoxType->setCurrentIndex(-1);

        labelType = new QLabel("Type:");

        comboBoxChannel = new QComboBox();
        comboBoxChannel->addItem("Velocity");
        comboBoxChannel->setCurrentIndex(-1);

        labelChannel = new QLabel("Channel:");

        transfer = new TransferSettingsWidget();

        QHBoxLayout* buttons = new QHBoxLayout();

        up = new QPushButton(" up ");
        up->setFixedWidth(50);
        down = new QPushButton("down");
        down->setFixedWidth(50);
        remove = new QPushButton("remove");
        remove->setFixedWidth(50);

        buttons->setMargin(0);
        buttons->addWidget(down,0,Qt::AlignLeft);
        buttons->addWidget(up,0,Qt::AlignCenter);
        buttons->addWidget(remove,0,Qt::AlignLeft);

        grid = new QGridLayout();
        grid->addWidget(labelType,0,0);
        grid->addWidget(comboBoxType,0,1);
        grid->addWidget(labelChannel,1,0);
        grid->addWidget(comboBoxChannel,1,1);

        grid->addWidget(transfer,2,0,1,2,Qt::AlignCenter);
        grid->addLayout(buttons,3,0,1,2,Qt::AlignRight);
        box->setLayout(grid);
        


        layout = new QHBoxLayout();
        layout->addWidget(box);
        layout->setMargin(0);

        this->setLayout(layout);
        this->setSizePolicy(QSizePolicy::Fixed,QSizePolicy::Fixed);

        connectSignals();
}

void LayerWidget::connectSignals()
{
        QObject::connect(up,SIGNAL(clicked()),this,SLOT(upButtonClicked()));
        QObject::connect(down,SIGNAL(clicked()),this,SLOT(downButtonClicked()));
        QObject::connect(remove,SIGNAL(clicked()),this,SLOT(removeButtonClicked()));
        QObject::connect(comboBoxType,SIGNAL(currentIndexChanged(const QString &)),this,SLOT(typeComboBoxChanged(const QString &)));
        QObject::connect(comboBoxChannel,SIGNAL(currentIndexChanged(int)),this,SLOT(channelComboBoxChanged(int)));
        QObject::connect(transfer,SIGNAL(TransferImageUpdated(const QImage)),this,SLOT(transferImageUpdated(const QImage)));
}

void LayerWidget::typeComboBoxChanged(const QString & text)
{
        box->setTitle(text);

        if(text == "Arrows")
                emit typeChanged(TYPE_ARROWS,this);

        if(text == "Texture")
                emit typeChanged(TYPE_TEXTURE,this);

        if(text == "Streamlines")
                emit typeChanged(TYPE_STREAMLINES,this);
}
LayerWidget::~LayerWidget()
{
        delete layout;
}

void LayerWidget::channelCountChanged(int channels)
{
        int indx = comboBoxChannel->currentIndex();

        comboBoxChannel->clear();

        if(channels > 0)
                comboBoxChannel->addItem("Velocity");

        for(int i=1; i<channels; i++)
        {
                QString s("Channel ");
                s += QString::number(i-1);
                comboBoxChannel->addItem(s);
        }

        indx = indx<channels?indx:-1;
        comboBoxChannel->setCurrentIndex(indx);
        emit channelComboBoxChanged(indx);
}

QDataStream &operator<<(QDataStream &out, const LayerWidget *layer)
{
        out << layer->transfer << layer->comboBoxType->currentIndex() << layer->comboBoxChannel->currentIndex();
        return out;
}
QDataStream &operator>>(QDataStream &in, LayerWidget *layer)
{
        int i,j;
        in >> layer->transfer >> i >> j;
        layer->comboBoxType->setCurrentIndex(i);
        
        //if(j < layer->comboBoxChannel->count())
        layer->comboBoxChannel->setCurrentIndex(j);

        return in;
}