#include "DefaultProjectorWidget.h"


/**
 * Format the value in a QString.
 *
 * This procedure is implemented for convenience, because it was used in the original Projection Designer.
 *
 * @param value The value to format.
 *
 * @return The formatted QString.
 *
 */
static QString formatValue(double value)
{
    return QString::number(value, 'f', 4);
}


/**
 * Default constructor fot the DefaultProjectorWidget.
 *
 */
DefaultProjectorWidget::DefaultProjectorWidget(ProjectorInterface *plugin, QWidget* pParent, Qt::WFlags flag): ProjectorWidget(plugin, pParent, flag), m_data(plugin)
{
    setupUi (this);
    updateGUI();
}


/**
 * Destructor fot the DefaultProjectorWidget.
 *
 */
DefaultProjectorWidget::~DefaultProjectorWidget()
{
}


/**
 * Updates the widget.
 *
 * This method can be used it two ways: to force a refresh or to update the
 * data of the widget.
 *
 * @param data A const pointer on the data to be used for the widget. This
 *             data will be duplicated in the widget. If data is NULL, the
 *             current data are used and the refresh is forced.
 *
 */
void DefaultProjectorWidget::updateGUI(const ProjectorData* data)
{
    if (NULL!=data) m_data.copy_from(*data);
    fovEdit->setText(formatValue(m_data.fov()));
    aspectRatioEdit->setText(QString::number(m_data.aspectRatio(), 'g'));
    nearEdit->setText(QString::number(m_data.nearDist(), 'g'));
    farEdit->setText(QString::number(m_data.farDist(), 'g'));
    offaxisXEdit->setText(formatValue(m_data.offaxisX()));
    offaxisYEdit->setText(formatValue(m_data.offaxisY()));
}


/**
 * Clears the fields of the widget.
 *
 * This method is typically used when the widget will be disabled (if no
 * channel is specified in Projection Designer, the widget is visible but
 * disabled: fields must be empty).
 *
 */
void DefaultProjectorWidget::clear(void)
{
    fovEdit->setText("");
    aspectRatioEdit->setText("");
    nearEdit->setText("");
    farEdit->setText("");
    offaxisXEdit->setText("");
    offaxisYEdit->setText("");
}


/**
 * [private slot] Called when the Fov changes.
 *
 */
void DefaultProjectorWidget::on_fovEdit_editingFinished()
{
    m_data.setFov(fovEdit->text().toFloat());
    updateGUI();
    emit dataChanged(m_data);
}


/**
 * [private slot] Called when the Aspect Ratio changes.
 *
 */
void DefaultProjectorWidget::on_aspectRatioEdit_editingFinished()
{
    m_data.setAspectRatio(aspectRatioEdit->text().toFloat());
    updateGUI();
    emit dataChanged(m_data);
}


/**
 * [private slot] Called when the Near changes.
 *
 */
void DefaultProjectorWidget::on_nearEdit_editingFinished()
{
    m_data.setNearDist(nearEdit->text().toFloat());
    updateGUI();
    emit dataChanged(m_data);
}


/**
 * [private slot] Called when the Far changes.
 *
 */
void DefaultProjectorWidget::on_farEdit_editingFinished()
{
    m_data.setFarDist(farEdit->text().toFloat());
    updateGUI();
    emit dataChanged(m_data);
}


/**
 * [private slot] Called when the OffAxis-X changes.
 *
 */
void DefaultProjectorWidget::on_offaxisXEdit_editingFinished()
{
    m_data.setOffaxisX(offaxisXEdit->text().toFloat());
    updateGUI();
    emit dataChanged(m_data);
}


/**
 * [private slot] Called when the OffAxis-Y changes.
 *
 */
void DefaultProjectorWidget::on_offaxisYEdit_editingFinished()
{
    m_data.setOffaxisY(offaxisYEdit->text().toFloat());
    updateGUI();
    emit dataChanged(m_data);
}