#include "qpieslice.h"

QTCOMMERCIALCHART_BEGIN_NAMESPACE

#define DEFAULT_PEN_COLOR         Qt::black
#define DEFAULT_BRUSH_COLOR       Qt::white
#define DEFAULT_LABEL_ARM_LENGTH  40
#define DEFAULT_EXPOLODE_DISTANCE 20

/*!
    \class QPieSlice
    \brief QtCommercial charts pie series API.

*/

/*!
    \property QPieSlice::label

    Label of the slice.
*/

/*!
    \property QPieSlice::value

    Value of the slice.
*/

/*!
    Constructs an empty slice with a \a parent.
    Note that QPieSeries takes ownership of the slice when it is set/added.
    \sa QPieSeries::set(), QPieSeries::add()
*/
QPieSlice::QPieSlice(QObject *parent)
    :QObject(parent),
    m_value(0),
    m_isLabelVisible(false),
    m_isExploded(false),
    m_explodeDistance(DEFAULT_EXPOLODE_DISTANCE),
    m_percentage(0),
    m_angle(0),
    m_angleSpan(0),
    m_pen(DEFAULT_PEN_COLOR),
    m_brush(DEFAULT_BRUSH_COLOR),
    m_labelPen(DEFAULT_PEN_COLOR),
    m_labelArmLength(DEFAULT_LABEL_ARM_LENGTH)
{

}

/*!
    Constructs an empty slice with given \a value, \a label and a \a parent.
    Note that QPieSeries takes ownership of the slice when it is set/added.
    \sa QPieSeries::set(), QPieSeries::add()
*/
QPieSlice::QPieSlice(qreal value, QString label, QObject *parent)
    :QObject(parent),
    m_value(value),
    m_label(label),
    m_isLabelVisible(false),
    m_isExploded(false),
    m_explodeDistance(DEFAULT_EXPOLODE_DISTANCE),
    m_percentage(0),
    m_angle(0),
    m_angleSpan(0),
    m_pen(DEFAULT_PEN_COLOR),
    m_brush(DEFAULT_BRUSH_COLOR),
    m_labelPen(DEFAULT_PEN_COLOR),
    m_labelArmLength(DEFAULT_LABEL_ARM_LENGTH)
{

}

/*!
    Destroys the slice.
    User should not delete the slice if it has been added to the series.
*/
QPieSlice::~QPieSlice()
{

}

/*!
    Gets the value of the slice.
    Note that all values in the series
    \sa setValue()
*/
qreal QPieSlice::value() const
{
    return m_value;
}

/*!
    Gets the label of the slice.
    \sa setLabel()
*/
QString QPieSlice::label() const
{
    return m_label;
}

/*!
    Returns true if label is set as visible.
    \sa setLabelVisible()
*/
bool QPieSlice::isLabelVisible() const
{
    return m_isLabelVisible;
}

/*!
    Returns true if slice is exloded from the pie.
    \sa setExploded()
*/
bool QPieSlice::isExploded() const
{
    return m_isExploded;
}

/*!
    Returns the explosion distance of the slice.
    Default value is 20.
    \sa setExplodeDistance()
*/
qreal QPieSlice::explodeDistance() const
{
    return m_explodeDistance;
}

/*!
    Returns the percentage of this slice compared to all slices in the same series.
    Updated internally after the slice is added to the series.
*/
qreal QPieSlice::percentage() const
{
    return m_percentage;
}

/*!
    Returns the starting angle of this slice in the series it belongs to.
    Updated internally after the slice is added to the series.
*/
qreal QPieSlice::angle() const
{
    return m_angle;
}

/*!
    Returns the angle span of this slice in the series it belongs to.
    Updated internally after the slice is added to the series.
*/
qreal QPieSlice::angleSpan() const
{
    return m_angleSpan;
}

/*!
    Returns the pen used to draw this slice.
    \sa setPen()
*/
QPen QPieSlice::pen() const
{
    return m_pen;
}

/*!
    Returns the brush used to draw this slice.
    \sa setBrush()
*/
QBrush QPieSlice::brush() const
{
    return m_brush;
}

/*!
    Returns the pen used to draw label in this slice.
    \sa setLabelPen()
*/
QPen QPieSlice::labelPen() const
{
    return m_labelPen;
}

/*!
    Returns the font used to draw label in this slice.
    \sa setLabelFont()
*/
QFont QPieSlice::labelFont() const
{
    return m_labelFont;
}

/*!
    Returns the label arm lenght used in this slice.
    Default value is 40 pixels.
    \sa setLabelArmLength()
*/
qreal QPieSlice::labelArmLength() const
{
    return m_labelArmLength;
}

/*!
    \fn void QPieSlice::clicked()

    This signal is emitted when user has clicked the slice.

    \sa QPieSeries::clicked()
*/

/*!
    \fn void QPieSlice::hoverEnter()

    This signal is emitted when user has hovered over the slice.

    \sa QPieSeries::hoverEnter()
*/

/*!
    \fn void QPieSlice::hoverLeave()

    This signal is emitted when user has hovered away from the slice.

    \sa QPieSeries::hoverLeave()
*/

/*!
    \fn void QPieSlice::changed()

    This signal emitted when something has changed in the slice.

    \sa QPieSeries::changed()
*/

/*!
    Sets the value of this slice.
    \sa value()
*/
void QPieSlice::setValue(qreal value)
{
    if (m_value != value) {
        m_value = value;
        emit changed();
    }
}

/*!
    Sets the \a label of the slice.
    \sa label()
*/
void QPieSlice::setLabel(QString label)
{
    if (m_label != label) {
        m_label = label;
        emit changed();
    }
}

/*!
    Sets the label \a visible in this slice.
    \sa isLabelVisible(), QPieSeries::setLabelsVisible()
*/
void QPieSlice::setLabelVisible(bool visible)
{
    if (m_isLabelVisible != visible) {
        m_isLabelVisible = visible;
        emit changed();
    }
}

/*!
    Sets this slice \a exploded.
    \sa isExploded(), setExplodeDistance(), QPieSeries::enableClickExplodes()
*/
void QPieSlice::setExploded(bool exploded)
{
    if (m_isExploded != exploded) {
        m_isExploded = exploded;
        emit changed();
    }
}

/*!
    Sets the explosion \a distance of this slice.
    It is the distance the slice is moved away from the pie center.
    \sa explodeDistance(), isExploded(), QPieSeries::enableClickExplodes()
*/
void QPieSlice::setExplodeDistance(qreal distance)
{
    if (m_explodeDistance != distance) {
        m_explodeDistance = distance;
        emit changed();
    }
}

/*!
    Sets the \a pen used to draw this slice.
    Note that applying a theme will override this.
    \sa pen()
*/
void QPieSlice::setPen(QPen pen)
{
    if (m_pen != pen) {
        m_pen = pen;
        emit changed();
    }
}

/*!
    Sets the \a brush used to draw this slice.
    Note that applying a theme will override this.
    \sa brush()
*/
void QPieSlice::setBrush(QBrush brush)
{
    if (m_brush != brush) {
        m_brush = brush;
        emit changed();
    }
}

/*!
    Sets the \a pen used to draw the label in this slice.
    Note that applying a theme will override this.
    \sa labelPen()
*/
void QPieSlice::setLabelPen(QPen pen)
{
    if (m_labelPen != pen) {
        m_labelPen = pen;
        emit changed();
    }
}

/*!
    Sets the \a font used to draw the label in this slice.
    Note that applying a theme will override this.
    \sa labelFont()
*/
void QPieSlice::setLabelFont(QFont font)
{
    if (m_labelFont != font) {
        m_labelFont = font;
        emit changed();
    }
}

/*!
    Sets the label arm \a length used to draw the label in this slice.
    \sa labelArmLength()
*/
void QPieSlice::setLabelArmLength(qreal length)
{
    if (m_labelArmLength != length) {
        m_labelArmLength = length;
        emit changed();
    }
}

#include "moc_qpieslice.cpp"

QTCOMMERCIALCHART_END_NAMESPACE