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** This file is part of Qt 3D Studio.
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#include "SelectionRect.h"
#include "TimelineConstants.h"
#include "Ruler.h"

#include <QtGui/qpainter.h>

SelectionRect::SelectionRect(Ruler *ruler) : m_ruler(ruler)
{
    setZValue(100);
    setActive(false);
}

void SelectionRect::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
                          QWidget *widget)
{
    Q_UNUSED(option)
    Q_UNUSED(widget)

    if (m_active)
        painter->drawRect(m_rect);
}

void SelectionRect::start(const QPointF &origin)
{
    m_rect.setTopLeft(origin);

    m_active = true;
}

void SelectionRect::updateSize(const QPointF &pos)
{
    QPointF newPos = pos;
    if (newPos.x() < m_ruler->x())
        newPos.setX(m_ruler->x());

    if (newPos.y() < TimelineConstants::ROW_H)
        newPos.setY(TimelineConstants::ROW_H);

    m_rect.setBottomRight(newPos);
    setRect(m_rect.normalized());
}

void SelectionRect::end()
{
    setRect(QRectF());
    m_active = false;
}

bool SelectionRect::isActive()
{
    return m_active;
}