OpenBoard/src/domain/UBGraphicsStrokesGroup.cpp

#include "UBGraphicsStrokesGroup.h"

#include "domain/UBGraphicsPolygonItem.h"

#include "core/memcheck.h"

UBGraphicsStrokesGroup::UBGraphicsStrokesGroup(QGraphicsItem *parent):QGraphicsItemGroup(parent)
{
    mDelegate = new UBGraphicsItemDelegate(this, 0, true, true, false);
    mDelegate->init();
    mDelegate->setFlippable(true);
    mDelegate->setRotatable(true);

    setData(UBGraphicsItemData::ItemLayerType, UBItemLayerType::Object);

    setUuid(QUuid::createUuid());
    setData(UBGraphicsItemData::itemLayerType, QVariant(itemLayerType::ObjectItem)); //Necessary to set if we want z value to be assigned correctly
    setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
    setFlag(QGraphicsItem::ItemIsSelectable, true);
    setFlag(QGraphicsItem::ItemIsMovable, true);
}

UBGraphicsStrokesGroup::~UBGraphicsStrokesGroup()
{
    if(mDelegate){
        delete mDelegate;
    }
}

void UBGraphicsStrokesGroup::setUuid(const QUuid &pUuid)
{
    UBItem::setUuid(pUuid);
    setData(UBGraphicsItemData::ItemUuid, QVariant(pUuid)); //store item uuid inside the QGraphicsItem to fast operations with Items on the scene
}
void UBGraphicsStrokesGroup::setColor(const QColor &color, colorType pColorType)
{
    //TODO Implement common mechanism of managing groups, drop UBGraphicsStroke if it's obsolete
    //Using casting for the moment
    foreach (QGraphicsItem *item, childItems()) {
        if (item->type() == UBGraphicsPolygonItem::Type) {
            UBGraphicsPolygonItem *curPolygon = static_cast<UBGraphicsPolygonItem *>(item);

            switch (pColorType) {
            case currentColor :
                curPolygon->setColor(color);
                break;
            case colorOnLightBackground :
                 curPolygon->setColorOnLightBackground(color);
                break;
            case colorOnDarkBackground :
                 curPolygon->setColorOnDarkBackground(color);
                break;
            }
        }
    }
}

QColor UBGraphicsStrokesGroup::color(colorType pColorType) const
{
    QColor result;

    foreach (QGraphicsItem *item, childItems()) {
        if (item->type() == UBGraphicsPolygonItem::Type) {
            UBGraphicsPolygonItem *curPolygon = static_cast<UBGraphicsPolygonItem *>(item);

            switch (pColorType) {
            case currentColor :
                result = curPolygon->color();
                break;
            case colorOnLightBackground :
                result = curPolygon->colorOnLightBackground();
                break;
            case colorOnDarkBackground :
                result = curPolygon->colorOnDarkBackground();
                break;
            }

        }
    }

    return result;
}

void UBGraphicsStrokesGroup::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
    if (mDelegate->mousePressEvent(event))
    {
        //NOOP
    }
    else
    {
//        QGraphicsItemGroup::mousePressEvent(event);
    }
}

void UBGraphicsStrokesGroup::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
    if (mDelegate->mouseMoveEvent(event))
    {
        // NOOP;
    }
    else
    {
        QGraphicsItemGroup::mouseMoveEvent(event);
    }
}

void UBGraphicsStrokesGroup::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
    mDelegate->mouseReleaseEvent(event);
    QGraphicsItemGroup::mouseReleaseEvent(event);
}

UBItem* UBGraphicsStrokesGroup::deepCopy() const
{
    UBGraphicsStrokesGroup* copy = new UBGraphicsStrokesGroup();

    QList<QGraphicsItem*> chl = childItems();

    foreach(QGraphicsItem *child, chl)
    {
        UBGraphicsPolygonItem *polygon = dynamic_cast<UBGraphicsPolygonItem*>(child);
        if (polygon)
        {
            copy->addToGroup(dynamic_cast<QGraphicsItem*>(polygon->deepCopy()));
            polygon->setStrokesGroup(copy);
        }
    }
    copyItemParameters(copy);

    return copy;
}

void UBGraphicsStrokesGroup::copyItemParameters(UBItem *copy) const
{
    UBGraphicsStrokesGroup *cp = dynamic_cast<UBGraphicsStrokesGroup*>(copy);
    {
        cp->setTransform(transform());

        cp->setFlag(QGraphicsItem::ItemIsMovable, true);
        cp->setFlag(QGraphicsItem::ItemIsSelectable, true);
        cp->setData(UBGraphicsItemData::ItemLayerType, this->data(UBGraphicsItemData::ItemLayerType));
        cp->setData(UBGraphicsItemData::ItemLocked, this->data(UBGraphicsItemData::ItemLocked));
    }
}

void UBGraphicsStrokesGroup::remove()
{
    if (mDelegate)
        mDelegate->remove(true);
}

void UBGraphicsStrokesGroup::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
    // Never draw the rubber band, we draw our custom selection with the DelegateFrame
    QStyleOptionGraphicsItem styleOption = QStyleOptionGraphicsItem(*option);
    styleOption.state &= ~QStyle::State_Selected;

    QGraphicsItemGroup::paint(painter, &styleOption, widget);
}

QVariant UBGraphicsStrokesGroup::itemChange(GraphicsItemChange change, const QVariant &value)
{
    QVariant newValue = mDelegate->itemChange(change, value);
    return QGraphicsItemGroup::itemChange(change, newValue);
}


QPainterPath UBGraphicsStrokesGroup::shape () const
{
    QPainterPath path;

    if (isSelected())
    {
        path.addRect(boundingRect());
    }
    else
    {
        foreach(QGraphicsItem* item, childItems())
        {
            path.addPath(item->shape());
        } 
    }

    return path;
}