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/*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "UBCoreGraphicsScene.h"
#include "domain/UBGraphicsMediaItem.h"
#include "domain/UBGraphicsWidgetItem.h"
#include "domain/UBGraphicsGroupContainerItem.h"
#include "core/memcheck.h"
UBCoreGraphicsScene::UBCoreGraphicsScene(QObject * parent)
: QGraphicsScene ( parent )
{
//NOOP
}
UBCoreGraphicsScene::~UBCoreGraphicsScene()
{
//we must delete removed items that are no more in any scene
//at groups deleting some items can be added to mItemsToDelete, so we need to use iterators.
if (mItemsToDelete.count())
{
QSet<QGraphicsItem *>::iterator it = mItemsToDelete.begin();
QGraphicsItem* item = *it;
do
{
item = *it;
if (item && (item->scene() == NULL || item->scene() == this))
{
mItemsToDelete.remove(*it);
delete item;
}
it = mItemsToDelete.begin();
}while(mItemsToDelete.count());
}
}
void UBCoreGraphicsScene::addItem(QGraphicsItem* item)
{
if (item->type() == UBGraphicsGroupContainerItem::Type && item->childItems().count()) {
foreach (QGraphicsItem *curItem, item->childItems()) {
removeItemFromDeletion(curItem);
}
}
if (item->scene() != this)
QGraphicsScene::addItem(item);
}
void UBCoreGraphicsScene::removeItem(QGraphicsItem* item, bool forceDelete)
{
QGraphicsScene::removeItem(item);
if (forceDelete)
{
deleteItem(item);
}
}
bool UBCoreGraphicsScene::deleteItem(QGraphicsItem* item)
{
if(mItemsToDelete.contains(item))
{
UBGraphicsItem* item_casted = 0;
switch (item->type())
{
case UBGraphicsMediaItem::Type:
item_casted = dynamic_cast<UBGraphicsMediaItem*>(item);
break;
case UBGraphicsW3CWidgetItem::Type:
item_casted = dynamic_cast<UBGraphicsWidgetItem*>(item);
break;
}
if (0 != item_casted)
item_casted->clearSource();
mItemsToDelete.remove(item);
delete item;
item = 0;
return true;
}
else
return false;
}
void UBCoreGraphicsScene::removeItemFromDeletion(QGraphicsItem *item)
{
if(NULL != item){
mItemsToDelete.remove(item);
}
}
void UBCoreGraphicsScene::addItemToDeletion(QGraphicsItem *item)
{
if (item) {
mItemsToDelete.insert(item);
}
}