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OpenBoard/src/frameworks/UBCoreGraphicsScene.cpp

86 lines
2.2 KiB

/*
14 years ago
* 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 3 of the License, or
* (at your option) any later version.
*
14 years ago
* 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 "core/memcheck.h"
#include "domain/UBGraphicsAudioItem.h"
#include "domain/UBGraphicsVideoItem.h"
#include "domain/UBGraphicsMediaItem.h"
UBCoreGraphicsScene::UBCoreGraphicsScene(QObject * parent)
: QGraphicsScene ( parent )
{
//NOOP
}
UBCoreGraphicsScene::~UBCoreGraphicsScene()
{
//we must delete removed items that are no more in any scene
foreach (const QGraphicsItem* item, mItemsToDelete)
{
if (item->scene()==NULL || item->scene() == this)
{
delete item;
}
}
}
void UBCoreGraphicsScene::addItem(QGraphicsItem* item)
{
mItemsToDelete << item;
if (item->scene() != this)
QGraphicsScene::addItem(item);
}
void UBCoreGraphicsScene::removeItem(QGraphicsItem* item, bool forceDelete)
{
QGraphicsScene::removeItem(item);
if (forceDelete)
{
mItemsToDelete.remove(item);
delete item;
}
}
bool UBCoreGraphicsScene::deleteItem(QGraphicsItem* item)
{
if(mItemsToDelete.contains(item))
{
UBGraphicsItem* item_casted = 0;
switch (item->type())
{
case UBGraphicsAudioItem::Type:
item_casted = dynamic_cast<UBGraphicsAudioItem*>(item);
break;
case UBGraphicsVideoItem::Type:
item_casted = dynamic_cast<UBGraphicsVideoItem*>(item);
break;
}
if (0 != item_casted)
item_casted->clearSource();
mItemsToDelete.remove(item);
delete item;
return true;
}
else
return false;
}