Copy - Paste QGraphicsItem on QGraphicsScene

[pran]

Hi All,

I am developing a graphics editor where I draw a polygon on the QGraphicsScene from a polygon class derived from QGraphicsItem. I use the painter->drawLine() to connect all the points to draw the polygon in the paint().

The co-ordinates are saved in my struct which has other properties in addition to the points. Now I need to copy and paste the polygon on the scene. I am picking up bits and pieces of QClipboard, QMimeData and QVariant, but I am yet to figure how best I can utilized these classes for my purpose. Am I heading in the right direction? Some pointers will be really helpful.

Thanks in advance.

[pran]

Ok guys, I managed to figure out how this could be done.

Implemented the keyPressEvent and handled as below

if (pKeyEvent->key() == Qt::Key_C && pKeyEvent->modifiers() & Qt::ControlModifier)
{
           listCopiedItems =  this->selectedItems();
}
 
 
if (pKeyEvent->key() == Qt::Key_V && pKeyEvent->modifiers() & Qt::ControlModifier)
{
           for(int i=0; i< listCopiedItems.count(); i++)
           {
              //the same implementation I did to construct the original item during creation after taking the co-ordinates from the original and did a setPos of the item to paste it with a small offset from the original item
           }
}

if (pKeyEvent->key() == Qt::Key_C && pKeyEvent->modifiers() & Qt::ControlModifier)
{
           listCopiedItems =  this->selectedItems();
}


if (pKeyEvent->key() == Qt::Key_V && pKeyEvent->modifiers() & Qt::ControlModifier)
{
           for(int i=0; i< listCopiedItems.count(); i++)
           {
              //the same implementation I did to construct the original item during creation after taking the co-ordinates from the original and did a setPos of the item to paste it with a small offset from the original item
           }
}

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Thanks everyone who tried to think about this.

cheers!

[wayfaerer]

That works, but I believe using QKeySequence would be a little better, e.g., QKeySequence::Cut, QKeySequence::Copy, and QKeySequence::Paste.