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QGraphics2d [Interfaces] Components can implement this interface to define how they'd like to draw themselves. More... Classes struct   orca::QGraphics2dData   QGraphics2d command structure: tells how to paint something. More... interface   orca::QGraphics2dConsumer interface   orca::QGraphics2d   Access to the drawable entity. More... interface   orca::QGraphics2d   Access to the drawable entity. More... Detailed Description Components can implement this interface to define how they'd like to draw themselves. The interface is Qt-specific. It works like this: 1) The interface provider instantiates a QPicture, and paints to it. 2) The QPicture knows how to serialize itself. The interface provider serializes the QPicture into the QGraphics2dData object. 3) A component that knows how to paint things connects and gets the QGraphics2dData object, de-serializes it into a QPicture, and paints it. This allows extremely general painting: the interface provider can use all of Qt's power to paint into the QPicture. Example An example of how an interface provider would draw itself: // // Set up the QPicture // QPicture qpic; QPainter p; p.begin( &qpic ); { // // Painting code goes here: paint to the painter... // } p.end(); // // Then stick it in the orca object // orca::QGraphics2dDataPtr data = new QGraphics2dData; data->z = [1..12]; data->isInGlobalCS = {true|false}; data->qpicture.resize( qpic.size() ); memcpy( &(data->qpicture[0]), qpic.data(), qpic.size() );

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