Technical notes on gear creation

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jukea edited this page Jan 15, 2013 · 11 revisions

Gear added by GUI drag&drop. Code flow analysis starting from the DropEvent:

SchemaEditor::dropEvent
| SchemaEditor::addGear(..)
| | SchemaGui::addGear(..)
| | | Gear* gear = GearMaker::makeGear(fullname);
| | | | GearInfo *gearInfo = findGearInfo(fullName);
| | | | thegear = gearInfo->createGearInstance();
| | | | thegear->init();
| | | | | (gear::)internalInit();
| | | | GearInfo *gearInfo = findGearInfo(fullName);
| | | Schema::addGear(gear)
| | | | gear.name(mangleUniqueGearName(gear.name()))
| | | | gear.parentSchema(*this);
| | | | emit gearAdded(*this, gear);
| | | Engine::onGearAdded
| | | ?

Notes :

Most events should be handled by QGraphicsScene (SchemaGui) directly, not bw QGraphicsView (SceneEditor). This is an unnecessary proxy

--> prePlay vs internalInit … what's the difference ?