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var itemComponent = null;
var draggedItem = null;
var startingMouse;
var startingZ;
//Until QT-2385 is resolved we need to convert to scene coordinates manually
var xOffset;
var yOffset;
function setSceneOffset()
{
xOffset = 0;
yOffset = 0;
var p = itemButton;
while(p != window){
xOffset += p.x;
yOffset += p.y;
p = p.parent;
}
}
function startDrag(mouse)
{
setSceneOffset();
startingMouse = mouse;
loadComponent();
}
//Creation is split into two functions due to an asyncronous wait while
//possible external files are loaded.
function loadComponent() {
if (itemComponent != null) //Already loaded the component
createItem();
itemComponent = createComponent(itemButton.file);
if(itemComponent.isLoading){
component.statusChanged.connect(finishCreation);
}else{//Depending on the content, it can be ready or error immediately
createItem();
}
}
function createItem() {
if (itemComponent.isReady && draggedItem == null) {
draggedItem = itemComponent.createObject();
draggedItem.parent = window;
draggedItem.image = itemButton.image;
draggedItem.x = startingMouse.x + xOffset;
draggedItem.y = startingMouse.y + yOffset;
startingZ = draggedItem.z;
draggedItem.z = 4;//On top
} else if (itemComponent.isError) {
draggedItem = null;
print("error creating component");
print(component.errorsString());
}
}
function moveDrag(mouse)
{
if(draggedItem == null)
return;
draggedItem.x = mouse.x + xOffset;
draggedItem.y = mouse.y + yOffset;
}
function endDrag(mouse)
{
if(draggedItem == null)
return;
if(draggedItem.x + draggedItem.width > toolbox.x){ //Don't drop it in the toolbox
draggedItem.destroy();
draggedItem = null;
}else{
draggedItem.z = startingZ;
draggedItem.created = true;
draggedItem = null;
}
}
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