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-rw-r--r--examples/declarative/toys/dynamicscene/qml/itemCreation.js65
1 files changed, 65 insertions, 0 deletions
diff --git a/examples/declarative/toys/dynamicscene/qml/itemCreation.js b/examples/declarative/toys/dynamicscene/qml/itemCreation.js
new file mode 100644
index 0000000..59750f3
--- /dev/null
+++ b/examples/declarative/toys/dynamicscene/qml/itemCreation.js
@@ -0,0 +1,65 @@
+var itemComponent = null;
+var draggedItem = null;
+var startingMouse;
+var posnInWindow;
+
+function startDrag(mouse)
+{
+ posnInWindow = paletteItem.mapToItem(null, 0, 0);
+ startingMouse = { x: mouse.x, y: mouse.y }
+ loadComponent();
+}
+
+//Creation is split into two functions due to an asynchronous wait while
+//possible external files are loaded.
+
+function loadComponent() {
+ if (itemComponent != null) { // component has been previously loaded
+ createItem();
+ return;
+ }
+
+ itemComponent = Qt.createComponent(paletteItem.componentFile);
+ if (itemComponent.status == Component.Loading) //Depending on the content, it can be ready or error immediately
+ component.statusChanged.connect(createItem);
+ else
+ createItem();
+}
+
+function createItem() {
+ if (itemComponent.status == Component.Ready && draggedItem == null) {
+ draggedItem = itemComponent.createObject(window);
+ draggedItem.image = paletteItem.image;
+ draggedItem.x = posnInWindow.x;
+ draggedItem.y = posnInWindow.y;
+ draggedItem.z = 3; // make sure created item is above the ground layer
+ } else if (itemComponent.status == Component.Error) {
+ draggedItem = null;
+ console.log("error creating component");
+ console.log(component.errorsString());
+ }
+}
+
+function continueDrag(mouse)
+{
+ if (draggedItem == null)
+ return;
+
+ draggedItem.x = mouse.x + posnInWindow.x - startingMouse.x;
+ draggedItem.y = mouse.y + posnInWindow.y - startingMouse.y;
+}
+
+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.created = true;
+ draggedItem = null;
+ }
+}
+