Fusion: eliminate internal IDs to enable deferred execution

Task-number: QTBUG-65341
Change-Id: I3bfd36f1d1e275eb507184c376599aa7751a069e
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 20 insertions, 1 deletions

diff --git a/src/imports/controls/fusion/qquickfusionbusyindicator.cpp b/src/imports/controls/fusion/qquickfusionbusyindicator.cpp
index 7254b7b7..f5c92010 100644
--- a/src/imports/controls/fusion/qquickfusionbusyindicator.cpp
+++ b/src/imports/controls/fusion/qquickfusionbusyindicator.cpp
@@ -59,11 +59,22 @@ void QQuickFusionBusyIndicator::setColor(const QColor &color)
     update();
 }
 
+bool QQuickFusionBusyIndicator::isRunning() const
+{
+    return isVisible();
+}
+
+void QQuickFusionBusyIndicator::setRunning(bool running)
+{
+    if (running)
+        setVisible(true);
+}
+
 void QQuickFusionBusyIndicator::paint(QPainter *painter)
 {
     const qreal w = width();
     const qreal h = height();
-    if (w <= 0 || h <= 0 || !isVisible())
+    if (w <= 0 || h <= 0 || !isRunning())
         return;
 
     const qreal sz = qMin(w, h);
@@ -87,4 +98,12 @@ void QQuickFusionBusyIndicator::paint(QPainter *painter)
     painter->drawArc(bounds, 0, 20 * 16);
 }
 
+void QQuickFusionBusyIndicator::itemChange(ItemChange change, const ItemChangeData &data)
+{
+    QQuickPaintedItem::itemChange(change, data);
+
+    if (change == ItemOpacityHasChanged && qFuzzyIsNull(data.realValue))
+        setVisible(false);
+}
+
 QT_END_NAMESPACE