Advance Wayland and KDE package bring-up

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

local/recipes/kde/kf6-kwidgetsaddons/source/src/kbusyindicatorwidget.cpp

@@ -0,0 +1,104 @@
+/*
+    SPDX-FileCopyrightText: 2019 Harald Sitter <sitter@kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
+*/
+
+#include "kbusyindicatorwidget.h"
+
+#include <QApplication>
+#include <QIcon>
+#include <QPainter>
+#include <QResizeEvent>
+#include <QStyle>
+#include <QVariantAnimation>
+
+class KBusyIndicatorWidgetPrivate
+{
+public:
+    KBusyIndicatorWidgetPrivate(KBusyIndicatorWidget *parent)
+        : q(parent)
+    {
+        animation.setLoopCount(-1);
+        animation.setDuration(2000);
+        animation.setStartValue(0);
+        animation.setEndValue(360);
+        QObject::connect(&animation, &QVariantAnimation::valueChanged, q, [this](QVariant value) {
+            rotation = value.toReal();
+            q->update(); // repaint new rotation
+        });
+    }
+
+    KBusyIndicatorWidget *const q;
+    QVariantAnimation animation;
+    QIcon icon = QIcon::fromTheme(QStringLiteral("view-refresh"));
+    qreal rotation = 0;
+    QPointF paintCenter;
+};
+
+KBusyIndicatorWidget::KBusyIndicatorWidget(QWidget *parent)
+    : QWidget(parent)
+    , d(new KBusyIndicatorWidgetPrivate(this))
+{
+}
+
+KBusyIndicatorWidget::~KBusyIndicatorWidget() = default;
+
+QSize KBusyIndicatorWidget::minimumSizeHint() const
+{
+    const auto extent = QApplication::style()->pixelMetric(QStyle::PM_SmallIconSize);
+    return QSize(extent, extent);
+}
+
+void KBusyIndicatorWidget::start()
+{
+    d->animation.start();
+}
+
+void KBusyIndicatorWidget::stop()
+{
+    if (d->animation.state() == QAbstractAnimation::Running) // avoid warning if never started yet
+        d->animation.pause();
+}
+
+void KBusyIndicatorWidget::showEvent(QShowEvent *event)
+{
+    QWidget::showEvent(event);
+    start();
+}
+
+void KBusyIndicatorWidget::hideEvent(QHideEvent *event)
+{
+    QWidget::hideEvent(event);
+    stop();
+}
+
+void KBusyIndicatorWidget::resizeEvent(QResizeEvent *event)
+{
+    QWidget::resizeEvent(event);
+    d->paintCenter = QPointF(event->size().width() / 2.0, //
+                             event->size().height() / 2.0);
+}
+
+void KBusyIndicatorWidget::paintEvent(QPaintEvent *)
+{
+    QPainter painter(this);
+    painter.setRenderHint(QPainter::SmoothPixmapTransform);
+
+    // Rotate around the center and then reset back to origin for icon painting.
+    painter.translate(d->paintCenter);
+    painter.rotate(d->rotation);
+    painter.translate(-d->paintCenter);
+
+    d->icon.paint(&painter, rect());
+}
+
+bool KBusyIndicatorWidget::event(QEvent *event)
+{
+    // Only overridden to be flexible WRT binary compatible in the future.
+    // Overriding later has potential to change the call going through
+    // the vtable or not.
+    return QWidget::event(event);
+}
+
+#include "moc_kbusyindicatorwidget.cpp"