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-kwindowsystem/source/tests/icontest.cpp

@@ -0,0 +1,95 @@
+/*
+    This file is part of the KDE libraries
+    SPDX-FileCopyrightText: 2016 Martin Gräßlin <mgraesslin@kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-or-later
+*/
+#include "../src/platforms/xcb/netwm.h"
+#include <QApplication>
+#include <QCommandLineParser>
+#include <QHBoxLayout>
+#include <QIcon>
+#include <QLabel>
+#include <QVBoxLayout>
+#include <private/qtx11extras_p.h>
+
+#include <kwindowsystem.h>
+#include <kx11extras.h>
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+    QCommandLineParser parser;
+    parser.addPositionalArgument(QStringLiteral("WId"), QStringLiteral("window id for the window to take the icon from"), QStringLiteral("[WId]"));
+    parser.addHelpOption();
+    parser.process(app);
+
+    QWidget window;
+    QVBoxLayout *vbox = new QVBoxLayout(&window);
+
+    bool ok = false;
+    qulonglong id = parser.positionalArguments().first().toULongLong(&ok);
+    if (!ok) {
+        // try hex
+        id = parser.positionalArguments().first().toULongLong(&ok, 16);
+    }
+    if (!ok) {
+        return 1;
+    }
+    NETWinInfo info(QX11Info::connection(), id, QX11Info::appRootWindow(), NET::WMIcon, NET::WM2WindowClass | NET::WM2IconPixmap);
+    auto addIcons = [&window, vbox, &id, &info](const QString &name, int flag) {
+        QLabel *title = new QLabel(name, &window);
+        vbox->addWidget(title);
+        QIcon icons;
+        if (flag & KX11Extras::NETWM) {
+            const int *iconSizes = info.iconSizes();
+            int index = 0;
+            while (iconSizes[index] != 0 && iconSizes[index + 1] != 0) {
+                const int width = iconSizes[index++];
+                const int height = iconSizes[index++];
+                NETIcon ni = info.icon(width, height);
+                if (ni.data) {
+                    QImage img((uchar *)ni.data, (int)ni.size.width, (int)ni.size.height, QImage::Format_ARGB32);
+                    if (!img.isNull()) {
+                        icons.addPixmap(QPixmap::fromImage(img));
+                    }
+                }
+            }
+        }
+
+        if (flag & KX11Extras::WMHints) {
+            icons.addPixmap(KX11Extras::icon(id, 0, 0, false, KX11Extras::WMHints, &info));
+        }
+
+        if (flag & KX11Extras::ClassHint) {
+            icons = QIcon::fromTheme(QString::fromUtf8(info.windowClassClass()).toLower());
+        }
+        if (flag & KX11Extras::XApp) {
+            icons = QIcon::fromTheme(QLatin1String("xorg"));
+        }
+        if (icons.isNull()) {
+            return;
+        }
+        QHBoxLayout *layout = new QHBoxLayout();
+        const auto sizes = icons.availableSizes();
+        for (auto it = sizes.begin(); it != sizes.end(); ++it) {
+            const QSize &s = *it;
+            QVBoxLayout *v = new QVBoxLayout();
+            QLabel *l = new QLabel(QStringLiteral("%1/%2").arg(s.width()).arg(s.height()), &window);
+            v->addWidget(l);
+            QLabel *p = new QLabel(&window);
+            p->setPixmap(icons.pixmap(s));
+            v->addWidget(p);
+            layout->addLayout(v);
+        }
+        vbox->addLayout(layout);
+    };
+    addIcons(QStringLiteral("NetWM"), KX11Extras::NETWM);
+    addIcons(QStringLiteral("WMHints"), KX11Extras::WMHints);
+    addIcons(QStringLiteral("ClassHint"), KX11Extras::ClassHint);
+    addIcons(QStringLiteral("XApp"), KX11Extras::XApp);
+
+    window.show();
+
+    return app.exec();
+}