1 files changed, 110 insertions, 0 deletions
diff --git a/tests/manual/embeddedwindows/main.cpp b/tests/manual/embeddedwindows/main.cpp
new file mode 100644
index 0000000000..e34c7206ea
--- /dev/null
+++ b/tests/manual/embeddedwindows/main.cpp
@@ -0,0 +1,110 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+#include <QtGui>
+
+#if QT_CONFIG(metal) || defined(Q_OS_WIN) || QT_CONFIG(xcb) || defined(ANDROID)
+#include "../../shared/nativewindow.h"
+#define HAVE_NATIVE_WINDOW
+#endif
+
+#include <QDebug>
+
+class TestWindow : public QRasterWindow
+{
+public:
+    using QRasterWindow::QRasterWindow;
+    TestWindow(const QBrush &brush) : m_brush(brush) {}
+
+protected:
+    void mousePressEvent(QMouseEvent *) override
+    {
+        m_pressed = true;
+        update();
+    }
+
+    void mouseReleaseEvent(QMouseEvent *) override
+    {
+        m_pressed = false;
+        update();
+    }
+
+    void paintEvent(QPaintEvent *) override
+    {
+        QPainter painter(this);
+        painter.setCompositionMode(QPainter::CompositionMode_Source);
+        if (!mask().isNull())
+            painter.setClipRegion(mask());
+        painter.fillRect(QRect(0, 0, width(), height()),
+            m_pressed ? QGradient(QGradient::JuicyPeach) : m_brush);
+    }
+
+private:
+    QBrush m_brush = QGradient(QGradient::DustyGrass);
+    bool m_pressed = false;
+};
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    TestWindow window{QGradient(QGradient::WinterNeva)};
+    window.resize(500, 500);
+
+    TestWindow *opaqueChildWindow = new TestWindow;
+    opaqueChildWindow->setParent(&window);
+    opaqueChildWindow->setGeometry(50, 50, 100, 100);
+    opaqueChildWindow->showNormal();
+
+    TestWindow *maskedChildWindow = new TestWindow;
+    maskedChildWindow->setParent(&window);
+    maskedChildWindow->setGeometry(200, 50, 100, 100);
+    maskedChildWindow->setMask(QRegion(0, 0, 100, 100, QRegion::Ellipse));
+    maskedChildWindow->showNormal();
+
+    static const QColor transparentGreen = QColor(0, 255, 0, 20);
+    TestWindow *transparentChildWindow = new TestWindow(transparentGreen);
+    // The default surface format of a platform may not include
+    // an alpha, so set it explicitly.
+    QSurfaceFormat format = transparentChildWindow->format();
+    format.setAlphaBufferSize(8);
+    transparentChildWindow->setFormat(format);
+    // FIXME: Windows requires this, even for child windows
+    transparentChildWindow->setFlag(Qt::FramelessWindowHint);
+    transparentChildWindow->setParent(&window);
+    transparentChildWindow->setGeometry(350, 50, 100, 100);
+    transparentChildWindow->showNormal();
+
+#if defined(HAVE_NATIVE_WINDOW)
+    NativeWindow nativeWindow;
+    if (QWindow *foreignWindow = QWindow::fromWinId(nativeWindow)) {
+        foreignWindow->setParent(&window);
+        foreignWindow->setGeometry(50, 200, 100, 100);
+        foreignWindow->showNormal();
+    }
+
+    NativeWindow maskedNativeWindow;
+    if (QWindow *foreignWindow = QWindow::fromWinId(maskedNativeWindow)) {
+        foreignWindow->setParent(&window);
+        foreignWindow->setGeometry(200, 200, 100, 100);
+        foreignWindow->setMask(QRegion(0, 0, 100, 100, QRegion::Ellipse));
+        foreignWindow->showNormal();
+    }
+
+    NativeWindow nativeParentWindow;
+    if (QWindow *foreignWindow = QWindow::fromWinId(nativeParentWindow)) {
+        foreignWindow->setParent(&window);
+        foreignWindow->setGeometry(50, 350, 100, 100);
+        foreignWindow->showNormal();
+
+        TestWindow *maskedChildWindowOfNativeWindow = new TestWindow;
+        maskedChildWindowOfNativeWindow->setParent(foreignWindow);
+        maskedChildWindowOfNativeWindow->setGeometry(25, 25, 50, 50);
+        maskedChildWindowOfNativeWindow->showNormal();
+    }
+#endif
+
+    window.show();
+
+    return app.exec();
+}