1 files changed, 70 insertions, 0 deletions
diff --git a/src/plugins/platforms/android/androidwindowembedding.cpp b/src/plugins/platforms/android/androidwindowembedding.cpp
new file mode 100644
index 0000000000..65dabcac66
--- /dev/null
+++ b/src/plugins/platforms/android/androidwindowembedding.cpp
@@ -0,0 +1,70 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#include "androidwindowembedding.h"
+
+#include <QtCore/qcoreapplication.h>
+#include <QtCore/qjnienvironment.h>
+#include <QtCore/qjniobject.h>
+#include <QtCore/qjnitypes.h>
+#include <QtGui/qwindow.h>
+
+QT_BEGIN_NAMESPACE
+
+Q_DECLARE_JNI_CLASS(QtView, "org/qtproject/qt/android/QtView");
+
+namespace QtAndroidWindowEmbedding {
+    void createRootWindow(JNIEnv *, jclass, QtJniTypes::View rootView,
+                          jint x, jint y, jint width, jint height)
+    {
+        // QWindow should be constructed on the Qt thread rather than directly in the caller thread
+        // To avoid hitting checkReceiverThread assert in QCoreApplication::doNotify
+        QMetaObject::invokeMethod(qApp, [rootView, x, y, width, height] {
+            QWindow *parentWindow = QWindow::fromWinId(reinterpret_cast<WId>(rootView.object()));
+            parentWindow->setGeometry(x, y, width, height);
+            rootView.callMethod<void>("createWindow", reinterpret_cast<jlong>(parentWindow));
+        });
+    }
+
+    void deleteWindow(JNIEnv *, jclass, jlong windowRef)
+    {
+        QWindow *window = reinterpret_cast<QWindow*>(windowRef);
+        window->deleteLater();
+    }
+
+    void setWindowVisible(JNIEnv *, jclass, jlong windowRef, jboolean visible)
+    {
+        QMetaObject::invokeMethod(qApp, [windowRef, visible] {
+            QWindow *window = reinterpret_cast<QWindow*>(windowRef);
+            if (visible) {
+                window->showNormal();
+                if (!window->parent()->isVisible())
+                    window->parent()->showNormal();
+            } else {
+                window->hide();
+            }
+        });
+    }
+
+    void resizeWindow(JNIEnv *, jclass, jlong windowRef, jint x, jint y, jint width, jint height)
+    {
+        QMetaObject::invokeMethod(qApp, [windowRef, x, y, width, height] {
+            QWindow *window = reinterpret_cast<QWindow*>(windowRef);
+            QWindow *parent = window->parent();
+            if (parent)
+                parent->setGeometry(x, y, width, height);
+            window->setGeometry(0, 0, width, height);
+        });
+    }
+
+    bool registerNatives(QJniEnvironment& env) {
+        return env.registerNativeMethods(
+                QtJniTypes::Traits<QtJniTypes::QtView>::className(),
+                { Q_JNI_NATIVE_SCOPED_METHOD(createRootWindow, QtAndroidWindowEmbedding),
+                  Q_JNI_NATIVE_SCOPED_METHOD(deleteWindow, QtAndroidWindowEmbedding),
+                  Q_JNI_NATIVE_SCOPED_METHOD(setWindowVisible, QtAndroidWindowEmbedding),
+                  Q_JNI_NATIVE_SCOPED_METHOD(resizeWindow, QtAndroidWindowEmbedding) });
+    }
+}
+
+QT_END_NAMESPACE