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diff --git a/src/plugins/platforms/wasm/qwasmwindow.h b/src/plugins/platforms/wasm/qwasmwindow.h
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+++ b/src/plugins/platforms/wasm/qwasmwindow.h
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+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWASMWINDOW_H
+#define QWASMWINDOW_H
+
+#include "qwasmintegration.h"
+#include <qpa/qplatformwindow.h>
+#include <emscripten/html5.h>
+#include "qwasmbackingstore.h"
+#include "qwasmscreen.h"
+#include "qwasmcompositor.h"
+
+QT_BEGIN_NAMESPACE
+
+class QWasmCompositor;
+
+class QWasmWindow : public QPlatformWindow
+{
+public:
+    enum ResizeMode {
+        ResizeNone,
+        ResizeTopLeft,
+        ResizeTop,
+        ResizeTopRight,
+        ResizeRight,
+        ResizeBottomRight,
+        ResizeBottom,
+        ResizeBottomLeft,
+        ResizeLeft
+    };
+
+    QWasmWindow(QWindow *w, QWasmCompositor *compositor, QWasmBackingStore *backingStore);
+    ~QWasmWindow();
+
+    void initialize() override;
+
+    void setGeometry(const QRect &) override;
+    void setVisible(bool visible) override;
+    QMargins frameMargins() const override;
+
+    WId winId() const override;
+
+    void propagateSizeHints() override;
+    void raise() override;
+    void lower() override;
+    QRect normalGeometry() const override;
+    qreal devicePixelRatio() const override;
+    void requestUpdate() override;
+
+    QWasmScreen *platformScreen() const;
+    void setBackingStore(QWasmBackingStore *store) { m_backingStore = store; }
+    QWasmBackingStore *backingStore() const { return m_backingStore; }
+    QWindow *window() const { return m_window; }
+
+    void injectMousePressed(const QPoint &local, const QPoint &global,
+                            Qt::MouseButton button, Qt::KeyboardModifiers mods);
+    void injectMouseReleased(const QPoint &local, const QPoint &global,
+                            Qt::MouseButton button, Qt::KeyboardModifiers mods);
+
+    int titleHeight() const;
+    int borderWidth() const;
+    QRegion titleGeometry() const;
+    QRegion resizeRegion() const;
+    bool isPointOnTitle(QPoint point) const;
+    bool isPointOnResizeRegion(QPoint point) const;
+    ResizeMode resizeModeAtPoint(QPoint point) const;
+    QRect maxButtonRect() const;
+    QRect minButtonRect() const;
+    QRect closeButtonRect() const;
+    QRect sysMenuRect() const;
+    QRect normButtonRect() const;
+    QRegion titleControlRegion() const;
+    QWasmCompositor::SubControls activeSubControl() const;
+
+    void setWindowState(Qt::WindowStates state) override;
+    bool setKeyboardGrabEnabled(bool) override { return false; }
+    bool setMouseGrabEnabled(bool) override { return false; }
+
+protected:
+    void invalidate();
+
+protected:
+    friend class QWasmScreen;
+
+    QWindow* m_window = nullptr;
+    QWasmCompositor *m_compositor = nullptr;
+    QWasmBackingStore *m_backingStore = nullptr;
+    QRect m_normalGeometry {0, 0, 0 ,0};
+
+    Qt::WindowState m_windowState = Qt::WindowNoState;
+    QWasmCompositor::SubControls m_activeControl = QWasmCompositor::SC_None;
+    WId m_winid = 0;
+    bool m_hasTitle = false;
+    bool m_needsCompositor = false;
+};
+QT_END_NAMESPACE
+#endif // QWASMWINDOW_H