1 files changed, 47 insertions, 0 deletions
diff --git a/src/plugins/platforms/windows/qwindowsiconengine.h b/src/plugins/platforms/windows/qwindowsiconengine.h
new file mode 100644
index 0000000000..3c6cbddb8b
--- /dev/null
+++ b/src/plugins/platforms/windows/qwindowsiconengine.h
@@ -0,0 +1,47 @@
+// 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
+
+#ifndef QWINDOWSICONENGINE_H
+#define QWINDOWSICONENGINE_H
+
+#include <QtCore/qt_windows.h>
+
+#include <QtGui/qfont.h>
+#include <QtGui/qiconengine.h>
+
+QT_BEGIN_NAMESPACE
+
+class QWindowsIconEngine : public QIconEngine
+{
+public:
+    QWindowsIconEngine(const QString &iconName);
+    ~QWindowsIconEngine();
+    QIconEngine *clone() const override;
+    QString key() const override;
+    QString iconName() override;
+    bool isNull() override;
+
+    QList<QSize> availableSizes(QIcon::Mode, QIcon::State) override;
+    QSize actualSize(const QSize &size, QIcon::Mode mode, QIcon::State state) override;
+    QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state) override;
+    QPixmap scaledPixmap(const QSize &size, QIcon::Mode mode, QIcon::State state, qreal scale) override;
+    void paint(QPainter *painter, const QRect &rect, QIcon::Mode mode, QIcon::State state) override;
+
+private:
+    static constexpr quint64 calculateCacheKey(QIcon::Mode mode, QIcon::State state)
+    {
+        return (quint64(mode) << 32) | state;
+    }
+
+    QString glyphs() const;
+
+    const QString m_iconName;
+    const QFont m_iconFont;
+    const QString m_glyphs;
+    mutable QPixmap m_pixmap;
+    mutable quint64 m_cacheKey = {};
+};
+
+QT_END_NAMESPACE
+
+#endif // QWINDOWSICONENGINE_H