Add the toDOMRect/fromDOMRect functions to QRectF

These are very helpful when converting to and from DOMRect.

Change-Id: I4a7fc6318f45bed8e2b82fd5d6ec174dc1762326
Fixes: QTBUG-107740
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

1 files changed, 45 insertions, 0 deletions

diff --git a/src/corelib/kernel/qcore_wasm.cpp b/src/corelib/kernel/qcore_wasm.cpp
new file mode 100644
index 0000000000..5c8fac59b0
--- /dev/null
+++ b/src/corelib/kernel/qcore_wasm.cpp
@@ -0,0 +1,45 @@
+// Copyright (C) 2022 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 <QtCore/qrect.h>
+
+#include <emscripten/val.h>
+
+#if !defined(Q_OS_WASM)
+static_assert(false, "This is a wasm-only file.");
+#endif // !defined(Q_OS_WASM)
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    Converts the DOMRect (https://www.w3.org/TR/geometry-1/) \a domRect to QRectF. The behavior is
+    undefined if the provided parameter is not a DOMRect.
+
+    \since 6.5
+    \ingroup platform-type-conversions
+
+    \sa toDOMRect()
+*/
+QRectF QRectF::fromDOMRect(emscripten::val domRect)
+{
+    Q_ASSERT_X(domRect["constructor"]["name"].as<std::string>() == "DOMRect", Q_FUNC_INFO,
+               "Passed object is not a DOMRect");
+
+    return QRectF(domRect["left"].as<qreal>(), domRect["top"].as<qreal>(),
+                  domRect["width"].as<qreal>(), domRect["height"].as<qreal>());
+}
+
+/*!
+    Converts this object to a DOMRect (https://www.w3.org/TR/geometry-1/).
+
+    \since 6.5
+    \ingroup platform-type-conversions
+
+    \sa fromDOMRect()
+*/
+emscripten::val QRectF::toDOMRect() const
+{
+    return emscripten::val::global("DOMRect").new_(left(), top(), width(), height());
+}
+
+QT_END_NAMESPACE