1 files changed, 11 insertions, 2 deletions
diff --git a/src/plugins/platforms/wasm/qwasmscreen.cpp b/src/plugins/platforms/wasm/qwasmscreen.cpp
index e536bc0ee3..d407111c2f 100644
--- a/src/plugins/platforms/wasm/qwasmscreen.cpp
+++ b/src/plugins/platforms/wasm/qwasmscreen.cpp
@@ -32,6 +32,8 @@
 #include "qwasmeventtranslator.h"
 #include "qwasmcompositor.h"
 #include "qwasmintegration.h"
+#include "qwasmstring.h"
+
 #include <emscripten/bind.h>
 #include <emscripten/val.h>
 
@@ -44,6 +46,7 @@
 #include <QtGui/qguiapplication.h>
 #include <private/qhighdpiscaling_p.h>
 
+using namespace emscripten;
 
 QT_BEGIN_NAMESPACE
 
@@ -182,12 +185,18 @@ void QWasmScreen::updateQScreenAndCanvasRenderSize()
     QSizeF cssSize(css_width, css_height);
 
     QSizeF canvasSize = cssSize * devicePixelRatio();
-    emscripten::val canvas = emscripten::val::global(canvasId.constData());
+    val document = val::global("document");
+    val canvas = document.call<val>("getElementById", QWasmString::fromQString(m_canvasId));
+
     canvas.set("width", canvasSize.width());
     canvas.set("height", canvasSize.height());
 
+    QPoint offset;
+    offset.setX(canvas["offsetTop"].as<int>());
+    offset.setY(canvas["offsetLeft"].as<int>());
+
     emscripten::val rect = canvas.call<emscripten::val>("getBoundingClientRect");
-    QPoint position(rect["left"].as<int>(), rect["top"].as<int>());
+    QPoint position(rect["left"].as<int>() - offset.x(), rect["top"].as<int>() - offset.y());
 
     setGeometry(QRect(position, cssSize.toSize()));
     m_compositor->redrawWindowContent();