wasm: add support for drag into browser window

Drag and drop into the browser will work.
Drag and drop out of the browser will not.

Fixes: QTBUG-102242
Change-Id: Id9981ab6f9514535e1409bec18068790833a67a6
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>

1 files changed, 10 insertions, 1 deletions

diff --git a/src/plugins/platforms/wasm/qwasmintegration.cpp b/src/plugins/platforms/wasm/qwasmintegration.cpp
index c66ca4ce4a..c6bb7f98c9 100644
--- a/src/plugins/platforms/wasm/qwasmintegration.cpp
+++ b/src/plugins/platforms/wasm/qwasmintegration.cpp
@@ -57,7 +57,7 @@
 
 // this is where EGL headers are pulled in, make sure it is last
 #include "qwasmscreen.h"
-
+#include <private/qsimpledrag_p.h>
 using namespace emscripten;
 QT_BEGIN_NAMESPACE
 
@@ -176,6 +176,7 @@ QWasmIntegration::QWasmIntegration()
         visualViewport.call<void>("addEventListener", val("resize"),
                           val::module_property("qtResizeAllScreens"));
     }
+    m_drag = new QWasmDrag();
 }
 
 QWasmIntegration::~QWasmIntegration()
@@ -192,6 +193,7 @@ QWasmIntegration::~QWasmIntegration()
     delete m_desktopServices;
     if (m_platformInputContext)
         delete m_platformInputContext;
+    delete m_drag;
 
     for (const auto &elementAndScreen : m_screens)
         QWindowSystemInterface::handleScreenRemoved(elementAndScreen.second);
@@ -374,4 +376,11 @@ quint64 QWasmIntegration::getTimestamp()
     return emscripten_performance_now();
 }
 
+#if QT_CONFIG(draganddrop)
+QPlatformDrag *QWasmIntegration::drag() const
+{
+    return m_drag;
+}
+#endif // QT_CONFIG(draganddrop)
+
 QT_END_NAMESPACE