Enable Qt WebEngine on Wayland

The native resource getters that are supported by eglfs will have to be
supported by the wayland platform plugin too. (on wayland-egl at least)

Change-Id: Ibbab649c04785dbde177342c45b9bc6f1edd954d
Reviewed-by: Andy Nichols <andy.nichols@theqtcompany.com>
Reviewed-by: Andras Becsi <andras.becsi@theqtcompany.com>

src/plugins/platforms/wayland/hardwareintegration/qwaylandclientbufferintegration_p.h

@@ -69,6 +69,14 @@ public:
 
     virtual QWaylandWindow *createEglWindow(QWindow *window) = 0;
     virtual QPlatformOpenGLContext *createPlatformOpenGLContext(const QSurfaceFormat &glFormat, QPlatformOpenGLContext *share) const = 0;
+
+    enum NativeResource {
+        EglDisplay,
+        EglConfig,
+        EglContext
+    };
+    virtual void *nativeResource(NativeResource /*resource*/) { return Q_NULLPTR; }
+    virtual void *nativeResourceForContext(NativeResource /*resource*/, QPlatformOpenGLContext */*context*/) { return Q_NULLPTR; }
 };
 
 QT_END_NAMESPACE

src/plugins/platforms/wayland/qwaylandnativeinterface.cpp

@@ -49,6 +49,7 @@
 #include "qwaylandscreen_p.h"
 #include <QtGui/private/qguiapplication_p.h>
 #include <QtGui/QScreen>
+#include <QtWaylandClient/private/qwaylandclientbufferintegration_p.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -61,13 +62,16 @@ void *QWaylandNativeInterface::nativeResourceForIntegration(const QByteArray &re
 {
     QByteArray lowerCaseResource = resourceString.toLower();
 
-    if (lowerCaseResource == "display" || lowerCaseResource == "wl_display")
+    if (lowerCaseResource == "display" || lowerCaseResource == "wl_display" || lowerCaseResource == "nativedisplay")
         return m_integration->display()->wl_display();
     if (lowerCaseResource == "compositor")
         return const_cast<wl_compositor *>(m_integration->display()->wl_compositor());
     if (lowerCaseResource == "server_buffer_integration")
         return m_integration->serverBufferIntegration();
 
+    if (lowerCaseResource == "egldisplay" && m_integration->clientBufferIntegration())
+        return m_integration->clientBufferIntegration()->nativeResource(QWaylandClientBufferIntegration::EglDisplay);
+
     return 0;
 }
 
@@ -96,6 +100,22 @@ void *QWaylandNativeInterface::nativeResourceForScreen(const QByteArray &resourc
     return NULL;
 }
 
+void *QWaylandNativeInterface::nativeResourceForContext(const QByteArray &resource, QOpenGLContext *context)
+{
+    QByteArray lowerCaseResource = resource.toLower();
+
+    if (lowerCaseResource == "eglconfig" && m_integration->clientBufferIntegration())
+        return m_integration->clientBufferIntegration()->nativeResourceForContext(QWaylandClientBufferIntegration::EglConfig, context->handle());
+
+    if (lowerCaseResource == "eglcontext" && m_integration->clientBufferIntegration())
+        return m_integration->clientBufferIntegration()->nativeResourceForContext(QWaylandClientBufferIntegration::EglContext, context->handle());
+
+    if (lowerCaseResource == "egldisplay" && m_integration->clientBufferIntegration())
+        return m_integration->clientBufferIntegration()->nativeResourceForContext(QWaylandClientBufferIntegration::EglDisplay, context->handle());
+
+    return 0;
+}
+
 QVariantMap QWaylandNativeInterface::windowProperties(QPlatformWindow *window) const
 {
     QWaylandWindow *waylandWindow = static_cast<QWaylandWindow *>(window);

src/plugins/platforms/wayland/qwaylandnativeinterface_p.h

@@ -61,6 +61,7 @@ public:
 				  QWindow *window);
     void *nativeResourceForScreen(const QByteArray &resourceString,
                                   QScreen *screen);
+    void *nativeResourceForContext(const QByteArray &resource, QOpenGLContext *context);
 
     QVariantMap windowProperties(QPlatformWindow *window) const;
     QVariant windowProperty(QPlatformWindow *window, const QString &name) const;