Add a way to have out of source shell integrations

Some platforms (especially non-desktop ones) may use a custom
Wayland shell extension, more tailored to the form factor than
the generic and desktoppy wl_shell or xdg_shell. Instead of stuffing
N protocol implementations in the QPA plugin use a plugin architecture
to allow them to live out of tree.
When creating a shell surface the QT_WAYLAND_SHELL_INTEGRATION env
variable will be checked, and if it points to a valid plugin that
will be used to create the shell surface, falling back to wl_shell
or xdg_shell if no plugin is specified.

Change-Id: I05019174bb915199dd726f5fdcc0385ef846e8de
Reviewed-by: Pier Luigi Fiorini <pierluigi.fiorini@gmail.com>
Reviewed-by: Philippe Coval <rzr@gna.org>
Reviewed-by: Jan Arne Petersen <jan.petersen@kdab.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>

1 files changed, 4 insertions, 13 deletions

diff --git a/src/client/qwaylandnativeinterface.cpp b/src/client/qwaylandnativeinterface.cpp
index e3d6fef4a..3d714c2fb 100644
--- a/src/client/qwaylandnativeinterface.cpp
+++ b/src/client/qwaylandnativeinterface.cpp
@@ -99,34 +99,25 @@ void *QWaylandNativeInterface::nativeResourceForScreen(const QByteArray &resourc
 QVariantMap QWaylandNativeInterface::windowProperties(QPlatformWindow *window) const
 {
     QWaylandWindow *waylandWindow = static_cast<QWaylandWindow *>(window);
-    if (QWaylandExtendedSurface *extendedWindow = waylandWindow->extendedWindow())
-        return extendedWindow->properties();
-    return QVariantMap();
+    return waylandWindow->properties();
 }
 
-
 QVariant QWaylandNativeInterface::windowProperty(QPlatformWindow *window, const QString &name) const
 {
     QWaylandWindow *waylandWindow = static_cast<QWaylandWindow *>(window);
-    if (QWaylandExtendedSurface *extendedWindow = waylandWindow->extendedWindow())
-        return extendedWindow->property(name);
-    return QVariant();
+    return waylandWindow->property(name);
 }
 
 QVariant QWaylandNativeInterface::windowProperty(QPlatformWindow *window, const QString &name, const QVariant &defaultValue) const
 {
     QWaylandWindow *waylandWindow = static_cast<QWaylandWindow *>(window);
-    if (QWaylandExtendedSurface *extendedWindow = waylandWindow->extendedWindow()) {
-        return extendedWindow->property(name,defaultValue);
-    }
-    return defaultValue;
+    return waylandWindow->property(name, defaultValue);
 }
 
 void QWaylandNativeInterface::setWindowProperty(QPlatformWindow *window, const QString &name, const QVariant &value)
 {
     QWaylandWindow *wlWindow = static_cast<QWaylandWindow*>(window);
-    if (QWaylandExtendedSurface *extendedWindow = wlWindow->extendedWindow())
-        extendedWindow->updateGenericProperty(name,value);
+    wlWindow->sendProperty(name, value);
 }
 
 void QWaylandNativeInterface::emitWindowPropertyChanged(QPlatformWindow *window, const QString &name)