Fix the compositor test

Output handling in the compositor changed, so update the test
accordingly. As a side effect we now send an additional
wl_output.scale event, so have the client handle it.
Also the mapping between wayland's and QImage's format changed
so make it succeed again.

Change-Id: I66d32725c54d93ca1512a6a0ddaf466f58984afc
Reviewed-by: Robin Burchell <robin.burchell@viroteck.net>

tests/auto/compositor/mockclient.cpp

@@ -83,7 +83,8 @@ MockClient::MockClient()
 const wl_output_listener MockClient::outputListener = {
     MockClient::outputGeometryEvent,
     MockClient::outputModeEvent,
-    MockClient::outputDone
+    MockClient::outputDone,
+    MockClient::outputScale
 };
 
 MockClient::~MockClient()
@@ -111,6 +112,11 @@ void MockClient::outputDone(void *, wl_output *)
 
 }
 
+void MockClient::outputScale(void *, wl_output *, int)
+{
+
+}
+
 void MockClient::readEvents()
 {
     wl_display_dispatch(display);
@@ -185,7 +191,7 @@ ShmBuffer::ShmBuffer(const QSize &size, wl_shm *shm)
         return;
     }
 
-    image = QImage(static_cast<uchar *>(data), size.width(), size.height(), stride, QImage::Format_ARGB32_Premultiplied);
+    image = QImage(static_cast<uchar *>(data), size.width(), size.height(), stride, QImage::Format_ARGB32);
     shm_pool = wl_shm_create_pool(shm,fd,alloc);
     handle = wl_shm_pool_create_buffer(shm_pool,0, size.width(), size.height(),
                                    stride, WL_SHM_FORMAT_ARGB8888);

tests/auto/compositor/mockclient.h

@@ -101,6 +101,7 @@ private:
                                 int height,
                                 int refresh);
     static void outputDone(void *data, wl_output *output);
+    static void outputScale(void *data, wl_output *output, int factor);
 
     void handleGlobal(uint32_t id, const QByteArray &interface);
 

tests/auto/compositor/testcompositor.cpp

@@ -35,6 +35,7 @@
 
 TestCompositor::TestCompositor(QWaylandCompositor::ExtensionFlag flags) : QWaylandCompositor(0, flags)
 {
+    createOutput(0, "", "");
     addDefaultShell();
 }