Implemented refresh rate support.

Implements QWaylandScreen::refreshRate() based on the wl_output mode
information we get from the compositor.

In the compositor, adds API to override the refresh rate, with the
default set to whatever QScreen reports on the compositor-side.

Change-Id: I5f5175f2498940875c6ec68d29d25cf5993a1e65
Reviewed-by: Laszlo Agocs <laszlo.p.agocs@nokia.com>

1 files changed, 8 insertions, 7 deletions

diff --git a/src/plugins/platforms/wayland/qwaylanddisplay.cpp b/src/plugins/platforms/wayland/qwaylanddisplay.cpp
index be8a09678..d0ae002fe 100644
--- a/src/plugins/platforms/wayland/qwaylanddisplay.cpp
+++ b/src/plugins/platforms/wayland/qwaylanddisplay.cpp
@@ -234,18 +234,19 @@ void QWaylandDisplay::outputHandleGeometry(void *data,
 }
 
 void QWaylandDisplay::mode(void *data,
-             struct wl_output *wl_output,
+             struct wl_output *output,
              uint32_t flags,
              int width,
              int height,
              int refresh)
 {
-    Q_UNUSED(data);
-    Q_UNUSED(wl_output);
-    Q_UNUSED(flags);
-    Q_UNUSED(width);
-    Q_UNUSED(height);
-    Q_UNUSED(refresh);
+    QWaylandDisplay *waylandDisplay = static_cast<QWaylandDisplay *>(data);
+
+    if (flags & WL_OUTPUT_MODE_CURRENT) {
+        QWaylandScreen *screen = waylandDisplay->screenForOutput(output);
+        if (screen)
+            screen->handleMode(QSize(width, height), refresh);
+    }
 }
 
 const struct wl_output_listener QWaylandDisplay::outputListener = {