Added QScreen::refreshRate() to get the vertical refresh rate.

To give applications that want it the option to use a fixed timestep for
animations, and to avoid having values of 60 hard-coded (we have a
couple of those in qtdeclarative/src/quick already), we need to know the
refresh rates of the screens we are rendering to.

Change-Id: Ife49162e830440ad7eab563a27e8aebbbafc5fc5
Reviewed-by: Girish Ramakrishnan <girish.1.ramakrishnan@nokia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/plugins/platforms/xcb/qxcbconnection.h b/src/plugins/platforms/xcb/qxcbconnection.h
index 34943bfdef..86eaf5d7d9 100644
--- a/src/plugins/platforms/xcb/qxcbconnection.h
+++ b/src/plugins/platforms/xcb/qxcbconnection.h
@@ -355,6 +355,7 @@ public:
 
     bool hasXFixes() const { return xfixes_first_event > 0; }
     bool hasXShape() const { return has_shape_extension; }
+    bool hasXRandr() const { return has_randr_extension; }
     bool hasInputShape() const { return has_input_shape; }
 
 private slots:
@@ -365,6 +366,7 @@ private:
     void sendConnectionEvent(QXcbAtom::Atom atom, uint id = 0);
     void initializeXFixes();
     void initializeXRender();
+    void initializeXRandr();
     void initializeXShape();
 #ifdef XCB_USE_DRI2
     void initializeDri2();
@@ -432,8 +434,10 @@ private:
     QVector<PeekFunc> m_peekFuncs;
 
     uint32_t xfixes_first_event;
+    uint32_t xrandr_first_event;
 
     bool has_shape_extension;
+    bool has_randr_extension;
     bool has_input_shape;
 };