From da706bdce88107c4d5fe0ca492b94e67466862e6 Mon Sep 17 00:00:00 2001
From: Michael Brasser <michael.brasser@nokia.com>
Date: Wed, 12 Aug 2009 15:51:01 +1000
Subject: Basic framerate measurement, until we have something more useful.

---
 src/declarative/util/qfxview.cpp | 16 ++++++++++++++++
 src/declarative/util/qfxview.h   |  1 +
 2 files changed, 17 insertions(+)

diff --git a/src/declarative/util/qfxview.cpp b/src/declarative/util/qfxview.cpp
index 0f129d8..bb436cd 100644
--- a/src/declarative/util/qfxview.cpp
+++ b/src/declarative/util/qfxview.cpp
@@ -63,6 +63,8 @@
 
 QT_BEGIN_NAMESPACE
 
+DEFINE_BOOL_CONFIG_OPTION(frameRateDebug, QML_SHOW_FRAMERATE)
+
 static QVariant stringToPixmap(const QString &str)
 {
     //XXX need to use correct paths
@@ -98,6 +100,7 @@ public:
 
     QSize initialSize;
     bool resizable;
+    QTime frameTimer;
 
     void init();
 
@@ -492,6 +495,19 @@ void QFxView::resizeEvent(QResizeEvent *e)
     QGraphicsView::resizeEvent(e);
 }
 
+/*!
+    \reimp
+*/
+void QFxView::paintEvent(QPaintEvent *event)
+{
+    int time = 0;
+    if (frameRateDebug())
+        time = d->frameTimer.restart();
+    QGraphicsView::paintEvent(event);
+    if (frameRateDebug())
+        qDebug() << "paintEvent:" << d->frameTimer.elapsed() << "time since last frame:" << time;
+}
+
 /*! \fn void QFxView::focusInEvent(QFocusEvent *e)
   This virtual function does nothing with the event \a e
   in this class.
diff --git a/src/declarative/util/qfxview.h b/src/declarative/util/qfxview.h
index b423749..03557a3 100644
--- a/src/declarative/util/qfxview.h
+++ b/src/declarative/util/qfxview.h
@@ -95,6 +95,7 @@ private Q_SLOTS:
 
 protected:
     virtual void resizeEvent(QResizeEvent *);
+    virtual void paintEvent(QPaintEvent *event);
     void focusInEvent(QFocusEvent *);
     void focusOutEvent(QFocusEvent *);
     void timerEvent(QTimerEvent*);
-- 
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