Add convenience functions to convert between seconds and NSs

Makes it easier to read and to re-use.

Change-Id: I74be7a623d0c2495ff2f6a42ac495ab469bb4d60
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/src/animation/backend/animationutils_p.h b/src/animation/backend/animationutils_p.h
index a0ab218d4..94038eecc 100644
--- a/src/animation/backend/animationutils_p.h
+++ b/src/animation/backend/animationutils_p.h
@@ -56,6 +56,7 @@
 
 #include <QtCore/qbitarray.h>
 #include <QtCore/qdebug.h>
+#include <qmath.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -243,6 +244,9 @@ struct AnimationCallbackAndValue
     QVariant value;
 };
 
+inline constexpr double toSecs(qint64 nsecs) { return nsecs / 1.0e9; }
+inline qint64 toNsecs(double seconds) { return qRound64(seconds * 1.0e9); }
+
 template<typename Animator>
 AnimatorEvaluationData evaluationDataForAnimator(Animator animator, Clock* clock, qint64 nsSincePreviousFrame)
 {
@@ -251,7 +255,7 @@ AnimatorEvaluationData evaluationDataForAnimator(Animator animator, Clock* clock
     data.currentLoop = animator->currentLoop();
     data.playbackRate = clock != nullptr ? clock->playbackRate() : 1.0;
     // Convert global time from nsec to sec
-    data.elapsedTime = double(nsSincePreviousFrame) / 1.0e9;
+    data.elapsedTime = toSecs(nsSincePreviousFrame);
     data.currentTime = animator->lastLocalTime();
     return data;
 }