From ef126283eb62f376970baa11fc9b2b06f1582191 Mon Sep 17 00:00:00 2001
From: Ichthyostega <prg@ichthyostega.de>
Date: Mon, 16 May 2011 04:37:03 +0200
Subject: [PATCH] add symbolic constant for "neutral" time.

Note: it's rather arbitrary choosen,
because any time grid can define its own origin.
You must not assume that the origin of any time axis
is located at Time::ZERO !!
---
 .../timeline/{basic-draw-strategy.cpp => draw-strategy.cpp}      | 0
 src/lib/time/lumitime.cpp                                        | 1 +
 src/lib/time/timevalue.hpp                                       | 1 +
 3 files changed, 2 insertions(+)
 rename src/gui/widgets/timeline/{basic-draw-strategy.cpp => draw-strategy.cpp} (100%)

diff --git a/src/gui/widgets/timeline/basic-draw-strategy.cpp b/src/gui/widgets/timeline/draw-strategy.cpp
similarity index 100%
rename from src/gui/widgets/timeline/basic-draw-strategy.cpp
rename to src/gui/widgets/timeline/draw-strategy.cpp
diff --git a/src/lib/time/lumitime.cpp b/src/lib/time/lumitime.cpp
index cc40b26c7..de79b7f38 100644
--- a/src/lib/time/lumitime.cpp
+++ b/src/lib/time/lumitime.cpp
@@ -39,6 +39,7 @@ namespace time {
   /** @note the allowed time range is explicitly limited to help overflow protection */
   const Time Time::MAX ( TimeValue::buildRaw_(+std::numeric_limits<gavl_time_t>::max() / 30) );
   const Time Time::MIN ( TimeValue::buildRaw_(-_raw(Time::MAX)                             ) );
+  const Time Time::ZERO;
   
   
   /** convenience constructor to build an
diff --git a/src/lib/time/timevalue.hpp b/src/lib/time/timevalue.hpp
index 4087a9f5f..fcc287941 100644
--- a/src/lib/time/timevalue.hpp
+++ b/src/lib/time/timevalue.hpp
@@ -273,6 +273,7 @@ namespace time {
     public:
       static const Time MAX ; 
       static const Time MIN ;
+      static const Time ZERO;
       
       explicit 
       Time (TimeValue const& val =TimeValue(0))