c&p progress estimation

gistfile1.txt

        // calculate time left if we're more than 10% done
        NSString *timeString = nil;
        float percentLeft = (float)([theCanvas eventCount]-[theCanvas currentPlaybackEvent])/(float)[theCanvas eventCount];
        NSTimeInterval now = [NSDate timeIntervalSinceReferenceDate];
        if( percentLeft < 0.9f && now-_lastTimeWeEstimated > 5.0 ) {
                _lastTimeWeEstimated = now;
                NSTimeInterval timeLeft = (now-_exportStartTime)*(percentLeft/(1.0f-percentLeft));
                int hours = timeLeft/(60.0*60.0);
                timeLeft -= (double)hours*60.0*60.0;
                int mins = timeLeft/60.0;
                timeLeft -= (double)mins*60.0;
                int secs = timeLeft;
                
                if( mins < 1 )
                        timeString = NSLocalizedString(@"less than a minute",@"less than a minute");
                else
                        timeString = [NSString stringWithFormat:@"-%d:%02d:%02d",hours,mins,secs];
                //[_exportTimeText setStringValue:timeString];
        }