private void scrollViewer_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
TimelineCanvas.ReleaseMouseCapture();
}
private void ComputeTicks()
{
if (this.Navigator == null)
{
return;
}
var range = this.Mode == TimelineViewMode.ViewRange ? this.Navigator.ViewRange : this.Navigator.DataRange;
var viewDurationInTicks = range.Duration.Ticks;
TickZoomLevelDescriptor tickZoomLevelDescriptorMajor = tickZoomLevelDescriptors[0];
TickZoomLevel tickZoomLevelMajorLast = this.tickZoomLevelMajor;
foreach (var tickZoomLevelDescriptor in tickZoomLevelDescriptors)
{
tickZoomLevelDescriptorMajor = tickZoomLevelDescriptor;
var countSegments = viewDurationInTicks / tickZoomLevelDescriptor.DurationInTicks;
var segmentWidth = this.ActualWidth / countSegments;
if (segmentWidth > 50)
{
break;
}
}
this.tickZoomLevelMajor = tickZoomLevelDescriptorMajor.TickZoomLevel;
// we've changed zoom levels so reset segments
if (this.tickZoomLevelMajor != tickZoomLevelMajorLast)
{
this.Clear();
}
long segmentStart = (range.StartTime.Ticks - this.Navigator.DataRange.StartTime.Ticks) / tickZoomLevelDescriptorMajor.DurationInTicks;
long segmentEnd = (range.EndTime.Ticks - this.Navigator.DataRange.StartTime.Ticks) / tickZoomLevelDescriptorMajor.DurationInTicks;
// remove all unnessary segments (due to scrolling out of view)
// segment start + duration < visible start time... no part of segment is visible
// or segment start > visible range
var segmentsToRemove = this.segments.Keys.Where(key => key.Item1 + key.Item2 <range.StartTime || key.Item1> range.EndTime).ToList();
foreach (var segmentToRemove in segmentsToRemove)
{
this.timelineCanvas.Children.Remove(this.segments[segmentToRemove]);
this.segments.Remove(segmentToRemove);
}
for (long segment = segmentStart; segment <= segmentEnd; segment++)
{
var startTime = new DateTime(this.Navigator.DataRange.StartTime.Ticks + (segment * tickZoomLevelDescriptorMajor.DurationInTicks));
var duration = new TimeSpan(tickZoomLevelDescriptorMajor.DurationInTicks);
var key = new Tuple <DateTime, TimeSpan>(startTime, duration);
if (!this.segments.ContainsKey(key))
{
var ellapsedTime = new TimeSpan(segment * tickZoomLevelDescriptorMajor.DurationInTicks);
var label = ellapsedTime.ToString();
var segmentView = new TimelineSegmentView(this.Mode == TimelineViewMode.DataRange ? VerticalAlignment.Top : VerticalAlignment.Bottom, 10, label);
TimelineCanvas.SetStartTime(segmentView, startTime);
TimelineCanvas.SetDuration(segmentView, duration);
this.segments.Add(key, segmentView);
this.timelineCanvas.Children.Add(segmentView);
}
}
}
private void scrollViewer_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
scrollMousePoint = e.GetPosition(TimelineCanvas);
hOff = TimelineOffsetX;
TimelineCanvas.CaptureMouse();
}
