public void DeleteSelectedCaption()
{
if (lastSelectedCaption == null)
{
return;
}
var next = NextCaption(lastSelectedCaption);
if (next != null)
{
next.LeftMargin += lastSelectedCaption.LeftMargin + lastSelectedCaption.MarkerDuration;
}
this.Captions.Remove(lastSelectedCaption);
next.LayoutUpdated();
lastSelectedCaption.Dispose();
lastSelectedCaption = null;
//var elapsed = TimeSpan.Zero;
//foreach (var caption in Captions)
//{
// caption.LeftMargin = caption.StartTime - elapsed;
// elapsed += caption.LeftMargin + caption.MarkerDuration;
//}
}
private void StartDragging(Caption caption)
{
mouseDownPosition = Mouse.GetPosition(this);
startingMarginVal = caption.StartTime + caption.LeftMargin;
draggingCaption = caption;
isDragging = true;
}
public Caption PreviousCaption(Caption caption)
{
var idx = Captions.IndexOf(caption);
if (idx == 0)
{
return(null);
}
return(Captions[idx - 1]);
}
public Caption NextCaption(Caption caption)
{
var idx = Captions.IndexOf(caption);
if (idx >= Captions.Count - 1)
{
return(null);
}
return(Captions[idx + 1]);
}
public static TimelineData FakeData(TimelineLayout layout, TimelinePlayback playback)
{
var timeline = new TimelineData(layout, playback);
for (var i = 0; i < 30; i++)
{
timeline.AddCaption(Caption.FakeData(layout, timeline));
}
return(timeline);
}
public void SelectCaption(Caption caption)
{
if (caption != lastSelectedCaption)
{
if (lastSelectedCaption != null)
{
lastSelectedCaption.IsSelected = false;
}
caption.IsSelected = true;
lastSelectedCaption = caption;
}
}
public void SetCaptionStart(Caption caption, TimeSpan start, int dragSession)
{
var next = NextCaption(caption);
TimeSpan start2;
if (lastSession == null || dragSession != lastSession.Value)
{
start2 = caption.StartTime;
sessionPosition = start2;
lastSession = dragSession;
}
else
{
start2 = sessionPosition;
}
var diff = start - start2;
diff = TimeSpan.FromMilliseconds(Math.Max(0, diff.TotalMilliseconds));
var marginDiff = caption.LeftMargin - diff;
if (next != null && next.LeftMargin + marginDiff < TimeSpan.Zero)
{
diff += (next.LeftMargin + marginDiff);
}
marginDiff = caption.LeftMargin - diff;
caption.LeftMargin = diff;
sessionPosition += caption.LeftMargin - diff;
if (next != null)
{
next.LeftMargin += marginDiff;
}
}
public void AddCaption(Caption caption)
{
Captions.Add(caption);
}