private void SetHighlightedTrack(EventFrame frame)
{
if (fHighlightedFrame != frame)
{
fHighlightedFrame = frame;
fToolTipText = new List <string>();
if (fHighlightedFrame != null)
{
fToolTipText.Add(fHighlightedFrame.Name);
fToolTipText.Add(fHighlightedFrame.Start.ToString());
fToolTipText.Add(fHighlightedFrame.End.ToString());
fToolTip.Show(".", this);
}
else
{
fToolTip.Hide(this);
}
Invalidate();
}
}
/// <summary>
/// Construct a new Track.
/// </summary>
/// <param name="track">The timeline track that should be wrapped.</param>
public Track(EventFrame track) : this()
{
fFrames.Add(track);
Name = track.Name;
}
/// <summary>
/// Invoked when the user presses a mouse button over the control.
/// </summary>
/// <param name="e"></param>
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
if (!Focused)
{
Focus();
}
// Store the current mouse position.
Point location = new Point(e.X, e.Y);
if ((e.Button & MouseButtons.Left) != 0)
{
// Check if there is a track at the current mouse position.
EventFrame focusedFrame = HitTest(location);
if (focusedFrame != null)
{
// Was this track already selected?
if (!fSelectedFrames.Contains(focusedFrame))
{
// Tell the track that it was selected.
InvokeSelectionChanged(new SelectionChangedEventArgs(focusedFrame.Yield <ITimeObject>(), null));
// Clear the selection, unless the user is picking
if ((ModifierKeys & Keys.Control) == 0)
{
InvokeSelectionChanged(new SelectionChangedEventArgs(null, (IEnumerable <ITimeObject>)fSelectedFrames));
fSelectedFrames.Clear();
}
// Add track to selection
fSelectedFrames.Add(focusedFrame);
// If the track was already selected and Ctrl is down
// then the user is picking and we want to remove the track from the selection
}
else if ((ModifierKeys & Keys.Control) != 0)
{
fSelectedFrames.Remove(focusedFrame);
InvokeSelectionChanged(new SelectionChangedEventArgs(null, focusedFrame.Yield <ITimeObject>()));
}
}
else if (location.Y < fPlayheadExtents.Height)
{
fCurrentMode = BehaviorMode.TimeScrub;
SetClockFromMousePosition(location);
}
else
{
// Clear the selection, unless the user is picking
if ((ModifierKeys & Keys.Control) == 0)
{
InvokeSelectionChanged(new SelectionChangedEventArgs(null, (IEnumerable <ITimeObject>)fSelectedFrames));
fSelectedFrames.Clear();
}
// Remember this location as the origin for the selection.
fSelectionOrigin = location;
fCurrentMode = BehaviorMode.Selecting;
}
}
else if ((e.Button & MouseButtons.Middle) != 0)
{
fPanOrigin = location;
fRenderingOffsetBeforePan = fRenderingOffset;
}
Invalidate();
}
/// <summary>
/// Retrieve the index of the track of a given frame.
/// </summary>
/// <param name="frame">The frame for which to retrieve the index.</param>
/// <returns>The index of the track or the index the track is a substitute for.</returns>
private int GetTrackIndexForFrame(EventFrame frame)
{
return(fTracks.FindIndex(t => t.Frames.Contains(frame)));
}
/// <summary>
/// Add an event frame to the timeline.
/// </summary>
/// <param name="eventFrame">The event frame to add.</param>
public void AddEventFrame(EventFrame eventFrame)
{
fTracks.Add(new Track(eventFrame));
Recalculate();
Invalidate();
}