} //OnMouseDown
#endregion
#region OnMouseUp
/// <summary>
/// Raises the MouseUp event.
/// </summary>
/// <param name="e">Event Args</param>
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if (e.Button != MouseButtons.Left)
{
return;
}
//Notify the playhead is changed on mouse released
if (mouseSelection.Action == TimelineMouseAction.movePlayhead)
{
OnPlayheadChanged(new TimelinePlayheadChangedEventArgs(PlayHeadTime));
}
//Clear mouseSelection
mouseSelection = TimelineMouseSelection.NoSelection;
//Console.WriteLine("Mouse Up!");
}
public Timeline()
{
InitializeComponent();
//Make the component use a doublebuffer, which will reduce flicker made by
//redrawing the control
SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
SetStyle(ControlStyles.UserPaint, true);
SetStyle(ControlStyles.AllPaintingInWmPaint, true);
SetStyle(ControlStyles.DoubleBuffer, true);
ResizeRedraw = true; //Redraw the component everytime the form gets resized
//Set timewidth to default
TimeWidth = DefaultTimeWidth;
//Set scrollbar to the beginning
ScrollBar.Value = 0;
DrawLocationLabels = true;
//Set leftboundTime
SetBoundTimes(0);
//Create the list of timestamps
playheadBarTimes = new List <Timestamp>();
//Set the timestamps
SetPlayheadBarTimes();
//Set the zoom level
zoomLevel = Zoom.DefaultLevel;
//Set the mouseSelection to no selection
mouseSelection = TimelineMouseSelection.NoSelection;
Redraw();
SetScrollBarValues();
}
/// <summary>
/// Raises the MouseDown event.
/// </summary>
/// <param name="e">Event Args</param>
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
if (e.Button != MouseButtons.Left)
{
return;
}
double mouseClickTime = XCoordinateToTime(e.X);
RectangleF playheadBarRect = new RectangleF(XCaptionOrigin, 0,
Width - LocationLabels.PixelWidth, PlayheadBarHeight);
if (playheadBarRect.Contains(e.Location))
{
//Set Action
mouseSelection = new TimelineMouseSelection(TimelineMouseAction.movePlayhead);
//Set playhead time based on click location
//PlayHeadTime = mouseClickTime;
//Invoke PlayheadChanged event
//OnPlayheadChanged(new TimelinePlayheadChangedEventArgs(PlayHeadTime));
Redraw(); //redraw the playhead
}
else
{
foreach (Caption c in CaptionList)
{
//If the mouse click is not in the same Y location as c, then none of the following code
//needs to be applied
if (YCoordinateToScreenLocation(e.Y) != c.Location)
{
continue;
}
double beginX = TimeToXCoordinate(c.Begin); //X-Coord of c.Begin
//If selecting the beginning of a caption
if (e.X - CaptionSelectionPixelWidth <= beginX && beginX <= e.X + CaptionSelectionPixelWidth)
{
mouseSelection = new TimelineMouseSelection(TimelineMouseAction.changeCaptionBegin, c);
break;
}
double endX = TimeToXCoordinate(c.End); //X-Coord of c.End
//If selecting the end of the Caption
if (e.X - CaptionSelectionPixelWidth <= endX && endX <= e.X + CaptionSelectionPixelWidth)
{
mouseSelection = new TimelineMouseSelection(TimelineMouseAction.changeCaptionEnd, c);
break;
}
//If selecting the center of the caption
if (beginX <= e.X && e.X <= endX)
{
mouseSelection = new TimelineMouseSelection(TimelineMouseAction.moveCaption, c,
mouseClickTime - c.Begin);
break;
}
} //foreach
} //else
//Console.WriteLine("Mouse Down!");
} //OnMouseDown