/// <summary>
/// In order to move an item we catch the mouse down event to decide which
/// thing has been selected. This function chooses either the selected
/// cut, trigger or player.
/// </summary>
/// <param name="mouseLocation">Screen coordinates.</param>
/// <param name="frame">Frame currently being designed.</param>
/// <param name="converter">Used to convert from screen to pitch
/// coordinates.</param>
public override void handleMouseDown(Point mouseLocation,
PlayFrame frame,
PitchScreenCoordConverter converter,
VisualOverlay overlay)
{
PointF pitchCoords = converter.screenToPitchCoords(mouseLocation);
// Choose closest selected item.
mSelectedPlayer = frame.GetClosestPlayer(pitchCoords,
SELECTION_MAX_DISTANCE);
mSelectedCut = frame.GetClosestCutEnd(pitchCoords,
SELECTION_MAX_DISTANCE);
mSelectedTrigger = frame.GetClosestTrigger(pitchCoords,
SELECTION_MAX_DISTANCE);
mIsMovingDiscControlPoint = frame.IsNearControlPoint(pitchCoords,
SELECTION_MAX_DISTANCE);
// Note that the ordering of priorities here MUST be the same as the
// ordering on mouse up.
if (mSelectedTrigger != null)
{
overlay.SelectedTrigger = mSelectedTrigger;
overlay.TriggerPlayer = mSelectedTrigger.AffectedPlayer;
}
else if (mSelectedCut != null)
{
overlay.DrawingNewCut = false;
overlay.CutStart = mSelectedCut;
}
else if (mSelectedPlayer != null)
{
overlay.SelectedPlayer = mSelectedPlayer;
}
else if (mIsMovingDiscControlPoint)
{
overlay.MovingDiscControlPoint = true;
}
}
