internal ListBoxStateMachineItemEventArgs(ListBoxStateMachineItem listBoxItemStateMachine)
{
this.item = listBoxItemStateMachine;
}
/// <summary>
/// Called from the <strong>OnItemStateChanged</strong> event handler to
/// raise the <strong><see cref="ItemStateChanged"/></strong> event for clients of this
/// <strong><see cref="ListBoxStateMachine"/></strong> object.
/// </summary>
/// <param name="item">The item that changed state.</param>
protected virtual void OnItemStateChanged(ListBoxStateMachineItem item)
{
GotItemStateChanged = true;
EventHandler<ListBoxStateMachineItemEventArgs> temp = ItemStateChanged;
if (temp != null)
{
temp(this, new ListBoxStateMachineItemEventArgs(item));
}
}
/// <summary>
/// Calculate the source and destination Rectangles to be used for drawing a list box item.
/// </summary>
/// <param name="item"></param>
/// <param name="source">The source Rectangle.</param>
/// <param name="destination">The destination Rectangle</param>
/// <param name="clipLeft">Number of pixels to clip on left.</param>
/// <param name="clipRight">Number of pixels to clip on right.</param>
private void GetDrawingRectangles(ListBoxStateMachineItem item,
out Rectangle source, out Rectangle destination,
out int clipLeft, out int clipRight)
{
int x = Convert.ToInt32(Left + item.HorizontalStartPosition * item.Parent.NumberOfPixelsInHorizontalAxis);
int y = Convert.ToInt32(Top);
int width = itemDefault.Width;
int height = itemDefault.Height;
// Determine if the item should be clipped on the right.
clipRight = 0;
if (x + itemDefault.Width > Right)
{
clipRight = x + itemDefault.Width - Convert.ToInt32(Right);
width -= clipRight;
}
// Determine if the item should be clipped on the left.
int left = Convert.ToInt32(Left);
clipLeft = 0;
if (x < left)
{
clipLeft = left - x;
width -= clipLeft;
x = left;
}
source = new Rectangle(clipLeft, 0, width, height);
destination = new Rectangle(x, y, width, height);
}
