/// <summary>
/// Called by the control's internal sizing mechanism.
/// Returns the rectangle for a scroll button.
/// </summary>
/// <param name="buttonType">The scroll button to
/// get the rectangle for.</param>
/// <param name="selectedGroup">The Selected Group in the control.</param>
/// <param name="internalGroupHeight">The internal height of the
/// selected group</param>
/// <returns>The Rectangle for the scroll button.</returns>
protected override Rectangle GetScrollButtonRectangle(
ListBarScrollButton.ListBarScrollButtonType buttonType,
ListBarGroup selectedGroup,
int internalGroupHeight
)
{
Point location;
Size size = new Size(
selectedGroup.ButtonHeight,
selectedGroup.ButtonHeight);
bool rightToLeft = (base.RightToLeft == RightToLeft.Yes);
int left = (rightToLeft ?
selectedGroup.ButtonLocation.X - size.Width - 2 :
selectedGroup.ButtonLocation.X + selectedGroup.ButtonWidth + 2
);
if (buttonType == ListBarScrollButton.ListBarScrollButtonType.Up)
{
location = new Point(
left,
selectedGroup.ButtonLocation.Y);
}
else
{
// is selectedGroup the last visible item in the control?
ListBarGroup nextGroup = GetNextGroup(selectedGroup);
location = new Point(
left,
(nextGroup == null ?
selectedGroup.ButtonLocation.Y + selectedGroup.ButtonHeight + internalGroupHeight - size.Height :
nextGroup.ButtonLocation.Y));
}
return(new Rectangle(location, size));
}
/// <summary>
/// Creates a new instance of a <see cref="ListBarScrollButton"/> used by
/// this control to draw the scroll buttons. Fired during control initialisation
/// </summary>
/// <param name="buttonType">The type of scroll button (Up or Down)
/// to create</param>
/// <returns>A new <see cref="ListBarScrollButton"/> which is drawn when a
/// <see cref="ListBarGroup"/> contains more items than can be
/// displayed.</returns>
protected override ListBarScrollButton CreateListBarScrollButton(
ListBarScrollButton.ListBarScrollButtonType buttonType)
{
return(new VSNetListBarScrollButton(this, buttonType));
}