/// <summary>
/// Initializes the menu components.
/// </summary>
public void LateInitialize()
{
// adding the head of the menu to the list of menus
AllMenuTitles.Add(Items[0].Header);
foreach (var t in Items)
{
Game.Components.Add(t);
// Add the child component to the game with the modified parameters.
if (t.Items.Count > 0)
{
AllSubMenuTitles.Add(t.Header);
if (!OpenSubMenuDictionary.ContainsKey(t.Header))
{
OpenSubMenuDictionary.Add(t.Header, false);
}
}
}
Items[0].Width += (int)Items[0].Padding.Left + (int)Items[0].Padding.Right;
Items[0].Height += (int)Items[0].Padding.Top + (int)Items[0].Padding.Bottom;
Items[0].Margin = new Thickness(Margin.Left, Margin.Top, Margin.Right, Margin.Bottom);
CalculateGreatestWidth();
SetWidthAndHeight();
IsEnabled = true;
_lateInitialize = true;
}
/// <summary>
/// Loads the children once the grid has been set up.
/// </summary>
private void LateInitialize()
{
_lateInitialize = true;
if (Items.Count > 0)
{
foreach (var t in Items)
{
Game.Components.Add(t);
}
// space for the arrow to draw.
Width += 20;
// Add the header to the list of submenus so that its parent
// menus will not close.
AllSubMenuTitles.Add(Header);
if (!OpenSubMenuDictionary.ContainsKey(Header))
{
OpenSubMenuDictionary.Add(Header, false);
}
CalculateGreatestWidth();
SetWidthAndHeight();
foreach (var t in Items)
{
t.Visible = Visibility.Hidden;
t.HorizontalAlignment = HorizontalAlignment;
t.VerticalAlignment = VerticalAlignment;
}
}
}
private void MouseDownUpEvent()
{
// set bool to toggle check marks if IsCheckable on mouse down.
if (IsCheckable)
{
IsChecked = !IsChecked;
}
// causes the menu to close when a menu item is clicked, and it is not the head
// of the menu.
if (!AllSubMenuTitles.Contains(Header) && !AllMenuTitles.Contains(Header))
{
MenuVisibilityCount = 0;
}
}
/// <summary>
/// When a font changes from the default, longest width of all
/// menu items must be calculated again so that all menu items
/// share the same width.
/// </summary>
private void CalculateGreatestWidth()
{
_longestWidth = 0;
for (var i = 1; i < Items.Count; i++)
{
Items[i].Width += (int)Items[i].Padding.Left + (int)Items[i].Padding.Right + _checkMarkWidth;
// adding space for the arrow to denote that a submenu is available.
if (AllSubMenuTitles.Contains(Items[i].Header))
{
Items[i].Width += 20;
}
if (_longestWidth <= Items[i].Width)
{
_longestWidth = Items[i].Width;
}
}
}
/// <summary>
/// Draws the Menu Item.
/// </summary>
/// <param name="gameTime"></param>
public override void Draw(GameTime gameTime)
{
base.Draw(gameTime);
if (Visible == Visibility.Visible)
{
if (Items.Count > 0 && !_menuItemVariablesFinalized)
{
_menuItemVariablesFinalized = true;
CalculateGreatestWidth();
SetWidthAndHeight();
}
SpriteBatch.Begin();
if (!_transparent)
{
if (AllMenuTitles.Contains(Header))
{
if (MouseEntered)
{
SpriteBatch.Draw(Pixel, Panel, Color.LightGray * 0.25f);
}
else
{
SpriteBatch.Draw(Pixel, Panel, _backgroundColor);
}
}
if (!AllMenuTitles.Contains(Header))
{
var opacity = (float)Opacity * 0.45f;
// drawing the drop shadow.
if (!_dropShadowRectMeasured)
{
MeasureGhostRect();
}
SpriteBatch.Draw(Pixel, _dropShadowRect, Color.Black * opacity);
// highlights the hovered menu item.
if (MouseEntered || (_subMenuPanel.Contains(MsRect) && Items[0].Visible == Visibility.Visible))
{
SpriteBatch.Draw(Pixel, Panel, _backgroundColor);
SpriteBatch.Draw(Pixel, Panel, Color.LightGray * 0.35f);
// borders the top of the menu item
SpriteBatch.Draw(Pixel, _strokePanelTop, _stroke * (float)Opacity);
// borders the bottom of the menu item.
SpriteBatch.Draw(Pixel, _strokePanelBottom, _stroke * (float)Opacity);
// borders the left side of the menu item.
SpriteBatch.Draw(Pixel, _strokePanelLeft, _stroke * (float)Opacity);
// borders the right side of the menu item.
SpriteBatch.Draw(Pixel, _strokePanelRight, _stroke * (float)Opacity);
}
else
{
if (!AllMenuTitles.Contains(Header))
{
SpriteBatch.Draw(Pixel, Panel, _backgroundColor);
SpriteBatch.Draw(Pixel, _strokePanelLeft, _stroke * (float)Opacity);
SpriteBatch.Draw(Pixel, _strokePanelRight, _stroke * (float)Opacity);
}
}
}
if (AllSubMenuTitles.Contains(Header))
{
ArrowRect.X = Panel.X + Panel.Width - (Arrow.Width + 5);
ArrowRect.Y = (Panel.Y + (Height / 2)) - (ArrowRect.Height / 2);
SpriteBatch.Draw(Arrow, ArrowRect, Color.White * (float)Opacity);
}
}
if (SubMenuOpened)
{
SpriteBatch.Draw(Pixel, _subMenuPanel, Color.Black);
}
if (IsEnabled)
{
SpriteBatch.DrawString(SpriteFont, Text, _textPos, ForegroundColor * (float)Opacity);
}
else
{
SpriteBatch.DrawString(SpriteFont, Text, _textPos, ForegroundColor * 0.3f);
}
if (IsChecked)
{
MeasureCheckMark();
SpriteBatch.Draw(CheckMark, CheckMarkRect, Color.White * (float)Opacity);
}
SpriteBatch.End();
}
}
