private Vector2 getTextPosition(MenuScreen screen)
{
Vector2 textPosition = Vector2.Zero;
if (Scale == 1f)
{
textPosition = new Vector2((int) position.X + buttonTexture.Width/2 - GetWidth(screen)/2,
(int) position.Y);
}
else
{
textPosition = new Vector2(
(int) position.X + (buttonTexture.Width/2 - ((GetWidth(screen)/2)*Scale)),
(int) position.Y + (GetHeight(screen) - GetHeight(screen)*Scale)/2);
}
return textPosition;
}
/// <summary>
/// Updates the menu entry.
/// </summary>
public virtual void Update(MenuScreen screen, bool isSelected, GameTime gameTime)
{
// there is no such thing as a selected item on Windows Phone, so we always
// force isSelected to be false
#if WINDOWS_PHONE
isSelected = false;
#endif
// When the menu selection changes, entries gradually fade between
// their selected and deselected appearance, rather than instantly
// popping to the new state.
float fadeSpeed = (float) gameTime.ElapsedGameTime.TotalSeconds*4;
if (isSelected)
selectionFade = Math.Min(selectionFade + fadeSpeed, 1);
else
selectionFade = Math.Max(selectionFade - fadeSpeed, 0);
}
/// <summary>
/// Queries how much space this menu entry requires.
/// </summary>
public virtual int GetHeight(MenuScreen screen)
{
return (int) screen.ScreenManager.Font.MeasureString(Text).Y;
}
/// <summary>
/// Queries how wide the entry is, used for centering on the screen.
/// </summary>
public virtual int GetWidth(MenuScreen screen)
{
return (int) screen.ScreenManager.Font.MeasureString(Text).X;
}
/// <summary>
/// Draws the menu entry. This can be overridden to customize the appearance.
/// </summary>
public virtual void Draw(MenuScreen screen, bool isSelected, GameTime gameTime)
{
Color textColor = isSelected ? Color.White : Color.Black;
Color tintColor = isSelected ? Color.White : Color.Gray;
#if WINDOWS_PHONE
// there is no such thing as a selected item on Windows Phone, so we always
// force isSelected to be false
isSelected = false;
tintColor = Color.White;
textColor = Color.Black;
#endif
// Draw text, centered on the middle of each line.
ScreenManager screenManager = screen.ScreenManager;
SpriteBatch spriteBatch = screenManager.SpriteBatch;
SpriteFont font = screenManager.Font;
buttonTexture = screenManager.ButtonBackground;
spriteBatch.Draw(buttonTexture, new Vector2((int) position.X, (int) position.Y), tintColor);
spriteBatch.DrawString(screenManager.Font, text, getTextPosition(screen),
textColor, Rotation, Vector2.Zero, Scale, SpriteEffects.None, 0);
}