/// <summary>
/// Down Scroll Button
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
void ScrollDown(GUIComponent sender, OnMouseClickEventArgs args)
{
if (topItem < Items.Count - numItems)
{
topItem++;
UpdateList();
PosBar.UpdateLocation(PosBar.Location + new Vector2(0, barIntervals));
}
}
/// <summary>
/// Allows the game component to perform any initialization it needs to before starting
/// to run. This is where it can query for any required services and load content.
/// </summary>
public override void Initialize()
{
base.Initialize();
// TODO: Add your initialization code here
batch = new SpriteBatch(Game.GraphicsDevice);
font = Game.Content.Load <SpriteFont>(@"Fonts\Console");
primBatch = new PrimitiveBatch(Game.GraphicsDevice);
// Set up visible items
if (numItems > Items.Count)
{
numItems = Items.Count;
}
// Initialise the buttons
foreach (GUIListBoxItem lbi in Items)
{
lbi.Initialize();
lbi.Parent = this;
if (font.MeasureString(lbi.Name).X > maxWidth)
{
maxWidth = font.MeasureString(lbi.Name).X;
}
lbi.OnMouseClick += new GUIListBoxItem.MouseClickHandler(SelectItem);
}
maxWidth += 20;
foreach (GUIListBoxItem lbi in Items)
{
lbi.boxDimensions.X = maxWidth;
}
// And set the initial locations
UpdateList();
components = new List <GUIComponent>();
// Get width of the listbox
float boxHeight = (numItems - 1) * Items[0].Bounds.Height;
// Display Down button
DownButton = new GUIButton(Game, new Vector2(maxWidth, boxHeight + 20), new Vector2(20, 20), "down", "+");
DownButton.Initialize();
DownButton.OnMouseClick += new GUIButton.MouseClickHandler(ScrollDown);
DownButton.UpdateLocation(DownButton.Location + new Vector2(Location.X, Location.Y));
components.Add(DownButton);
// Display Up button
UpButton = new GUIButton(Game, new Vector2(maxWidth, 20), new Vector2(20, 20), "up", "-");
UpButton.Initialize();
UpButton.OnMouseClick += new GUIButton.MouseClickHandler(ScrollUp);
UpButton.UpdateLocation(UpButton.Location + new Vector2(Location.X, Location.Y));
components.Add(UpButton);
// Calculate bar intervals
barIntervals = ((boxHeight - 20) / Items.Count);
PosBar = new GUIButton(Game, new Vector2(maxWidth, 40), new Vector2(20, barIntervals * numItems), "bar", "");
PosBar.BackgroundColor = HighlightColor;
PosBar.AllowHold = true;
PosBar.Initialize();
PosBar.OnMouseHold += new GUIButton.MouseClickHandler(DragScroll);
PosBar.UpdateLocation(PosBar.Location + new Vector2(Location.X, Location.Y));
components.Add(PosBar);
currentItem = new GUILabel(Game, new Vector2(0, 0), new Vector2(maxWidth, 20), "label", "Select ...");
currentItem.Initialize();
currentItem.BackgroundColor = Color.AntiqueWhite;
currentItem.UpdateLocation(currentItem.Location + new Vector2(Location.X, Location.Y));
components.Add(currentItem);
OpenCloseList = new GUIButton(Game, new Vector2(maxWidth, 0), new Vector2(20, 20), "openclose", "+");
OpenCloseList.Initialize();
OpenCloseList.OnMouseClick += new GUIButton.MouseClickHandler(OCList);
OpenCloseList.UpdateLocation(OpenCloseList.Location + new Vector2(Location.X, Location.Y));
components.Add(OpenCloseList);
}