| {␍␊ |
| #region Fields␍␊ |
| ␍␊ |
| // the number of pixels to pad above and below menu entries for touch input␍␊ |
| const int menuEntryPadding = 10;␍␊ |
| ␍␊ |
| private List<MenuEntry> menuEntries = new List<MenuEntry>();␍␊ |
| int selectedEntry = 0;␍␊ |
| string menuTitle;␍␊ |
|
| public MenuScreen(string menuTitle)␍␊ |
| {␍␊ |
| this.menuTitle = menuTitle;␍␊ |
| // menus generally only need Tap for menu selection␍␊ |
| EnabledGestures = GestureType.Tap;␍␊ |
| ␍␊ |
| TransitionOnTime = TimeSpan.FromSeconds(0.5);␍␊ |
| TransitionOffTime = TimeSpan.FromSeconds(0.5);␍␊ |
|
| ␍␊ |
| #region Handle Input␍␊ |
| ␍␊ |
| /// <summary>␍␊ |
| /// Allows the screen to create the hit bounds for a particular menu entry.␍␊ |
| /// </summary>␍␊ |
| protected virtual Rectangle GetMenuEntryHitBounds(MenuEntry entry)␍␊ |
| {␍␊ |
| // the hit bounds are the entire width of the screen, and the height of the entry␍␊ |
| // with some additional padding above and below.␍␊ |
| return new Rectangle(␍␊ |
| 0,␍␊ |
| (int)entry.Position.Y - menuEntryPadding,␍␊ |
| ScreenManager.GraphicsDevice.Viewport.Width,␍␊ |
| entry.GetHeight(this) + (menuEntryPadding * 2));␍␊ |
| }␍␊ |
| ␍␊ |
| /// <summary>␍␊ |
| /// Responds to user input, changing the selected entry and accepting␍␊ |
|
| // If we pass a null controlling player, the InputState helper returns to␍␊ |
| // us which player actually provided the input. We pass that through to␍␊ |
| // OnSelectEntry and OnCancel, so they can tell which player triggered them.␍␊ |
| PlayerIndex playerIndex;␍␊ |
| ␍␊ |
| ␍␊ |
| #if WINDOWS || XBOX360␍␊ |
| PlayerIndex playerIndex;␍␊ |
| // Move to the previous menu entry?␍␊ |
| if (menuUp.Evaluate(input, ControllingPlayer, out playerIndex))␍␊ |
| {␍␊ |
|
| {␍␊ |
| OnCancel(playerIndex);␍␊ |
| }␍␊ |
| #endif␍␊ |
| ␍␊ |
| #if WINDOWS_PHONE␍␊ |
| //selectedEntry = 1;␍␊ |
| ␍␊ |
| PlayerIndex player;␍␊ |
| if (input.IsNewButtonPress(Buttons.Back, ControllingPlayer, out player))␍␊ |
| {␍␊ |
| OnCancel(player);␍␊ |
| }␍␊ |
| ␍␊ |
| // look for any taps that occurred and select any entries that were tapped␍␊ |
| foreach (GestureSample gesture in input.Gestures)␍␊ |
| {␍␊ |
| //System.Diagnostics.Debugger.Break();␍␊ |
| if (gesture.GestureType == GestureType.Tap)␍␊ |
| {␍␊ |
| // convert the position to a Point that we can test against a Rectangle␍␊ |
| Point tapLocation = new Point((int)gesture.Position.X, (int)gesture.Position.Y);␍␊ |
| ␍␊ |
| // iterate the entries to see if any were tapped␍␊ |
| for (int i = 0; i < menuEntries.Count; i++)␍␊ |
| {␍␊ |
| MenuEntry menuEntry = menuEntries[i];␍␊ |
| ␍␊ |
| if (GetMenuEntryHitBounds(menuEntry).Contains(tapLocation))␍␊ |
| {␍␊ |
| // select the entry. since gestures are only available on Windows Phone,␍␊ |
| // we can safely pass PlayerIndex.One to all entries since there is only␍␊ |
| // one player on Windows Phone.␍␊ |
| OnSelectEntry(i, PlayerIndex.One);␍␊ |
| }␍␊ |
| }␍␊ |
| }␍␊ |
| }␍␊ |
| #endif␍␊ |
| }␍␊ |
| ␍␊ |
| ␍␊ |
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