99 lines
3.6 KiB
C#
99 lines
3.6 KiB
C#
using System;
|
|
using Microsoft.Xna.Framework;
|
|
using Microsoft.Xna.Framework.Content;
|
|
using Microsoft.Xna.Framework.Graphics;
|
|
|
|
namespace FarseerPhysics.SamplesFramework
|
|
{
|
|
/// <summary>
|
|
/// A popup message box screen, used to display "are you sure?"
|
|
/// confirmation messages.
|
|
/// </summary>
|
|
public class MessageBoxScreen : GameScreen
|
|
{
|
|
protected Rectangle _backgroundRectangle;
|
|
protected Texture2D _gradientTexture;
|
|
protected string _message;
|
|
protected Vector2 _textPosition;
|
|
|
|
public MessageBoxScreen(string message)
|
|
{
|
|
_message = message;
|
|
|
|
IsPopup = true;
|
|
HasCursor = true;
|
|
|
|
TransitionOnTime = TimeSpan.FromSeconds(0.4);
|
|
TransitionOffTime = TimeSpan.FromSeconds(0.4);
|
|
}
|
|
|
|
public MessageBoxScreen()
|
|
{
|
|
IsPopup = true;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Loads graphics content for this screen. This uses the shared ContentManager
|
|
/// provided by the Game class, so the content will remain loaded forever.
|
|
/// Whenever a subsequent MessageBoxScreen tries to load this same content,
|
|
/// it will just get back another reference to the already loaded data.
|
|
/// </summary>
|
|
public override void LoadContent()
|
|
{
|
|
SpriteFont font = ScreenManager.Fonts.DetailsFont;
|
|
ContentManager content = ScreenManager.Game.Content;
|
|
_gradientTexture = content.Load<Texture2D>("Common/popup");
|
|
|
|
// Center the message text in the viewport.
|
|
Viewport viewport = ScreenManager.GraphicsDevice.Viewport;
|
|
Vector2 viewportSize = new Vector2(viewport.Width, viewport.Height);
|
|
Vector2 textSize = font.MeasureString(_message);
|
|
_textPosition = (viewportSize - textSize) / 2;
|
|
|
|
// The background includes a border somewhat larger than the text itself.
|
|
const int hPad = 32;
|
|
const int vPad = 16;
|
|
|
|
_backgroundRectangle = new Rectangle((int)_textPosition.X - hPad,
|
|
(int)_textPosition.Y - vPad,
|
|
(int)textSize.X + hPad * 2,
|
|
(int)textSize.Y + vPad * 2);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Responds to user input, accepting or cancelling the message box.
|
|
/// </summary>
|
|
public override void HandleInput(InputHelper input, GameTime gameTime)
|
|
{
|
|
|
|
if (input.IsMenuSelect() || input.IsMenuCancel() ||
|
|
input.IsNewMouseButtonPress(MouseButtons.LeftButton))
|
|
{
|
|
ExitScreen();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Draws the message box.
|
|
/// </summary>
|
|
public override void Draw(GameTime gameTime)
|
|
{
|
|
SpriteBatch spriteBatch = ScreenManager.SpriteBatch;
|
|
SpriteFont font = ScreenManager.Fonts.DetailsFont;
|
|
|
|
// Fade the popup alpha during transitions.
|
|
Color color = Color.White * TransitionAlpha * (2f / 3f);
|
|
|
|
spriteBatch.Begin();
|
|
|
|
// Draw the background rectangle.
|
|
spriteBatch.Draw(_gradientTexture, _backgroundRectangle, color);
|
|
|
|
// Draw the message box text.
|
|
spriteBatch.DrawString(font, _message, _textPosition + Vector2.One, Color.Black);
|
|
spriteBatch.DrawString(font, _message, _textPosition, Color.White);
|
|
|
|
spriteBatch.End();
|
|
}
|
|
}
|
|
} |