Java Canvas.addMouseWheelListener方法代码示例

import java.awt.Canvas; //导入方法依赖的package包/类
/** 
    * Initialize the input manager to receive input events from the given AWT canvas
    * and start the input manager running. The input manager will perform picks with the
    * given camera. This routine can only be called once. To subsequently change the 
    * camera, use <code>setCameraComponent</code>. To subsequently change the focus manager,
    * use <code>setFocusManager</code>.
    * @param canvas The AWT canvas which generates AWT user events.
    * @param cameraComp The mtgame camera component to use for picking operations.
    */
   public void initialize (Canvas canvas, CameraComponent cameraComp) {
if (this.canvas != null) {
    throw new IllegalStateException("initialize has already been called for this InputManager");
}
this.canvas = canvas;
inputPicker.setCanvas(canvas);

setCameraComponent(cameraComp);

canvas.addKeyListener(this);
canvas.addMouseListener(this);
canvas.addMouseMotionListener(this);
canvas.addMouseWheelListener(this);
canvas.addFocusListener(this);
       canvas.setDropTarget(new DropTarget(canvas, this));

logger.fine("Input System initialization complete.");
   }
 

import java.awt.Canvas; //导入方法依赖的package包/类
/**
 * Sets up the Listener
 * @param cnv	Canvas
 */
public static void setup(Canvas cnv){
	cnv.addKeyListener(new Listener());
	cnv.addMouseListener(new Listener());
	cnv.addMouseWheelListener(new Listener());
	cnv.addMouseMotionListener(new Listener());
}
 

import java.awt.Canvas; //导入方法依赖的package包/类
public AwtEventsHandler(MainGame game, Canvas canvas) {
	this.game = game;
	// add a key input system (defined below) to our canvas
	// so we can respond to key pressed
	canvas.addKeyListener(new KeyInputHandler());
	canvas.addMouseListener(new MouseInputHander());
	canvas.addMouseWheelListener(new MouseWheelInputHander());
	canvas.addMouseMotionListener(new MouseMoveInputHander());
	
	// TODO: A lot of this should be calling a nicer function in Game to handle
	// mouse+keyboard/touch input
}
 

import java.awt.Canvas; //导入方法依赖的package包/类
public Java2DFrame(Spark game)
{
	super(GraphicsEnvironment.getLocalGraphicsEnvironment()
			.getDefaultScreenDevice().getDefaultConfiguration());

	this.game = game;

	ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
	gd = ge.getDefaultScreenDevice();
	gc = gd.getDefaultConfiguration();

	setTitle("Spark");

	setFocusable(false);
	setBackground(Color.black);
	setFocusTraversalKeysEnabled(false);
	setResizable(false);
	setIgnoreRepaint(true);

	if (game.gameOptions.displayWindowed == false)
		setUndecorated(true);

	setIconImage(new ImageIcon("spark/images/imgIcon.gif").getImage());

	// Invisible cursor
	int[] pixels = new int[16 * 16];
	Image image = Toolkit.getDefaultToolkit().createImage(
			new MemoryImageSource(16, 16, pixels, 0, 16));
	Cursor transparentCursor = Toolkit.getDefaultToolkit()
			.createCustomCursor(image, new Point(0, 0), "invisibleCursor");

	setCursor(transparentCursor);

	drawCanvas = new Canvas(gc);
	drawCanvas.setPreferredSize(new Dimension(game.ResolutionX,
			game.ResolutionY));
	drawCanvas.setBackground(Color.black);
	drawCanvas.setIgnoreRepaint(true);
	drawCanvas.setFocusTraversalKeysEnabled(false);
	drawCanvas.addKeyListener(this);
	drawCanvas.addMouseListener(this);
	drawCanvas.addMouseWheelListener(this);
	drawCanvas.setCursor(transparentCursor);
	add(drawCanvas);

	addWindowListener(this);

	pack();
	setLocationRelativeTo(null);

	if (game.gameOptions.displayWindowed == false)
	{
		setFullScreen();
	}

	setVisible(true);

	drawCanvas.requestFocus();
}
 

import java.awt.Canvas; //导入方法依赖的package包/类
/**
 * Constructs a new Screen object with the given width, height and title.
 * The screen can be resized.
 * @param width The screen width
 * @param height The screen height
 * @param title The screen title
 */
public Screen(final int width, final int height, final String title) {
	frame = new JFrame(title);
	canvas = new Canvas();
	mouse = new Mouse();
	keyboard = new Keyboard();
	
	final WindowAdapter closingAdapter = new WindowAdapter() {
		@Override
		public void windowClosing(final WindowEvent w) {
			close();
			
			if (closingCallback != null) {
				closingCallback.run();
			}
		}
	};
	final ComponentAdapter resizeAdapter = new ComponentAdapter() {
		@Override
		public void componentResized(final ComponentEvent c) {
			calculateViewport();
			
			if (redrawOnResize) {
				redraw();
			}
		}
	};
	
	open = true;
	initialWidth = canvasWidth = renderWidth = width;
	initialHeight = canvasHeight = renderHeight = height;
	resizeBehavior = ResizeBehavior.STRETCH;
	
	canvas.setPreferredSize(new Dimension(width, height));
	canvas.setIgnoreRepaint(true);
	canvas.addMouseListener(mouse);
	canvas.addMouseMotionListener(mouse);
	canvas.addMouseWheelListener(mouse);
	canvas.addKeyListener(keyboard);
	
	frame.addMouseListener(mouse);
	frame.addMouseMotionListener(mouse);
	frame.addMouseWheelListener(mouse);
	frame.addKeyListener(keyboard);
	frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
	frame.setIgnoreRepaint(true);
	frame.addWindowListener(closingAdapter);
	frame.addComponentListener(resizeAdapter);
	frame.add(canvas);
	frame.pack();
	frame.setLocationRelativeTo(null);
}