Repackage classes from com.threerings.cocktail.miso to

com.threerings.miso.  Moved ImageManager to com.threerings.media.
Removed unused StripImage.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@62 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/media/image/ImageManager.java

@@ -0,0 +1,99 @@
+//
+// $Id: ImageManager.java,v 1.1 2001/07/18 21:45:42 shaper Exp $
+
+package com.threerings.media;
+
+import com.threerings.cocktail.miso.Log;
+
+import java.awt.*;
+import java.awt.image.*;
+import java.util.Hashtable;
+
+/**
+ * The ImageManager class provides a single point of access for image
+ * retrieval and caching.
+ *
+ * <p> <b>Note:</b> The ImageManager must be initialized with a root
+ * AWT component before images can be retrieved, in the interest of
+ * allowing for proper preparation of images for optimal storage and
+ * eventual display.
+ */
+public class ImageManager
+{
+    public static Toolkit tk = Toolkit.getDefaultToolkit();
+
+    /**
+     * Initialize the ImageManager with a root component to which
+     * images will later be rendered.
+     */
+    public static void init (Component root)
+    {
+	_root = root;
+	tk = root.getToolkit();
+    }
+
+    /**
+     * Load the image from the specified filename and cache it for
+     * faster retrieval henceforth.
+     */
+    public static Image getImage (String fname)
+    {
+	if (_root == null) {
+	    Log.warning("Attempt to get image without valid root component.");
+	    return null;
+	}
+
+	// TODO: fix this to properly find the file within the
+	// classpath.  getResourceAsStream() returns an InputStream,
+	// but java.awt.Toolkit.createImage() can only take one of a
+	// byte[], String, URL, or ImageProducer.
+	fname = "/home/shaper/workspace/cocktail/" + fname;
+
+	Image img = (Image)_imgs.get(fname);
+	if (img != null) {
+	    Log.info("Retrieved image from cache [fname=" + fname + "].");
+	    return img;
+	}
+
+	Log.info("Loading image into cache [fname=" + fname + "].");
+
+	img = tk.createImage(fname);
+	MediaTracker tracker = new MediaTracker(_root);
+	tracker.addImage(img, 0);
+
+	try {
+	    tracker.waitForID(0);
+	    if (tracker.isErrorAny()) {
+		Log.warning("Error loading image [fname=" + fname + "].");
+		return null;
+
+	    } else {
+		_imgs.put(fname, img);
+	    }
+
+	} catch (Exception e) {
+	    e.printStackTrace();
+	}
+
+	return img;
+    }
+
+    /**
+     * Creates a new image representing the specified rectangular
+     * section cropped from the specified full image object.
+     */
+    public static BufferedImage getImageCropped (Image fullImg, int x, int y,
+						 int width, int height)
+    {
+	BufferedImage img =
+	    new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+
+	Graphics2D g2 = img.createGraphics();
+	g2.drawImage(fullImg, -x, -y, null);
+
+	return img;
+    }
+
+    protected static Component _root;
+    protected static Hashtable _imgs = new Hashtable();
+}