Working toward happier image loading/caching. Changed to Unix text

format from DOS.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@47 542714f4-19e9-0310-aa3c-eee0fc999fb1

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

@@ -1,19 +1,73 @@
-//
-// $Id: ImageManager.java,v 1.1 2001/07/12 22:38:03 shaper Exp $
-
-package com.threerings.cocktail.miso.media;
-
-import java.awt.*;
-import java.awt.image.ImageObserver;
-
-public class ImageManager
-{
-    public static Image getImage (String fname, ImageObserver obs)
-    {
-	Image img = tk.getImage(fname);
-	tk.prepareImage(img, -1, -1, obs);
-	return img;
-    }
-
-    public static Toolkit tk = Toolkit.getDefaultToolkit();
-}
+//
+// $Id: ImageManager.java,v 1.2 2001/07/14 00:02:10 shaper Exp $
+
+package com.threerings.cocktail.miso.media;
+
+import com.threerings.cocktail.miso.Log;
+
+import java.awt.*;
+import java.awt.image.*;
+import java.util.Hashtable;
+
+public class ImageManager
+{
+    public static Toolkit tk = Toolkit.getDefaultToolkit();
+
+    public static void init (Component root)
+    {
+	_root = root;
+	tk = root.getToolkit();
+    }
+
+    public static Image getImage (String fname)
+    {
+	if (_root == null) {
+	    Log.warning("Attempt to get image without valid root component.");
+	    return null;
+	}
+
+	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);
+		Log.info("Loaded image into cache successfully.");
+	    }
+
+	} catch (Exception e) {
+	    e.printStackTrace();
+	}
+
+	return img;
+    }
+
+    public static BufferedImage getImageCropped (Image fullImg, int x, int y,
+						 int width, int height)
+    {
+	BufferedImage img =
+	    new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
+
+	Graphics2D g2 = img.createGraphics();
+	g2.drawImage(fullImg, -x, -y, null);
+
+	return img;
+    }
+
+    protected static Component _root;
+    protected static Hashtable _imgs = new Hashtable();
+}