Created an Icon implementation that can be used to render sprites anywhere

that icons can be rendered.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@1365 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/media/sprite/SpriteIcon.java

@@ -0,0 +1,69 @@
+//
+// $Id: SpriteIcon.java,v 1.1 2002/05/16 02:58:59 mdb Exp $
+
+package com.threerings.media.sprite;
+
+import java.awt.Component;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+
+import javax.swing.Icon;
+
+/**
+ * Implements the icon interface, using a {@link Sprite} to render the
+ * icon image.
+ */
+public class SpriteIcon implements Icon
+{
+    /**
+     * Creates a sprite icon that will use the supplied sprite to render
+     * itself. This sprite should not be used for anything else while
+     * being used in this icon because it will be "moved" when the icon is
+     * rendered. The sprite's origin will be set to the bottom center of
+     * the label. If this is undesirable, the origin can be offset via
+     * {@link #setOriginOffsets}.
+     */
+    public SpriteIcon (Sprite sprite)
+    {
+        _sprite = sprite;
+    }
+
+    /**
+     * Origin offsets to use when rendering the icon (useful for tweaking
+     * when trying to get sprites that weren't designed to be stuffed into
+     * labels to behave appropriately).
+     */
+    public void setOriginOffsets (int offx, int offy)
+    {
+        _offx = offx;
+        _offy = offy;
+    }
+
+    // documentation inherited from interface
+    public void paintIcon (Component c, Graphics g, int x, int y)
+    {
+        // move the sprite to a "location" that is in the bottom center of
+        // our bounds (plus whatever offsets we have)
+        _sprite.setLocation(x + _sprite.getWidth()/2 + _offx,
+                            y + _sprite.getHeight() + _offy);
+        _sprite.paint((Graphics2D)g);
+    }
+    
+    // documentation inherited from interface
+    public int getIconWidth ()
+    {
+        return _sprite.getWidth();
+    }
+
+    // documentation inherited from interface
+    public int getIconHeight ()
+    {
+        return _sprite.getHeight();
+    }
+
+    /** The sprite used to render this icon. */
+    protected Sprite _sprite;
+
+    /** Origin offsets to use when rendering the icon. */
+    protected int _offx, _offy;
+}