An Icon that is defined by a Shape.

git-svn-id: https://samskivert.googlecode.com/svn/trunk@1603 6335cc39-0255-0410-8fd6-9bcaacd3b74c
2005-03-02 02:25:49 +00:00
parent 723be499e3
commit a950f7ab3e
1 changed files with 76 additions and 0 deletions
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+//
+// $Id$
+
+package com.samskivert.swing;
+
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.Rectangle;
+import java.awt.RenderingHints;
+import java.awt.Shape;
+
+import javax.swing.Icon;
+
+/**
+ * Fills and or draws the specified shape antialiased as an icon.
+ */
+public class ShapeIcon
+    implements Icon
+{
+    /**
+     * @param shape the shape to paint 
+     * @param fillColor the color to paint the shape filled, or null.
+     * @param outlineColor the color to paint the shape outline, or null.
+     */
+    public ShapeIcon (Shape shape, Color fillColor, Color outlineColor)
+    {
+        _shape = shape;
+        _fillColor = fillColor;
+        _outlineColor = outlineColor;
+    }
+
+    // documentation inherited from interface Icon
+    public int getIconHeight ()
+    {
+        return _shape.getBounds().height;
+    }
+
+    // documentation inherited from interface Icon
+    public int getIconWidth ()
+    {
+        return _shape.getBounds().width;
+    }
+
+    // documentation inherited from interface Icon
+    public void paintIcon (Component c, Graphics g, int x, int y)
+    {
+        Graphics2D g2 = (Graphics2D) g;
+        // turn on anti-aliasing
+        Object oldAlias = g2.getRenderingHint(RenderingHints.KEY_ANTIALIASING);
+        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
+                RenderingHints.VALUE_ANTIALIAS_ON);
+
+        Rectangle bounds = _shape.getBounds();
+        int dx = x - bounds.x;
+        int dy = y - bounds.y;
+        g2.translate(dx, dy);
+        if (_fillColor != null) {
+            g2.setColor(_fillColor);
+            g2.fill(_shape);
+        }
+        if (_outlineColor != null) {
+            g2.setColor(_outlineColor);
+            g2.draw(_shape);
+        }
+        g2.translate(-dx, -dy);
+        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, oldAlias);
+    }
+
+    /** The shape we're drawing. */
+    protected Shape _shape;
+
+    /** Colors. */
+    protected Color _fillColor, _outlineColor;
+}