--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/snippets/tree/Snippet226.d	Thu May 22 13:47:53 2008 +0900
@@ -0,0 +1,136 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2006 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ * D Port:
+ *     Bill Baxter <wbaxter@gmail.com>
+ *******************************************************************************/
+module snippets.tree.Snippet226;
+
+/* 
+ * Tree example snippet: Draw a custom gradient selection
+ *
+ * For a list of all SWT example snippets see
+ * http://www.eclipse.org/swt/snippets/
+ * 
+ * @since 3.3
+ */
+import dwt.DWT;
+import dwt.graphics.GC;
+import dwt.graphics.Rectangle;
+import dwt.graphics.Region;
+import dwt.graphics.Color;
+import dwt.layout.FillLayout;
+import dwt.widgets.Display;
+import dwt.widgets.Shell;
+import dwt.widgets.Tree;
+import dwt.widgets.TreeItem;
+import dwt.widgets.TreeColumn;
+import dwt.widgets.Listener;
+import dwt.widgets.Event;
+
+import tango.util.Convert;
+
+import dwt.dwthelper.utils;
+
+void main() 
+{
+	final Display display = new Display();
+	Shell shell = new Shell(display);
+	shell.setText("Custom gradient selection for Tree");
+	shell.setLayout(new FillLayout());
+	final Tree tree = new Tree(shell, DWT.MULTI | DWT.FULL_SELECTION);
+	tree.setHeaderVisible(true);
+	tree.setLinesVisible(true);
+	int columnCount = 4;
+	for (int i=0; i<columnCount; i++) {
+        auto istr = to!(String)(i);
+		TreeColumn column = new TreeColumn(tree, DWT.NONE);
+		column.setText("Column " ~ istr);	
+	}
+	int itemCount = 3;
+	for (int i=0; i<itemCount; i++) {
+        auto istr = to!(String)(i);
+		TreeItem item1 = new TreeItem(tree, DWT.NONE);
+		item1.setText("item "~istr);
+		for (int c=1; c < columnCount; c++) {
+            auto cstr = to!(String)(c);
+			item1.setText(c, "item ["~istr~"-"~cstr~"]");
+		}
+		for (int j=0; j<itemCount; j++) {
+            auto jstr = to!(String)(j);
+			TreeItem item2 = new TreeItem(item1, DWT.NONE);
+			item2.setText("item ["~istr~" "~jstr~"]");
+			for (int c=1; c<columnCount; c++) {
+                auto cstr = to!(String)(c);
+				item2.setText(c, "item ["~istr~" "~jstr~"-"~cstr~"]");
+			}
+			for (int k=0; k<itemCount; k++) {
+                auto kstr = to!(String)(k);
+				TreeItem item3 = new TreeItem(item2, DWT.NONE);
+				item3.setText("item ["~istr~" "~jstr~" "~kstr~"]");
+				for (int c=1; c<columnCount; c++) {
+                    auto cstr = to!(String)(c);
+					item3.setText(c, "item ["~istr~" "~jstr~" "~kstr~"-"~cstr~"]");
+				}
+			}
+		}
+	}
+
+	/*
+	 * NOTE: MeasureItem, PaintItem and EraseItem are called repeatedly.
+	 * Therefore, it is critical for performance that these methods be
+	 * as efficient as possible.
+	 */
+	tree.addListener(DWT.EraseItem, new class Listener {
+		public void handleEvent(Event event) {
+			event.detail &= ~DWT.HOT;
+			if ((event.detail & DWT.SELECTED) != 0) {
+				GC gc = event.gc;
+				Rectangle area = tree.getClientArea();
+				/*
+				 * If you wish to paint the selection beyond the end of
+				 * last column, you must change the clipping region.
+				 */
+				int columnCount = tree.getColumnCount();
+				if (event.index == columnCount - 1 || columnCount == 0) {
+					int width = area.x + area.width - event.x;
+					if (width > 0) {
+						Region region = new Region();
+						gc.getClipping(region);
+						region.add(event.x, event.y, width, event.height); 
+						gc.setClipping(region);
+						region.dispose();
+					}
+				}
+				gc.setAdvanced(true);
+				if (gc.getAdvanced()) gc.setAlpha(127);								
+				Rectangle rect = event.getBounds();
+				Color foreground = gc.getForeground();
+				Color background = gc.getBackground();
+				gc.setForeground(display.getSystemColor(DWT.COLOR_RED));
+				gc.setBackground(display.getSystemColor(DWT.COLOR_LIST_BACKGROUND));
+				gc.fillGradientRectangle(0, rect.y, 500, rect.height, false);
+				// restore colors for subsequent drawing
+				gc.setForeground(foreground);
+				gc.setBackground(background);
+				event.detail &= ~DWT.SELECTED;					
+			}						
+		}
+	});		
+	for (int i=0; i<columnCount; i++) {
+		tree.getColumn(i).pack();
+	}	
+	tree.setSelection(tree.getItem(0));
+	shell.setSize(500, 200);
+	shell.open();
+	while (!shell.isDisposed()) {
+		if (!display.readAndDispatch()) display.sleep();
+	}
+	display.dispose();	
+}