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changeset 84:398aa64a7243

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Two new snippets -- don't quite work yet though.
author Bill Baxter <bill@billbaxter.com>
date Sat, 17 May 2008 13:06:43 +0900
parents b7e2d67d5efa
children fa286c85e7b8
files snippets/dsss.conf snippets/tree/Snippet220.d snippets/treeeditor/Snippet111.d
diffstat 3 files changed, 238 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/snippets/dsss.conf	Fri May 16 23:43:38 2008 +0200
+++ b/snippets/dsss.conf	Sat May 17 13:06:43 2008 +0900
@@ -58,6 +58,8 @@
 [tray/Snippet143.d]
 [tree/Snippet8.d]
 [tree/Snippet15.d]
+[tree/Snippet220.d]
+[treeeditor/Snippet111.d]
 
 version(Derelict){
     [opengl]
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/snippets/tree/Snippet220.d	Sat May 17 13:06:43 2008 +0900
@@ -0,0 +1,102 @@
+/*******************************************************************************
+ * 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 dwtsnippets.tree.Snippet220;
+
+/* 
+ * Tree example snippet: Images on the right side of the TreeItem
+ *
+ * For a detailed explanation of this snippet see
+ * http://www.eclipse.org/articles/Article-CustomDrawingTableAndTreeItems/customDraw.htm#_example5
+ *
+ * For a list of all SWT example snippets see
+ * http://www.eclipse.org/swt/snippets/
+ * 
+ * @since 3.2
+ */
+
+import dwt.DWT;
+import dwt.graphics.Image;
+import dwt.graphics.GC;
+import dwt.widgets.Display;
+import dwt.widgets.Shell;
+import dwt.widgets.Listener;
+import dwt.widgets.Event;
+import dwt.widgets.Tree;
+import dwt.widgets.TreeItem;
+
+import tango.util.Convert;
+
+import tango.io.Stdout;
+
+void main() {
+	Display display = new Display();
+	Shell shell = new Shell(display);
+	shell.setBounds(10, 10, 350, 200);
+	Image xImage = new Image (display, 16, 16);
+	GC gc = new GC(xImage);
+	gc.setForeground(display.getSystemColor(DWT.COLOR_RED));
+	gc.drawLine(1, 1, 14, 14);
+	gc.drawLine(1, 14, 14, 1);
+	gc.drawOval(2, 2, 11, 11);
+	gc.dispose();
+	const int IMAGE_MARGIN = 2;
+	final Tree tree = new Tree(shell, DWT.CHECK);
+	tree.setBounds(10, 10, 300, 150);
+	TreeItem item = new TreeItem(tree, DWT.NONE);
+	item.setText("root item");
+	for (int i = 0; i < 4; i++) {
+		TreeItem newItem = new TreeItem(item, DWT.NONE);
+		newItem.setText("descendent " ~ to!(char[])(i));
+		if (i % 2 == 0) newItem.setData(xImage);
+		item.setExpanded(true);
+		item = newItem;
+	}
+
+	/*
+	 * NOTE: MeasureItem and PaintItem are called repeatedly.  Therefore it is
+	 * critical for performance that these methods be as efficient as possible.
+	 */
+	tree.addListener(DWT.MeasureItem, new class Listener {
+		public void handleEvent(Event event) {
+            Stdout("measure").newline;
+			TreeItem item = cast(TreeItem)event.item;
+			Image trailingImage = cast(Image)item.getData();
+			if (trailingImage !is null) {
+                Stdout(" - measure image").newline;
+				event.width += trailingImage.getBounds().width + IMAGE_MARGIN;
+			}
+		}
+	});
+	tree.addListener(DWT.PaintItem, new class Listener {
+		public void handleEvent(Event event) {
+            Stdout("paint").newline;
+			TreeItem item = cast(TreeItem)event.item;
+			Image trailingImage = cast(Image)item.getData();
+			if (trailingImage !is null) {
+                Stdout(" - draw image").newline;
+				int x = event.x + event.width + IMAGE_MARGIN;
+				int itemHeight = tree.getItemHeight();
+				int imageHeight = trailingImage.getBounds().height;
+				int y = event.y + (itemHeight - imageHeight) / 2;
+				event.gc.drawImage(trailingImage, x, y);
+			}
+		}
+	});
+
+	shell.open();
+	while (!shell.isDisposed()) {
+		if (!display.readAndDispatch()) display.sleep();
+	}
+	xImage.dispose();
+	display.dispose();
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/snippets/treeeditor/Snippet111.d	Sat May 17 13:06:43 2008 +0900
@@ -0,0 +1,134 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2004 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 dwtsnippets.treeeditor.Snippet111;
+
+/*
+ * TreeEditor example snippet: edit the text of a tree item (in place, fancy)
+ *
+ * For a list of all SWT example snippets see
+ * http://www.eclipse.org/swt/snippets/
+ */
+import dwt.DWT;
+import dwt.graphics.Color;
+import dwt.graphics.Rectangle;
+import dwt.graphics.GC;
+import dwt.widgets.Display;
+import dwt.widgets.Shell;
+import dwt.widgets.Widget;
+import dwt.widgets.Composite;
+import dwt.widgets.Tree;
+import dwt.widgets.TreeItem;
+import dwt.widgets.Text;
+import dwt.widgets.Listener;
+import dwt.widgets.Event;
+import dwt.layout.FillLayout;
+import dwt.custom.TreeEditor;
+
+import dwt.dwthelper.utils : String, substring, Math;
+import std.stdio;
+
+import tango.util.Convert;
+
+void main () {
+	final Display display = new Display ();
+	final Color black = display.getSystemColor (DWT.COLOR_BLACK);
+	Shell shell = new Shell (display);
+	shell.setLayout (new FillLayout ());
+	final Tree tree = new Tree (shell, DWT.BORDER);
+	for (int i=0; i<16; i++) {
+		TreeItem itemI = new TreeItem (tree, DWT.NONE);
+		itemI.setText ("Item " ~ to!(char[])(i));
+		for (int j=0; j<16; j++) {
+			TreeItem itemJ = new TreeItem (itemI, DWT.NONE);
+			itemJ.setText ("Item " ~ to!(char[])(j) );
+		}
+	}
+	final TreeItem [] lastItem = new TreeItem [1];
+	final TreeEditor editor = new TreeEditor (tree);
+	tree.addListener (DWT.Selection, new class Listener {
+		public void handleEvent (Event event) {
+			final TreeItem item = cast(TreeItem) event.item;
+			if (item !is null && item is lastItem [0]) {
+				bool showBorder = true;
+				final Composite composite = new Composite (tree, DWT.NONE);
+				if (showBorder) composite.setBackground (black);
+				final Text text = new Text (composite, DWT.NONE);
+				final int inset = showBorder ? 1 : 0;
+				composite.addListener (DWT.Resize, new class Listener {
+					public void handleEvent (Event e) {
+						Rectangle rect = composite.getClientArea ();
+						text.setBounds (rect.x + inset, rect.y + inset, rect.width - inset * 2, rect.height - inset * 2);
+					}
+				});
+				Listener textListener = new class Listener {
+					public void handleEvent (Event e) {
+						switch (e.type) {
+                        case DWT.FocusOut: {
+                            item.setText (text.getText ());
+                            composite.dispose ();
+                        }
+                        break;
+                        case DWT.Verify: {
+                            String newText = text.getText ();
+                            String leftText = newText.substring (0, e.start);
+                            String rightText = newText.substring (e.end, newText.length);
+                            GC gc = new GC (text);
+                            Point size = gc.textExtent (leftText ~ e.text ~ rightText);
+                            gc.dispose ();
+                            size = text.computeSize (size.x, DWT.DEFAULT);
+                            editor.horizontalAlignment = DWT.LEFT;
+                            Rectangle itemRect = item.getBounds (), rect = tree.getClientArea ();
+                            editor.minimumWidth = Math.max (size.x, itemRect.width) + inset * 2;
+                            int left = itemRect.x, right = rect.x + rect.width;
+                            editor.minimumWidth = Math.min (editor.minimumWidth, right - left);
+                            editor.minimumHeight = size.y + inset * 2;
+                            editor.layout ();
+                        }
+                        break;
+                        case DWT.Traverse: {
+                            switch (e.detail) {
+                            case DWT.TRAVERSE_RETURN:
+                                item.setText (text.getText ());
+                                //FALL THROUGH
+                            case DWT.TRAVERSE_ESCAPE:
+                                composite.dispose ();
+                                e.doit = false;
+                            default:
+                                //no-op
+                            }
+                            break;
+                        }
+                        default:
+                        // no-op
+						}
+					}
+				};
+				text.addListener (DWT.FocusOut, textListener);
+				text.addListener (DWT.Traverse, textListener);
+				text.addListener (DWT.Verify, textListener);
+				editor.setEditor (composite, item);
+				text.setText (item.getText ());
+				text.selectAll ();
+				text.setFocus ();
+			}
+			lastItem [0] = item;
+		}
+	});
+	shell.pack ();
+	shell.open ();
+	while (!shell.isDisposed()) {
+		if (!display.readAndDispatch ()) display.sleep ();
+	}
+	display.dispose ();
+}
+