Mercurial > projects > dwt-samples
view snippets/tree/Snippet220.d @ 120:1f0a7a472680
fix rm snippets from module statements.
author | Frank Benoit <benoit@tionex.de> |
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date | Sun, 20 Jul 2008 19:17:23 +0200 |
parents | 4095b64d16f5 |
children |
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/******************************************************************************* * 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 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; version(JIVE){ import jive.stacktrace; } void main() { const int IMAGE_MARGIN = 2; void handleEventMeasureItem(Event event) { TreeItem item = cast(TreeItem)event.item; Image trailingImage = cast(Image)item.getData(); if (trailingImage !is null) { int w1 = event.width; event.width += trailingImage.getBounds().width + IMAGE_MARGIN; int w2 = event.width; } } void handleEventPaintItem(Event event, Tree tree ) { TreeItem item = cast(TreeItem)event.item; Image trailingImage = cast(Image)item.getData(); if (trailingImage !is null) { 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); } } 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(); 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, dgListener( &handleEventMeasureItem )); tree.addListener(DWT.PaintItem,dgListener( &handleEventPaintItem, tree )); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } xImage.dispose(); display.dispose(); }