| /******************************************************************************* |
| * Copyright (c) 2018 Red Hat and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Red Hat - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.tests.gtk.snippets; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.GC; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.swt.widgets.Tree; |
| import org.eclipse.swt.widgets.TreeColumn; |
| import org.eclipse.swt.widgets.TreeItem; |
| |
| public class Bug535124_TreeSelection { |
| |
| public static void main(String[] args) { |
| Display display = new Display (); |
| Shell shell = new Shell(display); |
| final Color red = display.getSystemColor(SWT.COLOR_RED); |
| final Color yellow = display.getSystemColor(SWT.COLOR_YELLOW); |
| final Tree tree = new Tree(shell, SWT.FULL_SELECTION); |
| tree.setHeaderVisible(true); |
| new TreeColumn(tree, SWT.NONE).setWidth(100); |
| new TreeColumn(tree, SWT.NONE).setWidth(100); |
| new TreeColumn(tree, SWT.NONE).setWidth(100); |
| for (int i = 0; i < 5; i++) { |
| TreeItem item = new TreeItem(tree, SWT.NONE); |
| item.setText(0, "item " + i + " col 0"); |
| item.setText(1, "item " + i + " col 1"); |
| item.setText(2, "item " + i + " col 2"); |
| } |
| tree.pack(); |
| tree.addListener(SWT.EraseItem, event -> { |
| event.detail &= ~SWT.HOT; |
| if ((event.detail & SWT.SELECTED) == 0) { |
| return; /* item not selected */ |
| } |
| int clientWidth = tree.getClientArea().width; |
| GC gc = event.gc; |
| Color oldForeground = gc.getForeground(); |
| Color oldBackground = gc.getBackground(); |
| gc.setForeground(red); |
| gc.setBackground(yellow); |
| gc.fillGradientRectangle(0, event.y, clientWidth, event.height, false); |
| gc.setForeground(oldForeground); |
| gc.setBackground(oldBackground); |
| event.detail &= ~SWT.SELECTED; |
| }); |
| shell.pack(); |
| shell.open(); |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) |
| display.sleep(); |
| } |
| display.dispose(); |
| } |
| |
| } |