改变swt中table选中行的颜色

最新推荐文章于 2023-05-16 10:32:49 发布

原创最新推荐文章于 2023-05-16 10:32:49 发布 · 238 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#Eclipse #performance

Eclipse 专栏收录该内容

12 篇文章

订阅专栏

本文介绍了一个使用Eclipse SWT库创建自定义表格样式的Java示例程序。该程序演示了如何设置表格的基本属性，并通过监听SWT.EraseItem事件来实现表格行被选中时的背景颜色及文字颜色变化。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;

public class Example3 {

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 Table table = new Table(shell, SWT.FULL_SELECTION);
	table.setHeaderVisible(true);
	new TableColumn(table, SWT.NONE).setWidth(100);
	new TableColumn(table, SWT.NONE).setWidth(100);
	new TableColumn(table, SWT.NONE).setWidth(100);
	for (int i = 0; i < 5; i++) {
		TableItem item = new TableItem(table, SWT.NONE);
		item.setText(0, "item " + i + " col 0");
		item.setText(1, "item " + i + " col 1");
		item.setText(2, "item " + i + " col 2");
	}
	table.pack();

	/*
	 * NOTE: EraseItem is called repeatedly.  Therefore it is critical
	 * for performance that this method be as efficient as possible.
	 */
	table.addListener(SWT.EraseItem, new Listener() {
		public void handleEvent(Event event) {
			event.detail &= ~SWT.HOT;
			if ((event.detail & SWT.SELECTED) == 0) return; /* item not selected */
			int clientWidth = table.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();
}
}