Note: Advice in this article will only work for JxBrowser 6. See the corresponding article for JxBrowser 7 here.(注意：本文中的建议仅适用于JxBrowser6，JxBrowser7相应文章请点击这里。)


With JxBrowser you can zoom the web page content using Browser.setZoomLevel(double zoomLevel), Browser.zoomIn(), Browser.zoomOut(), Browser.zoomReset() methods. Please note that zoom level can be applied only for the completely loaded web page. You need to wait until the web page is loaded completely and only then you can zoom it: (使用JxBrowser，您可以使用Browser.setZoomLevel（double zoomLevel），Browser.zoomIn（），Browser.zoomOut（），Browser.zoomReset（）方法缩放网页内容。请注意，缩放级别只能应用于完全加载的网页。您需要等待直到网页完全加载，然后才能缩放它：)

browser.addLoadListener(new LoadAdapter() {
    @Override
    public void onFinishLoadingFrame(FinishLoadingEvent event) {
        if (event.isMainFrame()) {
            event.getBrowser().setZoomLevel(2.0);
        }
    }
});

The zoom level is configured for each domain separately, so if you set zoom level for the a.com web page, it will not be applied for the b.com web page.(缩放级别是为每个域分别配置的，因此，如果您为a.com网页设置了缩放级别，则它将不会应用于b.com网页。)

import com.teamdev.jxbrowser.chromium.Browser;
import com.teamdev.jxbrowser.chromium.BrowserContext;
import com.teamdev.jxbrowser.chromium.ZoomService;
import com.teamdev.jxbrowser.chromium.events.FinishLoadingEvent;
import com.teamdev.jxbrowser.chromium.events.LoadAdapter;
import com.teamdev.jxbrowser.chromium.events.ZoomEvent;
import com.teamdev.jxbrowser.chromium.events.ZoomListener;
import com.teamdev.jxbrowser.chromium.swing.BrowserView;

import javax.swing.*;
import java.awt.*;

/**
 * The sample demonstrates how to modify zoom level for a
 * currently loaded web page. Zoom level will be applied to
 * the currently loaded web page only. If you navigate to
 * a different domain, its zoom level will be 100% until you
 * modify it.
 */
public class ZoomSample {
    public static void main(String[] args) {
        Browser browser = new Browser();
        BrowserView browserView = new BrowserView(browser);

        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frame.add(browserView, BorderLayout.CENTER);
        frame.setSize(700, 500);
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);

        // Listen to zoom changed events
        BrowserContext context = browser.getContext();
        ZoomService zoomService = context.getZoomService();
        zoomService.addZoomListener(new ZoomListener() {
            public void onZoomChanged(ZoomEvent event) {
                System.out.println("event.getURL() = " + event.getURL());
                System.out.println("event.getZoomLevel() = " + event.getZoomLevel());
            }
        });

        // Modify zoom level every time when main frame is loaded.
        browser.addLoadListener(new LoadAdapter() {
            @Override
            public void onFinishLoadingFrame(FinishLoadingEvent event) {
                if (event.isMainFrame()) {
                    event.getBrowser().setZoomLevel(2.0);
                }
            }
        });
        browser.loadURL("http://www.teamdev.com");
    }
}