放大Cordova的特定区域

Question

下面的代码可以放大我的cordova应用。是否可以修改代码和缩放特定区域，如仅缩放图像而不是整个html体？

MainActivity.Java

import android.os.Bundle;
import org.apache.cordova.*;

import android.webkit.WebView;
import android.webkit.WebSettings;

public class MainActivity extends CordovaActivity
  {
  @Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    // Set by <content src="index.html" /> in config.xml
    loadUrl(launchUrl);

     WebView webView = (WebView) appView.getEngine().getView();
    WebSettings settings = webView.getSettings();

    settings.setBuiltInZoomControls(true);
    settings.setDefaultZoom(WebSettings.ZoomDensity.MEDIUM);
    settings.setSupportZoom(true);

}
}