Transparent background in the WebView in JavaFX

Question

I need to show my webview content over parent background pattern. Is there a straightforward way to do it?

Answer 1

Webview transparent I get a good solution here : https://javafx-jira.kenai.com/browse/RT-29186 read comments Harry Hur

    import java.lang.reflect.Field;
    import javafx.application.Application;
    import javafx.beans.value.ChangeListener;
    import javafx.beans.value.ObservableValue; 
    import javafx.scene.Scene;
    import javafx.scene.web.WebEngine;
    import javafx.scene.web.WebView;
    import javafx.stage.Stage;
    import javafx.stage.StageStyle; 
    import org.w3c.dom.Document; `

    public class TestTranparentApps extends Application { 

    @Override
    public void start(Stage primaryStage) {
        new WebPage(primaryStage);
        primaryStage.show(); 
    } 

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }

    class WebPage{

        WebView webview;
        WebEngine webengine;
        public WebPage(Stage mainstage){
            webview = new WebView();
            webengine = webview.getEngine();

            Scene scene = new Scene(webview);
            scene.setFill(null);

            mainstage.setScene(scene);
            mainstage.initStyle(StageStyle.TRANSPARENT);
            mainstage.setWidth(700);
            mainstage.setHeight(100);

            webengine.documentProperty().addListener(new DocListener());
            webengine.loadContent("Test Transparent");
        }

        class DocListener implements ChangeListener{  
            @Override
            public void changed(ObservableValue observable, Document oldValue, Document newValue) {
                try {

                    // Use reflection to retrieve the WebEngine's private 'page' field. 
                    Field f = webengine.getClass().getDeclaredField("page"); 
                    f.setAccessible(true); 
                    com.sun.webkit.WebPage page = (com.sun.webkit.WebPage) f.get(webengine);  
                    page.setBackgroundColor((new java.awt.Color(0, 0, 0, 0)).getRGB()); 

                } catch (Exception e) {
                }

            }
        }  
    } 
}