All my JavaFX TextFields have lines in them

Solution 1:

This is a known unresolved bug.

The problem seems to be that it isn't reproducible for the developers.

In the comments of the bug report the use of a jvm parameter is suggested:

-Dprism.disableRegionCaching=true

However, if anyone is able to reproduce this very rare bug, my suggestion is to:

• modify the modena css file until the bug is resolved and share that information. it may help since caspian seems to work.
• if necessary debug into the javafx source to isolate the issue. however, the problem might run deeper, but it's worth a shot

Solution 2:

Emm... I am not 100% sure cause I don't have the effect on my jvm though I have Linux platform; But still I tried to emulate (? not sure I succeeded pretty well) anyways I guess the issue you describe may be really related to

• a) font
• b) repaint problem

The code you represented I modified a bit to show what happens to gridpanel lines if components located in "some" order;

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
import javafx.stage.Stage;


public class BlackLineIssueJavaFXApplication1 extends Application {



    @Override
    public void start(Stage primaryStage) {

        System.setProperty("javafx.userAgentStylesheetUrl", "Modena");
        //Modena,caspian
        primaryStage.setTitle("JavaFX Welcome");

        GridPane grid = new GridPane();
        grid.setAlignment(Pos.CENTER);
        grid.setHgap(10);
        grid.setVgap(10);
        grid.setPadding(new Insets(25, 25, 25, 25));
//        grid.setGridLinesVisible(false);//<---

        Text scenetitle = new Text("Welcome");//original
//        Label scenetitle = new Label("Welcome");//modified
        scenetitle.setFont(Font.font("Tahoma", FontWeight.NORMAL, 20));//original
//        scenetitle.setFont(Font.font("Verdana", FontWeight.LIGHT, 30));//modified
        grid.add(scenetitle, 0, 0, 2, 1);//original
//        grid.add(scenetitle, 0, 0);//modified


        Label userName = new Label("User Name:");//original
//        Text userName = new Text("User Name:");
//        userName.setFont(Font.font("Tahoma", FontWeight.NORMAL, 11));

//        grid.add(userName, 0, 1);//original
        grid.add(userName, 0, 1,1,2);//modified


        grid.setGridLinesVisible(true);//<---

        TextField userTextField = new TextField();  
//        userTextField.setFont(Font.font("Tahoma", FontWeight.NORMAL, 20));//modified
        userTextField.setOpacity(0.5);//<----

//        grid.add(userTextField, 1, 1);//original
        grid.add(userTextField, 1, 1,1,2);//modified

        grid.setGridLinesVisible(false);//<---



        Button btn = new Button("Sign in");
        HBox hbBtn = new HBox(10);

        hbBtn.setAlignment(Pos.BOTTOM_RIGHT);
        hbBtn.getChildren().add(btn);
        grid.add(hbBtn, 1, 4);//original
        //grid.add(hbBtn, 1, 3);//modified

        final Text actiontarget = new Text();
        grid.add(actiontarget, 1, 6);

        Scene scene = new Scene(grid, 300, 275);
        primaryStage.setScene(scene);

        primaryStage.show();
    }

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

}

The running app looks like that :

Image A :

...so the black line appears in text field in distance about 10px maybe just because the Vgap set to 10; Moreover, see the "welcome" text is crossed but with vertical lines; I tested if "not to use font" for scenetitle it located correctly (see image);

Image B

So something is maybe wrong with GridPane I guess; Maybe the default GridPane has "lines visible" or something but after components added the lines "disposed" but because of TextField which should contain "text" with "font" (see image A vertical lines cross text because of the font) the repaint doesn't work properly and you can see the black line at the top as image A shows; I cannot emulate the effect totally but still I may suggest where the "un-disposed" line may come from or something :)

I'll try to analyse a bit further anyways the info I describe in this answer may help you to find where to start debugging;

If you need some additional information please let me know;

Good luck :)

toolkit I used to test :

• jdk-1.0.8_25
• jre-1.8.0_60 (Linux x64)
• ide : netbeans 8.0.1