How Can I Customize the Appearance of a JavaFX Progress Bar?

Styling JavaFX Progress Bar

Introduction

Customizing the appearance of UI components enhances the user experience and aligns them with the application's aesthetics. This article addresses the customization of the JavaFX ProgressBar component.

Setting the Progress Bar Color

Use the -fx-background-color property to define the color of the progress bar. The inner bar can be colored using the -fx-accent property.

.progress-bar {
    -fx-background-color: lightblue;
    -fx-accent: red;
}

Setting the Progress Bar Background Color

To set the background color of the progress bar separately from its primary color, use the -fx-control-inner-background property.

.progress-bar > .track {
    -fx-control-inner-background: lightgray;
}

Adding Custom Text on Top of the Progress Bar

To add a text node on top of the progress bar, create a custom Label and position it absolutely over the bar.

Label progressText = new Label("Progress: 50%");
progressText.setLayoutX(getProgressBar().getLayoutX() + getProgressBar().getWidth() / 2);
progressText.setLayoutY(getProgressBar().getLayoutY() + 2);

Additional Customizations

Changing Progress Bar Height

.progress-bar .bar { 
    -fx-padding: 1px; 
    -fx-background-insets: 0; 
}

CSS Class Names and Commands

CSS class names and commands for the ProgressBar component are available in the JavaFX default style sheet, e.g., modena.css (Java 8) or caspian.css (Java 7).

CSS Reference Guide

For general information on JavaFX CSS usage, refer to the JavaFX CSS Reference Guide.

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