First, you'll need to set up your JavaFX scene with a button and a panel (or any container) for your filters.
Button filtersButton = new Button("Filters");
filtersButton.setId("filters-button"); // Set an ID for CSS targeting
VBox filtersContent = new VBox();
filtersContent.setId("filters-content");
filtersContent.setVisible(false); // Initially hidden
// Add filters to filtersContent VBox here, make filtersContent visible when filtersButton is hovered over
filtersButton.setOnMouseEntered(e -> filtersContent.setVisible(true));
filtersButton.setOnMouseExited(e -> filtersContent.setVisible(false));
Then CSS
filters-button {
/* Button styling */
}
filters-content {
/* Filters styling */
/* You can add transitions for smooth appearance */
-fx-transition: all 0.3s ease;
}
Additionally you have to link the javafx to the css
scene.getStylesheets().add("style.css");