Sample vertical progress bar.
class UpwardProgress {
private ProgressBar progressBar = new ProgressBar();
private Group progressHolder = new Group(progressBar);
public UpwardProgress(double width, double height) {
progressBar.setMinSize(StackPane.USE_PREF_SIZE, StackPane.USE_PREF_SIZE);
progressBar.setPrefSize(height, width);
progressBar.setMaxSize(StackPane.USE_PREF_SIZE, StackPane.USE_PREF_SIZE);
progressBar.getTransforms().setAll(
new Translate(0, height),
new Rotate(-90, 0, 0)
);
}
public ProgressBar getProgressBar() {
return progressBar;
}
public Group getProgressHolder() {
return progressHolder;
}
}
Used in a sample app.
import javafx.animation.*;
import javafx.application.Application;
import javafx.beans.property.*;
import javafx.scene.*;
import javafx.scene.canvas.*;
import javafx.scene.control.*;
import javafx.scene.image.PixelWriter;
import javafx.scene.layout.*;
import javafx.scene.paint.Color;
import javafx.scene.transform.*;
import javafx.stage.Stage;
import javafx.util.Duration;
import java.util.Random;
class UpwardProgress {
private ProgressBar progressBar = new ProgressBar();
private Group progressHolder = new Group(progressBar);
public UpwardProgress(double width, double height) {
progressBar.setMinSize(StackPane.USE_PREF_SIZE, StackPane.USE_PREF_SIZE);
progressBar.setPrefSize(height, width);
progressBar.setMaxSize(StackPane.USE_PREF_SIZE, StackPane.USE_PREF_SIZE);
progressBar.getTransforms().setAll(
new Translate(0, height),
new Rotate(-90, 0, 0)
);
}
public ProgressBar getProgressBar() {
return progressBar;
}
public Group getProgressHolder() {
return progressHolder;
}
}
public class StarCounter extends Application {
public static final Color INDIA_INK = Color.rgb(35, 39, 50);
private static final int CANVAS_SIZE = 400;
private static final int N_STARS = 1_000;
private final Canvas canvas = new Canvas(CANVAS_SIZE, CANVAS_SIZE);
private final Random random = new Random(42);
private final IntegerProperty visibleStars = new SimpleIntegerProperty(0);
private Timeline timeline;
@Override
public void start(final Stage stage) {
Group root = initProgress();
clearCanvas();
visibleStars.addListener((observable, oldValue, newValue) -> {
if (newValue.intValue() > oldValue.intValue()) {
addStars(newValue.intValue() - oldValue.intValue());
}
});
stage.setScene(
new Scene(
new HBox(canvas, root),
INDIA_INK
)
);
stage.show();
runSimulation();
stage.getScene().setOnMouseClicked(event -> {
resetSimulation();
runSimulation();
});
}
private Group initProgress() {
UpwardProgress upwardProgress = new UpwardProgress(15, 400);
ProgressIndicator bar = upwardProgress.getProgressBar();
bar.setStyle("-fx-base: skyblue; -fx-accent: gold;");
bar.progressProperty().bind(visibleStars.divide(N_STARS * 1.0));
return upwardProgress.getProgressHolder();
}
private void resetSimulation() {
clearCanvas();
if (timeline != null) {
timeline.stop();
timeline = null;
}
}
private void runSimulation() {
timeline = new Timeline(
new KeyFrame(
Duration.seconds(0),
new KeyValue(visibleStars, 0)
),
new KeyFrame(
Duration.seconds(10),
new KeyValue(visibleStars, N_STARS)
)
);
timeline.play();
}
private void clearCanvas() {
canvas.getGraphicsContext2D().setFill(INDIA_INK);
canvas.getGraphicsContext2D().fillRect(0, 0, CANVAS_SIZE, CANVAS_SIZE);
}
private void addStars(int nStarsToAdd) {
GraphicsContext context = canvas.getGraphicsContext2D();
PixelWriter writer = context.getPixelWriter();
for (int i = 0; i < nStarsToAdd; i++) {
writer.setColor(random.nextInt(CANVAS_SIZE), random.nextInt(CANVAS_SIZE), Color.GOLD);
}
}
public static void main(String[] args) {
launch(args);
}
}