ScrollBar 宽度基于 ScrollPane 的字体大小。
将 JScrollPane 的字体大小设置为较大的值,并(如果需要)将 JScrollPane 内容节点的字体大小恢复为正常值。
ScrollPane scrollPane = new ScrollPane();
scrollPane.setContent(content);
scrollPane.setStyle("-fx-font-size: 40px;"); // set the font size to something big.
content.setStyle("-fx-font-size: 11px;"); // reset the region's font size to the default.
这是一个完整的可执行示例,基于我对之前的回答同一主题的论坛问题 https://forums.oracle.com/forums/thread.jspa?messageID=10409262.
import javafx.application.Application;
import javafx.collections.*;
import javafx.scene.*;
import javafx.stage.Stage;
import javafx.scene.chart.*;
import javafx.scene.control.ScrollPane;
import javafx.scene.layout.Region;
public class BigScrollBars extends Application {
@Override public void start(Stage stage) {
// create a chart.
ObservableList<PieChart.Data> pieChartData =
FXCollections.observableArrayList(
new PieChart.Data("Grapefruit", 13),
new PieChart.Data("Oranges", 25),
new PieChart.Data("Plums", 10),
new PieChart.Data("Pears", 22),
new PieChart.Data("Apples", 30)
);
final PieChart chart = new PieChart(pieChartData);
chart.setTitle("Imported Fruits");
chart.setMinSize(Region.USE_PREF_SIZE, Region.USE_PREF_SIZE);
chart.setPrefSize(800,600);
// create a scrollpane.
ScrollPane scrollPane = new ScrollPane();
scrollPane.setContent(chart);
scrollPane.setStyle("-fx-font-size: 40px;"); // set the font size to something big.
chart.setStyle("-fx-font-size: 11px;"); // reset the region's font size to the default.
// show the scene.
stage.setScene(new Scene(scrollPane, 400, 300));
stage.show();
}
public static void main(String[] args) { launch(args); }
}