[英]JavaFX How to Vertically Align CheckBox in an HBox in a GridPane
首先,生成说明问题的UI的代码:
package test;
import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.geometry.VPos;
import javafx.scene.Scene;
import javafx.scene.control.CheckBox;
import javafx.scene.control.ComboBox;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;
public class Main extends Application {
public static void main(final String[] args) throws Exception {
launch(args);
}
@Override
public void start(final Stage window) throws Exception {
// Create a VBox to hold the table and button
final GridPane root = new GridPane();
root.setHgap(5);
root.setVgap(5);
// Add a combo-box to the first row
final ComboBox<String> dropdown1 = new ComboBox<>();
dropdown1.getItems().add("Option 1");
dropdown1.getSelectionModel().selectFirst();
root.add(dropdown1, 0, 0);
// Add a checkbox to the first row
final CheckBox checkbox1 = new CheckBox("CB Text 1");
root.add(checkbox1, 1, 0);
// Add a combo-box to the second row
final ComboBox<String> dropdown2 = new ComboBox<>();
dropdown2.getItems().add("Option 2");
dropdown2.getSelectionModel().selectFirst();
root.add(dropdown2, 0, 1);
// Add a checkbox, wrapped in an HBox, to the second row
final CheckBox checkbox2 = new CheckBox("CB Text 2");
final HBox hbox = new HBox(checkbox2);
hbox.setAlignment(Pos.BASELINE_LEFT);
root.add(hbox, 1, 1);
GridPane.setValignment(hbox, VPos.BASELINE);
// Show the JavaFX window
final Scene scene = new Scene(root);
window.setScene(scene);
window.show();
}
}
上面的代码生成以下UI(Java 8u102 Windows x64):
如图所示,第二行中CheckBox
的垂直对齐方式与ComboBox
对齐。 我希望所有内容都在文本基线上对齐。 如何在不删除HBox
情况下在GridPane
获得第二行以匹配第一行的对齐方式?
将填充有问题的单元格的代码修改为以下代码:
// Add a checkbox, wrapped in an HBox, to the second row
final CheckBox checkbox2 = new CheckBox("CB Text 2");
final HBox hbox = new HBox(checkbox2);
hbox.setFillHeight(true); // Added this
hbox.setAlignment(Pos.CENTER_LEFT);// Changed the alignment to center-left
root.add(hbox, 1, 1);
//GridPane.setValignment(hbox, VPos.BASELINE); This is unnecessary
此代码将强制HBox
与行高度相同,然后将其中的CheckBox
垂直居中。
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