Question

我的问题是将textarea的高度设置为tab-content-size，但textarea只占用了部分内容。

我为maxHeight-property和prefHeight尝试了不同的值maxvalue，但没有成功。宽度没有问题，它符合标签内容。谢谢你的帮助！

主程序：

public class Main extends Application {
    public static void main(String[] args) {
        Application.launch(Main.class, (java.lang.String[])null);
    } 
    @Override
    public void start(Stage primaryStage) {
        String resourcePath = "resources/fxml/ExampleFZ.fxml";
        URL location = Main.class.getResource(resourcePath);
        try {
            VBox page = (VBox) FXMLLoader.load(location);
            Scene scene = new Scene(page);
            primaryStage.setScene(scene);
            primaryStage.setTitle("Example FZ");
            primaryStage.show();            
        } catch(Exception ex)  {Logger.getLogger(Main.class.getName()).log(Level.SEVERE,null, ex);
        }
    }
}

FXML代码：

<VBox fx:id="rootBox" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" xmlns="http://javafx.com/javafx/8.0.121" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.ExampleFZcontroller">
<children>
  <GridPane>
    <columnConstraints>
      <ColumnConstraints hgrow="SOMETIMES" maxWidth="70.0" minWidth="70.0" prefWidth="70.0" />
      <ColumnConstraints hgrow="SOMETIMES" />
        <ColumnConstraints hgrow="SOMETIMES" />
    </columnConstraints>
    <rowConstraints>
      <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
    </rowConstraints>
     <children>
        <Button fx:id="myButton" mnemonicParsing="false" onAction="#myButtonClicked" text="Button" GridPane.halignment="CENTER" />            
     </children>
  </GridPane>
  <TabPane fx:id="myTabPane" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" tabClosingPolicy="UNAVAILABLE">
     <tabs>
        <Tab fx:id="myTab" text="MyTab">
           <content>
              <TextArea fx:id="myTextArea" maxHeight="1.7976931348623157E308" text="myText" />
           </content></Tab>
     </tabs></TabPane>
</children>
<stylesheets>
  <URL value="@../css/ExampleFZ.css" />
</stylesheets>
</VBox>

控制器代码：

public class ExampleFZcontroller {
    @FXML
    VBox rootBox;
    @FXML
    private Button myButton;
    @FXML
    private TabPane myTabPane;
    @FXML
    private Tab myTab;
    @FXML
    private TextArea myTextArea;    
    @FXML
    void myButtonClicked(ActionEvent event) {
        myTextArea.appendText("\nonce again");
    }
}

css文件：

.tab-header-background {
   -fx-background-color: grey ;                             
.text-area  {
   -fx-border-width: 5px;
   -fx-border-color: red ;
}[enter image description here][1]

这是结果（见图）：

Answer 1

文本区域正在填写标签的内容;问题是当窗口增加大小时，选项卡窗格不会增长。您可以使用VBox布局约束vgrow：

来解决此问题

<TabPane fx:id="myTabPane" VBox.vgrow="ALWAYS" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" tabClosingPolicy="UNAVAILABLE">
    <tabs>
        <Tab fx:id="myTab" text="MyTab">
            <content>
                <TextArea fx:id="myTextArea" maxHeight="1.7976931348623157E308" 
                     text="myText" />
            </content>
         </Tab>
     </tabs>
</TabPane>

问题是将textarea高度设置为tab-content-size的高度

1 个答案: