我有一个带有两个TableColumns的TableView。左侧是一个宽列,需要能够显示最多30个字符的条目。右边是一个窄列,需要只能显示一个字符。但是,右栏的标题需要很长一段时间(这是必需的)。但是,我没有足够的空间来拥有一个像所需标题文本一样胖的列。如果我将右列与其标题文本一样宽,则左列中的数据将被截断。我希望右侧列的标题文本渗透到左侧的列中(不用担心它会进入左列的标题文本)。这可以通过设置我的TableView的一些fx css和/或一个或两个TableColumns来实现吗?
答案 0 :(得分:3)
这是一个示例,其中列标题“Long Last Name”渗透到其左侧的列标题中。
bleed.css
.column-header.left-header > .label {
-fx-alignment: baseline-left;
}
.column-header.bleed-header > .label {
-fx-alignment: baseline-right;
-fx-padding: 0 3 0 0;
}
启用“出血”的代码段
TableColumn<Person, String> lastNameCol = new TableColumn<>();
lastNameCol.setMinWidth(80);
lastNameCol.setCellValueFactory(
new PropertyValueFactory<>("lastName"));
lastNameCol.getStyleClass().add("bleed-header");
Label headerLabel = new Label("Long Last Name");
headerLabel.setMinWidth(Control.USE_PREF_SIZE);
lastNameCol.setGraphic(headerLabel);
解决方案需要一些技巧:
提供标签图形可让您直接控制最小宽度(以防止标题标签过长时删除标题标签的默认行为。)
可执行代码示例
import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.collections.*;
import javafx.geometry.Insets;
import javafx.scene.*;
import javafx.scene.control.*;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;
public class TableViewHeaderBleed extends Application {
private TableView<Person> table = new TableView<>();
private final ObservableList<Person> data =
FXCollections.observableArrayList(
new Person("Jacob", "Smith", "jacob.smith@example.com"),
new Person("Isabella", "Johnson", "isabella.johnson@example.com"),
new Person("Ethan", "Williams", "ethan.williams@example.com"),
new Person("Emma", "Jones", "emma.jones@example.com"),
new Person("Michael", "Brown", "michael.brown@example.com")
);
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage stage) {
Scene scene = new Scene(new Group());
stage.setTitle("Table View Sample");
table.setPrefHeight(200);
final Label label = new Label("Address Book");
label.setFont(new Font("Arial", 20));
TableColumn<Person, String> firstNameCol = new TableColumn<>("First Name");
firstNameCol.setMinWidth(100);
firstNameCol.setCellValueFactory(
new PropertyValueFactory<>("firstName"));
firstNameCol.getStyleClass().add("left-header");
TableColumn<Person, String> lastNameCol = new TableColumn<>();
lastNameCol.setMinWidth(80);
lastNameCol.setCellValueFactory(
new PropertyValueFactory<>("lastName"));
lastNameCol.getStyleClass().add("bleed-header");
Label headerLabel = new Label("Long Last Name");
headerLabel.setMinWidth(Control.USE_PREF_SIZE);
lastNameCol.setGraphic(headerLabel);
TableColumn<Person, String> emailCol = new TableColumn<>("Email");
emailCol.setMinWidth(100);
emailCol.setCellValueFactory(
new PropertyValueFactory<>("email"));
table.setItems(data);
table.getColumns().addAll(firstNameCol, lastNameCol, emailCol);
final VBox vbox = new VBox();
vbox.setSpacing(5);
vbox.setPadding(new Insets(10));
vbox.getChildren().addAll(label, table);
((Group) scene.getRoot()).getChildren().addAll(vbox);
scene.getStylesheets().add(getClass().getResource("bleed.css").toExternalForm());
stage.setScene(scene);
stage.show();
}
public static class Person {
private final SimpleStringProperty firstName;
private final SimpleStringProperty lastName;
private final SimpleStringProperty email;
private Person(String fName, String lName, String email) {
this.firstName = new SimpleStringProperty(fName);
this.lastName = new SimpleStringProperty(lName);
this.email = new SimpleStringProperty(email);
}
public String getFirstName() {
return firstName.get();
}
public void setFirstName(String fName) {
firstName.set(fName);
}
public String getLastName() {
return lastName.get();
}
public void setLastName(String fName) {
lastName.set(fName);
}
public String getEmail() {
return email.get();
}
public void setEmail(String fName) {
email.set(fName);
}
}
}