Working with Layouts in JavaFX Sample (original) (raw)

LayoutSizingAligning.java

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package layoutsizingaligning;

import java.util.Iterator; import javafx.application.Application; import javafx.geometry.HPos; import javafx.geometry.Insets; import javafx.geometry.Orientation; import javafx.scene.control.Control; import javafx.scene.Scene; import javafx.collections.FXCollections; import javafx.collections.ObservableList; import javafx.geometry.Pos; import javafx.scene.control.Button; import javafx.scene.control.Label; import javafx.scene.control.ListView; import javafx.scene.control.PasswordField; import javafx.scene.control.Tab; import javafx.scene.control.TabPane; import javafx.scene.control.TextField; import javafx.scene.layout.*; import javafx.stage.Stage;

/**

• Sample application that shows how the sized of controls can be managed.

• Sample is for demonstration purposes only, most controls are inactive. */ public class LayoutSizingAligning extends Application {

  // Define buttons here for access by multiple methods private Button btnApply = new Button("Apply"); private Button btnContinue = new Button("Continue"); private Button btnExit = new Button("Exit");

  /**

  • @param args the command line arguments */ public static void main(String[] args) { Application.launch(LayoutSizingAligning.class, args); }

  @Override public void start(Stage primaryStage) {

   // Make Exit button bigger by using larger font for label
   btnExit.setStyle("-fx-font-size: 15pt;");
   
   // Use tab pane with one tab for sizing UI and one tab for alignment UI
   TabPane tabs = new TabPane();
   Tab tabSize = new Tab();
   tabSize.setText("Sizing");
   tabSize.setContent(sizingSample());
   
   Tab tabAlign = new Tab();
   tabAlign.setText("Alignment");
   tabAlign.setContent(alignmentSample());
   
   tabs.getTabs().addAll(tabSize, tabAlign);
   
   Scene scene = new Scene(tabs, 300, 400); // Manage scene size
   primaryStage.setTitle("Sizing and Aligning");
   primaryStage.setScene(scene);
   primaryStage.show();

  }

/*

• Creates the UI for the sizing sample, which demonstrates ways to manage

• the size of controls when you don't want the default sizes. */ private Pane sizingSample() {

   BorderPane border = new BorderPane();
   border.setPadding(new Insets(20, 0, 20, 20));
          
   ListView<String> lvList = new ListView<String>(); 
   ObservableList<String> items = FXCollections.observableArrayList (
            "Hot dog", "Hamburger", "French fries", 
            "Carrot sticks", "Chicken salad");
   lvList.setItems(items);
   lvList.setMaxHeight(Control.USE_PREF_SIZE);
   lvList.setPrefWidth(150.0);
  
   border.setLeft(lvList);    
   border.setRight(createButtonColumn());  
   border.setBottom(createButtonRow());  // Uses a tile pane for sizing

// border.setBottom(createButtonBox()); // Uses an HBox, no sizing

    return border;
}
   

/*

• Creates the UI for the alignment sample, which demonstrates ways to manage

• the alignment of controls when you don't want the default alignment. */ private Pane alignmentSample() {

   GridPane grid = new GridPane();
   grid.setAlignment(Pos.CENTER);  // Override default
   grid.setHgap(10);
   grid.setVgap(12);
   
   // Use column constraints to set properties for columns in the grid
   ColumnConstraints column1 = new ColumnConstraints();
   column1.setHalignment(HPos.RIGHT);  // Override default
   grid.getColumnConstraints().add(column1); 
  
   ColumnConstraints column2 = new ColumnConstraints();
   column2.setHalignment(HPos.LEFT);  // Override default
   grid.getColumnConstraints().add(column2); 
  
   HBox hbButtons = new HBox();
   hbButtons.setSpacing(10.0);
   hbButtons.setAlignment(Pos.CENTER);  // Aligns HBox and controls in HBox
  
  
   Button btnSubmit = new Button("Submit");
   Button btnClear = new Button("Clear");
   Button btnExit2 = new Button("Exit");
   btnSubmit.setStyle("-fx-font-size: 15pt;");
   
   Label lblName = new Label("User name:");
   TextField tfName = new TextField();
   Label lblPwd = new Label("Password:");
   PasswordField pfPwd = new PasswordField();
   
   hbButtons.getChildren().addAll(btnSubmit, btnClear, btnExit2);
   grid.add(lblName, 0, 0);
   grid.add(tfName, 1, 0);
   grid.add(lblPwd, 0, 1);
   grid.add(pfPwd, 1, 1);
   grid.add(hbButtons, 0, 2, 2, 1);
  
   /* Uncomment the following statements to bottom-align the buttons */

// hbButtons.setAlignment(Pos.BOTTOM_CENTER); // GridPane innergrid = new GridPane(); // innergrid.setAlignment(Pos.CENTER); // innergrid.add(hbButtons, 0, 0); // grid.add(innergrid, 0, 2, 2, 1);

    return grid;
}

/*

• Creates a column of buttons and makes them all the same width as the

• largest button. */ private VBox createButtonColumn() {

   Button btnAdd = new Button("Add");
   Button btnDelete = new Button("Delete");
   Button btnMoveUp = new Button("Move Up");
   Button btnMoveDown = new Button("Move Down");
   
   // Comment out the following statements to see the default button sizes
   btnAdd.setMaxSize(Double.MAX_VALUE, Double.MAX_VALUE);
   btnDelete.setMaxSize(Double.MAX_VALUE, Double.MAX_VALUE);
   btnMoveUp.setMaxSize(Double.MAX_VALUE, Double.MAX_VALUE);
   btnMoveDown.setMaxSize(Double.MAX_VALUE, Double.MAX_VALUE);
   btnMoveDown.setMinWidth(Control.USE_PREF_SIZE);
  
   VBox vbButtons = new VBox();
   vbButtons.setSpacing(10);
   vbButtons.setPadding(new Insets(0, 20, 10, 20)); 
   
   vbButtons.getChildren().addAll(
           btnAdd, btnDelete, btnMoveUp, btnMoveDown);
   
   return vbButtons;

  }

/*

• Creates a row of buttons and makes them all the same size. */ private TilePane createButtonRow() {

   // Let buttons grow, otherwise they will be different sizes based
   // on the length of the label
   btnApply.setMaxSize(Double.MAX_VALUE, Double.MAX_VALUE);
   btnContinue.setMaxSize(Double.MAX_VALUE, Double.MAX_VALUE);
   btnExit.setMaxSize(Double.MAX_VALUE, Double.MAX_VALUE);
  
   TilePane tileButtons = new TilePane(Orientation.HORIZONTAL);
   tileButtons.setPadding(new Insets(20, 10, 20, 0));
   tileButtons.setHgap(10.0);
   tileButtons.setVgap(8.0); // In case window is reduced and buttons 
                             // require another row
   tileButtons.getChildren().addAll(btnApply, btnContinue, btnExit);
   
   return tileButtons;

  }

/*

• Creates a row of buttons with the default sizes. */ private HBox createButtonBox() {

   HBox hbButtons = new HBox();
   hbButtons.setSpacing(10);
   hbButtons.setPadding(new Insets(20, 10, 20, 0)); 
   hbButtons.getChildren().addAll(btnApply, btnContinue, btnExit);
   
   return hbButtons;

  }

}