Question

我正在尝试使用包含2行2列的gridpane设计布局。左上角区域和右上角区域共享宽度，它们都占50％。但在第二行我需要右下方区域才能获得60％的宽度，所以左下区域为40％。

我还试过像[[2col。，2col] [1col，3col]]矩阵那样的柱子。它既没有工作也没有。

这是我的代码;

public class Main extends Application {

@Override
public void start(Stage primaryStage) throws Exception {
    Group root = new Group();
    primaryStage.setTitle("Hello World");
    Scene scene = new Scene(root, 1700, 1200);


    //zoneTopLeft, spans 2 column
    VBox zoneTopLeft = createBaseContainer();
    //zoneTopRight, spans 2 columns
    VBox zoneTopRight = createBaseContainer();
    //zoneBottomLeft, spans 1 columns
    VBox zoneBottomLeft = createBaseContainer();
    //zoneBottomRight,spans 3 columns
    VBox zoneBottomRight = createBaseContainer();



    ColumnConstraints topRight=new ColumnConstraints();
    topRight.setPrefWidth(300);
    ColumnConstraints topLeft=new ColumnConstraints();
    topRight.setPrefWidth(300);
    ColumnConstraints bottomRight=new ColumnConstraints();
    topRight.setPrefWidth(400);
    ColumnConstraints bottomLeft=new ColumnConstraints();
    topRight.setPrefWidth(200);

    GridPane page=new GridPane();
    page.getColumnConstraints().addAll(topLeft,topRight,bottomLeft,bottomRight);
    page.setHgap(10);
    page.setVgap(10);
    page.add(zoneTopLeft, 0, 0);
    //        page.setColumnSpan(zoneTopLeft, 2);
    page.add(zoneTopRight, 1, 0); //2,0 for spaning
    //        page.setColumnSpan(zoneTopRight,2);
    page.add(zoneBottomLeft, 0, 1);
    //        page.setColumnSpan(zoneBottomLeft,1);
    page.add(zoneBottomRight, 1, 1);
    //        page.setColumnSpan(zoneBottomRight,3);

    root.getChildren().addAll(page);


    primaryStage.setScene(scene);
    primaryStage.show();


}

private VBox createBaseContainer() {
    VBox base = new VBox(); // box
    base.setPrefWidth(250);
    base.setPrefHeight(200);
    base.setStyle("-fx-border-width: 1;-fx-border-color: red");
    //  base.prefWidthProperty().bind(scene.widthProperty());

    BorderPane top = new BorderPane(); // top area of base
    top.prefWidthProperty().bind(base.prefWidthProperty());
    top.setPrefHeight(33);
    top.setLeft(setBaseTitle());
    top.setRight(setBaseButtons());
    top.setStyle("-fx-border-width: 1;-fx-border-color: blue");

    StackPane bottom = new StackPane(); // bottom are of base, content keeper

    base.getChildren().addAll(top, bottom);
    return base;
}


private Node setBaseButtons() {
    return new HBox();
}

private Node setBaseTitle() {

    return new Label();
}


public static void main(String[] args) {
    launch(args);
}

Answer 1

要使用GridPane执行此操作，请将其视为具有宽度为40％，10％和50％的三列。左上角的节点跨越第一列和第二列，右上角只是第三列。左下角仅在第一列中，右下角跨越第二列和第三列。

类似的东西：

|   c1   |c2|     c3    |
_________________________
|-----------|-----------|
|--------|--------------|

在代码中，执行以下操作：

Node topLeft ;
Node topRight ;
Node bottomLeft ;
Node bottomRight ;

GridPane page = new GridPane();
// page.add(Node, colIndex, rowIndex, colSpan, rowSpan):
page.add(topLeft, 0, 0, 2, 1);
page.add(topRight, 2, 0, 1, 1);
page.add(bottomLeft, 0, 2, 1, 1);
page.add(bottomRight, 1, 1, 2, 1);


ColumnConstraints col1Constraints = new ColumnConstraints();
col1Constraints.setPercentWidth(40);
ColumnConstraints col2Constraints = new ColumnConstraints();
col2Constraints.setPercentWidth(10);
ColumnConstraints col3Constraints = new ColumnConstraints();
col3Constraints.setPercentWidth(50);
page.getColumnConstraints().addAll(col1Constraints, col2Constraints, col3Constraints);

编辑：文本从getColumnContraints更改为getColumnConstraints。

Answer 2

@James_D有一个非常好的解决方案。在我的代码中，我为所有vBox分配了相同的大小。所以还有另一个解决这个问题的方法 - 实际上我们可以称它为修复基本错误。这是工作代码：

   public class Main extends Application {

@Override
public void start(Stage primaryStage) throws Exception {
    Group root = new Group();
    primaryStage.setTitle("Hello World");
    Scene scene = new Scene(root, 650, 550);



    VBox zoneTopLeft = createBaseContainer(300,300);
    VBox zoneTopRight = createBaseContainer(300,300);
    VBox zoneBottomLeft = createBaseContainer(200,200);
    VBox zoneBottomRight = createBaseContainer(400,200);


    GridPane page=new GridPane();
    page.setHgap(10);
    page.setVgap(10);
    page.add(zoneTopLeft, 0, 0);
    page.setColumnSpan(zoneTopLeft, 2);
    page.add(zoneTopRight, 2, 0);
    page.setColumnSpan(zoneTopRight,2);
    page.add(zoneBottomLeft, 0, 1);
    page.add(zoneBottomRight, 1, 1);
    page.setColumnSpan(zoneBottomRight,3);

    root.getChildren().addAll(page);


    primaryStage.setScene(scene);
    primaryStage.show();


}

private VBox createBaseContainer(double width,double height) {
    VBox base = new VBox(); // box
    base.setPrefWidth(width);
   base.setPrefHeight(height);
    base.setStyle("-fx-border-width: 1;-fx-border-color: red");
    //  base.prefWidthProperty().bind(scene.widthProperty());

    BorderPane top = new BorderPane(); // top area of base
    top.prefWidthProperty().bind(base.prefWidthProperty());
    top.setPrefHeight(33);
    top.setLeft(setBaseTitle());
    top.setRight(setBaseButtons());
    top.setStyle("-fx-border-width: 1;-fx-border-color: blue");

    StackPane bottom = new StackPane(); // bottom are of base, content keeper

    base.getChildren().addAll(top, bottom);
    return base;
}


private Node setBaseButtons() {
    return new HBox();
}

private Node setBaseTitle() {

    return new Label();
}


public static void main(String[] args) {
    launch(args);
}

如何在javafx中手动跨越网格窗格的列？

2 个答案: