JavaFX GridPane 更改特定行的可见性 [重复]

Question

我正在开发一个以 9x9 GridPane 作为我的棋盘的 JavaFX Sudoku 游戏，我想让网格线仅在框周围可见，因此每 3 行和每列每 3 行但我无法找到任何可行的解决方案还没有。

grid.setGridLinesVisible(true) 只能选择让每一行都可见

我还尝试在 fxml 代码中为特定的列和行约束添加语句 gridLinesVisible="true"，但它不允许我放入。

还有其他想法吗？谢谢 :D

Answer 1

我建议不要为整个布局使用一个 GridPane，而是使用 10 个单独的 GridPane 容器：9 个用于各个部分，1 个用于容纳所有部分。

这是一个简单的 FXML 布局来演示（包括边框）：

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.geometry.Insets?>
<?import javafx.scene.layout.*?>
<VBox xmlns="http://javafx.com/javafx/9.0.1" xmlns:fx="http://javafx.com/fxml/1">
    <children>
        <GridPane gridLinesVisible="true" style="-fx-border-color: black; -fx-border-width: 3;">
            <columnConstraints>
                <ColumnConstraints hgrow="SOMETIMES" maxWidth="150.0" minWidth="10.0" prefWidth="150.0"/>
                <ColumnConstraints hgrow="SOMETIMES" maxWidth="150.0" minWidth="10.0" prefWidth="150.0"/>
                <ColumnConstraints hgrow="SOMETIMES" maxWidth="150.0" minWidth="10.0" prefWidth="150.0"/>
            </columnConstraints>
            <rowConstraints>
                <RowConstraints maxHeight="150.0" minHeight="150.0" prefHeight="150.0" vgrow="SOMETIMES"/>
                <RowConstraints maxHeight="150.0" minHeight="150.0" prefHeight="150.0" vgrow="SOMETIMES"/>
                <RowConstraints maxHeight="150.0" minHeight="150.0" prefHeight="150.0" vgrow="SOMETIMES"/>
            </rowConstraints>
            <children>
                <GridPane gridLinesVisible="true">
                    <columnConstraints>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                    </columnConstraints>
                    <rowConstraints>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                    </rowConstraints>
                </GridPane>
                <GridPane gridLinesVisible="true" GridPane.columnIndex="1">
                    <columnConstraints>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                    </columnConstraints>
                    <rowConstraints>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                    </rowConstraints>
                </GridPane>
                <GridPane gridLinesVisible="true" GridPane.columnIndex="2">
                    <columnConstraints>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                    </columnConstraints>
                    <rowConstraints>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                    </rowConstraints>
                </GridPane>
                <GridPane gridLinesVisible="true" GridPane.rowIndex="1">
                    <columnConstraints>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                    </columnConstraints>
                    <rowConstraints>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                    </rowConstraints>
                </GridPane>
                <GridPane gridLinesVisible="true" GridPane.columnIndex="1" GridPane.rowIndex="1">
                    <columnConstraints>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                    </columnConstraints>
                    <rowConstraints>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                    </rowConstraints>
                </GridPane>
                <GridPane gridLinesVisible="true" GridPane.columnIndex="2" GridPane.rowIndex="1">
                    <columnConstraints>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                    </columnConstraints>
                    <rowConstraints>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                    </rowConstraints>
                </GridPane>
                <GridPane gridLinesVisible="true" GridPane.rowIndex="2">
                    <columnConstraints>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                    </columnConstraints>
                    <rowConstraints>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                    </rowConstraints>
                </GridPane>
                <GridPane gridLinesVisible="true" GridPane.columnIndex="1" GridPane.rowIndex="2">
                    <columnConstraints>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                    </columnConstraints>
                    <rowConstraints>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                    </rowConstraints>
                </GridPane>
                <GridPane gridLinesVisible="true" GridPane.columnIndex="2" GridPane.rowIndex="2">
                    <columnConstraints>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                        <ColumnConstraints hgrow="SOMETIMES" maxWidth="50.0" minWidth="50.0" prefWidth="50.0"/>
                    </columnConstraints>
                    <rowConstraints>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                        <RowConstraints maxHeight="50.0" minHeight="50.0" prefHeight="50.0" vgrow="SOMETIMES"/>
                    </rowConstraints>
                </GridPane>
            </children>
        </GridPane>
    </children>
    <padding>
        <Insets bottom="5.0" left="5.0" right="5.0" top="5.0"/>
    </padding>
</VBox>

所以这里我有一个 3x3 GridPane，其中每个单元格为 150x150 像素。在这 9 个单元格中的每一个单元格中，我添加了另一个 3x3 GridPane，其单元格均为 50x50。

这将创建一个统一的数独网格，可供使用：