为什么我做不到

似乎Pane没有为bind提供widthProperty方法

对象

至少将宽度与内部窗格的TextArea与外部窗格绑定
我将创建许多新选项卡，因此，我更喜欢将内部窗格与外部窗格绑定，而不是将TextArea直接绑定到外部窗格。

情况

蓝色和橙色矩形与窗格dropPane绑定良好
但是蓝色边框窗格的宽度应该与红色边框窗格的大小相同！

我的来源

main.kt：

import javafx.application.Application
import javafx.fxml.FXMLLoader
import javafx.scene.*
import javafx.scene.control.*
import javafx.scene.paint.Paint
import javafx.scene.shape.Rectangle
import javafx.stage.Stage

import javafx.scene.layout.*
import javafx.scene.paint.*


fun main(args : Array<String>) {
    println("EntryPoint")

    Application.launch(PaneBindingTest().javaClass, *args)

}

class PaneBindingTest : Application() {

    private var tabCount = 0

    private fun generateNewTab (): Tab {
        val tab = Tab()
        tabCount += 1
        tab.text = "Tab$tabCount"
        val fxml = javaClass.getResource("fxml/Tab.fxml")
        val aTabPane: Pane = FXMLLoader.load(fxml)
        aTabPane.border = Border(BorderStroke(Paint.valueOf("Red"),BorderStrokeStyle.DASHED, CornerRadii.EMPTY, BorderWidths.DEFAULT))
        tab.content = aTabPane
        return tab
    }

    override fun start(primaryStage: Stage) {
        primaryStage.title = "EntryPoint"
        primaryStage.isAlwaysOnTop = true
        val fxml = javaClass.getResource("fxml/EntryPoint.fxml")
        val root: Parent = FXMLLoader.load(fxml)
        val scene = Scene(root)

        val epPane= root.lookup("#EPPane") as AnchorPane // Entry Point Pane
        val dropPane= root.lookup("#DropPane") as AnchorPane // Drop Pane
        val tabPane= root.lookup("#TabPane") as TabPane // Tab Pane
        val singleDropPoint= root.lookup("#ForSingle") as Rectangle // Single-ArchiveSet drop point
        val multiDropPoint = root.lookup("#ForMulti") as Rectangle // Multi-ArchiveSet drop point

        //epPane.background = Background(BackgroundFill(Paint.valueOf("Yellow"), CornerRadii(0.0), Insets(0.0,0.0,0.0,0.0)))
        //dropPane.background = Background(BackgroundFill(Paint.valueOf("Green"), CornerRadii(0.0), Insets(0.0,0.0,0.0,0.0)))
        tabPane.tabClosingPolicy = TabPane.TabClosingPolicy.ALL_TABS // or SELECTED_TAB, UNAVAILABLE
        tabPane.border = Border(BorderStroke(Paint.valueOf("Blue"),BorderStrokeStyle.DASHED, CornerRadii.EMPTY, BorderWidths.DEFAULT))

        singleDropPoint.heightProperty().bind(epPane.heightProperty().divide(32).multiply(23))

        multiDropPoint.yProperty().bind(singleDropPoint.yProperty().add(dropPane.heightProperty().divide(4).multiply(3)))
        multiDropPoint.heightProperty().bind(epPane.heightProperty().divide(4))

        primaryStage.scene = scene
        primaryStage.show()

        val newTab = generateNewTab()
        tabPane.tabs.add(newTab)
        tabPane.selectionModel.select(newTab)

    }
}

fxml/EntryPoint.fxml

<?import javafx.scene.control.TabPane?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.shape.Rectangle?>

<AnchorPane fx:id="EPPane" prefHeight="640.0" prefWidth="1280.0" xmlns="http://javafx.com/javafx/10.0.1" xmlns:fx="http://javafx.com/fxml/1">
<children>
    <TabPane fx:id="TabPane" prefHeight="640.0" prefWidth="1152.0" tabClosingPolicy="ALL_TABS" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="128.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
    </TabPane>
    <AnchorPane fx:id="DropPane" layoutY="128.0" maxWidth="128.0" minWidth="128.0" prefWidth="128.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.topAnchor="0.0">
        <children>
            <Rectangle fx:id="ForSingle" arcHeight="16.0" arcWidth="16.0" fill="DODGERBLUE" height="360.0" width="120.0" stroke="#1100ff" strokeType="INSIDE" strokeWidth="8.0" AnchorPane.leftAnchor="4.0" AnchorPane.rightAnchor="4.0" AnchorPane.topAnchor="4.0"/>
            <Rectangle fx:id="ForMulti" arcHeight="16.0" arcWidth="16.0" fill="#ff9d1f" height="240.0" width="120.0" stroke="#ff8800" strokeType="INSIDE" strokeWidth="8.0" AnchorPane.leftAnchor="4.0" AnchorPane.rightAnchor="4.0" AnchorPane.bottomAnchor="4.0"/>
        </children>
    </AnchorPane>
</children>
</AnchorPane>

fxml/Tab.fxml：

<?import javafx.scene.control.CheckBox?>
<?import javafx.scene.control.ComboBox?>
<?import javafx.scene.control.RadioButton?>
<?import javafx.scene.control.TextArea?>
<?import javafx.scene.control.ToggleGroup?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.HBox?>

<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="480.0" prefWidth="1000.0" xmlns="http://javafx.com/javafx/10.0.1" xmlns:fx="http://javafx.com/fxml/1">
  <children>
      <TextArea fx:id="FilePaths" layoutX="4.0" layoutY="80.0" prefHeight="128.0" AnchorPane.leftAnchor="4.0" AnchorPane.rightAnchor="4.0" AnchorPane.topAnchor="72.0" />
      <RadioButton layoutX="14.0" layoutY="206.0" mnemonicParsing="false" selected="true" text="Hash/Size only">
        <toggleGroup>
            <ToggleGroup fx:id="AnalyzeMethod" />
        </toggleGroup>
      </RadioButton>
      <RadioButton layoutX="120.0" layoutY="206.0" mnemonicParsing="false" text="FileName" toggleGroup="$AnalyzeMethod" />
      <RadioButton layoutX="200.0" layoutY="206.0" mnemonicParsing="false" text="Directory Structure" toggleGroup="$AnalyzeMethod" />
      <CheckBox fx:id="CheckDiff" layoutX="336.0" layoutY="206.0" mnemonicParsing="false" text="Show Diff" />
      <CheckBox fx:id="CheckSame" layoutX="420.0" layoutY="206.0" mnemonicParsing="false" text="Show Same" />
      <ComboBox fx:id="ComboBox" layoutX="840.0" layoutY="202.0" prefWidth="150.0" />
      <HBox fx:id="LabelBox" layoutX="12.0" layoutY="14.0" prefHeight="64.0" prefWidth="978.0" AnchorPane.leftAnchor="4.0" AnchorPane.rightAnchor="4.0" AnchorPane.topAnchor="4.0" />
  </children>
</AnchorPane>

我发现几乎same question，但没有答案。

Answer 1

您不需要绑定即可实现此目的。问题在于您将maxHeight / maxWidth的约束设置为USE_PREF_SIZE，即，将其设置为在调整窗口大小时很容易达到的固定值。删除这些限制，以使AnchorPane根据需要增长：

Tab.fxml

<AnchorPane minHeight="-Infinity" minWidth="-Infinity" prefHeight="480.0" prefWidth="1000.0" xmlns="http://javafx.com/javafx/10.0.1" xmlns:fx="http://javafx.com/fxml/1">
    ...
</AnchorPane>

此外，如果可以避免的话，我建议避免使用AnchorPane。用这种布局很难实现响应式布局。在这种情况下，VBox和HBox会做得更好。

示例：

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

<?import javafx.scene.control.CheckBox?>
<?import javafx.scene.control.ComboBox?>
<?import javafx.scene.control.RadioButton?>
<?import javafx.scene.control.TextArea?>
<?import javafx.scene.control.ToggleGroup?>
<?import javafx.scene.layout.HBox?>
<?import javafx.scene.layout.VBox?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.layout.Region?>

<VBox prefHeight="480.0"
    prefWidth="1000.0" xmlns="http://javafx.com/javafx/10.0.1"
    xmlns:fx="http://javafx.com/fxml/1">
    <padding>
        <Insets topRightBottomLeft="4" />
    </padding>
    <children>
        <HBox fx:id="LabelBox" prefHeight="64.0" prefWidth="978.0" />
        <TextArea VBox.vgrow="ALWAYS" fx:id="FilePaths"
            prefHeight="128.0">
        </TextArea>
        <HBox spacing="10" minWidth="-Infinity">
            <VBox.margin>
                <Insets top="5" left="0" right="0" bottom="0" />
            </VBox.margin>
            <children>
                <RadioButton mnemonicParsing="false" selected="true"
                    text="Hash/Size only">
                    <toggleGroup>
                        <ToggleGroup fx:id="AnalyzeMethod" />
                    </toggleGroup>
                </RadioButton>
                <RadioButton mnemonicParsing="false" text="FileName"
                    toggleGroup="$AnalyzeMethod" />
                <RadioButton mnemonicParsing="false"
                    text="Directory Structure" toggleGroup="$AnalyzeMethod" />
                <CheckBox fx:id="CheckDiff" mnemonicParsing="false"
                    text="Show Diff" />
                <CheckBox fx:id="CheckSame" mnemonicParsing="false"
                    text="Show Same" />
                <Region HBox.hgrow="ALWAYS" /> <!-- placeholder to grow/shrink -->
                <ComboBox fx:id="ComboBox" prefWidth="150.0" />
            </children>
        </HBox>
    </children>
</VBox>

如何在JavaFX中将窗格与另一个窗格绑定

为什么我做不到

对象

情况

我的来源

1 个答案: