问题
I have a simple application on JavaFX, it's actually consist of several panes and buttons. I can't figure out how to make a button move when the stage resize. So, I want the left bottom button will always be visible even when resize the window.
here is nodes overview:
here is fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import com.jfoenix.controls.JFXButton?>
<?import de.jensd.fx.glyphs.fontawesome.FontAwesomeIconView?>
<?import javafx.geometry.Insets?>
<?import javafx.geometry.Point3D?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.BorderPane?>
<?import javafx.scene.layout.VBox?>
<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="750.0" prefWidth="1000.0" xmlns="http://javafx.com/javafx/9.0.4" xmlns:fx="http://javafx.com/fxml/1">
<children>
<BorderPane layoutX="89.0" layoutY="64.0" prefHeight="400.0" prefWidth="600.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<left>
<AnchorPane prefHeight="150.0" prefWidth="150.0" style="-fx-background-color: #4059a9 #4059a9;" BorderPane.alignment="CENTER">
<children>
<AnchorPane prefHeight="750.0" prefWidth="75.0" style="-fx-background-color: #2b4496 #2b4496;" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="75.0" AnchorPane.topAnchor="0.0">
<children>
<VBox alignment="CENTER" prefHeight="750.0" prefWidth="75.0" spacing="35.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<children>
<JFXButton contentDisplay="GRAPHIC_ONLY" prefWidth="82.0" VBox.vgrow="ALWAYS">
<graphic>
<FontAwesomeIconView fill="WHITE" glyphName="HOME" size="2em" />
</graphic>
<VBox.margin>
<Insets top="25.0" />
</VBox.margin>
</JFXButton>
<JFXButton contentDisplay="GRAPHIC_ONLY" prefWidth="75.0">
<VBox.margin>
<Insets bottom="10.0" top="600.0" />
</VBox.margin>
<graphic>
<FontAwesomeIconView fill="WHITE" glyphName="SIGN_OUT" size="2em" />
</graphic>
<opaqueInsets>
<Insets />
</opaqueInsets>
</JFXButton>
</children>
</VBox>
</children>
<rotationAxis>
<Point3D />
</rotationAxis>
</AnchorPane>
</children>
</AnchorPane>
</left>
</BorderPane>
</children>
</AnchorPane>回答1:
Looks like you could achieve the same effect by using a BorderPane and a VBox with overlayed background fills and a Region that always grows inserted between your buttons:
<?xml version="1.0" encoding="UTF-8"?>
<?import com.jfoenix.controls.JFXButton?>
<?import de.jensd.fx.glyphs.fontawesome.FontAwesomeIconView?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.BorderPane?>
<?import javafx.scene.layout.VBox?>
<?import javafx.scene.layout.Region?>
<BorderPane prefHeight="750.0" prefWidth="1000.0"
xmlns="http://javafx.com/javafx/9.0.4"
xmlns:fx="http://javafx.com/fxml/1">
<left>
<VBox alignment="TOP_LEFT"
spacing="35.0"
style="-fx-background-color: #2b4496, #4059a9; -fx-background-insets: 0, 0 0 0 75;"> <!-- overlay 2 backgrounds produce rectangles -->
<padding>
<Insets right="75.0" />
</padding>
<children>
<JFXButton contentDisplay="GRAPHIC_ONLY" prefWidth="82.0" VBox.vgrow="NEVER">
<graphic>
<FontAwesomeIconView fill="WHITE" glyphName="HOME" size="2em" />
</graphic>
<VBox.margin>
<Insets top="25.0" />
</VBox.margin>
</JFXButton>
<Region VBox.vgrow="ALWAYS" /> <!-- filler -->
<JFXButton contentDisplay="GRAPHIC_ONLY" prefWidth="75.0" VBox.vgrow="NEVER">
<VBox.margin>
<Insets bottom="10.0" />
</VBox.margin>
<graphic>
<FontAwesomeIconView fill="WHITE" glyphName="SIGN_OUT" size="2em" />
</graphic>
</JFXButton>
</children>
</VBox>
</left>
</BorderPane>
回答2:
Your problem is the margins you set on your Buttons. Follow this layout. I used HBox as the root node.
<?xml version="1.0" encoding="UTF-8"?>
<?import com.jfoenix.controls.JFXButton?>
<?import de.jensd.fx.glyphs.fontawesome.FontAwesomeIconView?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.HBox?>
<?import javafx.scene.layout.VBox?>
<HBox maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="700.0" prefWidth="1000.0" xmlns="http://javafx.com/javafx/8.0.141" xmlns:fx="http://javafx.com/fxml/1">
<children>
<VBox alignment="CENTER" prefWidth="75.0" style="-fx-background-color: #2b4496 #2b4496;">
<children>
<JFXButton contentDisplay="GRAPHIC_ONLY" prefWidth="82.0" VBox.vgrow="ALWAYS">
<graphic>
<FontAwesomeIconView fill="WHITE" glyphName="HOME" size="2em" />
</graphic>
<VBox.margin>
<Insets top="25.0" />
</VBox.margin>
</JFXButton>
<Button maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" mnemonicParsing="false" opacity="0.0" VBox.vgrow="ALWAYS" />
<JFXButton contentDisplay="GRAPHIC_ONLY" prefWidth="75.0">
<VBox.margin>
<Insets bottom="25.0" />
</VBox.margin>
<graphic>
<FontAwesomeIconView fill="WHITE" glyphName="SIGN_OUT" size="2em" />
</graphic>
<opaqueInsets>
<Insets />
</opaqueInsets>
</JFXButton>
</children>
</VBox>
<VBox prefHeight="200.0" prefWidth="75.0" style="-fx-background-color: #4059a9 #4059a9;" />
<AnchorPane prefHeight="200.0" prefWidth="200.0" HBox.hgrow="ALWAYS" />
</children>
</HBox>
回答3:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.BorderPane?>
<?import javafx.scene.layout.VBox?>
<BorderPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" xmlns="http://javafx.com/javafx/8.0.111" xmlns:fx="http://javafx.com/fxml/1">
<left>
<VBox BorderPane.alignment="CENTER">
<children>
<Button mnemonicParsing="false" text="Button" />
<AnchorPane VBox.vgrow="ALWAYS" />
<Button mnemonicParsing="false" text="Button" />
</children>
</VBox>
</left>
</BorderPane>
Add an empty pane into the middle with VGROW set to ALWAYS.
来源：https://stackoverflow.com/questions/54464044/javafx-move-element-on-window-stage-resize