javafx - Slider above the x axis in a chart? -


i trying implement slider has xychart below , supposed slider along values of x-axis. new values y-axis dynamilcally added, chart may grow vertically. that's why decided, has inside scrollpane. question is:
how can reliably position slider above , same length of x-axis?
have tried bind properties concerning width , position of slider , numberaxis in fxml , java. see minimal (not) working (as desired) example below:

mainview.fxml

<?xml version="1.0" encoding="utf-8"?>  <?import java.lang.*?> <?import javafx.scene.chart.*?> <?import javafx.scene.layout.vbox?> <?import javafx.scene.layout.hbox?> <?import javafx.scene.layout.*?> <?import javafx.scene.control.*?> <?import javafx.scene.control.slider?>  <vbox fx:id="timebox" prefheight="600" prefwidth="800" maxheight="600" maxwidth="800"     xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1">     <children>         <slider fx:id="timeslider" blockincrement="30.0" max="360.0" />         <hbox fx:id="scrollbox" fitwidth="${timebox.width}" vbox.vgrow="always">             <children>                 <scrollpane fx:id="timescrollpane" fittoheight="true"                 fittowidth="true" fitwidth="${scrollbox.width}" hbox.hgrow="sometimes">                     <content>                         <linechart fx:id="timechart">                             <xaxis>                                 <numberaxis fx:id="timeaxis" minortickcount="1"                                 minorticklength="1.0" side="top" ticklabelgap="30.0"                                 ticklength="1.0" tickunit="1.0" upperbound="360.0" />                             </xaxis>                             <yaxis>                                 <categoryaxis fx:id="appearanceaxis" prefwidth="160.0"                                 side="left" />                             </yaxis>                         </linechart>                     </content>                 </scrollpane>             </children>         </hbox>     </children> </vbox>

mainviewcontroller

public class mainviewcontroller implements initializable {      @fxml private vbox timebox;     @fxml private hbox sliderbox;     @fxml private slider timeslider;     @fxml private hbox scrollbox;     @fxml private scrollpane timescrollpane;     @fxml private numberaxis timeaxis;     @fxml private categoryaxis appearanceaxis;     @fxml private linechart<number, string> timechart;      @override     public void initialize(url location, resourcebundle resources) {          // idea: set same x value, not change         timeslider.setlayoutx(timeaxis.getlayoutx());         // idea: bind width, stays longer         timeslider.prefwidthproperty().bind(timeaxis.widthproperty());     } }

main.java

import javafx.application.application; import javafx.fxml.fxmlloader; import javafx.stage.stage; import javafx.scene.parent; import javafx.scene.scene;   public class main extends application {     @override     public void start(stage primarystage) {         try {             fxmlloader loader = new fxmlloader();             loader.setlocation(getclass().getresource("mainview.fxml"));             parent root = loader.load();             scene scene = new scene(root,800,600);             scene.getstylesheets().add(getclass().getresource("application.css").toexternalform());             primarystage.setscene(scene);             primarystage.show();         } catch(exception e) {             e.printstacktrace();         }     }      public static void main(string[] args) {         launch(args);     } }

i know, have tried far not much, don't have idea how fix that. chart meant show start-to-stop time of video file on x-axis , annotations appearance intervals on y-axis. reading this…


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