can I run a javafx from main thread thread?

Similar Questions

• How can I do to block the main thread when to display a dialog box

  I have a problem to block the user interface main thread when to display a dialog box (the dialog was created by the main Application), and when the dialog box is closed, the main Application can go to the next step.
  Here is my code:
  
  SerializableAttribute public class TitledPaneExample extends Application {}
  instance of TitledPaneExample private;
  StackPane mainModalDimmer;
  
  /*
  * (non-Javadoc)
  *
  * @see javafx.application.Application #start (javafx.stage.Stage)
  */
  @Override
  public void start (point primaryStage) bird Exception {}
  instance = this;
  primaryStage.setTitle (this.getClass () m:System.NET.SocketAddress.ToString ());
  
  final StackPane layerPane = new StackPane();
  layerPane.setDepthTest (DepthTest.DISABLE);
  layerPane.setStyle ("background - fx - color: BLACK ;"); ")
  
  Vb VBox = new VBox();
  vb.setStyle ("background - fx - color: BLUE ;"); ")
  vb.getChildren () .add new (Label ("1"));
  vb.getChildren () .add (Label ("2")) new;
  vb.getChildren () .add new (Label ("3"));
  vb.getChildren () .add (Label ("4")) new;
  
  Bt1 button = new Button ("bt1");
  BT1.setOnAction (new EventHandler < ActionEvent > () {}
  {} public void handle (ActionEvent event)
  System.out.println ("bt1 trying to the new dialog box > > >");
  Dialogue di = new dialog box (instance, "some trick here!");
  System.out.println ("bt1 dialogue again successfully, try to show");
  di. Show();
  System.out.println ("bt1 dialog hide? < < < < ");"
  }
  });
  vb.getChildren () .add (bt1).
  
  layerPane.getChildren () .add (vb);
  
  mainModalDimmer = new StackPane();
  mainModalDimmer.setId ("MainModalDimmer");
  mainModalDimmer.setMaxSize (Double.MAX_VALUE, Double.MAX_VALUE);
  mainModalDimmer.setVisible (false);
  mainModalDimmer.setStyle ("background - fx - color: RED ;"); ")
  layerPane.getChildren () .add (mainModalDimmer);
  
  Scene sc = new scene (layerPane, 800, 600);
  primaryStage.setResizable (true);
  primaryStage.setScene (sc);
  primaryStage.show ();
  
  }
  
  /**
  * Display the node given as a floating dialog on the entire application, with
  * the rest of the application grayed out and blocked from mouse events.
  *
  @param message
  */
  {} public void showModalMessage (message from node)
  mainModalDimmer.getChildren () .add (message);
  mainModalDimmer.setOpacity (0);
  mainModalDimmer.setVisible (true);
  mainModalDimmer.setCache (true);
  TimelineBuilder
  . Create()
  () .keyFrames
  new KeyFrame (Duration.seconds (1),)
  new EventHandler < ActionEvent > () {}
  {} public void handle (ActionEvent t)
  mainModalDimmer.setCache (false);
  }
  }, new KeyValue (mainModalDimmer
  . opacityProperty(), 1.
  Interpolator.EASE_BOTH))) infrastructure)
  . Play();
  }
  
  /**
  Hide the any modal message that appears
  */
  public void hideModalMessage() {}
  mainModalDimmer.setCache (true);
  TimelineBuilder
  . Create()
  () .keyFrames
  new KeyFrame (Duration.seconds (1),)
  new EventHandler < ActionEvent > () {}
  {} public void handle (ActionEvent t)
  mainModalDimmer.setCache (false);
  mainModalDimmer.setVisible (false);
  mainModalDimmer.getChildren () .clear ();
  }
  }, new KeyValue (mainModalDimmer
  . opacityProperty(), 0,.
  Interpolator.EASE_BOTH))) infrastructure)
  . Play();
  }
  
  /**
  @param args
  */
  Public Shared Sub main (String [] args) {}
  Launch();
  }
  
  Dialogue/public class extends TitledPane {}
  private owner of TitledPaneExample = null;
  instance of TitledPane private;
  
  Dialogue (owner of TitledPaneExample, String message) {}
  This.Owner = owner;
  this.parentThreand = Thread.currentThread ();
  This.instance = this;
  this.setExpanded (true);
  this.setText ("Dialog");
  this.setMaxWidth (400);
  this.setPrefWidth (300);
  this.setMinWidth (200);
  
  Label the tx = new Label ("message");
  tx.setTooltip (new Tooltip (message));
  tx.setWrapText (true);
  tx.setContentDisplay (ContentDisplay.LEFT);
  
  Bt button = new Button ("OK");
  bt.setOnAction (new EventHandler < ActionEvent > () {}
  {} public void handle (ActionEvent event)
  masquer();
  }
  });
  
  Sp ScrollPane = new ScrollPane();
  sp.setHbarPolicy (ScrollBarPolicy.AS_NEEDED);
  sp.setVbarPolicy (ScrollBarPolicy.AS_NEEDED);
  sp.setContent (tx);
  
  Hb HBox = new HBox (30);
  hb.setPrefHeight (40);
  hb.setAlignment (Pos.CENTER_RIGHT);
  hb.getChildren () .add (bt);
  
  BP BorderPane = new BorderPane();
  bp.setCenter (sp);
  bp.setBottom (hb);
  
  this.setContent (bp);
  }
  
  {} public void show()
  System.out.println ("dialogue show() 1 > > >");
  
  owner.showModalMessage (instance);
  
  System.out.println ("dialogue show() 2 > > >");
  
  }
  
  public void masquer() {}
  System.out.println ("dialogue masquer() 1 > > >");
  this.owner.hideModalMessage ();
  
  System.out.println ("dialogue masquer() 2 > > >");
  }
  }
  
  }

  I'm also interested in how to do this without the use of a step.

  But, if you are ready to use a step for this, you can create a useful first step (without borders) with its owner being your current stage. Then, you can call the function showAndWait on stage that allows to block the thread of your application. For example, I implemented a DialogStage like this:

  package hs.mediasystem.util;
  
  import javafx.animation.KeyFrame;
  import javafx.animation.KeyValue;
  import javafx.animation.Timeline;
  import javafx.event.EventHandler;
  import javafx.scene.effect.ColorAdjust;
  import javafx.stage.Modality;
  import javafx.stage.Stage;
  import javafx.stage.StageStyle;
  import javafx.stage.Window;
  import javafx.stage.WindowEvent;
  import javafx.util.Duration;
  
  public class DialogStage extends Stage implements Dialog {
  
    public DialogStage() {
      super(StageStyle.TRANSPARENT);
  
      this.setTitle("MediaSystem-dialog");
  
      initModality(Modality.APPLICATION_MODAL);
    }
  
    protected void setParentEffect(Stage parent) {
      ColorAdjust colorAdjust = new ColorAdjust();
  
      Timeline fadeOut = new Timeline(
        new KeyFrame(Duration.ZERO,
          new KeyValue(colorAdjust.brightnessProperty(), 0)
        ),
        new KeyFrame(Duration.seconds(1),
          new KeyValue(colorAdjust.brightnessProperty(), -0.5)
        )
      );
  
      parent.getScene().getRoot().setEffect(colorAdjust);
  
      fadeOut.play();
    }
  
    protected void removeParentEffect(Stage parent) {
      parent.getScene().getRoot().setEffect(null);
    }
  
    protected void recenter() {
      Window parent = getOwner();
  
      sizeToScene();
  
      setX(parent.getX() + parent.getWidth() / 2 - DialogStage.this.getWidth() / 2);
      setY(parent.getY() + parent.getHeight() / 2 - DialogStage.this.getHeight() / 2);
    }
  
    @Override
    public final void showDialog(final Stage parent, boolean synchronous) {
      initOwner(parent);
  
      setParentEffect(parent);
  
      setOnShown(new EventHandler() {
        @Override
        public void handle(WindowEvent event) {
          recenter();
          onShow();
        }
      });
  
      if(synchronous) {
        showAndWait();
      }
      else {
        show();
      }
    }
  
    protected void onShow() {
    }
  
    @Override
    public void close() {
      removeParentEffect((Stage)getOwner());
      super.close();
    }
  }
  

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• panels and multithreading - what features can I call from another thread.

  I am writing a program (Windows XP, LabWindows/CVI 2010) that has several threads. The main thread generates and manages most of the panels, but not all. Is there a list of what control panel functions are thread-safe and which are not? Reading the help file and the different positions, the functions of set value are safe; game-attribute functions are NOT. (I found that calling (SetPanelAttribute) with ATTR_TITLE will be locked permanently a program!). What about calliing a command callback function? (Via the CallCntrlCallback() function). It seems to work very well so far, but I can't find anything definitive.

  I do a lot of multi-thread applications, so I have a few ideas for you.  Unfortunately, I have not tried to do many of the changes of attributes specific threads lower panel.

  I'm very careful about how I handle the wire "solidity", dealing with the variables in an asynchronous way, as much as possible, to avoid the use of blocking and incorrect values of the variables.

  But there are certainly many things simply cannot make you the son of the daughter.  Things like question popups and launch other threads cannot be done simply.  As long as you understand that the best place to do something is in the main thread, and then a girl thread can use PostDeferredCall (...), do something in the main thread

  In the thread of your daughter, you can insert this call:

  PostDeferredCall (launchNewThread, 0);

  And then this call performs this function in the main thread:
  void CVICALLBACK launchNewThread(void *callbackData)

  {
  CmtScheduleThreadPoolFunction (threadPoolHandle, NewThread, NULL, NULL);
  }

  Or you can insert calls from parameter of the attribute panel inside the function above, I suppose, to safely run in the main thread.

  Hoe, that helps...

  -Gary

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• Why almost all javafx methods must be called from the thread of the application?

  I have a pretty big 3D scene that is refreshed every few seconds.

  It takes a while to update the scene, and I wanted to do it in a background thread.

  Problem is that almost every approach I take requires the application-fx thread.

  Now, I understand that change the UI itself must be called in the application thread, so I tried a different approach:

  Create a new group, add all the nodes (which takes the greatest amount of time) and update the component root of the view with the new group.

  I assumed that only the last party required the application thread, but alas this was not the case.

  group.getChildren () .add also requires that the thread of the application. Why?

  node.setLayoutX () also requires that the thread of the application. Why?

  It is a new set of nodes that are not visible and groups yet, so why can't do this in a background thread?

  The reasons of principle (I think) that JavaFX is mainly a single toolbox threaded are described in:

  https://weblogs.Java.net/blog/2004/10/19/multithreaded-toolkits-failed-dream

  That said, if you manipulate objects that are not part of an active scene, then it should work.  The dream that failed has what to do with the components who participate actively in the molten, interactive GUI.  If you're interacting with only the components out of the screen, then it (should be) without issue.

  Please, create and post an example minimum, executable that replicates the question.

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  What you have described so far, I feel that, even if there is no problems with threads, your proposed approach would not fix your performance problem.

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