javafx-8

问题 I built a small application in JavaFX yesterday. I wanted to get the Scene of the application in the Controller class. I got an error every time I tried to get the scene in the controller class. I could set the OnKeyPressed-method on a Button in the Controller class, works fine. But it works only fine if the Button is selected.. I can get the scene in the Main-class method replaceSceneContent only. I have read this question already, but I call the getScene()-method in the initialize-method??

问题 I have a question about multi-threading and the binding of a StringProperty. I have a class CacheManager , which contains a Thread which updates my cache with the changes on the server. Now, I want to notify the user with a text and percentage of the progress (which are a Label and ProgressBar in JavaFX). I use public static DoubleProperty and StringProperty for this, which are defined in the CacheManager class. I just bind it like this: progressBar.progressProperty().bind(CacheManager

问题 The ability to wrap a swing component in a javaFX application seems to have vanished from javaFX 2: javafx.ext.swing.SwingComponent is not there any more in javaFX 2 beta API. Is there still a way to do this in the new API? 回答1: SwingNode class is used to embed a Swing content into a JavaFX application. Here is the link. 回答2: There is 3rd-party support library, see http://rkennke.wordpress.com/2011/11/16/swing-in-javafx-demo/ 回答3: According to this issue on the FX 2.0 JIRA they aren't

问题 I need to know in which way I can color the following image (PNG) by using JavaFX. This image is currently included in a ImageView of JavaFX: I want to color region 1 blue, the second one red, and the last two purple. How can I do this in JavaFX? Isn't there some kind of function as in Windows Paint? (You know, the painting bucket that fills a certain area with a color between borders). 回答1: Suggested Approach You can use a flood fill algorithm. Sample Code import javafx.application

问题 I've got a MenuBar that is setup as follows in FXML: <MenuBar VBox.vgrow="NEVER"> <menus> <Menu mnemonicParsing="true" text="_File"> <items> <MenuItem mnemonicParsing="true" text="_New Project"/> <MenuItem mnemonicParsing="true" text="_Open…"/> <MenuItem mnemonicParsing="false" text="Quit"/> </items> </Menu> </menus> </MenuBar> This produces a menu as follows: I've successfully styled the MenuBar and the Menu File with the following CSS: .menu-bar { /* The menu bar itself */ } .menu { /* The

问题 I would like to hide the input caret of a TextField in JavaFX8. I already tried to set the text fill to white (my TextField has a white background), but then my user input also disappears. The problem is that the textfield still needs focus, so I also thought of some EventHandler which listens to user input, and focusses on the textfield when a key is pressed, but then I would miss the first key typed. Anyone that knows how to do this? Or is it not possible in JavaFX8? 回答1: Update for Java

问题 This small JavaFX test application import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.layout.BorderPane; import javafx.scene.paint.Color; import javafx.scene.shape.Rectangle; import javafx.stage.Stage; public class ApplicationWithNonResizableStage extends Application { public static void main(final String[] args) { launch(args); } @Override public void start(final Stage primaryStage) throws Exception { final Rectangle rectangle = new Rectangle(200, 100,

问题 In JavaFX, if I have a scene with 2 VBox elements and each VBox has multiple Label in it. If I set the top VBox to invisible , why does the bottom VBox not move up the scene where the top VBox was ? The VBox is invisible but I would expect the other objects to move into its place. I am using FXML to load my controls. 回答1: Node.setVisible(boolean) just toggles the visibility state of a Node . To exclude a Node from its parents layout calculations you additionally have to set its managed state,

问题 I am trying out JFX Drag and Drop feature in my application (later connecting the objects in a sequence). I could not find any easy way to drag and drop my ImageView/Button at suitable position in my pane, hence I am planning to apply use of GridPane. The GridPane would be a large canvas with more than (50x50) cells. If I specify in my code that I need to drag and drop by ImageView at, let's say, (2,2) cell, I am able to do it. But, I need to give that access to my user. User could move the

问题 I need to start a javafx Application from another "container" class and call functions on the Application, but there doesn't seem to be any way of getting hold of a reference to the Application started using the Application.launch() method. Is this possible? Thanks 回答1: I had the same problem as this and got round it using this hack: import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.control.Label; import javafx.scene.layout.BorderPane; import javafx.stage