I am using JavaFX and I have a strange problem. The follwing code is in the constructor of a class, which inherits Stage. The code is work in progress.
// this works fine, the chart is displayed
Scene scene = new Scene(lineChart, 1000, 600);
// table is not shown until I click on the window
Scene scene = new Scene(bidTable, 1000, 600);
this.setTitle("Auction chart");
this.setScene(scene);
What do I wrong? No errors and table with content is shown after I click on the window. Before it's just a white window.
EDIT:
I removed the chart just the table:
public class AuctionChart extends Stage {
private final TableView<Bid> bidTable = new TableView<Bid>();
private final TableColumn<Bid, String> bidColumn = new TableColumn<Bid, String>("Bid");
private final TableColumn<Bid, String> utilityColumn = new TableColumn<Bid, String>("Utility");
private final TableColumn<Bid, String> profitColumn = new TableColumn<Bid, String>("Profit");
private final NumberFormat fm = NumberFormat.getCurrencyInstance();
public AuctionChart() {
initialize();
bidTable.getColumns().addAll(bidColumn, utilityColumn, profitColumn);
Scene scene = new Scene(bidTable, 1000, 600);
this.setTitle("Auction chart");
this.setScene(scene);
}
public void setTowns(List<Town> towns) {
bidTable.setItems(FXCollections.observableArrayList(towns.get(0).getGebote()));
}
private void initialize() {
bidColumn.setCellValueFactory(cellData -> new SimpleStringProperty(fm.format(cellData.getValue().getBid())));
utilityColumn
.setCellValueFactory(cellData -> new SimpleStringProperty(fm.format(cellData.getValue().getUtility())));
profitColumn
.setCellValueFactory(cellData -> new SimpleStringProperty(fm.format(cellData.getValue().getProfit())));
}
}
Startup:
AuctionChart stage = new AuctionChart();
stage.setTowns(towns);
stage.show();
Thank you, it isn't a JavaFx Problem. It's an issue with concurrent threads in the application's backend.
Related
Sorry, I have just begun learning javaFX and cannot figure out how to get all of my icons on buttons the same size. I tried a couple things but could not get it working, all help is appreciated. Thank you!
Wont let me post my question unless I add more details but I cant think of anything else to put so just ignore this whole paragraph as I ramble on so I can post my question and continue coding my game.
public class Main extends Application {
Stage window;
Button button;
Scene scene1, scene2;
public static final int ROCK = 0;
public static final int PAPER = 1;
public static final int SCISSORS = 2;
public static int userChoice;
public static void main(String [] args) {
launch(args);
}
#Override
public void start(Stage primaryStage) throws Exception
{
window = primaryStage;
//Layout 1
VBox layout = new VBox(20);
Label label = new Label("Rock Paper Scissors");
Button myButton = new Button("Start");
myButton.setOnAction(e -> window.setScene(scene2));
Button exit = new Button("Exit");
exit.setOnAction(e -> System.exit(0));
layout.getChildren().addAll(label, myButton, exit);
layout.setAlignment(Pos.CENTER);
scene1 = new Scene(layout, 300, 300);
//Layout 2
BorderPane border = new BorderPane();
VBox layout1 = new VBox(10);
Label label1 = new Label("Choose One");
layout1.setAlignment(Pos.CENTER);
//Layout 3
HBox layout2 = new HBox(10);
//Rock Image Button
Image rockIm = new Image(getClass().getResourceAsStream("Rock2.png"));
Button rock = new Button();
rock.setGraphic(new ImageView(rockIm));
rock.setOnAction(e -> userChoice = ROCK);
//Paper Image Button
Image paperIm = new
Image(getClass().getResourceAsStream("Paper2.png"));
Button paper = new Button();
paper.setGraphic(new ImageView(paperIm));
paper.setOnAction(e -> userChoice = PAPER);
//Scissor Image Button
Image scissorIm = new
Image(getClass().getResourceAsStream("Scissor2.png"));
Button scissors = new Button();
scissors.setGraphic(new ImageView(scissorIm));
scissors.setOnAction(e -> userChoice = SCISSORS);
Button quit = new Button("Return");
quit.setOnAction(e -> window.setScene(scene1));
layout2.getChildren().addAll(rock, paper, scissors, quit);
layout2.setAlignment(Pos.CENTER);
scene2 = new Scene(layout2, 300, 300);
window.setTitle("Rock Paper Scissors");
window.setScene(scene1);
window.show();
}
}
I've been working on javafx and i want to remove default windows and create a window with my style
It's quite easy to create a window in javafx. To create your own window you need to modify the style of your stage which can be done using initStyle() method.
public class Test extends Application {
#Override
public void start(Stage primaryStage) throws Exception {
Scene scene = new Scene(createParent(), Color.TRANSPARENT);
primaryStage.initStyle(StageStyle.TRANSPARENT);
// primaryStage.initStyle(StageStyle.UNDECORATED);
// primaryStage.initStyle(StageStyle.DECORATED);
primaryStage.setTitle("My Own Window");
primaryStage.setScene(scene);
primaryStage.show();
}
private Parent createParent() {
Pane rootPane = new Pane();
rootPane.setPrefSize(1000,400);
Button btn = new Button("RandomButton");
btn.setOnAction(e -> Platform.exit());
rootPane.getChildren().add(btn);
return rootPane;
}
}
I have a JavaFx application that loads a transparent stage with some text on it.
I want any click on the application to be completely ignored and the background application (if any) to receive that click.
My code at this stage is as follows:
public void start(final Stage primaryStage) {
primaryStage.setAlwaysOnTop(true);
final StackPane layout = new StackPane();
final Text mainText = new Text();
layout.getChildren().add(mainText);
mainText.setText("|||||||||||||||||||||||||||");
final Scene mainScene = new Scene(layout);
mainScene.setFill(null);
primaryStage.initStyle(StageStyle.TRANSPARENT);
primaryStage.setScene(mainScene);
primaryStage.show();
layout.setMouseTransparent(true);
mainText.setMouseTransparent(true);
}
I was not able to achieve the requirement. setMouseTransparent() just prevented the text from triggering events, it still captured the mouse clicks.
Is it possible to achieve this in JavaFx ? Even if it is a per-OS solution.
A way of doing this action in Windows is through user32.dll and Java Native Access (JNA). We used GetWindowLong to get the current configuration of the window and SetWindowLong to update the bit field that is controlling the ability of the window be transparent to the mouse.
Following is a working example that demonstrates this functionality:
#Override
public void start(final Stage primaryStage) {
primaryStage.setAlwaysOnTop(true);
final StackPane layout = new StackPane();
final Text mainText = new Text();
layout.getChildren().add(mainText);
mainText.setText("|||||||||||||||||||||||||||");
final Scene mainScene = new Scene(layout);
mainScene.setFill(null);
primaryStage.initStyle(StageStyle.TRANSPARENT);
primaryStage.setScene(mainScene);
primaryStage.setTitle(sTitle);
primaryStage.show();
sUser32.EnumWindows(
(hWnd, data) -> {
final byte[] windowText = new byte[512];
sUser32.GetWindowTextA(hWnd, windowText, 512);
final String wText = Native.toString(windowText);
if (!wText.isEmpty() && wText.equals(sTitle)) {
final int initialStyle = com.sun.jna.platform.win32.User32.INSTANCE.GetWindowLong(hWnd, WinUser.GWL_EXSTYLE);
com.sun.jna.platform.win32.User32.INSTANCE.SetWindowLong(hWnd, WinUser.GWL_EXSTYLE, initialStyle | WinUser.WS_EX_TRANSPARENT );
return false;
}
return true;
}, null);
}
I have this piece of code which doesn't work correctly.
I want to set a listener for when a user clicks inside the square, yet
neither the pop-up nor the message "clicked" are displayed when I click
inside the square.
What am I missing?
This method is inside the Coords class.
public static void drawMyShape(final GraphicsContext ctx) {
Path path = new Path();
MoveTo mT = new MoveTo();
LineTo lT[] = new LineTo[4];
mT.setX(200.0);
mT.setY(200.0);
lT[0] = new LineTo(400.0, 200.0);
lT[1] = new LineTo(400.0, 400.0);
lT[2] = new LineTo(200.0, 400.0);
lT[3] = new LineTo(200.0, 200.0);
path.setStroke(Color.BEIGE);
path.getElements().addAll(mT, lT[0], lT[1], lT[2], lT[3]);
path.setOnMouseClicked(new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent event) {
final Stage dialog = new Stage();
dialog.initModality(Modality.APPLICATION_MODAL);
dialog.initOwner(Main.prim_stage);
VBox box = new VBox(20);
box.getChildren().add(new Text("Hey"));
Scene s = new Scene(box, 300, 200);
dialog.setScene(s);
dialog.show();
System.out.println("Clicked");
}
});
ctx.setLineWidth(4.0);
ctx.beginPath();
ctx.moveTo(mT.getX(), mT.getY());
for (int i = 0; i < lT.length; i++) {
ctx.lineTo(lT[i].getX(), lT[i].getY());
}
ctx.closePath();
ctx.stroke();
}
EDITED ON SUGGESTION by users.
So his is the main program:
public class Main extends Application {
public static Pane root;
private static Canvas main_canvas;
private static GraphicsContext ctx;
private static Rectangle2D bounds;
private static Scene scene;
public static Stage prim_stage;
#Override
public void start(Stage primaryStage) throws Exception {
primaryStage.setTitle("Switzerland Advertising");
initElements(primaryStage);
Coords.drawMyShape(ctx);
primaryStage.show();
System.out.println("Launched");
}
public static void main(String[] args) {
launch(args);
}
}
Everything is instanciated inside the following function, which works correctly and displays a full screen application with a canvas and a square drawn into it (image at the bottom).
private void initElements(final Stage primaryStage) {
prim_stage = primaryStage;
// ----------------------------------------
bounds = Screen.getPrimary().getVisualBounds();
double w = bounds.getWidth();
double h = bounds.getHeight();
// ----------------------------------------
// init elements of scene
root = new Pane();
main_canvas = new Canvas(w, h);
// ----------------------------------------
// init scene elements
scene = new Scene(root, w, h);
primaryStage.setX(bounds.getMinX());
primaryStage.setY(bounds.getMinY());
primaryStage.setWidth(w);
primaryStage.setHeight(h);
primaryStage.setScene(scene);
// ----------------------------------------
ctx = main_canvas.getGraphicsContext2D();
// set elements in main pane
root.getChildren().add(main_canvas);
// ----------------------------------------
}
So how can I make the pop-up window appear whenever I click inside the region drawn on the canvas?
This is the program
Your path is just a local variabl within your method. It has to be attached to the scene graph in order to get events. But when you attach it to the scene graph, drawing the same path on a canvas also does not make much sense.
Is there any way to sort a ObservableList based on the values from high to low?
Say I have a
ObservableList<XYChart.Data> data;
containing a String and a Double. I want the list sorted based on the Double from highest to lowest values. The reason I want this is because charts look way better if their values are shown from the highest to the lowest.
I have something like this now:
sortedData = new SortedList<>(data);
sortedData.comparatorProperty().bind(mycomparatorProperty());
You can create a Comparator, compare by the Y value, and then reverse the order:
data.sort(Comparator.comparing(XYChart.Data<String,Double>::getYValue).reversed());
This will sort your collection as intented.
Or you can return a new collection:
List<XYChart.Data<String,Double>> sortedData =
data.stream()
.sorted(Comparator.comparing(XYChart.Data<String,Double>::getYValue).reversed())
.collect(Collectors.toList());
EDIT
For the sake of clarity, this is a full sample:
public class FXMain extends Application {
private final ObservableList<XYChart.Data<String,Double>> data =
FXCollections.observableArrayList(
new XYChart.Data("P1",200d),
new XYChart.Data("P2",150d),
new XYChart.Data("P3",250d));
#Override
public void start(Stage primaryStage) {
Button btn = new Button"Sort data!");
btn.setOnAction(e -> {
ObservableList<XYChart.Data<String,Double>> data2 =
data.stream()
.sorted(Comparator.
comparing(XYChart.Data<String,Double>::getYValue).reversed())
.peek(System.out::println)
.collect(Collectors.toCollection(()->FXCollections.observableArrayList()));
});
StackPane root = new StackPane();
root.getChildren().add(btn);
Scene scene = new Scene(root, 300, 250);
primaryStage.setTitle("Hello World!");
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}