Set 3 slidebar: value from 0 to 255, 3 slidebar set as red, green and blue. I try to bind 3 slidebars to color and it's faild. So how can I solve this? When I change the slidebar, the color can change? How can I program this function? Thanks.
code:
public class FXMLDocumentController implements Initializable {
#FXML
private Label label;
#FXML
private Slider redbar;
#FXML
private Slider greenbar;
#FXML
private Slider bluebar;
#FXML
private void handleButtonAction(ActionEvent event) {
}
#Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
Integer redValue=(int)redbar.getValue();
Integer greenValue=(int)greenbar.getValue();
Integer blueValue=(int)bluebar.getValue();
Color col=Color.rgb(redValue,greenValue,blueValue);//I only can set as like this, then pass color to laber
// I wanner bind col with laber.backgroundProperty() here
}
Using getValue() will give you the value at current time. If you want to react to changes you will need to attach a listener to the corresponding property:
ChangeListener myListener = new ChangeListener() {
#Override
public void changed(...) {
// Collect current values and set rgb color
}
...
redValue.valueProperty().addListener(myListener);
greenValue.valueProperty().addListener(myListener);
blueValue.valueProperty().addListener(myListener);
In your comments you wrote you want to bind the value. What you're doing in your code is not binding at all however. You simply retrieve the value just after the fxml has been loaded before the scene is even rendered.
Instead you need to create a binding depending on the slider values:
#Override
public void initialize(URL url, ResourceBundle rb) {
label.backgroundProperty().bind(Bindings.createObjectBinding(() -> new Background(new BackgroundFill(Color.rgb((int) redbar.getValue(),
(int) greenbar.getValue(),
(int) bluebar.getValue()),
CornerRadii.EMPTY,
Insets.EMPTY)),
redbar.valueProperty(),
greenbar.valueProperty(),
bluebar.valueProperty()));
}
I want to create a RippleAnimation, so I made a circle and used ScaleTransition and put it in a Button using the method setGraphic(..);
Sample Code:
final Circle circle = new Circle(3);
circle.setFill(Color.color(0, 0, 0, 0.2));
ScaleTransition scaleTransition = new ScaleTransition(Duration.millis(500), circle);
scaleTransition.setToX(50f);
scaleTransition.setToY(50f);
scaleTransition.setAutoReverse(false);
scaleTransition.setCycleCount(1);
button.setGraphic(circle);
button.setOnMouseEntered(new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent event) {
scaleTransition.play();
}
});
...
but it gets over the Button:
How i can achieve that the circle doesn't get over the button?
Simply use shape clipping:
Rectangle clip = new Rectangle();
clip.widthProperty().bind(button.widthProperty());
clip.heightPropety().bind(button.heightProperty());
circle.setClip(clip);
Hope this works, cause haven't worked with setGraphics() ever. Maybe try putting button + circle into a StackPane to achieve same results.
In a UI of mine, I have a PasswordField like so (urm the one at the bottom!):
I want a user to be able to check the checkbox you see in the picture and have all "secret" password characters displayed. Not much different from the option we get from many modern password-asking UI:s floating around. However, I cannot find anything in the JavaFX API that let me do that?
If my worries hold true, then I would like to use a TextField that display the last key pressed for only half a second or until next key is pressed, and then he shall mask all previous user input. This would produce a cool animation effect that one can see sometimes in modern UI:s. However, is there a way for me to get hold of the OS dependent (I think it is OS dependent??) password echo character I should use?
If it is not possible to get that OS dependent character, then I'd be glad to use the character you see on the picture (JavaFX on a Windows 8 machine). What is the UTF-8 code point for this stranger?
> However, I cannot find anything in the JavaFX API that let me do that?
The PasswordField component does not display masked text by default. However you can use PasswordField with TextField and toggle masked/unmasked text using these components respectively. Where the unmasked text is shown by TextField, as in example demo below.
> I would like to use a TextField that display the last key pressed for only half a second or until next key is pressed, and then he shall mask all previous user input.
Since PasswordField, itself is a extended version of TextField. You can always build your own custom password textbox with properties you mentioned.
> is there a way for me to get hold of the OS dependent (I think it is OS dependent??) password echo character I should use?
Frankly did not grab what you are saying here. You can track text changes by adding change listener to PasswordField.textPrperty() and do animations, timers etc. You can override the default bullet mask by extending PasswordFieldSkin and using it through CSS -fx-skin. See the definition of bullet in its source here:
public class PasswordFieldSkin extends TextFieldSkin {
public static final char BULLET = '\u2022';
public PasswordFieldSkin(PasswordField passwordField) {
super(passwordField, new PasswordFieldBehavior(passwordField));
}
#Override protected String maskText(String txt) {
TextField textField = getSkinnable();
int n = textField.getLength();
StringBuilder passwordBuilder = new StringBuilder(n);
for (int i=0; i<n; i++) {
passwordBuilder.append(BULLET);
}
return passwordBuilder.toString();
}
}
Finally, Here is kick off demo app of showing password characters using bindings:
#Override
public void start(Stage primaryStage) {
// text field to show password as unmasked
final TextField textField = new TextField();
// Set initial state
textField.setManaged(false);
textField.setVisible(false);
// Actual password field
final PasswordField passwordField = new PasswordField();
CheckBox checkBox = new CheckBox("Show/Hide password");
// Bind properties. Toggle textField and passwordField
// visibility and managability properties mutually when checkbox's state is changed.
// Because we want to display only one component (textField or passwordField)
// on the scene at a time.
textField.managedProperty().bind(checkBox.selectedProperty());
textField.visibleProperty().bind(checkBox.selectedProperty());
passwordField.managedProperty().bind(checkBox.selectedProperty().not());
passwordField.visibleProperty().bind(checkBox.selectedProperty().not());
// Bind the textField and passwordField text values bidirectionally.
textField.textProperty().bindBidirectional(passwordField.textProperty());
VBox root = new VBox(10);
root.getChildren().addAll(passwordField, textField, checkBox);
Scene scene = new Scene(root, 300, 250);
primaryStage.setTitle("Demo");
primaryStage.setScene(scene);
primaryStage.show();
}
You need create three elements:
TextField : the password visible field
PasswodField : the password not visible field
CheckBox : the toggle visibility field
You place the passwords fields in the same position(x, y):
<PasswordField fx:id="pass_hidden" layoutX="X" layoutY="Y" />
<TextField fx:id="pass_text" layoutX="X" layoutY="Y"/>
<CheckBox fx:id="pass_toggle" onAction="#togglevisiblePassword" .... />
Note: Replaces the value of X and Y.
Add in your controller:
#FXML
private TextField pass_text;
#FXML
private CheckBox pass_toggle;
#FXML
private Button btn_start_stop;
/**
* Controls the visibility of the Password field
* #param event
*/
#FXML
public void togglevisiblePassword(ActionEvent event) {
if (pass_toggle.isSelected()) {
pass_text.setText(pass_hidden.getText());
pass_text.setVisible(true);
pass_hidden.setVisible(false);
return;
}
pass_hidden.setText(pass_text.getText());
pass_hidden.setVisible(true);
pass_text.setVisible(false);
}
//Run
#Override
public void initialize(URL location, ResourceBundle resources) {
this.togglevisiblePassword(null);
}
If you want to know the value of the password you can create a method that returns it:
private String passwordValue() {
return pass_toggle.isSelected()?
pass_text.getText(): pass_hidden.getText();
}
I know this is older, but i was searching for answer and this is my solution:
#FXML
private JFXButton showpassword;
private String password;
showpassword.addEventFilter(MouseEvent.MOUSE_PRESSED, e -> {
password = passwordField.getText();
passwordField.clear();
passwordField.setPromptText(password);
});
showpassword.addEventFilter(MouseEvent.MOUSE_RELEASED, e -> {
passwordField.setText(password);
passwordField.setPromptText("Password");
});
Using button with graphic like "WIN10 Eye - unmask password"
You could use a custom Tooltip to show the password, and use the Checkbox to show / hide the Tooltip.
The code for this demo can be found here.
void viewpass(ActionEvent event) {
if (checkpass.isSelected()){
pass.setPromptText(pass.getText());
pass.setText("");
pass.setDisable(true);
}else {
pass .setText(pass.getPromptText());
pass.setPromptText("");
pass.setDisable(false);
}
}
You can also do it using textfield and password field with radio button As follows.
import javafx.fxml.Initializable;
import com.jfoenix.controls.*;
import com.jfoenix.controls.JFXPasswordField;
import com.jfoenix.controls.JFXRadioButton;
import javafx.fxml.FXML;
import java.net.URL;
import java.util.ResourceBundle;
public class Controller implements Initializable{
#FXML
private JFXPasswordField PasswordField;
#FXML
private JFXRadioButton passVisible;
#FXML
private JFXTextField textField1;
#Override
public void initialize(URL location, ResourceBundle resources)
{
textField1.textProperty().bind(PasswordField.textProperty());
textField1.visibleProperty().bind(passVisible.selectedProperty());
PasswordField.visibleProperty().bind(passVisible.selectedProperty().not());
}
}
well, the password field has one property that can be set the text in bullets.. this method maskText(String txt) stays on skin.. you can replace this with a new Skin.. when you type the method maskText test if you can raplace in bullets.. use one boolean to inform.. you can reuse this code from another event. it's an example. Regards
public class Main extends Application {
#Override
public void start(Stage stage) throws Exception {
StackPane root = new StackPane();
root.setAlignment(Pos.CENTER);
root.setPadding(new Insets(50));
PasswordField passwordField = new PasswordField();
passwordField.setSkin(new VisiblePasswordFieldSkin(passwordField));
root.getChildren().add(passwordField);
stage.setScene(new Scene(root, 400, 400));
stage.show();
}
}
class VisiblePasswordFieldSkin extends TextFieldSkin {
private final Button actionButton = new Button("View");
private final SVGPath actionIcon = new SVGPath();
private boolean mask = true;
public VisiblePasswordFieldSkin(PasswordField textField) {
super(textField);
actionButton.setId("actionButton");
actionButton.setContentDisplay(ContentDisplay.GRAPHIC_ONLY);
actionButton.setPrefSize(30,30);
actionButton.setFocusTraversable(false);
actionButton.setBackground(new Background(new BackgroundFill(Color.TRANSPARENT, CornerRadii.EMPTY, new Insets(0))));
getChildren().add(actionButton);
actionButton.setCursor(Cursor.HAND);
actionButton.toFront();
actionIcon.setContent(Icons.VIEWER.getContent());
actionButton.setGraphic(actionIcon);
actionButton.setVisible(false);
actionButton.setOnMouseClicked(event -> {
if(mask) {
actionIcon.setContent(Icons.VIEWER_OFF.getContent());
mask = false;
} else {
actionIcon.setContent(Icons.VIEWER.getContent());
mask = true;
}
textField.setText(textField.getText());
textField.end();
});
textField.textProperty().addListener((observable, oldValue, newValue) -> actionButton.setVisible(!newValue.isEmpty()));
}
#Override
protected void layoutChildren(double x, double y, double w, double h) {
super.layoutChildren(x, y, w, h);
layoutInArea(actionButton, x, y, w, h,0, HPos.RIGHT, VPos.CENTER);
}
#Override
protected String maskText(String txt) {
if (getSkinnable() instanceof PasswordField && mask) {
int n = txt.length();
StringBuilder passwordBuilder = new StringBuilder(n);
for (int i = 0; i < n; i++) {
passwordBuilder.append(BULLET);
}
return passwordBuilder.toString();
} else {
return txt;
}
}
}
enum Icons {
VIEWER_OFF("M12 6c3.79 0 7.17 2.13 8.82 5.5-.59 1.22-1.42 2.27-2." +
"41 3.12l1.41 1.41c1.39-1.23 2.49-2.77 3.18-4.53C21.27 7.11 17 4 12 4c-1.27 " +
"0-2.49.2-3.64.57l1.65 1.65C10.66 6.09 11.32 6 12 6zm-1.07 1.14L13 9.21c.57.25 1.03.71 " +
"1.28 1.28l2.07 2.07c.08-.34.14-.7.14-1.07C16.5 9.01 14.48 7 12 7c-.37 0-.72.05-1.07." +
"14zM2.01 3.87l2.68 2.68C3.06 7.83 1.77 9.53 1 11.5 2.73 15.89 7 19 12 19c1.52 0 2.98-.29 " +
"4.32-.82l3.42 3.42 1.41-1.41L3.42 2.45 2.01 3.87zm7.5 7.5l2.61 2.61c-.04.01-.08.02-.12.02-1.38 " +
"0-2.5-1.12-2.5-2.5 0-.05.01-.08.01-.13zm-3.4-3.4l1.75 1.75c-.23.55-.36 1.15-.36 1.78 0 2.48 2.02 " +
"4.5 4.5 4.5.63 0 1.23-.13 1.77-.36l.98.98c-.88.24-1.8.38-2.75.38-3.79 0-7.17-2.13-8.82-5.5.7-1.43 1.72-2.61 2.93-3.53z"),
VIEWER("M12 4.5C7 4.5 2.73 7.61 1 12c1.73 4.39 6 7.5 11 7.5s9.27-3.11 11-7.5c-1.73-4.39-6-7." +
"5-11-7.5zM12 17c-2.76 0-5-2.24-5-5s2.24-5 5-5 5 2.24 5 5-2.24 5-5 5zm0-8c-1.66 0-3 1.34-3 3s1.34 3 3 3 3-1.34 3-3-1.34-3-3-3z");
private String content;
Icons(String content) {
this.content = content;
}
public String getContent() {
return content;
}
}
View in GitHub
Been trying around and searching but couldn't find any solution, so I finally decided to give up and ask further...
Creating a javafx app, I load tiles in a TilePane.
This tiles are clickable and lead to a details page of their respective content.
On each tile, if they do belong to a certain pack, I do display the pack name, that is also clickable and lead to a page showing that specific pack content.
So that means the container, the tile, that is a Pane is clickable and on top of it I have a Label that is claickable also. What happens is when I do click the Label, it also triggers the Pane onMousePressed()... Here is a part of the tile creation code, the part focused on the onMousePressed(). I tried to make the Pane react by double click and the Label by single, it works, but I want to Pane to open with a single click.
I would be more than thankfull for any ideas how to solve that.
public DownloadTile (Downloadable upload, MainApp mainApp) {
_mainApp = mainApp;
_upload = upload;
_tile = new Pane();
_tile.setPrefHeight(100);
_tile.setPrefWidth(296);
_tile.setStyle("-fx-background-color: #ffffff;");
_tile.setCursor(Cursor.HAND);
}
public void refresh() {
_tile.getChildren().clear();
_tile.setOnMousePressed(new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent event) {
if (event.isPrimaryButtonDown() /*&& event.getClickCount() == 2*/) {
_mainApp.showDownloadDialog(dt, _upload);
}
}
});
if (_upload.getPack() != null) {
Label pack = new Label();
pack.setText(_upload.getPack());
pack.getStyleClass().add("pack-link");
pack.setCursor(Cursor.HAND);
pack.relocate(10, 48);
_tile.getChildren().add(pack);
pack.setOnMousePressed(new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent event) {
if (event.isPrimaryButtonDown()) {
_mainApp.showPackPage(_upload);
}
}
});
}
}
Your label will receive the mouseclick first (since it's on top), so after you have processed the click, you can stop it from being passed down the chain using 'consume':
pane.setOnMouseClicked(
(Event event) -> {
// process your click here
System.out.println("Panel clicked");
pane.requestFocus();
event.consume();
};
I'm trying to create a JavaFX program that creates a circle when you click on the screen. There can be many circles at once. But I can't think of a solution to how to increase a circle's radius when I click on it again.
public class Controller implements Initializable {
#FXML
private Button reset;
#FXML
private AnchorPane anchor;
#FXML
private BorderPane border;
Circle circle = new Circle();
int radius = 20;
public void initialize (URL location, ResourceBundle resources) {
anchor.setOnMouseClicked(event -> {
border.getChildren().add(circle = new Circle());
circle.setCenterX(event.getX());
circle.setCenterY(event.getY());
circle.setRadius(radius);
});
reset.setOnAction(event -> {
border.getChildren().clear();
});
circle.setOnMouseClicked(event -> {
circle.setRadius(radius * 1.5);
});
}
}
The field you declare as circle is never added to the scene graph. So it never appears and its mouseClicked handler is never invoked.
On the other hand, the circles you do add to the scene graph have no mouse clicked handler associated with them. You need to register a handler when you create them:
anchor.setOnMouseClicked(event -> {
Circle circle = new Circle();
border.getChildren().add(circle);
circle.setCenterX(event.getX());
circle.setCenterY(event.getY());
circle.setRadius(radius);
circle.setOnMouseClicked(e -> {
circle.setRadius(circle.getRadius() * 1.5);
// prevent event from propagating to pane:
e.consume();
});
});
And now just get rid of the circle instance field and the handler you associate with it entirely.