There is an option to bind CSS files to add style to JavaFX components.
But I want to change some properties dynamically in code.
There is a setStyle() method but there is not enough documentation available on using it.
I want to change the hover color from the setStyle() method instead of the .css file.
Here is the code for the .css file
.list-cell:filled:hover
{
-fx-background-color: #0093ff;
-fx-text-fill: white;
}
and I want to change the hover color from the setStyle() method dynamically like this:
noteListView.setStyle(
":filled:hover{" +
"-fx-background-color: #65ffb0;" +
"-fx-text-fill: white;" +
"}");
But this does not work. Any help is appreciated. Thanks.
Why don't you try something like that, I used it to change the color of a specific serie on a chart which be selected from a tableview.
table.getSelectionModel().selectedIndexProperty().addListener( (observable, oldValue, newValue) -> changeId(oldValue, newValue));
public void changeId(Number oldV, Number newV){
if(oldV.intValue() != -1){
lineChart.getData().get(oldV.intValue()).getNode().setId("serie-unselect");
}
if(newV.intValue() != -1){
lineChart.getData().get(newV.intValue()).getNode().setId("serie-select");
}
}
Then in the css file, you add #serie-select{} and #serie-unselect{} with good options.
Related
I am working on a Javafx application and I tried to add some Labels, Buttons and Texts, which resizes when the user resizing the Scene. All Nodes are inside a VBox, which itself is inside a StackPane.
My test application:
public class Test extends Application
{
public static void main(String[] args)
{
launch(args);
}
#Override
public void start(final Stage primaryStage)
{
StackPane pane = new StackPane();
VBox box = new VBox();
box.setAlignment(Pos.CENTER);
Label l = new Label("Label");
Text t = new Text("Text");
t.getStyleClass().add("test");
Button b = new Button("Button");
pane.heightProperty().addListener(listener ->
{
double h = pane.getHeight()/5;
l.setFont(Font.font(l.getFont().getFamily(), h));
t.setFont(Font.font(t.getFont().getFamily(), h));
b.setFont(Font.font(b.getFont().getFamily(), h));
});
box.getChildren().addAll(l, t, b);
pane.getChildren().add(box);
primaryStage.setScene(new Scene(pane));
primaryStage.getScene().getStylesheets().add(Path.of("test.css").toUri().toString());
primaryStage.show();
}
}
If I resize the Stage it works as expected. But unfortunately only with pure Java code.
Because after adding my css file, the Labeled controls behave different. While the Text elements continue to change in size, the Labels and Buttons does not change their size anymore.
My css file, which does not work:
.label
{
-fx-text-fill: red;
-fx-font-family: impact;
}
.test
{
-fx-fill: red;
-fx-font-family: impact;
-fx-font-size: 2em;
}
.button
{
-fx-text-fill: red;
-fx-font-size: 2em;
}
I asked myself what I did wrong and have tested different css states. I found out, when I omit font values in css it works, otherwise it does not. Therewhile it does not matter which font value occurs, only one font value is required to miss the behavior.
My css file, which works:
.label
{
-fx-text-fill: red;
//-fx-font-family: impact;
}
.test
{
-fx-fill: red;
-fx-font-family: impact;
-fx-font-size: 2em;
}
.button
{
-fx-text-fill: red;
//-fx-font-size: 2em;
}
1. Question: -has changed, see below-
Do I missunderstand something about css and Javafx, or did I something wrong in my css file or is there a bug?
2. Question: -solved-
Have I to put the font values with java code or is there an other way to add the font?
Thank You for helping!
Update
As recommended I have studying the follow guide:
https://openjfx.io/javadoc/14/javafx.graphics/javafx/scene/doc-files/cssref.html
The JavaFX CSS implementation applies the following order of precedence:
The implementation allows designers to style an application by using style sheets to override property values set from code. For example, a call to rectangle.setFill(Color.YELLOW) can be overridden by an inline‑style or a style from an author stylesheet. This has implications for the cascade; particularly, when does a style from a style sheet override a value set from code? The JavaFX CSS implementation applies the following order of precedence: a style from a user agent style sheet has lower priority than a value set from code, which has lower priority than a Scene or Parent style sheet. Inline styles have highest precedence. Style sheets from a Parent instance are considered to be more specific than those styles from Scene style sheets.
In my case this means, I will use the inline style to make it proper.
thus the 2. Question is solved
But, because of Parent style sheet > value set from code, it also means, all Nodes are not allowed to change theire size, even the Text Node.
Therefore I changed my 1. Question to:
Why does the JavaFX CSS order of precedence differ between Text and Controls
Question 1:
It's not a bug, it's a conflict of priorities. .setFont() has a lower priority than that CSS. Just replace .setFont() to .setStyle() and sample will work as you planned:
l.setStyle("-fx-font-size:" + h + ";");
t.setStyle("-fx-font-size:" + h + ";");
b.setStyle("-fx-font-size:" + h + ";");
Question 2:
Try to keep all about styles in CSS. It's the best practice.
I have a TableView clear.
I have an button1, when I click this I added a row in my tableView and I select the row. This row is in red by the line css :
.table-row-cell:selected {-fx-background-color: red;}
Next, I have a button2, and I would like that when I click on the button2, the background color on my row selected change in blue.
Help me.
Thanks.
add this code into your .css file:
#blue_cell .table-row-cell:selected{
-fx-background-color: blue;
}
then add this into your java file
button2.setOnAction(e -> productsTable.setId("blue_cell"));
You have many ways for changing the values of properties in css from java code.
You can define a look-up color in css and use setStyle() method in java like that :
.table-view {
-selected-color:red;
}
.table-row-cell:selected{
-fx-background-color: -selected-color;
}
Then use setStyle() method :
button2.setOnAction(e -> table.setStyle("-selected-color:blue;"));
Can anyone please help me with wrapping the text in a legend of a javafx chart. I have pie charts and bar charts. All the legends are placed at bottom. I tried the following but couldn't get it working.
for (Node node : pie.lookupAll(".chart-legend")) {
if (node instanceof Text) {
System.out.println("Text instance");
((Text) node).setWrappingWidth(380);
((Text) node).setManaged(true);
}
if (node instanceof Label) {
System.out.println("Label instance");
((Label) node).setWrapText(true);
((Label) node).setManaged(true);
((Label) node).setPrefWidth(380);
}
}
EDIT:
See the highlighted part. Still some text is not visible.
I finally got it. Trying to wrap text in css didn't work as label width cannot be controlled there. So the following code can be used to wrap the text programmatically.
for (Node node : pie.lookupAll(".chart-legend-item")) {
if (node instanceof Label) {
System.out.println("Label instance");
((Label) node).setWrapText(true);
((Label) node).setManaged(true);
((Label) node).setPrefWidth(380);
}
}
Did you have a look at the CSS documentation?
This link is refering to the chart legend section:
JavaFX CSS Reference
As mentioned, it's of the type Label, so we can have a look here as well.
-fx-wrap-text possibly does the trick. Of course you would need to write and attach your own CSS file to your program...
For a more detailed example, please refer to your JDKs jfxrt.jar, unzip it and look for the modena.css, which is the default CSS file.
Regards.
Daniel
Edit: I got the following snipped to actually have an impact on or application after all:
.chart-legend {
-fx-background-color: transparent;
-fx-padding: 20px;
}
.chart-legend-item-symbol {
-fx-background-radius: 0;
}
.chart-legend-item {
-fx-text-fill: #191970;
}
But it is important, where you place it in your CSS. In my first attempt, I placed it above the CSS rule, which set the default label text color.
When I noticed this, I put it at the end of my CSS file: et vóila - it worked.
So please have a second look, that your placed accordingly in your own CSS.
I would like to provide for user possiblity to select color of TextArea:
private void updateTextArea(){
textArea.setStyle("-fx-text-fill: #" + textColor + "; -fx-background-color: #" + backgroundColor);
}
however this doesnt change color of whole background. Ive found on the Internet that to change backgroud of text Area I need to do something like this in external CSS file.
.text-area .content {
-fx-background-color: black ;
}
how Can I do this with setStyle()?
You can do this by fetching the content node out of the TextArea and applying the style to it. But it works only after the TextArea is shown on the stage.
Usage :
Node node = textArea.lookup(".content");
node.setStyle("-fx-background-color: black;");
I am working with java fxml application and i have one hyperlink, I want to change its color when mouse is over it and again revert back when mouse is exited from it. Can any body post some code to achieve it. I tried some css code but not working,
On mouse entered:-
#FXML
private void changeCloseColorToWhite() {
hypLnkClose.setStyle("-fx-color: white;");
}
On mouse exited:-
#FXML
private void changeCloseColorToBrown() {
hypLnkClose.setStyle("-fx-color: #606060;");
}
Thanks in advance.
Setting style in java code is heavy on the application. I would suggest defining this in the CSS file. try something like this below to fulfill what you need:
.hyperlink:hover {
-fx-underline: true;
}
You can also do like this
your_file.fxml(This is you .fxml file)
<Hyperlink text="you text to being hyperlink" styleClass="myLink">
your_style.css(This is your styleSheet file)
.myLink{
-fx-text-fill: white;
}
.myLink:hover{
-fx-text-fill: #606060;
}
This will also work fine. So try it