java - JavaFx GridPane - how to center elements

Question

I have a GridPane filled with 1-letter-labels.

Here is an image:

Here is the code:

int charSpacing = 1;
int charsInWidth = 28;
int charsInHeight = 16;

double charWidth = 15;
double charHeight = 20;

GridPane gp = new GridPane();
gp.setAlignment(Pos.CENTER);

Label[] tmp = new Label[charsInHeight*charsInWidth];

String text = "W";
int currArrPos = 0;

for(int y = 0; y < charsInHeight; y++) {
    HBox hbox = new HBox(charSpacing);

    for(int x = 0; x < charsInWidth; x++) {
        tmp[currArrPos] = new Label(text);
        tmp[currArrPos].setTextFill(Paint.valueOf("white"));

        tmp[currArrPos].setMinHeight(charHeight);
        tmp[currArrPos].setMinWidth(charWidth);
        tmp[currArrPos].setMaxHeight(charHeight);
        tmp[currArrPos].setMaxWidth(charWidth);

        tmp[currArrPos].setStyle("-fx-border-color: white;");
        hbox.getChildren().add(tmp[currArrPos++]);

        if(x%2 == 0){
            text = "I";
        } else{
            text = "W";
        }
    }
    gp.add(hbox, 1, y);
}
guiDisplay.getChildren().add(gp);

How can I center the characters?

I have put them in a HBox and gave them spacing. I tried to make the textAlignment of the label to CENTER, but that doesn't work of course.

I tried this also:

gp.setAlignment(Pos.CENTER);

Has anybody an idea? Thanks!

Answer 1

• You can use this GridPane.setHalignment(tmp[currArrPos], HPos.CENTER); Using GridPane to layout controls