3
I would like to do something like this one, a grid based on an array (and that based on the value of the matrix, set a color to the corresponding cell), and I can manipulate it with the mouse.
1 answer
4
Based on an example of chessboard, made this example of grid filled with Jlabels, where clicking on any of them changes the background color to black. Using it as a basis, you can better develop your idea.
This class will create a populated Jlabels panel in a Gridlayout:
class GridPane extends JPanel {
private static final long serialVersionUID = 1L;
private int rows;
private int column;
private JLabel[][] squares;
public GridPane(int rows, int column) {
this.rows = rows;
this.column = column;
this.setLayout(new GridLayout(rows, column));
this.squares = new JLabel[this.rows][this.column];
for (int r = 0; r < this.rows; r++) {
for (int c = 0; c < this.column; c++) {
SquareLabel square = new SquareLabel();
this.squares[r][c] = square;
this.add(square);
}
}
}
}
I also created a class, the part called SquareLabel in case you want to customize something in each square:
class SquareLabel extends JLabel {
private static final long serialVersionUID = 1L;
public SquareLabel() {
setOpaque(true);
setBorder(BorderFactory.createLineBorder(Color.black, 1));
addMouseListener(new ClickChangeColor());
}
}
I also separated the Listener, although for the example would not even be necessary, but with it already created, facilitates adding other actions that may be related to the mouse:
class ClickChangeColor extends MouseAdapter {
boolean clicked = false;
@Override
public void mouseClicked(MouseEvent e) {
clicked = !clicked;
JLabel square = (JLabel) e.getSource();
Color color = clicked ? Color.black : square.getParent().getBackground();
square.setBackground(color);
}
}
Running:
I made executable example that can be tested on Github.
Browser other questions tagged java swing
You are not signed in. Login or sign up in order to post.
Do with what? I think the question is too broad.
– user28595
I’ll make it better, but in case you’re asking the language, it’s Java (it’s in the tags).
– Lucas Caresia
Which is java I saw, but you can even do this in text mode. You didn’t set a starting point. There are N Java Apis to try this.
– user28595
Any one I accept, I just need to do this, the one you think fits best can put as an answer.
– Lucas Caresia
Just close the scope a little bit to some java graphic API, like swing, so you can answer without it being closed. If I add this tag, it can be considered change of intention by moderation.
– user28595