CODEWITHSUNDEEP
javaswingjlabel
CaffeineToCode
CaffeineToCode

Reputation: 830

What am I doing wrong with setVertical/HorizantalAlignment?

I am playing around with Java GUIs, and I came across JLabel.setVerticalAlignment. I have set something up so that curlLeft and curlRight would go to the corners. However, it does not seem to have ny effect. Why is that so?

private void prepareGUI() throws IOException {

        mainFrame = new JFrame("Holy Bible");
        mainFrame.setSize(700, 500);
        mainFrame.setLayout(new GridLayout(1, 2));
        mainFrame.setLocationRelativeTo(null);
        mainFrame.setIconImage(new ImageIcon(getClass().getResource("/assets/bible/textures/icon.png")).getImage());
        mainFrame.getContentPane().setBackground(Color.WHITE);
        mainFrame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent windowEvent) {
                System.exit(0);
            }
        });
        mainFrame.addKeyListener(this);

        leftPanel = new JPanel();
        leftPanel.setBackground(Color.WHITE);
        leftPanel.setLayout(new FlowLayout());

        rightPanel = new JPanel();
        rightPanel.setBackground(Color.WHITE);
        rightPanel.setLayout(new FlowLayout());

        leftLabel = new JLabel("", JLabel.CENTER);
        leftLabel.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 12));
        leftPanel.add(leftLabel);

        rightLabel = new JLabel("", JLabel.CENTER);
        rightLabel.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 12));
        rightPanel.add(rightLabel);

        leftCurl = new JLabel();
        leftCurl.setHorizontalAlignment(JLabel.LEFT);
        leftCurl.setVerticalAlignment(JLabel.BOTTOM);
        leftCurl.setIcon(new ImageIcon(getClass().getResource("/assets/bible/textures/curlleft15.png")));
        leftPanel.add(leftCurl);

        rightCurl = new JLabel();
        rightCurl.setHorizontalAlignment(JLabel.RIGHT);
        rightCurl.setVerticalAlignment(JLabel.BOTTOM);
        rightCurl.setIcon(new ImageIcon(getClass().getResource("/assets/bible/textures/curlright15.png")));
        rightPanel.add(rightCurl, BorderLayout.SOUTH);

        mainFrame.add(leftPanel);
        mainFrame.add(rightPanel);
        mainFrame.setExtendedState(JFrame.MAXIMIZED_BOTH); // Maximizes frame
        mainFrame.setUndecorated(fullScreen);
        mainFrame.setVisible(true);
    }

All the variables needed are initialized at class level.

Upvotes: 0

Views: 61

Answers (1)

DWilches
DWilches

Reputation: 23015

Your JLabels are not going to the corners because you are adding them to JPanels that have a FLowLayout. With FlowLayout your components don't occupy the 100% of the space of the JPanel, they only occupy the necessary.

I changed the 2 FlowLayouts to GridLayouts and now I can see the different orientations.

(Also, as your objective is learning how this works, I recommend you set a border on each component so you can see where their bounds are. This is quite good for understanding Swing's layout management).

Upvotes: 4

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