JTable header alignment

Question

I would like to set the vertical alignment of the label in the header of my JTable-derrived class.

I am aware of setVerticalAlignment(SwingConstants.BOTTOM);

My header is much higher than the font and I would like to place the text slightly below the vertical centre.

How can I do this, without overriding paint() ?

THX

Solution 1

one of ways is to set Renderer, TableHeader by default returns JLabel, for example

  final TableCellRenderer tcrOs = myTable.getTableHeader().getDefaultRenderer();
       myTable.getTableHeader().setDefaultRenderer(new TableCellRenderer() {

            @Override
            public Component getTableCellRendererComponent(JTable table, 
                   Object value, boolean isSelected, boolean hasFocus, 
                   int row, int column) {
                JLabel lbl = (JLabel) tcrOs.getTableCellRendererComponent(table, 
                      value, isSelected, hasFocus, row, column);
                lbl.setForeground(AppVariables.textColor);
                lbl.setBorder(BorderFactory.createCompoundBorder(lbl.getBorder(), 
                      BorderFactory.createEmptyBorder(0, 5, 0, 0)));
                lbl.setHorizontalAlignment(SwingConstants.LEFT);
                if (isSelected) {
                    lbl.setForeground(Color.red);
                    lbl.setBackground(Color.lightGray);
                } else {
                    lbl.setForeground(Color.blue);
                    lbl.setBackground(Color.black);
                }
                return lbl;
            }
        });

Solution 2

JTableHeader header = table.getTableHeader();
TableCellRenderer renderer = header.getDefaultRenderer();
renderer.setVerticalAlignment(SwingConstants.BOTTOM);

Comments

[Adam]

This is NOT an answer to my question. Read the question more carefully.

[Adam]

Thanks mKobel! kleo it IS related. The trick I needed is burried in there. All I needed was: setBorder(BorderFactory.createCompoundBorder(getBorder(), BorderFactory.createEmptyBorder(6, 0, 0, 0)));

[kleopatra]

okay, I stand corrected, actually overlooked that line in all the clutter ;-)

[camickr]

Still a lot of random code to simply add a Border to a renderer. Sometimes it is hard to see the tree through the forest because you always add so much unnecessary code.

[camickr]

@Adam, I read the question 3 times. I still posted what I thought was the answer you where looking for. Usually I can read read between the lines for a poorly worded question, but I guess not this time. Next time post a proper SSCCE so we don't have to guess.

[1000ml]

There's no method setVerticalAlignment() in the TableCellRenderer interface. The renderer has to be cast to DefaultTableCellRenderer.

[Kenny Dabiri]

setVerticalAlignment cannot be found. thus code isn't Not working