Vertical Table Header Cell Renderer

Question

I used the Vertical Table Header Cell Renderer that is available in this site here It works great for me but I need a clue on how can I have in some headers that are vertically aligned multiple rows like this you can see in the image of the example (Coordinate Geometry). I tried to set the strings with the appropriate \n character but I think my approach is very simplistic and wrong. Please keep it simple. Thank you!

score 4 · Answer 1 · answered Mar 25 '12 at 09:06

4

In front put <html> to make it HTML text, and use <br> (line break) instead of \n.

answered Mar 25 '12 at 09:06

Joop Eggen

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Thank you! I saw this solution in some search but I was not sure if I can implement it on java applications or on web pages only. – Vagelism Mar 25 '12 at 09:19
Thank you! Works really as I wanted. – Vagelism Mar 25 '12 at 09:25
Good one! I made a method to keep it "invisible" if you are interested. – alain.janinm Mar 25 '12 at 09:29
One more question! How can I align them now on center those lines? – Vagelism Mar 25 '12 at 09:32
You could think of `
...
` (paragraphs) instead of `
`. In general with `<... style="text-align: right; padding-top: 5px">` you can use any CSS styles. Search for SELFHTML or such for pointers. – Joop Eggen Mar 25 '12 at 09:46
Great! Both you helped me a lot! – Vagelism Mar 25 '12 at 10:03

score 3 · Accepted Answer · answered Mar 25 '12 at 09:28

From Joop answer, I made this. Instead of changing the label directly you can keep your \n.

In your file DefaultTableHeaderCellRenderer.java, replace getTableCellRendererComponent with this method :

    public Component getTableCellRendererComponent(JTable table, Object value,
              boolean isSelected, boolean hasFocus, int row, int column) {

          String str = (value == null) ? "" : value.toString();
            BufferedReader br = new BufferedReader(new StringReader(str));
            String line;
            StringBuilder sb = new StringBuilder("<HTML>");
            try {
                while ((line = br.readLine()) != null) {
                    sb.append(line).append("<br/>");
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
            sb.append("</HTML>");
        super.getTableCellRendererComponent(table, sb,
                isSelected, hasFocus, row, column);
        JTableHeader tableHeader = table.getTableHeader();
        if (tableHeader != null) {
          setForeground(tableHeader.getForeground());
        }
        setIcon(getIcon(table, column));
        setBorder(UIManager.getBorder("TableHeader.cellBorder"));
        return this;
      }

You're welcome. If you want label to be center use this in `while` : `sb.append("").append(line).append("");` — alain.janinm, Mar 25 '12 at 09:45

Vertical Table Header Cell Renderer

2 Answers2