Drawing a Border without insets

Question

My JTable uses colour, and so I dont want to mess up the information it displays with the standard selection background - at the moment I am experimenting with setting a border on the cell. My problem is that the border shuffles arround the text. The DefaultTableCellRenderer is a JLabel so I figures the same applies (i can make an example if anyone wants).
Is there a way of drawing a border without insets?
Edited by: 794057 on 06-Jan-2011 02:32
forgot to change title to something sensible

Answer 1

Thanks alot! I used empty borders to "pad out" the cell so the text didnt jump down when a border was only at the top of the cell. If anyone is interested here is an example showing what I did and how the box-selecting worked:
import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.border.CompoundBorder;
import javax.swing.border.EmptyBorder;
import javax.swing.border.MatteBorder;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableModel;
import saiman.quantgcms.CompoundSetupList;
import saiman.uiobjnew.JayComboBox;
public class Test {
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                final JFrame frame = new JFrame("Test");
                frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
                String[] columnNames = {"First Name",
                        "Last Name",
                        "Sport",
                        "# of Years",
                        "Vegetarian"};
                Object[][] data = {
                         {"Kathy", "Smith",
                             "Snowboarding", "52", "fasasd"},
                            {"John", "Doe",
                             "Rowing", "52", "fasasd"},
                            {"Sue", "Black",
                             "Knitting", "12", "something"},
                            {"Jane", "White",
                             "Speed reading", "522", "true!"},
                            {"Joe", "Brown",
                             "Pool", "524", "fasasd"},
                    JTable table = new JTable(data, columnNames) {
                         private static final long serialVersionUID = 1L;
                         int thickness = CompoundSetupList.getBorderThickness();
                         Color borderColor = CompoundSetupList.getBorderColor();
                         private Border left = new MatteBorder(0, thickness, 0, 0,borderColor);
                        private Border right = new MatteBorder(0, 0, 0, thickness,borderColor);
                        private Border top = new MatteBorder(thickness, 0, 0, 0,borderColor);
                        private Border bottom = new MatteBorder(0, 0, thickness, 0,borderColor);
                        private Border topBottom = new MatteBorder(thickness, 0, thickness, 0,borderColor);
                        private Border emptyTopSpacer = new EmptyBorder(thickness,0,0,0);
                        private Border emptyBottomSpacer = new EmptyBorder(0,0,thickness,0);
                        private Border emptyTopBottomSpacer = new EmptyBorder(thickness,0,thickness,0);
                        private Border Open = emptyTopBottomSpacer;
                        private Border Top = new CompoundBorder(top, emptyBottomSpacer);
                        private Border Bottom = new CompoundBorder(emptyTopSpacer, bottom);
                        private Border Both = topBottom;
                        private Border leftOpen = new CompoundBorder(left,Open);
                        private Border leftTop = new CompoundBorder(left,Top);
                        private Border leftBottom = new CompoundBorder(left,Bottom);
                        private Border leftBoth = new CompoundBorder(left,Both);
                        private Border rightOpen = new CompoundBorder(right,Open);
                        private Border rightTop = new CompoundBorder(right,Top);
                        private Border rightBottom = new CompoundBorder(right,Bottom);
                        private Border rightBoth = new CompoundBorder(right,Both);
                      @Override
                      public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
                          Component comp = super.prepareRenderer(renderer, row, column);
                          JComponent jc = (JComponent) comp;
                          comp.setBackground(row % 2 == 0 ? getBackground() : Color.pink);
                          if (!isRowSelected(row)) {
                              int modelRow = convertRowIndexToModel(row);
                              String type = (String) getModel().getValueAt(modelRow, column);
                              comp.setForeground(Color.black);
                              if (type.equals("SomeString")) {
                                  comp.setBackground(Color.orange);
                              } else if (type.equals("SomeString")) {
                                  comp.setBackground(Color.red);
                              } else {
                                  comp.setBackground(row % 2 == 0 ? getBackground() : Color.pink);
                              jc.setBorder(BorderFactory.createEmptyBorder());
                              //centerTable.convertRowIndexToView(0);
                          } else {
                              int[] selectedRows = getSelectedRows();
                                  boolean top = true;
                                  boolean bottom = true;
                                  if (contains(selectedRows, row-1))
                                       top = false;
                                  if (contains(selectedRows, row+1))
                                       bottom = false;
                                  if (column == 0)
                                       if (top && bottom)
                                            jc.setBorder(leftBoth);
                                       } else if (top) {
                                            jc.setBorder(leftTop);
                                       } else if (bottom) {
                                            jc.setBorder(leftBottom);
                                       } else {
                                            jc.setBorder(leftOpen);
                                  else if (column == getColumnCount()-1)
                                       if (top && bottom)
                                            jc.setBorder(rightBoth);
                                       } else if (top) {
                                            jc.setBorder(rightTop);
                                       } else if (bottom) {
                                            jc.setBorder(rightBottom);
                                       } else {
                                            jc.setBorder(rightOpen);
                                  else
                                       if (top && bottom)
                                            jc.setBorder(Both);
                                       } else if (top) {
                                            jc.setBorder(Top);
                                       } else if (bottom) {
                                            jc.setBorder(Bottom);
                                       } else {
                                            jc.setBorder(Open);
                          return comp;
                      private boolean contains(int[] selectedRows, int i)
                             for (int selected : selectedRows)
                                  if (selected == i)
                                       return true;
                             return false;
                    table.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
                frame.getContentPane().add(table,
                        BorderLayout.PAGE_START);
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
}