private static void drawSelection(JTable table, int column, Graphics g, final int width) {
int y = 0;
final int[] rows = table.getSelectedRows();
final int height = table.getRowHeight();
for (int row : rows) {
final TableCellRenderer renderer = table.getCellRenderer(row, column);
final Component component =
renderer.getTableCellRendererComponent(
table, table.getValueAt(row, column), false, false, row, column);
g.translate(0, y);
component.setBounds(0, 0, width, height);
boolean wasOpaque = false;
if (component instanceof JComponent) {
final JComponent j = (JComponent) component;
if (j.isOpaque()) wasOpaque = true;
j.setOpaque(false);
}
component.paint(g);
if (wasOpaque) {
((JComponent) component).setOpaque(true);
}
y += height;
g.translate(0, -y);
}
}
// This method from http://www.exampledepot.com/egs/javax.swing.table/PackCol.html
public int packColumn(JTable table, int vColIndex, int margin) {
DefaultTableColumnModel colModel = (DefaultTableColumnModel) table.getColumnModel();
TableColumn col = colModel.getColumn(vColIndex);
int width = 0;
// Get width of column header
TableCellRenderer renderer = col.getHeaderRenderer();
if (renderer == null) {
renderer = table.getTableHeader().getDefaultRenderer();
}
Component comp =
renderer.getTableCellRendererComponent(table, col.getHeaderValue(), false, false, 0, 0);
width = comp.getPreferredSize().width;
// Get maximum width of column data
for (int r = 0; r < table.getRowCount(); r++) {
renderer = table.getCellRenderer(r, vColIndex);
comp =
renderer.getTableCellRendererComponent(
table, table.getValueAt(r, vColIndex), false, false, r, vColIndex);
width = Math.max(width, comp.getPreferredSize().width);
}
// Add margin
width += 2 * margin;
// Set the width
col.setPreferredWidth(width);
return width;
}
/**
* This method gets the width of a cell, specified by a column and row number.
*
* @param row The column number.
* @param column The row number.
* @return The width of the cell data.
*/
private int getCellDataWidth(int row, int column) {
// Inovke the renderer for the cell to calculate the preferred width
TableCellRenderer cellRenderer = table.getCellRenderer(row, column);
Component c = table.prepareRenderer(cellRenderer, row, column);
int width = c.getPreferredSize().width + table.getIntercellSpacing().width;
return width;
}
private int getColumnCellWidth(JTable table, int colIndex) {
int width = 0;
for (int r = 0; r < table.getRowCount(); r++) {
TableCellRenderer renderer = table.getCellRenderer(r, colIndex);
Component comp =
renderer.getTableCellRendererComponent(
table, table.getValueAt(r, colIndex), false, false, r, colIndex);
width = Math.max(width, comp.getPreferredSize().width);
}
return width;
}