// 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;
}
public void
setColumnWidths() { // See
// "http://java.sun.com/docs/books/tutorial/uiswing/components/table.html#custom"
int n = getModel().getColumnCount();
for (int j = 0; j < n; ++j) {
TableColumn column = getColumnModel().getColumn(j);
TableCellRenderer headerRenderer = column.getHeaderRenderer();
if (headerRenderer == null)
headerRenderer = getTableHeader().getDefaultRenderer(); // the new 1.3 way
Component columnComponent =
headerRenderer.getTableCellRendererComponent(
this, column.getHeaderValue(), false, false, -1, j);
Component cellComponent =
getDefaultRenderer(getColumnClass(j))
.getTableCellRendererComponent(this, getModel().getValueAt(0, j), false, false, 0, j);
int wantWidth =
Math.max(
columnComponent.getPreferredSize().width
+ 10, // fudge factor ... seems to always be too small otherwise (on x86 Linux)
cellComponent.getPreferredSize().width
+ 10 // fudge factor ... seems to always be too small otherwise (on Mac OS X)
);
column.setPreferredWidth(wantWidth);
}
}
private int getHeaderHeight() {
if ((header == null) || (header.getTable() == null)) {
return 0;
}
int height = 0;
boolean accomodatedDefault = false;
TableColumnModel columnModel = header.getColumnModel();
for (int column = 0; column < columnModel.getColumnCount(); column++) {
TableColumn aColumn = columnModel.getColumn(column);
boolean isDefault = (aColumn.getHeaderRenderer() == null);
if (!isDefault || !accomodatedDefault) {
Component comp = getHeaderRenderer(column);
int rendererHeight = comp.getPreferredSize().height;
height = Math.max(height, rendererHeight);
// Configuring the header renderer to calculate its preferred size
// is expensive. Optimise this by assuming the default renderer
// always has the same height as the first non-zero height that
// it returns for a non-null/non-empty value.
if (isDefault && rendererHeight > 0) {
Object headerValue = aColumn.getHeaderValue();
if (headerValue != null) {
headerValue = headerValue.toString();
if (headerValue != null && !headerValue.equals("")) {
accomodatedDefault = true;
}
}
}
}
}
return height + 2;
}
@Override
public int getRowHeight() {
if (myRowHeightIsComputing) {
return super.getRowHeight();
}
if (myRowHeight < 0) {
try {
myRowHeightIsComputing = true;
for (int row = 0; row < getRowCount(); row++) {
for (int column = 0; column < getColumnCount(); column++) {
final TableCellRenderer renderer = getCellRenderer(row, column);
if (renderer != null) {
final Object value = getValueAt(row, column);
final Component component =
renderer.getTableCellRendererComponent(this, value, true, true, row, column);
if (component != null) {
final Dimension size = component.getPreferredSize();
myRowHeight = Math.max(size.height, myRowHeight);
}
}
}
}
} finally {
myRowHeightIsComputing = false;
}
}
if (myMinRowHeight == null) {
myMinRowHeight = getFontMetrics(UIManager.getFont("Label.font")).getHeight();
}
return Math.max(myRowHeight, myMinRowHeight);
}
private int calcMaxContentColumnWidth(int columnIndex, int maxRowsToCheck) {
int maxWidth = 0;
for (int row = 0; row < maxRowsToCheck && row < getRowCount(); row++) {
TableCellRenderer renderer = getCellRenderer(row, columnIndex);
Component comp = prepareRenderer(renderer, row, columnIndex);
maxWidth = Math.max(comp.getPreferredSize().width, maxWidth);
}
return maxWidth + UIUtil.DEFAULT_HGAP;
}
/**
* 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;
}
/*
* Calculated the width based on the column name
*/
private int getColumnHeaderWidth(int column) {
if (!isColumnHeaderIncluded) return 0;
TableColumn tableColumn = table.getColumnModel().getColumn(column);
Object value = tableColumn.getHeaderValue();
TableCellRenderer renderer = tableColumn.getHeaderRenderer();
if (renderer == null) {
renderer = table.getTableHeader().getDefaultRenderer();
}
Component c = renderer.getTableCellRendererComponent(table, value, false, false, -1, column);
return c.getPreferredSize().width;
}
public void updateColumnSizes() {
final JTableHeader header = getTableHeader();
final TableCellRenderer defaultRenderer = header == null ? null : header.getDefaultRenderer();
final RowSorter<? extends TableModel> sorter = getRowSorter();
final List<? extends RowSorter.SortKey> current = sorter == null ? null : sorter.getSortKeys();
ColumnInfo[] columns = getListTableModel().getColumnInfos();
for (int i = 0; i < columns.length; i++) {
final ColumnInfo columnInfo = columns[i];
final TableColumn column = getColumnModel().getColumn(i);
// hack to get sort arrow included into the renderer component
if (sorter != null && columnInfo.isSortable()) {
sorter.setSortKeys(
Collections.singletonList(new RowSorter.SortKey(i, SortOrder.ASCENDING)));
}
final Component headerComponent =
defaultRenderer == null
? null
: defaultRenderer.getTableCellRendererComponent(
this, column.getHeaderValue(), false, false, 0, 0);
if (sorter != null && columnInfo.isSortable()) {
sorter.setSortKeys(current);
}
final Dimension headerSize =
headerComponent == null ? new Dimension(0, 0) : headerComponent.getPreferredSize();
final String maxStringValue;
final String preferredValue;
if (columnInfo.getWidth(this) > 0) {
int width = columnInfo.getWidth(this);
column.setMaxWidth(width);
column.setPreferredWidth(width);
column.setMinWidth(width);
} else if ((maxStringValue = columnInfo.getMaxStringValue()) != null) {
int width =
getFontMetrics(getFont()).stringWidth(maxStringValue) + columnInfo.getAdditionalWidth();
width = Math.max(width, headerSize.width);
column.setPreferredWidth(width);
column.setMaxWidth(width);
} else if ((preferredValue = columnInfo.getPreferredStringValue()) != null) {
int width =
getFontMetrics(getFont()).stringWidth(preferredValue) + columnInfo.getAdditionalWidth();
width = Math.max(width, headerSize.width);
column.setPreferredWidth(width);
}
}
}
/**
* Get the dimension of this ColumnGroup.
*
* @param table the table the header is being rendered in
* @return the dimension of the ColumnGroup
*/
public Dimension getSize(JTable table) {
Component comp =
renderer.getTableCellRendererComponent(table, getHeaderValue(), false, false, -1, -1);
int height = comp.getPreferredSize().height;
int width = 0;
Iterator iter = v.iterator();
while (iter.hasNext()) {
Object obj = iter.next();
if (obj instanceof TableColumn) {
TableColumn aColumn = (TableColumn) obj;
width += aColumn.getWidth();
} else {
width += ((ColumnGroup) obj).getSize(table).width;
}
}
return new Dimension(width, height);
}
public void updateColumnSizes() {
final JTableHeader header = getTableHeader();
final TableCellRenderer defaultRenderer = header == null ? null : header.getDefaultRenderer();
ColumnInfo[] columns = getListTableModel().getColumnInfos();
for (int i = 0; i < columns.length; i++) {
final ColumnInfo columnInfo = columns[i];
final TableColumn column = getColumnModel().getColumn(i);
final Component headerComponent =
defaultRenderer == null
? null
: defaultRenderer.getTableCellRendererComponent(
this, column.getHeaderValue(), false, false, 0, 0);
final Dimension headerSize =
headerComponent == null ? new Dimension(0, 0) : headerComponent.getPreferredSize();
final String maxStringValue;
final String preferredValue;
if (columnInfo.getWidth(this) > 0) {
int width = columnInfo.getWidth(this);
column.setMaxWidth(width);
column.setPreferredWidth(width);
column.setMinWidth(width);
} else if ((maxStringValue = columnInfo.getMaxStringValue()) != null) {
int width =
getFontMetrics(getFont()).stringWidth(maxStringValue) + columnInfo.getAdditionalWidth();
width = Math.max(width, headerSize.width);
column.setPreferredWidth(width);
column.setMaxWidth(width);
} else if ((preferredValue = columnInfo.getPreferredStringValue()) != null) {
int width =
getFontMetrics(getFont()).stringWidth(preferredValue) + columnInfo.getAdditionalWidth();
width = Math.max(width, headerSize.width);
column.setPreferredWidth(width);
}
}
}
public void updateColumnSizes() {
final JTableHeader header = getTableHeader();
final TableCellRenderer defaultRenderer = header == null ? null : header.getDefaultRenderer();
final RowSorter<? extends TableModel> sorter = getRowSorter();
final List<? extends RowSorter.SortKey> current = sorter == null ? null : sorter.getSortKeys();
ColumnInfo[] columns = getListTableModel().getColumnInfos();
int[] sizeMode = new int[columns.length];
int[] headers = new int[columns.length];
int[] widths = new int[columns.length];
int allColumnWidth = 0;
int varCount = 0;
// calculate
for (int i = 0; i < columns.length; i++) {
final ColumnInfo columnInfo = columns[i];
final TableColumn column = getColumnModel().getColumn(i);
// hack to get sort arrow included into the renderer component
if (sorter != null && columnInfo.isSortable()) {
sorter.setSortKeys(
Collections.singletonList(new RowSorter.SortKey(i, SortOrder.ASCENDING)));
}
final Component headerComponent =
defaultRenderer == null
? null
: defaultRenderer.getTableCellRendererComponent(
this, column.getHeaderValue(), false, false, 0, 0);
if (sorter != null && columnInfo.isSortable()) {
sorter.setSortKeys(current);
}
if (headerComponent != null) {
headers[i] = headerComponent.getPreferredSize().width;
}
final String maxStringValue;
final String preferredValue;
if (columnInfo.getWidth(this) > 0) {
sizeMode[i] = 1;
int width = columnInfo.getWidth(this);
widths[i] = width;
} else if ((maxStringValue = columnInfo.getMaxStringValue()) != null) {
sizeMode[i] = 2;
widths[i] =
getFontMetrics(getFont()).stringWidth(maxStringValue) + columnInfo.getAdditionalWidth();
varCount++;
} else if ((preferredValue = columnInfo.getPreferredStringValue()) != null) {
sizeMode[i] = 3;
widths[i] =
getFontMetrics(getFont()).stringWidth(preferredValue) + columnInfo.getAdditionalWidth();
varCount++;
}
allColumnWidth += widths[i];
}
// apply: distribute available space between resizable columns
// and make sure that header will fit as well
int viewWidth = getParent() != null ? getParent().getWidth() : getWidth();
double gold = 0.5 * (3 - Math.sqrt(5));
int addendum =
varCount == 0 || viewWidth < allColumnWidth
? 0
: (int)
((allColumnWidth < gold * viewWidth
? gold * viewWidth
: allColumnWidth < (1 - gold) * viewWidth
? (1 - gold) * viewWidth
: viewWidth)
- allColumnWidth)
/ varCount;
for (int i = 0; i < columns.length; i++) {
TableColumn column = getColumnModel().getColumn(i);
int width = widths[i];
if (sizeMode[i] == 1) {
column.setMaxWidth(width);
column.setPreferredWidth(width);
column.setMinWidth(width);
} else if (sizeMode[i] == 2) {
width = Math.max(width + addendum, headers[i]);
column.setPreferredWidth(width);
column.setMaxWidth(width);
} else if (sizeMode[i] == 3) {
width = Math.max(width + addendum, headers[i]);
column.setPreferredWidth(width);
}
}
}