/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.swing.table;
import sun.swing.DefaultLookup;
import java.awt.Component;
import java.awt.Color;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.Point;
import java.awt.Rectangle;
import java.io.Serializable;
import javax.swing.*;
import javax.swing.plaf.UIResource;
import javax.swing.border.Border;
import javax.swing.table.*;
public class DefaultTableCellHeaderRenderer extends DefaultTableCellRenderer
implements UIResource {
private boolean horizontalTextPositionSet;
private Icon sortArrow;
private EmptyIcon emptyIcon = new EmptyIcon();
public DefaultTableCellHeaderRenderer() {
setHorizontalAlignment(JLabel.CENTER);
}
public void setHorizontalTextPosition(int textPosition) {
horizontalTextPositionSet = true;
super.setHorizontalTextPosition(textPosition);
}
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
Icon sortIcon = null;
boolean isPaintingForPrint = false;
if (table != null) {
JTableHeader header = table.getTableHeader();
if (header != null) {
Color fgColor = null;
Color bgColor = null;
if (hasFocus) {
fgColor = DefaultLookup.getColor(this, ui, "TableHeader.focusCellForeground");
bgColor = DefaultLookup.getColor(this, ui, "TableHeader.focusCellBackground");
}
if (fgColor == null) {
fgColor = header.getForeground();
}
if (bgColor == null) {
bgColor = header.getBackground();
}
setForeground(fgColor);
setBackground(bgColor);
setFont(header.getFont());
isPaintingForPrint = header.isPaintingForPrint();
}
if (!isPaintingForPrint && table.getRowSorter() != null) {
if (!horizontalTextPositionSet) {
// There is a row sorter, and the developer hasn't
// set a text position, change to leading.
setHorizontalTextPosition(JLabel.LEADING);
}
SortOrder sortOrder = getColumnSortOrder(table, column);
if (sortOrder != null) {
switch(sortOrder) {
case ASCENDING:
sortIcon = DefaultLookup.getIcon(
this, ui, "Table.ascendingSortIcon");
break;
case DESCENDING:
sortIcon = DefaultLookup.getIcon(
this, ui, "Table.descendingSortIcon");
break;
case UNSORTED:
sortIcon = DefaultLookup.getIcon(
this, ui, "Table.naturalSortIcon");
break;
}
}
}
}
setText(value == null ? "" : value.toString());
setIcon(sortIcon);
sortArrow = sortIcon;
Border border = null;
if (hasFocus) {
border = DefaultLookup.getBorder(this, ui, "TableHeader.focusCellBorder");
}
if (border == null) {
border = DefaultLookup.getBorder(this, ui, "TableHeader.cellBorder");
}
setBorder(border);
return this;
}
public static SortOrder getColumnSortOrder(JTable table, int column) {
SortOrder rv = null;
if (table.getRowSorter() == null) {
return rv;
}
java.util.List<? extends RowSorter.SortKey> sortKeys =
table.getRowSorter().getSortKeys();
if (sortKeys.size() > 0 && sortKeys.get(0).getColumn() ==
table.convertColumnIndexToModel(column)) {
rv = sortKeys.get(0).getSortOrder();
}
return rv;
}
@Override
public void paintComponent(Graphics g) {
boolean b = DefaultLookup.getBoolean(this, ui,
"TableHeader.rightAlignSortArrow", false);
if (b && sortArrow != null) {
//emptyIcon is used so that if the text in the header is right
//aligned, or if the column is too narrow, then the text will
//be sized appropriately to make room for the icon that is about
//to be painted manually here.
emptyIcon.width = sortArrow.getIconWidth();
emptyIcon.height = sortArrow.getIconHeight();
setIcon(emptyIcon);
super.paintComponent(g);
Point position = computeIconPosition(g);
sortArrow.paintIcon(this, g, position.x, position.y);
} else {
super.paintComponent(g);
}
}
private Point computeIconPosition(Graphics g) {
FontMetrics fontMetrics = g.getFontMetrics();
Rectangle viewR = new Rectangle();
Rectangle textR = new Rectangle();
Rectangle iconR = new Rectangle();
Insets i = getInsets();
viewR.x = i.left;
viewR.y = i.top;
viewR.width = getWidth() - (i.left + i.right);
viewR.height = getHeight() - (i.top + i.bottom);
SwingUtilities.layoutCompoundLabel(
this,
fontMetrics,
getText(),
sortArrow,
getVerticalAlignment(),
getHorizontalAlignment(),
getVerticalTextPosition(),
getHorizontalTextPosition(),
viewR,
iconR,
textR,
getIconTextGap());
int x = getWidth() - i.right - sortArrow.getIconWidth();
int y = iconR.y;
return new Point(x, y);
}
private class EmptyIcon implements Icon, Serializable {
int width = 0;
int height = 0;
public void paintIcon(Component c, Graphics g, int x, int y) {}
public int getIconWidth() { return width; }
public int getIconHeight() { return height; }
}
}