java 特定行和列的自定义单元格渲染器
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custom cell renderer for particular row and column
提问by mr.nothing
puuuuuuf, I'm starting to like swing :) I'm trying to write a cellRenderer to customy render all cells besides those which in first row and column. So I wrote the following:
puuuuuuf，我开始喜欢swing :) 我正在尝试编写一个cellRenderer 来自定义渲染除第一行和第一列中的单元格之外的所有单元格。所以我写了以下内容：
public class CustomTableCellRenderer extends DefaultTableCellRenderer {
public Component getTableCellRendererComponent(JTable table, Object obj, boolean isSelected, boolean hasFocus, int row, int column) {
Component cell = super.getTableCellRendererComponent(table, obj, isSelected, hasFocus, row, column);
if(row >0&&column>0){
cell.setBackground(Color.GREEN);
}
return cell;
}
}
and set the renderer as following:
并将渲染器设置如下：
scheduleTable.setDefaultRenderer(Object.class, new CustomTableCellRenderer());
but for some reason such an approach applies renderer to all the cell. So all of them are Green. If I'm doing something wrong, could you help me with that please?
但出于某种原因，这种方法将渲染器应用于所有单元格。所以他们都是绿色的。如果我做错了什么，你能帮我吗？
Thanks in advance!
提前致谢！
ADDITION
添加
scheduleTable = new JTable() {
@Override
public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
Component comp = super.prepareRenderer(renderer, row, column);
int modelRow = convertRowIndexToModel(row);
int modelColumn = convertColumnIndexToModel(column);
if (modelColumn != 0 && modelRow != 0) {
comp.setBackground(Color.GREEN);
}
return comp;
}
};
this code makes all the table green as well.
这段代码也使所有表格都变绿了。
This code:
这段代码：
scheduleTable = new JTable(tableModel) {
@Override
public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
Component comp = super.prepareRenderer(renderer, row, column);
int modelRow = convertRowIndexToModel(row);
int modelColumn = convertColumnIndexToModel(column);
if (modelRow != 0 && modelColumn != 0) {
setBackground(Color.GREEN);
} else {
setBackground(Color.WHITE);
}
return comp;
}
};
gives me the following result ;(
给我以下结果;(
The following situations I have with differents nin expression row != 0 && column != 0:
以下情况我有不同n的表达row != 0 && column != 0：
回答by mKorbel
you can use prepareRenderer, is easiest and more confortable that
XxxCellRenderergreat code example is Table Row Renderingby @camickr
您可以使用prepareRenderer，这是最简单和更舒适的
XxxCellRenderer很棒的代码示例是@camickr 的Table Row Rendering
EDIT:
编辑：
if (modelColumn != 0 || modelRow != 0) {
and with if (modelColumn != 0 && modelRow != 0) {
与 if (modelColumn != 0 && modelRow != 0) {
from code
从代码
import java.awt.*;
import java.awt.font.TextAttribute;
import java.util.Map;
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.*;
public class TablePrepareRenderer extends JFrame {
private static final long serialVersionUID = 1L;
private JTable table;
public TablePrepareRenderer() {
Object[] columnNames = {"Type", "Company", "Shares", "Price", "Boolean"};
Object[][] data = {
{"Buy", "IBM", new Integer(1000), new Double(80.50), false},
{"Sell", "MicroSoft", new Integer(2000), new Double(6.25), true},
{"Sell", "Apple", new Integer(3000), new Double(7.35), true},
{"Buy", "Nortel", new Integer(4000), new Double(20.00), false}
};
DefaultTableModel model = new DefaultTableModel(data, columnNames) {
private static final long serialVersionUID = 1L;
@Override
public Class getColumnClass(int column) {
return getValueAt(0, column).getClass();
}
};
table = new JTable(model) {
private static final long serialVersionUID = 1L;
private Border outside = new MatteBorder(1, 0, 1, 0, Color.red);
private Border inside = new EmptyBorder(0, 1, 0, 1);
private Border highlight = new CompoundBorder(outside, inside);
@Override
public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
int modelRow = convertRowIndexToModel(row);
int modelColumn = convertColumnIndexToModel(column);
if (!isRowSelected(modelRow)) {
if (modelColumn != 0 || modelRow != 0) {
comp.setBackground(Color.GREEN);
} else {
comp.setBackground(table.getBackground());
}
}
return comp;
/*Component comp = super.prepareRenderer(renderer, row, column);
JComponent jc = (JComponent) comp;
Map attributes = (new Font("Serif", Font.PLAIN, 12)).getAttributes();
//attributes.put(TextAttribute.WEIGHT, TextAttribute.WEIGHT_BOLD);
attributes.put(TextAttribute.STRIKETHROUGH, TextAttribute.STRIKETHROUGH_ON);
if (!isRowSelected(row)) {
comp.setForeground(Color.black);
comp.setBackground(row % 2 == 0 ? Color.white : Color.orange);
int modelRow = convertRowIndexToModel(row);
String type = (String) getModel().getValueAt(modelRow, 0);
if (type.equals("Sell")) {
comp.setFont(new Font(attributes));
comp.setForeground(Color.red);
} else {
comp.setFont(new Font("Serif", Font.BOLD, 12));
}
} else {
comp.setFont(table.getFont());
}
jc.setBorder(BorderFactory.createCompoundBorder(jc.getBorder(), BorderFactory.createEmptyBorder(0, 0, 0, 5)));
return comp;*/
}
};
table.setPreferredScrollableViewportSize(table.getPreferredSize());
JScrollPane scrollPane = new JScrollPane(table);
getContentPane().add(scrollPane);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
TablePrepareRenderer frame = new TablePrepareRenderer();
frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
}
回答by Deb
Use the row and column value without converting into model
使用行和列值而不转换为模型
