[英]How to still view Cell color of selected row in a JTable?
Lets say a JTable has rows with various cell colors like this.假设一个 JTable 具有像这样的各种单元格颜色的行。
If the first 2 rows are highlighted, it looks like the following and now the colors seen for the first two rows are lost.如果前 2 行突出显示,则如下所示,现在前两行看到的颜色丢失了。
Is it possible to make the highlighted rows more transparent so that the underlying colors are still visible?是否可以使突出显示的行更加透明,以便底层颜色仍然可见? Something similar to what Excel does.
类似于 Excel 所做的事情。 Notice the same 2 rows are highlighted and yet the colors are still visible while its still obvious the rows are highlighted/selected.
请注意,相同的 2 行被突出显示,但颜色仍然可见,而行被突出显示/选择仍然很明显。
Here is a modified sample I pulled from the Java2 page and modified it for the above example.这是我从 Java2 页面中提取的修改后的示例,并针对上述示例进行了修改。
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellRenderer;
class EvenOddRenderer implements TableCellRenderer
{
public static final DefaultTableCellRenderer DEFAULT_RENDERER = new DefaultTableCellRenderer();
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column)
{
Component renderer = DEFAULT_RENDERER.getTableCellRendererComponent(table, value,
isSelected, hasFocus, row, column);
Color foreground = Color.red, background = Color.WHITE;
if (column == 1 && row == 0)
{
background = Color.GREEN;
}
else if (column == 1 && row == 1)
{
background = Color.CYAN;
}
else if (column == 1 && row == 2)
{
background = Color.ORANGE;
}
else if (column == 2)
{
background = Color.YELLOW;
}
if (isSelected)
background = Color.LIGHT_GRAY;
renderer.setForeground(foreground);
renderer.setBackground(background);
return renderer;
}
}
public class CellColorTransparency {
public static void main(String args[]) {
final Object rowData[][] = {
{ "1", "one", "I" },
{ "2", "two", "II" },
{ "3", "three", "III" }};
final String columnNames[] = { "#", "English", "Roman" };
final JTable table = new JTable(rowData, columnNames);
JScrollPane scrollPane = new JScrollPane(table);
table.setDefaultRenderer(Object.class,new EvenOddRenderer());
JFrame frame = new JFrame("Color Test Table");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(scrollPane, BorderLayout.CENTER);
frame.setSize(300, 150);
frame.setVisible(true);
}
}
It was actually easier than expected.这实际上比预期的要容易。
Simply use the darker() call within the Renderer.只需在渲染器中使用 darker() 调用。
if (isSelected)
background = background.darker();//Color.LIGHT_GRAY;
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