如何根据单元格中的值来对JTable的单个单元格进行着色？ [英] How do I color individual cells of a JTable based on the value in the cell?
本文介绍了如何根据单元格中的值来对JTable的单个单元格进行着色？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我试图做一个俄罗斯方块克隆。游戏使用 JTable 作为棋盘的表示。该板是一个2D整数数组。
我试图使它这样，当某个单元格有一定的值时，单元格会变成某种颜色。我以为我的工作正常，但它不工作。
这是我的代码：
董事会：
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import javax.swing.Timer;
import javax.swing.table。*;
/ **
* @author _______________
*
* Board.java
*
* Board类向InitializeJTable类提供有关$ b的信息$ b * JTable元素的数据类型，JTable中有多少行/列等;
*
*我使用AbstractTableModel扩展Board，这个类允许我在JTable的元素中显示任何数据类型
*。
*
*此类还具有AbstractTableModel所需的方法声明，这些方法是：
* - getRowCount（）
* - getColumnCount（）
* getValueAt（int，int）
*
* /
@SuppressWarnings（serial）
public class Board extends AbstractTableModel {
TableColorSetter TCS;
boolean lost = false;
InitializeGUI iGUI;
InitializeJTable iJT;
public int SPEED = 1000;
L l = new L（）;
public Block currentBlock = l;
public int [] [] boxes; //定义Tetris板的状态的二维布尔数组。用于InitializeJTable和InitializePreviewJTable
/ *
* boardType是一个与构造函数一起使用的整数。
*
*如果boardType等于0，构造函数生成一个22x10的数组（这与主板一起使用）
*然而，如果boardType等于1，构造函数生成一个4x4阵列（这与预览/保持板，一个较小的板一起使用）
* /
public Board（int boardType）{
if （boardType == 0）{
boxes = new int [22] [10];
loop（）;
} else if（boardType == 1）boxes = new int [4] [4];
}
/ *
* getRowCount（）
*
* getRowCount是AbstractTableModel类的必需声明。
* @返回框中的行数boolean
* /
@Override
public int getRowCount（）{
return boxes.length;
}
public int getTetrisType（Block block）{
return block.getTetrisType（）;
}
public void letPieceDown（int origA，int origB，int tetrisType）{
boxes [origA] [origB] = 0;
boxes [origA + 1] [origB] = tetrisType;
}
/ *
* getColumnCount（）
*
* getColumnCount（）是AbstractTableModel类的必需声明。
* @返回框中的列数boolean
* /
@Override
public int getColumnCount（）{
return boxes [0] .length;
}
@Override
public void setValueAt（Object aValue，int rowIndex，int columnIndex）{
boxes [rowIndex] [columnIndex] =（int）aValue;
fireTableCellUpdated（rowIndex，columnIndex）;
}
/ *
* getValueAt（）
*
* getValueAt（）是AbstractTableModel类的必需声明。
*返回框中的列数boolean
*
* @param int rowIndex要返回的布尔值的行索引。
* int columnIndex要返回的布尔值的列索引。
*
* @返回布尔数组中指定位置的布尔值。
* /
@Override
public Object getValueAt（int rowIndex，int columnIndex）{
return boxes [rowIndex] [columnIndex];
}
public int getVal（int row，int col）{
return boxes [row] [col];
}
/ **
*
* loop（）;
*
* loop（）方法是一个非常粗略的草稿，关于放置Tetris对象在板上，让他们移动，并堆叠。
*
* TODO：
* /
public void loop（）{
定时器计时器= new
Timer（SPEED，new ActionListener（）{
int x = 0;
int y = 0;
@Override
public void actionPerformed（ActionEvent e）{
while（lost = false）{
for（int a = 0; a< getColumnCount（）; a ++）{
for（int b = 0; b
}
}
}
（x == getRowCount（） - 1）{
x = 0;
} else if（boxes [x + 1] [y]！= 0&& x == 0）{
boxes [x] [y] = getTetrisType（currentBlock）;
fireTableDataChanged（）;
//System.out.println(\"GAME OVER！）;
// y ++; //只是用于测试。
PlaySound sound = new PlaySound（）;
sound.setSoundType（1）;
sound.start（）;
（（Timer）e.getSource（））。stop（）;
} else if（boxes [x + 1] [y]！= 0）{
x = 0;
} else {
//System.out.println(\"Pos：+ x +，0行计数：+ getRowCount（）+ - + x）;
letPieceDown（x，y，getTetrisType（currentBlock））;
fireTableDataChanged（）;
x ++;
}
}
}）;
timer.start（）;
}
}
InitializeJTable： / p>
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumnModel;
import java.awt.Color;
import java.awt.Component;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTable;
/ **
* @author _________________
*
* InitializeJTable.java
*
* InitializeJTable类将JTable设置为看起来像一个俄罗斯方块。
*
* @TODO：添加更多评论
* /
@SuppressWarnings（serial）
public class InitializeJTable extends JPanel {
private int COLS = 10;
private int HEIGHT = 30;
颜色white = Color.WHITE;
颜色黑色= Color.BLACK;
Board tetrisBoard;
JTable table;
public Board returnBoard（）{
return tetrisBoard;
}
public JTable getTable（）{
return table;
}
public InitializeJTable（）{// InitializeJTable构造函数
tetrisBoard = new Board（0）; //创建一个22x10布尔值的新电路板，boardType为0.
table = new JTable（tetrisBoard）; //将Board构造函数的信息应用到JTable。 （信息，例如，JTable中有多少行/列，JTable元素的数据类型等）
// setLayout（new GridBagLayout（））; //将JTable的布局设置为GridBagLayout。这意味着，它使JTable看起来像一个网格。
table.setCellSelectionEnabled（false）; //禁用用鼠标拖动/选择JTable上的列。我们不会需要的。
TableColumnModel columns = table.getColumnModel（）; //获取有关JTable的列的信息。我需要这个设置列的长度（使它们是正方形）
table.setRowHeight（HEIGHT）; //将JTable行的高度设置为HEIGHT int，当前设置为30.可以轻松更改。
//table.setForeground(white）; //使用此选项使所有块为白色。仍然需要使其正常工作。
/ *
*很遗憾，JTable API中没有 - table.setColumnHeight（int） - 方法。 （将列的长度设置为指定的整数）
*
*所以我必须手动设置每列的宽度。这就是为什么我声明了TableColumnModel在
* /
上面的原因（int a = 0; a< COLS; a ++）{
columns.getColumn（a）.setPreferredWidth（HEIGHT）; //将JTable列的高度设置为HEIGHT int，当前设置为30.可以轻松更改。
}
add（table）; //表的所有设置正确，添加它。
}
}
解决方案
数据/模型与视图/表之间存在关系。该模型维护什么，视图控制如何。
JTable 你可以通过使用 TableCellRenderers 来实现如何的行为（东西被渲染），这些行为负责确定如何根据值来绘制单元格从模型中的what开始。
现在，此示例使用 double 值来确定从 1 单元格值的距离，它表示单元格应该被绘制的颜色（黑色= 0;白色= 1）。要实现这一点，它使用自定义 TableCellRenderer ，它将模型中的值（what）转换为颜色（或如何）
public class PaintTableCellRenderer extends DefaultTableCellRenderer {
@Override
public Component getTableCellRendererComponent（JTable table，Object value，boolean isSelected，boolean hasFocus，int row，int column）{
super.getTableCellRendererComponent（table，，isSelected，hasFocus，row，column）;
if（value instanceof Double）{
double distance =（double）value;
int part =（int）（255 * distance）;
颜色color =新颜色（part，part，part）;
setBackground（color）;
} else {
setBackground（Color.WHITE）;
}
return this;
}
}
它还演示了您可能需要了解的几个其他事情 JTable 。
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.util.Enumeration;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableColumn;
public class Smile {
public static void main（String [] args）{
new Smile（）;
}
public Smile（）{
EventQueue.invokeLater（new Runnable（）{
@Override
public void run（）{
try {
UIManager.setLookAndFeel（UIManager.getSystemLookAndFeelClassName（））;
} catch（ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex）{
ex.printStackTrace（）;
}
JFrame frame = new JFrame（Testing）;
frame.setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）;
frame.add（new TestPane（））;
frame.pack（）;
frame.setLocationRelativeTo（null）;
frame.setVisible（true）;
}
}）;
}
public class TestPane extends JPanel {
private double [] [] smily = {
{1,1,1,1,1 ，0.996,1,0.843,0.784,0.788,0.773,0.776,0.765,0.765,0.788,0.784,0.847,1,0.996,1,1,1,1.0996}，
{1,1,1 ，1,1,0.87,0.733,0.761,0.847,0.941,0.941,0.941,0.941,0.941,0.933,0.843,0.761,0.733,0.871,1,1,1,1,1}，
{1} ，1,1,1,0.784,0.733,0.902,0.941,0.941,0.941,0.94,0.941,0.941,0.941,0.941,0.941,0.941,0.898,0.733,0.784,1,1,1,1}，
{1,1,1,0.765,0.773,0.945,0.945,0.941,0.929,0.94,0.941,0.941,0.94,0.941,0.959,0.91,0.941,0.941,0.941,0.78,0.761,1,1,1} }，
{1,1,0.808,0.773,0.941,0.941,0.94,0.941,0.294,0.44,0.941,0.941,0.941,0.941,0.702,0.299,0.886,0.941,0.945,0.941,0.78,0.8 ，1,1}，
{1,0.89,0.725,0.945,0.941,0.941,0.945,0.843,0,0.922,0.945,0.941,0.941,0.408,0.,0.663,0.941,0.941,0.945 ，0.941,0.725,0.89,1}，
（0.992,0.753,0.902,0.941,0.945,0.945,0.941,0.725,0.051,0,0.808,0.941,0.941,0.945,0.294,0.051,0.553,0.941 ，0.941,0.941,0.941,0.91,0.741,0.984}，
{0.871,0.78,0.941,0.941,0.945,0.945,0.941,0.694,0.951,0.804,0.94,0.94,0.941,0.278,0 ，0.518,0.941,0.941,0.945,0.941,0.941,0.78,0.878}，
{0.816,0.855,0.941,0.945,0.945,0.945,0.941,0.737,0.,0.051,0.82,0.941,0.941,0.941 ，0.302,0.051,0.565,0.941,0.949,0.945,0.941,0.941,0.863,0.804}，
{0.8,0.945,0.941,0.94,0.945,0.941,0.941,0.875,0,0,0.937,0.941 ，0.941,0.941,0.443,0,0.694,0.945,0.945,0.945,0.945,0.949,0.941,0.765}，
{0.769,0.941,0.945,0.959,0.961,0.941,0.945,0.941,0.443,0.565 ，0.945,0.941,0.941,0.941,0.769,0.388,0.918,0.941,0.941,0.941,0.945,0.941,0.941,0.78}，
{0.753,0.941,0.941,0.941,0.941,0.941,0.941,0.953 ，0.941,0.941,0.941,0.941,0.94,0.941,0.941,0.941,0.941,0.941,0.941,0.941,0.94,0.941,0.941,0.788}，
{0.741,0.945,0.839,0.427,0.624,0.941 ，0.941,0.945,0.941,0.941,0.941,0.949,0.94,0.945,0.941,0.941,0.941,0.941,0.941,0.6,0.376,0.941,0.945,0.784}，
{0.749,0.941,0.914,0.345 ，0.647,0.941,0.945,0.949,0.945,0.945,0.941,0.941,0.945,0.941,0.945,0.94,0.94,0.94,0.941,0.702,0.384,0.941,0.941,0.78}，
（0.796,0.945 ，0.941,0.627,0.592,0.941,0.941,0.941,0.945,0.94,0.94,0.94,0.949,0.94,0.94,0.945,0.94,0.937,0.945,0.58,0.631,0.941,0.937,0.776}，
{0.812,0.859,0.941,0.854,0.954,0.941,0.94,0.959,0.94,0.94,0.953,0.941,0.94,0.94,0.94,0.94,0.941,0.941,0.384,0.941,0.941,0.867,0.812}的组合物，其中所述组合物包含：
（0.871,0.788,0.941,0.941,0.533,0.51,0.94,0.94,0.94,0.945,0.94,0.94,0.94,0.94,0.94,0.937,0.94,0.945,0.522,0.522,0.941,0.941,0.792） ，0.886}，
（0.992,0.741,0.914,0.941,0.941,0.325,0.64,0.941,0.941,0.941,0.941,0.941,0.941,0.941,0.64,0.318,0.941,0.945 ，0.91,0.765,0.988}，
{1,0.982,0.741,0.941,0.941,0.922,0.333,0.44,0.94,0.941,0.941,0.941,0.941,0.941,0.945,0.894,0.49,0.325,0.925 ，0.941,0.941,0.753,0.894,1}，
（1,1.79,0.78,0.941,0.941,0.941,0.592,0.447,0.565,0.667,0.737,0.737,0.667,0.565,0.451,0.588 ，0.941,0.941,0.941,0.796,0.808,1,1}，
{1,1.996,0.753,0.788,0.941,0.941,0.941,0.941,0.702,0.584,0.557,0.553,0.592,0.688 ，0.906,0.941,0.945,0.941,0.796,0.769,0.996,1,1}，
{1,1,1,1,0.79,0.745,0.922,0.941,0.941,0.941,0.941,0.941,0.941 ，0.941,0.941,0.941,0.941,0.918,0.741,0.76,1,1,0.996,1}，
{1，0.996,1,1,1，0.851,0.733,0.773,0.867,0.945,0.941 ，0.941,0.941,0.941,0.945,0.867,0.769,0.725,0.851,1,1,1,1,1}，
{1,1,1,1,1,1,0.984,0.843,0.78 ，0.761,0.78,0.776,0.796,0.784,0.765,0.78,0.835,0.984,1,1,1,1,1,1}
};其中，
public TestPane（）{
AsciiTableModel model = new AsciiTableModel（）;
model.setData（smily）;
JTable table = new JTable（model）;
table.setRowHeight（24）;
枚举< TableColumn> columns = table.getColumnModel（）。getColumns（）;
while（columns.hasMoreElements（））{
TableColumn col = columns.nextElement（）;
col.setWidth（24）;
col.setPreferredWidth（24）;
col.setMinWidth（24）;
col.setMaxWidth（24）;
}
table.setRowHeight（24）;
table.setAutoResizeMode（JTable.AUTO_RESIZE_OFF）;
table.setDefaultRenderer（Object.class，new PaintTableCellRenderer（））;
setLayout（new BorderLayout（））;
add（new JScrollPane（table））;
}
@Override
public Dimension getPreferredSize（）{
return new Dimension（200，200）;
}
}
public class PaintTableCellRenderer extends DefaultTableCellRenderer {
@Override
public Component getTableCellRendererComponent（JTable table，Object value，boolean isSelected，boolean hasFocus，int row，int column）{
super.getTableCellRendererComponent（table，，isSelected，hasFocus，row，column）;
if（value instanceof Double）{
double distance =（double）value;
int part =（int）（255 * distance）;
颜色color =新颜色（part，part，part）;
setBackground（color）;
} else {
setBackground（Color.WHITE）;
}
return this;
}
}
public class AsciiTableModel extends AbstractTableModel {
private double [] [] data;
public AsciiTableModel（）{
data = new double [24] [24];
}
public void setData（double [] [] value）{
data = value;
fireTableDataChanged（）;
}
@Override
public int getRowCount（）{
return 24;
}
@Override
public int getColumnCount（）{
return 24;
}
@Override
public Object getValueAt（int rowIndex，int columnIndex）{
return data [rowIndex] [columnIndex];
}
}
}
<我想要提供一个悲伤的脸，你可以在之间切换，但我的女儿要我跟她油漆，对不起）
I am attempting to make a Tetris clone. The game uses a JTable as a representation of the board. The board is a 2D integer array.
I am trying to make it so, when a certain cell has a certain value, the cell will change to a certain color. I thought I had it working correctly, but it isn't working. I'd really appreciate some help.
Thank you.
Here is my code:
Board:
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import javax.swing.Timer;
import javax.swing.table.*;
/**
* @author _______________
*
* Board.java
*
* The Board class gives information to the InitializeJTable class regarding
* the data-type of the JTable elements, how many rows/columns are in the JTable, etc;
*
* I extended Board with AbstractTableModel, a class that allows me to display any data-type
* inside the elements of the JTable.
*
* This class also has method declarations that are required by AbstractTableModel, these methods are:
* - getRowCount()
* - getColumnCount()
* - getValueAt(int, int)
*
*/
@SuppressWarnings("serial")
public class Board extends AbstractTableModel {
TableColorSetter TCS;
boolean lost = false;
InitializeGUI iGUI;
InitializeJTable iJT;
public int SPEED = 1000;
L l = new L();
public Block currentBlock = l;
public int[][] boxes;//A 2D Array of booleans that defines the status of the Tetris board. Used by InitializeJTable and InitializePreviewJTable
/*
* boardType is an integer that works with the constructor.
*
* If boardType is equal to 0, the constructor generates a 22x10 array (This is used with the main board)
* However, if boardType is equal to 1, the constructor generates a 4x4 array (This is used with the preview/hold board, a smaller board on the side)
*/
public Board(int boardType) {
if(boardType == 0) {
boxes = new int[22][10];
loop();
} else if(boardType == 1) boxes = new int[4][4];
}
/*
* getRowCount()
*
* getRowCount is a required declaration by the AbstractTableModel class.
* @return the amount of rows in the boxes boolean
*/
@Override
public int getRowCount() {
return boxes.length;
}
public int getTetrisType(Block block) {
return block.getTetrisType();
}
public void letPieceDown(int origA, int origB, int tetrisType) {
boxes[origA][origB] = 0;
boxes[origA + 1][origB] = tetrisType;
}
/*
* getColumnCount()
*
* getColumnCount() is a required declaration by the AbstractTableModel class.
* @return the amount of columns in the boxes boolean
*/
@Override
public int getColumnCount() {
return boxes[0].length;
}
@Override
public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
boxes[rowIndex][columnIndex] = (int)aValue;
fireTableCellUpdated(rowIndex, columnIndex);
}
/*
* getValueAt()
*
* getValueAt() is a required declaration by the AbstractTableModel class.
* returns the amount of columns in the boxes boolean
*
* @param int rowIndex The row index of the boolean that you want to return.
* int columnIndex The column index of the boolean that you want to return.
*
* @return the value of the boolean at the specified location in the boolean array.
*/
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
return boxes[rowIndex][columnIndex];
}
public int getVal(int row, int col) {
return boxes[row][col];
}
/**
*
* loop();
*
* The loop() method is a very rough draft in regards to placing Tetris objects on the board and having them move, and stack.
*
* TODO:
*/
public void loop() {
Timer timer = new
Timer(SPEED, new ActionListener() {
int x = 0;
int y = 0;
@Override
public void actionPerformed(ActionEvent e) {
while(lost = false) {
for(int a = 0; a < getColumnCount(); a++) {
for(int b = 0; b < getRowCount(); b++) {
TCS.getTableCellRendererComponent(iJT.getTable(), "", false, false, b, a);
}
}
}
if(x == getRowCount() - 1) {
x = 0;
} else if(boxes[x + 1][y] != 0 && x == 0) {
boxes[x][y] = getTetrisType(currentBlock);
fireTableDataChanged();
//System.out.println("GAME OVER!");
//y++; //Just for testing.
PlaySound sound = new PlaySound();
sound.setSoundType(1);
sound.start();
((Timer)e.getSource()).stop();
} else if(boxes[x + 1][y] != 0) {
x = 0;
} else {
//System.out.println("Pos: " + x + ", 0. Row count: " + getRowCount() + " -- " + x);
letPieceDown(x, y, getTetrisType(currentBlock));
fireTableDataChanged();
x++;
}
}
});
timer.start();
}
}
InitializeJTable:
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumnModel;
import java.awt.Color;
import java.awt.Component;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTable;
/**
* @author _________________
*
* InitializeJTable.java
*
* The InitializeJTable class sets up the JTable to look like a Tetris board.
*
* @TODO: Add more commenting
*/
@SuppressWarnings("serial")
public class InitializeJTable extends JPanel {
private int COLS = 10;
private int HEIGHT = 30;
Color white = Color.WHITE;
Color black = Color.BLACK;
Board tetrisBoard;
JTable table;
public Board returnBoard() {
return tetrisBoard;
}
public JTable getTable() {
return table;
}
public InitializeJTable() { //The InitializeJTable constructor
tetrisBoard = new Board(0); //Create a new board of 22x10 booleans, with a boardType of 0.
table = new JTable(tetrisBoard); //Apply the information from the Board constructor to the JTable. (Information like, how many rows/cols in the JTable, what data-type the JTable elements are, etc)
//setLayout(new GridBagLayout()); //Sets the Layout of the JTable to a GridBagLayout. This means, it makes the JTable look like a grid.
table.setCellSelectionEnabled(false); //Disables dragging/selection of columns on the JTable with the mouse. We won't be needing that.
TableColumnModel columns = table.getColumnModel(); //Gets information about the columns of the JTable. I need this to set the length of the columns (to make them square)
table.setRowHeight(HEIGHT); //Sets the height of the JTable rows to HEIGHT int, currently set to 30. Can be easily changed.
//table.setForeground(white); //Use this to make all blocks white. Still need to make it work correctly.
/*
* Sadly, there isn't a -- table.setColumnHeight(int) -- method in the JTable API. (to set the length of the columns to the specified integer)
*
* So I have to manually set the width of each column. This is why I declared the TableColumnModel above
*/
for(int a = 0; a < COLS; a++) {
columns.getColumn(a).setPreferredWidth(HEIGHT); //Sets the height of the JTable columns to HEIGHT int, currently set to 30. Can be changed easily.
}
add(table);//The table's all set up correctly, add it.
}
}
解决方案
There is a relationship between the data/model and the view/table. The model maintains the "what", the view controls the "how".
JTable provides a means by which you can the behaviour of the "how" (stuff gets rendered) through the use of TableCellRenderers, these are responsible for determining how a cell should be "painted" based on the value from the "what" from the model.
Start by having a look at How to Use Tables and Using Custom Renderers
Now, this example uses a double value to determine the distance from 1 the cell value is, which represents the color (black = 0; white = 1) that the cell should be painted. To accomplish this, it uses a custom TableCellRenderer which converts the value in the model (the "what") into a color (or the "how")
public class PaintTableCellRenderer extends DefaultTableCellRenderer {
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
super.getTableCellRendererComponent(table, "", isSelected, hasFocus, row, column);
if (value instanceof Double) {
double distance = (double) value;
int part = (int) (255 * distance);
Color color = new Color(part, part, part);
setBackground(color);
} else {
setBackground(Color.WHITE);
}
return this;
}
}
It also demonstrates a couple of other things you might need to know about the JTable as well.
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.util.Enumeration;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableColumn;
public class Smile {
public static void main(String[] args) {
new Smile();
}
public Smile() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
private double[][] smily = {
{1, 1, 1, 1, 1, 0.996, 1, 0.843, 0.784, 0.788, 0.773, 0.769, 0.765, 0.765, 0.788, 0.784, 0.847, 1, 0.996, 1, 1, 1, 1, 0.996},
{1, 1, 1, 1, 1, 0.871, 0.733, 0.761, 0.847, 0.941, 0.941, 0.941, 0.941, 0.941, 0.933, 0.843, 0.761, 0.733, 0.871, 1, 1, 1, 1, 1},
{1, 1, 1, 1, 0.784, 0.733, 0.902, 0.941, 0.941, 0.941, 0.945, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.898, 0.733, 0.784, 1, 1, 1, 1},
{1, 1, 1, 0.765, 0.773, 0.945, 0.945, 0.941, 0.929, 0.937, 0.941, 0.941, 0.945, 0.941, 0.957, 0.91, 0.941, 0.941, 0.941, 0.78, 0.761, 1, 1, 1},
{1, 1, 0.808, 0.773, 0.941, 0.941, 0.941, 0.941, 0.294, 0.447, 0.941, 0.941, 0.941, 0.941, 0.702, 0.239, 0.886, 0.941, 0.945, 0.941, 0.78, 0.8, 1, 1},
{1, 0.89, 0.725, 0.945, 0.941, 0.941, 0.945, 0.843, 0, 0, 0.922, 0.945, 0.941, 0.941, 0.408, 0, 0.663, 0.941, 0.941, 0.945, 0.941, 0.725, 0.89, 1},
{0.992, 0.753, 0.902, 0.941, 0.945, 0.945, 0.941, 0.725, 0.051, 0, 0.808, 0.941, 0.941, 0.945, 0.294, 0.051, 0.553, 0.941, 0.941, 0.941, 0.941, 0.91, 0.741, 0.984},
{0.871, 0.78, 0.941, 0.941, 0.945, 0.945, 0.941, 0.694, 0.051, 0, 0.784, 0.945, 0.941, 0.941, 0.278, 0, 0.518, 0.941, 0.941, 0.945, 0.941, 0.941, 0.78, 0.878},
{0.816, 0.855, 0.941, 0.945, 0.945, 0.945, 0.941, 0.737, 0, 0.051, 0.82, 0.941, 0.941, 0.941, 0.302, 0.051, 0.565, 0.941, 0.949, 0.945, 0.941, 0.941, 0.863, 0.804},
{0.8, 0.945, 0.941, 0.945, 0.945, 0.941, 0.941, 0.875, 0, 0, 0.937, 0.941, 0.941, 0.941, 0.443, 0, 0.694, 0.945, 0.945, 0.945, 0.945, 0.949, 0.941, 0.765},
{0.769, 0.941, 0.945, 0.957, 0.961, 0.941, 0.945, 0.941, 0.443, 0.565, 0.945, 0.941, 0.941, 0.941, 0.769, 0.388, 0.918, 0.941, 0.941, 0.941, 0.945, 0.941, 0.941, 0.78},
{0.753, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.953, 0.941, 0.941, 0.941, 0.941, 0.945, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.788},
{0.741, 0.945, 0.839, 0.427, 0.624, 0.941, 0.941, 0.945, 0.941, 0.941, 0.941, 0.949, 0.945, 0.945, 0.941, 0.941, 0.941, 0.941, 0.941, 0.6, 0.376, 0.941, 0.945, 0.784},
{0.749, 0.941, 0.914, 0.345, 0.647, 0.941, 0.945, 0.949, 0.945, 0.945, 0.941, 0.941, 0.945, 0.941, 0.945, 0.945, 0.945, 0.945, 0.941, 0.702, 0.384, 0.941, 0.941, 0.78},
{0.796, 0.945, 0.941, 0.627, 0.592, 0.941, 0.941, 0.941, 0.945, 0.945, 0.945, 0.941, 0.949, 0.945, 0.941, 0.945, 0.945, 0.937, 0.945, 0.58, 0.631, 0.941, 0.937, 0.776},
{0.812, 0.859, 0.941, 0.855, 0.384, 0.957, 0.941, 0.945, 0.945, 0.945, 0.941, 0.953, 0.941, 0.945, 0.945, 0.945, 0.941, 0.941, 0.941, 0.384, 0.941, 0.941, 0.867, 0.812},
{0.871, 0.788, 0.941, 0.941, 0.533, 0.51, 0.941, 0.941, 0.941, 0.945, 0.949, 0.945, 0.945, 0.945, 0.941, 0.937, 0.941, 0.945, 0.522, 0.522, 0.941, 0.941, 0.792, 0.886},
{0.992, 0.761, 0.914, 0.941, 0.941, 0.325, 0.612, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.624, 0.318, 0.941, 0.945, 0.91, 0.765, 0.988},
{1, 0.882, 0.741, 0.941, 0.941, 0.922, 0.337, 0.475, 0.894, 0.941, 0.941, 0.941, 0.941, 0.941, 0.945, 0.894, 0.49, 0.325, 0.925, 0.941, 0.941, 0.753, 0.894, 1},
{1, 1, 0.796, 0.78, 0.941, 0.941, 0.941, 0.592, 0.447, 0.565, 0.667, 0.737, 0.737, 0.667, 0.565, 0.451, 0.588, 0.941, 0.941, 0.941, 0.796, 0.808, 1, 1},
{1, 1, 0.996, 0.753, 0.788, 0.941, 0.941, 0.941, 0.941, 0.702, 0.584, 0.557, 0.553, 0.592, 0.698, 0.906, 0.941, 0.945, 0.941, 0.796, 0.769, 0.996, 1, 1},
{1, 1, 1, 1, 0.769, 0.745, 0.922, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.941, 0.918, 0.741, 0.776, 1, 1, 0.996, 1},
{1, 0.996, 1, 1, 1, 0.851, 0.733, 0.773, 0.867, 0.945, 0.941, 0.941, 0.941, 0.941, 0.945, 0.867, 0.769, 0.725, 0.851, 1, 1, 1, 1, 1},
{1, 1, 1, 1, 1, 1, 0.984, 0.843, 0.78, 0.761, 0.78, 0.796, 0.796, 0.784, 0.765, 0.78, 0.835, 0.984, 1, 1, 1, 1, 1, 1}
};
public TestPane() {
AsciiTableModel model = new AsciiTableModel();
model.setData(smily);
JTable table = new JTable(model);
table.setRowHeight(24);
Enumeration<TableColumn> columns = table.getColumnModel().getColumns();
while (columns.hasMoreElements()) {
TableColumn col = columns.nextElement();
col.setWidth(24);
col.setPreferredWidth(24);
col.setMinWidth(24);
col.setMaxWidth(24);
}
table.setRowHeight(24);
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
table.setDefaultRenderer(Object.class, new PaintTableCellRenderer());
setLayout(new BorderLayout());
add(new JScrollPane(table));
}
@Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
}
public class PaintTableCellRenderer extends DefaultTableCellRenderer {
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
super.getTableCellRendererComponent(table, "", isSelected, hasFocus, row, column);
if (value instanceof Double) {
double distance = (double) value;
int part = (int) (255 * distance);
Color color = new Color(part, part, part);
setBackground(color);
} else {
setBackground(Color.WHITE);
}
return this;
}
}
public class AsciiTableModel extends AbstractTableModel {
private double[][] data;
public AsciiTableModel() {
data = new double[24][24];
}
public void setData(double[][] value) {
data = value;
fireTableDataChanged();
}
@Override
public int getRowCount() {
return 24;
}
@Override
public int getColumnCount() {
return 24;
}
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
return data[rowIndex][columnIndex];
}
}
}
I had intended to provide a "sad" face which you could switch between, but my daughter wanted me to go paint with her, sorry ;)
这篇关于如何根据单元格中的值来对JTable的单个单元格进行着色？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
