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[英]Java: Clickable grid project - what to use? (JFrames & JPanels)?
[英]Java: Grid of clickable elements
我打算為我當前的項目編寫一個編輯器,並且需要一些java swing。
基本上我需要某種框架內的網格; 應該能夠通過點擊選擇網格的單個元素,並使用下拉/選擇器元素,您應該能夠更改網格元素的顏色
任何人都可以告訴我,我需要哪些擺動部分? 任何幫助將非常感激 ;)
編輯:讓我們進入細節
這個編輯器計划生成我與我的一些朋友開發的Android策略游戲的地圖讓我們說我們有一個16x16字段的方形字段,默認情況下都是綠色的。 通過選擇單個字段,我希望能夠將此字段的顏色更改為其他字段。
另外,每個字段都應該能夠返回它的值(即顏色)
你的問題在細節上有點簡短,但也許你想要一個使用GridLayout的JPanel並保存一個其opaque屬性為true的JLabel數組。 您可以將一個MouseListener添加到JLabel,它顯示一個顯示可能顏色的JPopupMenu,然后根據選擇使用它來設置JLabel的背景顏色(顯示它已變為不透明)。
例如:
Main.java
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
public class Main {
private static void createAndShowGui() {
int rows = 20;
int cols = 40;
int cellWidth = 20;
ColorGrid mainPanel = new ColorGrid(rows, cols, cellWidth);
JFrame frame = new JFrame("Color Grid Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
ColorGrid.java
import java.awt.Dimension;
import java.awt.GridLayout;
import javax.swing.*;
@SuppressWarnings("serial")
public class ColorGrid extends JPanel {
private MyColor[][] myColors;
private JLabel[][] myLabels;
public ColorGrid(int rows, int cols, int cellWidth) {
myColors = new MyColor[rows][cols];
myLabels = new JLabel[rows][cols];
MyMouseListener myListener = new MyMouseListener(this);
Dimension labelPrefSize = new Dimension(cellWidth, cellWidth);
setLayout(new GridLayout(rows, cols));
for (int row = 0; row < myLabels.length; row++) {
for (int col = 0; col < myLabels[row].length; col++) {
JLabel myLabel = new JLabel();
myLabel = new JLabel();
myLabel.setOpaque(true);
MyColor myColor = MyColor.GREEN;
myColors[row][col] = myColor;
myLabel.setBackground(myColor.getColor());
myLabel.addMouseListener(myListener);
myLabel.setPreferredSize(labelPrefSize);
add(myLabel);
myLabels[row][col] = myLabel;
}
}
}
public MyColor[][] getMyColors() {
return myColors;
}
public void labelPressed(JLabel label) {
for (int row = 0; row < myLabels.length; row++) {
for (int col = 0; col < myLabels[row].length; col++) {
if (label == myLabels[row][col]) {
MyColor myColor = myColors[row][col].next();
myColors[row][col] = myColor;
myLabels[row][col].setBackground(myColor.getColor());
}
}
}
}
}
MyColor.java
import java.awt.Color;
public enum MyColor {
GREEN(Color.green, "Green", "g"), RED(Color.red, "Red", "r"),
BLUE(Color.blue, "Blue", "b"), YELLOW(Color.yellow, "Yellow", "y");
private Color color;
private String name;
private String shortName;
private MyColor(Color color, String name, String shortName) {
this.color = color;
this.name = name;
this.shortName = shortName;
}
public MyColor next() {
int index = 0;
for (int i = 0; i < MyColor.values().length; i++) {
if (MyColor.values()[i] == this) {
index = (i + 1) % MyColor.values().length;
}
}
return MyColor.values()[index];
}
public Color getColor() {
return color;
}
public String getName() {
return name;
}
public String getShortName() {
return shortName;
}
@Override
public String toString() {
return shortName;
}
}
MyMouseListener.java
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JLabel;
public class MyMouseListener extends MouseAdapter {
private ColorGrid colorGrid;
public MyMouseListener(ColorGrid colorGrid) {
this.colorGrid = colorGrid;
}
@Override
public void mousePressed(MouseEvent e) {
if (e.getButton() == MouseEvent.BUTTON1) {
colorGrid.labelPressed((JLabel)e.getSource());
} else if (e.getButton() == MouseEvent.BUTTON3) {
MyColor[][] myColors = colorGrid.getMyColors();
for (int row = 0; row < myColors.length; row++) {
for (int col = 0; col < myColors[row].length; col++) {
System.out.print(myColors[row][col] + " ");
}
System.out.println();
}
System.out.println();
}
}
}
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