Java 释放鼠标时删除带有颜色的矩形
我正在开发一个游戏,在我游戏的某些部分,我希望矩形在鼠标释放时消失。我在Java 释放鼠标时删除带有颜色的矩形,java,swing,graphics,Java,Swing,Graphics,我正在开发一个游戏,在我游戏的某些部分,我希望矩形在鼠标释放时消失。我在arrayList中放置了26个矩形,并在释放鼠标时删除了单击的特定矩形因此,如果我删除fill方法,矩形将成功消失,但如果fill方法存在,矩形将不再工作。 以下是我的绘制方法: public void paintComponent(Graphics g) { super.paintComponent(g); Image img = Toolkit.getDefaultTool
arrayList
中放置了26个矩形,并在释放鼠标时删除了单击的特定矩形因此,如果我删除fill
方法,矩形将成功消失,但如果fill
方法存在,矩形将不再工作。
以下是我的绘制方法:
public void paintComponent(Graphics g)
{
super.paintComponent(g);
Image img = Toolkit.getDefaultToolkit().getImage(Rectangles2.class.getResource("background.jpg"));
g.drawImage(img, 0, 0, this.getWidth(), this.getHeight(), this);
Graphics2D g2 = (Graphics2D) g;
for (Rectangle s : rectanglesList) {
g2.draw(s);
}
g2.setColor(bColor);
g2.fill(box1);
g2.fill(box2);
g2.fill(box3);
g2.fill(box4);
g2.fill(box5);
g2.fill(box6);
g2.fill(box7);
g2.fill(box8);
g2.fill(box9);
g2.fill(box10);
g2.fill(box11);
g2.fill(box12);
g2.fill(box25);
g2.setColor(wColor);
g2.fill(box13);
g2.fill(box14);
g2.fill(box15);
g2.fill(box16);
g2.fill(box17);
g2.fill(box18);
g2.fill(box19);
g2.fill(box20);
g2.fill(box21);
g2.fill(box22);
g2.fill(box23);
g2.fill(box24);
g2.fill(box26);
}
下面是我如何删除矩形的过程(只是一个摘录):
以下是bColor
和wColor
的值:
Color bColor = Color.BLACK;
Color wColor = Color.WHITE;
注意:
pickedPanelNum
仅用于分配int值,与问题无关
我认为这是因为当我重新绘制时,填充方法仍然存在。但是,我不知道绘制矩形的其他方法。
我希望我的问题能说清楚。如果你有办法解决这个问题,请告诉我。谢谢大家!
更新:
这是我的程序的一个较短、可运行的版本。(但不包括背景图像):
import java.awt.*;
导入java.awt.Color.*;
导入java.awt.event.*;
导入javax.swing.*;
导入java.util.*;
导入java.awt.geom.Rectangle2D;
公共类Rec扩展JComponent
{
public ArrayList rectanglesList=新的ArrayList();
公共整数arrx[]=新整数[120];
公共int arry[]=新int[120];
JFrame=新JFrame();
公共int xSize=2000;
公共规模=1000;
公共int x;
公共智力;
public int pickedPanelNum=0;
公共字符串pickedPanelDash=“”;
公共字符串pickedPanelColor=“”;
颜色b颜色=颜色。黑色;
颜色wColor=Color.WHITE;
布尔removedPanel=false;
公共无效启动框架()
{
Random rand=新的Random();
对于(int x=0;x而言,即使从列表中删除box1
,也无法阻止它在paintComponent
方法中填充,for循环
仅在列表中绘制矩形的轮廓,但无论如何,代码都会隐式填充它们
因此,首先,去掉所有box{n}
变量
public void paintComponent(Graphics g) {
super.paintComponent(g);
//Image img = Toolkit.getDefaultToolkit().getImage(Rectangles2.class.getResource("background.jpg"));
//g.drawImage(img, 0, 0, this.getWidth(), this.getHeight(), this);
Graphics2D g2 = (Graphics2D) g;
for (Rectangle s : rectanglesList) {
g2.setColor(bColor);
g2.fill(s);
g2.setColor(wColor);
g2.draw(s);
}
}
因此,这只是使用矩形列表
首先绘制矩形并填充它们
然后,让我们更新mousererelease
public void mouseReleased(MouseEvent event) {
// Because the rectangles are painted in order, the later
// rectangles are painted over the eailer ones, so, we reverse
// the list so we can check for the higher positioned
// rectangles
List<Rectangle> copy = new ArrayList<>(rectanglesList);
Collections.reverse(copy);
for (Rectangle r : copy) {
if (r.contains(event.getPoint())) {
rectanglesList.remove(r);
break;
}
}
event.getComponent().repaint();
}
public void mouseereleased(MouseEvent事件){
//因为矩形是按顺序绘制的,所以
//长方形被画在更大的长方形上,所以我们倒过来
//列表,以便我们可以检查更高的位置
//矩形
列表副本=新的ArrayList(矩形列表);
收藏。反面(复印件);
用于(矩形r:复制){
if(r.contains(event.getPoint())){
矩形列表。移除(r);
打破
}
}
event.getComponent().repaint();
}
好的,这有点奇怪,但基本上,我们反转了矩形列表(因为列表中后面出现的矩形是在前面出现的矩形上绘制的)并检查鼠标是否在其中任何一个内被单击。当我们找到匹配项时,我们就会跳出循环并重新绘制生成事件的组件
而且,因为很高兴看到这个东西运行,一个完整的例子
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Random;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class Rec extends JComponent {
public ArrayList<Rectangle> rectanglesList = new ArrayList<Rectangle>();
public int arrx[] = new int[120];
public int arry[] = new int[120];
JFrame frame = new JFrame();
public int xSize = 2000;
public int ySize = 1000;
public int x;
public int y;
public int pickedPanelNum = 0;
public String pickedPanelDash = "";
public String pickedPanelColor = "";
Color bColor = Color.BLACK;
Color wColor = Color.WHITE;
boolean removedPanel = false;
public void launchFrame() {
Random rand = new Random();
for (int x = 0; x < 10; x++) {
arrx[x] = rand.nextInt(640);
arry[x] = rand.nextInt(590);
rectanglesList.add(new Rectangle(arrx[x], arry[x], 80, 90));
}
JPanel mainPanel = new JPanel();
JPanel panelsPane = new JPanel() {
public void paintComponent(Graphics g) {
super.paintComponent(g);
// Image img = Toolkit.getDefaultToolkit().getImage(Rectangles2.class.getResource("background.jpg"));
// g.drawImage(img, 0, 0, this.getWidth(), this.getHeight(), this);
Graphics2D g2 = (Graphics2D) g;
for (Rectangle s : rectanglesList) {
g2.setColor(bColor);
g2.fill(s);
g2.setColor(wColor);
g2.draw(s);
}
}
};
JPanel rightPane = new JPanel();
panelsPane.addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent event) {
x = event.getX();
y = event.getY();
}
public void mouseReleased(MouseEvent event) {
// Because the rectangles are painted in order, the later
// rectangles are painted over the eailer ones, so, we reverse
// the list so we can check for the higher positioned
// rectangles
List<Rectangle> copy = new ArrayList<>(rectanglesList);
Collections.reverse(copy);
for (Rectangle r : copy) {
if (r.contains(event.getPoint())) {
rectanglesList.remove(r);
break;
}
}
event.getComponent().repaint();
}
});
panelsPane.addMouseMotionListener(new MouseAdapter() {
public void mouseDragged(MouseEvent event) {
}
public void mouseReleased(MouseEvent event) {
}
public void mouseClicked(MouseEvent event) {
}
public void mouseEntered(MouseEvent event) {
}
public void mouseExited(MouseEvent event) {
}
});
panelsPane.setPreferredSize(new Dimension(800, ySize - 315));
rightPane.setPreferredSize(new Dimension(530, ySize - 315));
mainPanel.setPreferredSize(new Dimension(xSize, ySize));
frame.setPreferredSize(new Dimension(xSize, ySize));
rightPane.setBackground(Color.gray);
mainPanel.add(panelsPane);
mainPanel.add(rightPane);
frame.add(mainPanel);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setLocationRelativeTo(null);
}
public static void main(String args[]) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
Rec obj = new Rec();
obj.launchFrame();
}
});
}
}
导入java.awt.Color;
导入java.awt.Dimension;
导入java.awt.EventQueue;
导入java.awt.Graphics;
导入java.awt.Graphics2D;
导入java.awt.Rectangle;
导入java.awt.event.MouseAdapter;
导入java.awt.event.MouseEvent;
导入java.util.ArrayList;
导入java.util.Collections;
导入java.util.Iterator;
导入java.util.List;
导入java.util.Random;
导入javax.swing.JComponent;
导入javax.swing.JFrame;
导入javax.swing.JPanel;
导入javax.swing.UIManager;
导入javax.swing.UnsupportedLookAndFeelException;
公共类Rec扩展JComponent{
public ArrayList rectanglesList=新的ArrayList();
公共整数arrx[]=新整数[120];
公共int arry[]=新int[120];
JFrame=新JFrame();
公共int xSize=2000;
公共规模=1000;
公共int x;
公共智力;
public int pickedPanelNum=0;
公共字符串pickedPanelDash=“”;
公共字符串pickedPanelColor=“”;
颜色b颜色=颜色。黑色;
颜色wColor=Color.WHITE;
布尔removedPanel=false;
公共无效启动框架(){
Random rand=新的Random();
对于(int x=0;x<10;x++){
arrx[x]=rand.nextInt(640);
arry[x]=兰特·耐克斯汀(590);
添加(新的矩形(arrx[x],arry[x],80,90));
}
JPanel mainPanel=新的JPanel();
JPanel panelsPane=新的JPanel(){
公共组件(图形g){
超级组件(g);
//Image img=Toolkit.getDefaultToolkit().getImage(Rectangles2.class.getResource(“background.jpg”);
//g.drawImage(img,0,0,this.getWidth(),this.getHeight(),this);
图形2d g2=(图形2d)g;
用于(矩形s:矩形列表){
g2.设置颜色(b颜色);
g2.填充;
g2.setColor(wColor);
g2.抽签;
}
}
};
JPanel rightPane=新的JPanel();
panelsPane.addMouseListener(新的MouseAdapter(){
公共无效鼠标按下(鼠标事件){
x=event.getX();
y=event.getY();
}
公共无效MouseEvent事件(MouseEvent事件){
//因为矩形是按顺序绘制的,所以
//长方形被画在更大的长方形上,所以我们倒过来
//名单上写的是w
public void mouseReleased(MouseEvent event) {
// Because the rectangles are painted in order, the later
// rectangles are painted over the eailer ones, so, we reverse
// the list so we can check for the higher positioned
// rectangles
List<Rectangle> copy = new ArrayList<>(rectanglesList);
Collections.reverse(copy);
for (Rectangle r : copy) {
if (r.contains(event.getPoint())) {
rectanglesList.remove(r);
break;
}
}
event.getComponent().repaint();
}
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Random;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class Rec extends JComponent {
public ArrayList<Rectangle> rectanglesList = new ArrayList<Rectangle>();
public int arrx[] = new int[120];
public int arry[] = new int[120];
JFrame frame = new JFrame();
public int xSize = 2000;
public int ySize = 1000;
public int x;
public int y;
public int pickedPanelNum = 0;
public String pickedPanelDash = "";
public String pickedPanelColor = "";
Color bColor = Color.BLACK;
Color wColor = Color.WHITE;
boolean removedPanel = false;
public void launchFrame() {
Random rand = new Random();
for (int x = 0; x < 10; x++) {
arrx[x] = rand.nextInt(640);
arry[x] = rand.nextInt(590);
rectanglesList.add(new Rectangle(arrx[x], arry[x], 80, 90));
}
JPanel mainPanel = new JPanel();
JPanel panelsPane = new JPanel() {
public void paintComponent(Graphics g) {
super.paintComponent(g);
// Image img = Toolkit.getDefaultToolkit().getImage(Rectangles2.class.getResource("background.jpg"));
// g.drawImage(img, 0, 0, this.getWidth(), this.getHeight(), this);
Graphics2D g2 = (Graphics2D) g;
for (Rectangle s : rectanglesList) {
g2.setColor(bColor);
g2.fill(s);
g2.setColor(wColor);
g2.draw(s);
}
}
};
JPanel rightPane = new JPanel();
panelsPane.addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent event) {
x = event.getX();
y = event.getY();
}
public void mouseReleased(MouseEvent event) {
// Because the rectangles are painted in order, the later
// rectangles are painted over the eailer ones, so, we reverse
// the list so we can check for the higher positioned
// rectangles
List<Rectangle> copy = new ArrayList<>(rectanglesList);
Collections.reverse(copy);
for (Rectangle r : copy) {
if (r.contains(event.getPoint())) {
rectanglesList.remove(r);
break;
}
}
event.getComponent().repaint();
}
});
panelsPane.addMouseMotionListener(new MouseAdapter() {
public void mouseDragged(MouseEvent event) {
}
public void mouseReleased(MouseEvent event) {
}
public void mouseClicked(MouseEvent event) {
}
public void mouseEntered(MouseEvent event) {
}
public void mouseExited(MouseEvent event) {
}
});
panelsPane.setPreferredSize(new Dimension(800, ySize - 315));
rightPane.setPreferredSize(new Dimension(530, ySize - 315));
mainPanel.setPreferredSize(new Dimension(xSize, ySize));
frame.setPreferredSize(new Dimension(xSize, ySize));
rightPane.setBackground(Color.gray);
mainPanel.add(panelsPane);
mainPanel.add(rightPane);
frame.add(mainPanel);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setLocationRelativeTo(null);
}
public static void main(String args[]) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
Rec obj = new Rec();
obj.launchFrame();
}
});
}
}