JavaFX图片移动和拉伸
2024-05-09 12:56:04
功能实现：选择图片后，可以对图片进行移动和拉伸操作
代码如下：
import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.io.IOException;public class PicTest {static class Demo {private String picPath = "F:\\迅雷下载\\1.png";private int x, y, width, height;private Image image;public Demo() throws IOException {this.image = new ImageIcon(picPath).getImage();this.width = 200;this.height = 200;this.x = 0;this.y = 0;}public int getX() {return x;}public void setX(int x) {this.x = x;}public int getY() {return y;}public void setY(int y) {this.y = y;}public int getWidth() {return width;}public void setWidth(int width) {this.width = width;}public int getHeight() {return height;}public void setHeight(int height) {this.height = height;}public Image getImage() {return image;}public void setImage(Image image) {this.image = image;}}static class TestPanle extends JPanel {private Demo demo;public TestPanle(Demo demo) {this.demo = demo;}@Overridepublic void paint(Graphics g) {super.paint(g);g.drawImage(demo.getImage(), demo.getX(), demo.getY(), demo.getWidth(), demo.getHeight(), null);}}static class TestFrame extends JFrame {//窗体拉伸属性private final static int RESIZE_WIDTH = 5;// 判定是否为调整窗口状态的范围与边界距离private int mouseX;private int mouseY;int picX;int picY;int width;int height;int cursorType;public TestFrame() throws IOException {this.setTitle("Lin");this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);this.setSize(800, 800);Demo demo = new Demo();TestPanle panle = new TestPanle(demo);panle.addMouseMotionListener(new MouseMotionListener() {//鼠标拖动触发@Overridepublic void mouseDragged(MouseEvent e) {// 用于判断移动或拉伸if (e.getX() > demo.getX() &&e.getX() < demo.getX() + demo.getWidth() &&e.getY() > demo.getY() &&e.getY() < demo.getY() + demo.getHeight() &&// 如果光标类型没有改变就代表是移动，避免事件冲突cursorType == Cursor.DEFAULT_CURSOR) {demo.setX(picX + e.getX() - mouseX);demo.setY(picY + e.getY() - mouseY);
// System.out.println("============" + demo.getX() + " : " + demo.getY());} else {if (cursorType == Cursor.N_RESIZE_CURSOR) { // 向上拉伸demo.setY(picY + (e.getY() - mouseY));if (e.getY() - mouseY > 0) {demo.setHeight(height - (e.getY() - mouseY));} else {demo.setHeight(height - (e.getY() - mouseY));}} else if (cursorType == Cursor.S_RESIZE_CURSOR) { // 向下拉伸if (e.getY() - mouseY > 0) {demo.setHeight(height + (e.getY() - mouseY));} else {demo.setHeight(height + (e.getY() - mouseY));}} else if (cursorType == Cursor.W_RESIZE_CURSOR) { // 向左拉伸demo.setX(picX + (e.getX() - mouseX));if (e.getX() - mouseX > 0) {demo.setWidth(width - (e.getX() - mouseX));} else {demo.setWidth(width - (e.getX() - mouseX));}} else if (cursorType == Cursor.E_RESIZE_CURSOR) { // 向右拉伸if (e.getX() - mouseX > 0) {demo.setWidth(width + (e.getX() - mouseX));} else {demo.setWidth(width + (e.getX() - mouseX));}} else if (cursorType == Cursor.NW_RESIZE_CURSOR) { // 向左上拉伸if (e.getY() - mouseY > 0 || e.getX() - mouseX > 0) {demo.setY(picY + (e.getY() - mouseY));demo.setHeight(height - (e.getY() - mouseY));demo.setX(picX + (e.getX() - mouseX));demo.setWidth(width - (e.getX() - mouseX));} else if (e.getY() - mouseY < 0 || e.getX() - mouseX < 0) {demo.setY(picY + (e.getY() - mouseY));demo.setHeight(height - (e.getY() - mouseY));demo.setX(picX + (e.getX() - mouseX));demo.setWidth(width - (e.getX() - mouseX));}} else if (cursorType == Cursor.NE_RESIZE_CURSOR) { // 向右上拉伸if (e.getY() - mouseY > 0 || e.getX() - mouseX > 0) {demo.setY(picY + (e.getY() - mouseY));demo.setHeight(height - (e.getY() - mouseY));demo.setWidth(width + (e.getX() - mouseX));} else if (e.getY() - mouseY < 0 || e.getX() - mouseX < 0) {demo.setY(picY + (e.getY() - mouseY));demo.setHeight(height - (e.getY() - mouseY));demo.setWidth(width + (e.getX() - mouseX));}} else if (cursorType == Cursor.SW_RESIZE_CURSOR) { // 向左下拉伸if (e.getY() - mouseY > 0 || e.getX() - mouseX > 0) {demo.setHeight(height + (e.getY() - mouseY));demo.setX(picX + (e.getX() - mouseX));demo.setWidth(width - (e.getX() - mouseX));} else if (e.getY() - mouseY < 0 || e.getX() - mouseX < 0) {demo.setHeight(height + (e.getY() - mouseY));demo.setX(picX + (e.getX() - mouseX));demo.setWidth(width - (e.getX() - mouseX));}} else if (cursorType == Cursor.SE_RESIZE_CURSOR) { // 向右下拉伸if (e.getY() - mouseY > 0 || e.getX() - mouseX > 0) {demo.setHeight(height + (e.getY() - mouseY));demo.setWidth(width + (e.getX() - mouseX));} else if (e.getY() - mouseY < 0 || e.getX() - mouseX < 0) {demo.setHeight(height + (e.getY() - mouseY));demo.setWidth(width + (e.getX() - mouseX));}}}}// 鼠标移动触发@Overridepublic void mouseMoved(MouseEvent e) {int mouseX = e.getX();int mouseY = e.getY();// 设置鼠标默认类型cursorType = Cursor.DEFAULT_CURSOR;if (mouseY >= demo.getY() && mouseY <= demo.getY() + RESIZE_WIDTH &&mouseX >= demo.getX() && mouseX <= demo.getX() + RESIZE_WIDTH) { // 光标在左上角cursorType = Cursor.NW_RESIZE_CURSOR;} else if (mouseY >= demo.getY() && mouseY <= demo.getY() + RESIZE_WIDTH &&mouseX <= demo.getX() + width && mouseX >= demo.getX() + width - RESIZE_WIDTH) { // 光标在右上角cursorType = Cursor.NE_RESIZE_CURSOR;} else if (mouseY <= demo.getY() + height && mouseY >= demo.getY() + height - RESIZE_WIDTH &&mouseX >= demo.getX() && mouseX <= demo.getX() + RESIZE_WIDTH) { // 光标在左下角cursorType = Cursor.SW_RESIZE_CURSOR;} else if (mouseY <= demo.getY() + height && mouseY >= demo.getY() + height - RESIZE_WIDTH &&mouseX <= demo.getX() + width && mouseX >= demo.getX() + width - RESIZE_WIDTH) { // 光标在右下角cursorType = Cursor.SE_RESIZE_CURSOR;} else if (mouseY >= demo.getY() && mouseY <= demo.getY() + RESIZE_WIDTH &&mouseX > demo.getX() && mouseX < demo.getX() + width) { // 光标在上边界cursorType = Cursor.N_RESIZE_CURSOR;} else if (mouseY <= demo.getY() + height && mouseY >= demo.getY() + height - RESIZE_WIDTH &&mouseX > demo.getX() && mouseX < demo.getX() + width) { // 光标在下边界cursorType = Cursor.S_RESIZE_CURSOR;} else if (mouseX >= demo.getX() && mouseX <= demo.getX() + RESIZE_WIDTH &&mouseY > demo.getY() && mouseY < demo.getY() + height) { // 光标在左边界cursorType = Cursor.W_RESIZE_CURSOR;} else if (mouseX <= demo.getX() + width && mouseX >= demo.getX() + width - RESIZE_WIDTH &&mouseY > demo.getY() && mouseY < demo.getY() + height) { // 光标在右边界cursorType = Cursor.E_RESIZE_CURSOR;}// 改变光标类型panle.setCursor(Cursor.getPredefinedCursor(cursorType));}});panle.addMouseListener(new MouseListener() {// 鼠标点击监听@Overridepublic void mouseClicked(MouseEvent e) {}// 鼠标按下监听@Overridepublic void mousePressed(MouseEvent e) {mouseX = e.getX();mouseY = e.getY();picX = demo.getX();picY = demo.getY();width = demo.getWidth();height = demo.getHeight();}// 鼠标释放监听@Overridepublic void mouseReleased(MouseEvent e) {mouseX = e.getX();mouseY = e.getY();picX = demo.getX();picY = demo.getY();width = demo.getWidth();height = demo.getHeight();}// 鼠标进入监听@Overridepublic void mouseEntered(MouseEvent e) {}// 鼠标退出监听@Overridepublic void mouseExited(MouseEvent e) {}});this.add(panle);this.setVisible(true);// 利用循环不断绘制画面while (true) {panle.repaint();}}}public static void main(String[] args) throws IOException {new TestFrame();}}运行结果如下：
在窗口中可以对图片进行移动和拉伸操作，由于拉伸方面判断逻辑比较多，比较繁杂，但整体功能实现还是比较简单。
由于只是总结用的，所以就只是简单的功能实现，直接运行就可以。。。
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