MiniCAD迷你绘图JAVA实现

package com.cube; import javax.imageio.ImageIO; import javax.swing.*; import javax.swing.filechooser.FileNameExtensionFilter; import java.awt.*; import java.awt.event.*; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.Iterator; public class Main { ArrayList<Geometric> geoObj = new ArrayList(); JFrame jFrame = new JFrame(); PaintPanel panel = new PaintPanel(); int clickWhich = 0; int selection; ImageIcon imgIcon; boolean isSel = false; boolean isOpen = false; Color color; String inputText = ""; public static void main(String[] args) { new Main(); } class PaintPanel extends JPanel { class Line extends Geometric { Line(Point x, Point y, Color c){ pointFirst = x; pointSecond = y; defaultColor = c; height = (pointFirst.y - pointSecond.y); width = (pointFirst.x - pointSecond.x); } @Override void drawPanel(Graphics g) { g.setColor(defaultColor); g.drawLine(pointFirst.x, pointFirst.y, pointFirst.x - width, pointFirst.y - height); } @Override boolean clickTest(Point p) { int min_xpos = Math.min(pointFirst.x, pointSecond.x); int max_ypos = Math.max(pointFirst.y, pointSecond.y); int min_ypos = Math.min(pointFirst.y, pointSecond.y); int max_xpos = Math.max(pointFirst.x, pointSecond.x); if (p.x >= min_xpos && p.y >= min_ypos && p.x <= max_xpos && p.y <= max_ypos) { panel.setCursor(new Cursor(Cursor.MOVE_CURSOR)); return true; } else return false; } } class Rectangle extends Geometric { Rectangle(Point x, Point y, Color c) { strokeWid = 10; pointFirst = x; pointSecond = y; defaultColor = c; height = Math.abs(pointFirst.y - pointSecond.y); width = Math.abs(pointFirst.x - pointSecond.x); } @Override void drawPanel(Graphics g) { Graphics2D g2d = (Graphics2D)g; g2d.setColor(defaultColor); Stroke stroke = new BasicStroke(strokeWid, BasicStroke.CAP_ROUND, BasicStroke.JOIN_MITER); g2d.setStroke(stroke); g2d.drawRect(Math.min(pointFirst.x, pointSecond.x), Math.min(pointFirst.y, pointSecond.y), Math.abs(pointSecond.x - pointFirst.x), Math.abs(pointSecond.y - pointFirst.y)); } @Override boolean clickTest(Point p) { int min_xpos = Math.min(pointFirst.x, pointSecond.x); int max_ypos = Math.max(pointFirst.y, pointSecond.y); int min_ypos = Math.min(pointFirst.y, pointSecond.y); int max_xpos = Math.max(pointFirst.x, pointSecond.x); if (p.x >= min_xpos && p.y >= min_ypos && p.x <= max_xpos && p.y <= max_ypos) { panel.setCursor(new Cursor(Cursor.MOVE_CURSOR)); return true; } else return false; } } class Circle extends Geometric { Circle(Point x, Point y, Color c) { strokeWid = 10; pointFirst = x; pointSecond = y; defaultColor = c; height = Math.abs(pointFirst.y - pointSecond.y); width = Math.abs(pointFirst.x - pointSecond.x); } @Override void drawPanel(Graphics g) { Graphics2D g2d = (Graphics2D)g; g2d.setColor(defaultColor); Stroke stroke = new BasicStroke(strokeWid, BasicStroke.CAP_ROUND, BasicStroke.JOIN_MITER); g2d.setStroke(stroke); g2d.drawOval(Math.min(pointFirst.x, pointSecond.x), Math.min(pointFirst.y, pointSecond.y), Math.abs(pointSecond.x - pointFirst.x), Math.abs(pointSecond.x - pointFirst.x)); // Stroke stroke = new BasicStroke(strokeWid); // g.setStroke(stroke); } @Override boolean clickTest(Point p) { int min_xpos = Math.min(pointFirst.x, pointSecond.x); int max_ypos = Math.max(pointFirst.y, pointSecond.y); int min_ypos = Math.min(pointFirst.y, pointSecond.y); int max_xpos = Math.max(pointFirst.x, pointSecond.x); if (p.x >= min_xpos && p.y >= min_ypos && p.x <= max_xpos && p.y <= max_ypos) { panel.setCursor(new Cursor(Cursor.MOVE_CURSOR)); return true; } else return false; } } class Text extends Geometric { String str; //int size; Text(Point x, Color c, String s) { pointFirst = x; defaultColor = c; str = s; size = 10; //TODO: } @Override void drawPanel(Graphics g) { Graphics2D g2d = (Graphics2D)g; g2d.setColor(defaultColor); g2d.setFont(new Font("BOLD", Font.BOLD, size)); Stroke stroke = new BasicStroke(strokeWid, BasicStroke.CAP_ROUND, BasicStroke.JOIN_MITER); g2d.setStroke(stroke); g2d.drawString(str, pointFirst.x, pointFirst.y); } @Override boolean clickTest(Point p) { if (p.x >= pointFirst.x && p.y <= pointFirst.y && p.x <= pointFirst.x + 10 * str.length() && p.y >= pointFirst.y - 10) { panel.setCursor(new Cursor(Cursor.MOVE_CURSOR)); return true; } else return false; } } boolean on = false; Point pointFirst, pointSecond, point; protected void paintComponent(Graphics g) { super.paintComponent(g); if (isOpen) { g.drawImage(imgIcon.getImage(), 0, 0, 760, 480, jFrame); } Iterator<Geometric> it = geoObj.iterator(); while (it.hasNext()) { Geometric tmp = it.next(); g.setColor(tmp.defaultColor); tmp.drawPanel(g); } if (on) { if (clickWhich == 1) { Line tmp1 = new Line(pointFirst, point, color); tmp1.drawPanel(g); } if (clickWhich == 2) { Circle tmp1 = new Circle(pointFirst, point, color); tmp1.drawPanel(g); } if (clickWhich == 3) { Rectangle tmp1 = new Rectangle(pointFirst, point, color); tmp1.drawPanel(g); } if (clickWhich == 4) { } } } PaintPanel() { color = Color.BLACK; setBackground(Color.WHITE); setFocusable(true); this.addMouseListener(new MouseListener() { @Override public void mouseReleased(MouseEvent e) { panel.setCursor(new Cursor(Cursor.DEFAULT_CURSOR)); } @Override public void mousePressed(MouseEvent e) { on = !on; if (clickWhich == 0) { Iterator<Geometric> it = geoObj.iterator(); int i = 0; isSel = false; while (it.hasNext()) {