桌游编辑器实现之EditBox

 

作为一款编辑器，最基本的一个功能模块的小功能 可变大小的选框。便于用户直接定位显示所需要的大小和位置

实现效果：

我称这个功能模块为EditBox

package FinalClass;

import java.awt.Color;
import java.awt.Cursor;
import java.awt.Graphics;

import javax.swing.ImageIcon;
import javax.swing.JLabel;

import Util.Event;

import FileSys.ValueAttribute;

public class EditBox extends JLabel implements ValueAttribute {

    /**
     * 
*/
    private static final long serialVersionUID = 1L;
    private int px;
    private int py;
    private int posx;
    private int posy;
    private int width;
    private int heigh;
    private int readytochange = 0;
    private int border = 4;
    private boolean isEditable = false;
    private ImageIcon img = null;
    private String imgUrl;
    private String valueName = "";
    private int valueId = 0;
    private int color = 0x00ff00;
    private static int count=0;
    private Event e;

    public EditBox() {
        this.setBounds(10, 10, 40, 40);
        this.setFocusable(true);
        valueName="EditBox"+count;
        count++;
        Action();
    }

    public void addEvent(Event e)
    {
        this.e=e;
    }
    public void setImg(String url) {
        img = new ImageIcon(url);
        this.imgUrl=url;
        this.repaint();
    }
    public String getImgUrl()
    {
        return imgUrl;
    }
    private void getParam() {
        posx = this.getX();
        posy = this.getY();
        width = this.getWidth();
        heigh = this.getHeight();
    }
    @Override
    public void setTop()
    {
        this.getParent().setComponentZOrder(this, 0);
    }

    @Override
    public void paint(Graphics g) {
        // TODO Auto-generated method stub
        super.paint(g);
        g.setColor(new Color(color));
        if (isEditable) {
            g.fillRect(0, 0, border, border);
            g.fillRect(this.getWidth() - border, 0, border, border);
            g.fillRect(0, this.getHeight() - border, border, border);
            g.fillRect(this.getWidth() - border, this.getHeight() - border,
                    border, border);
        
        g.drawLine(border / 2, border / 2, this.getWidth() - border / 2,
                border / 2);
        g.drawLine(border / 2, border / 2, border / 2, this.getHeight()
                - border / 2);
        g.drawLine(border / 2, this.getHeight() - border / 2, this.getWidth()
                - border / 2, this.getHeight() - border / 2);
        g.drawLine(this.getWidth() - border / 2, this.getHeight() - border / 2,
                this.getWidth() - border / 2, border / 2);
        }
        if (img != null)
            g.drawImage(img.getImage(), border / 2, border / 2, this.getWidth()
                    - border, this.getHeight() - border, this);
        
    }

    private void isRTC() {
        readytochange = 0;
        this.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
        if (px > 0 && px < border) {
            if (py < border) {
                readytochange = 1;
                this.setCursor(Cursor
                        .getPredefinedCursor(Cursor.NW_RESIZE_CURSOR));
            }
            if (py > this.getHeight() - border) {
                readytochange = 2;
                this.setCursor(Cursor
                        .getPredefinedCursor(Cursor.NE_RESIZE_CURSOR));
            }
        }
        if (px > this.getWidth() - border) {
            if (py < border) {
                readytochange = 4;
                this.setCursor(Cursor
                        .getPredefinedCursor(Cursor.NE_RESIZE_CURSOR));
            }
            if (py > this.getHeight() - border) {
                readytochange = 3;
                this.setCursor(Cursor
                        .getPredefinedCursor(Cursor.NW_RESIZE_CURSOR));
            }
        }
    }

    private void changeBox(int mx, int my) {
        getParam();
        int wr = mx - px;
        int hr = my - py;
        px = mx;
        py = my;
        if (readytochange == 1) {
            this.setBounds(posx + wr, posy + hr, width - wr, heigh - hr);
            px -= wr;
            py -= hr;
        }
        if (readytochange == 2) {
            this.setBounds(posx + wr, posy, width - wr, heigh + hr);
            px -= wr;
        }
        if (readytochange == 3) {
            this.setBounds(posx, posy, width + wr, heigh + hr);
        }
        if (readytochange == 4) {
            this.setBounds(posx, posy + hr, width + wr, heigh - hr);
            py -= hr;
        }
    }

    private void Action() {
        final EditBox self = this;
        this.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mousePressed(java.awt.event.MouseEvent e) {
                if (isEditable) {
                    px = e.getX();
                    py = e.getY();
                    isRTC();
                }
            }

        });
        this.addMouseMotionListener(new java.awt.event.MouseMotionAdapter() {
            public void mouseDragged(java.awt.event.MouseEvent e) {
                if (isEditable) {
                    if (readytochange != 0) {
                        changeBox(e.getX(), e.getY());
                    } else {
                        int x = e.getX() + self.getX() - px, y = e.getY()
                                + self.getY() - py, width = self.getWidth(), heigh = self
                                .getHeight();
                        self.setBounds(x, y, width, heigh);
                    }
                    self.repaint();
                }
            }

            public void mouseMoved(java.awt.event.MouseEvent e) {
                if (isEditable) {
                    px = e.getX();
                    py = e.getY();
                    isRTC();
                }
            }
        });
    }

    @Override
    public int getValueId() {
        // TODO Auto-generated method stub
        return valueId;
    }

    @Override
    public String getValueName() {
        // TODO Auto-generated method stub
        return valueName;
    }

    @Override
    public void setValueName(String valueName) {
        // TODO Auto-generated method stub
        this.valueName = valueName;
        if(e!=null) e.Change();
    }
    @Override
    public void setColor(int color) {
        this.color = color;
        this.repaint();
    }

    public int getColor() {
        return color;
    }
    @Override
    public void setValueEditable(boolean isEditable) {
        // TODO Auto-generated method stub
        this.isEditable = isEditable;
        this.repaint();
    }

    @Override
    public ValueAttribute menuAdd() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public ValueAttribute menuDel() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public ValueAttribute menuEdit() {
        // TODO Auto-generated method stub
        EBDialog dia=new EBDialog();
        dia.setEditBox(this);
        return this;
    }

}