Java 日期选择器课件

1、Java 日期选择器效果如图：import java.awt.BasicStroke;import java.awt.BorderLayout;import java.awt.Color;import java.awt.Component;import java.awt.Cursor;import java.awt.Dimension;import java.awt.Font;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.GridLayout;import java.awt.Point;import ja

2、va.awt.Polygon;import java.awt.Stroke;import java.awt.Toolkit;import java.awt.event.FocusEvent;import java.awt.event.FocusListener;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent;import java.awt.event.MouseListener;import java.awt.event.MouseMotionListener;import java.text.Simple

3、DateFormat;import java.util.ArrayList;import java.util.Calendar;import java.util.Comparator;import java.util.Date;import java.util.List;import javax.swing.BorderFactory;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.Popup;i

4、mport javax.swing.PopupFactory;import javax.swing.SwingUtilities;import javax.swing.event.AncestorEvent;import javax.swing.event.AncestorListener;public class DateChooser extends JPanelprivate Date initDate;private Calendar now=Calendar.getInstance();private Calendar select;private JPanel monthPanel

5、;/月历private JP1 jp1;/四块面板,组成private JP2 jp2;private JP3 jp3;private JP4 jp4;private Font font=new Font(宋体,Font.PLAIN,12);private final LabelManager lm=new LabelManager();private JLabel showDate;/,toSelect;private SimpleDateFormat sdf=new SimpleDateFormat(yyyy年MM月dd日);private boolean isShow=false;pri

6、vate Popup pop;public DateChooser() this(new Date();public DateChooser(Date date)initDate=date;select=Calendar.getInstance();select.setTime(initDate);initPanel();initLabel();public void setEnabled(boolean b)super.setEnabled(b);showDate.setEnabled(b);public Date getDate()return select.getTime();/根据初始

7、化的日期,初始化面板private void initPanel()monthPanel=new JPanel(new BorderLayout();monthPanel.setBorder(BorderFactory.createLineBorder(Color.BLUE);JPanel up=new JPanel(new BorderLayout();up.add(jp1=new JP1(),BorderLayout.NORTH);up.add(jp2=new JP2(),BorderLayout.CENTER);monthPanel.add(jp3=new JP3(),BorderLay

8、out.CENTER);monthPanel.add(up,BorderLayout.NORTH);monthPanel.add(jp4=new JP4(),BorderLayout.SOUTH);this.addAncestorListener(new AncestorListener()public void ancestorAdded(AncestorEvent event) public void ancestorRemoved(AncestorEvent event) /只要祖先组件一移动,马上就让popup消失public void ancestorMoved(AncestorEv

9、ent event) hidePanel(););/初始化标签private void initLabel()showDate=new JLabel(sdf.format(initDate);showDate.setRequestFocusEnabled(true);showDate.addMouseListener(new MouseAdapter()public void mousePressed(MouseEvent me)showDate.requestFocusInWindow(););/toSelect=new JLabel(sdf.format(initDate);/toSele

10、ct.setBorder(BorderFactory.createLineBorder(Color.BLACK);/toSelect.setRequestFocusEnabled(true);this.setBackground(Color.WHITE);this.add(showDate,BorderLayout.CENTER);/this.add(toSelect,BorderLayout.EAST);this.setPreferredSize(new Dimension(90,25);this.setBorder(BorderFactory.createLineBorder(Color.

11、GRAY);showDate.addMouseListener(new MouseAdapter()public void mouseEntered(MouseEvent me)if(showDate.isEnabled()showDate.setCursor(new Cursor(Cursor.HAND_CURSOR);showDate.setForeground(Color.RED);public void mouseExited(MouseEvent me)if(showDate.isEnabled()showDate.setCursor(new Cursor(Cursor.DEFAUL

12、T_CURSOR);showDate.setForeground(Color.BLACK);public void mousePressed(MouseEvent me)if(showDate.isEnabled()showDate.setForeground(Color.CYAN);if(isShow)hidePanel();elseshowPanel(showDate);public void mouseReleased(MouseEvent me)if(showDate.isEnabled()showDate.setForeground(Color.BLACK););showDate.a

13、ddFocusListener(new FocusListener()public void focusLost(FocusEvent e)hidePanel();public void focusGained(FocusEvent e);/根据新的日期刷新private void refresh()jp1.updateDate();jp3.updateDate();SwingUtilities.updateComponentTreeUI(this);/提交日期private void commit()System.out.println(选中的日期是：+sdf.format(select.g

14、etTime();showDate.setText(sdf.format(select.getTime();hidePanel();private void hidePanel()if(pop!=null)isShow=false;pop.hide();pop=null;private void showPanel(Component owner)if(pop!=null)pop.hide();Point show=new Point(0,showDate.getHeight();SwingUtilities.convertPointToScreen(show,showDate);Dimens

15、ion size=Toolkit.getDefaultToolkit().getScreenSize();int x=show.x;int y=show.y;if(xsize.width-295)x=size.width-295;if(yelsey-=188;pop=PopupFactory.getSharedInstance().getPopup(owner,monthPanel,x,y);pop.show();isShow=true;private class JP1 extends JPanelJLabel left,right,center;public JP1()super(new

16、BorderLayout();this.setBackground(new Color(160,185,215);initJP1();private void initJP1()left=new JLabel( ,JLabel.CENTER);right.setToolTipText(下一月);left.setBorder(BorderFactory.createEmptyBorder(10,0,0,0);right.setBorder(BorderFactory.createEmptyBorder(10,0,0,0);center=new JLabel(,JLabel.CENTER);upd

17、ateDate();this.add(left,BorderLayout.WEST);this.add(center,BorderLayout.CENTER);this.add(right,BorderLayout.EAST);this.setPreferredSize(new Dimension(295,25);left.addMouseListener(new MouseAdapter()public void mouseEntered(MouseEvent me)left.setCursor(new Cursor(Cursor.HAND_CURSOR);left.setForegroun

18、d(Color.RED);public void mouseExited(MouseEvent me)left.setCursor(new Cursor(Cursor.DEFAULT_CURSOR);left.setForeground(Color.BLACK);public void mousePressed(MouseEvent me)select.add(Calendar.MONTH,-1);left.setForeground(Color.WHITE);refresh();public void mouseReleased(MouseEvent me)left.setForegroun

19、d(Color.BLACK););right.addMouseListener(new MouseAdapter()public void mouseEntered(MouseEvent me)right.setCursor(new Cursor(Cursor.HAND_CURSOR);right.setForeground(Color.RED);public void mouseExited(MouseEvent me)right.setCursor(new Cursor(Cursor.DEFAULT_CURSOR);right.setForeground(Color.BLACK);publ

20、ic void mousePressed(MouseEvent me)select.add(Calendar.MONTH,1);right.setForeground(Color.WHITE);refresh();public void mouseReleased(MouseEvent me)right.setForeground(Color.BLACK););private void updateDate()center.setText(select.get(Calendar.YEAR)+年+(select.get(Calendar.MONTH)+1)+月);private class JP

21、2 extends JPanelpublic JP2()this.setPreferredSize(new Dimension(295,20);protected void paintComponent(Graphics g)g.setFont(font);g.drawString(星期日 星期一 星期二 星期三 星期四 星期五 星期六,5,10);g.drawLine(0,15,getWidth(),15);private class JP3 extends JPanelpublic JP3()super(new GridLayout(6,7);this.setPreferredSize(n

22、ew Dimension(295,100);initJP3();private void initJP3()updateDate();public void updateDate()this.removeAll();lm.clear();Date temp=select.getTime();Calendar select=Calendar.getInstance();select.setTime(temp);select.set(Calendar.DAY_OF_MONTH,1);int index=select.get(Calendar.DAY_OF_WEEK);int sum=(index=

23、1?8:index);select.add(Calendar.DAY_OF_MONTH,0-sum);for(int i=0;i42;i+)select.add(Calendar.DAY_OF_MONTH,1);lm.addLabel(new MyLabel(select.get(Calendar.YEAR),select.get(Calendar.MONTH),select.get(Calendar.DAY_OF_MONTH);for(MyLabel my:lm.getLabels()this.add(my);select.setTime(temp);private class MyLabe

24、l extends JLabel implements Comparator,MouseListener,MouseMotionListenerprivate int year,month,day;private boolean isSelected;public MyLabel(int year,int month,int day)super(+day,JLabel.CENTER);this.year=year;this.day=day;this.month=month;this.addMouseListener(this);this.addMouseMotionListener(this)

25、;this.setFont(font);if(month=select.get(Calendar.MONTH)this.setForeground(Color.BLACK);elsethis.setForeground(Color.LIGHT_GRAY);if(day=select.get(Calendar.DAY_OF_MONTH)this.setBackground(new Color(160,185,215);elsethis.setBackground(Color.WHITE);public boolean getIsSelected()return isSelected;public

26、 void setSelected(boolean b,boolean isDrag)isSelected=b;if(b&!isDrag)int temp=select.get(Calendar.MONTH);select.set(year,month,day);if(temp=month)SwingUtilities.updateComponentTreeUI(jp3);elserefresh();this.repaint();protected void paintComponent(Graphics g)if(day=select.get(Calendar.DAY_OF_MONTH)&m

27、onth=select.get(Calendar.MONTH)/如果当前日期是选择日期,则高亮显示g.setColor(new Color(160,185,215);g.fillRect(0,0,getWidth(),getHeight();if(year=now.get(Calendar.YEAR)&month=now.get(Calendar.MONTH)&day=now.get(Calendar.DAY_OF_MONTH)/如果日期和当前日期一样,则用红框Graphics2D gd=(Graphics2D)g;gd.setColor(Color.RED);Polygon p=new Po

28、lygon();p.addPoint(0,0);p.addPoint(getWidth()-1,0);p.addPoint(getWidth()-1,getHeight()-1);p.addPoint(0,getHeight()-1);gd.drawPolygon(p);if(isSelected)/如果被选中了就画出一个虚线框出来Stroke s=new BasicStroke(1.0f,BasicStroke.CAP_SQUARE,BasicStroke.JOIN_BEVEL,1.0f,new float2.0f,2.0f,1.0f);Graphics2D gd=(Graphics2D)g

29、;gd.setStroke(s);gd.setColor(Color.BLACK);Polygon p=new Polygon();p.addPoint(0,0);p.addPoint(getWidth()-1,0);p.addPoint(getWidth()-1,getHeight()-1);p.addPoint(0,getHeight()-1);gd.drawPolygon(p);super.paintComponent(g);public boolean contains(Point p)return this.getBounds().contains(p);private void u

30、pdate()repaint();public void mouseClicked(MouseEvent e) public void mousePressed(MouseEvent e) isSelected=true;update();public void mouseReleased(MouseEvent e) Point p=SwingUtilities.convertPoint(this,e.getPoint(),jp3);lm.setSelect(p,false);commit();public void mouseEntered(MouseEvent e) public void

31、 mouseExited(MouseEvent e) public void mouseDragged(MouseEvent e) Point p=SwingUtilities.convertPoint(this,e.getPoint(),jp3);lm.setSelect(p,true);public void mouseMoved(MouseEvent e) public int compare(MyLabel o1, MyLabel o2) Calendar c1=Calendar.getInstance();c1.set(o1.year,o2.month,o1.day);Calenda

32、r c2=Calendar.getInstance();c2.set(o2.year,o2.month,o2.day);return pareTo(c2);private class LabelManagerprivate List list;public LabelManager()list=new ArrayList();public List getLabels()return list;public void addLabel(MyLabel my)list.add(my);public void clear()list.clear();public void setSelect(My

33、Label my,boolean b)for(MyLabel m:list)if(m.equals(my)m.setSelected(true,b);elsem.setSelected(false,b);public void setSelect(Point p,boolean b)/如果是拖动,则要优化一下,以提高效率if(b)/表示是否能返回,不用比较完所有的标签,能返回的标志就是把上一个标签和/将要显示的标签找到了就可以了boolean findPrevious=false,findNext=false;for(MyLabel m:list)if(m.contains(p)findNext=true;if(m.getIsSelected()findPrevious=true;elsem.setSelected(true,b);else if(m.getIsSelected()findPrevious=true;m.setSelected(false,b);if(findPrevious&findNext)return;elseMyLabel temp=null;for(MyLabel m:list)if(m.contains(p)temp=m;else if(m.getIsSelected(