水平日曆

Question

我對Java仍然很陌生，並且作爲一個整體編碼，所以請原諒我的新問題。

我想製作一個日曆，除了在正常的6 x 7佈局等，而不是在一個正常的6 x 7佈局等。

這是我到目前爲止。我試圖改變列和行以及框架寬度，但是我無法以水平方式正確顯示窗格。

任何幫助表示讚賞。

package Calendar_Test; 

/*Contents of CalendarProgran.class */ 
//Import packages 
import java.awt.*; 
import java.awt.event.*; 
import java.util.*; 
import javax.swing.*; 
import javax.swing.table.*; 

public class Test_Code { 

    static JLabel lblMonth, lblYear; 
    static JButton btnPrev, btnNext; 
    static JTable tblCalendar; 
    static JComboBox<String> cmbYear; 
    static JFrame frmMain; 
    static Container pane; 
    static DefaultTableModel mtblCalendar; //Table model 
    static JScrollPane stblCalendar; //The scrollpane 
    static JPanel pnlCalendar; 
    static int realYear, realMonth, realDay, currentYear, currentMonth; 

    public static void main(String args[]) { 
     //Look and feel 
     try { 
      UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); 
     } catch (ClassNotFoundException e) { 
     } catch (InstantiationException e) { 
     } catch (IllegalAccessException e) { 
     } catch (UnsupportedLookAndFeelException e) { 
     } 

     //Prepare frame 
     frmMain = new JFrame("Key Dates Timeline"); //Create frame 
     frmMain.setSize(330, 375); //Set size to 400x400 pixels 
     pane = frmMain.getContentPane(); //Get content pane 
     pane.setLayout(null); //Apply null layout 
     frmMain.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //Close when X is clicked 

     //Create controls 
     lblMonth = new JLabel("January"); 
     lblYear = new JLabel("Change year:"); 
     cmbYear = new JComboBox<String>(); 
     btnPrev = new JButton("<<"); 
     btnNext = new JButton(">>"); 
     mtblCalendar = new DefaultTableModel() { 

      /** 
      * 
      */ 
      private static final long serialVersionUID = 1L; 

      public boolean isCellEditable(int rowIndex, int mColIndex) { 
       return false; 
      } 
     }; 
     tblCalendar = new JTable(mtblCalendar); 
     stblCalendar = new JScrollPane(tblCalendar); 
     pnlCalendar = new JPanel(null); 

     //Set border 
     pnlCalendar.setBorder(BorderFactory.createTitledBorder("Calendar")); 

     //Register action listeners 
     btnPrev.addActionListener(new btnPrev_Action()); 
     btnNext.addActionListener(new btnNext_Action()); 
     cmbYear.addActionListener(new cmbYear_Action()); 

     //Add controls to pane 
     pane.add(pnlCalendar); 
     pnlCalendar.add(lblMonth); 
     pnlCalendar.add(lblYear); 
     pnlCalendar.add(cmbYear); 
     pnlCalendar.add(btnPrev); 
     pnlCalendar.add(btnNext); 
     pnlCalendar.add(stblCalendar); 

     //Set bounds 
     pnlCalendar.setBounds(0, 0, 320, 335); 
     lblMonth.setBounds(160 - lblMonth.getPreferredSize().width/2, 25, 100, 25); 
     lblYear.setBounds(10, 305, 80, 20); 
     cmbYear.setBounds(230, 305, 80, 20); 
     btnPrev.setBounds(10, 25, 50, 25); 
     btnNext.setBounds(260, 25, 50, 25); 
     stblCalendar.setBounds(10, 50, 300, 250); 

     //Make frame visible 
     frmMain.setResizable(false); 
     frmMain.setVisible(true); 

     //Get real month/year 
     GregorianCalendar cal = new GregorianCalendar(); //Create calendar 
     realDay = cal.get(GregorianCalendar.DAY_OF_MONTH); //Get day 
     realMonth = cal.get(GregorianCalendar.MONTH); //Get month 
     realYear = cal.get(GregorianCalendar.YEAR); //Get year 
     currentMonth = realMonth; //Match month and year 
     currentYear = realYear; 

     //Add headers 
     String[] headers = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}; //All headers 
     for (int i = 0; i < 7; i++) { 
      mtblCalendar.addColumn(headers[i]); 
     } 

     tblCalendar.getParent().setBackground(tblCalendar.getBackground()); //Set background 

     //No resize/reorder 
     tblCalendar.getTableHeader().setResizingAllowed(false); 
     tblCalendar.getTableHeader().setReorderingAllowed(false); 

     //Single cell selection 
     tblCalendar.setColumnSelectionAllowed(true); 
     tblCalendar.setRowSelectionAllowed(true); 
     tblCalendar.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); 

     //Set row/column count 
     tblCalendar.setRowHeight(38); 
     mtblCalendar.setColumnCount(7); 
     mtblCalendar.setRowCount(6); 

     //Populate table 
     for (int i = realYear - 100; i <= realYear + 100; i++) { 
      cmbYear.addItem(String.valueOf(i)); 
     } 

     //Refresh calendar 
     refreshCalendar(realMonth, realYear); //Refresh calendar 
    } 

    public static void refreshCalendar(int month, int year) { 
     //Variables 
     String[] months = { 
      "January", "February", "March", "April", "May", "June", "July", 
      "August", "September", "October", "November", "December"}; 
     int nod, som; //Number Of Days, Start Of Month 

     //Allow/disallow buttons 
     btnPrev.setEnabled(true); 
     btnNext.setEnabled(true); 
     if (month == 0 && year <= realYear - 10) { 
      btnPrev.setEnabled(false); 
     } //Too early 
     if (month == 11 && year >= realYear + 100) { 
      btnNext.setEnabled(false); 
     } //Too late 
     lblMonth.setText(months[month]); //Refresh the month label (at the top) 
     lblMonth.setBounds(160 - lblMonth.getPreferredSize().width/2, 25, 180, 25); //Re-align label with calendar 
     cmbYear.setSelectedItem(String.valueOf(year)); //Select the correct year in the combo box 

     //Clear table 
     for (int i = 0; i < 6; i++) { 
      for (int j = 0; j < 7; j++) { 
       mtblCalendar.setValueAt(null, i, j); 
      } 
     } 

     //Get first day of month and number of days 
     GregorianCalendar cal = new GregorianCalendar(year, month, 1); 
     nod = cal.getActualMaximum(GregorianCalendar.DAY_OF_MONTH); 
     som = cal.get(GregorianCalendar.DAY_OF_WEEK); 

     //Draw calendar 
     for (int i = 1; i <= nod; i++) { 
      int row = new Integer((i + som - 2)/7); 
      int column = (i + som - 2) % 7; 
      mtblCalendar.setValueAt(i, row, column); 
     } 

     //Apply renderers 
     tblCalendar.setDefaultRenderer(tblCalendar.getColumnClass(0), new tblCalendarRenderer()); 
    } 

    static class tblCalendarRenderer extends DefaultTableCellRenderer { 

     /** 
     * 
     */ 
     private static final long serialVersionUID = 1L; 

     public Component getTableCellRendererComponent(JTable table, Object 
      value, boolean selected, boolean focused, int row, int column) { 
      super.getTableCellRendererComponent(
       table, value, selected, focused, row, column); 
      if (column == 0 || column == 6) { //Week-end 
       setBackground(new Color(255, 220, 220)); 
      } else { //Week 
       setBackground(new Color(255, 255, 255)); 
      } 
      if (value != null) { 
       if (Integer.parseInt(value.toString()) == realDay 
        && currentMonth == realMonth && currentYear == realYear) { //Today 
        setBackground(new Color(220, 220, 255)); 
       } 
      } 
      setBorder(null); 
      setForeground(Color.black); 
      return this; 
     } 
    } 

    static class btnPrev_Action implements ActionListener { 

     public void actionPerformed(ActionEvent e) { 
      if (currentMonth == 0) { //Back one year 
       currentMonth = 11; 
       currentYear -= 1; 
      } else { //Back one month 
       currentMonth -= 1; 
      } 
      refreshCalendar(currentMonth, currentYear); 
     } 
    } 

    static class btnNext_Action implements ActionListener { 

     public void actionPerformed(ActionEvent e) { 
      if (currentMonth == 11) { //Foward one year 
       currentMonth = 0; 
       currentYear += 1; 
      } else { //Foward one month 
       currentMonth += 1; 
      } 
      refreshCalendar(currentMonth, currentYear); 
     } 
    } 

    static class cmbYear_Action implements ActionListener { 

     public void actionPerformed(ActionEvent e) { 
      if (cmbYear.getSelectedItem() != null) { 
       String b = cmbYear.getSelectedItem().toString(); 
       currentYear = Integer.parseInt(b); 
       refreshCalendar(currentMonth, currentYear); 
      } 
     } 
    } 
} 

Answer 1

如果您使用了4x3的GridLayout（每年的季度一行）與包含嵌套6X7 GridLayout的每個單元（持有天/月的頭銜，我認爲它會運行得更好。你能值甚至去嵌套這些都在一些其他的容器內，以保持你的按鈕和whatnot

正如MadProgrammer指出，如果你使用空的佈局，並改變字體，框架大小等事情將走向不穩定，快速

Answer 2

你的要求是非常基本的，鑑於你已經在使用JTable你只需要提供一個新TableModel到視圖....

現在，這種大規模簡單，但這個概念應該讓你開始...

public class CalendarTableModel extends AbstractTableModel { 

    private Calendar cal; 

    public CalendarTableModel() { 
     this(new Date()); 
    } 

    public CalendarTableModel(Date date) { 
     setMonthByDate(date); 
    } 

    public void setMonthByDate(Date date) { 

     cal = Calendar.getInstance(); 
     cal.setTime(date); 
     cal.set(Calendar.DAY_OF_MONTH, 1); 

     fireTableStructureChanged(); 

    } 

    @Override 
    public String getColumnName(int column) { 

     String name = null; 

     if (cal != null) { 

      Calendar tmp = Calendar.getInstance(); 
      tmp.setTime(cal.getTime()); 
      tmp.set(Calendar.DAY_OF_MONTH, column + 1); 

      int date = tmp.get(Calendar.DAY_OF_MONTH); 
      int dow = tmp.get(Calendar.DAY_OF_WEEK); 

      switch (dow) { 

       case Calendar.MONDAY: 
        name = "Mon"; 
        break; 
       case Calendar.TUESDAY: 
        name = "Tue"; 
        break; 
       case Calendar.WEDNESDAY: 
        name = "Wed"; 
        break; 
       case Calendar.THURSDAY: 
        name = "Thr"; 
        break; 
       case Calendar.FRIDAY: 
        name = "Fri"; 
        break; 
       case Calendar.SATURDAY: 
        name = "Sat"; 
        break; 
       case Calendar.SUNDAY: 
        name = "Sun"; 
        break; 

      } 

      name += " " + date; 

     } 

     return name; 

    } 

    @Override 
    public int getRowCount() { 
     return 10; 
    } 

    @Override 
    public int getColumnCount() { 

     return cal == null ? 0 : cal.getMaximum(Calendar.DAY_OF_MONTH); 

    } 

    @Override 
    public Object getValueAt(int rowIndex, int columnIndex) { 

     return null; 

    } 

}