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package swt.jface.demo;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CLabel;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Dialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.events.MouseListener;
import org.eclipse.swt.events.MouseEvent;
/**
* SWT日历控件
* @author 中国顺天科技开发公司 E-mail:chinasts@gmail.com
* @version 1.00
*/
public class STCalendar extends Dialog implements MouseListener {
private Display display = null;
// 当前的日期
private Date nowDate = null;
// 用户选择的日期
private String selectedDate = null;
private Shell shell = null;
private GridLayout gridLayout = null;
private GridData gridData = null;
// 星期标签
private CLabel sunday = null;
private CLabel monday = null;
private CLabel tuesday = null;
private CLabel wednesday = null;
private CLabel thursday = null;
private CLabel friday = null;
private CLabel saturday = null;
// 切换按钮
private Button yearUp = null;
private Button yearNext = null;
private Button monthUp = null;
private Button monthNext = null;
private CLabel nowLabel = null;
private CLabel[] days = new CLabel[42];
public STCalendar(Shell parent, int style) {
super(parent, style);
}
public STCalendar(Shell parent) {
this(parent, 0);
}
/**
* 获取某年某月的最后一天
* @param year 年
* @param month 月
* @return 最后一天
*/
private int getLastDayOfMonth(int year, int month) {
if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8
|| month == 10 || month == 12) {
return 31;
}
if (month == 4 || month == 6 || month == 9 || month == 11) {
return 30;
}
if (month == 2) {
if (isLeapYear(year)) {
return 29;
} else {
return 28;
}
}
return 0;
}
/**
* 是否闰年
* @param year 年
* @return
*/
public boolean isLeapYear(int year) {
return (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);
}
private void moveTo(int type, int value) {
Calendar now = Calendar.getInstance();
now.setTime(nowDate);
now.add(type, value);
nowDate = new Date(now.getTimeInMillis());
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM");
nowLabel.setText(formatter.format(nowDate));
setDayForDisplay(now);
}
private void setDayForDisplay(Calendar now) {
int currentDay = now.get(Calendar.DATE);
now.add(Calendar.DAY_OF_MONTH, -(now.get(Calendar.DATE) - 1));
int startIndex = now.get(Calendar.DAY_OF_WEEK) - 1;
int year = now.get(Calendar.YEAR);
int month = now.get(Calendar.MONTH) + 1;
int lastDay = this.getLastDayOfMonth(year, month);
int endIndex = startIndex + lastDay - 1;
int startday = 1;
for (int i = 0; i < 42; i++) {
Color temp = days[i].getBackground();
if (temp.equals(display.getSystemColor(SWT.COLOR_BLUE))) {
days[i].setBackground(display.getSystemColor(SWT.COLOR_WHITE));
}
}
for (int i = 0; i < 42; i++) {
if (i >= startIndex && i <= endIndex) {
days[i].setText("" + startday);
if (startday == currentDay) {
days[i].setBackground(display
.getSystemColor(SWT.COLOR_BLUE));
}
startday++;
} else {
days[i].setText("");
}
}
}
public void previousYear() {
moveTo(Calendar.YEAR, -1);
}
public void nextYear() {
moveTo(Calendar.YEAR, 1);
}
public void nextMonth() {
moveTo(Calendar.MONTH, 1);
}
public void previousMonth() {
moveTo(Calendar.MONTH, -1);
}
public void mouseDoubleClick(MouseEvent e) {
CLabel day = (CLabel) e.getSource();
if (!day.getText().equals("")) {
this.selectedDate = nowLabel.getText() + "-" + day.getText();
this.shell.close();
}
}
public void mouseDown(MouseEvent e) {
}
public void mouseUp(MouseEvent e) {
}
/**
* 返回用户选择的年月日信息
* @return
*/
public Object open() {
Shell parent = getParent();
display = Display.getDefault();
shell = new Shell(parent, SWT.TITLE | SWT.PRIMARY_MODAL);
shell.setText("顺天科技 version 1.00");
shell.setSize(230, 220);
gridLayout = new GridLayout();
gridLayout.numColumns = 7;
shell.setLayout(gridLayout);
gridData = new GridData(GridData.FILL_HORIZONTAL);
yearUp = new Button(shell, SWT.PUSH | SWT.FLAT);
yearUp.setText("<");
yearUp.setLayoutData(gridData);
yearUp.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
previousYear();
}
});
gridData = new GridData(GridData.FILL_HORIZONTAL);
monthUp = new Button(shell, SWT.PUSH | SWT.FLAT);
monthUp.setText("<<");
monthUp.setLayoutData(gridData);
monthUp.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
previousMonth();
}
});
nowLabel = new CLabel(shell, SWT.CENTER | SWT.SHADOW_OUT);
gridData = new GridData(GridData.FILL_HORIZONTAL);
gridData.horizontalSpan = 3;
nowLabel.setLayoutData(gridData);
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM");
nowLabel.setText(formatter.format(new Date()));
gridData = new GridData(GridData.FILL_HORIZONTAL);
monthNext = new Button(shell, SWT.PUSH | SWT.FLAT);
monthNext.setText(">>");
monthNext.setLayoutData(gridData);
monthNext.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
nextMonth();
}
});
gridData = new GridData(GridData.FILL_HORIZONTAL);
yearNext = new Button(shell, SWT.PUSH | SWT.FLAT);
yearNext.setText(">");
yearNext.setLayoutData(gridData);
yearNext.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
nextYear();
}
});
sunday = new CLabel(shell, SWT.CENTER | SWT.SHADOW_OUT);
gridData = new GridData(GridData.FILL_HORIZONTAL
| GridData.FILL_VERTICAL);
gridData.widthHint = 70;
gridData.heightHint = 20;
sunday.setLayoutData(gridData);
sunday.setText("日");
monday = new CLabel(shell, SWT.CENTER | SWT.SHADOW_OUT);
gridData = new GridData(GridData.FILL_HORIZONTAL
| GridData.FILL_VERTICAL);
gridData.widthHint = 70;
gridData.heightHint = 20;
monday.setLayoutData(gridData);
monday.setText("一");
tuesday = new CLabel(shell, SWT.CENTER | SWT.SHADOW_OUT);
gridData = new GridData(GridData.FILL_HORIZONTAL
| GridData.FILL_VERTICAL);
gridData.widthHint = 70;
gridData.heightHint = 20;
tuesday.setLayoutData(gridData);
tuesday.setText("二");
wednesday = new CLabel(shell, SWT.CENTER | SWT.SHADOW_OUT);
gridData = new GridData(GridData.FILL_HORIZONTAL
| GridData.FILL_VERTICAL);
gridData.widthHint = 70;
gridData.heightHint = 20;
wednesday.setLayoutData(gridData);
wednesday.setText("三");
thursday = new CLabel(shell, SWT.CENTER | SWT.SHADOW_OUT);
gridData = new GridData(GridData.FILL_HORIZONTAL
| GridData.FILL_VERTICAL);
gridData.widthHint = 70;
gridData.heightHint = 20;
thursday.setLayoutData(gridData);
thursday.setText("四");
friday = new CLabel(shell, SWT.CENTER | SWT.SHADOW_OUT);
gridData = new GridData(GridData.FILL_HORIZONTAL
| GridData.FILL_VERTICAL);
gridData.widthHint = 70;
gridData.heightHint = 20;
friday.setLayoutData(gridData);
friday.setText("五");
saturday = new CLabel(shell, SWT.CENTER | SWT.SHADOW_OUT);
gridData = new GridData(GridData.FILL_HORIZONTAL
| GridData.FILL_VERTICAL);
gridData.widthHint = 70;
gridData.heightHint = 20;
saturday.setLayoutData(gridData);
saturday.setText("六");
for (int i = 0; i < 42; i++) {
days[i] = new CLabel(shell, SWT.FLAT | SWT.CENTER);
gridData = new GridData(GridData.FILL_HORIZONTAL
| GridData.FILL_VERTICAL);
days[i].setLayoutData(gridData);
days[i].setBackground(display.getSystemColor(SWT.COLOR_WHITE));
days[i].addMouseListener(this);
days[i].setToolTipText("双击返回.");
}
Calendar now = Calendar.getInstance();
nowDate = new Date(now.getTimeInMillis());
setDayForDisplay(now);
shell.open();
Display display = parent.getDisplay();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
return selectedDate;
}
/**
* @param args
*/
public static void main(String[] args) {
Display display = new Display();
final Shell shell = new Shell(display);
shell.setText("顺天科技日历");
FillLayout fl = new FillLayout();
shell.setLayout(fl);
Button open = new Button(shell, SWT.PUSH);
open.setText("日历");
open.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
STCalendar stc = new STCalendar(shell);
// 输出用户选择的年月日信息
System.out.println(stc.open());
}
});
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
}
} |
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发表于 2006-08-16 21:49
