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/* * 系统名称： * 模块名称： * 描述： * 作者：徐骏 * version 1.0 * time 2010-11-5 下午01:07:14 * copyright Anymusic Ltd. */ package xujun.keepaccount.calendar; import java.util.Calendar; import xujun.keepaccount.R; import android.content.Context; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.PaintFlagsDrawFilter; import android.graphics.Rect; import android.graphics.RectF; import android.graphics.Paint.Align; import android.util.AttributeSet; import android.view.GestureDetector; import android.view.MotionEvent; import android.view.View; import android.view.GestureDetector.SimpleOnGestureListener; import android.view.View.OnTouchListener; import android.widget.Toast; /** * @author 徐骏 * @data 2010-11-5 */ public class CalendarWidget extends View implements OnTouchListener { private Context context; private Paint paint = new Paint(); private RectF borderRect; private Rect canlendarRect; private Rect dayCellContextRect; private CalendarHeader header; private DayCell[] dayCells = new DayCell[42]; private Calendar calendar = Calendar.getInstance(); private Calendar todayCalendar = Calendar.getInstance(); private DayCell curDayCell; private int moveX =0;//X方向上在onScroll中的移动像素 private GestureDetector detector;//手势运动委托器 private CalendarAction gestureAction ; private OnCalendarSelectedListenter calendarSelectedListenter; public CalendarWidget(Context context) { super(context,null); } public CalendarWidget(Context context, AttributeSet attrs) { super(context, attrs); init(context); } private void init(Context context) { this.context = context; gestureAction = CalendarAction.CALENDAR_DEFAULT; setOnTouchListener(this); detector = new GestureDetector(context,new MyGestureListener()); setLongClickable(true);//这样才能启动Gesture [dʒestʃə] header = new CalendarHeader(this.context); for(int i=0;i<42;i++) { dayCells[i] = new DayCell(); } setCalendar(); } private void setCalendar() { //先清除状态 for(int i=0;i<42;i++) { dayCells[i].clearState(); } //根据日期设置DayCell //设置日历是本月1号 calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), 1); //获得本月有多少天 int maxday = calendar.getActualMaximum(Calendar.DATE); //第一天是星期几 int dayofweek = calendar.get(Calendar.DAY_OF_WEEK)-1; for(int i=dayofweek;i<maxday+dayofweek;i++) { int day = calendar.get(Calendar.DATE); dayCells[i].setText(""+day); //今天 （年月日三者相等 小时毫秒这些不比较） if(todayCalendar.get(Calendar.YEAR) == calendar.get(Calendar.YEAR) &&todayCalendar.get(Calendar.MONTH) == calendar.get(Calendar.MONTH) &&todayCalendar.get(Calendar.DATE) == calendar.get(Calendar.DATE)) { dayCells[i].setToday(true); } //周六 if(calendar.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY) { dayCells[i].setFontColor(context.getResources().getColor(R.color.canlendar_week_6)); } //周日 if(calendar.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY) { dayCells[i].setFontColor(context.getResources().getColor(R.color.canlendar_week_7)); } //设置值 dayCells[i].setYear(calendar.get(Calendar.YEAR)); dayCells[i].setMonth(calendar.get(Calendar.MONTH)); dayCells[i].setDay(calendar.get(Calendar.DATE)); //+1天，注意运行到最后，就是第二个月的第一天了。 calendar.add(Calendar.DATE, 1); } //最后要重新设置为本月的第一天，这样为了滑动作准备 calendar.add(Calendar.MONTH, -1); } @Override public boolean onTouch(View arg0, MotionEvent e) { detector.onTouchEvent(e); if(e.getAction() == MotionEvent.ACTION_UP) { if(gestureAction == CalendarAction.CALENDAR_RIGHT) { moveX = 0; calendar.add(Calendar.MONTH, -1); setCalendar(); anycInvalidate(); } if(gestureAction == CalendarAction.CALENDAR_LEFT) { moveX = 0; calendar.add(Calendar.MONTH, 1); setCalendar(); anycInvalidate(); } if(gestureAction == CalendarAction.CALENDAR_NONE) { moveX = 0; setCalendar(); anycInvalidate(); } //转发事件 if(gestureAction == CalendarAction.CALENDAR_TOUCH) { if(calendarSelectedListenter != null) { calendarSelectedListenter.onSelected(curDayCell.getYear(), curDayCell.getMonth(), curDayCell.getDay()); } } gestureAction = CalendarAction.CALENDAR_DEFAULT;// 清除状态 } return false; } private void anycInvalidate() { new Thread(new Runnable(){ @Override public void run() { postInvalidate(); } }).start(); } @Override public void onDraw(Canvas canvas) { compute(); canvas.setDrawFilter(new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG)); // drawBorder(canvas); drawTitle(canvas); header.drawWeekHeader(canvas,canlendarRect); drawDayCells(canvas); } private void drawDayCells(Canvas canvas) { for (DayCell cell:dayCells) { cell.drawDay(canvas); } } private void drawBorder(Canvas canvas) { paint.setColor(context.getResources().getColor(R.color.canlendar_border)); paint.setStyle(Paint.Style.STROKE); paint.setStrokeWidth(3); canvas.drawRoundRect(borderRect, 10, 10, paint); } private void compute() { //Stroke宽度为3，留白1，这样就空4出来 borderRect = new RectF(4,4,getWidth()-4,getHeight()-4); canlendarRect = new Rect(moveX+14,24,getWidth()+moveX-14,getHeight()-14); header.setHeaderRect(canlendarRect); dayCellContextRect = header.computeDayCellRect(); //计算每个Cell的高和宽 int cellWidth = dayCellContextRect.width() / 7; int cellHeight = dayCellContextRect.height()/6;//最多6行 int startX = dayCellContextRect.left; int startY = dayCellContextRect.top; int colIndex = 1; for(int i=0;i<42;i++) { Rect rect = new Rect(startX,startY,startX+cellWidth,startY+cellHeight); //7个一行 if(colIndex % 7 != 0) { startX = startX+cellWidth; } //换行，Y下移一个cell的高度，X回到起点 else { startX = dayCellContextRect.left; startY = startY+cellHeight; } colIndex++; DayCell dayCell = dayCells[i]; dayCell.setRect(rect); } } private void drawTitle(Canvas canvas) { paint.setStyle(Paint.Style.FILL); paint.setTextSize(15); paint.setFakeBoldText(true);//伪粗体，中文使用 paint.setTextAlign(Align.CENTER); paint.setColor(context.getResources().getColor(R.color.canlendar_header)); int month = calendar.get(Calendar.MONTH)+1; canvas.drawText(calendar.get(Calendar.YEAR)+"年"+month+"月", canlendarRect.left+canlendarRect.width() / 2, canlendarRect.top-4 , paint); } class MyGestureListener extends SimpleOnGestureListener { //用户按下触摸屏，尚未松开或拖动，由一个MotionEvent.ACTION_DOWN触发. //注意和onDown的区别，强调的是没有松开或者拖动的状态 @Override public void onShowPress(MotionEvent arg0) { super.onShowPress(arg0); } //用户按下触摸屏，由一个MotionEvent.ACTION_DOWN触发 @Override public boolean onDown(MotionEvent e) { //只增加背景，不触发处理 for(final DayCell cell : dayCells) { if(cell.isClicked((int)e.getX(), (int)e.getY()) && cell.getText() != null) { if(curDayCell != null) { curDayCell.setSelected(false); //更新局部，提高性能 CalendarWidget.this.invalidate(curDayCell.getRect().left, curDayCell.getRect().top, curDayCell.getRect().right, curDayCell.getRect().bottom); } cell.setSelected(true);