void RefreshDefinitely()
{
VM.Bars.Clear();
VM.Days.Clear();
VM.MonthNames.Clear();
//get highlight tasks
var boxes = Globals.BoxCache.GetAgenda().Where(ae => ae.Box.Visibility == Constants.VISIBILITY_HIGHLIGHT).ToArray();
//start and end dates - show at least 6 months, and at least 1 month after last highlight start
DateTime dStart = DateTime.Today;
dStart = dStart.AddDays(0 - (int)dStart.DayOfWeek); //go to sunday
DateTime dEnd = dStart.AddMonths(6);
if (boxes.Any())
{
DateTime lastBoxTime = DateUtil.ToDateTime(boxes.Last().Box.BoxTime) ?? dStart;
lastBoxTime = lastBoxTime.AddMonths(1);
if (lastBoxTime > dEnd)
{
dEnd = lastBoxTime.Date;
}
}
dEnd = dEnd.AddDays(6 - (int)dEnd.DayOfWeek); //go to sunday
//create day cells and month names
var days = new List <CalendarVM.CellVM>(300);
var months = new List <CalendarVM.LabelVM>(10);
int lastShownMonthNo = dStart.Month;
int dow = -1, maxWeekNo = 0;
double dayWidth = Width / 8;
for (DateTime d = dStart; d <= dEnd; d = d.AddDays(1))
{
if (++dow == 7)
{
dow = 0; ++maxWeekNo;
}
if (d.Month != lastShownMonthNo)
{
lastShownMonthNo = d.Month;
months.Add(new CalendarVM.LabelVM
{
Left = 0,
Top = WEEKHEIGHT * maxWeekNo + 20,
Text = d.ToString("MMM")
});
}
days.Add(new CalendarVM.CellVM
{
Top = WEEKHEIGHT * maxWeekNo,
Height = WEEKHEIGHT,
Left = (int)(dayWidth * (dow + 1)),
Width = (int)dayWidth,
Text = d.Day.ToString()
});
}
VM.Days.AddRange(days);
VM.MonthNames.AddRange(months);
VM.CanvasHeight = (maxWeekNo + 1) * WEEKHEIGHT;
//create bars
var bars = new List <CalendarVM.BarVM>();
foreach (var box in boxes)
{
DateTime?d0 = DateUtil.ToDateTime(box.Time);
if (d0 == null)
{
continue;
}
DateTime d1 = DateUtil.AddDuration(d0.Value, box.Box.Duration);
double totalDays0 = d0.Value.Subtract(dStart).TotalDays; //from calendar beginning, can be negative
double totalDays1 = d1.Subtract(dStart).TotalDays;
int weekNo0 = (int)totalDays0 / 7;
int weekNo1 = (int)totalDays1 / 7;
double dow0 = totalDays0 % 7, dow1 = totalDays1 % 7; //for example 1.5 means mid-monday
for (int weekNo = weekNo0; weekNo <= weekNo1; ++weekNo)
{
if (weekNo < 0 || weekNo > maxWeekNo)
{
continue;
}
double left = dayWidth, width = dayWidth * 7; //defaults for intermediate rows
if (weekNo == weekNo0) //block for first/only row
{
left = Math.Max(dayWidth, dayWidth * (1 + dow0));
double right = (weekNo == weekNo1) ? dayWidth * (1 + dow1) : dayWidth * 8;
width = Math.Min(width, right - left);
}
else if (weekNo == weekNo1) //block only used for last row when there are multiple rows
{
left = dayWidth;
width = dayWidth * dow1;
}
bars.Add(new CalendarVM.BarVM
{
RowId = box.Box.RowId,
Background = UIGlobals.HIGHLIGHT_COLORS[box.HighlightColor],
Text = box.Box.Title,
Height = BARHEIGHT,
Top = (WEEKHEIGHT * weekNo) + (BARHEIGHT * box.HighlightColor),
Left = (int)left,
Width = (int)width
});
}
}
VM.Bars.AddRange(bars);
}