/// <summary>
/// Performs size and positioning layout for the control
/// </summary>
/// <param name="startDate"></param>
private void LayoutYearMonths(DateTime startDate)
{
Size size = GetPreferredSize(startDate);
if (size.Width > 0 && size.Height > 0)
{
int maxCols = Math.Max(1, (ClientRect.Width - 1) / size.Width);
int maxRows = Math.Max(1, (ClientRect.Height - 1) / size.Height);
int targetCols = (int)Math.Ceiling(Math.Sqrt(_NumberOfMonths));
if (targetCols >= maxCols)
{
targetCols = maxCols;
}
else
{
while (targetCols < maxCols)
{
int targetRows =
Math.Max(1, (_NumberOfMonths + targetCols - 1) / targetCols);
if (targetRows <= maxRows)
break;
targetCols++;
}
}
_NumberOfRows = Math.Max(1, (_NumberOfMonths + targetCols - 1) / targetCols);
_NumberOfCols = (_NumberOfMonths + _NumberOfRows - 1) / _NumberOfRows;
int monthHeight = (ClientRect.Height - 1) / _NumberOfRows;
int monthWidth = (ClientRect.Width - 1) / _NumberOfCols;
int rowSpread = 0;
if (monthHeight < size.Height)
monthHeight = size.Height;
else
rowSpread = ClientRect.Height - (_NumberOfRows * monthHeight) - 1;
int colSpread = 0;
if (monthWidth < size.Width)
monthWidth = size.Width;
else
colSpread = ClientRect.Width - (_NumberOfCols * monthWidth) - 1;
// Loop through each week
int n = 0;
DateTime date = startDate;
Rectangle r = new Rectangle(ClientRect.X, ClientRect.Y, monthWidth, monthHeight);
r.Y += _VScrollPos;
for (int i = 0; i < _NumberOfRows; i++)
{
if (i < rowSpread)
r.Height++;
for (int j = 0; j < _NumberOfCols; j++)
{
if (n >= _NumberOfMonths)
break;
if (_YearMonths[n] == null)
_YearMonths[n] = new YearMonth(this, date);
else
_YearMonths[n].StartDate = date;
// Calculate the bounding rect limits
r.Width = monthWidth;
if (j < colSpread)
r.Width++;
// Set the bounding rect
_YearMonths[n].Bounds = r;
r.X += r.Width;
n++;
date = date.AddMonths(1);
}
r.X = ClientRect.X;
r.Y += r.Height;
r.Height = monthHeight;
}
CalendarView.YearViewMax = (r.Y - (ClientRect.Y + _VScrollPos));
}
}
/// <summary>
/// Gets the preferred size of the control
/// </summary>
/// <param name="startDate"></param>
/// <returns></returns>
private Size GetPreferredSize(DateTime startDate)
{
if (_PreferredSize.IsEmpty)
{
if (_YearMonths[0] == null)
_YearMonths[0] = new YearMonth(this, startDate);
_PreferredSize = _YearMonths[0].GetPreferredSize();
}
return (_PreferredSize);
}
/// <summary>
/// UpdateCustomItems
/// </summary>
/// <param name="yearMonth"></param>
private void UpdateCustomItems(YearMonth yearMonth)
{
CustomCalendarItemCollection items = _View.CalendarView.CustomItems;
if (items != null && items.Count > 0)
{
for (int i = 0; i < items.Count; i++)
{
CustomCalendarItem item = items[i];
if (IsCustomItemVisible(item) == true &&
(item.StartTime.Year == yearMonth.StartDate.Year && item.StartTime.Month == yearMonth.StartDate.Month))
{
yearMonth.AppBits.Set(item.StartTime.Day - 1, true);
break;
}
}
}
}