private void ResetGraphics()
{
graphics.Clear(BackgroundColor);
graphics.TranslateTransform(this.autoScrollPosition.X, this.autoScrollPosition.Y);
DayXLocations.Clear();
TimeXLocations.Clear();
}
private void PopulateDateTimeXLocs(int startX, int endX)
{
int dayDivision = (int)Math.Round((double)(endX - startX) / (EndDate - StartDate).Days);
int dayXLoc = startX;
DateTime curDay = StartDate;
while (curDay < EndDate)
{
int dayStart = dayXLoc;
int dayEnd = dayXLoc + dayDivision;
int timeDivision = (int)Math.Round((double)(dayEnd - dayStart) / (EndHourInDay - StartHourInDay));
int xLoc = dayStart;
int curHour = StartHourInDay;
while (curHour <= EndHourInDay)
{
DateTime dateWithHour = curDay.AddHours(curHour);
if (curHour == StartHourInDay)
{
StringFormat startFormat = new StringFormat()
{
Alignment = StringAlignment.Near, LineAlignment = StringAlignment.Far
};
TimeXLocations.Add(new Tuple <DateTime, int, StringFormat>(dateWithHour, dayStart, startFormat));
}
else if (curHour == EndHourInDay)
{
StringFormat endFormat = new StringFormat()
{
Alignment = StringAlignment.Far, LineAlignment = StringAlignment.Far
};
TimeXLocations.Add(new Tuple <DateTime, int, StringFormat>(dateWithHour, dayEnd, endFormat));
}
else
{
xLoc += timeDivision;
StringFormat otherFormat = new StringFormat()
{
Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Far
};
TimeXLocations.Add(new Tuple <DateTime, int, StringFormat>(dateWithHour, xLoc, otherFormat));
}
curHour++;
}
DayXLocations.Add(new Tuple <DateTime, int, int>(curDay, dayStart, dayEnd));
dayXLoc = dayEnd;
curDay = curDay.AddDays(1);
}
}
private int GetXLocationForDay(DateTime date)
{
Tuple <DateTime, int, int> foundGroup = DayXLocations.Find(p => p.Item1 == date.Date);
if (foundGroup != null)
{
return(foundGroup.Item2);
}
else
{
return(-1);
}
}
private void DrawHolidays(int startY, int endY)
{
//Don't draw holidays if there are no rows (because the holiday "block" takes up the height of the row)
if (Rows.Count == 0)
{
return;
}
foreach (KeyValuePair <DateTime, string> holiday in Holidays)
{
//If holiday is not within visible range, don't draw it
if (holiday.Key < StartDate ||
holiday.Key >= EndDate)
{
continue;
}
Tuple <DateTime, int, int> dayLocInfo = DayXLocations.Find(p => p.Item1 == holiday.Key.Date);
if (dayLocInfo != null)
{
Rectangle holidayRect = new Rectangle(dayLocInfo.Item2,
startY,
dayLocInfo.Item3 - dayLocInfo.Item2,
endY - startY);
graphics.FillRectangle(new HatchBrush(HatchStyle.ForwardDiagonal, Color.White, Color.DimGray), holidayRect);
//Write holiday name
if (!string.IsNullOrEmpty(holiday.Value))
{
Font holidayNameFont = new Font(this.font, FontStyle.Bold);
Point holidayRectCenter = new Point(holidayRect.X + holidayRect.Width / 2, startY + 5);
int textWidth = (int)Math.Round(graphics.MeasureString(holiday.Value, holidayNameFont).Width);
int textHeight = (int)Math.Round(graphics.MeasureString(holiday.Value, holidayNameFont).Height);
Rectangle holidayNameRect = new Rectangle(holidayRectCenter.X - textWidth / 2 - 2, //"-2" for left margin of 2
holidayRectCenter.Y,
textWidth + 4, //"+4" for right margin of 2 (width also includes left margin)
textHeight);
graphics.FillRectangle(new SolidBrush(Color.White), holidayNameRect);
Point stringLoc = new Point(holidayRectCenter.X, holidayRectCenter.Y + 7);
graphics.DrawString(holiday.Value, holidayNameFont, new SolidBrush(Color.Black), stringLoc, alignAllCenter);
}
}
}
}
