/// <summary>
/// The draw month header.
/// </summary>
/// <param name="g">
/// The g.
/// </param>
/// <param name="calMonth">
/// The cal month.
/// </param>
/// <param name="state">
/// The state.
/// </param>
public override void DrawMonthHeader(Graphics g, MonthCalendarMonth calMonth, MonthCalendarHeaderState state)
{
if (calMonth == null || !CheckParams(g, calMonth.TitleBounds))
{
return;
}
// get title bounds
Rectangle rect = calMonth.TitleBounds;
MonthCalendarDate date = new MonthCalendarDate(this._calendar.CultureCalendar, calMonth.Date);
MonthCalendarDate firstVisible = new MonthCalendarDate(this._calendar.CultureCalendar, calMonth.FirstVisibleDate);
string month;
int year;
// gets the month name for the month the MonthCalendarMonth represents and the year string
if (firstVisible.Era != date.Era)
{
month = this._calendar.FormatProvider.GetMonthName(firstVisible.Year, firstVisible.Month);
year = firstVisible.Year;
}
else
{
month = this._calendar.FormatProvider.GetMonthName(date.Year, date.Month);
year = date.Year;
}
string yearString = this._calendar.UseNativeDigits
? DateMethods.GetNativeNumberString(year, this._calendar.Culture.NumberFormat.NativeDigits, false)
: year.ToString(CultureInfo.CurrentUICulture);
// get used font
Font headerFont = this._calendar.HeaderFont;
// create bold font
Font boldFont = new Font(headerFont.FontFamily, headerFont.SizeInPoints, FontStyle.Bold);
// measure sizes
SizeF monthSize = g.MeasureString(month, boldFont);
SizeF yearSize = g.MeasureString(yearString, boldFont);
float maxHeight = Math.Max(monthSize.Height, yearSize.Height);
// calculates the width and the starting position of the arrows
int width = (int)monthSize.Width + (int)yearSize.Width + 7;
int arrowLeftX = rect.X + 6;
int arrowRightX = rect.Right - 6;
int arrowY = rect.Y + (rect.Height / 2) - 4;
int x = Math.Max(0, rect.X + (rect.Width / 2) + 1 - (width / 2));
int y = Math.Max(0, rect.Y + (rect.Height / 2) + 1 - (((int)maxHeight + 1) / 2));
// set the title month name bounds
calMonth.TitleMonthBounds = new Rectangle(x, y, (int)monthSize.Width + 1, (int)maxHeight + 1);
// set the title year bounds
calMonth.TitleYearBounds = new Rectangle(x + calMonth.TitleMonthBounds.Width + 7, y, (int)yearSize.Width + 1, (int)maxHeight + 1);
// generate points for the left and right arrow
Point[] arrowLeft =
{
new Point(arrowLeftX, arrowY + 4), new Point(arrowLeftX + 4, arrowY), new Point(arrowLeftX + 4, arrowY + 8),
new Point(arrowLeftX, arrowY + 4)
};
Point[] arrowRight =
{
new Point(arrowRightX, arrowY + 4), new Point(arrowRightX - 4, arrowY), new Point(arrowRightX - 4, arrowY + 8),
new Point(arrowRightX, arrowY + 4)
};
// get brushes for normal, mouse over and selected RequestState
// get title month name and year bounds
Rectangle monthRect = calMonth.TitleMonthBounds;
Rectangle yearRect = calMonth.TitleYearBounds;
// set used fonts
Font monthFont = headerFont;
Font yearFont = headerFont;
// set used brushes
Brush monthBrush = InactiveTextBrush, yearBrush = InactiveTextBrush;
// adjust brush and font if year selected
if (state == MonthCalendarHeaderState.YearSelected)
{
yearBrush = SelectedTextBrush;
yearFont = boldFont;
yearRect.Width += 4;
}
else if (state == MonthCalendarHeaderState.YearActive)
{
// adjust brush if mouse over year
yearBrush = ActiveTextBrush;
}
// adjust brush and font if month name is selected
if (state == MonthCalendarHeaderState.MonthNameSelected)
{
monthBrush = SelectedTextBrush;
monthFont = boldFont;
monthRect.Width += 4;
}
else if (state == MonthCalendarHeaderState.MonthNameActive)
{
// adjust brush if mouse over month name
monthBrush = ActiveTextBrush;
}
// draws the month name and year string
g.DrawString(month, monthFont, monthBrush, monthRect);
g.DrawString(yearString, yearFont, yearBrush, yearRect);
boldFont.Dispose();
// if left arrow has to be drawn
if (calMonth.DrawLeftButton)
{
// get arrow color
var arrowBrush = this._calendar.LeftButtonState == ButtonState.Normal ? InactiveArrowBrush : ActiveArrowBrush;
// set left arrow rect
this._calendar.SetLeftArrowRect(new Rectangle(rect.X, rect.Y, 15, rect.Height));
// draw left arrow
using (GraphicsPath path = new GraphicsPath())
{
path.AddLines(arrowLeft);
g.FillPath(arrowBrush, path);
}
}
// if right arrow has to be drawn
if (calMonth.DrawRightButton)
{
Brush arrowBrush = this._calendar.RightButtonState == ButtonState.Normal ? InactiveArrowBrush : ActiveArrowBrush;
// set right arrow rect
this._calendar.SetRightArrowRect(new Rectangle(rect.Right - 15, rect.Y, 15, rect.Height));
// draw arrow
using (GraphicsPath path = new GraphicsPath())
{
path.AddLines(arrowRight);
g.FillPath(arrowBrush, path);
}
}
}
/// <summary> /// Draws the header of a <see cref="MonthCalendarMonth"/>. /// </summary> /// <param name="g"> /// The <see cref="Graphics"/> object used to draw. /// </param> /// <param name="calMonth"> /// The <see cref="MonthCalendarMonth"/> to draw the header for. /// </param> /// <param name="state"> /// The <see cref="MonthCalendarHeaderState"/>. /// </param> public abstract void DrawMonthHeader(Graphics g, MonthCalendarMonth calMonth, MonthCalendarHeaderState state);
