private void HourButtonClick(object sender, RoutedEventArgs e)
{
// Set the Display Time
var sourceButton = sender as Button;
var newHour = Convert.ToInt32(sourceButton.Content);
DisplayTime = DisplayTime.AddHours(newHour - DisplayTime.Hour);
}
private void HourGrab_MouseMove(object sender, MouseEventArgs e)
{
if (hourGrabMouseIsDown)
{
// Use positions relative to the hours display (centre is fixed with clock centre).
var mousePosition = e.GetPosition(EllipseHoursAm);
// Use the position to calculate the angle and hence required time
var a = GetAngle(mousePosition, EllipseHoursAm.Width / 2, EllipseHoursAm.Height / 2);
var hour = a / HourHandDegreesPerHour;
var minutes = Math.Round(hour * 60 % 60);
hour = Math.Floor(hour);
// The current hour will be in the range 0 to 11 (i.e. morning).
// The current display time could be morning or afternoon and if the
// display time is near midnight this could be a transition to another day.
var dayOffset = 0;
var displayHour = DisplayTime.Hour;
if (displayHour < 3 && hour > 9)
{
// Drag transition back a day
dayOffset = -1;
hour += HoursPerRevolution; // Adjust time to afternoon
}
else if (displayHour > 21 && hour < 3)
{
// Drag transition forward a day
dayOffset = 1;
}
else if (displayHour > 9 && displayHour < 12 &&
hour < 3)
{
// Drag transition between morning and afternoon
hour += HoursPerRevolution;
}
else if (displayHour >= 12)
{
// Dragging in the afternoon
// Add 12 hours if not transition to am!
if (!(displayHour < 15 && hour > 9))
{
hour += HoursPerRevolution;
}
}
DisplayTime = DisplayTime.AddHours(hour - DisplayTime.Hour);
DisplayTime = DisplayTime.AddMinutes(minutes - DisplayTime.Minute);
if (dayOffset != 0)
{
DisplayTime = DisplayTime.AddDays(dayOffset);
}
}
}
private void EllipseHoursPm_MouseDown(object sender, MouseButtonEventArgs e)
{
mouseDownPoint = e.GetPosition(sender as IInputElement);
// Use the down position to calculate the angle and hence required time
var a = GetAngle(mouseDownPoint, EllipseHoursPm.Width / 2, EllipseHoursPm.Height / 2);
var hour = (int)Math.Round(a / HourHandDegreesPerHour) + HoursPerRevolution;
if (hour == 24)
{
hour = 0;
}
DisplayTime = DisplayTime.AddHours(hour - DisplayTime.Hour);
}
private void EllipseHoursAm_MouseDown(object sender, MouseButtonEventArgs e)
{
mouseDownPoint = e.GetPosition(sender as IInputElement);
// Use the down position to calculate the angle and hence required time
var a = GetAngle(mouseDownPoint, EllipseHoursAm.Width / 2, EllipseHoursAm.Height / 2);
var hour = (int)Math.Round(a / HourHandDegreesPerHour);
if (hour < 1)
{
hour += HoursPerRevolution;
}
// Use right click to set afternoon
if (e.ChangedButton == MouseButton.Right)
{
hour += HoursPerRevolution;
}
DisplayTime = DisplayTime.AddHours(hour - DisplayTime.Hour);
}