public void OnButtonDragDelta(ClockButton sender, DragDeltaEventArgs e)
{
this.dragPosition = new Point(
this.dragPosition.X + e.HorizontalChange,
this.dragPosition.Y + e.VerticalChange);
Point delta = new Point(
this.dragPosition.X - this.canvasCenter.X,
this.dragPosition.Y - this.canvasCenter.Y);
var angle = Math.Atan2(delta.X, -delta.Y);
if (angle < 0)
{
angle += 2 * Math.PI;
}
DateTime time;
if (this.DisplayMode == ClockItemMember.Hours)
{
if (this.Is24HoursEnabled)
{
double outerBoundary = this.canvasCenter.X * 0.75 + (this.canvasCenter.X * 1 - this.canvasCenter.X * 0.75) / 2;
double sqrt = Math.Sqrt(
(this.canvasCenter.X - this.dragPosition.X) * (this.canvasCenter.X - this.dragPosition.X) +
(this.canvasCenter.Y - this.dragPosition.Y) * (this.canvasCenter.Y - this.dragPosition.Y));
bool localIsPostMeridiem = sqrt > outerBoundary;
int hour = (int)Math.Round(6 * angle / Math.PI, MidpointRounding.AwayFromZero) % 12 + (localIsPostMeridiem ? 12 : 0);
if (hour == 12)
{
hour = 0;
}
else if (hour == 0)
{
hour = 12;
}
time = new DateTime(this.Time.Year, this.Time.Month, this.Time.Day, hour, this.Time.Minute, this.Time.Second);
}
else
{
time = new DateTime(this.Time.Year, this.Time.Month, this.Time.Day,
(int)Math.Round(6 * angle / Math.PI, MidpointRounding.AwayFromZero) % 12 +
(this.IsPostMeridiem ? 12 : 0), this.Time.Minute, this.Time.Second);
}
}
else
{
time = new DateTime(this.Time.Year, this.Time.Month, this.Time.Day, this.Time.Hour, (int)Math.Round(30 * angle / Math.PI, MidpointRounding.AwayFromZero) % 60, this.Time.Second);
}
this.Time = time;
}
public void OnButtonDragCompleted(ClockButton sender, DragCompletedEventArgs e)
{
if (this.DisplayMode == ClockItemMember.Hours)
{
this.DisplayMode = ClockItemMember.Minutes;
}
else
{
if (this.TimeSelected != null)
{
this.TimeSelected(this, EventArgs.Empty);
}
}
}
private void GenerateButtons(Panel canvas, List <int> range, ClockItemMember mode, double innerRatio, string format)
{
double anglePerItem = 360.0 / range.Count;
double radiansPerItem = anglePerItem * (Math.PI / 180);
if (canvas.Width < 10.0 || Math.Abs(canvas.Height - canvas.Width) > 0.0)
{
return;
}
this.canvasCenter = new Point(canvas.Width / 2, canvas.Height / 2);
double hypotenuseRadius = this.canvasCenter.X * innerRatio;
foreach (int value in range)
{
double adjacent = Math.Cos(value * radiansPerItem) * hypotenuseRadius;
double opposite = Math.Sin(value * radiansPerItem) * hypotenuseRadius;
double centerX = this.canvasCenter.X + opposite;
double centerY = this.canvasCenter.Y - adjacent;
ClockButton button = new ClockButton(mode, value, centerX, centerY, innerRatio < 1.0, this)
{
Content = (value == 60 ? 0 : (value == 24 ? 0 : value)).ToString(format),
};
if (innerRatio < 1.0)
{
button.TextOpacity = 0.7;
button.FontSize = 11;
}
if (mode == ClockItemMember.Minutes && (value % 5 != 0))
{
button.Width = 10;
button.Height = 10;
button.Style = this.FindResource <Style>("HintClockButtonStyle");
}
else
{
button.Width = 40;
button.Height = 40;
}
Canvas.SetLeft(button, centerX - button.Width / 2);
Canvas.SetTop(button, centerY - button.Height / 2);
canvas.Children.Add(button);
}
}
public void OnButtonTapped(ClockButton sender)
{
if (sender.Mode == ClockItemMember.Hours)
{
int hour = sender.Value;
if (this.Is24HoursEnabled)
{
if (hour == 24)
{
hour = 0;
}
else if (hour == 0)
{
hour = 12;
}
}
else
{
hour = (hour % 12);
if (this.IsPostMeridiem)
{
hour += 12;
}
}
this.Time = new DateTime(this.Time.Year, this.Time.Month, this.Time.Day, hour, this.Time.Minute, 0);
this.DisplayMode = ClockItemMember.Minutes;
}
else
{
int minute = sender.Value % 60;
this.Time = new DateTime(this.Time.Year, this.Time.Month, this.Time.Day, this.Time.Hour, minute, 0);
}
this.CheckButton(sender);
if (sender.Mode == ClockItemMember.Minutes)
{
if (this.TimeSelected != null)
{
this.TimeSelected(this, EventArgs.Empty);
}
}
}
private void CheckButton(ClockButton button)
{
if (button.IsChecked.HasValue && button.IsChecked.Value)
{
return;
}
button.IsChecked = true;
if (button.Mode == ClockItemMember.Hours)
{
if (this.selectedHoursButton != null)
{
this.selectedHoursButton.IsChecked = false;
}
this.selectedHoursButton = button;
if (button.IsInner)
{
// line usually goes from the center (100, 100) to the middle top (100,0)
// but here, we want to adjust Y2 to use the inner ratio
this.hoursLine.Y2 = (1 - InnerRatio) * this.hoursCanvas.Height / 2;
}
else
{
this.hoursLine.Y2 = 0;
}
}
else
{
if (this.selectedMinutesButton != null)
{
this.selectedMinutesButton.IsChecked = false;
}
this.selectedMinutesButton = button;
}
}
public void OnButtonDragStarted(ClockButton sender, DragStartedEventArgs e)
{
this.dragPosition = new Point(e.HorizontalOffset, e.VerticalOffset);
}