private static void OnMinDecimalPlacesChanged(DependencyObject element,
DependencyPropertyChangedEventArgs e)
{
NumericUpDownFloat control = (NumericUpDownFloat)element;
control.InvalidateProperty(DecimalPlacesProperty);
}
private static void OnValueChanged(DependencyObject element,
DependencyPropertyChangedEventArgs e)
{
NumericUpDownFloat control = (NumericUpDownFloat)element;
if (control.m_text_box != null)
{
control.m_text_box.UndoLimit = 0;
control.m_text_box.UndoLimit = 1;
}
}
private static void OnMajorDeltaChanged(DependencyObject element,
DependencyPropertyChangedEventArgs e)
{
NumericUpDownFloat control = (NumericUpDownFloat)element;
float majorDelta = (float)e.NewValue;
if (majorDelta < control.MinorDelta)
{
control.MinorDelta = majorDelta;
}
}
private static object CoerceDecimalPlaces(DependencyObject element, Object baseValue)
{
Int32 decimalPlaces = (Int32)baseValue;
NumericUpDownFloat control = (NumericUpDownFloat)element;
if (decimalPlaces < control.MinDecimalPlaces)
{
decimalPlaces = control.MinDecimalPlaces;
}
else if (decimalPlaces > control.MaxDecimalPlaces)
{
decimalPlaces = control.MaxDecimalPlaces;
}
return(decimalPlaces);
}
private static void OnMinValueChanged(DependencyObject element,
DependencyPropertyChangedEventArgs e)
{
NumericUpDownFloat control = (NumericUpDownFloat)element;
float min_value = (float)e.NewValue;
// If minValue steps over MaxValue, shift it
if (min_value > control.MaxValue)
{
control.MaxValue = min_value;
}
if (min_value > control.Value)
{
control.Value = min_value;
}
}
private static void OnMaxValueChanged(DependencyObject element,
DependencyPropertyChangedEventArgs e)
{
NumericUpDownFloat control = (NumericUpDownFloat)element;
float max_value = (float)e.NewValue;
// If maxValue steps over MinValue, shift it
if (max_value < (int)control.MinValue)
{
control.MinValue = max_value;
}
// max limit of the value
if (max_value < (int)control.Value)
{
control.Value = max_value;
}
}
private static void OnDecimalPlacesChanged(DependencyObject element,
DependencyPropertyChangedEventArgs e)
{
NumericUpDownFloat control = (NumericUpDownFloat)element;
Int32 decimalPlaces = (Int32)e.NewValue;
control.m_culture.NumberFormat.NumberDecimalDigits = decimalPlaces;
if (control.IsDecimalPointDynamic)
{
control.IsDecimalPointDynamic = false;
control.InvalidateProperty(ValueProperty);
control.IsDecimalPointDynamic = true;
}
else
{
control.InvalidateProperty(ValueProperty);
}
}
private static object CoerceMinDecimalPlaces(DependencyObject element, Object baseValue)
{
Int32 minDecimalPlaces = (Int32)baseValue;
NumericUpDownFloat control = (NumericUpDownFloat)element;
if (minDecimalPlaces < 0)
{
minDecimalPlaces = 0;
}
else if (minDecimalPlaces > 28)
{
minDecimalPlaces = 28;
}
else if (minDecimalPlaces > control.MaxDecimalPlaces)
{
control.MaxDecimalPlaces = minDecimalPlaces;
}
return(minDecimalPlaces);
}
private static object CoerceValue(DependencyObject element, object baseValue)
{
NumericUpDownFloat control = (NumericUpDownFloat)element;
float value = (float)baseValue;
control.CoerceValueToBounds(ref value);
// Get the text representation of Value
string valueString = value.ToString(m_all_float_digits);
// Count all decimal places
int decimalPlaces = control.GetDecimalPlacesCount(valueString);
if (decimalPlaces > control.DecimalPlaces)
{
if (control.IsDecimalPointDynamic)
{
// Assigning DecimalPlaces will coerce the number
control.DecimalPlaces = decimalPlaces;
// If the specified number of decimal places is still too much
if (decimalPlaces > control.DecimalPlaces)
{
value = control.TruncateValue(valueString, control.DecimalPlaces);
}
}
else
{
// Remove all overflowing decimal places
value = control.TruncateValue(valueString, decimalPlaces);
}
}
else if (control.IsDecimalPointDynamic)
{
control.DecimalPlaces = decimalPlaces;
}
string new_text;
if (control.m_text_box != null)
{
if (control.IsThousandSeparatorVisible)
{
new_text = value.ToString("N", control.m_culture);
}
else
{
new_text = value.ToString("F", control.m_culture);
}
// update caret index
int new_caret_index = new_text.Length - (control.m_text_box.Text.Length - control.m_text_box.CaretIndex);
if (new_caret_index < 0)
{
new_caret_index = 0;
}
if (new_caret_index >= new_text.Length)
{
new_caret_index = new_text.Length - 1;
}
// update selection
int original_decimal_places = control.GetDecimalPlacesCount(control.m_text_box.Text);
int new_decimal_places = control.GetDecimalPlacesCount(new_text);
int new_selection_start_index = control.m_text_box.SelectionStart;
int original_selection_length = control.m_text_box.SelectionLength;
if (control.m_text_box.SelectionLength == 1)
{
new_selection_start_index = control.m_text_box.SelectionStart - (control.m_text_box.Text.Length - original_decimal_places) + (new_text.Length - new_decimal_places);
if (new_text.Length < new_selection_start_index + 1)
{
if (!new_text.Contains(control.m_culture.NumberFormat.NumberDecimalSeparator))
{
new_selection_start_index += 1;
new_text += '.';
}
new_text += new string('0', new_selection_start_index - new_text.Length + 1);
}
}
control.m_text_box.Text = new_text;
control.m_text_box.CaretIndex = new_caret_index;
control.m_text_box.Select(new_selection_start_index, original_selection_length);
}
return(baseValue);
}
