static void OnValuePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
CNum c = (CNum)d;
double val = (double)e.NewValue;
if (double.IsInfinity(val))
{
throw new ArgumentException("无效值");
}
if (c._levelsFromRootCall == 0)
{
c._requestedVal = val;
c._initialVal = (double)e.OldValue;
}
c._levelsFromRootCall++;
c.CoerceValue();
c._levelsFromRootCall--;
if (c._levelsFromRootCall == 0)
{
if (!AreClose(c._initialVal, val))
{
c.OnValueChanged(new ValueChangedEventArgs <double>(c._initialVal, val));
}
}
}
static void OnIsIntegerChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
CNum c = (CNum)d;
bool isInteger = (bool)e.NewValue;
switch (c.ValueFormat)
{
case ValueFormat.Numeric:
c.NumberFormatInfo.NumberDecimalDigits = isInteger ? 0 : CultureInfo.CurrentCulture.NumberFormat.NumberDecimalDigits;
break;
case ValueFormat.Currency:
c.NumberFormatInfo.CurrencyDecimalDigits = isInteger ? 0 : CultureInfo.CurrentCulture.NumberFormat.CurrencyDecimalDigits;
break;
case ValueFormat.Percentage:
c.NumberFormatInfo.PercentDecimalDigits = isInteger ? 0 : CultureInfo.CurrentCulture.NumberFormat.PercentDecimalDigits;
break;
}
c.UpdateText();
}
static void OnMinimumPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
CNum c = (CNum)d;
if (!IsValidDoubleValue((double)e.NewValue))
{
throw new ArgumentException("无效最小值");
}
if (c._levelsFromRootCall == 0)
{
c._initialMax = c.Maximum;
c._initialVal = c.Value;
}
c._levelsFromRootCall++;
c.CoerceMaximum();
c.CoerceValue();
c._levelsFromRootCall--;
if (c._levelsFromRootCall == 0)
{
// UI 自动化
}
}