private void textBox_KeyDown(object sender, KeyEventArgs e)
{
if ((e.Control || e.Shift) && e.KeyCode == Keys.Return)
{
double d = 0;
//現在のカーソル位置のテキストを計算する
int count = 0;
int selectionLine = 0;
for (int i = 0; i < textBox.Lines.Length; i++)
{
count += textBox.Lines[i].Length + 2;
if (count > textBox.SelectionStart)
{
selectionLine = i;
break;
}
}
string[] formula = new string[selectionLine + 1];
Array.Copy(textBox.Lines, formula, selectionLine + 1);
d = NumericalFormula.GetNumetricValue(formula);
if (!double.IsNaN(d))
{
skipTextChangeEvent = true;
this.numericalValue = d;
if (textBox.Multiline)
{
if (textBox.Text.IndexOf("\r\n", textBox.SelectionStart) >= 0)
{
textBox.Text = textBox.Text.Remove(textBox.Text.IndexOf("\r\n", textBox.SelectionStart));
}
textBox.Text += "\r\n" + GetString();
}
else
{
textBox.Text = GetString();
}
this.numericalValue = d;
if (ValueChanged != null)
{
ValueChanged(this, e);
}
skipTextChangeEvent = false;
textBox.SelectionStart = textBox.Text.Length;
}
}
}
private bool renewValue = true; //イベントはキャンセルしないが、numericalValueは変更しない
private void textBox_TextChanged(object sender, EventArgs e)
{
if (skipTextChangeEvent)
{
return;
}
try
{
int count = 0;
int selectionLine = 0;
for (int i = 0; i < textBox.Lines.Length; i++)
{
count += textBox.Lines[i].Length + 2;
if (count > textBox.SelectionStart)
{
selectionLine = i;
break;
}
}
string[] formula = new string[selectionLine + 1];
Array.Copy(textBox.Lines, formula, selectionLine + 1);
double d = NumericalFormula.GetNumetricValue(formula);
if (!double.IsNaN(d))
{
if (d != this.numericalValue)
{
if (renewValue)
{
this.numericalValue = d;//NumericalValueを外部から変更された時は値を変更しない
}
if (ValueChanged != null)
{
ValueChanged(this, e);
}
}
}
}
catch { }
}
