private void FFunction_Click(object sender, EventArgs e)
{
string tail = HandleEquation.GetLastUnit(equation);
string tail2 = HandleEquation.GetLastUnit(richTxtEquation.Text);
switch (((ToolStripMenuItem)sender).Name)
{
case "toolStripMenuItemAbs":
if (tail2[0] == '|')
{
break; //已经添加过绝对值符，不再添加
}
equation = HandleEquation.RemoveLastUnit(equation) + "abs(" + tail + ")";
richTxtEquation.Text = HandleEquation.RemoveLastUnit(richTxtEquation.Text) + "|" + tail2 + "|";
break;
case "toolStripMenuItemFloor":
equation = HandleEquation.RemoveLastUnit(equation) + "floor(" + tail + ")";
richTxtEquation.Text = HandleEquation.RemoveLastUnit(richTxtEquation.Text) + "⌊" + tail2 + "⌋";
break;
case "toolStripMenuItemCeil":
equation = HandleEquation.RemoveLastUnit(equation) + "ceil(" + tail + ")";
richTxtEquation.Text = HandleEquation.RemoveLastUnit(richTxtEquation.Text) + "⌈" + tail2 + "⌉";
break;
default:
break;
}
}
private void btnFac_Click(object sender, EventArgs e)
{
string tail = HandleEquation.GetLastUnit(equation);
equation = HandleEquation.RemoveLastUnit(equation) + "(" + tail + ")!";
string tail2 = HandleEquation.GetLastUnit(richTxtEquation.Text);
richTxtEquation.Text = HandleEquation.RemoveLastUnit(richTxtEquation.Text) + "(" + tail2 + ")!";
}
private void Function_Click(object sender, EventArgs e)
{
string tail = HandleEquation.GetLastUnit(equation);
equation = HandleEquation.RemoveLastUnit(equation) + ((ToolStripMenuItem)sender).Text + "(" + tail + ")";
string tail2 = HandleEquation.GetLastUnit(richTxtEquation.Text);
richTxtEquation.Text = HandleEquation.RemoveLastUnit(richTxtEquation.Text) + ((ToolStripMenuItem)sender).Text + "(" + tail2 + ")";
}
private void btnDelete_Click(object sender, EventArgs e)
{
if (equation.Length == 1)
{
equation = "0";
richTxtEquation.Text = "0";
}
else if (equation.Last() >= 48 && equation.Last() <= 57)
{
equation = equation.Substring(0, equation.Length - 1);
richTxtEquation.Text = richTxtEquation.Text.Substring(0, richTxtEquation.Text.Length - 1);
}
else if (equation.Last() == '.')
{
equation = equation.Substring(0, equation.Length - 1);
richTxtEquation.Text = richTxtEquation.Text.Substring(0, richTxtEquation.Text.Length - 1);
isClickPoint = false;
}
else if (HandleEquation.IsGeneralOp(equation.Last()))
{
equation = equation.Substring(0, equation.Length - 1);
richTxtEquation.Text = richTxtEquation.Text.Substring(0, richTxtEquation.Text.Length - 1);
string tail = HandleEquation.GetLastUnit(equation);
if (tail.Contains("."))
{
isClickPoint = true;
}
else
{
isClickPoint = false;
}
}
else
{
equation = HandleEquation.RemoveLastUnit(equation);
richTxtEquation.Text = HandleEquation.RemoveLastUnit(richTxtEquation.Text);
isClickPoint = false;
}
if (equation == "" || richTxtEquation.Text == "")
{
equation = "0";
richTxtEquation.Text = "0";
}
}
private void btnNega_Click(object sender, EventArgs e)
{
string tail = HandleEquation.GetLastUnit(equation);
string tail2 = HandleEquation.GetLastUnit(richTxtEquation.Text);
string removedTail = HandleEquation.RemoveLastUnit(equation);
string removedTail2 = HandleEquation.RemoveLastUnit(richTxtEquation.Text);
if (removedTail.Length == 0) //输入是一个正数
{
equation = "-" + tail;
richTxtEquation.Text = "-" + tail2;
}
else if (removedTail.Last() == '-' && removedTail.Length == 1)
{ //输入是一个负数
equation = tail;
richTxtEquation.Text = tail2;
}
else
{
equation = removedTail + HandleEquation.ChangeToNega(tail);
richTxtEquation.Text = removedTail2 + HandleEquation.ChangeToNega(tail2);
}
}
private void ShiftManaged_Click(object sender, EventArgs e)
{
switch (((Button)sender).Text)
{
case "x³":
equation += "^3";
richTxtEquation.Text += "^3";
break;
case "x²":
equation += "^2";
richTxtEquation.Text += "^2";
break;
case "^":
equation += "^";
richTxtEquation.Text += "^";
break;
case "lg":
string tail = HandleEquation.GetLastUnit(equation);
equation = HandleEquation.RemoveLastUnit(equation) + "log10(" + tail + ")";
string tail0 = HandleEquation.GetLastUnit(richTxtEquation.Text);
richTxtEquation.Text = HandleEquation.RemoveLastUnit(richTxtEquation.Text) + ((Button)sender).Text + "(" + tail0 + ")";
break;
case "ln":
string tail1 = HandleEquation.GetLastUnit(equation);
equation = HandleEquation.RemoveLastUnit(equation) + ((Button)sender).Text + "(" + tail1 + ")";
string tail2 = HandleEquation.GetLastUnit(richTxtEquation.Text);
richTxtEquation.Text = HandleEquation.RemoveLastUnit(richTxtEquation.Text) + ((Button)sender).Text + "(" + tail2 + ")";
break;
case "²√x":
equation += "^(1/2)";
string tail3 = HandleEquation.GetLastUnit(richTxtEquation.Text);
richTxtEquation.Text = HandleEquation.RemoveLastUnit(richTxtEquation.Text) + "²√(" + tail3 + ")";
break;
case "³√x":
equation += "^(1/3)";
string tail4 = HandleEquation.GetLastUnit(richTxtEquation.Text);
richTxtEquation.Text = HandleEquation.RemoveLastUnit(richTxtEquation.Text) + "³√(" + tail4 + ")";
break;
case "1/x":
string tail5 = HandleEquation.GetLastUnit(equation);
equation = HandleEquation.RemoveLastUnit(equation) + "1/(" + tail5 + ")";
string tail6 = HandleEquation.GetLastUnit(richTxtEquation.Text);
richTxtEquation.Text = HandleEquation.RemoveLastUnit(richTxtEquation.Text) + "1/(" + tail6 + ")";
break;
case "e^x":
string tail7 = HandleEquation.GetLastUnit(equation);
equation = HandleEquation.RemoveLastUnit(equation) + "e^(" + tail7 + ")";
string tail8 = HandleEquation.GetLastUnit(richTxtEquation.Text);
richTxtEquation.Text = HandleEquation.RemoveLastUnit(richTxtEquation.Text) + "e^(" + tail8 + ")";
break;
case "log y(x)":
MessageBox.Show("请先右键此按钮设置底数。");
break;
default:
string tail9 = HandleEquation.GetLastUnit(equation);
equation = HandleEquation.RemoveLastUnit(equation) + "log" + someLog.LogBase + "(" + tail9 + ")";
string tail10 = HandleEquation.GetLastUnit(richTxtEquation.Text);
richTxtEquation.Text = HandleEquation.RemoveLastUnit(richTxtEquation.Text) + "log " + someLog.LogBase + "(" + tail10 + ")";
break;
}
}