private void btnleft_Click(object sender, EventArgs e) //单机左键事件
{
if (error)
{
ClearErrorinfo();
}
if (DisPlay.SelectionStart > 0 && DisPlay.SelectionStart < 3)
{
DisPlay.SelectionStart--;
DisPlay.Select(DisPlay.SelectionStart, 0);
DisPlay.Focus();
}
else
{
if (DisPlay.SelectionStart > 2)
{
char ch = DisPlay.Text[DisPlay.SelectionStart - 1];
if (ch == 's' || ch == 'n')
{
DisPlay.SelectionStart -= 3; //有Cos,Sin,Tan时，左则三格
}
else
{
DisPlay.SelectionStart--;
}
}
DisPlay.Select(DisPlay.SelectionStart, 0);
DisPlay.Focus(); //若为空的处置
}
}
private void btnPoint_Click(object sender, EventArgs e) //小数点
{
Button btn = (Button)sender;
DisPlay.Text += btnPoint.Text;
DisPlay.Focus();
}
private string GetEnable_SubStr(ref bool Lastrow) //选择当前执行行数代码
{
int RowIndex = DisPlay.GetLineFromCharIndex(DisPlay.SelectionStart);
int Row = 0;
pos[0] = 0;
for (int i = 0; i < DisPlay.Text.Length; i++)
{
if (DisPlay.Text[i] == '\n')
{
Row++;
pos[Row] = i + 1;
}
}
if (RowIndex < Row)
{
string s = DisPlay.Text.Substring(pos[RowIndex], pos[RowIndex + 1] - pos[RowIndex] - 1);
if (s[0] == '=')
{
s = s.Substring(1);
}
return(s);
}
else
{
int x = DisPlay.Text.Length - pos[RowIndex];
Lastrow = true;
string s = DisPlay.Text.Substring(pos[RowIndex], x);
if (s[0] == '=')
{
s = s.Substring(1);
}
return(s);
}
}
private void btnAnswer_Click(object sender, EventArgs e)
{
string s1 = "";
if (error)
{
ClearErrorinfo();
}
int RowIndex = DisPlay.GetLineFromCharIndex(DisPlay.SelectionStart);
CanOperation[RowIndex] = true;
if (BIN.Checked)
{
s1 = System.Convert.ToString(preAnswer, 2);
}
if (OCT.Checked)
{
s1 = System.Convert.ToString(preAnswer, 8);
}
if (HEX.Checked)
{
s1 = System.Convert.ToString(preAnswer, 16);
}
if (DEC.Checked)
{
s1 = System.Convert.ToString(preAnswer);
}
DisPlay.SelectedText += s1;
DisPlay.Select(DisPlay.SelectionStart, 0);
DisPlay.Focus();
}
private void btnDiv_Click(object sender, EventArgs e) //除法运算
{
if (error)
{
ClearErrorinfo();
}
int RowIndex = DisPlay.GetLineFromCharIndex(DisPlay.SelectionStart);
CanOperation[RowIndex] = true;
int branch = Cheat_OpEnable();
if (branch == -1) //当前一个字符为+-*/（时，输入替换
{
btnDel_Click(sender, e);
DisPlay.SelectedText += '/';
DisPlay.Focus();
return;
}
if (branch == 0)
{
DisPlay.Focus();
return;
}
DisPlay.SelectedText += '/';
DisPlay.Select(DisPlay.SelectionStart, 0);
DisPlay.Focus();
}
private void btnDiv_Click(object sender, EventArgs e) //运算键 除/
{
Button btn = (Button)sender;
DisPlay.SelectedText += " / ";
DisPlay.Select(DisPlay.SelectionStart, 0);
DisPlay.Focus();
}
private void btn4_Click(object sender, EventArgs e)
{
int RowIndex = DisPlay.GetLineFromCharIndex(DisPlay.SelectionStart);
DisPlay.SelectedText += '4';
DisPlay.Select(DisPlay.SelectionStart, 0);
DisPlay.Focus();//给richTextBox焦点
}
private void Show_Errorinfo(string S) //显示错误信息
{
int pos = DisPlay.SelectionStart;
DisPlay.Text = DisPlay.Text + '\n' + S;
DisPlay.Select(pos, 0);
DisPlay.Focus();
error = true;
errorinfoLen = S.Length;
}
private void btnPoint_Click(object sender, EventArgs e)
{
if (error)
{
ClearErrorinfo();
}
DisPlay.SelectedText += '.';
DisPlay.Select(DisPlay.SelectionStart, 0);
DisPlay.Focus();
}
private void ClearErrorinfo() //任意键清除错误信息
{
int x = DisPlay.SelectionStart;
errorinfoLen++;
DisPlay.Text = DisPlay.Text.Substring(0, DisPlay.Text.Length - errorinfoLen);
errorinfoLen = 0;
error = false;
DisPlay.Select(x, 0); //重新选中
DisPlay.Focus();
}
private void btnExp_Click(object sender, EventArgs e)
{
if (error)
{
ClearErrorinfo();
}
int RowIndex = DisPlay.GetLineFromCharIndex(DisPlay.SelectionStart);
CanOperation[RowIndex] = true;
DisPlay.SelectedText += "E";
DisPlay.Select(DisPlay.SelectionStart, 0);
DisPlay.Focus();
}
private void btnCE_Click(object sender, EventArgs e)
{
DisPlay.Text = string.Empty; //符号运算重置
DisPlay.Focus();
for (int i = 0; i < 50; i++)
{
CanOperation[i] = false;
}
error = false; //判是否错误
errorinfoLen = 0;
pos = new int[50];
t_s = string.Empty;
}
private void btnALT_Click(object sender, EventArgs e)
{
DisPlay.Focus();
if (ALT)
{
ALT = false;
labALT.ForeColor = SystemColors.Control;
}
else
{
ALT = true;
labALT.ForeColor = Color.SteelBlue;
}
}
private void btnDel_Click(object sender, EventArgs e) //退格键
{
if (error)
{
ClearErrorinfo();
}
int RowIndex = DisPlay.GetLineFromCharIndex(DisPlay.SelectionStart);
int x = DisPlay.SelectionStart;
if (x > 0)
{
if (DisPlay.Text[x - 1] == 'n' || DisPlay.Text[x - 1] == 's')
{
DisPlay.Text = DisPlay.Text.Remove(x - 3, 3);
}
else
{
if (DisPlay.Text[x - 1] == 'o' || DisPlay.Text[x - 1] == 'a')
{
DisPlay.Text = DisPlay.Text.Remove(x - 2, 3);
}
else
{
if (DisPlay.Text[x - 1] == 'T' || DisPlay.Text[x - 1] == 'C' || DisPlay.Text[x - 1] == 'S')
{
DisPlay.Text = DisPlay.Text.Remove(x - 1, 3);
}
else
{
DisPlay.Text = DisPlay.Text.Remove(x - 1, 1); //使用remove之后Selection会变更，用x记录变更前位置
}
}
}
DisPlay.SelectionStart = x - 1;
DisPlay.Select(DisPlay.SelectionStart, 0);
DisPlay.Focus();
}
else
{
DisPlay.Focus();
}
}
private void btnLn_Click(object sender, EventArgs e)
{
if (error)
{
ClearErrorinfo();
}
int RowIndex = DisPlay.GetLineFromCharIndex(DisPlay.SelectionStart);
CanOperation[RowIndex] = true;
if (ALT)
{
DisPlay.SelectedText += "e^";
DisPlay.Select(DisPlay.SelectionStart, 0);
DisPlay.Focus();
ResetALT();
return;
}
DisPlay.SelectedText += "ln(";
DisPlay.Select(DisPlay.SelectionStart, 0);
DisPlay.Focus();
}
private void btnright_Click(object sender, EventArgs e)
{
if (error)
{
ClearErrorinfo();
}
char ch = new char();
if (DisPlay.Text != string.Empty)
{
ch = DisPlay.Text[DisPlay.SelectionStart];
}
if (ch == 'T' || ch == 'S' || ch == 'C') //有Cos,Sin,Tan时，右则三格
{
DisPlay.SelectionStart += 3;
}
else
{
DisPlay.SelectionStart++;
}
DisPlay.Select(DisPlay.SelectionStart, 0);
DisPlay.Focus();
}
private void btnup_Click(object sender, EventArgs e) //向上键事件实现
{
if (error)
{
ClearErrorinfo();
}
int RowIndex = DisPlay.GetLineFromCharIndex(DisPlay.SelectionStart);
if (RowIndex > 0)
{
int Row = 0;
for (int i = 0; i < DisPlay.Text.Length; i++)
{
if (DisPlay.Text[i] == '\n')
{
Row++;
pos[Row] = i + 1;
}
}
DisPlay.Select(pos[RowIndex - 1], 0);
}
DisPlay.Focus();
}
private void btnEqual_Click(object sender, EventArgs e)
{
int RowIndex = DisPlay.GetLineFromCharIndex(DisPlay.SelectionStart);
if (!CanOperation[RowIndex])
{
DisPlay.Focus();
return;
}
CanOperation[RowIndex] = false;
bool Lastrow = false;
string Str1;
if ((Str1 = GetEnable_SubStr(ref Lastrow)) == "")
{
return; //Str1为得到的子串
}
int Cheak = Cheak_Str(Str1);
if (Cheak == 0)
{
DisPlay.Focus();
return;
}
string Str = Str1 + '=';
Str = StrDespose(Str); //Str为处理过后可以进行运算的子串
Stack <char> OPTR = new Stack <char>(); //操作符栈
Stack <double> OPND = new Stack <double>(); //操作数栈
int Len = Str.Length;
int curr = 0;
char theta, x;
double a = 0; //操作数1，2
double b = 0;
double real_input = 0; //压入多位数字
bool is_num = false; //判断读入是否为数字,true为数字
OPTR.Push('=');
char ch = new char();
if ((real_input = GetNumber(Str, ref ch, ref curr, ref is_num)) == -1)
{
return;
}
while (ch != '=' || OPTR.Peek() != '=')
{
if (is_num)
{
OPND.Push(real_input);
is_num = false; //一旦压入数字，则为下一次判断初始化
real_input = 0;
}
else
{
while (ch == ')') //右括号的处理
{
bool have_leftbracket = false;
char[] StackTR = OPTR.ToArray();
for (int i = 0; i < OPTR.Count; i++)
{
if (StackTR[i] == '(')
{
have_leftbracket = true;
break;
}
}
if (have_leftbracket)
{
break;
}
if ((real_input = GetNumber(Str, ref ch, ref curr, ref is_num)) == -1)
{
return;
}
}
if (ch == '=' && OPTR.Peek() == '(')
{
while (OPTR.Peek() == '(')
{
OPTR.Pop();
}
}
switch (Precede(OPTR.Peek(), ch))
{
case '<':
OPTR.Push(ch);
if ((real_input = GetNumber(Str, ref ch, ref curr, ref is_num)) == -1)
{
return;
}
break;
case '>':
theta = OPTR.Pop();
if (theta == '+' || theta == '-' || theta == '*' || theta == '/' || theta == '^' || theta == 'x') //普通运算符运算
{
if (OPND.Count == 0) //出栈前检测是否为空
{
Show_Errorinfo("Error: \"" + theta + "\"not enough operand");
return;
}
b = OPND.Pop();
if (OPND.Count == 0)
{
Show_Errorinfo("Error: \"" + theta + "\"not enough operand");
return;
}
a = OPND.Pop();
OPND.Push(Operate(a, theta, b));
}
else
{
if (OPND.Count == 0)
{
Show_Errorinfo("Error: not enough operand");
return;
}
a = OPND.Pop();
OPND.Push(Operate(a, theta));
if (flag)
{
flag = false;
return;
}
}
break;
case '=':
x = OPTR.Pop();
if ((real_input = GetNumber(Str, ref ch, ref curr, ref is_num)) == -1)
{
return;
}
break;
}
}
}
//输出
if (t_s == string.Empty)
{
if (OPND.Count == 0)
{
if (Str1 == "π")
{
DisPlay.Text = DisPlay.Text + "\n=" + Math.PI.ToString() + '\n';
t_s = DisPlay.Text;
preAnswer = Math.PI;
}
else
{
DisPlay.Text = DisPlay.Text + "\n=" + Str.Remove(Str.Length - 1) + '\n';
t_s = DisPlay.Text;
preAnswer = double.Parse(Str.Remove(Str.Length - 1));
}
}
else
{
if (Lastrow == true)
{
DisPlay.Text = DisPlay.Text + "\n=" + OPND.Peek() + '\n'; //最后一行的增加
t_s = DisPlay.Text;
}
else
{
DisPlay.Text = DisPlay.Text + Str1 + "\n=" + OPND.Peek() + '\n'; //非最后一行的增加
t_s = DisPlay.Text;
}
preAnswer = OPND.Peek();
}
setMouse();
}
else
{
if (OPND.Count == 0)
{
if (Str1 == "π")
{
DisPlay.Text = t_s + Str1 + "\n=" + Math.PI.ToString() + '\n';
t_s = DisPlay.Text;
preAnswer = Math.PI;
}
else
{
DisPlay.Text = t_s + Str1 + "\n=" + Str.Remove(Str.Length - 1) + '\n';
t_s = DisPlay.Text;
preAnswer = double.Parse(Str.Remove(Str.Length - 1));
}
}
else
{
if (Lastrow == true)
{
DisPlay.Text = t_s + Str1 + "\n=" + OPND.Peek() + '\n'; //最后一行的增加
t_s = DisPlay.Text;
t_s = DisPlay.Text;
}
else
{
DisPlay.Text = t_s + Str1 + "\n=" + OPND.Peek() + '\n'; //非最后一行的增加
t_s = DisPlay.Text;
}
preAnswer = OPND.Peek();
}
setMouse();
}
}
private void btnEqual_Click(object sender, EventArgs e)
{
int d1;
string d2;
string s_txt = DisPlay.Text;
int space = s_txt.IndexOf(' ');
string s1 = s_txt.Substring(0, space).Trim(); //将第一个数字和空格合赋给字符串s1
char opration = Convert.ToChar(s_txt.Substring((space + 1), 1)); //运算符
string s2 = s_txt.Substring(space + 3); //将第二个数字赋给字符串s2
if (this.OCT.Checked) //八进制
{
int i = System.Convert.ToInt32(s1, 8);
int j = System.Convert.ToInt32(s2, 8);
switch (opration)
{
case '+':
d1 = i + j;
d2 = System.Convert.ToString(d1, 8);
break;
case '-':
d1 = i - j;
d2 = System.Convert.ToString(d1, 8);
break;
case '*':
d1 = i * j;
d2 = System.Convert.ToString(d1, 8);
break;
case '/':
if (j == 0)
{
throw new ApplicationException();
}
else
{
d1 = i / j;
d2 = System.Convert.ToString(d1, 8);
}
break;
default:
throw new ApplicationException();
}
DisPlay.Text = d2;
DisPlay.Focus();
preAnswer = System.Convert.ToInt32(d2, 8);
}
if (this.HEX.Checked)//十六进制
{
int i = System.Convert.ToInt32(s1, 16);
int j = System.Convert.ToInt32(s2, 16);
switch (opration)
{
case '+':
d1 = i + j;
d2 = System.Convert.ToString(d1, 16);
break;
case '-':
d1 = i - j;
d2 = System.Convert.ToString(d1, 16);
break;
case '*':
d1 = i * j;
d2 = System.Convert.ToString(d1, 16);
break;
case '/':
if (j == 0)
{
throw new ApplicationException();
}
else
{
d1 = i / j;
d2 = System.Convert.ToString(d1, 16);
}
break;
default:
throw new ApplicationException();
}
DisPlay.Text = d2.ToUpper();
DisPlay.Focus();
DisPlay.Select(DisPlay.TextLength, 0);
preAnswer = System.Convert.ToInt32(d2, 16);
}
if (this.BIN.Checked)//二进制
{
int i = System.Convert.ToInt32(s1, 2);
int j = System.Convert.ToInt32(s2, 2);
switch (opration)
{
case '+':
d1 = i + j;
d2 = System.Convert.ToString(d1, 2);
break;
case '-':
d1 = i - j;
d2 = System.Convert.ToString(d1, 2);
break;
case '*':
d1 = i * j;
d2 = System.Convert.ToString(d1, 2);
break;
case '/':
if (j == 0)
{
throw new ApplicationException();
}
else
{
d1 = i / j;
d2 = System.Convert.ToString(d1, 2);
}
break;
default:
throw new ApplicationException();
}
DisPlay.Text = d2;
DisPlay.Focus();
DisPlay.Select(DisPlay.TextLength, 0);
preAnswer = System.Convert.ToInt32(d2, 2);
}
if (this.DEC.Checked)//十进制
{
double d;
double a1 = Convert.ToDouble(s1);
double a2 = Convert.ToDouble(s2);
switch (opration)
{
case '+':
d = a1 + a2;
break;
case '-':
d = a1 - a2;
break;
case '*':
d = a1 * a2;
break;
case '/':
if (a2 == 0)
{
throw new ApplicationException();
}
else
{
d = a1 / a2;
}
break;
default:
throw new ApplicationException();
}
DisPlay.Text = d.ToString();
DisPlay.Focus();
DisPlay.Select(DisPlay.TextLength, 0);
preAnswer = (int)d;
}
}
public void setMouse()
{
DisPlay.Focus();//给richTextBox焦点
DisPlay.Select(DisPlay.TextLength, 0);
}
