// unaryOps
private void btnSqrtOp_Click(object sender, EventArgs e)
{
calcOperator = "sqrt";
isCalcOperatorActive = true;
if (resultValue != 0)
{
btnEq.PerformClick();
resultValue = Double.Parse(textBoxRes.Text);
}
else
{
if (textBoxRes.Text.Equals("x") || textBoxRes.Text.Equals("y") || textBoxRes.Text.Equals("z"))
{
using (var form = new CalculatorValueForVariables())
{
var result = form.ShowDialog();
if (result == DialogResult.OK)
{
resultValue = form.varValue;
}
}
}
else
{
resultValue = Double.Parse(textBoxRes.Text);
}
labelCurrentExpr.Text = calcOperator + "(" + resultValue + ")";
}
}
private void btnClassicOp_Click(object sender, EventArgs e)
{
Button button = (Button)sender;
calcOperator = button.Text;
isCalcOperatorActive = true;
if (resultValue != 0)
{
btnEq.PerformClick();
labelCurrentExpr.Text = resultValue + " " + calcOperator + " ";
}
else
{
if (textBoxRes.Text.Equals("x") || textBoxRes.Text.Equals("y") || textBoxRes.Text.Equals("z"))
{
using (var form = new CalculatorValueForVariables())
{
var result = form.ShowDialog();
if (result == DialogResult.OK)
{
resultValue = form.varValue;
}
}
labelCurrentExpr.Text = textBoxRes.Text + " " + calcOperator + " ";
}
else
{
resultValue = Double.Parse(textBoxRes.Text);
labelCurrentExpr.Text = resultValue + " " + calcOperator + " ";
}
}
}
// evaluator
private void btnEq_Click(object sender, EventArgs e)
{
Expression expression;
Double sndArgument = new Double();
if (textBoxRes.Text.Equals("x") || textBoxRes.Text.Equals("y") || textBoxRes.Text.Equals("z"))
{
using (var form = new CalculatorValueForVariables())
{
var result = form.ShowDialog();
if (result == DialogResult.OK)
{
sndArgument = form.varValue;
}
}
}
else
{
sndArgument = Double.Parse(textBoxRes.Text);
}
switch (calcOperator)
{
case "sqrt":
if (!(resultValue < 0))
{
expression = new Sqrt(resultValue);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
}
else
{
textBoxRes.Text = "Can't calculate sqrt of a neg num!";
}
break;
case "neg":
expression = new Opposite(resultValue);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "cos":
expression = new Cosinus(resultValue);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "sin":
expression = new Sinus(resultValue);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "exp":
expression = new Exponentation(resultValue);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "abs":
expression = new Abs(resultValue);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "log":
if (resultValue > 0)
{
expression = new Log(resultValue);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
}
else
{
textBoxRes.Text = "Can't calculate log of a neg num!";
}
break;
case "+":
labelCurrentExpr.Text += sndArgument;
expression = new Addition(resultValue, sndArgument);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "-":
labelCurrentExpr.Text += sndArgument;
expression = new Subtraction(resultValue, sndArgument);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "*":
labelCurrentExpr.Text += sndArgument;
expression = new Multiplication(resultValue, sndArgument);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "/":
labelCurrentExpr.Text += sndArgument;
if (!sndArgument.Equals(0))
{
expression = new Division(resultValue, sndArgument);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
}
else
{
textBoxRes.Text = "Can't divide by 0";
}
break;
case "^":
labelCurrentExpr.Text += sndArgument;
expression = new Power(resultValue, sndArgument);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
case "%":
labelCurrentExpr.Text += sndArgument;
expression = new Modulo(resultValue, sndArgument);
finalValue = expression.Evaluate();
textBoxRes.Text = finalValue.ToString();
break;
}
resultValue = 0;
labelCurrentExpr.Text = "";
}