public Calculator()
{
font = Resources.GetFont(Resources.FontResources.NinaB);
ButtonHelper.Current.OnButtonPress += Current_OnButtonPress;
BackgroundColor = Color.White;
ForegroundColor = Color.Black;
ButtonHeight = font.Height;
ButtonWidth = font.CharWidth('8')*2;
//each button has a height of 15
//we want to align from the bottom up
int leftPadding = 7;
Buttons = new ArrayList();
int bottom = Program.AgentSize - ButtonHeight - ButtonBorder*2;
int left = leftPadding;
int width = ButtonWidth + ButtonBorder;
char[] map = new char[]
{
'0', '.', 'x', '/', '=',
'1', '2', '3', '-', '=',
'4', '5', '6', '+', '=',
'7', '8', '9', 'C', '='
};
for (int i = 0; i <= map.Length - 1; i++)
{
var newButton = new CalculatorButton()
{
Point = new Point(left, bottom),
Text = map[i].ToString()
};
Buttons.Add(newButton);
if (SelectedButton == null)
{
SelectedButton = newButton;
newButton.Selected = true;
}
if (i == 4 || i == 9 || i == 14 || i == 19)
{
bottom = bottom - ButtonHeight - ButtonBorder*2;
left = leftPadding;
}
else
{
left = left + (ButtonWidth + ButtonBorder + 4);
}
}
}
private void Current_OnButtonPress(Buttons button, Microsoft.SPOT.Hardware.InterruptPort port,
ButtonDirection direction, DateTime time)
{
if (direction == ButtonDirection.Up)
{
if (button == SimpleCalculator.Buttons.TopRight)
{
Debug.Print("Button press up");
for (int i = 0; i < Buttons.Count - 1; i++)
{
CalculatorButton current = Buttons[i] as CalculatorButton;
if (current.Selected && i < Buttons.Count)
{
SelectedButton = Buttons[i + 1] as CalculatorButton;
current.Selected = false;
SelectedButton.Selected = true;
Debug.Print("was:" + current.Text + " is:" + SelectedButton.Text);
break;
}
}
Render(Screen);
}
if (button == SimpleCalculator.Buttons.BottomRight)
{
Debug.Print("Button press down");
for (int i = Buttons.Count - 1; i >= 0; i--)
{
CalculatorButton current = Buttons[i] as CalculatorButton;
if (current.Selected && i > 0)
{
SelectedButton = Buttons[i - 1] as CalculatorButton;
current.Selected = false;
SelectedButton.Selected = true;
Debug.Print("was:" + current.Text + " is:" + SelectedButton.Text);
break;
}
}
Render(Screen);
}
if (button == SimpleCalculator.Buttons.MiddleRight)
{
Debug.Print("Button press select:" + SelectedButton.Text);
var text = SelectedButton.Text;
if (input !="" && op == "" && (text == "x" || text == "/" || text == "+" || text == "-"))
{
Debug.Print("OP GO");
secondInput = input;
input = "";
op = text;
}
else if (text == "C")
{
Debug.Print("Clear");
secondInput = "";
op = "";
input = "";
}
else if (op !="" && input != "" && secondInput !="" && text == "=")
{
Debug.Print("CALC");
double left = 0;
double right = 0;
if (Parse.TryParseDouble(secondInput, out left) && Parse.TryParseDouble(input, out right))
{
try
{
switch (op)
{
case "x":
secondInput = (left*right).ToString("f2");
break;
case "/":
secondInput = (left/right).ToString("f2");
break;
case "+":
secondInput = (left + right).ToString("f2");
break;
case "-":
secondInput = (left - right).ToString("f2");
break;
default:
break;
}
op = "";
input = "";
}
catch (Exception)
{
secondInput = "";
op = "";
input = "Err.";
}
}
}
else
{
Debug.Print("Dumped to other");
int value = 0;
if (Parse.TryParseInt(text, out value) || text == ".")
{
Debug.Print("numeric");
input = input + SelectedButton.Text;
}
}
Render(Screen);
}
}
}