/// <summary>
/// Method to get the colour of the pen based on the combobox value
/// </summary>
private void GetPenColour()
{
switch (penBox.SelectedIndex)
{
case 0:
PenColourClass.PenColourSet("blue");
break;
case 1:
PenColourClass.PenColourSet("red");
break;
case 2:
PenColourClass.PenColourSet("green");
break;
case 3:
PenColourClass.PenColourSet("orange");
break;
case 4:
PenColourClass.PenColourSet("yellow");
break;
}
}
/// <summary>
/// Method to process all possible commands entered along with error handling for empty box and unregistered commands
/// </summary>
private void ProcessCommands()
{
// if combo box is selected, get the colour
if (penBox.SelectedIndex > -1)
{
GetPenColour();
}
// move to command
if (_commandList[0].Equals("moveto"))
{
try
{
if (_commandList.Length > 3)
{
MessageBox.Show(@"Too many parameters.");
}
else
{
try
{
MoveToClass.MoveTo(int.Parse(_commandList[1]),
int.Parse(_commandList[2]));
}
catch (FormatException)
{
MessageBox.Show(@"Parameters must be a number!");
}
}
}
catch (IndexOutOfRangeException) // catch if no number has been entered after command
{
MessageBox.Show(@"Must enter 2 numbers after command.");
}
}
// draw line commands
else if (_commandList[0].Equals("drawline"))
{
try
{
if (_commandList.Length > 3)
{
MessageBox.Show(@"Too many parameters.");
}
else
{
try
{
_lineDraw.DrawLine(int.Parse(_commandList[1]),
int.Parse(_commandList[2]));
}
catch (FormatException)
{
MessageBox.Show(@"Parameters must be a number!");
}
}
}
catch (IndexOutOfRangeException)
{
MessageBox.Show(@"Must enter 2 numbers after command.");
}
}
// draw square command
else if (_commandList[0].Equals("square"))
{
try
{
if (_commandList.Length > 2)
{
MessageBox.Show(@"Too many parameters.");
}
else
{
try
{
_squareDraw.DrawSquare(int.Parse(_commandList[1]));
}
catch (FormatException)
{
MessageBox.Show(@"Parameters must be a number!");
}
}
}
catch (IndexOutOfRangeException)
{
MessageBox.Show(@"Must enter a number after command.");
}
}
// draw rectangle command
else if (_commandList[0].Equals("rectangle"))
{
try
{
if (_commandList.Length > 3)
{
MessageBox.Show(@"Too many parameters.");
}
else
{
try
{
_rectangleDraw.DrawRectangle(int.Parse(_commandList[1]),
int.Parse(_commandList[2]));
}
catch (FormatException)
{
MessageBox.Show(@"Parameters must be a number!");
}
}
}
catch (IndexOutOfRangeException)
{
MessageBox.Show(@"Must enter 2 numbers after command.");
}
}
// draw circle command
else if (_commandList[0].Equals("circle"))
{
try
{
if (_commandList.Length > 2)
{
MessageBox.Show(@"Too many parameters.");
}
else
{
try
{
_circleDraw.DrawCircle(int.Parse(_commandList[1]));
}
catch (FormatException)
{
MessageBox.Show(@"Parameters must be a number!");
}
}
}
catch (IndexOutOfRangeException)
{
MessageBox.Show(@"Must enter a number after command.");
}
}
// set fill true command
else if (_commandList[0].Equals("fill"))
{
Fill.CheckFill(true);
fillCheckBox.Checked = true;
}
// set fill false command
else if (_commandList[0].Equals("filloff"))
{
Fill.CheckFill(false);
fillCheckBox.Checked = false;
}
// draw triangle command
else if (_commandList[0].Equals("triangle"))
{
try
{
if (_commandList.Length > 5)
{
MessageBox.Show(@"Too many parameters.");
}
else
{
try
{
_triangleDraw.DrawTriangle(int.Parse(_commandList[1]), int.Parse(_commandList[2]),
int.Parse(_commandList[3]), int.Parse(_commandList[4]));
}
catch (FormatException)
{
MessageBox.Show(@"Parameters must be a number!");
}
}
}
catch (IndexOutOfRangeException)
{
MessageBox.Show(@"Must enter 4 numbers after command.");
}
}
// change pen colour command
else if (_commandList[0].Equals("pencolour"))
{
PenColourClass.PenColourSet(_commandList[1]);
}
// reset pen position command
else if (_commandList[0].Equals("reset"))
{
Reset.CheckReset(true);
}
// clear bitmap
else if (_commandList[0].Equals("clear"))
{
ClearImage();
drawBox.Refresh();
}
// leave application
else if (_commandList[0].Equals("quit"))
{
Application.Exit();
}
// if nothing entered throw message
else if (_commandList[0] == String.Empty)
{
MessageBox.Show(@"No command entered!");
}
// if no command recognised show error
else
{
MessageBox.Show(@"Command not recognised!");
}
commandLine.Text = "";
Refresh();
}