/*******************************************************
* New File Menu
*
* Arguments: Object Sender and EventArgs e
* Return Type: void
* Use Case:
******************************************************/
private void newToolStripMenuItem_Click(object sender, EventArgs e)
{
lines.Clear();
strokes.Clear();
PaintCanvas.Image = null;
PaintCanvas.Refresh();
}
/*******************************************************
* Mouse Up Click
*
* Arguments: Object Sender and EventArgs e
* Return Type: void
* Use Case:
******************************************************/
private void PaintCanvas_MouseUp(object sender, MouseEventArgs e)
{
if (isLineSelected && !point1.IsEmpty && !point2.IsEmpty)
{
Line newLine = new Line(selectedPen, point1, point2);
lines.Add(newLine);
UndoStack.Push("Line");
PaintCanvas.Refresh();
point1 = Point.Empty;
point2 = Point.Empty;
}
if (isPencilSelected || isEraserSelected || isPaintSelected || isCustom)
{
strokes.Add(currentStroke);
UndoStack.Push("Stroke");
PaintCanvas.Refresh();
currentStroke = new Stroke(selectedPen, new List <Point>());
}
Cursor = Cursors.Default;
}
/*******************************************************
* Undo button Click
*
* Arguments: Object Sender and EventArgs e
* Return Type: void
* Use Case:
******************************************************/
private void UndoButton_Click(object sender, EventArgs e)
{
textBox1.Text = "Undo";
if (UndoStack.Count > 0)
{
string action = UndoStack.Pop();
PaintAction newAction;
switch (action)
{
case "Line":
newAction = lines[lines.Count - 1];
RedoStack.Push(newAction);
lines.RemoveAt(lines.Count - 1);
lines.TrimExcess();
break;
case "Stroke":
newAction = strokes[strokes.Count - 1];
RedoStack.Push(newAction);
strokes.RemoveAt(strokes.Count - 1);
strokes.TrimExcess();
break;
default:
Console.WriteLine("Undo Button Error!");
break;
}
}
PaintCanvas.Refresh();
}
/*******************************************************
* Mouse Move Event
*
* Arguments: Object Sender and EventArgs e
* Return Type: void
* Use Case:
******************************************************/
private void PaintCanvas_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left && (isPencilSelected || isEraserSelected || isPaintSelected))
{
currentStroke.Points.Add(new Point(e.Location.X - 10, e.Location.Y + 10));
PaintCanvas.Refresh();
}
}
/*******************************************************
* Redo button Click
*
* Arguments: Object Sender and EventArgs e
* Return Type: void
* Use Case:
******************************************************/
private void RedoButton_Click(object sender, EventArgs e)
{
textBox1.Text = "Redo";
if (RedoStack.Count > 0)
{
var action = RedoStack.Pop();
if (action is Line)
{
lines.Add((Line)action);
UndoStack.Push("Line");
PaintCanvas.Refresh();
}
if (action is Stroke)
{
strokes.Add((Stroke)action);
UndoStack.Push("Stroke");
PaintCanvas.Refresh();
}
}
}
