// Return a copy of the graphic
public override GraphicObject Copy(int _id)
{
// Create a new freehand line with the same attributes
FreehandLine fhl = new FreehandLine(origColour, thickness, _id);
// Add all the points to the new freehandline
foreach (Point p in lines)
{
fhl.Update(p);
}
return(fhl);
}
// Load an existing file
private void button13_Click(object sender, EventArgs e)
{
OpenFileDialog ofd = new OpenFileDialog();
if (ofd.ShowDialog() == DialogResult.OK)
{
try
{
// Open the text file using a stream reader
using (StreamReader sr = new StreamReader(ofd.FileName))
{
// Clear the old graphics
graphicObjectList.Clear();
string textLine;
while ((textLine = sr.ReadLine()) != null)
{
// Decode the object type
string type = textLine.TrimStart('{').Split(':')[1].Replace("\"", "").Split(',')[0];
// Determine type of object and then create the object and add it to the list of objects to be drawn
if (type.ToLower() == "line")
{
Line obj = new Line();
obj.Decode(textLine);
graphicObjectList.Add(obj);
}
else if (type.ToLower() == "freehandline")
{
FreehandLine obj = new FreehandLine();
obj.Decode(textLine);
graphicObjectList.Add(obj);
}
else if (type.ToLower() == "rectangle")
{
Rectangle obj = new Rectangle();
obj.Decode(textLine);
graphicObjectList.Add(obj);
}
else if (type.ToLower() == "square")
{
Square obj = new Square();
obj.Decode(textLine);
graphicObjectList.Add(obj);
}
else if (type.ToLower() == "ellipse")
{
Ellipse l = new Ellipse();
l.Decode(textLine);
graphicObjectList.Add(l);
}
else if (type.ToLower() == "circle")
{
Circle obj = new Circle();
obj.Decode(textLine);
graphicObjectList.Add(obj);
}
else if (type.ToLower() == "polygon")
{
Polygon obj = new Polygon();
obj.Decode(textLine);
graphicObjectList.Add(obj);
}
}
}
Redraw();
}
catch (Exception exc)
{
MessageBox.Show("An error has occured./r/n" + exc.Message);
}
}
}