private void buttonClear_Click(object sender, EventArgs e)
{
DialogResult confirmDialog = MessageBox.Show("Are you sure you want to clear the image?", "Clearing the Image", MessageBoxButtons.YesNo);
if (confirmDialog == DialogResult.Yes)
{
// clearing all drawings and loaded image
list.Clear();
panelMain.BackgroundImage = null;
this.tmpEllipse = null;
this.tmpLine = null;
this.tmpRectangle = null;
panelMain.Invalidate();
}
}
private void panelMain_MouseUp(object sender, MouseEventArgs e)
{
if (this.mouseDown == true)
{
// clearing the cursor information text box
toolStripStatusLabelCoordinates.Text = "";
this.mouseDown = false;
// adding created line to the list
if (radioButtonLine.Checked == true)
{
this.tmpLine.Pen = this.pen;
list.Add(this.tmpLine);
this.tmpLine = null;
}
// adding created rectangle to the list
if (radioButtonRectangle.Checked == true)
{
this.tmpRectangle.Pen = this.pen;
this.tmpRectangle.Fill = this.fillColour;
list.Add(this.tmpRectangle);
this.tmpRectangle = null;
}
// adding created ellipse to the list
if (radioButtonEllipse.Checked == true)
{
this.tmpEllipse.Pen = this.pen;
this.tmpEllipse.Fill = this.fillColour;
list.Add(this.tmpEllipse);
this.tmpEllipse = null;
}
panelMain.Invalidate();
}
}
/// <summary>
/// Opening a new file ensure object passed is new and using a try statement
/// we will try to open the file. If the test pass then it will try to read the file
/// and put the data from file into data members ( DtawObjects class).
/// </summary>
/// <param name="filename"></param>
/// <param name="drawObjectHistory"></param>
/// <returns>status</returns>
public static bool OpenSETPaintFile(string filename, List<DrawObject> drawObjectHistory)
{
BinaryReader openFile;
byte tempByte = 0;
DrawObject drawObject = new DrawObject();
bool status = true;
drawObjectHistory.Clear(); /*opening a new file ensure object passed is new*/
try
{
openFile = new BinaryReader(File.Open(filename, FileMode.Open, FileAccess.Read));
}
catch (Exception)
{
return false;
}
try
{
if(openFile.ReadByte() != 58) /*read and test file magic number*/
{
return false;
}
/*loop and check if its a line /Rectangle or ellipse and put the values into
data members.*/
while (true)
{
tempByte = openFile.ReadByte();
if(tempByte == (byte)DrawObjectType.Line)
{
drawObject = new Line();
}
else if(tempByte == (byte)DrawObjectType.Rectangle)
{
drawObject = new RectangleShape();
}
else if(tempByte == (byte)DrawObjectType.Ellipse)
{
drawObject = new Ellipse();
}
drawObject.startPoint = new Point(openFile.ReadInt32(), openFile.ReadInt32());
drawObject.endPoint = new Point(openFile.ReadInt32(), openFile.ReadInt32());
drawObject.fillColour = Color.FromArgb(openFile.ReadInt32());
drawObject.lineColour = Color.FromArgb(openFile.ReadInt32());
drawObject.lineThickness = openFile.ReadInt32();
drawObjectHistory.Add(drawObject);
}
}
catch (EndOfStreamException)
{
status = true;
}
catch (Exception)
{
status = false;
}
finally
{
openFile.Close();
}
return status;
}
private void panelMain_MouseDown(object sender, MouseEventArgs e)
{
toolStripStatusLabelCoordinates.Text = "X :" + e.X.ToString() + " Y:" + e.Y.ToString();
this.starting = new Point(e.X, e.Y);
this.tmpPoint = new Point(e.X, e.Y);
this.mouseDown = true;
if (radioButtonEllipse.Checked == true)
{
this.tmpLine = null;
this.tmpEllipse = new Ellipse(this.starting.X, this.starting.Y, this.tmpPoint.X, this.tmpPoint.Y, Color.Transparent, this.dashPen);
this.tmpRectangle = null;
}
else if (radioButtonLine.Checked == true)
{
this.tmpLine = new Line(this.starting, this.tmpPoint, this.dashPen);
this.tmpEllipse = null;
this.tmpRectangle = null;
}
else if (radioButtonRectangle.Checked == true)
{
this.tmpLine = null;
this.tmpEllipse = null;
this.tmpRectangle = new Rectangle(this.starting.X, this.starting.Y, this.tmpPoint.X, this.tmpPoint.Y, Color.Transparent, this.dashPen);
}
}
/************************** Drawing Shape Related Events **************************/
private void pnDrawScreen_MouseDown(object sender, MouseEventArgs e)
{
this.mouseDown = true;
if (rbLine.Checked == true)
{
initialPoint = pnDrawScreen.PointToClient(Cursor.Position); //Get the starting point of the line
endPoint = pnDrawScreen.PointToClient(Cursor.Position);
newLineShape = new Line(initialPoint, endPoint);
newLineShape.MyPen.Color = penType.Color;
newLineShape.MyBrush.Color = brushColour.Color;
newLineShape.MyPen.Width = penType.Width;
newLineShape.MyPen.DashPattern = new float[] {5F, 5F, 5F, 5F};
drawLineShape = true; //Handle line
drawRectangleShape = false;
drawEllipseShape = false;
X = e.X;
Y = e.Y;
toolStripStatusLabel1.Text = "X: " + X.ToString() + " Y: " + Y.ToString();
}
else if(rbRectangle.Checked == true)
{
initialPoint = pnDrawScreen.PointToClient(Cursor.Position); //Get the starting point of the line
endPoint = pnDrawScreen.PointToClient(Cursor.Position);
newRectangleShape = new Rectangle(initialPoint, endPoint);
newRectangleShape.MyPen.Color = penType.Color;
newRectangleShape.MyBrush.Color = brushColour.Color;
newRectangleShape.MyPen.Width = penType.Width;
newRectangleShape.MyPen.DashPattern = new float[] {5F, 5F, 5F, 5F};
drawRectangleShape = true; //Handle rectangle
drawLineShape = false;
drawEllipseShape = false;
X = e.X;
Y = e.Y;
toolStripStatusLabel1.Text = "X: " + X.ToString() + " Y: " + Y.ToString();
}
else if(rbEllipse.Checked == true)
{
initialPoint = pnDrawScreen.PointToClient(Cursor.Position); //Get the starting point of the line
endPoint = pnDrawScreen.PointToClient(Cursor.Position);
newEllipseShape = new Ellipse(initialPoint, endPoint);
newEllipseShape.MyPen.Color = penType.Color;
newEllipseShape.MyBrush.Color = brushColour.Color;
newEllipseShape.MyPen.Width = penType.Width;
newEllipseShape.MyPen.DashPattern = new float[] { 5F, 5F, 5F, 5F };
drawEllipseShape = true; //Handle ellipse
drawLineShape = false;
drawRectangleShape = false;
X = e.X;
Y = e.Y;
toolStripStatusLabel1.Text = "X: " + X.ToString() + " Y: " + Y.ToString();
}
}
