/// <summary>
/// Hightlights the relevant shape to show it is selected
/// </summary>
public static void HighlightShapeInList()
{
//draws to the canvas of the main form
using Graphics g = Graphics.FromImage(MainForm.drawingRegion);
//if the shape list is not empty and the index is less than the amount of shapes in the list
if (MainForm.shapes.Count > -1 && index < MainForm.shapes.Count)
{
//if the index is greater than 0, highlight the appropriate shape
if (index >= 0)
{
//switch statement for the shape type
switch (MainForm.shapes[index].Type)
{
case "Square":
//square object to replace the old square
Square replacementSquare = new Square(MainForm.shapes[index].Start, MainForm.shapes[index].End, MainForm.shapes[index].Colour);
//draw the replacement square with the highlight pen
replacementSquare.HighlightSqaure(new Pen(replacementSquare.Colour));
//calculate the centre of the new square for rotation
ShapeMovementForm.CalculateSquareCenter(replacementSquare);
break;
case "Circle":
//circle object to replace the old circle
Circle replacementCircle = new Circle(MainForm.shapes[index].Colour, MainForm.shapes[index].Start, MainForm.shapes[index].End, MainForm.shapes[index].Radius);
//draw the circle
replacementCircle.Highlight(MainForm.shapes[ShapeSelectionForm.index].Colour);
break;
case "Triangle":
//triangle object to replace the old one
Triangle replacementTriangle = new Triangle(MainForm.shapes[index].Start, MainForm.shapes[index].End, MainForm.shapes[index].Colour);
//draw the replacement triangle
replacementTriangle.HighlightTriangle(new Pen(replacementTriangle.Colour));
//calculate the centre of the new triangle
ShapeMovementForm.CalculateTriangleCentre(replacementTriangle);
break;
}
//reset the drawing region
MainForm.ResetDrawingRegion();
}
}
}
/// <summary>
/// Opens a form to allow the user to move and rotate a shape
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnTransform_Click(object sender, EventArgs e)
{
if (!ShapeMovementForm.isOpen)
{
//if a shape is selcted, allow the user to move it
if (index != -1)
{
//if a shape is selected, open the form to move it
if (MainForm.ShapeSelected == true)
{
//create an object of the shape movement fornm
ShapeMovementForm shapeMovementForm = new ShapeMovementForm();
//open the shape movement form
shapeMovementForm.Show();
}
else
{
//if there are now shapes, inform the user
if (MainForm.shapes.Count == 0)
{
MessageBox.Show("There are no shapes to select.");
}
//if there are shapes, inform the user to select one
else
{
MessageBox.Show("Select a shape to transform.");
}
}
}
else
{
MessageBox.Show("Select a shape to transform.");
}
}
else
{
MessageBox.Show("Only one shape can be transformed at a time.");
}
}
/// <summary>
/// Triggers on clicking the delete button
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Deletebtn_Click(object sender, EventArgs e)
{
//draws to the canvas
using Graphics g = Graphics.FromImage(MainForm.drawingRegion);
//used to remove a shape from the canvas
Pen deletePen = new Pen(MainForm.Canvas.BackColor);
if (index != -1)
{
//if the shape list isn't empty and the index is not 1
if (MainForm.shapes.Count > 0 && index != -1)
{
//switch statement on the shape type
switch (MainForm.shapes[index].Type)
{
case "Square":
//square object to delete the old sqaure
Square deletetionSquare = new Square(MainForm.shapes[index].Start, MainForm.shapes[index].End, MainForm.shapes[index].Colour);
//draw the new square over the old square
deletetionSquare.DrawSqaure(deletePen);
break;
case "Circle":
//circle object to delete the old square
Circle deletionCircle = new Circle(MainForm.shapes[index].Colour, MainForm.shapes[index].Start, MainForm.shapes[index].End, MainForm.shapes[index].Radius);
//deletet the old circle
deletionCircle.Delete();
break;
case "Triangle":
//triangle object to delete the old triangle
Triangle deletionTrianlge = new Triangle(MainForm.shapes[index].Start, MainForm.shapes[index].End, MainForm.shapes[index].Colour);
//delete the old triangle
deletionTrianlge.DrawTriangle(deletePen);
break;
}
ShapeMovementForm.RepairAllOtherShapes();
//stops the shapes from re-appearing when the canvas is refreshed
MainForm.allShapes = (Bitmap)MainForm.drawingRegion.Clone();
//remove the shape from the list
MainForm.shapes.RemoveAt(index);
//set the index to -1 (no shape selected)
index = -1;
//reset the drawing region bitmap
MainForm.ResetDrawingRegion();
}
//remove the delete pen from memory
deletePen.Dispose();
}
else
{
MessageBox.Show("Select a shape to delete.");
}
}