public void BringShapeToFront(Shape frontShape)
{
foreach (Shape shape in List)
{
shape.ZOrder++;
}
frontShape.ZOrder = 0;
}
public void SendShapeToBack(Shape backShape)
{
int maxZOrder = 0;
foreach (Shape shape in List)
{
if (shape.ZOrder > maxZOrder) maxZOrder = shape.ZOrder;
}
maxZOrder++;
backShape.ZOrder = maxZOrder;
}
public void Add(Shape shapeToAdd)
{
// Reorder the shapes so the new shape is on top.
foreach (Shape shape in List)
{
shape.ZOrder++;
}
shapeToAdd.ZOrder = 0;
List.Add(shapeToAdd);
}
private void mnuNewShape_Click(object sender, System.EventArgs e)
{
// Create and configure the shape with some defaults.
Shape newShape = new Shape();
newShape.Size = new Size(40, 40);
newShape.ForeColor = Color.Coral;
// Configure the appropriate shape depending on the menu option selected.
if (sender == mnuRectangle)
{
newShape.Type = Shape.ShapeType.Rectangle;
}
else if (sender == mnuEllipse)
{
newShape.Type = Shape.ShapeType.Ellipse;
}
else if (sender == mnuTriangle)
{
newShape.Type = Shape.ShapeType.Triangle;
}
// To determine where to place the shape, you need to convert the
// current screen-based mouse coordinates into relative form coordinates.
newShape.Location = this.PointToClient(Control.MousePosition);
// Attach a context menu to the shape.
newShape.ContextMenuStrip = mnuSelectShape;
// Connect the shape to all its event handlers.
newShape.MouseDown += new MouseEventHandler(ctrl_MouseDown);
newShape.MouseMove += new MouseEventHandler(ctrl_MouseMove);
newShape.MouseUp += new MouseEventHandler(ctrl_MouseUp);
// Add the shape to the form.
this.Controls.Add(newShape);
}
public void Remove(Shape shapeToRemove)
{
List.Remove(shapeToRemove);
}
private void ClearSelectedShape()
{
if (currentShape != null)
{
currentShape.Selected = false;
// Make sure the display is updated to reflect
// newly de-selected shape.
// Only use if NO double-buffering.
Invalidate(currentShape.GetLargestPossibleRegion());
}
currentShape = null;
}