//draw shape method
public void DrawShape(IGraphics graphics)
{
DoDrawShape(graphics);
if (IsSelected)
{
graphics.DrawBorder(TopLeftPoint, BottomRightPoint);
}
}
//draw Shapes
public void DrawShapes(IGraphics graphics)
{
graphics.ClearCanvas();
foreach (Shape shape in Shapes)
{
shape.DrawShape(graphics);
}
if (operationShape != null)
{
operationShape.DrawShape(graphics);
}
}
//a virutal function to draw shape
protected virtual void DoDrawShape(IGraphics graphics)
{
}
//draw all shapes
public void DrawShapes(IGraphics graphics)
{
PaintModel.DrawShapes(graphics);
}
//rectangle draw
protected override void DoDrawShape(IGraphics graphics)
{
graphics.DrawRectangle(TopLeftPoint, BottomRightPoint);
}