public void InsertAndCut(Bitmap item, int index)
{
if (index == 0)
{
AddToStart(item);
}
else if (index < 0 || index > Length)
{
}
else if (index == Length)
{
this.Add(item);
}
else if (index <= Length / 2)
{
L2Node tmp = new L2Node(item);
L2Node previous = first;
for (int i = 0; i < index - 1; i++)
{
previous = previous.Next;
}
tmp.Next = null;
previous.Next = tmp;
tmp.Previous = previous;
last = tmp;
Length = index + 1;
}
else
{
L2Node tmp = new L2Node(item);
L2Node previous = last;
for (int i = 0; i < Length - index; i++)
{
previous = previous.Previous;
}
tmp.Next = null;
previous.Next = tmp;
tmp.Previous = previous;
last = tmp;
Length = index + 1;
}
}
public void RemoveOfIndex(int index, int quantity)
{
if (index == 0)
{
this.RemoveFromStart(quantity);
}
else if (index < 0 || index > Length - 1)
{
}
else if (index == Length - quantity)
{
this.Remove(quantity);
}
else if (index <= Length / 2)
{
L2Node previous = first;
for (int i = 0; i < index - 1; i++)
{
previous = previous.Next;
}
L2Node next = previous;
for (int i = 0; i <= quantity; i++)
{
next = next.Next;
}
previous.Next = next;
next.Previous = previous;
Length -= quantity;
}
else
{
L2Node previous = last;
for (int i = 0; i < Length - index; i++)
{
previous = previous.Previous;
}
L2Node next = previous;
for (int i = 0; i <= quantity; i++)
{
next = next.Next;
}
previous.Next = next;
next.Previous = previous;
Length -= quantity;
}
}
public void Reverse()
{
L2Node current = first;
L2Node tmp = first;
first = last;
last = current;
while (current != null)
{
tmp = current.Next;
current.Next = current.Previous;
current.Previous = tmp;
current = tmp;
}
}
public void AddToStart(Bitmap a)
{
if (first != null)
{
first.Previous = new L2Node(a);
first.Previous.Next = first;
first = first.Previous;
Length++;
}
else
{
first = new L2Node(a);
last = first;
Length = 1;
}
}
public void Add(Bitmap a)
{
if (first == null)
{
first = new L2Node(a);
last = first;
Length = 1;
}
else
{
last.Next = new L2Node(a);
last.Next.Previous = last;
last = last.Next;
Length++;
}
}
public void RemoveFromStart()
{
if (first == last)
{
first = null;
last = null;
Length = 0;
}
else if (first == null)
{
}
else
{
first = first.Next;
first.Previous = null;
Length--;
}
}
public void Remove()
{
if (first == last)
{
first = null;
last = null;
Length = 0;
}
else if (first == null)
{
}
else
{
last.Previous.Next = null;
last = last.Previous;
Length--;
}
}
public void RemoveOfIndex(int index)
{
if (index == 0)
{
this.RemoveFromStart();
}
else if (index < 0 || index > Length - 1)
{
}
else if (index == Length - 1)
{
this.Remove();
}
else if (index <= Length / 2)
{
L2Node previous = first;
for (int i = 0; i < index - 1; i++)
{
previous = previous.Next;
}
previous.Next = previous.Next.Next;
previous.Next.Previous = previous;
Length--;
}
else
{
L2Node previous = last;
for (int i = 0; i < Length - index; i++)
{
previous = previous.Previous;
}
previous.Next = previous.Next.Next;
previous.Next.Previous = previous;
Length--;
}
}
public Bitmap this[int index]
{
get
{
if (index == Length - 1)
{
return(last.Value);
}
else if (index == 0)
{
return(first.Value);
}
else if (index < 0 || index > Length - 1)
{
return(Canvas.GetCanvas.currentBitmap);
}
else if (index <= Length / 2)
{
L2Node current = first;
for (int i = 0; i < index; i++)
{
current = current.Next;
}
return(current.Value);
}
else
{
L2Node current = last;
for (int i = 0; i < Length - 1 - index; i++)
{
current = current.Previous;
}
return(current.Value);
}
}
set
{
if (index == Length - 1)
{
last.Value = value;
}
else if (index == 0)
{
first.Value = value; // 5-9 изменение по индексу
}
else if (index < 0 || index > Length - 1)
{
}
else if (index <= Length / 2)
{
L2Node current = first;
for (int i = 0; i < index; i++)
{
current = current.Next;
}
current.Value = value;
}
else
{
L2Node current = last;
for (int i = 0; i < Length - 1 - index; i++)
{
current = current.Previous;
}
current.Value = value;
}
}
}
public L2List(Bitmap a)
{
first = new L2Node(a);
last = first;
Length = 1;
}
public L2List()
{
first = null;
last = null;
Length = 0;
}
public L2Node(Bitmap value)
{
Value = value;
Next = null;
Previous = null;
}
public L2Node()
{
Next = null;
Previous = null;
}
