//CONSTRUCTOR
/*TODO(get buddySystem List through constructor) constructor with parameters is somehow not possible. give buddySystem List to constructor*/
public BuddySystemViewCell()
{
//note: List<BuddySystemBlock> buddySystem = BuddySystem.buddySystem would not copy the list
//note: buddySystem = new List<BuddySystemBlock>(BuddySystem.buddySystem); would not create new references
//since the paintsurface method get's called several times, even after the object was created,
//there has to be a constant copy of the original list at the time
//and since the upper way of copying the list keeps the same references to the original buddysystemblock objects
//it has to be copied manually
List <BuddySystemBlock> original = new List <BuddySystemBlock>(BuddySystem.buddySystem);
buddySystem = new List <BuddySystemBlock>();
for (int i = 0; i < original.Count; i++)
{
BuddySystemBlock b = new BuddySystemBlock(
original[i].GetBlockSize(),
original[i].GetBuddyNo());
if (original[i].GetFree() == false)
{
b.OccupyBlock(
original[i].GetProcessName(),
original[i].GetProcessSize());
}
buddySystem.Add(b);
}
this.processName = BuddySystem.currentProcess;
this.endProcess = BuddySystem.endProcess;
// crate the canvas
skiaview = new SKCanvasView();
skiaview.PaintSurface += PaintSurface;
//changing background color for better clarity
if (dari % 2 == 0)
{
skiaview.BackgroundColor = App._viewBackground;
}
else
{
skiaview.BackgroundColor = App._viewBackground;
}
dari++;
// assign the canvas to the cell
this.View = skiaview;
}
/**********************************************************************
*********************************************************************/
//splits the block at the index until it has the required size
public static void SplitBlock(int index, int requiredSize)
{
int blockSize = buddySystem[index].GetBlockSize();
//entferne Block an Index in der Liste
//Teile in zwei auf, solange bis blocksize = requiredsize entspricht
while (blockSize > requiredSize)
{
int dummy = blockSize / 2;
if (dummy >= requiredSize)
{
//split
List <int> buddyNoList = buddySystem[index].GetBuddyNoList();
buddySystem.Remove(buddySystem[index]);
BuddySystemBlock block1 = new BuddySystemBlock(dummy, 2);
BuddySystemBlock block2 = new BuddySystemBlock(dummy, 1);
block1.SetBuddyNoList(buddyNoList);
block2.SetBuddyNoList(buddyNoList);
buddySystem.Insert(index, block1);
buddySystem.Insert(index, block2);
}
blockSize = dummy;
}
}
