/**********************************************************************
*********************************************************************/
private static void DrawGrayArrow(int index, float relativeFragmentSize)
{
// determine position of fragment block
List <FragmentBlock> allFragmentsList = AllocationStrategiesAlgorithm.GetAllFragmentsList();
float mX1 = 0.1f; // memory bound x1
int stepsSoFar = 0;
FragmentBlock fragment = null;
for (int i = 0; i <= index; i++)
{
fragment = allFragmentsList.ElementAt(i);
stepsSoFar += fragment.GetSize();
}
float fragmentStart = mX1 + (stepsSoFar * relativeFragmentSize) - (fragment.GetSize() * relativeFragmentSize);
float fragmentEnd = mX1 + (stepsSoFar * relativeFragmentSize);
float xPosition = fragmentEnd - (fragmentEnd - fragmentStart) / 2; // position of text in the middle of fragment
// draw the arrow
float arrowTip = 0.725f;
canvas.DrawLine(xPercent(xPosition), yPercent(arrowTip + 0.125f), xPercent(xPosition), yPercent(arrowTip), sk_ArrowGray);
SKPath arrow = new SKPath();
arrow.MoveTo(xPercent(xPosition), yPercent(arrowTip));
arrow.RLineTo(-yPercent(0.015f), +yPercent(0.03f));
arrow.RLineTo(+yPercent(0.03f), 0);
arrow.RLineTo(-yPercent(0.015f), -yPercent(0.03f));
arrow.Close();
canvas.DrawPath(arrow, sk_ArrowGray);
}
/**********************************************************************
*********************************************************************/
private static void DrawRedArrow(float relativeFragmentSize)
{
// determine position of fragment block
int index = AllocationStrategiesAlgorithm.GetCurrentIndex(); //TODO: nach merge könnte der index nicht mehr existieren
List <FragmentBlock> allFragmentsList = AllocationStrategiesAlgorithm.GetAllFragmentsList();
float mX1 = 0.1f; // memory bound x1
int stepsSoFar = 0;
FragmentBlock fragment = null;
for (int i = 0; i <= index; i++)
{
fragment = allFragmentsList.ElementAt(i);
stepsSoFar += fragment.GetSize();
}
float fragmentStart = mX1 + (stepsSoFar * relativeFragmentSize) - (fragment.GetSize() * relativeFragmentSize);
float fragmentEnd = mX1 + (stepsSoFar * relativeFragmentSize);
float xPosition = fragmentEnd - (fragmentEnd - fragmentStart) / 2; // position of text in the middle of fragment
// draw the arrow
float arrowTip = 0.275f;
canvas.DrawLine(xPercent(xPosition), yPercent(arrowTip - 0.125f), xPercent(xPosition), yPercent(arrowTip), sk_ArrowRed);
SKPath arrow = new SKPath();
arrow.MoveTo(xPercent(xPosition), yPercent(arrowTip));
arrow.RLineTo(yPercent(0.015f), -yPercent(0.03f));
arrow.RLineTo(-yPercent(0.03f), 0);
arrow.RLineTo(yPercent(0.015f), yPercent(0.03f));
arrow.Close();
canvas.DrawPath(arrow, sk_ArrowRed);
}
/**********************************************************************
*********************************************************************/
private static float DrawMemory()
{
// memory bounds in percent of the canvas
float mX1 = 0.1f;
float mX2 = 0.9f;
float mY1 = 0.3f;
float mY2 = 0.7f;
float mWidth = mX2 - mX1;
float mHeight = mY2 - mY1;
int totalMemorySize = AllocationStrategiesAlgorithm.GetTotalMemorySize();
List <FragmentBlock> allFragmentsList = AllocationStrategiesAlgorithm.GetAllFragmentsList();
float relativeFragmentSize = mWidth / totalMemorySize;
int stepsSoFar = 0;
foreach (FragmentBlock fragment in allFragmentsList)
{
// fragment size of 1 gets displayed as a .
String fragmentSize = fragment.GetSize().ToString();
if (fragmentSize == "1")
{
fragmentSize = "•";
}
stepsSoFar += fragment.GetSize();
float fragmentStart = mX1 + (stepsSoFar * relativeFragmentSize) - (fragment.GetSize() * relativeFragmentSize);
float fragmentEnd = mX1 + (stepsSoFar * relativeFragmentSize);
float xText = fragmentEnd - (fragmentEnd - fragmentStart) / 2; // position of text in the middle of fragment
if (fragment.IsFree())
{
// draw size of fragment in the middle of memory
canvas.DrawText(fragmentSize, xPercent(xText), yPercent(0.5f), sk_Text);
}
else
{
// draw size of fragment beneath the memory
//canvas.DrawText(fragmentSize, xPercent(xText), yPercent(0.8f), sk_TextWhite);
canvas.DrawText(fragmentSize, xPercent(xText), yPercent(0.8f), sk_Text);
// fill in used space
SKRect usedSpace = new SKRect(xPercent(fragmentStart), yPercent(mY1), xPercent(fragmentEnd), yPercent(mY2)); //left x1 top y1 right x2 bottom y2
canvas.DrawRect(usedSpace, sk_UsedSpace);
}
}
// draw the outlines of the memory box
SKRect sk_memory = new SKRect(xPercent(mX1), yPercent(mY1), xPercent(mX2), yPercent(mY2));
canvas.DrawRect(sk_memory, sk_Black);
canvas.DrawText("free", xPercent(0.05f), yPercent(0.5f), sk_Text);
//canvas.DrawText("used", xPercent(0.05f), yPercent(0.8f), sk_TextWhite);
canvas.DrawText("used", xPercent(0.05f), yPercent(0.8f), sk_Text);
return(relativeFragmentSize);
}
