public Bitmap PfsBitmap(PfsByte pfsByte)
{
var pfsBitmap = new Bitmap(36, 36);
pfsBitmap.SetResolution(100, 100);
var g = Graphics.FromImage(pfsBitmap);
DrawPfsPage(g, pageRectangle, pfsByte);
return(pfsBitmap);
}
public static PfsByte Parse(byte data)
{
var pfsByte = new PfsByte();
var bitArray = new BitArray(new[] { data });
pfsByte.GhostRecords = bitArray[3];
pfsByte.Iam = bitArray[4];
pfsByte.Mixed = bitArray[5];
pfsByte.Allocated = bitArray[6];
pfsByte.PageSpaceFree = (SpaceFree)(data & 7);
return(pfsByte);
}
/// <summary>
/// Refreshes the allocation status from the various allocation pages
/// </summary>
/// <param name="pageAddress">The page address.</param>
private void RefreshAllocationStatus(PageAddress pageAddress)
{
Image unallocated = ExtentColour.KeyImage(Color.Gainsboro);
Image gamAllocated = ExtentColour.KeyImage(Color.FromArgb(172, 186, 214));
Image sGamAllocated = ExtentColour.KeyImage(Color.FromArgb(168, 204, 162));
Image dcmAllocated = ExtentColour.KeyImage(Color.FromArgb(120, 150, 150));
Image bcmAllocated = ExtentColour.KeyImage(Color.FromArgb(150, 120, 150));
gamPictureBox.Image = Page.AllocationStatus(PageType.Gam) ? unallocated : gamAllocated;
sGamPictureBox.Image = Page.AllocationStatus(PageType.Sgam) ? sGamAllocated : unallocated;
dcmPictureBox.Image = Page.AllocationStatus(PageType.Dcm) ? dcmAllocated : unallocated;
bcmPictureBox.Image = Page.AllocationStatus(PageType.Bcm) ? bcmAllocated : unallocated;
gamTextBox.Text = Allocation.AllocationPageAddress(pageAddress, PageType.Gam).ToString();
sgamTextBox.Text = Allocation.AllocationPageAddress(pageAddress, PageType.Sgam).ToString();
dcmTextBox.Text = Allocation.AllocationPageAddress(pageAddress, PageType.Dcm).ToString();
bcmTextBox.Text = Allocation.AllocationPageAddress(pageAddress, PageType.Bcm).ToString();
pfsTextBox.Text = Allocation.AllocationPageAddress(pageAddress, PageType.Pfs).ToString();
pfsByte = Page.PfsStatus();
pfsPanel.Invalidate();
}
public void DrawPfsPage(Graphics g, Rectangle rect, PfsByte pfsByte)
{
var spaceFree = string.Empty;
var spaceUsedWidth = 0;
var indLen = (rect.Height / 3);
var pfsRect = new Rectangle(rect.X, rect.Y, rect.Width, indLen);
var iamRect = new Rectangle(rect.X + 1, rect.Y + pfsRect.Height, indLen, indLen);
var mixedRect = new Rectangle(rect.X + 1 + iamRect.Width, rect.Y + pfsRect.Height, indLen, indLen);
var ghostRect = new Rectangle(rect.X + 1 + iamRect.Width * 2, rect.Y + pfsRect.Height, indLen, indLen);
var spaceRect = new Rectangle(rect.X, mixedRect.Y + mixedRect.Height + 1, rect.Width, indLen + 1);
if (pfsByte.Allocated)
{
g.FillRectangle(pfsAllocatedBrush, pfsRect);
}
if (pfsByte.Iam)
{
g.FillRectangle(pfsIamBrush, iamRect);
}
if (pfsByte.Mixed)
{
g.FillRectangle(pfsMixedBrush, mixedRect);
}
if (pfsByte.GhostRecords)
{
g.FillRectangle(pfsGhostBrush, ghostRect);
}
switch (pfsByte.PageSpaceFree)
{
case SpaceFree.Empty:
spaceFree = "0%";
spaceUsedWidth = 0;
break;
case SpaceFree.FiftyPercent:
spaceFree = "50%";
spaceUsedWidth = (int)(rect.Width * 0.5);
break;
case SpaceFree.EightyPercent:
spaceFree = "80%";
spaceUsedWidth = (int)(rect.Width * 0.8);
break;
case SpaceFree.NinetyFivePercent:
spaceFree = "95%";
spaceUsedWidth = (int)(rect.Width * 0.95);
break;
case SpaceFree.OneHundredPercent:
spaceFree = "100%";
spaceUsedWidth = rect.Width;
break;
}
g.FillRectangle(pfsSpaceBrush, new Rectangle(spaceRect.X, spaceRect.Y, spaceUsedWidth, spaceRect.Height));
if (displayAllocationText)
{
TextRenderer.DrawText(g,
spaceFree,
pfsFont,
spaceRect,
Color.Black,
TextFormatFlags.HorizontalCenter | TextFormatFlags.VerticalCenter);
}
g.DrawRectangle(borderPen, iamRect);
g.DrawRectangle(borderPen, mixedRect);
g.DrawRectangle(borderPen, ghostRect);
g.DrawRectangle(pageBorderPen, rect);
}
