public void drawMapView(Graphics g, PictureBox pb, long scrollPosition, ImageList icons)
{
// draw the relevant set of sector icons on to the picturebox
long totalSectors = i.Length / i.sectorSize;
int sectorsPerRow = pb.Width / sectorSquareSize;
int sectorsPerCol = pb.Height / sectorSquareSize;
int sectorsToDisplay = sectorsPerCol * sectorsPerRow;
long startSector = scrollPosition * sectorsPerRow;
sectorIDs = getSectorIDs(sectorsPerRow, sectorsPerCol, startSector);
Point p = new Point(0, 0);
long j = startSector;
Bitmap bmp;
Graphics gOff;
bmp = new Bitmap(pb.Width, pb.Height);
gOff = Graphics.FromImage(bmp);
map = new imageMap(i);
while (j < startSector + sectorsToDisplay)
{
for (int k = 0; k < sectorsPerRow; k++)
{
bool selected = false;
if (this.selectedSector == j + k)
{
selected = true;
SolidBrush outline = new SolidBrush(Color.Red);
gOff.FillRectangle(outline, p.X, p.Y, sectorSquareSize, sectorSquareSize);
}
SolidBrush b = getSectorType(j + k, map, selected);
gOff.FillRectangle(b, new Rectangle(p.X + 1, p.Y + 1, sectorSquareSize - 2, sectorSquareSize - 2));
p.X += sectorSquareSize;
}
p.Y += sectorSquareSize;
p.X = 0;
j += sectorsPerRow;
}
g.DrawImage(bmp, 0, 0);
gOff.Dispose();
}
private SolidBrush getSectorType(long sector, imageMap im, bool selected)
{
// look up a position in the partition map and return a
// colour-coded brush depending on the sector type
SolidBrush b;
imageMap.mapBlock block = im.sectorIsIn(sector);
string type = block.type.ToString();
if (sector > i.Length / i.sectorSize)
{
type = "";
}
switch (type)
{
case "GPT":
if (!selected)
{
b = new SolidBrush(Color.Green);
}
else
{
b = new SolidBrush(Color.LawnGreen);
}
break;
case "MBR":
if (!selected)
{
b = new SolidBrush(Color.DarkRed);
}
else
{
b = new SolidBrush(Color.Red);
}
break;
case "vol_unknown":
if (block.allocationMap != null)
{
// work out which bit in allocation map is the right one
// and display allocated/unallocated depending on its value
// there's an off-by-one error somewhere in here
long bitposition = (sector - block.location) / block.mapSectorsPerBlock;
long byteposition = bitposition / 8;
byte bits = block.allocationMap[byteposition];
long positioninbyte = bitposition % 8;
if (dataOperations.is_bit_set(bits, (short)positioninbyte))
{
if (!selected)
{
b = new SolidBrush(Color.CadetBlue);
}
else
{
b = new SolidBrush(Color.PowderBlue);
}
}
else
{
if (!selected)
{
b = new SolidBrush(Color.MediumBlue);
}
else
{
b = new SolidBrush(Color.SlateBlue);
}
}
}
else
{
if (!selected)
{
b = new SolidBrush(Color.DarkBlue);
}
else
{
b = new SolidBrush(Color.MediumSlateBlue);
}
}
break;
case "disk_unallocated":
b = new SolidBrush(Color.LightGray);
break;
default:
// unknown sector = light grey
b = new SolidBrush(Color.White);
break;
}
return(b);
}
public void drawMapView(Graphics g, PictureBox pb, long scrollPosition, ImageList icons)
{
// draw the relevant set of sector icons on to the picturebox
long totalSectors = i.Length / i.sectorSize;
int sectorsPerRow = pb.Width / sectorSquareSize;
int sectorsPerCol = pb.Height / sectorSquareSize;
int sectorsToDisplay = sectorsPerCol * sectorsPerRow;
long startSector = scrollPosition * sectorsPerRow;
sectorIDs = getSectorIDs(sectorsPerRow, sectorsPerCol, startSector);
Point p = new Point(0,0);
long j = startSector;
Bitmap bmp;
Graphics gOff;
bmp = new Bitmap(pb.Width, pb.Height);
gOff = Graphics.FromImage(bmp);
map = new imageMap(i);
while (j < startSector + sectorsToDisplay)
{
for (int k = 0; k < sectorsPerRow; k++)
{
bool selected = false;
if (this.selectedSector == j + k)
{
selected = true;
SolidBrush outline = new SolidBrush(Color.Red);
gOff.FillRectangle(outline, p.X, p.Y, sectorSquareSize, sectorSquareSize);
}
SolidBrush b = getSectorType(j + k, map, selected);
gOff.FillRectangle(b, new Rectangle(p.X + 1, p.Y + 1, sectorSquareSize-2, sectorSquareSize-2));
p.X += sectorSquareSize;
}
p.Y += sectorSquareSize;
p.X = 0;
j += sectorsPerRow;
}
g.DrawImage(bmp, 0, 0);
gOff.Dispose();
}
private SolidBrush getSectorType(long sector, imageMap im, bool selected)
{
// look up a position in the partition map and return a
// colour-coded brush depending on the sector type
SolidBrush b;
imageMap.mapBlock block = im.sectorIsIn(sector);
string type = block.type.ToString();
if (sector > i.Length / i.sectorSize)
{
type = "";
}
switch (type)
{
case "GPT":
if (!selected) b = new SolidBrush(Color.Green);
else b = new SolidBrush(Color.LawnGreen);
break;
case "MBR":
if (!selected) b = new SolidBrush(Color.DarkRed);
else b = new SolidBrush(Color.Red);
break;
case "vol_unknown":
if (block.allocationMap != null)
{
// work out which bit in allocation map is the right one
// and display allocated/unallocated depending on its value
// there's an off-by-one error somewhere in here
long bitposition = (sector - block.location) / block.mapSectorsPerBlock;
long byteposition = bitposition / 8;
byte bits = block.allocationMap[byteposition];
long positioninbyte = bitposition % 8;
if (dataOperations.is_bit_set(bits, (short)positioninbyte))
{
if (!selected) b = new SolidBrush(Color.CadetBlue);
else b = new SolidBrush(Color.PowderBlue);
}
else
{
if (!selected) b = new SolidBrush(Color.MediumBlue);
else b = new SolidBrush(Color.SlateBlue);
}
}
else
{
if (!selected) b = new SolidBrush(Color.DarkBlue);
else b = new SolidBrush(Color.MediumSlateBlue);
}
break;
case "disk_unallocated":
b = new SolidBrush(Color.LightGray);
break;
default:
// unknown sector = light grey
b = new SolidBrush(Color.White);
break;
}
return b;
}
