private void AddPost(HexViewer control, int index, int length, int sourceIndex, bool isPrimary)
{
control.AddRange(new HexViewer.ByteGroup
{
Start = index,
Length = 1,
BackColor = isPrimary ? Color.DarkBlue : Color.Gray,
ForeColor = Color.White,
Type = "Row",
Pointer = sourceIndex
}); // row
control.AddRange(new HexViewer.ByteGroup
{
Start = index + 1,
Length = 1,
BackColor = Color.MediumBlue,
ForeColor = Color.White,
Type = "Length",
Pointer = index
}); // length
if (length != 255)
{
control.AddRange(new HexViewer.ByteGroup
{
Start = index + 2,
Length = 1,
BackColor = Color.Black,
ForeColor = Color.White,
Type = "Unused",
Pointer = index
}); // dead pixel?
control.AddRange(new HexViewer.ByteGroup
{
Start = index + 3,
Length = length,
BackColor = Color.LightSkyBlue,
ForeColor = Color.Black,
Type = "Palette Index",
Pointer = index
}); // pixels
control.AddRange(new HexViewer.ByteGroup
{
Start = index + 4 + length - 1,
Length = 1,
BackColor = Color.Black,
ForeColor = Color.White,
Type = "Unused",
Pointer = index
}); // dead pixel?
}
}
private void AddColumnEndMarker(HexViewer control, int start, int source)
{
control.AddRange(new HexViewer.ByteGroup
{
Start = start,
Length = 1,
BackColor = Color.OrangeRed,
ForeColor = Color.White,
Type = "End Of Column",
Pointer = source
}); // end of column
}
public void AddRanges(HexViewer control, byte[] buffer)
{
control.Clear();
if (buffer.Length > 8)
{
int[] pointer;
short width;
short height;
width = WordHelpers.GetInt16Le(buffer, 0);
height = WordHelpers.GetInt16Le(buffer, 2);
// do some basic sanity checking
if (width > 0 && width <= 320 && height > 0 && height <= 200)
{
control.AddRange(0, 2, Color.MediumSeaGreen, Color.White, "Width"); // width
control.AddRange(2, 2, Color.SeaGreen, Color.White, "Height"); // height
control.AddRange(4, 2, Color.DeepPink, Color.White, "X-Offset"); // x offset
control.AddRange(6, 2, Color.HotPink, Color.White, "Y-Offset"); // y offset
pointer = new int[width];
for (int i = 0; i < width; i++)
{
int index;
index = 8 + (i * 4);
pointer[i] = WordHelpers.GetInt32Le(buffer, index);
control.AddRange(new HexViewer.ByteGroup
{
Start = index,
Length = 4,
ForeColor = Color.White,
BackColor = Color.Orange,
Pointer = pointer[i],
Type = "Pointer #" + i.ToString()
}); // column pointer
}
for (int i = 0; i < width; i++)
{
int index;
byte length;
int sourceIndex;
index = pointer[i];
length = buffer[index + 1];
sourceIndex = 8 + (i * 4);
// post
if (_showPrimaryPosts)
{
this.AddPost(control, index, length, sourceIndex, true);
}
if (length != 255)
{
index = this.IncrementColumn(buffer, index + 3, length);
//index += length + 4; // row, length, 2xunused, pixel data
if (buffer[index] == 255)
{
this.AddColumnEndMarker(control, index, pointer[i]);
}
else
{
while (true)
{
length = buffer[index + 1];
if (length == 255 || index + length + 4 > buffer.Length)
{
break;
}
else if (_showSecondaryPosts)
{
this.AddPost(control, index, length, sourceIndex, false);
}
index = this.IncrementColumn(buffer, index + 3, length);
// index += length + 4;
if (buffer[index] == 255)
{
this.AddColumnEndMarker(control, index, pointer[i]);
break;
}
}
}
}
}
}
}
control.Invalidate();
}