public BufferChar[] ReadBufferLines(int top, int count)
{
var result = new CHAR_INFO[BufferWidth * count];
var handle = NativeMethods.GetStdHandle((uint)StandardHandleId.Output);
var readBufferSize = new COORD {
X = (short)BufferWidth,
Y = (short)count
};
var readBufferCoord = new COORD {
X = 0, Y = 0
};
var readRegion = new SMALL_RECT
{
Top = (short)top,
Left = 0,
Bottom = (short)(top + count),
Right = (short)(BufferWidth - 1)
};
NativeMethods.ReadConsoleOutput(handle, result,
readBufferSize, readBufferCoord, ref readRegion);
return(ToBufferCharBuffer(result));
}
public CHAR_INFO ToCharInfo()
{
int fg = (int)ForegroundColor;
int bg = (int)BackgroundColor;
if (fg < 0 || fg > 0xf || bg < 0 || bg > 0xf)
{
throw new InvalidOperationException();
}
if (Inverse)
{
// TODO: check $host.UI.SupportsVirtualTerminal and maybe set Inverse instead (it does look weird)
fg = fg ^ 7;
bg = bg ^ 7;
}
ushort attrs = (ushort)(fg | (bg << 4));
if (IsLeadByte)
{
attrs |= (ushort)CHAR_INFO_Attributes.COMMON_LVB_LEADING_BYTE;
}
if (IsTrailByte)
{
attrs |= (ushort)CHAR_INFO_Attributes.COMMON_LVB_TRAILING_BYTE;
}
CHAR_INFO result = new CHAR_INFO
{
UnicodeChar = UnicodeChar,
Attributes = attrs,
};
return(result);
}
public static BufferChar FromCharInfo(CHAR_INFO charInfo)
{
BufferChar result = new BufferChar
{
UnicodeChar = (char)charInfo.UnicodeChar,
ForegroundColor = (ConsoleColor)(charInfo.Attributes & 0xf),
BackgroundColor = (ConsoleColor)((charInfo.Attributes & 0x00f0) >> 4),
};
return(result);
}
public void ScrollBuffer(int lines)
{
var handle = NativeMethods.GetStdHandle((uint)StandardHandleId.Output);
var scrollRectangle = new SMALL_RECT
{
Top = (short)lines,
Left = 0,
Bottom = (short)(Console.BufferHeight - 1),
Right = (short)Console.BufferWidth
};
var destinationOrigin = new COORD {
X = 0, Y = 0
};
var fillChar = new CHAR_INFO(' ', Console.ForegroundColor, Console.BackgroundColor);
NativeMethods.ScrollConsoleScreenBuffer(handle, ref scrollRectangle, IntPtr.Zero, destinationOrigin, ref fillChar);
}
public static extern bool ScrollConsoleScreenBuffer(IntPtr hConsoleOutput,
ref SMALL_RECT lpScrollRectangle,
IntPtr lpClipRectangle,
COORD dwDestinationOrigin,
ref CHAR_INFO lpFill);
public static extern bool WriteConsoleOutput(IntPtr consoleOutput, CHAR_INFO[] buffer, COORD bufferSize, COORD bufferCoord, ref SMALL_RECT writeRegion);
public CHAR_INFO[] ReadBufferLines(int top, int count)
{
var result = new CHAR_INFO[BufferWidth * count];
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
var readBufferSize = new COORD {
X = (short)BufferWidth,
Y = (short)count};
var readBufferCoord = new COORD {X = 0, Y = 0};
var readRegion = new SMALL_RECT
{
Top = (short)top,
Left = 0,
Bottom = (short)(top + count),
Right = (short)(BufferWidth - 1)
};
NativeMethods.ReadConsoleOutput(handle, result,
readBufferSize, readBufferCoord, ref readRegion);
return result;
}
public void WriteBufferLines(CHAR_INFO[] buffer, ref int top, bool ensureBottomLineVisible)
{
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
int bufferWidth = Console.BufferWidth;
int bufferLineCount = buffer.Length / bufferWidth;
if ((top + bufferLineCount) > Console.BufferHeight)
{
var scrollCount = (top + bufferLineCount) - Console.BufferHeight;
ScrollBuffer(scrollCount);
top -= scrollCount;
}
var bufferSize = new COORD
{
X = (short) bufferWidth,
Y = (short) bufferLineCount
};
var bufferCoord = new COORD {X = 0, Y = 0};
var bottom = top + bufferLineCount - 1;
var writeRegion = new SMALL_RECT
{
Top = (short) top,
Left = 0,
Bottom = (short) bottom,
Right = (short) (bufferWidth - 1)
};
NativeMethods.WriteConsoleOutput(handle, buffer,
bufferSize, bufferCoord, ref writeRegion);
// Now make sure the bottom line is visible
if (ensureBottomLineVisible &&
(bottom >= (Console.WindowTop + Console.WindowHeight)))
{
Console.CursorTop = bottom;
}
}
public void ScrollBuffer(int lines)
{
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
var scrollRectangle = new SMALL_RECT
{
Top = (short) lines,
Left = 0,
Bottom = (short)(Console.BufferHeight - 1),
Right = (short)Console.BufferWidth
};
var destinationOrigin = new COORD {X = 0, Y = 0};
var fillChar = new CHAR_INFO(' ', Console.ForegroundColor, Console.BackgroundColor);
NativeMethods.ScrollConsoleScreenBuffer(handle, ref scrollRectangle, IntPtr.Zero, destinationOrigin, ref fillChar);
}
public void WriteBufferLines(CHAR_INFO[] buffer, ref int top)
{
WriteBufferLines(buffer, ref top, true);
}
public static extern bool ScrollConsoleScreenBuffer(IntPtr hConsoleOutput,
ref SMALL_RECT lpScrollRectangle,
IntPtr lpClipRectangle,
COORD dwDestinationOrigin,
ref CHAR_INFO lpFill);
private BufferChar[] ToBufferCharBuffer(CHAR_INFO[] buffer)
{
var result = new BufferChar[buffer.Length];
for (int i = 0; i < buffer.Length; i++)
{
result[i] = BufferChar.FromCharInfo(buffer[i]);
}
return result;
}
public static BufferChar FromCharInfo(CHAR_INFO charInfo)
{
BufferChar result = new BufferChar
{
UnicodeChar = (char) charInfo.UnicodeChar,
ForegroundColor = (ConsoleColor)(charInfo.Attributes & 0xf),
BackgroundColor = (ConsoleColor)((charInfo.Attributes & 0x00f0) >> 4),
};
return result;
}
public CHAR_INFO ToCharInfo()
{
int fg = (int) ForegroundColor;
int bg = (int) BackgroundColor;
if (fg < 0 || fg > 0xf || bg < 0 || bg > 0xf)
throw new InvalidOperationException();
if (Inverse)
{
// TODO: check $host.UI.SupportsVirtualTerminal and maybe set Inverse instead (it does look weird)
fg = fg ^ 7;
bg = bg ^ 7;
}
ushort attrs = (ushort)(fg | (bg << 4));
if (IsLeadByte)
attrs |= (ushort)CHAR_INFO_Attributes.COMMON_LVB_LEADING_BYTE;
if (IsTrailByte)
attrs |= (ushort)CHAR_INFO_Attributes.COMMON_LVB_TRAILING_BYTE;
CHAR_INFO result = new CHAR_INFO
{
UnicodeChar = UnicodeChar,
Attributes = attrs,
};
return result;
}