public void StartRender()
{
_codePage = NativeMethods.GetConsoleOutputCP();
_istmInitialized = false;
var consoleHandle = _outputHandle.Value;
CONSOLE_FONT_INFO_EX fontInfo = ConhostConsole.GetConsoleFontInfo(consoleHandle);
int fontType = fontInfo.FontFamily & NativeMethods.FontTypeMask;
_trueTypeInUse = (fontType & NativeMethods.TrueTypeFont) == NativeMethods.TrueTypeFont;
}
internal static CONSOLE_FONT_INFO_EX GetConsoleFontInfo(SafeFileHandle consoleHandle)
{
CONSOLE_FONT_INFO_EX fontInfo = new CONSOLE_FONT_INFO_EX();
fontInfo.cbSize = Marshal.SizeOf(fontInfo);
bool result = NativeMethods.GetCurrentConsoleFontEx(consoleHandle.DangerousGetHandle(), false, ref fontInfo);
if (result == false)
{
int err = Marshal.GetLastWin32Error();
Win32Exception innerException = new Win32Exception(err);
throw new Exception("Failed to get console font information.", innerException);
}
return(fontInfo);
}
internal static extern bool GetCurrentConsoleFontEx(IntPtr consoleOutput, bool bMaximumWindow, ref CONSOLE_FONT_INFO_EX consoleFontInfo);
internal static extern bool SetCurrentConsoleFontEx(NakedWin32Handle consoleOutput, bool bMaximumWindow, ref CONSOLE_FONT_INFO_EX consoleFontInfo);
internal static CONSOLE_FONT_INFO_EX GetConsoleFontInfo(ConsoleHandle consoleHandle)
{
Dbg.Assert(!consoleHandle.IsInvalid, "ConsoleHandle is not valid");
Dbg.Assert(!consoleHandle.IsClosed, "ConsoleHandle is closed");
CONSOLE_FONT_INFO_EX fontInfo = new CONSOLE_FONT_INFO_EX();
fontInfo.cbSize = Marshal.SizeOf(fontInfo);
bool result = NativeMethods.GetCurrentConsoleFontEx(consoleHandle.DangerousGetHandle(), false, ref fontInfo);
if (result == false)
{
int err = Marshal.GetLastWin32Error();
HostException e = CreateHostException(err, "GetConsoleFontInfo",
ErrorCategory.ResourceUnavailable, ConsoleControlStrings.GetConsoleFontInfoExceptionTemplate);
throw e;
}
return fontInfo;
}
private void ReallyRender()
{
var text = ParseInput();
_codePage = NativeMethods.GetConsoleOutputCP();
_istmInitialized = false;
ConsoleHandle consoleHandle = _outputHandle.Value;
CONSOLE_FONT_INFO_EX fontInfo = GetConsoleFontInfo(consoleHandle);
int fontType = fontInfo.FontFamily & NativeMethods.FontTypeMask;
_trueTypeInUse = (fontType & NativeMethods.TrueTypeFont) == NativeMethods.TrueTypeFont;
int statusLineCount = GetStatusLineCount();
int j = _initialX + (_bufferWidth * Options.ExtraPromptLineCount);
var backgroundColor = _initialBackgroundColor;
var foregroundColor = _initialForegroundColor;
bool afterLastToken = false;
int totalBytes = j;
int bufferWidth = Console.BufferWidth;
var tokenStack = new Stack <SavedTokenState>();
tokenStack.Push(new SavedTokenState
{
Tokens = _tokens,
Index = 0,
BackgroundColor = _initialBackgroundColor,
ForegroundColor = _initialForegroundColor
});
int bufferLineCount;
try
{
bufferLineCount = ConvertOffsetToCoordinates(text.Length).Y - _initialY + 1 + statusLineCount;
if (_consoleBuffer.Length != bufferLineCount * bufferWidth)
{
var newBuffer = new CHAR_INFO[bufferLineCount * bufferWidth];
Array.Copy(_consoleBuffer, newBuffer, _initialX + (Options.ExtraPromptLineCount * _bufferWidth));
if (_consoleBuffer.Length > bufferLineCount * bufferWidth)
{
int consoleBufferOffset = ConvertOffsetToConsoleBufferOffset(text.Length, _initialX + (Options.ExtraPromptLineCount * _bufferWidth));
// Need to erase the extra lines that we won't draw again
for (int i = consoleBufferOffset; i < _consoleBuffer.Length; i++)
{
_consoleBuffer[i] = _space;
}
WriteBufferLines(_consoleBuffer, ref _initialY);
}
_consoleBuffer = newBuffer;
}
for (int i = 0; i < text.Length; i++)
{
SavedTokenState state = null;
totalBytes = totalBytes % bufferWidth;
if (!afterLastToken)
{
// Figure out the color of the character - if it's in a token,
// use the tokens color otherwise use the initial color.
state = tokenStack.Peek();
var token = state.Tokens[state.Index];
if (i == token.Extent.EndOffset)
{
if (token == state.Tokens[state.Tokens.Length - 1])
{
tokenStack.Pop();
if (tokenStack.Count == 0)
{
afterLastToken = true;
token = null;
foregroundColor = _initialForegroundColor;
backgroundColor = _initialBackgroundColor;
}
else
{
state = tokenStack.Peek();
}
}
if (!afterLastToken)
{
foregroundColor = state.ForegroundColor;
backgroundColor = state.BackgroundColor;
token = state.Tokens[++state.Index];
}
}
if (!afterLastToken && i == token.Extent.StartOffset)
{
GetTokenColors(token, out foregroundColor, out backgroundColor);
var stringToken = token as StringExpandableToken;
if (stringToken != null)
{
// We might have nested tokens.
if (stringToken.NestedTokens != null && stringToken.NestedTokens.Any())
{
var tokens = new Token[stringToken.NestedTokens.Count + 1];
stringToken.NestedTokens.CopyTo(tokens, 0);
// NestedTokens doesn't have an "EOS" token, so we use
// the string literal token for that purpose.
tokens[tokens.Length - 1] = stringToken;
tokenStack.Push(new SavedTokenState
{
Tokens = tokens,
Index = 0,
BackgroundColor = backgroundColor,
ForegroundColor = foregroundColor
});
}
}
}
}
if (text[i] == '\n')
{
while ((j % bufferWidth) != 0)
{
_consoleBuffer[j++] = _space;
}
for (int k = 0; k < Options.ContinuationPrompt.Length; k++, j++)
{
_consoleBuffer[j].UnicodeChar = Options.ContinuationPrompt[k];
_consoleBuffer[j].ForegroundColor = Options.ContinuationPromptForegroundColor;
_consoleBuffer[j].BackgroundColor = Options.ContinuationPromptBackgroundColor;
}
}
else
{
int size = LengthInBufferCells(text[i]);
totalBytes += size;
//if there is no enough space for the character at the edge, fill in spaces at the end and
//put the character to next line.
int filling = totalBytes > bufferWidth ? (totalBytes - bufferWidth) % size : 0;
for (int f = 0; f < filling; f++)
{
_consoleBuffer[j++] = _space;
totalBytes++;
}
if (char.IsControl(text[i]))
{
_consoleBuffer[j].UnicodeChar = '^';
MaybeEmphasize(ref _consoleBuffer[j++], i, foregroundColor, backgroundColor);
_consoleBuffer[j].UnicodeChar = (char)('@' + text[i]);
MaybeEmphasize(ref _consoleBuffer[j++], i, foregroundColor, backgroundColor);
}
else if (size > 1 && IsCJKOutputCodePage() && _trueTypeInUse)
{
_consoleBuffer[j].UnicodeChar = text[i];
_consoleBuffer[j].Attributes = (ushort)((uint)_consoleBuffer[j].Attributes |
(uint)CHAR_INFO_Attributes.COMMON_LVB_LEADING_BYTE);
MaybeEmphasize(ref _consoleBuffer[j++], i, foregroundColor, backgroundColor);
_consoleBuffer[j].UnicodeChar = text[i];
_consoleBuffer[j].Attributes = (ushort)((uint)_consoleBuffer[j].Attributes |
(uint)CHAR_INFO_Attributes.COMMON_LVB_TRAILING_BYTE);
MaybeEmphasize(ref _consoleBuffer[j++], i, foregroundColor, backgroundColor);
}
else
{
_consoleBuffer[j].UnicodeChar = text[i];
MaybeEmphasize(ref _consoleBuffer[j++], i, foregroundColor, backgroundColor);
}
}
}
}
finally
{
if (_hwnd != (IntPtr)0 && _hDC != (IntPtr)0)
{
NativeMethods.ReleaseDC(_hwnd, _hDC);
}
}
for (; j < (_consoleBuffer.Length - (statusLineCount * _bufferWidth)); j++)
{
_consoleBuffer[j] = _space;
}
if (_statusLinePrompt != null)
{
foregroundColor = _statusIsErrorMessage ? Options.ErrorForegroundColor : Console.ForegroundColor;
backgroundColor = _statusIsErrorMessage ? Options.ErrorBackgroundColor : Console.BackgroundColor;
for (int i = 0; i < _statusLinePrompt.Length; i++, j++)
{
_consoleBuffer[j].UnicodeChar = _statusLinePrompt[i];
_consoleBuffer[j].ForegroundColor = foregroundColor;
_consoleBuffer[j].BackgroundColor = backgroundColor;
}
for (int i = 0; i < _statusBuffer.Length; i++, j++)
{
_consoleBuffer[j].UnicodeChar = _statusBuffer[i];
_consoleBuffer[j].ForegroundColor = foregroundColor;
_consoleBuffer[j].BackgroundColor = backgroundColor;
}
for (; j < _consoleBuffer.Length; j++)
{
_consoleBuffer[j] = _space;
}
}
bool rendered = false;
if (_parseErrors.Length > 0)
{
int promptChar = _initialX - 1 + (_bufferWidth * Options.ExtraPromptLineCount);
while (promptChar >= 0)
{
var c = (char)_consoleBuffer[promptChar].UnicodeChar;
if (char.IsWhiteSpace(c))
{
promptChar -= 1;
continue;
}
ConsoleColor prevColor = _consoleBuffer[promptChar].ForegroundColor;
_consoleBuffer[promptChar].ForegroundColor = ConsoleColor.Red;
WriteBufferLines(_consoleBuffer, ref _initialY);
rendered = true;
_consoleBuffer[promptChar].ForegroundColor = prevColor;
break;
}
}
if (!rendered)
{
WriteBufferLines(_consoleBuffer, ref _initialY);
}
PlaceCursor();
if ((_initialY + bufferLineCount) > (Console.WindowTop + Console.WindowHeight))
{
Console.WindowTop = _initialY + bufferLineCount - Console.WindowHeight;
}
_lastRenderTime.Restart();
}
internal static extern bool GetCurrentConsoleFontEx(IntPtr consoleOutput, bool bMaximumWindow, ref CONSOLE_FONT_INFO_EX consoleFontInfo);
