/*
FUNCTION: InitNewFont(LOGFONT, COLORREF)
PURPOSE: Prepares a new font for use in the terminal screen
PARAMETERS:
LogFont - New logical font for the screen
rgbColour - New colour for screen painting
*/
void InitNewFont(LOGFONT LogFont, COLORREF rgbColour) {
TEXTMETRIC tm;
HDC hDC;
// If an old font exits, delete it
if (HSCREENFONT(TermInfo)) {
DeleteObject(HSCREENFONT(TermInfo));
}
LFSCREENFONT(TermInfo) = LogFont;
HSCREENFONT(TermInfo) = CreateFontIndirect(&(LFSCREENFONT(TermInfo)));
FGCOLOUR(TermInfo) = rgbColour;
hDC = GetDC(ghWndMain);
SelectObject(hDC, HSCREENFONT(TermInfo));
GetTextMetrics(hDC, &tm);
ReleaseDC(ghWndMain, hDC);
// Character width and height
XCHAR(TermInfo) = tm.tmAveCharWidth;
YCHAR(TermInfo) = tm.tmHeight + tm.tmExternalLeading;
// Set the terminal height and width based on the current font
XSIZE(TermInfo) = tm.tmAveCharWidth * MAXCOLS;
YSIZE(TermInfo) = (tm.tmHeight + tm.tmExternalLeading) * MAXROWS;
}
/*-----------------------------------------------------------------------------*/
void InitFont() {
TEXTMETRIC tm;
HDC hdc;
hdc = GetDC(ghwndMain);
// set the font to be the default fixed-pitch font
SelectObject(hdc, CreateFont(0, 0, 0, 0, 0, 0, 0, 0,
DEFAULT_CHARSET, 0, 0, 0, FIXED_PITCH, NULL));
GetTextMetrics(hdc, &tm);
ReleaseDC(ghwndMain, hdc);
// get text width & height
XCHAR(TTYInfo) = tm.tmAveCharWidth;
YCHAR(TTYInfo) = tm.tmHeight + tm.tmExternalLeading;
}
/*-----------------------------------------------------------------------------
FUNCTION: OutputABufferToWindow(HWND, char *, DWORD)
PURPOSE: Updates TTY Buffer with characters just received.
PARAMETERS:
hTTY - handle to the TTY child window
lpBuf - address of data buffer
dwBufLen - size of data buffer
HISTORY: Date Author Comment
5/ 8/91 BryanW Wrote it
10/27/95 AllenD Modified for MTTTY Sample
-----------------------------------------------------------------------------*/
void OutputABufferToWindow(HWND hTTY, char * lpBuf, DWORD dwBufLen)
{
RECT rect;
/*
update screen buffer with new buffer
need to do a character by character check
for special characters
*/
int i;
for ( i = 0 ; i < (int) dwBufLen; i++) {
switch (lpBuf[ i ]) {
case ASCII_BEL: // BELL CHAR
MessageBeep( 0 ) ;
break ;
case ASCII_BS: // Backspace CHAR
if (COLUMN( TTYInfo ) > 0)
COLUMN( TTYInfo ) -- ;
break ;
case ASCII_CR: // Carriage Return
COLUMN( TTYInfo ) = 0 ;
if (!NEWLINE( TTYInfo ))
break;
//
// FALL THROUGH
//
case ASCII_LF: // Line Feed
if (ROW( TTYInfo )++ == MAXROWS - 1)
{
MoveMemory( (LPSTR) (SCREEN( TTYInfo )),
(LPSTR) (SCREEN( TTYInfo ) + MAXCOLS),
(MAXROWS - 1) * MAXCOLS ) ;
FillMemory((LPSTR) (SCREEN( TTYInfo ) + (MAXROWS - 1) * MAXCOLS),
MAXCOLS, ' ' ) ;
InvalidateRect( hTTY, NULL, FALSE ) ;
ROW( TTYInfo )-- ;
}
break ;
default: // standard character
SCREENCHAR(TTYInfo, COLUMN(TTYInfo), ROW(TTYInfo)) = lpBuf[ i ];
rect.left = (COLUMN( TTYInfo ) * XCHAR( TTYInfo )) -
XOFFSET( TTYInfo ) ;
rect.right = rect.left + XCHAR( TTYInfo ) ;
rect.top = (ROW( TTYInfo ) * YCHAR( TTYInfo )) -
YOFFSET( TTYInfo ) ;
rect.bottom = rect.top + YCHAR( TTYInfo ) ;
InvalidateRect( hTTY, &rect, FALSE ) ;
//
// Line wrap
//
if (COLUMN( TTYInfo ) < MAXCOLS-1 )
COLUMN( TTYInfo )++ ;
else if (AUTOWRAP( TTYInfo ))
OutputABufferToWindow(hTTY, "\r\n", 2 ) ;
break;
}
}
MoveTTYCursor(hTTY);
return;
}
