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Added more terminal functions

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Added save position, restore position and set scroll to the terminal
functions. See https://ttssh2.osdn.jp/manual/en/about/ctrlseq.html for a
description of the new sequences.
This commit is contained in:
James Snyder 2018-05-30 18:52:15 +03:00 committed by Bogdan Marinescu
parent a0b0dae877
commit 75e8dcdf59
2 changed files with 29 additions and 9 deletions
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3
inc/term.h
View File

@ -43,6 +43,9 @@ void term_putch( u8 ch );
void term_putstr( const char* str, unsigned size ); void term_putstr( const char* str, unsigned size );
unsigned term_get_cx(void); unsigned term_get_cx(void);
unsigned term_get_cy(void); unsigned term_get_cy(void);
void term_savepos();
void term_restorepos();
void term_setscroll( unsigned start, unsigned end );
#define TERM_KEYCODES\ #define TERM_KEYCODES\
_D( KC_UP ),\ _D( KC_UP ),\

35
src/term.c
View File

@ -33,9 +33,8 @@ static void term_ansi( const char* fmt, ... )
seq[ TERM_MAX_ANSI_SIZE ] = '\0'; seq[ TERM_MAX_ANSI_SIZE ] = '\0';
seq[ 0 ] = '\x1B'; seq[ 0 ] = '\x1B';
seq[ 1 ] = '[';
va_start( ap, fmt ); va_start( ap, fmt );
vsnprintf( seq + 2, TERM_MAX_ANSI_SIZE - 2, fmt, ap ); vsnprintf( seq + 1, TERM_MAX_ANSI_SIZE - 1, fmt, ap );
va_end( ap ); va_end( ap );
term_putstr( seq, strlen( seq ) ); term_putstr( seq, strlen( seq ) );
} }
@ -43,20 +42,38 @@ static void term_ansi( const char* fmt, ... )
// Clear the screen // Clear the screen
void term_clrscr() void term_clrscr()
{ {
term_ansi( "2J" ); term_ansi( "[2J" );
term_cx = term_cy = 0; term_cx = term_cy = 0;
} }
void term_savepos()
{
term_ansi( "7" );
}
void term_restorepos()
{
term_ansi( "8" );
}
void term_setscroll( unsigned start, unsigned end )
{
if( ( start > 0 ) && ( end > 0 ) )
term_ansi( "[%u;%ur", start, end );
else
term_ansi( "[r" );
}
// Clear to end of line // Clear to end of line
void term_clreol() void term_clreol()
{ {
term_ansi( "K" ); term_ansi( "[K" );
} }
// Move cursor to (x, y) // Move cursor to (x, y)
void term_gotoxy( unsigned x, unsigned y ) void term_gotoxy( unsigned x, unsigned y )
{ {
term_ansi( "%u;%uH", y, x ); term_ansi( "[%u;%uH", y, x );
term_cx = x; term_cx = x;
term_cy = y; term_cy = y;
} }
@ -64,28 +81,28 @@ void term_gotoxy( unsigned x, unsigned y )
// Move cursor up "delta" lines // Move cursor up "delta" lines
void term_up( unsigned delta ) void term_up( unsigned delta )
{ {
term_ansi( "%uA", delta ); term_ansi( "[%uA", delta );
term_cy -= delta; term_cy -= delta;
} }
// Move cursor down "delta" lines // Move cursor down "delta" lines
void term_down( unsigned delta ) void term_down( unsigned delta )
{ {
term_ansi( "%uB", delta ); term_ansi( "[%uB", delta );
term_cy += delta; term_cy += delta;
} }
// Move cursor right "delta" chars // Move cursor right "delta" chars
void term_right( unsigned delta ) void term_right( unsigned delta )
{ {
term_ansi( "%uC", delta ); term_ansi( "[%uC", delta );
term_cx -= delta; term_cx -= delta;
} }
// Move cursor left "delta" chars // Move cursor left "delta" chars
void term_left( unsigned delta ) void term_left( unsigned delta )
{ {
term_ansi( "%uD", delta ); term_ansi( "[%uD", delta );
term_cx += delta; term_cx += delta;
} }