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tetex-bin  3.0
Defines | Functions
lib_vidattr.c File Reference
#include <curses.priv.h>
#include <term.h>

Go to the source code of this file.

Defines

#define doPut(mode)   TPUTS_TRACE(#mode); tputs(mode, 1, outc)
#define TurnOn(mask, mode)   if ((turn_on & mask) && mode) { doPut(mode); }
#define TurnOff(mask, mode)   if ((turn_off & mask) && mode) { doPut(mode); turn_off &= ~mask; }
#define SetColorsIf(why, old_attr)
#define fix_pair0   FALSE

Functions

 vidputs (chtype newmode, int(*outc)(int))
 vidattr (chtype newmode)
 termattrs (void)

Define Documentation

#define doPut (   mode)    TPUTS_TRACE(#mode); tputs(mode, 1, outc)

Definition at line 69 of file lib_vidattr.c.

#define fix_pair0   FALSE
#define SetColorsIf (   why,
  old_attr 
)
Value:
if (can_color && (why)) { \
              int old_pair = PAIR_NUMBER(old_attr); \
              TR(TRACE_ATTRS, ("old pair = %d -- new pair = %d", old_pair, pair)); \
              if ((pair != old_pair) \
               || (fix_pair0 && (pair == 0)) \
               || (reverse ^ ((old_attr & A_REVERSE) != 0))) { \
                     _nc_do_color(old_pair, pair, reverse, outc); \
              } \
       }

Definition at line 78 of file lib_vidattr.c.

#define TurnOff (   mask,
  mode 
)    if ((turn_off & mask) && mode) { doPut(mode); turn_off &= ~mask; }

Definition at line 74 of file lib_vidattr.c.

#define TurnOn (   mask,
  mode 
)    if ((turn_on & mask) && mode) { doPut(mode); }

Definition at line 71 of file lib_vidattr.c.


Function Documentation

termattrs ( void  )

Definition at line 274 of file lib_vidattr.c.

{
    chtype attrs = A_NORMAL;

    T((T_CALLED("termattrs()")));
    if (enter_alt_charset_mode)
       attrs |= A_ALTCHARSET;

    if (enter_blink_mode)
       attrs |= A_BLINK;

    if (enter_bold_mode)
       attrs |= A_BOLD;

    if (enter_dim_mode)
       attrs |= A_DIM;

    if (enter_reverse_mode)
       attrs |= A_REVERSE;

    if (enter_standout_mode)
       attrs |= A_STANDOUT;

    if (enter_protected_mode)
       attrs |= A_PROTECT;

    if (enter_secure_mode)
       attrs |= A_INVIS;

    if (enter_underline_mode)
       attrs |= A_UNDERLINE;

    if (SP->_coloron)
       attrs |= A_COLOR;

    returnChar(attrs);
}

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vidattr ( chtype  newmode)

Definition at line 266 of file lib_vidattr.c.

{
    T((T_CALLED("vidattr(%s)"), _traceattr(newmode)));

    returnCode(vidputs(newmode, _nc_outch));
}

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vidputs ( chtype  newmode,
int(*)(int outc 
)

Definition at line 91 of file lib_vidattr.c.

{
    static attr_t previous_attr = A_NORMAL;
    attr_t turn_on, turn_off;
    int pair;
    bool reverse = FALSE;
    bool can_color = (SP == 0 || SP->_coloron);
#if NCURSES_EXT_FUNCS
    bool fix_pair0 = (SP != 0 && SP->_coloron && !SP->_default_color);
#else
#define fix_pair0 FALSE
#endif

    T((T_CALLED("vidputs(%s)"), _traceattr(newmode)));

    /* this allows us to go on whether or not newterm() has been called */
    if (SP)
       previous_attr = SP->_current_attr;

    TR(TRACE_ATTRS, ("previous attribute was %s", _traceattr(previous_attr)));

#if !USE_XMC_SUPPORT
    if ((SP != 0)
       && (magic_cookie_glitch > 0))
       newmode &= ~(SP->_xmc_suppress);
#endif

    /*
     * If we have a terminal that cannot combine color with video
     * attributes, use the colors in preference.
     */
    if (((newmode & A_COLOR) != 0
        || fix_pair0)
       && (no_color_video > 0)) {
       /*
        * If we had chosen the A_xxx definitions to correspond to the
        * no_color_video mask, we could simply shift it up and mask off the
        * attributes.  But we did not (actually copied Solaris' definitions).
        * However, this is still simpler/faster than a lookup table.
        *
        * The 63 corresponds to A_STANDOUT, A_UNDERLINE, A_REVERSE, A_BLINK,
        * A_DIM, A_BOLD which are 1:1 with no_color_video.  The bits that
        * correspond to A_INVIS, A_PROTECT (192) must be shifted up 1 and
        * A_ALTCHARSET (256) down 2 to line up.  We use the NCURSES_BITS
        * macro so this will work properly for the wide-character layout.
        */
       unsigned value = no_color_video;
       attr_t mask = NCURSES_BITS((value & 63)
                               | ((value & 192) << 1)
                               | ((value & 256) >> 2), 8);

       if ((mask & A_REVERSE) != 0
           && (newmode & A_REVERSE) != 0) {
           reverse = TRUE;
           mask &= ~A_REVERSE;
       }
       newmode &= ~mask;
    }

    if (newmode == previous_attr)
       returnCode(OK);

    pair = PAIR_NUMBER(newmode);

    if (reverse) {
       newmode &= ~A_REVERSE;
    }

    turn_off = (~newmode & previous_attr) & ALL_BUT_COLOR;
    turn_on = (newmode & ~previous_attr) & ALL_BUT_COLOR;

    SetColorsIf(((pair == 0) && !fix_pair0), previous_attr);

    if (newmode == A_NORMAL) {
       if ((previous_attr & A_ALTCHARSET) && exit_alt_charset_mode) {
           doPut(exit_alt_charset_mode);
           previous_attr &= ~A_ALTCHARSET;
       }
       if (previous_attr) {
           if (exit_attribute_mode) {
              doPut(exit_attribute_mode);
           } else {
              if (!SP || SP->_use_rmul) {
                  TurnOff(A_UNDERLINE, exit_underline_mode);
              }
              if (!SP || SP->_use_rmso) {
                  TurnOff(A_STANDOUT, exit_standout_mode);
              }
           }
           previous_attr &= ~A_COLOR;
       }

       SetColorsIf((pair != 0) || fix_pair0, previous_attr);
    } else if (set_attributes) {
       if (turn_on || turn_off) {
           TPUTS_TRACE("set_attributes");
           tputs(tparm(set_attributes,
                     (newmode & A_STANDOUT) != 0,
                     (newmode & A_UNDERLINE) != 0,
                     (newmode & A_REVERSE) != 0,
                     (newmode & A_BLINK) != 0,
                     (newmode & A_DIM) != 0,
                     (newmode & A_BOLD) != 0,
                     (newmode & A_INVIS) != 0,
                     (newmode & A_PROTECT) != 0,
                     (newmode & A_ALTCHARSET) != 0), 1, outc);
           previous_attr &= ~A_COLOR;
       }
       SetColorsIf((pair != 0) || fix_pair0, previous_attr);
    } else {

       TR(TRACE_ATTRS, ("turning %s off", _traceattr(turn_off)));

       TurnOff(A_ALTCHARSET, exit_alt_charset_mode);

       if (!SP || SP->_use_rmul) {
           TurnOff(A_UNDERLINE, exit_underline_mode);
       }

       if (!SP || SP->_use_rmso) {
           TurnOff(A_STANDOUT, exit_standout_mode);
       }

       if (turn_off && exit_attribute_mode) {
           doPut(exit_attribute_mode);
           turn_on |= (newmode & (chtype) (~A_COLOR));
           previous_attr &= ~A_COLOR;
       }
       SetColorsIf((pair != 0) || fix_pair0, previous_attr);

       TR(TRACE_ATTRS, ("turning %s on", _traceattr(turn_on)));
       /* *INDENT-OFF* */
       TurnOn(A_ALTCHARSET, enter_alt_charset_mode);
       TurnOn(A_BLINK,             enter_blink_mode);
       TurnOn(A_BOLD,              enter_bold_mode);
       TurnOn(A_DIM,        enter_dim_mode);
       TurnOn(A_REVERSE,    enter_reverse_mode);
       TurnOn(A_STANDOUT,   enter_standout_mode);
       TurnOn(A_PROTECT,    enter_protected_mode);
       TurnOn(A_INVIS,             enter_secure_mode);
       TurnOn(A_UNDERLINE,  enter_underline_mode);
#ifdef enter_horizontal_hl_mode
       TurnOn(A_HORIZONTAL, enter_horizontal_hl_mode);
#endif
#ifdef enter_left_hl_mode
       TurnOn(A_LEFT,              enter_left_hl_mode);
#endif
#ifdef enter_low_hl_mode
       TurnOn(A_LOW,        enter_low_hl_mode);
#endif
#ifdef enter_right_hl_mode
       TurnOn(A_RIGHT,             enter_right_hl_mode);
#endif
#ifdef enter_top_hl_mode
       TurnOn(A_TOP,        enter_top_hl_mode);
#endif
#ifdef enter_vertical_hl_mode
       TurnOn(A_VERTICAL,   enter_vertical_hl_mode);
#endif
       /* *INDENT-ON* */

    }

    if (reverse)
       newmode |= A_REVERSE;

    if (SP)
       SP->_current_attr = newmode;
    else
       previous_attr = newmode;

    returnCode(OK);
}

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