release/src/router/libncurses/ncurses/widechar/lib_vid_attr.c

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   2  * Copyright (c) 2002-2013,2014 Free Software Foundation, Inc.              *
   3  *                                                                          *
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   5  * copy of this software and associated documentation files (the            *
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  28
  29 /****************************************************************************
  30  *  Author: Thomas E. Dickey                                                *
  31  ****************************************************************************/
  32
  33 #include <curses.priv.h>
  34
  35 #ifndef CUR
  36 #define CUR SP_TERMTYPE
  37 #endif
  38
  39 MODULE_ID("$Id: lib_vid_attr.c,v 1.23 2014/06/07 22:13:46 tom Exp $")
  40
  41 #define doPut(mode) \
  42         TPUTS_TRACE(#mode); \
  43         NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx mode, 1, outc)
  44
  45 #define TurnOn(mask, mode) \
  46         if ((turn_on & mask) && mode) { doPut(mode); }
  47
  48 #define TurnOff(mask, mode) \
  49         if ((turn_off & mask) && mode) { doPut(mode); turn_off &= ~mask; }
  50
  51         /* if there is no current screen, assume we *can* do color */
  52 #define SetColorsIf(why, old_attr, old_pair) \
  53         if (can_color && (why)) { \
  54                 TR(TRACE_ATTRS, ("old pair = %d -- new pair = %d", old_pair, pair)); \
  55                 if ((pair != old_pair) \
  56                  || (fix_pair0 && (pair == 0)) \
  57                  || (reverse ^ ((old_attr & A_REVERSE) != 0))) { \
  58                     NCURSES_SP_NAME(_nc_do_color) (NCURSES_SP_ARGx \
  59                                                    old_pair, pair, \
  60                                                    reverse, outc); \
  61                 } \
  62         }
  63
  64 #define set_color(mode, pair) \
  65         mode &= ALL_BUT_COLOR; \
  66         mode |= (attr_t) ColorPair(pair)
  67
  68 NCURSES_EXPORT(int)
  69 NCURSES_SP_NAME(vid_puts) (NCURSES_SP_DCLx
  70                            attr_t newmode,
  71                            NCURSES_PAIRS_T pair,
  72                            void *opts GCC_UNUSED,
  73                            NCURSES_SP_OUTC outc)
  74 {
  75 #if NCURSES_EXT_COLORS
  76     static attr_t previous_attr = A_NORMAL;
  77     static int previous_pair = 0;
  78
  79     attr_t turn_on, turn_off;
  80     bool reverse = FALSE;
  81     bool can_color = (SP_PARM == 0 || SP_PARM->_coloron);
  82 #if NCURSES_EXT_FUNCS
  83     bool fix_pair0 = (SP_PARM != 0 && SP_PARM->_coloron && !SP_PARM->_default_color);
  84 #else
  85 #define fix_pair0 FALSE
  86 #endif
  87
  88     newmode &= A_ATTRIBUTES;
  89     T((T_CALLED("vid_puts(%s,%d)"), _traceattr(newmode), pair));
  90
  91     /* this allows us to go on whether or not newterm() has been called */
  92     if (SP_PARM) {
  93         previous_attr = AttrOf(SCREEN_ATTRS(SP_PARM));
  94         previous_pair = GetPair(SCREEN_ATTRS(SP_PARM));
  95     }
  96
  97     TR(TRACE_ATTRS, ("previous attribute was %s, %d",
  98                      _traceattr(previous_attr), previous_pair));
  99
 100 #if !USE_XMC_SUPPORT
 101     if ((SP_PARM != 0)
 102         && (magic_cookie_glitch > 0))
 103         newmode &= ~(SP_PARM->_xmc_suppress);
 104 #endif
 105
 106     /*
 107      * If we have a terminal that cannot combine color with video
 108      * attributes, use the colors in preference.
 109      */
 110     if ((pair != 0
 111          || fix_pair0)
 112         && (no_color_video > 0)) {
 113         /*
 114          * If we had chosen the A_xxx definitions to correspond to the
 115          * no_color_video mask, we could simply shift it up and mask off the
 116          * attributes.  But we did not (actually copied Solaris' definitions).
 117          * However, this is still simpler/faster than a lookup table.
 118          *
 119          * The 63 corresponds to A_STANDOUT, A_UNDERLINE, A_REVERSE, A_BLINK,
 120          * A_DIM, A_BOLD which are 1:1 with no_color_video.  The bits that
 121          * correspond to A_INVIS, A_PROTECT (192) must be shifted up 1 and
 122          * A_ALTCHARSET (256) down 2 to line up.  We use the NCURSES_BITS
 123          * macro so this will work properly for the wide-character layout.
 124          */
 125         unsigned value = (unsigned) no_color_video;
 126         attr_t mask = NCURSES_BITS((value & 63)
 127                                    | ((value & 192) << 1)
 128                                    | ((value & 256) >> 2), 8);
 129
 130         if ((mask & A_REVERSE) != 0
 131             && (newmode & A_REVERSE) != 0) {
 132             reverse = TRUE;
 133             mask &= ~A_REVERSE;
 134         }
 135         newmode &= ~mask;
 136     }
 137
 138     if (newmode == previous_attr
 139         && pair == previous_pair)
 140         returnCode(OK);
 141
 142     if (reverse) {
 143         newmode &= ~A_REVERSE;
 144     }
 145
 146     turn_off = (~newmode & previous_attr) & ALL_BUT_COLOR;
 147     turn_on = (newmode & ~(previous_attr & TPARM_ATTR)) & ALL_BUT_COLOR;
 148
 149     SetColorsIf(((pair == 0) && !fix_pair0), previous_attr, previous_pair);
 150
 151     if (newmode == A_NORMAL) {
 152         if ((previous_attr & A_ALTCHARSET) && exit_alt_charset_mode) {
 153             doPut(exit_alt_charset_mode);
 154             previous_attr &= ~A_ALTCHARSET;
 155         }
 156         if (previous_attr) {
 157             if (exit_attribute_mode) {
 158                 doPut(exit_attribute_mode);
 159             } else {
 160                 if (!SP_PARM || SP_PARM->_use_rmul) {
 161                     TurnOff(A_UNDERLINE, exit_underline_mode);
 162                 }
 163                 if (!SP_PARM || SP_PARM->_use_rmso) {
 164                     TurnOff(A_STANDOUT, exit_standout_mode);
 165                 }
 166 #if USE_ITALIC
 167                 if (!SP_PARM || SP_PARM->_use_ritm) {
 168                     TurnOff(A_ITALIC, exit_italics_mode);
 169                 }
 170 #endif
 171             }
 172             previous_attr &= ALL_BUT_COLOR;
 173             previous_pair = 0;
 174         }
 175
 176         SetColorsIf((pair != 0) || fix_pair0, previous_attr, previous_pair);
 177     } else if (set_attributes) {
 178         if (turn_on || turn_off) {
 179             TPUTS_TRACE("set_attributes");
 180             NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
 181                                     TPARM_9(set_attributes,
 182                                             (newmode & A_STANDOUT) != 0,
 183                                             (newmode & A_UNDERLINE) != 0,
 184                                             (newmode & A_REVERSE) != 0,
 185                                             (newmode & A_BLINK) != 0,
 186                                             (newmode & A_DIM) != 0,
 187                                             (newmode & A_BOLD) != 0,
 188                                             (newmode & A_INVIS) != 0,
 189                                             (newmode & A_PROTECT) != 0,
 190                                             (newmode & A_ALTCHARSET) != 0),
 191                                     1, outc);
 192             previous_attr &= ALL_BUT_COLOR;
 193             previous_pair = 0;
 194         }
 195 #if USE_ITALIC
 196         if (!SP_PARM || SP_PARM->_use_ritm) {
 197             if (turn_on & A_ITALIC) {
 198                 TurnOn(A_ITALIC, enter_italics_mode);
 199             } else if (turn_off & A_ITALIC) {
 200                 TurnOff(A_ITALIC, exit_italics_mode);
 201             }
 202         }
 203 #endif
 204         SetColorsIf((pair != 0) || fix_pair0, previous_attr, previous_pair);
 205     } else {
 206
 207         TR(TRACE_ATTRS, ("turning %s off", _traceattr(turn_off)));
 208
 209         TurnOff(A_ALTCHARSET, exit_alt_charset_mode);
 210
 211         if (!SP_PARM || SP_PARM->_use_rmul) {
 212             TurnOff(A_UNDERLINE, exit_underline_mode);
 213         }
 214
 215         if (!SP_PARM || SP_PARM->_use_rmso) {
 216             TurnOff(A_STANDOUT, exit_standout_mode);
 217         }
 218 #if USE_ITALIC
 219         if (!SP_PARM || SP_PARM->_use_ritm) {
 220             TurnOff(A_ITALIC, exit_italics_mode);
 221         }
 222 #endif
 223         if (turn_off && exit_attribute_mode) {
 224             doPut(exit_attribute_mode);
 225             turn_on |= (newmode & ALL_BUT_COLOR);
 226             previous_attr &= ALL_BUT_COLOR;
 227             previous_pair = 0;
 228         }
 229         SetColorsIf((pair != 0) || fix_pair0, previous_attr, previous_pair);
 230
 231         TR(TRACE_ATTRS, ("turning %s on", _traceattr(turn_on)));
 232         /* *INDENT-OFF* */
 233         TurnOn(A_ALTCHARSET,    enter_alt_charset_mode);
 234         TurnOn(A_BLINK,         enter_blink_mode);
 235         TurnOn(A_BOLD,          enter_bold_mode);
 236         TurnOn(A_DIM,           enter_dim_mode);
 237         TurnOn(A_REVERSE,       enter_reverse_mode);
 238         TurnOn(A_STANDOUT,      enter_standout_mode);
 239         TurnOn(A_PROTECT,       enter_protected_mode);
 240         TurnOn(A_INVIS,         enter_secure_mode);
 241         TurnOn(A_UNDERLINE,     enter_underline_mode);
 242 #if USE_ITALIC
 243         TurnOn(A_ITALIC,        enter_italics_mode);
 244 #endif
 245 #if USE_WIDEC_SUPPORT
 246         TurnOn(A_HORIZONTAL,    enter_horizontal_hl_mode);
 247         TurnOn(A_LEFT,          enter_left_hl_mode);
 248         TurnOn(A_LOW,           enter_low_hl_mode);
 249         TurnOn(A_RIGHT,         enter_right_hl_mode);
 250         TurnOn(A_TOP,           enter_top_hl_mode);
 251         TurnOn(A_VERTICAL,      enter_vertical_hl_mode);
 252 #endif
 253         /* *INDENT-ON* */
 254
 255     }
 256
 257     if (reverse)
 258         newmode |= A_REVERSE;
 259
 260     if (SP_PARM) {
 261         SetAttr(SCREEN_ATTRS(SP_PARM), newmode);
 262         SetPair(SCREEN_ATTRS(SP_PARM), pair);
 263     } else {
 264         previous_attr = newmode;
 265         previous_pair = pair;
 266     }
 267
 268     returnCode(OK);
 269 #else
 270     T((T_CALLED("vid_puts(%s,%d)"), _traceattr(newmode), (int) pair));
 271     set_color(newmode, pair);
 272     returnCode(NCURSES_SP_NAME(vidputs) (NCURSES_SP_ARGx newmode, outc));
 273 #endif
 274 }
 275
 276 #if NCURSES_SP_FUNCS
 277 NCURSES_EXPORT(int)
 278 vid_puts(attr_t newmode,
 279          NCURSES_PAIRS_T pair,
 280          void *opts GCC_UNUSED,
 281          NCURSES_OUTC outc)
 282 {
 283     SetSafeOutcWrapper(outc);
 284     return NCURSES_SP_NAME(vid_puts) (CURRENT_SCREEN,
 285                                       newmode,
 286                                       pair,
 287                                       opts,
 288                                       _nc_outc_wrapper);
 289 }
 290 #endif
 291
 292 #undef vid_attr
 293 NCURSES_EXPORT(int)
 294 NCURSES_SP_NAME(vid_attr) (NCURSES_SP_DCLx
 295                            attr_t newmode,
 296                            NCURSES_PAIRS_T pair,
 297                            void *opts)
 298 {
 299     T((T_CALLED("vid_attr(%s,%d)"), _traceattr(newmode), (int) pair));
 300     returnCode(NCURSES_SP_NAME(vid_puts) (NCURSES_SP_ARGx
 301                                           newmode,
 302                                           pair,
 303                                           opts,
 304                                           NCURSES_SP_NAME(_nc_putchar)));
 305 }
 306
 307 #if NCURSES_SP_FUNCS
 308 NCURSES_EXPORT(int)
 309 vid_attr(attr_t newmode, NCURSES_PAIRS_T pair, void *opts)
 310 {
 311     return NCURSES_SP_NAME(vid_attr) (CURRENT_SCREEN, newmode, pair, opts);
 312 }
 313 #endif
 314
 315 /*
 316  * This implementation uses the same mask values for A_xxx and WA_xxx, so
 317  * we can use termattrs() for part of the logic.
 318  */
 319 NCURSES_EXPORT(attr_t)
 320 NCURSES_SP_NAME(term_attrs) (NCURSES_SP_DCL0)
 321 {
 322     attr_t attrs = 0;
 323
 324     T((T_CALLED("term_attrs()")));
 325     if (SP_PARM) {
 326         attrs = NCURSES_SP_NAME(termattrs) (NCURSES_SP_ARG);
 327
 328         /* these are only supported for wide-character mode */
 329         if (enter_horizontal_hl_mode)
 330             attrs |= WA_HORIZONTAL;
 331         if (enter_left_hl_mode)
 332             attrs |= WA_LEFT;
 333         if (enter_low_hl_mode)
 334             attrs |= WA_LOW;
 335         if (enter_right_hl_mode)
 336             attrs |= WA_RIGHT;
 337         if (enter_top_hl_mode)
 338             attrs |= WA_TOP;
 339         if (enter_vertical_hl_mode)
 340             attrs |= WA_VERTICAL;
 341     }
 342
 343     returnAttr(attrs);
 344 }
 345
 346 #if NCURSES_SP_FUNCS
 347 NCURSES_EXPORT(attr_t)
 348 term_attrs(void)
 349 {
 350     return NCURSES_SP_NAME(term_attrs) (CURRENT_SCREEN);
 351 }
 352 #endif