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

   1 /****************************************************************************
   2  * Copyright (c) 2002-2009,2010 Free Software Foundation, Inc.              *
   3  *                                                                          *
   4  * Permission is hereby granted, free of charge, to any person obtaining a  *
   5  * copy of this software and associated documentation files (the            *
   6  * "Software"), to deal in the Software without restriction, including      *
   7  * without limitation the rights to use, copy, modify, merge, publish,      *
   8  * distribute, distribute with modifications, sublicense, and/or sell       *
   9  * copies of the Software, and to permit persons to whom the Software is    *
  10  * furnished to do so, subject to the following conditions:                 *
  11  *                                                                          *
  12  * The above copyright notice and this permission notice shall be included  *
  13  * in all copies or substantial portions of the Software.                   *
  14  *                                                                          *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
  18  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
  21  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
  22  *                                                                          *
  23  * Except as contained in this notice, the name(s) of the above copyright   *
  24  * holders shall not be used in advertising or otherwise to promote the     *
  25  * sale, use or other dealings in this Software without prior written       *
  26  * authorization.                                                           *
  27  ****************************************************************************/
  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 1.14 2010/12/19 01:44:24 tom Exp $")
  40
  41 #define doPut(mode) TPUTS_TRACE(#mode); NCURSES_SP_NAME(tputs)(NCURSES_SP_ARGx mode, 1, outc)
  42
  43 #define TurnOn(mask,mode) \
  44         if ((turn_on & mask) && mode) { doPut(mode); }
  45
  46 #define TurnOff(mask,mode) \
  47         if ((turn_off & mask) && mode) { doPut(mode); turn_off &= ~mask; }
  48
  49         /* if there is no current screen, assume we *can* do color */
  50 #define SetColorsIf(why, old_attr, old_pair) \
  51         if (can_color && (why)) { \
  52                 TR(TRACE_ATTRS, ("old pair = %d -- new pair = %d", old_pair, pair)); \
  53                 if ((pair != old_pair) \
  54                  || (fix_pair0 && (pair == 0)) \
  55                  || (reverse ^ ((old_attr & A_REVERSE) != 0))) { \
  56                     NCURSES_SP_NAME(_nc_do_color) (NCURSES_SP_ARGx \
  57                                                    old_pair, pair, \
  58                                                    reverse, outc); \
  59                 } \
  60         }
  61
  62 #define set_color(mode, pair) \
  63         mode &= ALL_BUT_COLOR; \
  64         mode |= (attr_t) ColorPair(pair)
  65
  66 NCURSES_EXPORT(int)
  67 NCURSES_SP_NAME(vid_puts) (NCURSES_SP_DCLx
  68                            attr_t newmode,
  69                            short pair,
  70                            void *opts GCC_UNUSED,
  71                            NCURSES_SP_OUTC outc)
  72 {
  73 #if NCURSES_EXT_COLORS
  74     static attr_t previous_attr = A_NORMAL;
  75     static int previous_pair = 0;
  76
  77     attr_t turn_on, turn_off;
  78     bool reverse = FALSE;
  79     bool can_color = (SP_PARM == 0 || SP_PARM->_coloron);
  80 #if NCURSES_EXT_FUNCS
  81     bool fix_pair0 = (SP_PARM != 0 && SP_PARM->_coloron && !SP_PARM->_default_color);
  82 #else
  83 #define fix_pair0 FALSE
  84 #endif
  85
  86     newmode &= A_ATTRIBUTES;
  87     T((T_CALLED("vid_puts(%s,%d)"), _traceattr(newmode), pair));
  88
  89     /* this allows us to go on whether or not newterm() has been called */
  90     if (SP_PARM) {
  91         previous_attr = AttrOf(SCREEN_ATTRS(SP_PARM));
  92         previous_pair = GetPair(SCREEN_ATTRS(SP_PARM));
  93     }
  94
  95     TR(TRACE_ATTRS, ("previous attribute was %s, %d",
  96                      _traceattr(previous_attr), previous_pair));
  97
  98 #if !USE_XMC_SUPPORT
  99     if ((SP_PARM != 0)
 100         && (magic_cookie_glitch > 0))
 101         newmode &= ~(SP_PARM->_xmc_suppress);
 102 #endif
 103
 104     /*
 105      * If we have a terminal that cannot combine color with video
 106      * attributes, use the colors in preference.
 107      */
 108     if ((pair != 0
 109          || fix_pair0)
 110         && (no_color_video > 0)) {
 111         /*
 112          * If we had chosen the A_xxx definitions to correspond to the
 113          * no_color_video mask, we could simply shift it up and mask off the
 114          * attributes.  But we did not (actually copied Solaris' definitions).
 115          * However, this is still simpler/faster than a lookup table.
 116          *
 117          * The 63 corresponds to A_STANDOUT, A_UNDERLINE, A_REVERSE, A_BLINK,
 118          * A_DIM, A_BOLD which are 1:1 with no_color_video.  The bits that
 119          * correspond to A_INVIS, A_PROTECT (192) must be shifted up 1 and
 120          * A_ALTCHARSET (256) down 2 to line up.  We use the NCURSES_BITS
 121          * macro so this will work properly for the wide-character layout.
 122          */
 123         unsigned value = no_color_video;
 124         attr_t mask = NCURSES_BITS((value & 63)
 125                                    | ((value & 192) << 1)
 126                                    | ((value & 256) >> 2), 8);
 127
 128         if ((mask & A_REVERSE) != 0
 129             && (newmode & A_REVERSE) != 0) {
 130             reverse = TRUE;
 131             mask &= ~A_REVERSE;
 132         }
 133         newmode &= ~mask;
 134     }
 135
 136     if (newmode == previous_attr
 137         && pair == previous_pair)
 138         returnCode(OK);
 139
 140     if (reverse) {
 141         newmode &= ~A_REVERSE;
 142     }
 143
 144     turn_off = (~newmode & previous_attr) & ALL_BUT_COLOR;
 145     turn_on = (newmode & ~previous_attr) & ALL_BUT_COLOR;
 146
 147     SetColorsIf(((pair == 0) && !fix_pair0), previous_attr, previous_pair);
 148
 149     if (newmode == A_NORMAL) {
 150         if ((previous_attr & A_ALTCHARSET) && exit_alt_charset_mode) {
 151             doPut(exit_alt_charset_mode);
 152             previous_attr &= ~A_ALTCHARSET;
 153         }
 154         if (previous_attr) {
 155             if (exit_attribute_mode) {
 156                 doPut(exit_attribute_mode);
 157             } else {
 158                 if (!SP_PARM || SP_PARM->_use_rmul) {
 159                     TurnOff(A_UNDERLINE, exit_underline_mode);
 160                 }
 161                 if (!SP_PARM || SP_PARM->_use_rmso) {
 162                     TurnOff(A_STANDOUT, exit_standout_mode);
 163                 }
 164             }
 165             previous_attr &= ALL_BUT_COLOR;
 166             previous_pair = 0;
 167         }
 168
 169         SetColorsIf((pair != 0) || fix_pair0, previous_attr, previous_pair);
 170     } else if (set_attributes) {
 171         if (turn_on || turn_off) {
 172             TPUTS_TRACE("set_attributes");
 173             NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
 174                                     TPARM_9(set_attributes,
 175                                             (newmode & A_STANDOUT) != 0,
 176                                             (newmode & A_UNDERLINE) != 0,
 177                                             (newmode & A_REVERSE) != 0,
 178                                             (newmode & A_BLINK) != 0,
 179                                             (newmode & A_DIM) != 0,
 180                                             (newmode & A_BOLD) != 0,
 181                                             (newmode & A_INVIS) != 0,
 182                                             (newmode & A_PROTECT) != 0,
 183                                             (newmode & A_ALTCHARSET) != 0),
 184                                     1, outc);
 185             previous_attr &= ALL_BUT_COLOR;
 186             previous_pair = 0;
 187         }
 188         SetColorsIf((pair != 0) || fix_pair0, previous_attr, previous_pair);
 189     } else {
 190
 191         TR(TRACE_ATTRS, ("turning %s off", _traceattr(turn_off)));
 192
 193         TurnOff(A_ALTCHARSET, exit_alt_charset_mode);
 194
 195         if (!SP_PARM || SP_PARM->_use_rmul) {
 196             TurnOff(A_UNDERLINE, exit_underline_mode);
 197         }
 198
 199         if (!SP_PARM || SP_PARM->_use_rmso) {
 200             TurnOff(A_STANDOUT, exit_standout_mode);
 201         }
 202
 203         if (turn_off && exit_attribute_mode) {
 204             doPut(exit_attribute_mode);
 205             turn_on |= (newmode & ALL_BUT_COLOR);
 206             previous_attr &= ALL_BUT_COLOR;
 207             previous_pair = 0;
 208         }
 209         SetColorsIf((pair != 0) || fix_pair0, previous_attr, previous_pair);
 210
 211         TR(TRACE_ATTRS, ("turning %s on", _traceattr(turn_on)));
 212         /* *INDENT-OFF* */
 213         TurnOn(A_ALTCHARSET,    enter_alt_charset_mode);
 214         TurnOn(A_BLINK,         enter_blink_mode);
 215         TurnOn(A_BOLD,          enter_bold_mode);
 216         TurnOn(A_DIM,           enter_dim_mode);
 217         TurnOn(A_REVERSE,       enter_reverse_mode);
 218         TurnOn(A_STANDOUT,      enter_standout_mode);
 219         TurnOn(A_PROTECT,       enter_protected_mode);
 220         TurnOn(A_INVIS,         enter_secure_mode);
 221         TurnOn(A_UNDERLINE,     enter_underline_mode);
 222 #if USE_WIDEC_SUPPORT
 223         TurnOn(A_HORIZONTAL,    enter_horizontal_hl_mode);
 224         TurnOn(A_LEFT,          enter_left_hl_mode);
 225         TurnOn(A_LOW,           enter_low_hl_mode);
 226         TurnOn(A_RIGHT,         enter_right_hl_mode);
 227         TurnOn(A_TOP,           enter_top_hl_mode);
 228         TurnOn(A_VERTICAL,      enter_vertical_hl_mode);
 229 #endif
 230         /* *INDENT-ON* */
 231
 232     }
 233
 234     if (reverse)
 235         newmode |= A_REVERSE;
 236
 237     if (SP_PARM) {
 238         SetAttr(SCREEN_ATTRS(SP_PARM), newmode);
 239         SetPair(SCREEN_ATTRS(SP_PARM), pair);
 240     } else {
 241         previous_attr = newmode;
 242         previous_pair = pair;
 243     }
 244
 245     returnCode(OK);
 246 #else
 247     T((T_CALLED("vid_puts(%s,%d)"), _traceattr(newmode), pair));
 248     set_color(newmode, pair);
 249     returnCode(NCURSES_SP_NAME(vidputs) (NCURSES_SP_ARGx newmode, outc));
 250 #endif
 251 }
 252
 253 #if NCURSES_SP_FUNCS
 254 NCURSES_EXPORT(int)
 255 vid_puts(attr_t newmode,
 256          short pair,
 257          void *opts GCC_UNUSED,
 258          NCURSES_OUTC outc)
 259 {
 260     SetSafeOutcWrapper(outc);
 261     return NCURSES_SP_NAME(vid_puts) (CURRENT_SCREEN,
 262                                       newmode,
 263                                       pair,
 264                                       opts,
 265                                       _nc_outc_wrapper);
 266 }
 267 #endif
 268
 269 #undef vid_attr
 270 NCURSES_EXPORT(int)
 271 NCURSES_SP_NAME(vid_attr) (NCURSES_SP_DCLx
 272                            attr_t newmode,
 273                            short pair,
 274                            void *opts)
 275 {
 276     T((T_CALLED("vid_attr(%s,%d)"), _traceattr(newmode), pair));
 277     returnCode(NCURSES_SP_NAME(vid_puts) (NCURSES_SP_ARGx
 278                                           newmode,
 279                                           pair,
 280                                           opts,
 281                                           NCURSES_SP_NAME(_nc_outch)));
 282 }
 283
 284 #if NCURSES_SP_FUNCS
 285 NCURSES_EXPORT(int)
 286 vid_attr(attr_t newmode, short pair, void *opts)
 287 {
 288     return NCURSES_SP_NAME(vid_attr) (CURRENT_SCREEN, newmode, pair, opts);
 289 }
 290 #endif
 291
 292 /*
 293  * This implementation uses the same mask values for A_xxx and WA_xxx, so
 294  * we can use termattrs() for part of the logic.
 295  */
 296 NCURSES_EXPORT(attr_t)
 297 NCURSES_SP_NAME(term_attrs) (NCURSES_SP_DCL0)
 298 {
 299     attr_t attrs;
 300
 301     T((T_CALLED("term_attrs()")));
 302     attrs = SP_PARM ? NCURSES_SP_NAME(termattrs) (NCURSES_SP_ARG) : 0;
 303
 304     /* these are only supported for wide-character mode */
 305     if (enter_horizontal_hl_mode)
 306         attrs |= WA_HORIZONTAL;
 307     if (enter_left_hl_mode)
 308         attrs |= WA_LEFT;
 309     if (enter_low_hl_mode)
 310         attrs |= WA_LOW;
 311     if (enter_right_hl_mode)
 312         attrs |= WA_RIGHT;
 313     if (enter_top_hl_mode)
 314         attrs |= WA_TOP;
 315     if (enter_vertical_hl_mode)
 316         attrs |= WA_VERTICAL;
 317
 318     returnAttr(attrs);
 319 }
 320
 321 #if NCURSES_SP_FUNCS
 322 NCURSES_EXPORT(attr_t)
 323 term_attrs(void)
 324 {
 325     return NCURSES_SP_NAME(term_attrs) (CURRENT_SCREEN);
 326 }
 327 #endif