1 /**************************************************************************** 2 * Copyright (c) 2002-2005,2006 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 #include <term.h> 35 36 MODULE_ID("$Id: lib_vid_attr.c,v 1.4 2006/11/26 00:26:00 tom Exp $") 37 38 #define doPut(mode) TPUTS_TRACE(#mode); tputs(mode, 1, outc) 39 40 #define TurnOn(mask,mode) \ 41 if ((turn_on & mask) && mode) { doPut(mode); } 42 43 #define TurnOff(mask,mode) \ 44 if ((turn_off & mask) && mode) { doPut(mode); turn_off &= ~mask; } 45 46 /* if there is no current screen, assume we *can* do color */ 47 #define SetColorsIf(why, old_attr, old_pair) \ 48 if (can_color && (why)) { \ 49 TR(TRACE_ATTRS, ("old pair = %d -- new pair = %d", old_pair, pair)); \ 50 if ((pair != old_pair) \ 51 || (fix_pair0 && (pair == 0)) \ 52 || (reverse ^ ((old_attr & A_REVERSE) != 0))) { \ 53 _nc_do_color(old_pair, pair, reverse, outc); \ 54 } \ 55 } 56 57 #define set_color(mode, pair) mode &= ALL_BUT_COLOR; mode |= COLOR_PAIR(pair) 58 59 NCURSES_EXPORT(int) 60 vid_puts(attr_t newmode, short pair, void *opts GCC_UNUSED, int (*outc) (int)) 61 { 62 #if NCURSES_EXT_COLORS 63 static attr_t previous_attr = A_NORMAL; 64 static int previous_pair = 0; 65 66 attr_t turn_on, turn_off; 67 bool reverse = FALSE; 68 bool can_color = (SP == 0 || SP->_coloron); 69 #if NCURSES_EXT_FUNCS 70 bool fix_pair0 = (SP != 0 && SP->_coloron && !SP->_default_color); 71 #else 72 #define fix_pair0 FALSE 73 #endif 74 75 T((T_CALLED("vid_puts(%s,%d)"), _traceattr(newmode), pair)); 76 77 /* this allows us to go on whether or not newterm() has been called */ 78 if (SP) { 79 previous_attr = AttrOf(SCREEN_ATTRS(SP)); 80 previous_pair = GetPair(SCREEN_ATTRS(SP)); 81 } 82 83 TR(TRACE_ATTRS, ("previous attribute was %s, %d", 84 _traceattr(previous_attr), previous_pair)); 85 86 #if !USE_XMC_SUPPORT 87 if ((SP != 0) 88 && (magic_cookie_glitch > 0)) 89 newmode &= ~(SP->_xmc_suppress); 90 #endif 91 92 /* 93 * If we have a terminal that cannot combine color with video 94 * attributes, use the colors in preference. 95 */ 96 if ((pair != 0 97 || fix_pair0) 98 && (no_color_video > 0)) { 99 /* 100 * If we had chosen the A_xxx definitions to correspond to the 101 * no_color_video mask, we could simply shift it up and mask off the 102 * attributes. But we did not (actually copied Solaris' definitions). 103 * However, this is still simpler/faster than a lookup table. 104 * 105 * The 63 corresponds to A_STANDOUT, A_UNDERLINE, A_REVERSE, A_BLINK, 106 * A_DIM, A_BOLD which are 1:1 with no_color_video. The bits that 107 * correspond to A_INVIS, A_PROTECT (192) must be shifted up 1 and 108 * A_ALTCHARSET (256) down 2 to line up. We use the NCURSES_BITS 109 * macro so this will work properly for the wide-character layout. 110 */ 111 unsigned value = no_color_video; 112 attr_t mask = NCURSES_BITS((value & 63) 113 | ((value & 192) << 1) 114 | ((value & 256) >> 2), 8); 115 116 if ((mask & A_REVERSE) != 0 117 && (newmode & A_REVERSE) != 0) { 118 reverse = TRUE; 119 mask &= ~A_REVERSE; 120 } 121 newmode &= ~mask; 122 } 123 124 if (newmode == previous_attr 125 && pair == previous_pair) 126 returnCode(OK); 127 128 if (reverse) { 129 newmode &= ~A_REVERSE; 130 } 131 132 turn_off = (~newmode & previous_attr) & ALL_BUT_COLOR; 133 turn_on = (newmode & ~previous_attr) & ALL_BUT_COLOR; 134 135 SetColorsIf(((pair == 0) && !fix_pair0), previous_attr, previous_pair); 136 137 if (newmode == A_NORMAL) { 138 if ((previous_attr & A_ALTCHARSET) && exit_alt_charset_mode) { 139 doPut(exit_alt_charset_mode); 140 previous_attr &= ~A_ALTCHARSET; 141 } 142 if (previous_attr) { 143 if (exit_attribute_mode) { 144 doPut(exit_attribute_mode); 145 } else { 146 if (!SP || SP->_use_rmul) { 147 TurnOff(A_UNDERLINE, exit_underline_mode); 148 } 149 if (!SP || SP->_use_rmso) { 150 TurnOff(A_STANDOUT, exit_standout_mode); 151 } 152 } 153 previous_attr &= ALL_BUT_COLOR; 154 previous_pair = 0; 155 } 156 157 SetColorsIf((pair != 0) || fix_pair0, previous_attr, previous_pair); 158 } else if (set_attributes) { 159 if (turn_on || turn_off) { 160 TPUTS_TRACE("set_attributes"); 161 tputs(TPARM_9(set_attributes, 162 (newmode & A_STANDOUT) != 0, 163 (newmode & A_UNDERLINE) != 0, 164 (newmode & A_REVERSE) != 0, 165 (newmode & A_BLINK) != 0, 166 (newmode & A_DIM) != 0, 167 (newmode & A_BOLD) != 0, 168 (newmode & A_INVIS) != 0, 169 (newmode & A_PROTECT) != 0, 170 (newmode & A_ALTCHARSET) != 0), 1, outc); 171 previous_attr &= ALL_BUT_COLOR; 172 previous_pair = 0; 173 } 174 SetColorsIf((pair != 0) || fix_pair0, previous_attr, previous_pair); 175 } else { 176 177 TR(TRACE_ATTRS, ("turning %s off", _traceattr(turn_off))); 178 179 TurnOff(A_ALTCHARSET, exit_alt_charset_mode); 180 181 if (!SP || SP->_use_rmul) { 182 TurnOff(A_UNDERLINE, exit_underline_mode); 183 } 184 185 if (!SP || SP->_use_rmso) { 186 TurnOff(A_STANDOUT, exit_standout_mode); 187 } 188 189 if (turn_off && exit_attribute_mode) { 190 doPut(exit_attribute_mode); 191 turn_on |= (newmode & ALL_BUT_COLOR); 192 previous_attr &= ALL_BUT_COLOR; 193 previous_pair = 0; 194 } 195 SetColorsIf((pair != 0) || fix_pair0, previous_attr, previous_pair); 196 197 TR(TRACE_ATTRS, ("turning %s on", _traceattr(turn_on))); 198 /* *INDENT-OFF* */ 199 TurnOn(A_ALTCHARSET, enter_alt_charset_mode); 200 TurnOn(A_BLINK, enter_blink_mode); 201 TurnOn(A_BOLD, enter_bold_mode); 202 TurnOn(A_DIM, enter_dim_mode); 203 TurnOn(A_REVERSE, enter_reverse_mode); 204 TurnOn(A_STANDOUT, enter_standout_mode); 205 TurnOn(A_PROTECT, enter_protected_mode); 206 TurnOn(A_INVIS, enter_secure_mode); 207 TurnOn(A_UNDERLINE, enter_underline_mode); 208 #if USE_WIDEC_SUPPORT 209 TurnOn(A_HORIZONTAL, enter_horizontal_hl_mode); 210 TurnOn(A_LEFT, enter_left_hl_mode); 211 TurnOn(A_LOW, enter_low_hl_mode); 212 TurnOn(A_RIGHT, enter_right_hl_mode); 213 TurnOn(A_TOP, enter_top_hl_mode); 214 TurnOn(A_VERTICAL, enter_vertical_hl_mode); 215 #endif 216 /* *INDENT-ON* */ 217 218 } 219 220 if (reverse) 221 newmode |= A_REVERSE; 222 223 if (SP) { 224 SetAttr(SCREEN_ATTRS(SP), newmode); 225 SetPair(SCREEN_ATTRS(SP), pair); 226 } else { 227 previous_attr = newmode; 228 previous_pair = pair; 229 } 230 231 returnCode(OK); 232 #else 233 T((T_CALLED("vid_puts(%s,%d)"), _traceattr(newmode), pair)); 234 set_color(newmode, pair); 235 returnCode(vidputs(newmode, outc)); 236 #endif 237 } 238 239 #undef vid_attr 240 NCURSES_EXPORT(int) 241 vid_attr(attr_t newmode, short pair, void *opts) 242 { 243 T((T_CALLED("vid_attr(%s,%d)"), _traceattr(newmode), pair)); 244 returnCode(vid_puts(newmode, pair, opts, _nc_outch)); 245 } 246 247 /* 248 * This implementation uses the same mask values for A_xxx and WA_xxx, so 249 * we can use termattrs() for part of the logic. 250 */ 251 NCURSES_EXPORT(attr_t) 252 term_attrs(void) 253 { 254 attr_t attrs; 255 256 T((T_CALLED("term_attrs()"))); 257 attrs = termattrs(); 258 259 /* these are only supported for wide-character mode */ 260 if (enter_horizontal_hl_mode) 261 attrs |= WA_HORIZONTAL; 262 if (enter_left_hl_mode) 263 attrs |= WA_LEFT; 264 if (enter_low_hl_mode) 265 attrs |= WA_LOW; 266 if (enter_right_hl_mode) 267 attrs |= WA_RIGHT; 268 if (enter_top_hl_mode) 269 attrs |= WA_TOP; 270 if (enter_vertical_hl_mode) 271 attrs |= WA_VERTICAL; 272 273 returnAttr(attrs); 274 } 275