1 /**************************************************************************** 2 * Copyright (c) 1998-2009,2010 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: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 31 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 32 ****************************************************************************/ 33 34 /* 35 ** lib_window.c 36 ** 37 ** 38 */ 39 40 #include <curses.priv.h> 41 42 MODULE_ID("$Id: lib_window.c,v 1.29 2010/12/19 01:47:22 tom Exp $") 43 44 NCURSES_EXPORT(void) 45 _nc_synchook(WINDOW *win) 46 /* hook to be called after each window change */ 47 { 48 if (win->_immed) 49 wrefresh(win); 50 if (win->_sync) 51 wsyncup(win); 52 } 53 54 NCURSES_EXPORT(int) 55 mvderwin(WINDOW *win, int y, int x) 56 /* move a derived window */ 57 { 58 WINDOW *orig; 59 int i; 60 int rc = ERR; 61 62 T((T_CALLED("mvderwin(%p,%d,%d)"), (void *) win, y, x)); 63 64 if (win != 0 65 && (orig = win->_parent) != 0 66 && (x >= 0 && y >= 0) 67 && (x + getmaxx(win) <= getmaxx(orig)) 68 && (y + getmaxy(win) <= getmaxy(orig))) { 69 wsyncup(win); 70 win->_parx = x; 71 win->_pary = y; 72 for (i = 0; i < getmaxy(win); i++) 73 win->_line[i].text = &(orig->_line[y++].text[x]); 74 rc = OK; 75 } 76 returnCode(rc); 77 } 78 79 NCURSES_EXPORT(int) 80 syncok(WINDOW *win, bool bf) 81 /* enable/disable automatic wsyncup() on each change to window */ 82 { 83 T((T_CALLED("syncok(%p,%d)"), (void *) win, bf)); 84 85 if (win) { 86 win->_sync = bf; 87 returnCode(OK); 88 } else 89 returnCode(ERR); 90 } 91 92 NCURSES_EXPORT(void) 93 wsyncup(WINDOW *win) 94 /* mark changed every cell in win's ancestors that is changed in win */ 95 /* Rewritten by J. Pfeifer, 1-Apr-96 (don't even think that...) */ 96 { 97 WINDOW *wp; 98 99 T((T_CALLED("wsyncup(%p)"), (void *) win)); 100 if (win && win->_parent) { 101 for (wp = win; wp->_parent; wp = wp->_parent) { 102 int y; 103 WINDOW *pp = wp->_parent; 104 105 assert((wp->_pary <= pp->_maxy) && 106 ((wp->_pary + wp->_maxy) <= pp->_maxy)); 107 108 for (y = 0; y <= wp->_maxy; y++) { 109 int left = wp->_line[y].firstchar; 110 if (left >= 0) { /* line is touched */ 111 struct ldat *line = &(pp->_line[wp->_pary + y]); 112 /* left & right character in parent window coordinates */ 113 int right = wp->_line[y].lastchar + wp->_parx; 114 left += wp->_parx; 115 116 CHANGED_RANGE(line, left, right); 117 } 118 } 119 } 120 } 121 returnVoid; 122 } 123 124 NCURSES_EXPORT(void) 125 wsyncdown(WINDOW *win) 126 /* mark changed every cell in win that is changed in any of its ancestors */ 127 /* Rewritten by J. Pfeifer, 1-Apr-96 (don't even think that...) */ 128 { 129 T((T_CALLED("wsyncdown(%p)"), (void *) win)); 130 131 if (win && win->_parent) { 132 WINDOW *pp = win->_parent; 133 int y; 134 135 /* This recursion guarantees, that the changes are propagated down- 136 wards from the root to our direct parent. */ 137 wsyncdown(pp); 138 139 /* and now we only have to propagate the changes from our direct 140 parent, if there are any. */ 141 assert((win->_pary <= pp->_maxy) && 142 ((win->_pary + win->_maxy) <= pp->_maxy)); 143 144 for (y = 0; y <= win->_maxy; y++) { 145 if (pp->_line[win->_pary + y].firstchar >= 0) { /* parent changed */ 146 struct ldat *line = &(win->_line[y]); 147 /* left and right character in child coordinates */ 148 int left = pp->_line[win->_pary + y].firstchar - win->_parx; 149 int right = pp->_line[win->_pary + y].lastchar - win->_parx; 150 /* The change may be outside the child's range */ 151 if (left < 0) 152 left = 0; 153 if (right > win->_maxx) 154 right = win->_maxx; 155 CHANGED_RANGE(line, left, right); 156 } 157 } 158 } 159 returnVoid; 160 } 161 162 NCURSES_EXPORT(void) 163 wcursyncup(WINDOW *win) 164 /* sync the cursor in all derived windows to its value in the base window */ 165 { 166 WINDOW *wp; 167 168 T((T_CALLED("wcursyncup(%p)"), (void *) win)); 169 for (wp = win; wp && wp->_parent; wp = wp->_parent) { 170 wmove(wp->_parent, wp->_pary + wp->_cury, wp->_parx + wp->_curx); 171 } 172 returnVoid; 173 } 174 175 NCURSES_EXPORT(WINDOW *) 176 dupwin(WINDOW *win) 177 /* make an exact duplicate of the given window */ 178 { 179 WINDOW *nwin = 0; 180 size_t linesize; 181 int i; 182 183 T((T_CALLED("dupwin(%p)"), (void *) win)); 184 185 if (win != 0) { 186 #if NCURSES_SP_FUNCS 187 SCREEN *sp = _nc_screen_of(win); 188 #endif 189 _nc_lock_global(curses); 190 if (win->_flags & _ISPAD) { 191 nwin = NCURSES_SP_NAME(newpad) (NCURSES_SP_ARGx 192 win->_maxy + 1, 193 win->_maxx + 1); 194 } else { 195 nwin = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx 196 win->_maxy + 1, 197 win->_maxx + 1, 198 win->_begy, 199 win->_begx); 200 } 201 202 if (nwin != 0) { 203 204 nwin->_curx = win->_curx; 205 nwin->_cury = win->_cury; 206 nwin->_maxy = win->_maxy; 207 nwin->_maxx = win->_maxx; 208 nwin->_begy = win->_begy; 209 nwin->_begx = win->_begx; 210 nwin->_yoffset = win->_yoffset; 211 212 nwin->_flags = win->_flags & ~_SUBWIN; 213 /* Due to the use of newwin(), the clone is not a subwindow. 214 * The text is really copied into the clone. 215 */ 216 217 WINDOW_ATTRS(nwin) = WINDOW_ATTRS(win); 218 nwin->_nc_bkgd = win->_nc_bkgd; 219 220 nwin->_notimeout = win->_notimeout; 221 nwin->_clear = win->_clear; 222 nwin->_leaveok = win->_leaveok; 223 nwin->_scroll = win->_scroll; 224 nwin->_idlok = win->_idlok; 225 nwin->_idcok = win->_idcok; 226 nwin->_immed = win->_immed; 227 nwin->_sync = win->_sync; 228 nwin->_use_keypad = win->_use_keypad; 229 nwin->_delay = win->_delay; 230 231 nwin->_parx = 0; 232 nwin->_pary = 0; 233 nwin->_parent = (WINDOW *) 0; 234 /* See above: the clone isn't a subwindow! */ 235 236 nwin->_regtop = win->_regtop; 237 nwin->_regbottom = win->_regbottom; 238 239 if (win->_flags & _ISPAD) 240 nwin->_pad = win->_pad; 241 242 linesize = (unsigned) (win->_maxx + 1) * sizeof(NCURSES_CH_T); 243 for (i = 0; i <= nwin->_maxy; i++) { 244 memcpy(nwin->_line[i].text, win->_line[i].text, linesize); 245 nwin->_line[i].firstchar = win->_line[i].firstchar; 246 nwin->_line[i].lastchar = win->_line[i].lastchar; 247 } 248 } 249 _nc_unlock_global(curses); 250 } 251 returnWin(nwin); 252 } 253