1 /**************************************************************************** 2 * Copyright (c) 1998-2007,2008 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 1.25 2008/06/07 14:12:56 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 61 T((T_CALLED("mvderwin(%p,%d,%d)"), win, y, x)); 62 63 if (win && (orig = win->_parent)) { 64 if (win->_parx == x && win->_pary == y) 65 returnCode(OK); 66 if (x < 0 || y < 0) 67 returnCode(ERR); 68 if ((x + getmaxx(win) > getmaxx(orig)) || 69 (y + getmaxy(win) > getmaxy(orig))) 70 returnCode(ERR); 71 } else 72 returnCode(ERR); 73 wsyncup(win); 74 win->_parx = x; 75 win->_pary = y; 76 for (i = 0; i < getmaxy(win); i++) 77 win->_line[i].text = &(orig->_line[y++].text[x]); 78 returnCode(OK); 79 } 80 81 NCURSES_EXPORT(int) 82 syncok(WINDOW *win, bool bf) 83 /* enable/disable automatic wsyncup() on each change to window */ 84 { 85 T((T_CALLED("syncok(%p,%d)"), win, bf)); 86 87 if (win) { 88 win->_sync = bf; 89 returnCode(OK); 90 } else 91 returnCode(ERR); 92 } 93 94 NCURSES_EXPORT(void) 95 wsyncup(WINDOW *win) 96 /* mark changed every cell in win's ancestors that is changed in win */ 97 /* Rewritten by J. Pfeifer, 1-Apr-96 (don't even think that...) */ 98 { 99 WINDOW *wp; 100 101 T((T_CALLED("wsyncup(%p)"), win)); 102 if (win && win->_parent) { 103 for (wp = win; wp->_parent; wp = wp->_parent) { 104 int y; 105 WINDOW *pp = wp->_parent; 106 107 assert((wp->_pary <= pp->_maxy) && 108 ((wp->_pary + wp->_maxy) <= pp->_maxy)); 109 110 for (y = 0; y <= wp->_maxy; y++) { 111 int left = wp->_line[y].firstchar; 112 if (left >= 0) { /* line is touched */ 113 struct ldat *line = &(pp->_line[wp->_pary + y]); 114 /* left & right character in parent window coordinates */ 115 int right = wp->_line[y].lastchar + wp->_parx; 116 left += wp->_parx; 117 118 CHANGED_RANGE(line, left, right); 119 } 120 } 121 } 122 } 123 returnVoid; 124 } 125 126 NCURSES_EXPORT(void) 127 wsyncdown(WINDOW *win) 128 /* mark changed every cell in win that is changed in any of its ancestors */ 129 /* Rewritten by J. Pfeifer, 1-Apr-96 (don't even think that...) */ 130 { 131 T((T_CALLED("wsyncdown(%p)"), win)); 132 133 if (win && win->_parent) { 134 WINDOW *pp = win->_parent; 135 int y; 136 137 /* This recursion guarantees, that the changes are propagated down- 138 wards from the root to our direct parent. */ 139 wsyncdown(pp); 140 141 /* and now we only have to propagate the changes from our direct 142 parent, if there are any. */ 143 assert((win->_pary <= pp->_maxy) && 144 ((win->_pary + win->_maxy) <= pp->_maxy)); 145 146 for (y = 0; y <= win->_maxy; y++) { 147 if (pp->_line[win->_pary + y].firstchar >= 0) { /* parent changed */ 148 struct ldat *line = &(win->_line[y]); 149 /* left and right character in child coordinates */ 150 int left = pp->_line[win->_pary + y].firstchar - win->_parx; 151 int right = pp->_line[win->_pary + y].lastchar - win->_parx; 152 /* The change may be outside the child's range */ 153 if (left < 0) 154 left = 0; 155 if (right > win->_maxx) 156 right = win->_maxx; 157 CHANGED_RANGE(line, left, right); 158 } 159 } 160 } 161 returnVoid; 162 } 163 164 NCURSES_EXPORT(void) 165 wcursyncup(WINDOW *win) 166 /* sync the cursor in all derived windows to its value in the base window */ 167 { 168 WINDOW *wp; 169 170 T((T_CALLED("wcursyncup(%p)"), win)); 171 for (wp = win; wp && wp->_parent; wp = wp->_parent) { 172 wmove(wp->_parent, wp->_pary + wp->_cury, wp->_parx + wp->_curx); 173 } 174 returnVoid; 175 } 176 177 NCURSES_EXPORT(WINDOW *) 178 dupwin(WINDOW *win) 179 /* make an exact duplicate of the given window */ 180 { 181 WINDOW *nwin = 0; 182 size_t linesize; 183 int i; 184 185 T((T_CALLED("dupwin(%p)"), win)); 186 187 if (win != 0) { 188 189 _nc_lock_global(curses); 190 if (win->_flags & _ISPAD) { 191 nwin = newpad(win->_maxy + 1, 192 win->_maxx + 1); 193 } else { 194 nwin = newwin(win->_maxy + 1, 195 win->_maxx + 1, 196 win->_begy, 197 win->_begx); 198 } 199 200 if (nwin != 0) { 201 202 nwin->_curx = win->_curx; 203 nwin->_cury = win->_cury; 204 nwin->_maxy = win->_maxy; 205 nwin->_maxx = win->_maxx; 206 nwin->_begy = win->_begy; 207 nwin->_begx = win->_begx; 208 nwin->_yoffset = win->_yoffset; 209 210 nwin->_flags = win->_flags & ~_SUBWIN; 211 /* Due to the use of newwin(), the clone is not a subwindow. 212 * The text is really copied into the clone. 213 */ 214 215 WINDOW_ATTRS(nwin) = WINDOW_ATTRS(win); 216 nwin->_nc_bkgd = win->_nc_bkgd; 217 218 nwin->_notimeout = win->_notimeout; 219 nwin->_clear = win->_clear; 220 nwin->_leaveok = win->_leaveok; 221 nwin->_scroll = win->_scroll; 222 nwin->_idlok = win->_idlok; 223 nwin->_idcok = win->_idcok; 224 nwin->_immed = win->_immed; 225 nwin->_sync = win->_sync; 226 nwin->_use_keypad = win->_use_keypad; 227 nwin->_delay = win->_delay; 228 229 nwin->_parx = 0; 230 nwin->_pary = 0; 231 nwin->_parent = (WINDOW *) 0; 232 /* See above: the clone isn't a subwindow! */ 233 234 nwin->_regtop = win->_regtop; 235 nwin->_regbottom = win->_regbottom; 236 237 if (win->_flags & _ISPAD) 238 nwin->_pad = win->_pad; 239 240 linesize = (win->_maxx + 1) * sizeof(NCURSES_CH_T); 241 for (i = 0; i <= nwin->_maxy; i++) { 242 memcpy(nwin->_line[i].text, win->_line[i].text, linesize); 243 nwin->_line[i].firstchar = win->_line[i].firstchar; 244 nwin->_line[i].lastchar = win->_line[i].lastchar; 245 } 246 } 247 _nc_unlock_global(curses); 248 } 249 returnWin(nwin); 250 } 251