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Annotation of GNUtools/emacs/src/xmenu.c, revision 1.1

1.1     ! root        1: /* X Communication module for terminals which understand the X protocol.
        !             2:    Copyright (C) 1986, 1988 Free Software Foundation, Inc.
        !             3: 
        !             4: This file is part of GNU Emacs.
        !             5: 
        !             6: GNU Emacs is free software; you can redistribute it and/or modify
        !             7: it under the terms of the GNU General Public License as published by
        !             8: the Free Software Foundation; either version 1, or (at your option)
        !             9: any later version.
        !            10: 
        !            11: GNU Emacs is distributed in the hope that it will be useful,
        !            12: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            14: GNU General Public License for more details.
        !            15: 
        !            16: You should have received a copy of the GNU General Public License
        !            17: along with GNU Emacs; see the file COPYING.  If not, write to
        !            18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
        !            19: 
        !            20:  * X pop-up deck-of-cards menu facility for gnuemacs.
        !            21:  *
        !            22:  * Written by Jon Arnold and Roman Budzianowski
        !            23:  * Mods and rewrite by Robert Krawitz
        !            24:  *
        !            25:  */
        !            26: 
        !            27: /* $Source: /u2/third_party/gnuemacs.chow/src/RCS/xmenu.c,v $
        !            28:  * $Author: rlk $
        !            29:  * $Locker:  $
        !            30:  * $Header: xmenu.c,v 1.6 86/08/26 17:23:26 rlk Exp $
        !            31:  *
        !            32:  */
        !            33: 
        !            34: #ifndef lint
        !            35: static char *rcsid_GXMenu_c = "$Header: xmenu.c,v 1.6 86/08/26 17:23:26 rlk Exp $";
        !            36: #endif lint
        !            37: 
        !            38: /* On 4.3 this loses if it comes after xterm.h.  */
        !            39: #include <signal.h>
        !            40: #include "config.h"
        !            41: 
        !            42: /* This may include sys/types.h, and that somehow loses
        !            43:    if this is not done before the other system files.  */
        !            44: #ifdef X11
        !            45: #include "x11term.h"
        !            46: /* #include <X11/X10.h> */
        !            47: #else
        !            48: #include "xterm.h"
        !            49: #endif
        !            50: 
        !            51: /* Prepare for lisp.h definition of NULL.
        !            52:    Sometimes x11term.h includes stddef.h.  */
        !            53: #ifdef NULL
        !            54: #undef NULL
        !            55: #endif
        !            56: 
        !            57: #include "lisp.h"
        !            58: #include "window.h"
        !            59: 
        !            60: /* Load sys/types.h if not already loaded.
        !            61:    In some systems loading it twice is suicidal.  */
        !            62: #ifndef makedev
        !            63: #include <sys/types.h>
        !            64: #endif
        !            65: 
        !            66: #include "dispextern.h"
        !            67: 
        !            68: #ifdef X11
        !            69: #include "../oldXMenu/XMenu.h"
        !            70: #define X11ONLY(arg) arg,
        !            71: #else
        !            72: #include <X/XMenu.h>
        !            73: #define X11ONLY(arg)
        !            74: #endif
        !            75: 
        !            76: #include "termopts.h"
        !            77: 
        !            78: #define min(x,y) (((x) < (y)) ? (x) : (y))
        !            79: #define max(x,y) (((x) > (y)) ? (x) : (y))
        !            80: 
        !            81: #define NUL 0
        !            82: 
        !            83: #ifndef TRUE
        !            84: #define TRUE 1
        !            85: #define FALSE 0
        !            86: #endif TRUE
        !            87: 
        !            88: #ifdef X11
        !            89: extern XFontStruct *fontinfo;
        !            90: extern Display *XXdisplay;
        !            91: extern Window  XXwindow;
        !            92: extern int     XXfontw;
        !            93: extern int     XXfonth;
        !            94: int    XXscreen;
        !            95: #else
        !            96: extern int XXxoffset,XXyoffset;
        !            97: extern FontInfo *fontinfo;
        !            98: #define        ButtonReleaseMask ButtonReleased
        !            99: #endif /* not X11 */
        !           100: 
        !           101: extern int (*handler)();
        !           102: 
        !           103: /*************************************************************/
        !           104: 
        !           105: /* Ignoring the args is easiest.  */
        !           106: XMenuQuit ()
        !           107: {
        !           108:   error("Unknown XMenu error");
        !           109: }
        !           110: 
        !           111: DEFUN ("x-popup-menu",Fx_popup_menu, Sx_popup_menu, 1, 2, 0,
        !           112:        "Interface to XMenu library; permits creation and use of\n\
        !           113: deck-of-cards pop-up menus.\n\
        !           114: \n\
        !           115: ARG is a position specification; it is a list of (Xoffset, Yoffset)\n\
        !           116: from the top-left corner of the editor window.  Note that this offset\n\
        !           117: is relative to the center of the first line in the first pane of the\n\
        !           118: menu, not the top left of the menu as a whole.\n\
        !           119: \n\
        !           120: MENU is a specifier for a menu.  It is a list of the form\n\
        !           121: (title pane1 pane2...), and each pane is a list of form\n\
        !           122: (title (line item)...).  Each line should be a string, and item should\n\
        !           123: be the return value for that line (i. e. if it is selected.")
        !           124:        (arg,menu)
        !           125:      Lisp_Object arg,menu;
        !           126: {
        !           127:   int number_of_panes;
        !           128:   Lisp_Object XMenu_return;
        !           129:   int XMenu_xpos,XMenu_ypos;
        !           130:   char **menus;
        !           131:   char ***names;
        !           132:   Lisp_Object **obj_list;
        !           133:   int *items;
        !           134:   char *title;
        !           135:   char *error_name;
        !           136:   Lisp_Object ltitle, selection;
        !           137:   Lisp_Object XEmacsMenu();
        !           138:   int i, j;
        !           139: #ifdef X11
        !           140:   Window root_window, wjunk;
        !           141:   int ijunk;
        !           142:   extern Lisp_Object Vx_mouse_abs_pos;
        !           143: #endif
        !           144:   BLOCK_INPUT_DECLARE ();
        !           145: 
        !           146:   check_xterm();
        !           147: #ifdef X11
        !           148: #if 0
        !           149:   if (interrupt_input)
        !           150:     unrequest_sigio ();
        !           151: #endif
        !           152:   BLOCK_INPUT ();
        !           153:   root_window = RootWindow (XXdisplay, DefaultScreen(XXdisplay));
        !           154:   UNBLOCK_INPUT ();
        !           155:   XMenu_xpos = Fcar (Vx_mouse_abs_pos);
        !           156:   XMenu_ypos = Fcar (Fcdr (Vx_mouse_abs_pos));
        !           157: #if 0
        !           158:   if (interrupt_input)
        !           159:     request_sigio ();
        !           160: #endif
        !           161: #else
        !           162:   XMenu_xpos = fontinfo->width * XINT(Fcar(arg));
        !           163:   XMenu_ypos = fontinfo->height * XINT(Fcar(Fcdr (arg)));
        !           164:   XMenu_xpos += XXxoffset;
        !           165:   XMenu_ypos += XXyoffset;
        !           166: #endif
        !           167:   ltitle = Fcar(menu);
        !           168:   CHECK_STRING(ltitle,1);
        !           169:   title = (char *) XSTRING(ltitle)->data;
        !           170:   number_of_panes=list_of_panes(&obj_list, &menus, &names, &items, Fcdr(menu));
        !           171: #ifdef XDEBUG
        !           172:   fprintf(stderr,"Panes= %d\n", number_of_panes);
        !           173:   for(i=0; i < number_of_panes; i++)
        !           174:     {
        !           175:       fprintf (stderr,"Pane %d lines %d title %s\n", i, items[i], menus[i]);
        !           176:       for (j=0; j < items[i]; j++)
        !           177:        {
        !           178:          fprintf (stderr,"    Item %d %s\n", j, names[i][j]);
        !           179:        }
        !           180:     }
        !           181: #endif
        !           182:   BLOCK_INPUT ();
        !           183: #ifdef X11
        !           184:   XSetErrorHandler(XMenuQuit);
        !           185:   selection = XEmacsMenu(root_window, XMenu_xpos, XMenu_ypos, names, menus,
        !           186:                         items, number_of_panes, obj_list ,title, &error_name);
        !           187:   XSetErrorHandler(handler);
        !           188: #else
        !           189:   XErrorHandler(XMenuQuit);
        !           190:   selection = XEmacsMenu(RootWindow, XMenu_xpos, XMenu_ypos, names, menus,
        !           191:                         items, number_of_panes, obj_list ,title, &error_name);
        !           192:   XErrorHandler(handler);
        !           193: #endif
        !           194:   UNBLOCK_INPUT ();
        !           195:   force_input_read ();
        !           196:   /** fprintf(stderr,"selection = %x\n",selection);  **/
        !           197:   if (selection != NUL)
        !           198:     {                          /* selected something */
        !           199:       XMenu_return = selection;
        !           200:     }
        !           201:   else
        !           202:     {                          /* nothing selected */
        !           203:       XMenu_return = Qnil;
        !           204:     }
        !           205:   /* now free up the strings */
        !           206:   for (i=0; i < number_of_panes; i++)
        !           207:     {
        !           208:       free(names[i]);
        !           209:       free(obj_list[i]);
        !           210:     }
        !           211:   free(menus);
        !           212:   free(obj_list);
        !           213:   free(names);
        !           214:   free(items);
        !           215:   /*   free(title); */
        !           216:   if (error_name) error(error_name);
        !           217:   return XMenu_return;
        !           218: }
        !           219: 
        !           220: struct indices {
        !           221:   int pane;
        !           222:   int line;
        !           223: };
        !           224: 
        !           225: Lisp_Object
        !           226: XEmacsMenu(parent, startx, starty, line_list, pane_list, line_cnt,
        !           227:           pane_cnt, item_list, title, error)
        !           228:      Window parent;            
        !           229:      int startx, starty;       /* upper left corner position BROKEN */
        !           230:      char **line_list[];       /* list of strings for items */
        !           231:      char *pane_list[];                /* list of pane titles */
        !           232:      char *title;
        !           233:      int pane_cnt;             /* total number of panes */
        !           234:      Lisp_Object *item_list[]; /* All items */
        !           235:      int line_cnt[];           /* Lines in each pane */
        !           236:      char **error;             /* Error returned */
        !           237: {
        !           238:   XMenu *GXMenu;
        !           239:   int last, panes, selidx, lpane, status;
        !           240:   int lines, sofar;
        !           241:   Lisp_Object entry;
        !           242:   /* struct indices *datap, *datap_save; */
        !           243:   char *datap;
        !           244:   int ulx = 0, uly = 0, width, height;
        !           245:   int dispwidth, dispheight;
        !           246:   
        !           247:   *error = (char *) 0;         /* Initialize error pointer to null */
        !           248:   if ((GXMenu = XMenuCreate( X11ONLY (XXdisplay) parent, "emacs" )) == NUL )
        !           249:     {
        !           250:       *error = "Can't create menu";
        !           251:       /* error("Can't create menu"); */
        !           252:       return(0);
        !           253:     }
        !           254:   
        !           255:   for (panes=0, lines=0; panes < pane_cnt; lines += line_cnt[panes], panes++ )
        !           256:     ;
        !           257:   /* datap = (struct indices *) xmalloc (lines * sizeof(struct indices)); */
        !           258:   /*datap = (char *) xmalloc(lines * sizeof(char));
        !           259:     datap_save = datap;*/
        !           260:   
        !           261:   for (panes = 0, sofar=0;panes < pane_cnt;sofar +=line_cnt[panes], panes++ )
        !           262:     {
        !           263:       /* create all the necessary panes */
        !           264:       if ((lpane= XMenuAddPane( X11ONLY (XXdisplay) GXMenu, pane_list[panes] , TRUE ))
        !           265:          == XM_FAILURE)
        !           266:        {
        !           267:          XMenuDestroy(X11ONLY (XXdisplay) GXMenu);
        !           268:          *error = "Can't create pane";
        !           269:          /* error("Can't create pane"); */
        !           270:          /* free(datap); */
        !           271:          return(0);
        !           272:        }
        !           273:       for ( selidx = 0; selidx < line_cnt[panes] ; selidx++ )
        !           274:        {
        !           275:          /* add the selection stuff to the menus */
        !           276:          /* datap[selidx+sofar].pane = panes;
        !           277:             datap[selidx+sofar].line = selidx; */
        !           278:          if (XMenuAddSelection(X11ONLY (XXdisplay) GXMenu, lpane, 0, line_list[panes][selidx], TRUE)
        !           279:              == XM_FAILURE)
        !           280:            {
        !           281:              XMenuDestroy(X11ONLY (XXdisplay) GXMenu);
        !           282:              /* free(datap); */
        !           283:              *error = "Can't add selection to menu";
        !           284:              /* error ("Can't add selection to menu"); */
        !           285:              return(0);
        !           286:            }
        !           287:        }
        !           288:     }
        !           289:   /* all set and ready to fly */
        !           290:   XMenuRecompute(X11ONLY (XXdisplay) GXMenu);
        !           291: #ifdef X11
        !           292:   XXscreen = DefaultScreen(XXdisplay);
        !           293:   dispwidth = DisplayWidth(XXdisplay, XXscreen);
        !           294:   dispheight = DisplayHeight(XXdisplay, XXscreen);
        !           295: #else
        !           296:   dispwidth = DisplayWidth();
        !           297:   dispheight = DisplayHeight();
        !           298: #endif
        !           299:   startx = min(startx, dispwidth);
        !           300:   starty = min(starty, dispheight);
        !           301:   startx = max(startx, 1);
        !           302:   starty = max(starty, 1);
        !           303:   XMenuLocate(X11ONLY (XXdisplay) GXMenu, 0, 0, startx, starty, &ulx, &uly, &width, &height);
        !           304:   if (ulx+width > dispwidth)
        !           305:     {
        !           306:       startx -= (ulx + width) - dispwidth;
        !           307:       ulx = dispwidth - width;
        !           308:     }
        !           309:   if (uly+height > dispheight)
        !           310:     {
        !           311:       starty -= (uly + height) - dispheight;
        !           312:       uly = dispheight - height;
        !           313:     }
        !           314:   if (ulx < 0) startx -= ulx;
        !           315:   if (uly < 0) starty -= uly;
        !           316:     
        !           317:   XMenuSetFreeze(GXMenu, TRUE);
        !           318:   panes = selidx = 0;
        !           319:   
        !           320:   status = XMenuActivate(X11ONLY (XXdisplay) GXMenu, &panes, &selidx,
        !           321:                         startx, starty, ButtonReleaseMask, &datap);
        !           322:   switch (status ) {
        !           323:   case XM_SUCCESS:
        !           324: #ifdef XDEBUG
        !           325:     fprintf (stderr, "pane= %d line = %d\n", panes, selidx);
        !           326: #endif
        !           327:     entry = item_list[panes][selidx];
        !           328:     break;
        !           329:   case XM_FAILURE:
        !           330:     /*free (datap_save); */
        !           331:     XMenuDestroy(X11ONLY (XXdisplay) GXMenu);
        !           332:     *error = "Can't activate menu";
        !           333:     /* error("Can't activate menu"); */
        !           334:   case XM_IA_SELECT:
        !           335:   case XM_NO_SELECT:
        !           336:     entry = Qnil;
        !           337:     break;
        !           338:   }
        !           339:   XMenuDestroy(X11ONLY (XXdisplay) GXMenu);
        !           340:   /*free(datap_save);*/
        !           341:   return(entry);
        !           342: }
        !           343: 
        !           344: syms_of_xmenu ()
        !           345: {
        !           346:   defsubr (&Sx_popup_menu);
        !           347: }
        !           348: 
        !           349: list_of_panes (vector, panes, names, items, menu)
        !           350:      Lisp_Object ***vector;    /* RETURN all menu objects */
        !           351:      char ***panes;            /* RETURN pane names */
        !           352:      char ****names;           /* RETURN all line names */
        !           353:      int **items;              /* RETURN number of items per pane */
        !           354:      Lisp_Object menu;
        !           355: {
        !           356:   Lisp_Object tail, item, item1;
        !           357:   int i;
        !           358:   
        !           359:   if (XTYPE (menu) != Lisp_Cons) menu = wrong_type_argument(Qlistp, menu);
        !           360:   
        !           361:   i= XFASTINT(Flength(menu,1));
        !           362: 
        !           363:   *vector = (Lisp_Object **) xmalloc(i * sizeof (Lisp_Object *));
        !           364:   *panes = (char **) xmalloc(i * sizeof (char *));
        !           365:   *items = (int *) xmalloc(i * sizeof (int));
        !           366:   *names = (char ***) xmalloc(i * sizeof (char **));
        !           367: 
        !           368:   for (i=0,tail = menu; !NULL (tail); tail = Fcdr (tail), i++)
        !           369:     {
        !           370:        item = Fcdr(Fcar(tail));
        !           371:        if (XTYPE (item) != Lisp_Cons) (void) wrong_type_argument(Qlistp, item);
        !           372: #ifdef XDEBUG
        !           373:        fprintf (stderr, "list_of_panes check tail, i=%d\n", i);
        !           374: #endif
        !           375:        item1 = Fcar(Fcar(tail));
        !           376:        CHECK_STRING (item1, 1);
        !           377: #ifdef XDEBUG
        !           378:        fprintf (stderr, "list_of_panes check pane, i=%d%s\n", i,
        !           379:                XSTRING(item1)->data);
        !           380: #endif
        !           381:        (*panes)[i] = (char *) XSTRING(item1)->data;
        !           382:        (*items)[i] = list_of_items ((*vector)+i, (*names)+i, item);
        !           383:        /* (*panes)[i] = (char *) xmalloc((XSTRING(item1)->size)+1);
        !           384:          bcopy (XSTRING (item1)->data, (*panes)[i], XSTRING(item1)->size + 1)
        !           385:          ; */
        !           386:     }
        !           387:   return i;
        !           388: }
        !           389:      
        !           390: 
        !           391: list_of_items (vector,names,pane)  /* get list from emacs and put to vector */
        !           392:      Lisp_Object **vector;     /* RETURN menu "objects" */
        !           393:      char ***names;            /* RETURN line names */
        !           394:      Lisp_Object pane;
        !           395: {
        !           396:   Lisp_Object tail, item, item1;
        !           397:   int i;
        !           398: 
        !           399:   if (XTYPE (pane) != Lisp_Cons) pane = wrong_type_argument(Qlistp, pane);
        !           400:   
        !           401:   i= XFASTINT(Flength(pane,1));
        !           402: 
        !           403:   *vector = (Lisp_Object *) xmalloc(i * sizeof (Lisp_Object));
        !           404:   *names = (char **) xmalloc(i * sizeof (char *));
        !           405: 
        !           406:   for (i=0,tail = pane; !NULL (tail); tail = Fcdr (tail), i++)
        !           407:     {
        !           408:        item = Fcar(tail);
        !           409:        if (XTYPE (item) != Lisp_Cons) (void) wrong_type_argument(Qlistp, item);
        !           410: #ifdef XDEBUG
        !           411:        fprintf (stderr, "list_of_items check tail, i=%d\n", i);
        !           412: #endif
        !           413:        (*vector)[i] =  Fcdr (item);
        !           414:        item1 = Fcar(item);
        !           415:        CHECK_STRING (item1, 1);
        !           416: #ifdef XDEBUG
        !           417:        fprintf (stderr, "list_of_items check item, i=%d%s\n", i,
        !           418:                XSTRING(item1)->data);
        !           419: #endif
        !           420:        (*names)[i] = (char *) XSTRING(item1)->data;
        !           421:        /* (*names)[i] = (char *) xmalloc((XSTRING(item1)->size)+1);
        !           422:        bcopy (XSTRING (item1)->data, (*names)[i], XSTRING(item1)->size + 1); */
        !           423:     }
        !           424:   return i;
        !           425: }
        !           426: 

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