src/appmenu.c

   1 /* appmenu.c- application defined menu
   2  *
   3  *  Window Maker window manager
   4  *
   5  *  Copyright (c) 1997-2003 Alfredo K. Kojima
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License along
  18  *  with this program; if not, write to the Free Software Foundation, Inc.,
  19  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include "wconfig.h"
  23
  24 #include <X11/Xlib.h>
  25 #include <X11/Xutil.h>
  26 #include <X11/Xproto.h>
  27 #include <X11/Xatom.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <stdio.h>
  31 #include <unistd.h>
  32
  33 #include "WindowMaker.h"
  34 #include "menu.h"
  35 #include "actions.h"
  36 #include "appmenu.h"
  37 #include "framewin.h"
  38
  39 /******** Global Variables **********/
  40 extern Atom _XA_WINDOWMAKER_MENU;
  41 extern Time LastTimestamp;
  42 extern WPreferences wPreferences;
  43
  44 typedef struct {
  45         short code;
  46         short tag;
  47         Window window;
  48 } WAppMenuData;
  49
  50 enum {
  51         wmBeginMenu = 1,
  52         wmEndMenu = 2,
  53         wmNormalItem = 10,
  54         wmDoubleItem = 11,
  55         wmSubmenuItem = 12
  56 };
  57
  58 enum {
  59         wmSelectItem = 1
  60 };
  61
  62 static void sendMessage(Window window, int what, int tag)
  63 {
  64         XEvent event;
  65
  66         event.xclient.type = ClientMessage;
  67         event.xclient.message_type = _XA_WINDOWMAKER_MENU;
  68         event.xclient.format = 32;
  69         event.xclient.display = dpy;
  70         event.xclient.window = window;
  71         event.xclient.data.l[0] = LastTimestamp;
  72         event.xclient.data.l[1] = what;
  73         event.xclient.data.l[2] = tag;
  74         event.xclient.data.l[3] = 0;
  75         XSendEvent(dpy, window, False, NoEventMask, &event);
  76         XFlush(dpy);
  77 }
  78
  79 static void notifyClient(WMenu * menu, WMenuEntry * entry)
  80 {
  81         WAppMenuData *data = entry->clientdata;
  82
  83         sendMessage(data->window, wmSelectItem, data->tag);
  84 }
  85
  86 static WMenu *parseMenuCommand(WScreen * scr, Window win, char **slist, int count, int *index)
  87 {
  88         WMenu *menu;
  89         int command;
  90         int code, pos;
  91         char title[300];
  92         char rtext[300];
  93
  94         if (strlen(slist[*index]) > sizeof(title) - 1) {
  95                 wwarning("appmenu: menu command size exceeded in window %lx", win);
  96                 return NULL;
  97         }
  98         if (sscanf(slist[*index], "%i %i %n", &command, &code, &pos) < 2 || command != wmBeginMenu) {
  99                 wwarning("appmenu: bad menu entry \"%s\" in window %lx", slist[*index], win);
 100                 return NULL;
 101         }
 102         strcpy(title, &slist[*index][pos]);
 103         menu = wMenuCreateForApp(scr, title, *index == 1);
 104         if (!menu)
 105                 return NULL;
 106         *index += 1;
 107         while (*index < count) {
 108                 int ecode, etag, enab;
 109
 110                 if (sscanf(slist[*index], "%i", &command) != 1) {
 111                         wMenuDestroy(menu, True);
 112                         wwarning("appmenu: bad menu entry \"%s\" in window %lx", slist[*index], win);
 113                         return NULL;
 114                 }
 115
 116                 if (command == wmEndMenu) {
 117                         *index += 1;
 118                         break;
 119
 120                 } else if (command == wmNormalItem || command == wmDoubleItem) {
 121                         WAppMenuData *data;
 122                         WMenuEntry *entry;
 123
 124                         if (command == wmNormalItem) {
 125                                 if (sscanf(slist[*index], "%i %i %i %i %n",
 126                                            &command, &ecode, &etag, &enab, &pos) != 4 || ecode != code) {
 127                                         wMenuDestroy(menu, True);
 128                                         wwarning("appmenu: bad menu entry \"%s\" in window %lx",
 129                                                  slist[*index], win);
 130                                         return NULL;
 131                                 }
 132                                 strcpy(title, &slist[*index][pos]);
 133                                 rtext[0] = 0;
 134                         } else {
 135                                 if (sscanf(slist[*index], "%i %i %i %i %s %n",
 136                                            &command, &ecode, &etag, &enab, rtext, &pos) != 5 || ecode != code) {
 137                                         wMenuDestroy(menu, True);
 138                                         wwarning("appmenu: bad menu entry \"%s\" in window %lx",
 139                                                  slist[*index], win);
 140                                         return NULL;
 141                                 }
 142                                 strcpy(title, &slist[*index][pos]);
 143                         }
 144                         if (!(data = malloc(sizeof(WAppMenuData)))) {
 145                                 wwarning("appmenu: out of memory making menu for window %lx", win);
 146                                 wMenuDestroy(menu, True);
 147                                 return NULL;
 148                         }
 149                         data->code = code;
 150                         data->tag = etag;
 151                         data->window = win;
 152                         entry = wMenuAddCallback(menu, title, notifyClient, data);
 153                         if (!entry) {
 154                                 wMenuDestroy(menu, True);
 155                                 wwarning("appmenu: out of memory creating menu for window %lx", win);
 156                                 free(data);
 157                                 return NULL;
 158                         }
 159                         if (rtext[0] != 0)
 160                                 entry->rtext = wstrdup(rtext);
 161                         else
 162                                 entry->rtext = NULL;
 163                         entry->free_cdata = free;
 164                         *index += 1;
 165
 166                 } else if (command == wmSubmenuItem) {
 167                         int ncode;
 168                         WMenuEntry *entry;
 169                         WMenu *submenu;
 170
 171                         if (sscanf(slist[*index], "%i %i %i %i %i %n",
 172                                    &command, &ecode, &etag, &enab, &ncode, &pos) != 5 || ecode != code) {
 173                                 wMenuDestroy(menu, True);
 174                                 wwarning("appmenu: bad menu entry \"%s\" in window %lx", slist[*index], win);
 175
 176                                 return NULL;
 177                         }
 178                         strcpy(title, &slist[*index][pos]);
 179                         *index += 1;
 180
 181                         submenu = parseMenuCommand(scr, win, slist, count, index);
 182
 183                         entry = wMenuAddCallback(menu, title, NULL, NULL);
 184
 185                         if (!entry) {
 186                                 wMenuDestroy(menu, True);
 187                                 wMenuDestroy(submenu, True);
 188                                 wwarning("appmenu: out of memory creating menu for window %lx", win);
 189                                 return NULL;
 190                         }
 191
 192                         wMenuEntrySetCascade(menu, entry, submenu);
 193
 194                 } else {
 195                         wMenuDestroy(menu, True);
 196                         wwarning("appmenu: bad menu entry \"%s\" in window %lx", slist[*index], win);
 197                         return NULL;
 198                 }
 199         }
 200
 201         return menu;
 202 }
 203
 204 WMenu *wAppMenuGet(WScreen * scr, Window window)
 205 {
 206         XTextProperty text_prop;
 207         int count, i;
 208         char **slist;
 209         WMenu *menu;
 210
 211         if (!XGetTextProperty(dpy, window, &text_prop, _XA_WINDOWMAKER_MENU)) {
 212                 return NULL;
 213         }
 214         if (!XTextPropertyToStringList(&text_prop, &slist, &count) || count < 1) {
 215                 XFree(text_prop.value);
 216                 return NULL;
 217         }
 218         XFree(text_prop.value);
 219         if (strcmp(slist[0], "WMMenu 0") != 0) {
 220                 wwarning("appmenu: unknown version of WMMenu in window %lx: %s", window, slist[0]);
 221                 XFreeStringList(slist);
 222                 return NULL;
 223         }
 224
 225         i = 1;
 226         menu = parseMenuCommand(scr, window, slist, count, &i);
 227         if (menu)
 228                 menu->parent = NULL;
 229
 230         XFreeStringList(slist);
 231
 232         return menu;
 233 }
 234
 235 void wAppMenuDestroy(WMenu * menu)
 236 {
 237         if (menu)
 238                 wMenuDestroy(menu, True);
 239 }
 240
 241 static void mapmenus(WMenu * menu)
 242 {
 243         int i;
 244
 245         if (menu->flags.mapped)
 246                 XMapWindow(dpy, menu->frame->core->window);
 247         if (menu->brother->flags.mapped)
 248                 XMapWindow(dpy, menu->brother->frame->core->window);
 249         for (i = 0; i < menu->cascade_no; i++) {
 250                 if (menu->cascades[i])
 251                         mapmenus(menu->cascades[i]);
 252         }
 253 }
 254
 255 void wAppMenuMap(WMenu * menu, WWindow * wwin)
 256 {
 257
 258         if (!menu)
 259                 return;
 260
 261         if (!menu->flags.mapped) {
 262                 wMenuMap(menu);
 263         }
 264         if (wwin && (wPreferences.focus_mode != WKF_CLICK)) {
 265                 int x, min;
 266
 267                 min = 20;       /* Keep at least 20 pixels visible */
 268                 if (wwin->frame_x > min) {
 269                         x = wwin->frame_x - menu->frame->core->width;
 270                 } else {
 271                         x = min - menu->frame->core->width;
 272                 }
 273                 wMenuMove(menu, x, wwin->frame_y, True);
 274         }
 275         mapmenus(menu);
 276
 277 }
 278
 279 static void unmapmenus(WMenu * menu)
 280 {
 281         int i;
 282
 283         if (menu->flags.mapped)
 284                 XUnmapWindow(dpy, menu->frame->core->window);
 285         if (menu->brother->flags.mapped)
 286                 XUnmapWindow(dpy, menu->brother->frame->core->window);
 287         for (i = 0; i < menu->cascade_no; i++) {
 288                 if (menu->cascades[i])
 289                         unmapmenus(menu->cascades[i]);
 290         }
 291 }
 292
 293 void wAppMenuUnmap(WMenu * menu)
 294 {
 295         if (menu)
 296                 unmapmenus(menu);
 297 }