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
  43 typedef struct {
  44         short code;
  45         short tag;
  46         Window window;
  47 } WAppMenuData;
  48
  49 enum {
  50         wmBeginMenu = 1,
  51         wmEndMenu = 2,
  52         wmNormalItem = 10,
  53         wmDoubleItem = 11,
  54         wmSubmenuItem = 12
  55 };
  56
  57 enum {
  58         wmSelectItem = 1
  59 };
  60
  61 static void sendMessage(Window window, int what, int tag)
  62 {
  63         XEvent event;
  64
  65         event.xclient.type = ClientMessage;
  66         event.xclient.message_type = _XA_WINDOWMAKER_MENU;
  67         event.xclient.format = 32;
  68         event.xclient.display = dpy;
  69         event.xclient.window = window;
  70         event.xclient.data.l[0] = LastTimestamp;
  71         event.xclient.data.l[1] = what;
  72         event.xclient.data.l[2] = tag;
  73         event.xclient.data.l[3] = 0;
  74         XSendEvent(dpy, window, False, NoEventMask, &event);
  75         XFlush(dpy);
  76 }
  77
  78 static void notifyClient(WMenu * menu, WMenuEntry * entry)
  79 {
  80         WAppMenuData *data = entry->clientdata;
  81
  82         sendMessage(data->window, wmSelectItem, data->tag);
  83 }
  84
  85 static WMenu *parseMenuCommand(WScreen * scr, Window win, char **slist, int count, int *index)
  86 {
  87         WMenu *menu;
  88         int command;
  89         int code, pos;
  90         char title[300];
  91         char rtext[300];
  92
  93         if (strlen(slist[*index]) > sizeof(title) - 1) {
  94                 wwarning("appmenu: menu command size exceeded in window %lx", win);
  95                 return NULL;
  96         }
  97         if (sscanf(slist[*index], "%i %i %n", &command, &code, &pos) < 2 || command != wmBeginMenu) {
  98                 wwarning("appmenu: bad menu entry \"%s\" in window %lx", slist[*index], win);
  99                 return NULL;
 100         }
 101         strcpy(title, &slist[*index][pos]);
 102         menu = wMenuCreateForApp(scr, title, *index == 1);
 103         if (!menu)
 104                 return NULL;
 105         *index += 1;
 106         while (*index < count) {
 107                 int ecode, etag, enab;
 108
 109                 if (sscanf(slist[*index], "%i", &command) != 1) {
 110                         wMenuDestroy(menu, True);
 111                         wwarning("appmenu: bad menu entry \"%s\" in window %lx", slist[*index], win);
 112                         return NULL;
 113                 }
 114
 115                 if (command == wmEndMenu) {
 116                         *index += 1;
 117                         break;
 118
 119                 } else if (command == wmNormalItem || command == wmDoubleItem) {
 120                         WAppMenuData *data;
 121                         WMenuEntry *entry;
 122
 123                         if (command == wmNormalItem) {
 124                                 if (sscanf(slist[*index], "%i %i %i %i %n",
 125                                            &command, &ecode, &etag, &enab, &pos) != 4 || ecode != code) {
 126                                         wMenuDestroy(menu, True);
 127                                         wwarning("appmenu: bad menu entry \"%s\" in window %lx",
 128                                                  slist[*index], win);
 129                                         return NULL;
 130                                 }
 131                                 strcpy(title, &slist[*index][pos]);
 132                                 rtext[0] = 0;
 133                         } else {
 134                                 if (sscanf(slist[*index], "%i %i %i %i %s %n",
 135                                            &command, &ecode, &etag, &enab, rtext, &pos) != 5 || ecode != code) {
 136                                         wMenuDestroy(menu, True);
 137                                         wwarning("appmenu: bad menu entry \"%s\" in window %lx",
 138                                                  slist[*index], win);
 139                                         return NULL;
 140                                 }
 141                                 strcpy(title, &slist[*index][pos]);
 142                         }
 143                         if (!(data = malloc(sizeof(WAppMenuData)))) {
 144                                 wwarning("appmenu: out of memory making menu for window %lx", win);
 145                                 wMenuDestroy(menu, True);
 146                                 return NULL;
 147                         }
 148                         data->code = code;
 149                         data->tag = etag;
 150                         data->window = win;
 151                         entry = wMenuAddCallback(menu, title, notifyClient, data);
 152                         if (!entry) {
 153                                 wMenuDestroy(menu, True);
 154                                 wwarning("appmenu: out of memory creating menu for window %lx", win);
 155                                 free(data);
 156                                 return NULL;
 157                         }
 158                         if (rtext[0] != 0)
 159                                 entry->rtext = wstrdup(rtext);
 160                         else
 161                                 entry->rtext = NULL;
 162                         entry->free_cdata = free;
 163                         *index += 1;
 164
 165                 } else if (command == wmSubmenuItem) {
 166                         int ncode;
 167                         WMenuEntry *entry;
 168                         WMenu *submenu;
 169
 170                         if (sscanf(slist[*index], "%i %i %i %i %i %n",
 171                                    &command, &ecode, &etag, &enab, &ncode, &pos) != 5 || ecode != code) {
 172                                 wMenuDestroy(menu, True);
 173                                 wwarning("appmenu: bad menu entry \"%s\" in window %lx", slist[*index], win);
 174
 175                                 return NULL;
 176                         }
 177                         strcpy(title, &slist[*index][pos]);
 178                         *index += 1;
 179
 180                         submenu = parseMenuCommand(scr, win, slist, count, index);
 181
 182                         entry = wMenuAddCallback(menu, title, NULL, NULL);
 183
 184                         if (!entry) {
 185                                 wMenuDestroy(menu, True);
 186                                 wMenuDestroy(submenu, True);
 187                                 wwarning("appmenu: out of memory creating menu for window %lx", win);
 188                                 return NULL;
 189                         }
 190
 191                         wMenuEntrySetCascade(menu, entry, submenu);
 192
 193                 } else {
 194                         wMenuDestroy(menu, True);
 195                         wwarning("appmenu: bad menu entry \"%s\" in window %lx", slist[*index], win);
 196                         return NULL;
 197                 }
 198         }
 199
 200         return menu;
 201 }
 202
 203 WMenu *wAppMenuGet(WScreen * scr, Window window)
 204 {
 205         XTextProperty text_prop;
 206         int count, i;
 207         char **slist;
 208         WMenu *menu;
 209
 210         if (!XGetTextProperty(dpy, window, &text_prop, _XA_WINDOWMAKER_MENU)) {
 211                 return NULL;
 212         }
 213         if (!XTextPropertyToStringList(&text_prop, &slist, &count) || count < 1) {
 214                 XFree(text_prop.value);
 215                 return NULL;
 216         }
 217         XFree(text_prop.value);
 218         if (strcmp(slist[0], "WMMenu 0") != 0) {
 219                 wwarning("appmenu: unknown version of WMMenu in window %lx: %s", window, slist[0]);
 220                 XFreeStringList(slist);
 221                 return NULL;
 222         }
 223
 224         i = 1;
 225         menu = parseMenuCommand(scr, window, slist, count, &i);
 226         if (menu)
 227                 menu->parent = NULL;
 228
 229         XFreeStringList(slist);
 230
 231         return menu;
 232 }
 233
 234 void wAppMenuDestroy(WMenu * menu)
 235 {
 236         if (menu)
 237                 wMenuDestroy(menu, True);
 238 }
 239
 240 static void mapmenus(WMenu * menu)
 241 {
 242         int i;
 243
 244         if (menu->flags.mapped)
 245                 XMapWindow(dpy, menu->frame->core->window);
 246         if (menu->brother->flags.mapped)
 247                 XMapWindow(dpy, menu->brother->frame->core->window);
 248         for (i = 0; i < menu->cascade_no; i++) {
 249                 if (menu->cascades[i])
 250                         mapmenus(menu->cascades[i]);
 251         }
 252 }
 253
 254 void wAppMenuMap(WMenu * menu, WWindow * wwin)
 255 {
 256
 257         if (!menu)
 258                 return;
 259
 260         if (!menu->flags.mapped) {
 261                 wMenuMap(menu);
 262         }
 263         if (wwin && (wPreferences.focus_mode != WKF_CLICK)) {
 264                 int x, min;
 265
 266                 min = 20;       /* Keep at least 20 pixels visible */
 267                 if (wwin->frame_x > min) {
 268                         x = wwin->frame_x - menu->frame->core->width;
 269                 } else {
 270                         x = min - menu->frame->core->width;
 271                 }
 272                 wMenuMove(menu, x, wwin->frame_y, True);
 273         }
 274         mapmenus(menu);
 275
 276 }
 277
 278 static void unmapmenus(WMenu * menu)
 279 {
 280         int i;
 281
 282         if (menu->flags.mapped)
 283                 XUnmapWindow(dpy, menu->frame->core->window);
 284         if (menu->brother->flags.mapped)
 285                 XUnmapWindow(dpy, menu->brother->frame->core->window);
 286         for (i = 0; i < menu->cascade_no; i++) {
 287                 if (menu->cascades[i])
 288                         unmapmenus(menu->cascades[i]);
 289         }
 290 }
 291
 292 void wAppMenuUnmap(WMenu * menu)
 293 {
 294         if (menu)
 295                 unmapmenus(menu);
 296 }