Mercurial > hg > xemacs-beta
annotate lwlib/lwlib.c @ 4758:75975fd0b7fc
Implement more of the fontconfig API.
Improve implementation, avoiding nonsyntactic macros and compiler warnings.
Clean up some documentation.
Guard against freeing NULL pointers returned from fonconfig.
| author | Stephen J. Turnbull <stephen@xemacs.org> |
|---|---|
| date | Wed, 18 Nov 2009 22:44:28 +0900 |
| parents | 726060ee587c |
| children | aa5ed11f473b |
| rev | line source |
|---|---|
| 428 | 1 /* A general interface to the widgets of different toolkits. |
| 2 Copyright (C) 1992, 1993, 1994 Lucid, Inc. | |
| 3 Copyright (C) 1995 Tinker Systems and INS Engineering Corp. | |
| 4 | |
| 5 This file is part of the Lucid Widget Library. | |
| 6 | |
| 7 The Lucid Widget Library is free software; you can redistribute it and/or | |
| 8 modify it under the terms of the GNU General Public License as published by | |
| 9 the Free Software Foundation; either version 2, or (at your option) | |
| 10 any later version. | |
| 11 | |
| 12 The Lucid Widget Library 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 | |
| 18 along with XEmacs; see the file COPYING. If not, write to | |
| 19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 20 Boston, MA 02111-1307, USA. */ | |
| 21 | |
| 22 #ifdef NeXT | |
| 23 #undef __STRICT_BSD__ /* ick */ | |
| 24 #endif | |
| 25 | |
| 26 #include <config.h> | |
| 27 #include <stdio.h> | |
| 28 #include <stdlib.h> | |
| 29 #include <string.h> | |
| 30 #include <sys/types.h> | |
| 31 #ifdef HAVE_UNISTD_H | |
| 32 #include <unistd.h> | |
| 33 #endif | |
| 34 #include <X11/StringDefs.h> | |
| 35 #include "lwlib-internal.h" | |
| 36 #include "lwlib-utils.h" | |
| 37 | |
| 38 #ifdef NEED_LUCID | |
| 39 #include "lwlib-Xlw.h" | |
| 40 #endif | |
| 41 #ifdef NEED_MOTIF | |
| 42 #include "lwlib-Xm.h" | |
| 434 | 43 #ifdef LWLIB_WIDGETS_MOTIF |
| 44 #include <Xm/Xm.h> | |
| 45 #endif | |
| 428 | 46 #endif |
| 47 #ifdef NEED_ATHENA | |
| 48 #include "lwlib-Xaw.h" | |
| 49 #endif | |
| 50 | |
| 51 /* #### Does a check need to be put back in here to make sure we have | |
| 52 sufficient defines to function properly or are the checks in the | |
| 53 makefile sufficient? */ | |
| 54 | |
| 55 /* List of all widgets managed by the library. Note that each "widget" | |
| 56 listed here may actually be a tree of widgets; for example, a | |
| 57 single entry here might represent a single menubar or popup menu, | |
| 58 each of which might be implemented with a tree of widgets. | |
| 59 */ | |
| 60 static widget_info *all_widget_info = NULL; | |
| 61 | |
| 62 /* boolean flag indicating that the menubar is active */ | |
| 63 int lw_menu_active = 0; | |
| 64 | |
| 65 /* X11 menubar widget */ | |
| 66 Widget lw_menubar_widget = NULL; | |
| 67 | |
| 68 /* whether the last menu operation was a keyboard accelerator */ | |
| 69 int lw_menu_accelerate = False; | |
| 70 | |
| 71 | |
| 72 /* Forward declarations */ | |
| 434 | 73 static void instantiate_widget_instance (widget_instance *instance); |
| 74 static void free_widget_value_args (widget_value* wv); | |
| 428 | 75 |
| 76 | |
| 77 /* utility functions for widget_instance and widget_info */ | |
| 78 static char * | |
| 442 | 79 safe_strdup (const char *s) |
| 428 | 80 { |
| 81 char *result; | |
| 82 if (! s) return 0; | |
| 83 result = (char *) malloc (strlen (s) + 1); | |
| 84 if (! result) | |
| 85 return 0; | |
| 86 strcpy (result, s); | |
| 87 return result; | |
| 88 } | |
| 89 | |
| 90 static void | |
| 91 safe_free_str (char *s) | |
| 92 { | |
| 93 if (s) free (s); | |
| 94 } | |
| 95 | |
| 96 static widget_value *widget_value_free_list = 0; | |
| 97 | |
| 98 widget_value * | |
| 99 malloc_widget_value (void) | |
| 100 { | |
| 101 widget_value *wv; | |
| 102 if (widget_value_free_list) | |
| 103 { | |
| 104 wv = widget_value_free_list; | |
| 105 widget_value_free_list = wv->free_list; | |
| 106 wv->free_list = 0; | |
| 107 } | |
| 108 else | |
| 109 { | |
| 110 wv = (widget_value *) malloc (sizeof (widget_value)); | |
| 111 } | |
| 112 if (wv) | |
| 113 { | |
| 438 | 114 memset (wv, '\0', sizeof (widget_value)); |
| 428 | 115 } |
| 116 return wv; | |
| 117 } | |
| 118 | |
| 119 /* this is analogous to free(). It frees only what was allocated | |
| 120 by malloc_widget_value(), and no substructures. | |
| 121 */ | |
| 122 void | |
| 123 free_widget_value (widget_value *wv) | |
| 124 { | |
| 125 if (wv->free_list) | |
| 126 abort (); | |
| 127 wv->free_list = widget_value_free_list; | |
| 128 widget_value_free_list = wv; | |
| 129 } | |
| 130 | |
| 131 static void | |
| 132 free_widget_value_contents (widget_value *wv) | |
| 133 { | |
| 134 if (wv->name) free (wv->name); | |
| 135 if (wv->value) free (wv->value); | |
| 136 if (wv->key) free (wv->key); | |
| 137 | |
| 138 /* #### - all of this 0xDEADBEEF stuff should be unnecessary | |
| 139 in production code... it should be conditionalized. */ | |
| 140 wv->name = wv->value = wv->key = (char *) 0xDEADBEEF; | |
| 141 | |
| 142 if (wv->toolkit_data && wv->free_toolkit_data) | |
| 143 { | |
| 144 XtFree ((char *) wv->toolkit_data); | |
| 145 wv->toolkit_data = (void *) 0xDEADBEEF; | |
| 146 } | |
| 147 #ifdef NEED_SCROLLBARS | |
| 148 if (wv->scrollbar_data) | |
| 149 { | |
| 150 free (wv->scrollbar_data); | |
| 151 wv->scrollbar_data = NULL; | |
| 152 } | |
| 153 #endif | |
| 154 if (wv->contents && (wv->contents != (widget_value*)1)) | |
| 155 { | |
| 156 free_widget_value_tree (wv->contents); | |
| 157 wv->contents = (widget_value *) 0xDEADBEEF; | |
| 158 } | |
| 434 | 159 |
| 160 free_widget_value_args (wv); | |
| 161 | |
| 428 | 162 if (wv->next) |
| 163 { | |
| 164 free_widget_value_tree (wv->next); | |
| 165 wv->next = (widget_value *) 0xDEADBEEF; | |
| 166 } | |
| 167 } | |
| 168 | |
| 169 void | |
| 170 free_widget_value_tree (widget_value *wv) | |
| 171 { | |
| 172 if (!wv) | |
| 173 return; | |
| 174 | |
| 175 free_widget_value_contents (wv); | |
| 176 free_widget_value (wv); | |
| 177 } | |
| 178 | |
| 179 #ifdef NEED_SCROLLBARS | |
| 180 | |
| 181 static void | |
| 182 copy_scrollbar_values (widget_value *val, widget_value *copy) | |
| 183 { | |
| 184 if (!copy->scrollbar_data) | |
| 185 copy->scrollbar_data = | |
| 186 (scrollbar_values *) malloc (sizeof (scrollbar_values)); | |
| 187 | |
| 188 if (val->scrollbar_data) | |
| 189 *copy->scrollbar_data = *val->scrollbar_data; | |
| 190 else | |
| 438 | 191 memset (copy->scrollbar_data, '\0', sizeof (scrollbar_values)); |
| 428 | 192 } |
| 193 | |
| 194 /* | |
| 195 * Return true if old->scrollbar_data were not equivalent | |
| 3025 | 196 * to new_->scrollbar_data. |
| 428 | 197 */ |
| 198 static Boolean | |
| 1201 | 199 merge_scrollbar_values (widget_value *old, widget_value *new_) |
| 428 | 200 { |
| 201 Boolean changed = False; | |
| 202 | |
| 1201 | 203 if (new_->scrollbar_data && !old->scrollbar_data) |
| 428 | 204 { |
| 1201 | 205 copy_scrollbar_values (new_, old); |
| 428 | 206 changed = True; |
| 207 } | |
| 1201 | 208 else if (!new_->scrollbar_data && old->scrollbar_data) |
| 428 | 209 { |
| 210 free (old->scrollbar_data); | |
| 211 old->scrollbar_data = NULL; | |
| 212 } | |
| 1201 | 213 else if (new_->scrollbar_data && old->scrollbar_data) |
| 428 | 214 { |
| 215 scrollbar_values *old_sb = old->scrollbar_data; | |
| 1201 | 216 scrollbar_values *new_sb = new_->scrollbar_data; |
| 428 | 217 |
| 218 if ((old_sb->line_increment != new_sb->line_increment) || | |
| 219 (old_sb->page_increment != new_sb->page_increment) || | |
| 220 (old_sb->minimum != new_sb->minimum) || | |
| 221 (old_sb->maximum != new_sb->maximum) || | |
| 222 (old_sb->slider_size != new_sb->slider_size) || | |
| 223 (old_sb->slider_position != new_sb->slider_position) || | |
| 224 (old_sb->scrollbar_width != new_sb->scrollbar_width) || | |
| 225 (old_sb->scrollbar_height != new_sb->scrollbar_height) || | |
| 226 (old_sb->scrollbar_x != new_sb->scrollbar_x) || | |
| 227 (old_sb->scrollbar_y != new_sb->scrollbar_y)) | |
| 228 changed = True; | |
| 229 | |
| 230 *old_sb = *new_sb; | |
| 231 } | |
| 232 | |
| 233 return changed; | |
| 234 } | |
| 235 | |
| 236 #endif /* NEED_SCROLLBARS */ | |
| 237 | |
| 771 | 238 #ifdef HAVE_X_WIDGETS |
| 434 | 239 /* |
| 240 * Return true if old->args was not equivalent | |
| 3025 | 241 * to new_->args. |
| 434 | 242 */ |
| 243 static Boolean | |
| 3025 | 244 merge_widget_value_args (widget_value *old, widget_value *new_) |
| 434 | 245 { |
| 246 Boolean changed = False; | |
| 247 | |
| 3025 | 248 if (new_->args && !old->args) |
| 434 | 249 { |
| 3025 | 250 lw_copy_widget_value_args (new_, old); |
| 434 | 251 changed = True; |
| 252 } | |
| 253 /* Generally we don't want to lose values that are already in the | |
| 254 widget. */ | |
| 3025 | 255 else if (!new_->args && old->args) |
| 434 | 256 { |
| 3025 | 257 lw_copy_widget_value_args (old, new_); |
| 434 | 258 changed = True; |
| 259 } | |
| 3025 | 260 else if (new_->args && old->args && new_->args != old->args) |
| 434 | 261 { |
| 262 /* #### Do something more sensible here than just copying the | |
| 263 new values (like actually merging the values). */ | |
| 3025 | 264 lw_copy_widget_value_args (new_, old); |
| 434 | 265 changed = True; |
| 266 } | |
| 3025 | 267 else if (new_->args && new_->args == old->args && new_->args->args_changed == True) |
| 450 | 268 { |
| 269 changed = True; | |
| 270 } | |
| 434 | 271 |
| 272 return changed; | |
| 273 } | |
| 771 | 274 #endif /* HAVE_X_WIDGETS */ |
| 434 | 275 |
| 428 | 276 /* Make a complete copy of a widget_value tree. Store CHANGE into |
| 277 the widget_value tree's `change' field. */ | |
| 278 | |
| 442 | 279 widget_value * |
| 428 | 280 copy_widget_value_tree (widget_value *val, change_type change) |
| 281 { | |
| 282 widget_value *copy; | |
| 283 | |
| 284 if (!val) | |
| 285 return NULL; | |
| 286 if (val == (widget_value *) 1) | |
| 287 return val; | |
| 288 | |
| 289 copy = malloc_widget_value (); | |
| 290 if (copy) | |
| 291 { | |
| 292 /* #### - don't seg fault *here* if out of memory. Menus will be | |
| 293 truncated inexplicably. */ | |
| 294 copy->type = val->type; | |
| 295 copy->name = safe_strdup (val->name); | |
| 296 copy->value = safe_strdup (val->value); | |
| 297 copy->key = safe_strdup (val->key); | |
| 298 copy->accel = val->accel; | |
| 299 copy->enabled = val->enabled; | |
| 300 copy->selected = val->selected; | |
| 301 copy->edited = False; | |
| 302 copy->change = change; | |
| 303 copy->contents = copy_widget_value_tree (val->contents, change); | |
| 304 copy->call_data = val->call_data; | |
| 305 copy->next = copy_widget_value_tree (val->next, change); | |
| 306 copy->toolkit_data = NULL; | |
| 307 copy->free_toolkit_data = False; | |
| 434 | 308 |
| 309 lw_copy_widget_value_args (val, copy); | |
| 428 | 310 #ifdef NEED_SCROLLBARS |
| 311 copy_scrollbar_values (val, copy); | |
| 312 #endif | |
| 313 } | |
| 314 return copy; | |
| 315 } | |
| 316 | |
| 317 /* This function is used to implement incremental menu construction. */ | |
| 318 | |
| 319 widget_value * | |
| 320 replace_widget_value_tree (widget_value *node, widget_value *newtree) | |
| 321 { | |
| 322 widget_value *copy; | |
| 323 | |
| 324 if (!node || !newtree) | |
| 325 abort (); | |
| 326 | |
| 327 copy = copy_widget_value_tree (newtree, STRUCTURAL_CHANGE); | |
| 328 | |
| 329 free_widget_value_contents (node); | |
| 330 *node = *copy; | |
| 331 free_widget_value (copy); /* free the node, but not its contents. */ | |
| 332 return node; | |
| 333 } | |
| 334 | |
| 335 static widget_info * | |
| 442 | 336 allocate_widget_info (const char *type, const char *name, |
| 428 | 337 LWLIB_ID id, widget_value *val, |
| 338 lw_callback pre_activate_cb, lw_callback selection_cb, | |
| 339 lw_callback post_activate_cb) | |
| 340 { | |
| 341 widget_info *info = (widget_info *) malloc (sizeof (widget_info)); | |
| 342 info->type = safe_strdup (type); | |
| 343 info->name = safe_strdup (name); | |
| 344 info->id = id; | |
| 345 info->val = copy_widget_value_tree (val, STRUCTURAL_CHANGE); | |
| 346 info->busy = False; | |
| 347 info->pre_activate_cb = pre_activate_cb; | |
| 348 info->selection_cb = selection_cb; | |
| 349 info->post_activate_cb = post_activate_cb; | |
| 350 info->instances = NULL; | |
| 351 | |
| 352 info->next = all_widget_info; | |
| 353 all_widget_info = info; | |
| 354 | |
| 355 return info; | |
| 356 } | |
| 357 | |
| 358 static void | |
| 359 free_widget_info (widget_info *info) | |
| 360 { | |
| 361 safe_free_str (info->type); | |
| 362 safe_free_str (info->name); | |
| 363 free_widget_value_tree (info->val); | |
| 438 | 364 memset (info, '\0', sizeof (widget_info)); |
| 428 | 365 free (info); |
| 366 } | |
| 367 | |
| 368 static void | |
| 2286 | 369 mark_widget_destroyed (Widget widget, XtPointer closure, |
| 370 XtPointer UNUSED (call_data)) | |
| 428 | 371 { |
| 372 widget_instance *instance = (widget_instance*)closure; | |
| 373 | |
| 374 /* be very conservative */ | |
| 375 if (instance->widget == widget) | |
| 376 instance->widget = NULL; | |
| 377 } | |
| 378 | |
| 379 static widget_instance * | |
| 380 allocate_widget_instance (widget_info *info, Widget parent, Boolean pop_up_p) | |
| 381 { | |
| 382 widget_instance *instance = | |
| 383 (widget_instance *) malloc (sizeof (widget_instance)); | |
| 384 instance->parent = parent; | |
| 385 instance->pop_up_p = pop_up_p; | |
| 386 instance->info = info; | |
| 387 instance->next = info->instances; | |
| 388 info->instances = instance; | |
| 389 | |
| 390 instantiate_widget_instance (instance); | |
| 391 | |
| 392 XtAddCallback (instance->widget, XtNdestroyCallback, | |
| 393 mark_widget_destroyed, (XtPointer)instance); | |
| 394 return instance; | |
| 395 } | |
| 396 | |
| 397 static void | |
| 398 free_widget_instance (widget_instance *instance) | |
| 399 { | |
| 438 | 400 memset (instance, '\0', sizeof (widget_instance)); |
| 428 | 401 free (instance); |
| 402 } | |
| 403 | |
| 404 static widget_info * | |
| 405 get_widget_info (LWLIB_ID id, Boolean remove_p) | |
| 406 { | |
| 407 widget_info *info; | |
| 408 widget_info *prev; | |
| 409 for (prev = NULL, info = all_widget_info; | |
| 410 info; | |
| 411 prev = info, info = info->next) | |
| 412 if (info->id == id) | |
| 413 { | |
| 414 if (remove_p) | |
| 415 { | |
| 416 if (prev) | |
| 417 prev->next = info->next; | |
| 418 else | |
| 419 all_widget_info = info->next; | |
| 420 } | |
| 421 return info; | |
| 422 } | |
| 423 return NULL; | |
| 424 } | |
| 425 | |
| 426 /* Internal function used by the library dependent implementation to get the | |
| 427 widget_value for a given widget in an instance */ | |
| 428 widget_info * | |
| 429 lw_get_widget_info (LWLIB_ID id) | |
| 430 { | |
| 431 return get_widget_info (id, 0); | |
| 432 } | |
| 433 | |
| 434 static int | |
| 435 map_widget_values (widget_value *value, int (*mapfunc) (widget_value *value, | |
| 436 void *closure), | |
| 437 void *closure) | |
| 438 { | |
| 439 int retval = 0; | |
| 440 | |
| 441 if (value->contents) | |
| 442 retval = map_widget_values (value->contents, mapfunc, closure); | |
| 443 if (retval) | |
| 444 return retval; | |
| 445 | |
| 446 if (value->next) | |
| 447 retval = map_widget_values (value->next, mapfunc, closure); | |
| 448 if (retval) | |
| 449 return retval; | |
| 450 | |
| 451 return (mapfunc) (value, closure); | |
| 452 } | |
| 453 | |
| 454 int | |
| 455 lw_map_widget_values (LWLIB_ID id, int (*mapfunc) (widget_value *value, | |
| 456 void *closure), | |
| 457 void *closure) | |
| 458 { | |
| 459 widget_info *info = get_widget_info (id, 0); | |
| 460 | |
| 461 if (!info) | |
| 462 abort (); | |
| 463 | |
| 464 if (info->val) | |
| 465 return map_widget_values (info->val, mapfunc, closure); | |
| 466 return 0; | |
| 467 } | |
| 468 | |
| 469 static widget_instance * | |
| 470 get_widget_instance (Widget widget, Boolean remove_p) | |
| 471 { | |
| 472 widget_info *info; | |
| 473 widget_instance *instance; | |
| 474 widget_instance *prev; | |
| 475 for (info = all_widget_info; info; info = info->next) | |
| 476 for (prev = NULL, instance = info->instances; | |
| 477 instance; | |
| 478 prev = instance, instance = instance->next) | |
| 479 if (instance->widget == widget) | |
| 480 { | |
| 481 if (remove_p) | |
| 482 { | |
| 483 if (prev) | |
| 484 prev->next = instance->next; | |
| 485 else | |
| 486 info->instances = instance->next; | |
| 487 } | |
| 488 return instance; | |
| 489 } | |
| 490 return (widget_instance *) 0; | |
| 491 } | |
| 492 | |
| 493 static widget_instance* | |
| 494 find_instance (LWLIB_ID id, Widget parent, Boolean pop_up_p) | |
| 495 { | |
| 496 widget_info *info = get_widget_info (id, False); | |
| 497 widget_instance *instance; | |
| 498 | |
| 499 if (info) | |
| 500 for (instance = info->instances; instance; instance = instance->next) | |
| 501 if (instance->parent == parent && instance->pop_up_p == pop_up_p) | |
| 502 return instance; | |
| 503 | |
| 504 return NULL; | |
| 505 } | |
| 506 | |
| 507 | |
| 508 /* utility function for widget_value */ | |
| 509 static Boolean | |
| 442 | 510 safe_strcmp (const char *s1, const char *s2) |
| 428 | 511 { |
| 512 if (!!s1 ^ !!s2) return True; | |
| 513 return (s1 && s2) ? strcmp (s1, s2) : s1 ? False : !!s2; | |
| 514 } | |
| 515 | |
| 516 #if 0 | |
| 517 # define EXPLAIN(name, oc, nc, desc, a1, a2) \ | |
| 518 printf ("Change: \"%s\"\tmax(%s=%d,%s=%d)\t%s %d %d\n", \ | |
| 519 name, \ | |
| 520 (oc == NO_CHANGE ? "none" : \ | |
| 521 (oc == INVISIBLE_CHANGE ? "invisible" : \ | |
| 522 (oc == VISIBLE_CHANGE ? "visible" : \ | |
| 523 (oc == STRUCTURAL_CHANGE ? "structural" : "???")))), \ | |
| 524 oc, \ | |
| 525 (nc == NO_CHANGE ? "none" : \ | |
| 526 (nc == INVISIBLE_CHANGE ? "invisible" : \ | |
| 527 (nc == VISIBLE_CHANGE ? "visible" : \ | |
| 528 (nc == STRUCTURAL_CHANGE ? "structural" : "???")))), \ | |
| 529 nc, desc, a1, a2) | |
| 530 #else | |
| 531 # define EXPLAIN(name, oc, nc, desc, a1, a2) | |
| 532 #endif | |
| 533 | |
| 534 | |
| 535 static widget_value * | |
| 536 merge_widget_value (widget_value *val1, widget_value *val2, int level) | |
| 537 { | |
| 538 change_type change; | |
| 539 widget_value *merged_next; | |
| 540 widget_value *merged_contents; | |
| 541 | |
| 542 if (!val1) | |
| 543 { | |
| 544 if (val2) | |
| 545 return copy_widget_value_tree (val2, STRUCTURAL_CHANGE); | |
| 546 else | |
| 547 return NULL; | |
| 548 } | |
| 549 if (!val2) | |
| 550 { | |
| 551 free_widget_value_tree (val1); | |
| 552 return NULL; | |
| 553 } | |
| 554 | |
| 555 change = NO_CHANGE; | |
| 556 | |
| 557 if (val1->type != val2->type) | |
| 558 { | |
| 559 EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "type change", | |
| 560 val1->type, val2->type); | |
| 561 change = max (change, STRUCTURAL_CHANGE); | |
| 562 val1->type = val2->type; | |
| 563 } | |
| 564 if (safe_strcmp (val1->name, val2->name)) | |
| 565 { | |
| 566 EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "name change", | |
| 567 val1->name, val2->name); | |
| 568 change = max (change, STRUCTURAL_CHANGE); | |
| 569 safe_free_str (val1->name); | |
| 570 val1->name = safe_strdup (val2->name); | |
| 571 } | |
| 572 if (safe_strcmp (val1->value, val2->value)) | |
| 573 { | |
| 574 EXPLAIN (val1->name, change, VISIBLE_CHANGE, "value change", | |
| 575 val1->value, val2->value); | |
| 576 change = max (change, VISIBLE_CHANGE); | |
| 577 safe_free_str (val1->value); | |
| 578 val1->value = safe_strdup (val2->value); | |
| 579 } | |
| 580 if (safe_strcmp (val1->key, val2->key)) | |
| 581 { | |
| 582 EXPLAIN (val1->name, change, VISIBLE_CHANGE, "key change", | |
| 583 val1->key, val2->key); | |
| 584 change = max (change, VISIBLE_CHANGE); | |
| 585 safe_free_str (val1->key); | |
| 586 val1->key = safe_strdup (val2->key); | |
| 587 } | |
| 588 if (val1->accel != val2->accel) | |
| 589 { | |
| 590 EXPLAIN (val1->name, change, VISIBLE_CHANGE, "accelerator change", | |
| 591 val1->accel, val2->accel); | |
| 592 change = max (change, VISIBLE_CHANGE); | |
| 593 val1->accel = val2->accel; | |
| 594 } | |
| 595 if (val1->enabled != val2->enabled) | |
| 596 { | |
| 597 EXPLAIN (val1->name, change, VISIBLE_CHANGE, "enablement change", | |
| 598 val1->enabled, val2->enabled); | |
| 599 change = max (change, VISIBLE_CHANGE); | |
| 600 val1->enabled = val2->enabled; | |
| 601 } | |
| 602 if (val1->selected != val2->selected) | |
| 603 { | |
| 604 EXPLAIN (val1->name, change, VISIBLE_CHANGE, "selection change", | |
| 605 val1->selected, val2->selected); | |
| 606 change = max (change, VISIBLE_CHANGE); | |
| 607 val1->selected = val2->selected; | |
| 608 } | |
| 609 if (val1->call_data != val2->call_data) | |
| 610 { | |
| 611 EXPLAIN (val1->name, change, INVISIBLE_CHANGE, "call-data change", | |
| 612 val1->call_data, val2->call_data); | |
| 613 change = max (change, INVISIBLE_CHANGE); | |
| 614 val1->call_data = val2->call_data; | |
| 615 } | |
| 771 | 616 #ifdef HAVE_X_WIDGETS |
| 434 | 617 if (merge_widget_value_args (val1, val2)) |
| 618 { | |
| 619 EXPLAIN (val1->name, change, VISIBLE_CHANGE, "widget change", 0, 0); | |
| 620 change = max (change, VISIBLE_CHANGE); | |
| 621 } | |
| 622 #endif | |
| 623 | |
| 428 | 624 #ifdef NEED_SCROLLBARS |
| 625 if (merge_scrollbar_values (val1, val2)) | |
| 626 { | |
| 627 EXPLAIN (val1->name, change, VISIBLE_CHANGE, "scrollbar change", 0, 0); | |
| 628 change = max (change, VISIBLE_CHANGE); | |
| 629 } | |
| 630 #endif | |
| 631 | |
| 632 if (level > 0) | |
| 633 { | |
| 634 merged_contents = | |
| 635 merge_widget_value (val1->contents, val2->contents, level - 1); | |
| 636 | |
| 637 if (val1->contents && !merged_contents) | |
| 638 { | |
| 639 EXPLAIN (val1->name, change, INVISIBLE_CHANGE, "(contents gone)", | |
| 640 0, 0); | |
| 641 change = max (change, INVISIBLE_CHANGE); | |
| 642 } | |
| 643 else if (merged_contents && merged_contents->change != NO_CHANGE) | |
| 644 { | |
| 645 EXPLAIN (val1->name, change, INVISIBLE_CHANGE, "(contents change)", | |
| 646 0, 0); | |
| 647 change = max (change, INVISIBLE_CHANGE); | |
| 648 } | |
| 649 | |
| 650 val1->contents = merged_contents; | |
| 651 } | |
| 652 | |
| 653 merged_next = merge_widget_value (val1->next, val2->next, level); | |
| 654 | |
| 655 if (val1->next && !merged_next) | |
| 656 { | |
| 657 EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "(following gone)", | |
| 658 0, 0); | |
| 659 change = max (change, STRUCTURAL_CHANGE); | |
| 660 } | |
| 661 else if (merged_next) | |
| 662 { | |
| 663 if (merged_next->change) | |
| 664 { | |
| 665 EXPLAIN (val1->name, change, merged_next->change, "(following change)", | |
| 666 0, 0); | |
| 2286 | 667 change = max (change, merged_next->change); |
| 428 | 668 } |
| 669 } | |
| 670 | |
| 671 val1->next = merged_next; | |
| 672 | |
| 673 val1->change = change; | |
| 674 | |
| 675 if (change > NO_CHANGE && val1->toolkit_data) | |
| 676 { | |
| 677 if (val1->free_toolkit_data) | |
| 678 XtFree ((char *) val1->toolkit_data); | |
| 679 val1->toolkit_data = NULL; | |
| 680 } | |
| 681 | |
| 682 return val1; | |
| 683 } | |
| 684 | |
| 685 | |
| 686 /* modifying the widgets */ | |
| 687 static Widget | |
| 442 | 688 name_to_widget (widget_instance *instance, const char *name) |
| 428 | 689 { |
| 690 Widget widget = NULL; | |
| 691 | |
| 692 if (!instance->widget) | |
| 693 return NULL; | |
| 694 | |
| 695 if (!strcmp (XtName (instance->widget), name)) | |
| 696 widget = instance->widget; | |
| 697 else | |
| 698 { | |
| 699 int length = strlen (name) + 2; | |
| 700 char *real_name = (char *) alloca (length); | |
| 701 real_name [0] = '*'; | |
| 702 strcpy (real_name + 1, name); | |
| 703 | |
| 704 widget = XtNameToWidget (instance->widget, real_name); | |
| 705 } | |
| 706 return widget; | |
| 707 } | |
| 708 | |
| 709 static void | |
| 710 set_one_value (widget_instance *instance, widget_value *val, Boolean deep_p) | |
| 711 { | |
| 712 Widget widget = name_to_widget (instance, val->name); | |
| 713 | |
| 714 if (widget) | |
| 715 { | |
| 716 #ifdef NEED_LUCID | |
| 717 if (lw_lucid_widget_p (instance->widget)) | |
| 718 xlw_update_one_widget (instance, widget, val, deep_p); | |
| 719 #endif | |
| 720 #ifdef NEED_MOTIF | |
| 721 if (lw_motif_widget_p (instance->widget)) | |
| 722 xm_update_one_widget (instance, widget, val, deep_p); | |
| 723 #endif | |
| 724 #ifdef NEED_ATHENA | |
| 725 if (lw_xaw_widget_p (instance->widget)) | |
| 726 xaw_update_one_widget (instance, widget, val, deep_p); | |
| 727 #endif | |
| 728 } | |
| 729 } | |
| 730 | |
| 731 static void | |
| 732 update_one_widget_instance (widget_instance *instance, Boolean deep_p) | |
| 733 { | |
| 734 widget_value *val; | |
| 735 | |
| 736 if (!instance->widget) | |
| 737 /* the widget was destroyed */ | |
| 738 return; | |
| 739 | |
| 740 for (val = instance->info->val; val; val = val->next) | |
| 741 if (val->change != NO_CHANGE) | |
| 742 set_one_value (instance, val, deep_p); | |
| 743 } | |
| 744 | |
| 745 static void | |
| 746 update_all_widget_values (widget_info *info, Boolean deep_p) | |
| 747 { | |
| 748 widget_instance *instance; | |
| 749 widget_value *val; | |
| 750 | |
| 751 for (instance = info->instances; instance; instance = instance->next) | |
| 752 update_one_widget_instance (instance, deep_p); | |
| 753 | |
| 754 for (val = info->val; val; val = val->next) | |
| 450 | 755 { |
| 756 val->change = NO_CHANGE; | |
| 757 if (val->args) | |
| 758 val->args->args_changed = False; | |
| 759 } | |
| 428 | 760 } |
| 761 | |
| 762 void | |
| 763 lw_modify_all_widgets (LWLIB_ID id, widget_value *val, Boolean deep_p) | |
| 764 { | |
| 765 widget_info *info = get_widget_info (id, False); | |
| 766 widget_value *new_val; | |
| 767 widget_value *next_new_val; | |
| 768 widget_value *cur; | |
| 769 widget_value *prev; | |
| 770 widget_value *next; | |
| 771 int found; | |
| 772 | |
| 773 if (!info) | |
| 774 return; | |
| 775 | |
| 776 for (new_val = val; new_val; new_val = new_val->next) | |
| 777 { | |
| 778 next_new_val = new_val->next; | |
| 779 new_val->next = NULL; | |
| 780 found = False; | |
| 781 for (prev = NULL, cur = info->val; cur; prev = cur, cur = cur->next) | |
| 782 if (!strcmp (cur->name, new_val->name)) | |
| 783 { | |
| 784 found = True; | |
| 785 next = cur->next; | |
| 786 cur->next = NULL; | |
| 787 cur = merge_widget_value (cur, new_val, deep_p ? 1000 : 1); | |
| 788 if (prev) | |
| 789 prev->next = cur ? cur : next; | |
| 790 else | |
| 791 info->val = cur ? cur : next; | |
| 792 if (cur) | |
| 793 cur->next = next; | |
| 794 break; | |
| 795 } | |
| 796 if (!found) | |
| 797 { | |
| 798 /* Could not find it, add it */ | |
| 799 if (prev) | |
| 800 prev->next = copy_widget_value_tree (new_val, STRUCTURAL_CHANGE); | |
| 801 else | |
| 802 info->val = copy_widget_value_tree (new_val, STRUCTURAL_CHANGE); | |
| 803 } | |
| 804 new_val->next = next_new_val; | |
| 805 } | |
| 806 | |
| 807 update_all_widget_values (info, deep_p); | |
| 808 } | |
| 809 | |
| 810 | |
| 811 /* creating the widgets */ | |
| 812 | |
| 813 static void | |
| 814 initialize_widget_instance (widget_instance *instance) | |
| 815 { | |
| 816 widget_value *val; | |
| 817 | |
| 818 for (val = instance->info->val; val; val = val->next) | |
| 819 val->change = STRUCTURAL_CHANGE; | |
| 820 | |
| 821 update_one_widget_instance (instance, True); | |
| 822 | |
| 823 for (val = instance->info->val; val; val = val->next) | |
| 450 | 824 { |
| 825 val->change = NO_CHANGE; | |
| 826 if (val->args) | |
| 827 val->args->args_changed = False; | |
| 828 } | |
| 428 | 829 } |
| 830 | |
| 1201 | 831 #if defined (NEED_LUCID) || defined (NEED_ATHENA) || defined (NEED_MOTIF) |
| 832 | |
| 442 | 833 /* strcasecmp() is not sufficiently portable or standard, |
| 834 and it's easier just to write our own. */ | |
| 835 static int | |
| 836 ascii_strcasecmp (const char *s1, const char *s2) | |
| 837 { | |
| 838 while (1) | |
| 839 { | |
| 840 char c1 = *s1++; | |
| 841 char c2 = *s2++; | |
| 842 if (c1 >= 'A' && c1 <= 'Z') c1 += 'a' - 'A'; | |
| 843 if (c2 >= 'A' && c2 <= 'Z') c2 += 'a' - 'A'; | |
| 844 if (c1 != c2) return c1 - c2; | |
| 845 if (c1 == '\0') return 0; | |
| 846 } | |
| 847 } | |
| 428 | 848 |
| 849 static widget_creation_function | |
| 450 | 850 find_in_table (const char *type, const widget_creation_entry table[]) |
| 428 | 851 { |
| 450 | 852 const widget_creation_entry *cur; |
| 428 | 853 for (cur = table; cur->type; cur++) |
| 442 | 854 if (!ascii_strcasecmp (type, cur->type)) |
| 428 | 855 return cur->function; |
| 856 return NULL; | |
| 857 } | |
| 858 | |
| 872 | 859 #endif |
| 860 | |
| 428 | 861 static Boolean |
| 442 | 862 dialog_spec_p (const char *name) |
| 428 | 863 { |
| 864 /* return True if name matches [EILPQeilpq][1-9][Bb] or | |
| 865 [EILPQeilpq][1-9][Bb][Rr][1-9] */ | |
| 866 if (!name) | |
| 867 return False; | |
| 868 | |
| 869 switch (name [0]) | |
| 870 { | |
| 871 case 'E': case 'I': case 'L': case 'P': case 'Q': | |
| 872 case 'e': case 'i': case 'l': case 'p': case 'q': | |
| 873 if (name [1] >= '0' && name [1] <= '9') | |
| 874 { | |
| 875 if (name [2] != 'B' && name [2] != 'b') | |
| 876 return False; | |
| 877 if (!name [3]) | |
| 878 return True; | |
| 879 if ((name [3] == 'T' || name [3] == 't') && !name [4]) | |
| 880 return True; | |
| 881 if ((name [3] == 'R' || name [3] == 'r') | |
| 882 && name [4] >= '0' && name [4] <= '9' && !name [5]) | |
| 883 return True; | |
| 884 return False; | |
| 885 } | |
| 886 else | |
| 887 return False; | |
| 888 | |
| 889 default: | |
| 890 return False; | |
| 891 } | |
| 892 } | |
| 893 | |
| 894 static void | |
| 895 instantiate_widget_instance (widget_instance *instance) | |
| 896 { | |
| 897 widget_creation_function function = NULL; | |
| 898 | |
| 899 #ifdef NEED_LUCID | |
| 900 if (!function) | |
| 901 function = find_in_table (instance->info->type, xlw_creation_table); | |
| 902 #endif | |
| 903 #ifdef NEED_MOTIF | |
| 904 if (!function) | |
| 905 function = find_in_table (instance->info->type, xm_creation_table); | |
| 906 #endif | |
| 907 #ifdef NEED_ATHENA | |
| 908 if (!function) | |
| 909 function = find_in_table (instance->info->type, xaw_creation_table); | |
| 910 #endif | |
| 911 | |
| 912 if (!function) | |
| 913 { | |
| 914 if (dialog_spec_p (instance->info->type)) | |
| 915 { | |
| 916 #ifdef LWLIB_DIALOGS_MOTIF | |
| 917 if (!function) | |
| 918 function = xm_create_dialog; | |
| 919 #endif | |
| 920 #ifdef LWLIB_DIALOGS_ATHENA | |
| 921 if (!function) | |
| 922 function = xaw_create_dialog; | |
| 923 #endif | |
| 924 #ifdef LWLIB_DIALOGS_LUCID | |
| 925 /* not yet (not ever?) */ | |
| 926 #endif | |
| 927 } | |
| 928 } | |
| 929 | |
| 930 if (!function) | |
| 931 { | |
| 932 fprintf (stderr, "No creation function for widget type %s\n", | |
| 933 instance->info->type); | |
| 934 abort (); | |
| 935 } | |
| 936 | |
| 937 instance->widget = (*function) (instance); | |
| 938 | |
| 939 if (!instance->widget) | |
| 940 abort (); | |
| 941 | |
| 942 /* XtRealizeWidget (instance->widget);*/ | |
| 943 } | |
| 944 | |
| 945 void | |
| 442 | 946 lw_register_widget (const char *type, const char *name, |
| 428 | 947 LWLIB_ID id, widget_value *val, |
| 948 lw_callback pre_activate_cb, lw_callback selection_cb, | |
| 949 lw_callback post_activate_cb) | |
| 950 { | |
| 951 if (!get_widget_info (id, False)) | |
| 952 allocate_widget_info (type, name, id, val, pre_activate_cb, selection_cb, | |
| 953 post_activate_cb); | |
| 954 } | |
| 955 | |
| 956 Widget | |
| 957 lw_get_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p) | |
| 958 { | |
| 959 widget_instance *instance = find_instance (id, parent, pop_up_p); | |
| 960 return instance ? instance->widget : NULL; | |
| 961 } | |
| 962 | |
| 963 Widget | |
| 964 lw_make_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p) | |
| 965 { | |
| 966 widget_instance *instance = find_instance (id, parent, pop_up_p); | |
| 967 | |
| 968 if (!instance) | |
| 969 { | |
| 970 widget_info *info = get_widget_info (id, False); | |
| 971 if (!info) | |
| 972 return NULL; | |
| 973 instance = allocate_widget_instance (info, parent, pop_up_p); | |
| 974 initialize_widget_instance (instance); | |
| 975 } | |
| 976 if (!instance->widget) | |
| 977 abort (); | |
| 978 return instance->widget; | |
| 979 } | |
| 980 | |
| 981 Widget | |
| 442 | 982 lw_create_widget (const char *type, const char *name, |
| 428 | 983 LWLIB_ID id, widget_value *val, |
| 984 Widget parent, Boolean pop_up_p, lw_callback pre_activate_cb, | |
| 985 lw_callback selection_cb, lw_callback post_activate_cb) | |
| 986 { | |
| 987 lw_register_widget (type, name, id, val, pre_activate_cb, selection_cb, | |
| 988 post_activate_cb); | |
| 989 return lw_make_widget (id, parent, pop_up_p); | |
| 990 } | |
| 991 | |
| 992 | |
| 993 /* destroying the widgets */ | |
| 994 static void | |
| 995 destroy_one_instance (widget_instance *instance) | |
| 996 { | |
| 997 /* Remove the destroy callback on the widget; that callback will try to | |
| 998 dereference the instance object (to set its widget slot to 0, since the | |
| 999 widget is dead.) Since the instance is now dead, we don't have to worry | |
| 1000 about the fact that its widget is dead too. | |
| 1001 | |
| 1002 This happens in the Phase2Destroy of the widget, so this callback would | |
| 1003 not have been run until arbitrarily long after the instance was freed. | |
| 1004 */ | |
| 1005 if (instance->widget) | |
| 1006 XtRemoveCallback (instance->widget, XtNdestroyCallback, | |
| 1007 mark_widget_destroyed, (XtPointer)instance); | |
| 1008 | |
| 1009 if (instance->widget) | |
| 1010 { | |
| 1011 /* The else are pretty tricky here, including the empty statement | |
| 1012 at the end because it would be very bad to destroy a widget | |
| 1013 twice. */ | |
| 1014 #ifdef NEED_LUCID | |
| 1015 if (lw_lucid_widget_p (instance->widget)) | |
| 1016 xlw_destroy_instance (instance); | |
| 1017 else | |
| 1018 #endif | |
| 1019 #ifdef NEED_MOTIF | |
| 1020 if (lw_motif_widget_p (instance->widget)) | |
| 1021 xm_destroy_instance (instance); | |
| 1022 else | |
| 1023 #endif | |
| 1024 #ifdef NEED_ATHENA | |
| 1025 if (lw_xaw_widget_p (instance->widget)) | |
| 1026 xaw_destroy_instance (instance); | |
| 1027 else | |
| 1028 #endif | |
| 1029 { | |
| 1030 /* do not remove the empty statement */ | |
| 1031 ; | |
| 1032 } | |
| 1033 } | |
| 1034 | |
| 1035 free_widget_instance (instance); | |
| 1036 } | |
| 1037 | |
| 1038 void | |
| 1039 lw_destroy_widget (Widget w) | |
| 1040 { | |
| 1041 widget_instance *instance = get_widget_instance (w, True); | |
| 1042 | |
| 1043 if (instance) | |
| 1044 { | |
| 1045 widget_info *info = instance->info; | |
| 1046 /* instance has already been removed from the list; free it */ | |
| 1047 destroy_one_instance (instance); | |
| 1048 /* if there are no instances left, free the info too */ | |
| 1049 if (!info->instances) | |
| 1050 lw_destroy_all_widgets (info->id); | |
| 1051 } | |
| 1052 } | |
| 1053 | |
| 1054 void | |
| 1055 lw_destroy_all_widgets (LWLIB_ID id) | |
| 1056 { | |
| 1057 widget_info *info = get_widget_info (id, True); | |
| 1058 widget_instance *instance; | |
| 1059 widget_instance *next; | |
| 1060 | |
| 1061 if (info) | |
| 1062 { | |
| 1063 for (instance = info->instances; instance; ) | |
| 1064 { | |
| 1065 next = instance->next; | |
| 1066 destroy_one_instance (instance); | |
| 1067 instance = next; | |
| 1068 } | |
| 1069 free_widget_info (info); | |
| 1070 } | |
| 1071 } | |
| 1072 | |
| 1073 void | |
| 442 | 1074 lw_destroy_everything (void) |
| 428 | 1075 { |
| 1076 while (all_widget_info) | |
| 1077 lw_destroy_all_widgets (all_widget_info->id); | |
| 1078 } | |
| 1079 | |
| 1080 void | |
| 442 | 1081 lw_destroy_all_pop_ups (void) |
| 428 | 1082 { |
| 1083 widget_info *info; | |
| 1084 widget_info *next; | |
| 1085 widget_instance *instance; | |
| 1086 | |
| 1087 for (info = all_widget_info; info; info = next) | |
| 1088 { | |
| 1089 next = info->next; | |
| 1090 instance = info->instances; | |
| 1091 if (instance && instance->pop_up_p) | |
| 1092 lw_destroy_all_widgets (info->id); | |
| 1093 } | |
| 1094 } | |
| 1095 | |
| 1096 Widget | |
| 1097 lw_raise_all_pop_up_widgets (void) | |
| 1098 { | |
| 1099 widget_info *info; | |
| 1100 widget_instance *instance; | |
| 1101 Widget result = NULL; | |
| 1102 | |
| 1103 for (info = all_widget_info; info; info = info->next) | |
| 1104 for (instance = info->instances; instance; instance = instance->next) | |
| 1105 if (instance->pop_up_p) | |
| 1106 { | |
| 1107 Widget widget = instance->widget; | |
| 1108 if (widget) | |
| 1109 { | |
| 1110 if (XtIsManaged (widget) | |
| 1111 #ifdef NEED_MOTIF | |
| 1112 /* What a complete load of crap!!!! | |
| 1113 When a dialogShell is on the screen, it is not managed! | |
| 1114 */ | |
| 1115 || (lw_motif_widget_p (instance->widget) && | |
| 1116 XtIsManaged (first_child (widget))) | |
| 1117 #endif | |
| 1118 ) | |
| 1119 { | |
| 1120 if (!result) | |
| 1121 result = widget; | |
| 1122 XMapRaised (XtDisplay (widget), XtWindow (widget)); | |
| 1123 } | |
| 1124 } | |
| 1125 } | |
| 1126 return result; | |
| 1127 } | |
| 1128 | |
| 1129 static void | |
| 1130 lw_pop_all_widgets (LWLIB_ID id, Boolean up) | |
| 1131 { | |
| 1132 widget_info *info = get_widget_info (id, False); | |
| 1133 widget_instance *instance; | |
| 1134 | |
| 1135 if (info) | |
| 1136 for (instance = info->instances; instance; instance = instance->next) | |
| 1137 if (instance->pop_up_p && instance->widget) | |
| 1138 { | |
| 1139 #ifdef NEED_LUCID | |
| 1140 if (lw_lucid_widget_p (instance->widget)) | |
| 1141 { | |
| 1142 XtRealizeWidget (instance->widget); | |
| 1143 xlw_pop_instance (instance, up); | |
| 1144 } | |
| 1145 #endif | |
| 1146 #ifdef NEED_MOTIF | |
| 1147 if (lw_motif_widget_p (instance->widget)) | |
| 1148 { | |
| 1149 XtRealizeWidget (instance->widget); | |
| 1150 xm_pop_instance (instance, up); | |
| 1151 } | |
| 1152 #endif | |
| 1153 #ifdef NEED_ATHENA | |
| 1154 if (lw_xaw_widget_p (instance->widget)) | |
| 1155 { | |
| 1156 XtRealizeWidget (XtParent (instance->widget)); | |
| 1157 XtRealizeWidget (instance->widget); | |
| 1158 xaw_pop_instance (instance, up); | |
| 1159 } | |
| 1160 #endif | |
| 1161 } | |
| 1162 } | |
| 1163 | |
| 1164 void | |
| 1165 lw_pop_up_all_widgets (LWLIB_ID id) | |
| 1166 { | |
| 1167 lw_pop_all_widgets (id, True); | |
| 1168 } | |
| 1169 | |
| 1170 void | |
| 1171 lw_pop_down_all_widgets (LWLIB_ID id) | |
| 1172 { | |
| 1173 lw_pop_all_widgets (id, False); | |
| 1174 } | |
| 1175 | |
| 1176 void | |
| 1177 lw_popup_menu (Widget widget, XEvent *event) | |
| 1178 { | |
| 1179 #ifdef LWLIB_MENUBARS_LUCID | |
| 1180 if (lw_lucid_widget_p (widget)) | |
| 1181 xlw_popup_menu (widget, event); | |
| 1182 #endif | |
| 1183 #ifdef LWLIB_MENUBARS_MOTIF | |
| 1184 if (lw_motif_widget_p (widget)) | |
| 1185 xm_popup_menu (widget, event); | |
| 1186 #endif | |
| 1187 #ifdef LWLIB_MENUBARS_ATHENA | |
| 1188 if (lw_xaw_widget_p (widget)) | |
| 1189 xaw_popup_menu (widget, event); /* not implemented */ | |
| 1190 #endif | |
| 1191 } | |
| 1192 | |
| 1193 /* get the values back */ | |
| 1194 static Boolean | |
| 1195 get_one_value (widget_instance *instance, widget_value *val) | |
| 1196 { | |
| 1197 Widget widget = name_to_widget (instance, val->name); | |
| 1198 | |
| 1199 if (widget) | |
| 1200 { | |
| 1201 #ifdef NEED_LUCID | |
| 1202 if (lw_lucid_widget_p (instance->widget)) | |
| 1203 xlw_update_one_value (instance, widget, val); | |
| 1204 #endif | |
| 1205 #ifdef NEED_MOTIF | |
| 1206 if (lw_motif_widget_p (instance->widget)) | |
| 1207 xm_update_one_value (instance, widget, val); | |
| 1208 #endif | |
| 1209 #ifdef NEED_ATHENA | |
| 1210 if (lw_xaw_widget_p (instance->widget)) | |
| 1211 xaw_update_one_value (instance, widget, val); | |
| 1212 #endif | |
| 1213 return True; | |
| 1214 } | |
| 1215 else | |
| 1216 return False; | |
| 1217 } | |
| 1218 | |
| 1219 Boolean | |
| 1220 lw_get_some_values (LWLIB_ID id, widget_value *val_out) | |
| 1221 { | |
| 1222 widget_info *info = get_widget_info (id, False); | |
| 1223 widget_instance *instance; | |
| 1224 widget_value *val; | |
| 1225 Boolean result = False; | |
| 1226 | |
| 1227 if (!info) | |
| 1228 return False; | |
| 1229 | |
| 1230 instance = info->instances; | |
| 1231 if (!instance) | |
| 1232 return False; | |
| 1233 | |
| 1234 for (val = val_out; val; val = val->next) | |
| 1235 if (get_one_value (instance, val)) | |
| 1236 result = True; | |
| 1237 | |
| 1238 return result; | |
| 1239 } | |
| 1240 | |
| 1241 widget_value* | |
| 1242 lw_get_all_values (LWLIB_ID id) | |
| 1243 { | |
| 1244 widget_info *info = get_widget_info (id, False); | |
| 1245 widget_value *val = info->val; | |
| 1246 if (lw_get_some_values (id, val)) | |
| 1247 return val; | |
| 1248 else | |
| 1249 return NULL; | |
| 1250 } | |
| 1251 | |
| 1252 /* internal function used by the library dependent implementation to get the | |
| 1253 widget_value for a given widget in an instance */ | |
| 1254 widget_value* | |
| 1255 lw_get_widget_value_for_widget (widget_instance *instance, Widget w) | |
| 1256 { | |
| 1257 char *name = XtName (w); | |
| 1258 widget_value *cur; | |
| 1259 for (cur = instance->info->val; cur; cur = cur->next) | |
| 1260 if (!strcmp (cur->name, name)) | |
| 1261 return cur; | |
| 1262 return NULL; | |
| 1263 } | |
| 1264 | |
| 1265 | |
| 1266 /* update other instances value when one thing changed */ | |
| 1267 /* This function can be used as a an XtCallback for the widgets that get | |
| 1268 modified to update other instances of the widgets. Closure should be the | |
| 1269 widget_instance. */ | |
| 1270 void | |
| 1271 lw_internal_update_other_instances (Widget widget, XtPointer closure, | |
| 2286 | 1272 XtPointer UNUSED (call_data)) |
| 428 | 1273 { |
| 1274 /* To forbid recursive calls */ | |
| 1275 static Boolean updating; | |
| 1276 | |
| 1277 widget_instance *instance = (widget_instance*)closure; | |
| 1278 char *name = XtName (widget); | |
| 1279 widget_info *info; | |
| 1280 widget_instance *cur; | |
| 1281 widget_value *val; | |
| 1282 | |
| 1283 /* never recurse as this could cause infinite recursions. */ | |
| 1284 if (updating) | |
| 1285 return; | |
| 1286 | |
| 1287 /* protect against the widget being destroyed */ | |
| 1288 if (XtWidgetBeingDestroyedP (widget)) | |
| 1289 return; | |
| 1290 | |
| 1291 /* Return immediately if there are no other instances */ | |
| 1292 info = instance->info; | |
| 1293 if (!info->instances->next) | |
| 1294 return; | |
| 1295 | |
| 1296 updating = True; | |
| 1297 | |
| 1298 for (val = info->val; val && strcmp (val->name, name); val = val->next); | |
| 1299 | |
| 1300 if (val && get_one_value (instance, val)) | |
| 1301 for (cur = info->instances; cur; cur = cur->next) | |
| 1302 if (cur != instance) | |
| 1303 set_one_value (cur, val, True); | |
| 1304 | |
| 1305 updating = False; | |
| 1306 } | |
| 1307 | |
| 1308 | |
| 1309 | |
| 1310 /* get the id */ | |
| 1311 | |
| 1312 LWLIB_ID | |
| 1313 lw_get_widget_id (Widget w) | |
| 1314 { | |
| 1315 widget_instance *instance = get_widget_instance (w, False); | |
| 1316 | |
| 1317 return instance ? instance->info->id : 0; | |
| 1318 } | |
| 1319 | |
| 1320 | |
| 1321 /* set the keyboard focus */ | |
| 1322 void | |
| 1323 lw_set_keyboard_focus (Widget parent, Widget w) | |
| 1324 { | |
| 1325 #if defined(NEED_MOTIF) && !defined(LESSTIF_VERSION) | |
| 1326 /* This loses with Lesstif v0.75a */ | |
| 1327 xm_set_keyboard_focus (parent, w); | |
| 1328 #else | |
| 1329 XtSetKeyboardFocus (parent, w); | |
| 1330 #endif | |
| 1331 } | |
| 1332 | |
| 1333 | |
| 1334 /* Show busy */ | |
| 1335 static void | |
| 2286 | 1336 show_one_widget_busy (Widget w, Boolean UNUSED (flag)) |
| 428 | 1337 { |
| 1338 Pixel foreground = 0; | |
| 1339 Pixel background = 1; | |
| 1340 Widget widget_to_invert = XtNameToWidget (w, "*sheet"); | |
| 1341 Arg al [2]; | |
| 1342 | |
| 1343 if (!widget_to_invert) | |
| 1344 widget_to_invert = w; | |
| 1345 | |
| 1346 XtSetArg (al [0], XtNforeground, &foreground); | |
| 1347 XtSetArg (al [1], XtNbackground, &background); | |
| 1348 XtGetValues (widget_to_invert, al, 2); | |
| 1349 | |
| 1350 XtSetArg (al [0], XtNforeground, background); | |
| 1351 XtSetArg (al [1], XtNbackground, foreground); | |
| 1352 XtSetValues (widget_to_invert, al, 2); | |
| 1353 } | |
| 1354 | |
| 1355 void | |
| 1356 lw_show_busy (Widget w, Boolean busy) | |
| 1357 { | |
| 1358 widget_instance *instance = get_widget_instance (w, False); | |
| 1359 widget_info *info; | |
| 1360 widget_instance *next; | |
| 1361 | |
| 1362 if (instance) | |
| 1363 { | |
| 1364 info = instance->info; | |
| 1365 if (info->busy != busy) | |
| 1366 { | |
| 1367 for (next = info->instances; next; next = next->next) | |
| 1368 if (next->widget) | |
| 1369 show_one_widget_busy (next->widget, busy); | |
| 1370 info->busy = busy; | |
| 1371 } | |
| 1372 } | |
| 1373 } | |
| 1374 | |
| 1375 void lw_add_value_args_to_args (widget_value* wv, ArgList addto, int* offset) | |
| 1376 { | |
| 1377 int i; | |
| 434 | 1378 if (wv->args && wv->args->nargs) |
| 428 | 1379 { |
| 434 | 1380 for (i = 0; i<wv->args->nargs; i++) |
| 428 | 1381 { |
| 434 | 1382 addto[i + *offset] = wv->args->args[i]; |
| 428 | 1383 } |
| 434 | 1384 *offset += wv->args->nargs; |
| 428 | 1385 } |
| 1386 } | |
| 1387 | |
|
4528
726060ee587c
First draft of g++ 4.3 warning removal patch. Builds. *Needs ChangeLogs.*
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4522
diff
changeset
|
1388 XtArgVal lw_get_value_arg (widget_value* wv, const String name) |
| 639 | 1389 { |
| 1390 int i; | |
| 1391 if (wv->args) | |
| 1392 { | |
| 1393 for (i = 0; i < wv->args->nargs; i++) | |
| 1394 { | |
| 1395 if (!strcmp (wv->args->args[i].name, name)) | |
| 1396 { | |
| 1397 return wv->args->args[i].value; | |
| 1398 } | |
| 1399 } | |
| 1400 } | |
| 1401 return (XtArgVal)0; | |
| 1402 } | |
| 1403 | |
| 434 | 1404 void lw_add_widget_value_arg (widget_value* wv, String name, XtArgVal value) |
| 1405 { | |
| 442 | 1406 int i = 0; |
| 434 | 1407 if (!wv->args) |
| 1408 { | |
| 1409 wv->args = (widget_args *) malloc (sizeof (widget_args)); | |
| 438 | 1410 memset (wv->args, '\0', sizeof (widget_args)); |
| 434 | 1411 wv->args->ref_count = 1; |
| 1412 wv->args->nargs = 0; | |
| 1413 wv->args->args = (ArgList) malloc (sizeof (Arg) * 10); | |
| 438 | 1414 memset (wv->args->args, '\0', sizeof (Arg) * 10); |
| 434 | 1415 } |
| 1416 | |
| 1417 if (wv->args->nargs > 10) | |
| 1418 return; | |
| 1419 | |
| 450 | 1420 /* Register the change. */ |
| 1421 wv->args->args_changed = True; | |
| 442 | 1422 /* If the arg is already there then we must replace it. */ |
| 1423 for (i = 0; i < wv->args->nargs; i++) | |
| 1424 { | |
| 1425 if (!strcmp (wv->args->args[i].name, name)) | |
| 1426 { | |
| 1427 XtSetArg (wv->args->args [i], name, value); | |
| 1428 break; | |
| 1429 } | |
| 1430 } | |
| 1431 if (i >= wv->args->nargs) | |
| 1432 { | |
| 1433 XtSetArg (wv->args->args [wv->args->nargs], name, value); wv->args->nargs++; | |
| 1434 } | |
| 434 | 1435 } |
| 1436 | |
| 1437 static void free_widget_value_args (widget_value* wv) | |
| 1438 { | |
| 1439 if (wv->args) | |
| 1440 { | |
| 1441 if (--wv->args->ref_count <= 0) | |
| 1442 { | |
| 1443 #ifdef LWLIB_WIDGETS_MOTIF | |
| 1444 int i; | |
| 1445 for (i = 0; i < wv->args->nargs; i++) | |
| 1446 { | |
| 1447 if (!strcmp (wv->args->args[i].name, XmNfontList)) | |
| 1448 XmFontListFree ((XmFontList)wv->args->args[i].value); | |
| 1449 } | |
| 1450 #endif | |
| 1451 free (wv->args->args); | |
| 1452 free (wv->args); | |
| 442 | 1453 wv->args = 0; |
| 434 | 1454 } |
| 1455 } | |
| 1456 } | |
| 1457 | |
| 1458 void lw_copy_widget_value_args (widget_value* val, widget_value* copy) | |
| 1459 { | |
| 442 | 1460 if (val == copy || val->args == copy->args) |
| 1461 return; | |
| 1462 | |
| 1463 if (copy->args) | |
| 434 | 1464 { |
| 442 | 1465 free_widget_value_args (copy); |
| 434 | 1466 } |
| 442 | 1467 |
| 1468 if (val->args) | |
| 434 | 1469 { |
| 1470 copy->args = val->args; | |
| 1471 copy->args->ref_count++; | |
| 1472 } | |
| 1473 } | |
| 1474 | |
| 442 | 1475 /* Remove %_ and convert %% to %. We can do this in-place because we |
| 1476 are always shortening, never lengthening, the string. */ | |
| 1477 void | |
| 1478 lw_remove_accelerator_spec (char *val) | |
| 1479 { | |
| 1480 char *foo = val, *bar = val; | |
| 1481 | |
| 1482 while (*bar) | |
| 1483 { | |
| 1484 if (*bar == '%' && *(bar+1) == '_') | |
| 1485 bar += 2; | |
| 1486 else if (*bar == '%' && *(bar+1) == '%') | |
| 1487 { | |
| 1488 *foo++ = *bar++; | |
| 1489 bar++; | |
| 1490 } | |
| 1491 else | |
| 1492 *foo++ = *bar++; | |
| 1493 } | |
| 1494 *foo = '\0'; | |
| 1495 } |