src/lib/ecore_x/xcb/ecore_xcb_dnd.c

   1 #include <string.h>
   2
   3 #include "Ecore.h"
   4 #include "ecore_xcb_private.h"
   5 #include "Ecore_X_Atoms.h"
   6
   7 EAPI int ECORE_X_EVENT_XDND_ENTER = 0;
   8 EAPI int ECORE_X_EVENT_XDND_POSITION = 0;
   9 EAPI int ECORE_X_EVENT_XDND_STATUS = 0;
  10 EAPI int ECORE_X_EVENT_XDND_LEAVE = 0;
  11 EAPI int ECORE_X_EVENT_XDND_DROP = 0;
  12 EAPI int ECORE_X_EVENT_XDND_FINISHED = 0;
  13
  14 static Ecore_X_DND_Source *_source = NULL;
  15 static Ecore_X_DND_Target *_target = NULL;
  16 static int _ecore_x_dnd_init_count = 0;
  17
  18 void
  19 _ecore_x_dnd_init(void)
  20 {
  21    if (!_ecore_x_dnd_init_count)
  22      {
  23         _source = calloc(1, sizeof(Ecore_X_DND_Source));
  24         _source->version = ECORE_X_DND_VERSION;
  25         _source->win = XCB_NONE;
  26         _source->dest = XCB_NONE;
  27         _source->state = ECORE_X_DND_SOURCE_IDLE;
  28         _source->prev.window = 0;
  29
  30         _target = calloc(1, sizeof(Ecore_X_DND_Target));
  31         _target->win = XCB_NONE;
  32         _target->source = XCB_NONE;
  33         _target->state = ECORE_X_DND_TARGET_IDLE;
  34
  35         ECORE_X_EVENT_XDND_ENTER = ecore_event_type_new();
  36         ECORE_X_EVENT_XDND_POSITION = ecore_event_type_new();
  37         ECORE_X_EVENT_XDND_STATUS = ecore_event_type_new();
  38         ECORE_X_EVENT_XDND_LEAVE = ecore_event_type_new();
  39         ECORE_X_EVENT_XDND_DROP = ecore_event_type_new();
  40         ECORE_X_EVENT_XDND_FINISHED = ecore_event_type_new();
  41      }
  42
  43    _ecore_x_dnd_init_count++;
  44 } /* _ecore_x_dnd_init */
  45
  46 void
  47 _ecore_x_dnd_shutdown(void)
  48 {
  49    _ecore_x_dnd_init_count--;
  50    if (_ecore_x_dnd_init_count > 0)
  51       return;
  52
  53    if (_source)
  54       free(_source);
  55
  56    _source = NULL;
  57
  58    if (_target)
  59       free(_target);
  60
  61    _target = NULL;
  62
  63    _ecore_x_dnd_init_count = 0;
  64 } /* _ecore_x_dnd_shutdown */
  65
  66 EAPI void
  67 ecore_x_dnd_aware_set(Ecore_X_Window window,
  68                       Eina_Bool      on)
  69 {
  70    Ecore_X_Atom prop_data = ECORE_X_DND_VERSION;
  71
  72    if (on)
  73       ecore_x_window_prop_property_set(window, ECORE_X_ATOM_XDND_AWARE,
  74                                        ECORE_X_ATOM_ATOM, 32, &prop_data, 1);
  75    else
  76       ecore_x_window_prop_property_del(window, ECORE_X_ATOM_XDND_AWARE);
  77 } /* ecore_x_dnd_aware_set */
  78
  79 /**
  80  * Sends the GetProperty request.
  81  * @param window Window whose properties are requested.
  82  */
  83 EAPI void
  84 ecore_x_dnd_version_get_prefetch(Ecore_X_Window window)
  85 {
  86    xcb_get_property_cookie_t cookie;
  87
  88    cookie = xcb_get_property_unchecked(_ecore_xcb_conn, 0,
  89                                        window ? window : ((xcb_screen_t *)_ecore_xcb_screen)->root,
  90                                        ECORE_X_ATOM_XDND_AWARE,
  91                                        ECORE_X_ATOM_ATOM,
  92                                        0, LONG_MAX);
  93    _ecore_xcb_cookie_cache(cookie.sequence);
  94 } /* ecore_x_dnd_version_get_prefetch */
  95
  96 /**
  97  * Gets the reply of the GetProperty request sent by ecore_x_dnd_version_get_prefetch().
  98  */
  99 EAPI void
 100 ecore_x_dnd_version_get_fetch(void)
 101 {
 102    xcb_get_property_cookie_t cookie;
 103    xcb_get_property_reply_t *reply;
 104
 105    cookie.sequence = _ecore_xcb_cookie_get();
 106    reply = xcb_get_property_reply(_ecore_xcb_conn, cookie, NULL);
 107    _ecore_xcb_reply_cache(reply);
 108 } /* ecore_x_dnd_version_get_fetch */
 109
 110 /**
 111  * Get the DnD version.
 112  * @param  window Unused.
 113  * @return        0 on failure, the version otherwise.
 114  *
 115  * Get the DnD version. Returns 0 on failure, the version otherwise.
 116  *
 117  * To use this function, you must call before, and in order,
 118  * ecore_x_dnd_version_get_prefetch(), which sends the GetProperty request,
 119  * then ecore_x_dnd_version_get_fetch(), which gets the reply.
 120  */
 121 EAPI int
 122 ecore_x_dnd_version_get(Ecore_X_Window window)
 123 {
 124    unsigned char *prop_data;
 125    int num;
 126
 127    if (ecore_x_window_prop_property_get(window, ECORE_X_ATOM_XDND_AWARE,
 128                                         ECORE_X_ATOM_ATOM, 32, &prop_data, &num))
 129      {
 130         int version = (int)*prop_data;
 131         free(prop_data);
 132         return version;
 133      }
 134    else
 135       return 0;
 136 } /* ecore_x_dnd_version_get */
 137
 138 /**
 139  * Sends the GetProperty request.
 140  * @param window Window whose properties are requested.
 141  */
 142 EAPI void
 143 ecore_x_dnd_type_get_prefetch(Ecore_X_Window window)
 144 {
 145    xcb_get_property_cookie_t cookie;
 146
 147    cookie = xcb_get_property_unchecked(_ecore_xcb_conn, 0,
 148                                        window ? window : ((xcb_screen_t *)_ecore_xcb_screen)->root,
 149                                        ECORE_X_ATOM_XDND_TYPE_LIST,
 150                                        ECORE_X_ATOM_ATOM,
 151                                        0, LONG_MAX);
 152    _ecore_xcb_cookie_cache(cookie.sequence);
 153 } /* ecore_x_dnd_type_get_prefetch */
 154
 155 /**
 156  * Gets the reply of the GetProperty request sent by ecore_x_dnd_type_get_prefetch().
 157  */
 158 EAPI void
 159 ecore_x_dnd_type_get_fetch(void)
 160 {
 161    xcb_get_property_cookie_t cookie;
 162    xcb_get_property_reply_t *reply;
 163
 164    cookie.sequence = _ecore_xcb_cookie_get();
 165    reply = xcb_get_property_reply(_ecore_xcb_conn, cookie, NULL);
 166    _ecore_xcb_reply_cache(reply);
 167 } /* ecore_x_dnd_type_get_fetch */
 168
 169 /* FIXME: round trip (InternAtomGet request) */
 170
 171 /**
 172  * Check if the type is set.
 173  * @param   window Unused.
 174  * @param   type   The type to check
 175  * @return         0 on failure, 1 otherwise.
 176  *
 177  * Check if the type is set. 0 on failure, 1 otherwise.
 178  *
 179  * To use this function, you must call before, and in order,
 180  * ecore_x_dnd_type_get_prefetch(), which sends the GetProperty request,
 181  * then ecore_x_dnd_type_get_fetch(), which gets the reply.
 182  */
 183 EAPI Eina_Bool
 184 ecore_x_dnd_type_isset(Ecore_X_Window window,
 185                        const char    *type)
 186 {
 187    xcb_intern_atom_cookie_t cookie;
 188    xcb_intern_atom_reply_t *reply;
 189    Ecore_X_Atom *atoms;
 190    unsigned char *data;
 191    int num;
 192    int i;
 193    uint8_t ret = 0;
 194
 195    cookie = xcb_intern_atom_unchecked(_ecore_xcb_conn, 0,
 196                                       strlen(type), type);
 197
 198    if (!ecore_x_window_prop_property_get(window, ECORE_X_ATOM_XDND_TYPE_LIST,
 199                                          ECORE_X_ATOM_ATOM, 32, &data, &num))
 200      {
 201         reply = xcb_intern_atom_reply(_ecore_xcb_conn, cookie, NULL);
 202         if (reply)
 203            free(reply);
 204
 205         return ret;
 206      }
 207
 208    reply = xcb_intern_atom_reply(_ecore_xcb_conn, cookie, NULL);
 209    if (!reply)
 210      {
 211         free(data);
 212         return 0;
 213      }
 214
 215    atoms = (Ecore_X_Atom *)data;
 216
 217    for (i = 0; i < num; ++i)
 218      {
 219         if (reply->atom == atoms[i])
 220           {
 221              ret = 1;
 222              break;
 223           }
 224      }
 225
 226    free(data);
 227    free(reply);
 228
 229    return ret;
 230 } /* ecore_x_dnd_type_isset */
 231
 232 /* FIXME: round trip (InternAtomGet request) */
 233
 234 /**
 235  * Set the type.
 236  * @param   window Unused.
 237  * @param   type   The type to set
 238  * @param   on     0 or non 0...
 239  *
 240  * Set the type.
 241  *
 242  * To use this function, you must call before, and in order,
 243  * ecore_x_dnd_type_get_prefetch(), which sends the GetProperty request,
 244  * then ecore_x_dnd_type_get_fetch(), which gets the reply.
 245  */
 246 EAPI void
 247 ecore_x_dnd_type_set(Ecore_X_Window window,
 248                      const char    *type,
 249                      Eina_Bool      on)
 250 {
 251    xcb_intern_atom_cookie_t cookie;
 252    xcb_intern_atom_reply_t *reply;
 253    Ecore_X_Atom *oldset = NULL;
 254    Ecore_X_Atom *newset = NULL;
 255    unsigned char *data = NULL;
 256    unsigned char *old_data = NULL;
 257    Ecore_X_Atom atom;
 258    int i, j = 0, num = 0;
 259
 260    cookie = xcb_intern_atom_unchecked(_ecore_xcb_conn, 0,
 261                                       strlen(type), type);
 262
 263    atom = ecore_x_atom_get(type);
 264    if (!ecore_x_window_prop_property_get(window, ECORE_X_ATOM_XDND_TYPE_LIST,
 265                                          ECORE_X_ATOM_ATOM,
 266                                          32, &old_data, &num))
 267      {
 268         reply = xcb_intern_atom_reply(_ecore_xcb_conn, cookie, NULL);
 269         if (reply)
 270            free(reply);
 271
 272         return;
 273      }
 274
 275    oldset = (Ecore_X_Atom *)old_data;
 276
 277    if (on)
 278      {
 279         if (ecore_x_dnd_type_isset(window, type))
 280           {
 281              free(old_data);
 282              reply = xcb_intern_atom_reply(_ecore_xcb_conn, cookie, NULL);
 283              if (reply)
 284                 free(reply);
 285
 286              return;
 287           }
 288
 289         data = calloc(num + 1, sizeof(Ecore_X_Atom));
 290         if (!data)
 291           {
 292              free(old_data);
 293              reply = xcb_intern_atom_reply(_ecore_xcb_conn, cookie, NULL);
 294              if (reply)
 295                 free(reply);
 296
 297              return;
 298           }
 299
 300         newset = (Ecore_X_Atom *)data;
 301
 302         for (i = 0; i < num; i++)
 303            newset[i + 1] = oldset[i];
 304         /* prepend the new type */
 305
 306         reply = xcb_intern_atom_reply(_ecore_xcb_conn, cookie, NULL);
 307         if (!reply)
 308           {
 309              free(old_data);
 310              return;
 311           }
 312
 313         newset[0] = reply->atom;
 314         free(reply);
 315
 316         ecore_x_window_prop_property_set(window,
 317                                          ECORE_X_ATOM_XDND_TYPE_LIST,
 318                                          ECORE_X_ATOM_ATOM,
 319                                          32, data, num + 1);
 320      }
 321    else
 322      {
 323         if (!ecore_x_dnd_type_isset(window, type))
 324           {
 325              free(old_data);
 326              return;
 327           }
 328
 329         newset = calloc(num - 1, sizeof(Ecore_X_Atom));
 330         if (!newset)
 331           {
 332              free(old_data);
 333              return;
 334           }
 335
 336         data = (unsigned char *)newset;
 337         for (i = 0; i < num; i++)
 338            if (oldset[i] != atom)
 339               newset[j++] = oldset[i];
 340
 341         ecore_x_window_prop_property_set(window,
 342                                          ECORE_X_ATOM_XDND_TYPE_LIST,
 343                                          ECORE_X_ATOM_ATOM,
 344                                          32, data, num - 1);
 345      }
 346
 347    free(oldset);
 348    free(newset);
 349 } /* ecore_x_dnd_type_set */
 350
 351 /* FIXME: round trips, but I don't think we can do much, here */
 352
 353 /**
 354  * Set the types.
 355  * @param   window Unused.
 356  * @param   types  The types to set
 357  * @param   num_types The number of types
 358  *
 359  * Set the types.
 360  *
 361  * To use this function, you must call before, and in order,
 362  * ecore_x_dnd_type_get_prefetch(), which sends the GetProperty request,
 363  * then ecore_x_dnd_type_get_fetch(), which gets the reply.
 364  */
 365 EAPI void
 366 ecore_x_dnd_types_set(Ecore_X_Window window,
 367                       const char   **types,
 368                       unsigned int   num_types)
 369 {
 370    Ecore_X_Atom *newset = NULL;
 371    void *data = NULL;
 372    uint32_t i;
 373
 374    if (!num_types)
 375      {
 376         ecore_x_window_prop_property_del(window, ECORE_X_ATOM_XDND_TYPE_LIST);
 377      }
 378    else
 379      {
 380         xcb_intern_atom_cookie_t *cookies;
 381         xcb_intern_atom_reply_t *reply;
 382
 383         cookies = (xcb_intern_atom_cookie_t *)malloc(sizeof(xcb_intern_atom_cookie_t));
 384         if (!cookies)
 385            return;
 386
 387         for (i = 0; i < num_types; i++)
 388            cookies[i] = xcb_intern_atom_unchecked(_ecore_xcb_conn, 0,
 389                                                   strlen(types[i]), types[i]);
 390         data = calloc(num_types, sizeof(Ecore_X_Atom));
 391         if (!data)
 392           {
 393              for (i = 0; i < num_types; i++)
 394                {
 395                   reply = xcb_intern_atom_reply(_ecore_xcb_conn, cookies[i], NULL);
 396                   if (reply)
 397                      free(reply);
 398                }
 399              free(cookies);
 400              return;
 401           }
 402
 403         newset = data;
 404         for (i = 0; i < num_types; i++)
 405           {
 406              reply = xcb_intern_atom_reply(_ecore_xcb_conn, cookies[i], NULL);
 407              if (reply)
 408                {
 409                   newset[i] = reply->atom;
 410                   free(reply);
 411                }
 412              else
 413                 newset[i] = XCB_NONE;
 414           }
 415         free(cookies);
 416         ecore_x_window_prop_property_set(window, ECORE_X_ATOM_XDND_TYPE_LIST,
 417                                          ECORE_X_ATOM_ATOM, 32, data, num_types);
 418         free(data);
 419      }
 420 } /* ecore_x_dnd_types_set */
 421
 422 Ecore_X_DND_Source *
 423 _ecore_x_dnd_source_get(void)
 424 {
 425    return _source;
 426 } /* _ecore_x_dnd_source_get */
 427
 428 Ecore_X_DND_Target *
 429 _ecore_x_dnd_target_get(void)
 430 {
 431    return _target;
 432 } /* _ecore_x_dnd_target_get */
 433
 434 /**
 435  * Sends the GetProperty request.
 436  * @param source Window whose properties are requested.
 437  */
 438 EAPI void
 439 ecore_x_dnd_begin_prefetch(Ecore_X_Window source)
 440 {
 441    xcb_get_property_cookie_t cookie;
 442
 443    cookie = xcb_get_property_unchecked(_ecore_xcb_conn, 0,
 444                                        source ? source : ((xcb_screen_t *)_ecore_xcb_screen)->root,
 445                                        ECORE_X_ATOM_XDND_AWARE,
 446                                        ECORE_X_ATOM_ATOM,
 447                                        0, LONG_MAX);
 448    _ecore_xcb_cookie_cache(cookie.sequence);
 449 } /* ecore_x_dnd_begin_prefetch */
 450
 451 /**
 452  * Gets the reply of the GetProperty request sent by ecore_x_dnd_begin_prefetch().
 453  */
 454 EAPI void
 455 ecore_x_dnd_begin_fetch(void)
 456 {
 457    xcb_get_property_cookie_t cookie;
 458    xcb_get_property_reply_t *reply;
 459
 460    cookie.sequence = _ecore_xcb_cookie_get();
 461    reply = xcb_get_property_reply(_ecore_xcb_conn, cookie, NULL);
 462    _ecore_xcb_reply_cache(reply);
 463 } /* ecore_x_dnd_begin_fetch */
 464
 465 /* FIXME: round trip */
 466
 467 /**
 468  * Begins the DnD.
 469  * @param  source Unused.
 470  * @param  data   The data.
 471  * @param  size   The size of the data.
 472  * @return        0 on failure, 1 otherwise.
 473  *
 474  * Begins the DnD. Returns 0 on failure, 1 otherwise.
 475  *
 476  * To use this function, you must call before, and in order,
 477  * ecore_x_dnd_begin_prefetch(), which sends the GetProperty request,
 478  * then ecore_x_dnd_begin_fetch(), which gets the reply.
 479  */
 480 EAPI Eina_Bool
 481 ecore_x_dnd_begin(Ecore_X_Window source,
 482                   unsigned char *data,
 483                   int            size)
 484 {
 485    ecore_x_selection_xdnd_prefetch();
 486    if (!ecore_x_dnd_version_get(source))
 487      {
 488         ecore_x_selection_xdnd_fetch();
 489         return 0;
 490      }
 491
 492    /* Take ownership of XdndSelection */
 493    ecore_x_selection_xdnd_prefetch();
 494    ecore_x_selection_xdnd_fetch();
 495    if (!ecore_x_selection_xdnd_set(source, data, size))
 496       return 0;
 497
 498    _source->win = source;
 499    ecore_x_window_ignore_set(_source->win, 1);
 500    _source->state = ECORE_X_DND_SOURCE_DRAGGING;
 501    _source->time = _ecore_xcb_event_last_time;
 502    _source->prev.window = 0;
 503
 504    /* Default Accepted Action: ask */
 505    _source->action = ECORE_X_ATOM_XDND_ACTION_COPY;
 506    _source->accepted_action = XCB_NONE;
 507    return 1;
 508 } /* ecore_x_dnd_begin */
 509
 510 EAPI Eina_Bool
 511 ecore_x_dnd_drop(void)
 512 {
 513    uint8_t status = 0;
 514
 515    if (_source->dest)
 516      {
 517         xcb_client_message_event_t ev;
 518
 519         ev.response_type = XCB_CLIENT_MESSAGE;
 520         ev.format = 32;
 521         ev.window = _source->dest;
 522
 523         if (_source->will_accept)
 524           {
 525              ev.type = ECORE_X_ATOM_XDND_DROP;
 526              ev.data.data32[0] = _source->win;
 527              ev.data.data32[1] = 0;
 528              ev.data.data32[2] = _source->time;
 529              xcb_send_event(_ecore_xcb_conn, 0, _source->dest, 0, (const char *)&ev);
 530              _source->state = ECORE_X_DND_SOURCE_DROPPED;
 531              status = 1;
 532           }
 533         else
 534           {
 535              ev.type = ECORE_X_ATOM_XDND_LEAVE;
 536              ev.data.data32[0] = _source->win;
 537              ev.data.data32[1] = 0;
 538              xcb_send_event(_ecore_xcb_conn, 0, _source->dest, 0, (const char *)&ev);
 539              _source->state = ECORE_X_DND_SOURCE_IDLE;
 540           }
 541      }
 542    else
 543      {
 544         /* Dropping on nothing */
 545         ecore_x_selection_xdnd_clear();
 546         _source->state = ECORE_X_DND_SOURCE_IDLE;
 547      }
 548
 549    ecore_x_window_ignore_set(_source->win, 0);
 550
 551    _source->prev.window = 0;
 552    _source->dest = XCB_NONE;
 553
 554    return status;
 555 } /* ecore_x_dnd_drop */
 556
 557 EAPI void
 558 ecore_x_dnd_send_status(Eina_Bool         will_accept,
 559                         Eina_Bool         suppress,
 560                         Ecore_X_Rectangle rectangle,
 561                         Ecore_X_Atom      action)
 562 {
 563    xcb_client_message_event_t ev;
 564
 565    if (_target->state == ECORE_X_DND_TARGET_IDLE)
 566       return;
 567
 568    _target->will_accept = will_accept;
 569
 570    ev.response_type = XCB_CLIENT_MESSAGE;
 571    ev.format = 32;
 572    ev.window = _target->source;
 573    ev.type = ECORE_X_ATOM_XDND_STATUS;
 574
 575    ev.data.data32[0] = _target->win;
 576    ev.data.data32[1] = 0;
 577    if (will_accept)
 578       ev.data.data32[1] |= 0x1UL;
 579
 580    if (!suppress)
 581       ev.data.data32[1] |= 0x2UL;
 582
 583    /* Set rectangle information */
 584    ev.data.data32[2] = rectangle.x;
 585    ev.data.data32[2] <<= 16;
 586    ev.data.data32[2] |= rectangle.y;
 587    ev.data.data32[3] = rectangle.width;
 588    ev.data.data32[3] <<= 16;
 589    ev.data.data32[3] |= rectangle.height;
 590
 591    if (will_accept)
 592      {
 593         ev.data.data32[4] = action;
 594         _target->accepted_action = action;
 595      }
 596    else
 597      {
 598         ev.data.data32[4] = XCB_NONE;
 599         _target->accepted_action = action;
 600      }
 601
 602    xcb_send_event(_ecore_xcb_conn, 0, _target->source, 0, (const char *)&ev);
 603 } /* ecore_x_dnd_send_status */
 604
 605 EAPI void
 606 ecore_x_dnd_send_finished(void)
 607 {
 608    xcb_client_message_event_t ev;
 609
 610    if (_target->state == ECORE_X_DND_TARGET_IDLE)
 611       return;
 612
 613    ev.response_type = XCB_CLIENT_MESSAGE;
 614    ev.format = 32;
 615    ev.window = _target->source;
 616    ev.type = ECORE_X_ATOM_XDND_FINISHED;
 617
 618    ev.data.data32[0] = _target->win;
 619    ev.data.data32[1] = 0;
 620    ev.data.data32[2] = 0;
 621    if (_target->will_accept)
 622      {
 623         ev.data.data32[1] |= 0x1UL;
 624         ev.data.data32[2] = _target->accepted_action;
 625      }
 626
 627    xcb_send_event(_ecore_xcb_conn, 0, _target->source, 0, (const char *)&ev);
 628
 629    _target->state = ECORE_X_DND_TARGET_IDLE;
 630 } /* ecore_x_dnd_send_finished */
 631
 632 void
 633 ecore_x_dnd_source_action_set(Ecore_X_Atom action)
 634 {
 635    _source->action = action;
 636    if (_source->prev.window)
 637       _ecore_x_dnd_drag(_source->prev.window, _source->prev.x, _source->prev.y);
 638 } /* ecore_x_dnd_source_action_set */
 639
 640 Ecore_X_Atom
 641 ecore_x_dnd_source_action_get(void)
 642 {
 643    return _source->action;
 644 } /* ecore_x_dnd_source_action_get */
 645
 646 void
 647 _ecore_x_dnd_drag(Ecore_X_Window root,
 648                   int            x,
 649                   int            y)
 650 {
 651    xcb_client_message_event_t ev;
 652    Ecore_X_Window win;
 653    Ecore_X_Window *skip;
 654    int num;
 655
 656    if (_source->state != ECORE_X_DND_SOURCE_DRAGGING)
 657       return;
 658
 659    ev.response_type = XCB_CLIENT_MESSAGE;
 660    ev.format = 32;
 661
 662    /* Attempt to find a DND-capable window under the cursor */
 663    skip = ecore_x_window_ignore_list(&num);
 664 //   win = ecore_x_window_at_xy_with_skip_get(x, y, skip, num);
 665    win = ecore_x_window_shadow_tree_at_xy_with_skip_get(root, x, y, skip, num);
 666    while (win)
 667      {
 668         xcb_query_tree_cookie_t cookie_tree;
 669         xcb_query_tree_reply_t *reply_tree;
 670
 671         ecore_x_dnd_version_get_prefetch(win);
 672         cookie_tree = xcb_query_tree_unchecked(_ecore_xcb_conn, win);
 673
 674         ecore_x_dnd_version_get_fetch();
 675         /* We found the correct window ? */
 676         if (ecore_x_dnd_version_get(win))
 677           {
 678              reply_tree = xcb_query_tree_reply(_ecore_xcb_conn, cookie_tree, NULL);
 679              if (reply_tree)
 680                 free(reply_tree);
 681
 682              break;
 683           }
 684
 685         reply_tree = xcb_query_tree_reply(_ecore_xcb_conn, cookie_tree, NULL);
 686         if (reply_tree)
 687           {
 688              win = reply_tree->parent;
 689              free(reply_tree);
 690           }
 691      }
 692
 693    /* Send XdndLeave to current destination window if we have left it */
 694    if ((_source->dest) && (win != _source->dest))
 695      {
 696         ev.window = _source->dest;
 697         ev.type = ECORE_X_ATOM_XDND_LEAVE;
 698         ev.data.data32[0] = _source->win;
 699         ev.data.data32[1] = 0;
 700
 701         xcb_send_event(_ecore_xcb_conn, 0, _source->dest, 0, (const char *)&ev);
 702         _source->suppress = 0;
 703      }
 704
 705    if (win)
 706      {
 707         int16_t x1;
 708         int16_t x2;
 709         int16_t y1;
 710         int16_t y2;
 711
 712         ecore_x_dnd_version_get_prefetch(win);
 713         ecore_x_dnd_type_get_prefetch(_source->win);
 714
 715         ecore_x_dnd_version_get_fetch();
 716         if (!ecore_x_dnd_version_get(win))
 717           {
 718              ecore_x_dnd_type_get_fetch();
 719              return;
 720           }
 721
 722         _source->version = MIN(ECORE_X_DND_VERSION,
 723                                ecore_x_dnd_version_get(win));
 724         if (win != _source->dest)
 725           {
 726              unsigned char *data;
 727              Ecore_X_Atom *types;
 728              int num;
 729              int i;
 730
 731              ecore_x_dnd_type_get_fetch();
 732              if (!ecore_x_window_prop_property_get(_source->win,
 733                                                    ECORE_X_ATOM_XDND_TYPE_LIST,
 734                                                    ECORE_X_ATOM_ATOM,
 735                                                    32, &data, &num))
 736                 return;
 737
 738              types = (Ecore_X_Atom *)data;
 739
 740              /* Entered new window, send XdndEnter */
 741              ev.window = win;
 742              ev.type = ECORE_X_ATOM_XDND_ENTER;
 743              ev.data.data32[0] = _source->win;
 744              ev.data.data32[1] = 0;
 745              if (num > 3)
 746                 ev.data.data32[1] |= 0x1UL;
 747              else
 748                 ev.data.data32[1] &= 0xfffffffeUL;
 749
 750              ev.data.data32[1] |= ((unsigned long)_source->version) << 24;
 751
 752              for (i = 2; i < 5; i++)
 753                 ev.data.data32[i] = 0;
 754              for (i = 0; i < MIN(num, 3); ++i)
 755                 ev.data.data32[i + 2] = types[i];
 756              free(data);
 757              xcb_send_event(_ecore_xcb_conn, 0, win, 0, (const char *)&ev);
 758              _source->await_status = 0;
 759              _source->will_accept = 0;
 760           }
 761         else
 762            ecore_x_dnd_type_get_fetch();
 763
 764         /* Determine if we're still in the rectangle from the last status */
 765         x1 = _source->rectangle.x;
 766         x2 = _source->rectangle.x + _source->rectangle.width;
 767         y1 = _source->rectangle.y;
 768         y2 = _source->rectangle.y + _source->rectangle.height;
 769
 770         if ((!_source->await_status) ||
 771             (!_source->suppress) ||
 772             ((x < x1) || (x > x2) || (y < y1) || (y > y2)))
 773           {
 774              ev.window = win;
 775              ev.type = ECORE_X_ATOM_XDND_POSITION;
 776              ev.data.data32[0] = _source->win;
 777              ev.data.data32[1] = 0; /* Reserved */
 778              ev.data.data32[2] = ((x << 16) & 0xffff0000) | (y & 0xffff);
 779              ev.data.data32[3] = _source->time; /* Version 1 */
 780              ev.data.data32[4] = _source->action; /* Version 2, Needs to be pre-set */
 781              xcb_send_event(_ecore_xcb_conn, 0, win, 0, (const char *)&ev);
 782
 783              _source->await_status = 1;
 784           }
 785      }
 786
 787    _source->prev.x = x;
 788    _source->prev.y = y;
 789    _source->prev.window = root;
 790    _source->dest = win;
 791 } /* _ecore_x_dnd_drag */
 792