mod_tiling/tiling.c

   1 /*
   2  * ion/mod_tiling/tiling.c
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2007.
   5  *
   6  * See the included file LICENSE for details.
   7  */
   8
   9 #include <string.h>
  10
  11 #include <libtu/objp.h>
  12 #include <libtu/minmax.h>
  13 #include <libtu/ptrlist.h>
  14 #include <libmainloop/defer.h>
  15 #include <libmainloop/signal.h>
  16
  17 #include <ioncore/common.h>
  18 #include <ioncore/rootwin.h>
  19 #include <ioncore/focus.h>
  20 #include <ioncore/global.h>
  21 #include <ioncore/region.h>
  22 #include <ioncore/manage.h>
  23 #include <ioncore/screen.h>
  24 #include <ioncore/names.h>
  25 #include <ioncore/saveload.h>
  26 #include <ioncore/attach.h>
  27 #include <ioncore/resize.h>
  28 #include <libextl/extl.h>
  29 #include <ioncore/regbind.h>
  30 #include <ioncore/extlconv.h>
  31 #include <ioncore/xwindow.h>
  32 #include <ioncore/navi.h>
  33 #include "placement.h"
  34 #include "tiling.h"
  35 #include "split.h"
  36 #include "splitfloat.h"
  37 #include "split-stdisp.h"
  38 #include "main.h"
  39
  40
  41
  42 static WTilingIterTmp tiling_iter_default_tmp;
  43
  44
  45 /*{{{ Some helper routines */
  46
  47
  48 static WSplitRegion *get_node_check(WTiling *ws, WRegion *reg)
  49 {
  50     WSplitRegion *node;
  51
  52     if(reg==NULL)
  53         return NULL;
  54
  55     node=splittree_node_of(reg);
  56
  57     if(node==NULL || REGION_MANAGER(reg)!=(WRegion*)ws)
  58         return NULL;
  59
  60     return node;
  61 }
  62
  63
  64 static bool check_node(WTiling *ws, WSplit *split)
  65 {
  66     if(split->parent)
  67         return check_node(ws, (WSplit*)split->parent);
  68
  69     if((split->ws_if_root!=(void*)ws)){
  70         warn(TR("Split not on workspace."));
  71         return FALSE;
  72     }
  73     return TRUE;
  74 }
  75
  76
  77 /*}}}*/
  78
  79
  80 /*{{{ Dynfun implementations */
  81
  82
  83 static void reparent_mgd(WRegion *sub, WWindow *par)
  84 {
  85     WFitParams subfp;
  86     subfp.g=REGION_GEOM(sub);
  87     subfp.mode=REGION_FIT_EXACT;
  88     if(!region_fitrep(sub, par, &subfp)){
  89         warn(TR("Error reparenting %s."), region_name(sub));
  90         region_detach_manager(sub);
  91     }
  92 }
  93
  94
  95 bool tiling_fitrep(WTiling *ws, WWindow *par, const WFitParams *fp)
  96 {
  97     WTilingIterTmp tmp;
  98     bool ok=FALSE;
  99
 100     if(par!=NULL){
 101         if(!region_same_rootwin((WRegion*)ws, (WRegion*)par))
 102             return FALSE;
 103
 104         region_unset_parent((WRegion*)ws);
 105
 106         XReparentWindow(ioncore_g.dpy, ws->dummywin,
 107                         par->win, fp->g.x, fp->g.y);
 108
 109         region_set_parent((WRegion*)ws, par);
 110
 111         if(ws->split_tree!=NULL)
 112             split_reparent(ws->split_tree, par);
 113     }
 114
 115     REGION_GEOM(ws)=fp->g;
 116
 117     if(ws->split_tree!=NULL){
 118         bool done=FALSE;
 119         if(fp->mode&REGION_FIT_ROTATE)
 120             ok=split_rotate_to(ws->split_tree, &(fp->g), fp->rotation);
 121         if(!ok)
 122             split_resize(ws->split_tree, &(fp->g), PRIMN_ANY, PRIMN_ANY);
 123     }
 124
 125     return TRUE;
 126 }
 127
 128
 129 void tiling_managed_rqgeom(WTiling *ws, WRegion *mgd,
 130                            const WRQGeomParams *rq,
 131                            WRectangle *geomret)
 132 {
 133     WSplitRegion *node=get_node_check(ws, mgd);
 134     if(node!=NULL && ws->split_tree!=NULL)
 135         splittree_rqgeom((WSplit*)node, rq->flags, &rq->geom, geomret);
 136 }
 137
 138
 139 void tiling_map(WTiling *ws)
 140 {
 141     REGION_MARK_MAPPED(ws);
 142     XMapWindow(ioncore_g.dpy, ws->dummywin);
 143
 144     if(ws->split_tree!=NULL)
 145         split_map(ws->split_tree);
 146 }
 147
 148
 149 void tiling_unmap(WTiling *ws)
 150 {
 151     REGION_MARK_UNMAPPED(ws);
 152     XUnmapWindow(ioncore_g.dpy, ws->dummywin);
 153
 154     if(ws->split_tree!=NULL)
 155         split_unmap(ws->split_tree);
 156 }
 157
 158
 159 void tiling_fallback_focus(WTiling *ws, bool warp)
 160 {
 161     region_finalise_focusing((WRegion*)ws, ws->dummywin, warp);
 162 }
 163
 164
 165 void tiling_do_set_focus(WTiling *ws, bool warp)
 166 {
 167     WRegion *sub=tiling_current(ws);
 168
 169     if(sub==NULL){
 170         tiling_fallback_focus(ws, warp);
 171         return;
 172     }
 173
 174     region_do_set_focus(sub, warp);
 175 }
 176
 177
 178 static WTimer *restack_timer=NULL;
 179
 180
 181 static void restack_handler(WTimer *tmr, Obj *obj)
 182 {
 183     if(obj!=NULL){
 184         WTiling *ws=(WTiling*)obj;
 185         split_restack(ws->split_tree, ws->dummywin, Above);
 186     }
 187 }
 188
 189
 190 bool tiling_managed_prepare_focus(WTiling *ws, WRegion *reg,
 191                                  int flags, WPrepareFocusResult *res)
 192 {
 193     WSplitRegion *node;
 194
 195     if(!region_prepare_focus((WRegion*)ws, flags, res))
 196         return FALSE;
 197
 198     node=get_node_check(ws, reg);
 199
 200     if(node!=NULL && node->split.parent!=NULL)
 201         splitinner_mark_current(node->split.parent, &(node->split));
 202
 203     /* WSplitSplit uses activity based stacking as required on WAutoWS,
 204      * so we must restack here.
 205      */
 206     if(ws->split_tree!=NULL){
 207         int rd=mod_tiling_raise_delay;
 208         bool use_timer=rd>0 && flags&REGION_GOTO_ENTERWINDOW;
 209
 210         if(use_timer){
 211             if(restack_timer!=NULL){
 212                 Obj *obj=restack_timer->objwatch.obj;
 213                 if(obj!=(Obj*)ws){
 214                     timer_reset(restack_timer);
 215                     restack_handler(restack_timer, obj);
 216                 }
 217             }else{
 218                 restack_timer=create_timer();
 219             }
 220         }
 221
 222         if(use_timer && restack_timer!=NULL){
 223             timer_set(restack_timer, rd, restack_handler, (Obj*)ws);
 224         }else{
 225             split_restack(ws->split_tree, ws->dummywin, Above);
 226         }
 227     }
 228
 229     res->reg=reg;
 230     res->flags=flags;
 231     return TRUE;
 232 }
 233
 234
 235
 236 void tiling_restack(WTiling *ws, Window other, int mode)
 237 {
 238     xwindow_restack(ws->dummywin, other, mode);
 239     if(ws->split_tree!=NULL)
 240         split_restack(ws->split_tree, ws->dummywin, Above);
 241 }
 242
 243
 244 void tiling_stacking(WTiling *ws, Window *bottomret, Window *topret)
 245 {
 246     Window sbottom=None, stop=None;
 247
 248     if(ws->split_tree!=None)
 249         split_stacking(ws->split_tree, &sbottom, &stop);
 250
 251     *bottomret=ws->dummywin;
 252     *topret=(stop!=None ? stop : ws->dummywin);
 253 }
 254
 255
 256 Window tiling_xwindow(const WTiling *ws)
 257 {
 258     return ws->dummywin;
 259 }
 260
 261
 262 /*}}}*/
 263
 264
 265 /*{{{ Status display support code */
 266
 267
 268 static bool regnodefilter(WSplit *split)
 269 {
 270     return OBJ_IS(split, WSplitRegion);
 271 }
 272
 273
 274 void tiling_unmanage_stdisp(WTiling *ws, bool permanent, bool nofocus)
 275 {
 276     WSplitRegion *tofocus=NULL;
 277     bool setfocus=FALSE;
 278     WRegion *od;
 279
 280     if(ws->stdispnode==NULL)
 281         return;
 282
 283     od=ws->stdispnode->regnode.reg;
 284
 285     if(od!=NULL){
 286         if(!nofocus && REGION_IS_ACTIVE(od) &&
 287            region_may_control_focus((WRegion*)ws)){
 288             setfocus=TRUE;
 289             tofocus=(WSplitRegion*)split_nextto((WSplit*)(ws->stdispnode),
 290                                                 PRIMN_ANY, PRIMN_ANY,
 291                                                 regnodefilter);
 292         }
 293         /* Reset node_of info here so tiling_managed_remove will not
 294          * remove the node.
 295          */
 296         splittree_set_node_of(od, NULL);
 297         tiling_do_managed_remove(ws, od);
 298     }
 299
 300     if(permanent){
 301         WSplit *node=(WSplit*)ws->stdispnode;
 302         ws->stdispnode=NULL;
 303         splittree_remove(node, TRUE);
 304     }
 305
 306     if(setfocus){
 307         if(tofocus!=NULL)
 308             region_set_focus(tofocus->reg);
 309         else
 310             tiling_fallback_focus(ws, FALSE);
 311     }
 312 }
 313
 314
 315 static void tiling_create_stdispnode(WTiling *ws, WRegion *stdisp,
 316                                     int corner, int orientation,
 317                                     bool fullsize)
 318 {
 319     int flags=REGION_RQGEOM_WEAK_X|REGION_RQGEOM_WEAK_Y;
 320     WRectangle *wg=&REGION_GEOM(ws), dg;
 321     WSplitST *stdispnode;
 322     WSplitSplit *split;
 323
 324     assert(ws->split_tree!=NULL);
 325
 326     if(orientation==REGION_ORIENTATION_HORIZONTAL){
 327         dg.x=wg->x;
 328         dg.w=wg->w;
 329         dg.h=0;
 330         dg.y=((corner==MPLEX_STDISP_BL || corner==MPLEX_STDISP_BR)
 331               ? wg->y+wg->h
 332               : 0);
 333     }else{
 334         dg.y=wg->y;
 335         dg.h=wg->h;
 336         dg.w=0;
 337         dg.x=((corner==MPLEX_STDISP_TR || corner==MPLEX_STDISP_BR)
 338               ? wg->x+wg->w
 339               : 0);
 340     }
 341
 342     stdispnode=create_splitst(&dg, stdisp);
 343
 344     if(stdispnode==NULL){
 345         warn(TR("Unable to create a node for status display."));
 346         return;
 347     }
 348
 349     stdispnode->corner=corner;
 350     stdispnode->orientation=orientation;
 351     stdispnode->fullsize=fullsize;
 352
 353     split=create_splitsplit(wg, (orientation==REGION_ORIENTATION_HORIZONTAL
 354                                  ? SPLIT_VERTICAL
 355                                  : SPLIT_HORIZONTAL));
 356
 357     if(split==NULL){
 358         warn(TR("Unable to create new split for status display."));
 359         stdispnode->regnode.reg=NULL;
 360         destroy_obj((Obj*)stdispnode);
 361         return;
 362     }
 363
 364     /* Set up new split tree */
 365     ((WSplit*)stdispnode)->parent=(WSplitInner*)split;
 366     ws->split_tree->parent=(WSplitInner*)split;
 367     ws->split_tree->ws_if_root=NULL;
 368
 369     if((orientation==REGION_ORIENTATION_HORIZONTAL &&
 370         (corner==MPLEX_STDISP_BL || corner==MPLEX_STDISP_BR)) ||
 371        (orientation==REGION_ORIENTATION_VERTICAL &&
 372         (corner==MPLEX_STDISP_TR || corner==MPLEX_STDISP_BR))){
 373         split->tl=ws->split_tree;
 374         split->br=(WSplit*)stdispnode;
 375         split->current=SPLIT_CURRENT_TL;
 376     }else{
 377         split->tl=(WSplit*)stdispnode;
 378         split->br=ws->split_tree;
 379         split->current=SPLIT_CURRENT_BR;
 380     }
 381
 382     ws->split_tree=(WSplit*)split;
 383     ((WSplit*)split)->ws_if_root=ws;
 384     ws->stdispnode=stdispnode;
 385 }
 386
 387
 388 void tiling_manage_stdisp(WTiling *ws, WRegion *stdisp,
 389                          const WMPlexSTDispInfo *di)
 390 {
 391     bool mcf=region_may_control_focus((WRegion*)ws);
 392     int flags=REGION_RQGEOM_WEAK_X|REGION_RQGEOM_WEAK_Y;
 393     int orientation=region_orientation(stdisp);
 394     bool act=FALSE;
 395     WRectangle dg, *stdg;
 396
 397     if(orientation!=REGION_ORIENTATION_VERTICAL /*&&
 398        orientation!=REGION_ORIENTATION_HORIZONTAL*/){
 399         orientation=REGION_ORIENTATION_HORIZONTAL;
 400     }
 401
 402     if(ws->stdispnode==NULL || ws->stdispnode->regnode.reg!=stdisp)
 403         region_detach_manager(stdisp);
 404
 405     /* Remove old stdisp if corner and orientation don't match.
 406      */
 407     if(ws->stdispnode!=NULL && (di->pos!=ws->stdispnode->corner ||
 408                                 orientation!=ws->stdispnode->orientation)){
 409         tiling_unmanage_stdisp(ws, TRUE, TRUE);
 410     }
 411
 412     if(ws->stdispnode==NULL){
 413         tiling_create_stdispnode(ws, stdisp, di->pos, orientation,
 414                                 di->fullsize);
 415         if(ws->stdispnode==NULL)
 416             return;
 417     }else{
 418         WRegion *od=ws->stdispnode->regnode.reg;
 419         if(od!=NULL){
 420             act=REGION_IS_ACTIVE(od);
 421             splittree_set_node_of(od, NULL);
 422             tiling_managed_remove(ws, od);
 423             assert(ws->stdispnode->regnode.reg==NULL);
 424         }
 425
 426         ws->stdispnode->fullsize=di->fullsize;
 427         ws->stdispnode->regnode.reg=stdisp;
 428         splittree_set_node_of(stdisp, &(ws->stdispnode->regnode));
 429     }
 430
 431     if(!tiling_managed_add(ws, stdisp)){
 432         tiling_unmanage_stdisp(ws, TRUE, TRUE);
 433         return;
 434     }
 435
 436     stdisp->flags|=REGION_SKIP_FOCUS;
 437
 438     dg=((WSplit*)(ws->stdispnode))->geom;
 439
 440     dg.h=stdisp_recommended_h(ws->stdispnode);
 441     dg.w=stdisp_recommended_w(ws->stdispnode);
 442
 443     splittree_rqgeom((WSplit*)(ws->stdispnode), flags, &dg, FALSE);
 444
 445     stdg=&(((WSplit*)ws->stdispnode)->geom);
 446
 447     if(stdisp->geom.x!=stdg->x || stdisp->geom.y!=stdg->y ||
 448        stdisp->geom.w!=stdg->w || stdisp->geom.h!=stdg->h){
 449         region_fit(stdisp, stdg, REGION_FIT_EXACT);
 450     }
 451
 452     /* Restack to ensure the split tree is stacked in the expected order. */
 453     if(ws->split_tree!=NULL)
 454         split_restack(ws->split_tree, ws->dummywin, Above);
 455
 456     if(mcf && act)
 457         region_set_focus(stdisp);
 458 }
 459
 460
 461 /*}}}*/
 462
 463
 464 /*{{{ Create/destroy */
 465
 466
 467 bool tiling_managed_add_default(WTiling *ws, WRegion *reg)
 468 {
 469     Window bottom=None, top=None;
 470     WFrame *frame;
 471
 472     if(TILING_STDISP_OF(ws)!=reg){
 473         if(!ptrlist_insert_last(&(ws->managed_list), reg))
 474             return FALSE;
 475     }
 476
 477     region_set_manager(reg, (WRegion*)ws);
 478
 479     frame=OBJ_CAST(reg, WFrame);
 480     if(frame!=NULL){
 481         if(framemode_unalt(frame_mode(frame))==FRAME_MODE_TILED)
 482             frame_set_mode(frame, FRAME_MODE_TILED);
 483     }
 484
 485     if(REGION_IS_MAPPED(ws))
 486         region_map(reg);
 487
 488     if(region_may_control_focus((WRegion*)ws)){
 489         WRegion *curr=tiling_current(ws);
 490         if(curr==NULL || !REGION_IS_ACTIVE(curr))
 491             region_warp(reg);
 492     }
 493
 494     return TRUE;
 495 }
 496
 497
 498 bool tiling_managed_add(WTiling *ws, WRegion *reg)
 499 {
 500     bool ret=FALSE;
 501     CALL_DYN_RET(ret, bool, tiling_managed_add, ws, (ws, reg));
 502     return ret;
 503 }
 504
 505
 506 bool tiling_do_attach_initial(WTiling *ws, WRegion *reg)
 507 {
 508     assert(ws->split_tree==NULL);
 509
 510     ws->split_tree=(WSplit*)create_splitregion(&REGION_GEOM(reg), reg);
 511     if(ws->split_tree==NULL)
 512         return FALSE;
 513
 514     ws->split_tree->ws_if_root=ws;
 515
 516     if(!tiling_managed_add(ws, reg)){
 517         destroy_obj((Obj*)ws->split_tree);
 518         ws->split_tree=NULL;
 519         return FALSE;
 520     }
 521
 522     return TRUE;
 523 }
 524
 525
 526 static WRegion *create_frame_tiling(WWindow *parent, const WFitParams *fp)
 527 {
 528     return (WRegion*)create_frame(parent, fp, FRAME_MODE_TILED);
 529 }
 530
 531
 532 bool tiling_init(WTiling *ws, WWindow *parent, const WFitParams *fp,
 533                 WRegionSimpleCreateFn *create_frame_fn, bool ci)
 534 {
 535     ws->split_tree=NULL;
 536     ws->create_frame_fn=(create_frame_fn
 537                          ? create_frame_fn
 538                          : create_frame_tiling);
 539     ws->stdispnode=NULL;
 540     ws->managed_list=NULL;
 541     ws->batchop=FALSE;
 542
 543     ws->dummywin=XCreateWindow(ioncore_g.dpy, parent->win,
 544                                 fp->g.x, fp->g.y, 1, 1, 0,
 545                                 CopyFromParent, InputOnly,
 546                                 CopyFromParent, 0, NULL);
 547     if(ws->dummywin==None)
 548         return FALSE;
 549
 550     region_init(&(ws->reg), parent, fp);
 551
 552     ws->reg.flags|=(REGION_GRAB_ON_PARENT|
 553                     REGION_PLEASE_WARP);
 554
 555     if(ci){
 556         WRegionAttachData data;
 557         WRegion *res;
 558
 559         data.type=REGION_ATTACH_NEW;
 560         data.u.n.fn=(WRegionCreateFn*)ws->create_frame_fn;
 561         data.u.n.param=NULL;
 562
 563         res=region_attach_helper((WRegion*)ws, parent, fp,
 564                                  (WRegionDoAttachFn*)tiling_do_attach_initial,
 565                                  NULL, &data);
 566
 567         if(res==NULL){
 568             XDestroyWindow(ioncore_g.dpy, ws->dummywin);
 569             return FALSE;
 570         }
 571     }
 572
 573     XSelectInput(ioncore_g.dpy, ws->dummywin,
 574                  FocusChangeMask|KeyPressMask|KeyReleaseMask|
 575                  ButtonPressMask|ButtonReleaseMask);
 576     XSaveContext(ioncore_g.dpy, ws->dummywin, ioncore_g.win_context,
 577                  (XPointer)ws);
 578
 579     region_register(&(ws->reg));
 580     region_add_bindmap((WRegion*)ws, mod_tiling_tiling_bindmap);
 581
 582     return TRUE;
 583 }
 584
 585
 586 WTiling *create_tiling(WWindow *parent, const WFitParams *fp,
 587                      WRegionSimpleCreateFn *create_frame_fn, bool ci)
 588 {
 589     CREATEOBJ_IMPL(WTiling, tiling, (p, parent, fp, create_frame_fn, ci));
 590 }
 591
 592
 593 WTiling *create_tiling_simple(WWindow *parent, const WFitParams *fp)
 594 {
 595     return create_tiling(parent, fp, NULL, TRUE);
 596 }
 597
 598
 599 void tiling_deinit(WTiling *ws)
 600 {
 601     WRegion *reg;
 602     WTilingIterTmp tmp;
 603     WMPlex *remanage_mplex=NULL;
 604
 605     tiling_unmanage_stdisp(ws, FALSE, TRUE);
 606
 607     FOR_ALL_MANAGED_BY_TILING(reg, ws, tmp){
 608         destroy_obj((Obj*)reg);
 609     }
 610
 611     FOR_ALL_MANAGED_BY_TILING(reg, ws, tmp){
 612         assert(FALSE);
 613     }
 614
 615     if(ws->split_tree!=NULL)
 616         destroy_obj((Obj*)(ws->split_tree));
 617
 618     XDeleteContext(ioncore_g.dpy, ws->dummywin, ioncore_g.win_context);
 619     XDestroyWindow(ioncore_g.dpy, ws->dummywin);
 620     ws->dummywin=None;
 621
 622     region_deinit(&(ws->reg));
 623 }
 624
 625
 626 WRegion *tiling_managed_disposeroot(WTiling *ws, WRegion *reg)
 627 {
 628     WTilingIterTmp tmp;
 629     WRegion *mgd;
 630
 631     if(ws->batchop)
 632         return reg;
 633
 634     FOR_ALL_MANAGED_BY_TILING(mgd, ws, tmp){
 635         if(mgd!=TILING_STDISP_OF(ws) && mgd!=reg)
 636             return reg;
 637     }
 638
 639     return region_disposeroot((WRegion*)ws);
 640 }
 641
 642
 643 bool tiling_rescue_clientwins(WTiling *ws, WRescueInfo *info)
 644 {
 645     WTilingIterTmp tmp;
 646
 647     ptrlist_iter_init(&tmp, ws->managed_list);
 648
 649     return region_rescue_some_clientwins((WRegion*)ws, info,
 650                                          (WRegionIterator*)ptrlist_iter,
 651                                          &tmp);
 652 }
 653
 654
 655 void tiling_do_managed_remove(WTiling *ws, WRegion *reg)
 656 {
 657     if(TILING_STDISP_OF(ws)==reg){
 658         ws->stdispnode->regnode.reg=NULL;
 659     }else{
 660         ptrlist_remove(&(ws->managed_list), reg);
 661     }
 662
 663     region_unset_manager(reg, (WRegion*)ws);
 664     splittree_set_node_of(reg, NULL);
 665 }
 666
 667
 668 static bool nostdispfilter(WSplit *node)
 669 {
 670     return (OBJ_IS(node, WSplitRegion) && !OBJ_IS(node, WSplitST));
 671 }
 672
 673
 674 void tiling_managed_remove(WTiling *ws, WRegion *reg)
 675 {
 676     bool act=REGION_IS_ACTIVE(reg);
 677     bool mcf=region_may_control_focus((WRegion*)ws);
 678     WSplitRegion *node=get_node_check(ws, reg);
 679     bool norestore=(OBJ_IS_BEING_DESTROYED(ws) || ws->batchop);
 680     WRegion *other=NULL;
 681
 682     if(!norestore)
 683         other=tiling_do_navi_next(ws, reg, REGION_NAVI_ANY, TRUE, FALSE);
 684
 685     tiling_do_managed_remove(ws, reg);
 686
 687     if(node==(WSplitRegion*)(ws->stdispnode))
 688         ws->stdispnode=NULL;
 689
 690     if(node!=NULL){
 691         bool reused=FALSE;
 692
 693         if(other==NULL && !norestore){
 694             WWindow *par=REGION_PARENT(ws);
 695             WFitParams fp;
 696
 697             assert(par!=NULL);
 698
 699             fp.g=node->split.geom;
 700             fp.mode=REGION_FIT_EXACT;
 701
 702             other=(ws->create_frame_fn)(par, &fp);
 703
 704             if(other!=NULL){
 705                 node->reg=other;
 706                 splittree_set_node_of(other, node);
 707                 tiling_managed_add(ws, other);
 708                 reused=TRUE;
 709             }else{
 710                 warn(TR("Tiling in useless state."));
 711             }
 712         }
 713
 714         if(!reused)
 715             splittree_remove((WSplit*)node, (!norestore && other!=NULL));
 716     }
 717
 718     if(!norestore && other!=NULL && act && mcf)
 719         region_warp(other);
 720 }
 721
 722
 723 static bool mplexfilter(WSplit *node)
 724 {
 725     WSplitRegion *regnode=OBJ_CAST(node, WSplitRegion);
 726
 727     return (regnode!=NULL && regnode->reg!=NULL &&
 728             OBJ_IS(regnode->reg, WMPlex));
 729 }
 730
 731
 732 static WPHolder *find_ph_result=NULL;
 733 static WRegion *find_ph_param=NULL;
 734
 735
 736 static bool find_ph(WSplit *split)
 737 {
 738     WSplitRegion *sr=OBJ_CAST(split, WSplitRegion);
 739
 740     assert(find_ph_result==NULL);
 741
 742     if(sr==NULL || sr->reg==NULL)
 743         return FALSE;
 744
 745     find_ph_result=region_get_rescue_pholder_for(sr->reg, find_ph_param);
 746
 747     return (find_ph_result!=NULL);
 748 }
 749
 750
 751 WPHolder *tiling_get_rescue_pholder_for(WTiling *ws, WRegion *mgd)
 752 {
 753     WSplit *node=(WSplit*)get_node_check(ws, mgd);
 754     WPHolder *ph;
 755
 756     find_ph_result=NULL;
 757     find_ph_param=mgd;
 758
 759     if(node==NULL){
 760         if(ws->split_tree!=NULL){
 761             split_current_todir(ws->split_tree, PRIMN_ANY, PRIMN_ANY,
 762                                 find_ph);
 763         }
 764     }else{
 765         while(node!=NULL){
 766             split_nextto(node, PRIMN_ANY, PRIMN_ANY, find_ph);
 767             if(find_ph_result!=NULL)
 768                 break;
 769             node=(WSplit*)node->parent;
 770         }
 771     }
 772
 773     ph=find_ph_result;
 774     find_ph_result=NULL;
 775     find_ph_param=NULL;
 776
 777     return ph;
 778 }
 779
 780
 781 /*}}}*/
 782
 783
 784 /*{{{ Navigation */
 785
 786
 787 static void navi_to_primn(WRegionNavi nh, WPrimn *hprimn, WPrimn *vprimn,
 788                           WPrimn choice)
 789 {
 790     /* choice should be PRIMN_ANY or PRIMN_NONE */
 791
 792     switch(nh){
 793     case REGION_NAVI_BEG:
 794         *vprimn=PRIMN_TL;
 795         *hprimn=PRIMN_TL;
 796         break;
 797
 798     case REGION_NAVI_END:
 799         *vprimn=PRIMN_BR;
 800         *hprimn=PRIMN_BR;
 801         break;
 802
 803     case REGION_NAVI_LEFT:
 804         *hprimn=PRIMN_TL;
 805         *vprimn=choice;
 806         break;
 807
 808     case REGION_NAVI_RIGHT:
 809         *hprimn=PRIMN_BR;
 810         *vprimn=choice;
 811         break;
 812
 813     case REGION_NAVI_TOP:
 814         *hprimn=choice;
 815         *vprimn=PRIMN_TL;
 816         break;
 817
 818     case REGION_NAVI_BOTTOM:
 819         *hprimn=choice;
 820         *vprimn=PRIMN_BR;
 821         break;
 822
 823     default:
 824     case REGION_NAVI_ANY:
 825         *hprimn=PRIMN_ANY;
 826         *vprimn=PRIMN_ANY;
 827         break;
 828     }
 829 }
 830
 831
 832 static WRegion *node_reg(WSplit *node)
 833 {
 834     WSplitRegion *rnode=OBJ_CAST(node, WSplitRegion);
 835     return (rnode!=NULL ? rnode->reg : NULL);
 836 }
 837
 838
 839 WRegion *tiling_do_navi_next(WTiling *ws, WRegion *reg,
 840                              WRegionNavi nh, bool nowrap,
 841                              bool any)
 842 {
 843     WSplitFilter *filter=(any ? NULL : nostdispfilter);
 844     WPrimn hprimn, vprimn;
 845     WRegion *nxt=NULL;
 846
 847     navi_to_primn(nh, &hprimn, &vprimn, PRIMN_NONE);
 848
 849     if(reg==NULL)
 850         reg=tiling_current(ws);
 851
 852     if(reg!=NULL){
 853         WSplitRegion *node=get_node_check(ws, reg);
 854         if(node!=NULL){
 855             nxt=node_reg(split_nextto((WSplit*)node, hprimn, vprimn,
 856                                       filter));
 857         }
 858     }
 859
 860     if(nxt==NULL && !nowrap){
 861         nxt=node_reg(split_current_todir(ws->split_tree,
 862                                          primn_none2any(primn_invert(hprimn)),
 863                                          primn_none2any(primn_invert(vprimn)),
 864                                          filter));
 865     }
 866
 867     return nxt;
 868 }
 869
 870
 871 WRegion *tiling_do_navi_first(WTiling *ws, WRegionNavi nh, bool any)
 872 {
 873     WSplitFilter *filter=(any ? NULL : nostdispfilter);
 874     WPrimn hprimn, vprimn;
 875
 876     navi_to_primn(nh, &hprimn, &vprimn, PRIMN_ANY);
 877
 878     return node_reg(split_current_todir(ws->split_tree,
 879                                         hprimn, vprimn, filter));
 880 }
 881
 882
 883 WRegion *tiling_navi_next(WTiling *ws, WRegion *reg,
 884                           WRegionNavi nh, WRegionNaviData *data)
 885 {
 886     WRegion *nxt=tiling_do_navi_next(ws, reg, nh, TRUE, FALSE);
 887
 888     return region_navi_cont(&ws->reg, nxt, data);
 889 }
 890
 891
 892 WRegion *tiling_navi_first(WTiling *ws, WRegionNavi nh,
 893                            WRegionNaviData *data)
 894 {
 895     WRegion *reg=tiling_do_navi_first(ws, nh, FALSE);
 896
 897     return region_navi_cont(&ws->reg, reg, data);
 898 }
 899
 900
 901 /*}}}*/
 902
 903
 904 /*{{{ Split/unsplit */
 905
 906
 907 static bool get_split_dir_primn(const char *str, int *dir, int *primn)
 908 {
 909     WPrimn hprimn, vprimn;
 910     WRegionNavi nh;
 911
 912     if(!ioncore_string_to_navi(str, &nh))
 913         return FALSE;
 914
 915     navi_to_primn(nh, &hprimn, &vprimn, PRIMN_NONE);
 916
 917     if(hprimn==PRIMN_NONE){
 918         *dir=SPLIT_VERTICAL;
 919         *primn=vprimn;
 920     }else if(vprimn==PRIMN_NONE){
 921         *dir=SPLIT_HORIZONTAL;
 922         *primn=hprimn;
 923     }else{
 924         warn(TR("Invalid direction"));
 925         return FALSE;
 926     }
 927
 928     return TRUE;
 929 }
 930
 931
 932 static bool get_split_dir_primn_float(const char *str, int *dir, int *primn,
 933                                       bool *floating)
 934 {
 935     if(strncmp(str, "floating:", 9)==0){
 936         *floating=TRUE;
 937         return get_split_dir_primn(str+9, dir, primn);
 938     }else{
 939         *floating=FALSE;
 940         return get_split_dir_primn(str, dir, primn);
 941     }
 942 }
 943
 944
 945 #define SPLIT_MINS 16 /* totally arbitrary */
 946
 947
 948 static WFrame *tiling_do_split(WTiling *ws, WSplit *node,
 949                               const char *dirstr, int minw, int minh)
 950 {
 951     int dir, primn, mins;
 952     bool floating=FALSE;
 953     WFrame *newframe;
 954     WSplitRegion *nnode;
 955
 956     if(node==NULL || ws->split_tree==NULL){
 957         warn(TR("Invalid node."));
 958         return NULL;
 959     }
 960
 961     if(!get_split_dir_primn_float(dirstr, &dir, &primn, &floating))
 962         return NULL;
 963
 964     mins=(dir==SPLIT_VERTICAL ? minh : minw);
 965
 966     if(!floating){
 967         nnode=splittree_split(node, dir, primn, mins,
 968                               ws->create_frame_fn,
 969                               REGION_PARENT(ws));
 970     }else{
 971         nnode=splittree_split_floating(node, dir, primn, mins,
 972                                        ws->create_frame_fn, ws);
 973     }
 974
 975     if(nnode==NULL){
 976         warn(TR("Unable to split."));
 977         return NULL;
 978     }
 979
 980     /* We must restack here to ensure the split tree is stacked in the
 981      * expected order.
 982      */
 983     if(ws->split_tree!=NULL)
 984         split_restack(ws->split_tree, ws->dummywin, Above);
 985
 986     newframe=OBJ_CAST(nnode->reg, WFrame);
 987     assert(newframe!=NULL);
 988
 989     if(!tiling_managed_add(ws, nnode->reg)){
 990         nnode->reg=NULL;
 991         destroy_obj((Obj*)nnode);
 992         destroy_obj((Obj*)newframe);
 993         return NULL;
 994     }
 995
 996     return newframe;
 997 }
 998
 999
1000 /*EXTL_DOC
1001  * Create a new frame on \var{ws} \codestr{above}, \codestr{below}
1002  * \codestr{left} of, or \codestr{right} of \var{node} as indicated
1003  *  by \var{dirstr}. If \var{dirstr} is  prefixed with
1004  * \codestr{floating:} a floating split is created.
1005  */
1006 EXTL_EXPORT_MEMBER
1007 WFrame *tiling_split(WTiling *ws, WSplit *node, const char *dirstr)
1008 {
1009     if(!check_node(ws, node))
1010         return NULL;
1011
1012     return tiling_do_split(ws, node, dirstr,
1013                           SPLIT_MINS, SPLIT_MINS);
1014 }
1015
1016
1017 /*EXTL_DOC
1018  * Same as \fnref{WTiling.split} at the root of the split tree.
1019  */
1020 EXTL_EXPORT_MEMBER
1021 WFrame *tiling_split_top(WTiling *ws, const char *dirstr)
1022 {
1023     return tiling_do_split(ws, ws->split_tree, dirstr,
1024                           SPLIT_MINS, SPLIT_MINS);
1025 }
1026
1027
1028 /*EXTL_DOC
1029  * Split \var{frame} creating a new frame to direction \var{dirstr}
1030  * (one of \codestr{left}, \codestr{right}, \codestr{top} or
1031  * \codestr{bottom}) of \var{frame}.
1032  * If \var{attach_current} is set, the region currently displayed in
1033  * \var{frame}, if any, is moved to thenew frame.
1034  * If \var{dirstr} is prefixed with \codestr{floating:}, a floating
1035  * split is created.
1036  */
1037 EXTL_EXPORT_MEMBER
1038 WFrame *tiling_split_at(WTiling *ws, WFrame *frame, const char *dirstr,
1039                        bool attach_current)
1040 {
1041     WRegion *curr;
1042     WSplitRegion *node;
1043     WFrame *newframe;
1044
1045     if(frame==NULL)
1046         return NULL;
1047
1048     node=get_node_check(ws, (WRegion*)frame);
1049
1050     newframe=tiling_do_split(ws, (WSplit*)node, dirstr,
1051                             region_min_w((WRegion*)frame),
1052                             region_min_h((WRegion*)frame));
1053
1054     if(newframe==NULL)
1055         return NULL;
1056
1057     curr=mplex_mx_current(&(frame->mplex));
1058
1059     if(attach_current && curr!=NULL)
1060         mplex_attach_simple(&(newframe->mplex), curr, MPLEX_ATTACH_SWITCHTO);
1061
1062     if(region_may_control_focus((WRegion*)frame))
1063         region_goto((WRegion*)newframe);
1064
1065     return newframe;
1066 }
1067
1068
1069 /*EXTL_DOC
1070  * Try to relocate regions managed by \var{reg} to another frame
1071  * and, if possible, destroy it.
1072  */
1073 EXTL_EXPORT_MEMBER
1074 void tiling_unsplit_at(WTiling *ws, WRegion *reg)
1075 {
1076     WPHolder *ph;
1077
1078     if(reg==NULL || REGION_MANAGER(reg)!=(WRegion*)ws)
1079         return;
1080
1081     ph=region_get_rescue_pholder_for((WRegion*)ws, reg);
1082
1083     if(ph!=NULL){
1084         region_rescue(reg, ph, REGION_RESCUE_NODEEP|REGION_RESCUE_PHFLAGS_OK);
1085         destroy_obj((Obj*)ph);
1086     }
1087
1088     region_defer_rqdispose(reg);
1089 }
1090
1091
1092 /*}}}*/
1093
1094
1095 /*{{{ Navigation etc. exports */
1096
1097
1098 WRegion *tiling_current(WTiling *ws)
1099 {
1100     WSplitRegion *node=NULL;
1101     if(ws->split_tree!=NULL){
1102         node=(WSplitRegion*)split_current_todir(ws->split_tree,
1103                                                 PRIMN_ANY, PRIMN_ANY, NULL);
1104     }
1105     return (node ? node->reg : NULL);
1106 }
1107
1108
1109 /*EXTL_DOC
1110  * Iterate over managed regions of \var{ws} until \var{iterfn} returns
1111  * \code{false}.
1112  * The function itself returns \code{true} if it reaches the end of list
1113  * without this happening.
1114  */
1115 EXTL_SAFE
1116 EXTL_EXPORT_MEMBER
1117 bool tiling_managed_i(WTiling *ws, ExtlFn iterfn)
1118 {
1119     PtrListIterTmp tmp;
1120
1121     ptrlist_iter_init(&tmp, ws->managed_list);
1122
1123     return extl_iter_objlist_(iterfn, (ObjIterator*)ptrlist_iter, &tmp);
1124 }
1125
1126
1127 /*EXTL_DOC
1128  * Returns the root of the split tree.
1129  */
1130 EXTL_SAFE
1131 EXTL_EXPORT_MEMBER
1132 WSplit *tiling_split_tree(WTiling *ws)
1133 {
1134     return ws->split_tree;
1135 }
1136
1137
1138 /*EXTL_DOC
1139  * Return the most previously active region next to \var{reg} in
1140  * direction \var{dirstr} (\codestr{left}, \codestr{right}, \codestr{up},
1141  * or \codestr{down}). The region \var{reg}
1142  * must be managed by \var{ws}. If \var{any} is not set, the status display
1143  * is not considered.
1144  */
1145 EXTL_SAFE
1146 EXTL_EXPORT_MEMBER
1147 WRegion *tiling_nextto(WTiling *ws, WRegion *reg, const char *dirstr,
1148                        bool any)
1149 {
1150     WRegionNavi nh;
1151
1152     if(!ioncore_string_to_navi(dirstr, &nh))
1153         return NULL;
1154
1155     return tiling_do_navi_next(ws, reg, nh, FALSE, any);
1156 }
1157
1158
1159 /*EXTL_DOC
1160  * Return the most previously active region on \var{ws} with no
1161  * other regions next to it in  direction \var{dirstr}
1162  * (\codestr{left}, \codestr{right}, \codestr{up}, or \codestr{down}).
1163  * If \var{any} is not set, the status display is not considered.
1164  */
1165 EXTL_SAFE
1166 EXTL_EXPORT_MEMBER
1167 WRegion *tiling_farthest(WTiling *ws, const char *dirstr, bool any)
1168 {
1169     WRegionNavi nh;
1170
1171     if(!ioncore_string_to_navi(dirstr, &nh))
1172         return NULL;
1173
1174     return tiling_do_navi_first(ws, nh, any);
1175 }
1176
1177
1178 /*EXTL_DOC
1179  * For region \var{reg} managed by \var{ws} return the \type{WSplit}
1180  * a leaf of which \var{reg} is.
1181  */
1182 EXTL_SAFE
1183 EXTL_EXPORT_MEMBER
1184 WSplitRegion *tiling_node_of(WTiling *ws, WRegion *reg)
1185 {
1186     if(reg==NULL){
1187         warn(TR("Nil parameter."));
1188         return NULL;
1189     }
1190
1191     if(REGION_MANAGER(reg)!=(WRegion*)ws){
1192         warn(TR("Manager doesn't match."));
1193         return NULL;
1194     }
1195
1196     return splittree_node_of(reg);
1197 }
1198
1199
1200 /*}}}*/
1201
1202
1203 /*{{{ Flip and transpose */
1204
1205
1206 static WSplitSplit *get_at_split(WTiling *ws, WRegion *reg)
1207 {
1208     WSplit *node;
1209     WSplitSplit *split;
1210
1211     if(reg==NULL){
1212         split=OBJ_CAST(ws->split_tree, WSplitSplit);
1213         if(split==NULL)
1214             return NULL;
1215         else if(split->br==(WSplit*)ws->stdispnode)
1216             return OBJ_CAST(split->tl, WSplitSplit);
1217         else if(split->tl==(WSplit*)ws->stdispnode)
1218             return OBJ_CAST(split->br, WSplitSplit);
1219         else
1220             return split;
1221     }
1222
1223     node=(WSplit*)get_node_check(ws, reg);
1224
1225     if(node==NULL)
1226         return NULL;
1227
1228     if(node==(WSplit*)ws->stdispnode){
1229         warn(TR("The status display is not a valid parameter for "
1230                 "this routine."));
1231         return NULL;
1232     }
1233
1234     split=OBJ_CAST(node->parent, WSplitSplit);
1235
1236     if(split!=NULL && (split->tl==(WSplit*)ws->stdispnode ||
1237                        split->br==(WSplit*)ws->stdispnode)){
1238         split=OBJ_CAST(((WSplit*)split)->parent, WSplitSplit);
1239     }
1240
1241     return split;
1242 }
1243
1244
1245 /*EXTL_DOC
1246  * Flip \var{ws} at \var{reg} or root if nil.
1247  */
1248 EXTL_EXPORT_MEMBER
1249 bool iowns_flip_at(WTiling *ws, WRegion *reg)
1250 {
1251     WSplitSplit *split=get_at_split(ws, reg);
1252
1253     if(split==NULL){
1254         return FALSE;
1255     }else{
1256         splitsplit_flip(split);
1257         return TRUE;
1258     }
1259 }
1260
1261
1262 /*EXTL_DOC
1263  * Transpose \var{ws} at \var{reg} or root if nil.
1264  */
1265 EXTL_EXPORT_MEMBER
1266 bool iowns_transpose_at(WTiling *ws, WRegion *reg)
1267 {
1268     WSplitSplit *split=get_at_split(ws, reg);
1269
1270     if(split==NULL){
1271         return FALSE;
1272     }else{
1273         split_transpose((WSplit*)split);
1274         return TRUE;
1275     }
1276 }
1277
1278
1279 /*}}}*/
1280
1281
1282 /*{{{ Floating toggle */
1283
1284
1285 static void replace(WSplitSplit *split, WSplitSplit *nsplit)
1286 {
1287     WSplitInner *psplit=split->isplit.split.parent;
1288
1289     nsplit->tl=split->tl;
1290     split->tl=NULL;
1291     nsplit->tl->parent=(WSplitInner*)nsplit;
1292
1293     nsplit->br=split->br;
1294     split->br=NULL;
1295     nsplit->br->parent=(WSplitInner*)nsplit;
1296
1297     if(psplit!=NULL){
1298         splitinner_replace((WSplitInner*)psplit, (WSplit*)split,
1299                            (WSplit*)nsplit);
1300     }else{
1301         splittree_changeroot((WSplit*)split, (WSplit*)nsplit);
1302     }
1303 }
1304
1305
1306 WSplitSplit *tiling_set_floating(WTiling *ws, WSplitSplit *split, int sp)
1307 {
1308     bool set=OBJ_IS(split, WSplitFloat);
1309     bool nset=libtu_do_setparam(sp, set);
1310     const WRectangle *g=&((WSplit*)split)->geom;
1311     WSplitSplit *ns;
1312
1313     if(!XOR(nset, set))
1314         return split;
1315
1316     if(nset){
1317         ns=(WSplitSplit*)create_splitfloat(g, ws, split->dir);
1318     }else{
1319         if(OBJ_IS(split->tl, WSplitST) || OBJ_IS(split->br, WSplitST)){
1320             warn(TR("Refusing to float split directly containing the "
1321                     "status display."));
1322             return NULL;
1323         }
1324         ns=create_splitsplit(g, split->dir);
1325     }
1326
1327     if(ns!=NULL){
1328         replace(split, ns);
1329         split_resize((WSplit*)ns, g, PRIMN_ANY, PRIMN_ANY);
1330         mainloop_defer_destroy((Obj*)split);
1331     }
1332
1333     return ns;
1334 }
1335
1336
1337 /*EXTL_DOC
1338  * Toggle floating of a split's sides at \var{split} as indicated by the
1339  * parameter \var{how} (\codestr{set}, \codestr{unset}, or \codestr{toggle}).
1340  * A split of the appropriate is returned, if there was a change.
1341  */
1342 EXTL_EXPORT_AS(WTiling, set_floating)
1343 WSplitSplit *tiling_set_floating_extl(WTiling *ws, WSplitSplit *split,
1344                                      const char *how)
1345 {
1346     if(!check_node(ws, (WSplit*)split))
1347         return NULL;
1348     return tiling_set_floating(ws, split, libtu_string_to_setparam(how));
1349 }
1350
1351
1352 /*EXTL_DOC
1353  * Toggle floating of the sides of a split containin \var{reg} as indicated
1354  * by the parameters \var{how} (\codestr{set}, \codestr{unset}, or
1355  * \codestr{toggle}) and \var{dirstr} (\codestr{left}, \codestr{right},
1356  * \codestr{up}, or \codestr{down}). The new status is returned
1357  * (and \code{false} also on error).
1358  */
1359 EXTL_EXPORT_AS(WTiling, set_floating_at)
1360 bool tiling_set_floating_at_extl(WTiling *ws, WRegion *reg, const char *how,
1361                                 const char *dirstr)
1362 {
1363     WPrimn hprimn=PRIMN_ANY, vprimn=PRIMN_ANY;
1364     WSplitSplit *split, *nsplit;
1365     WSplit *node;
1366
1367     node=(WSplit*)get_node_check(ws, reg);
1368     if(node==NULL)
1369         return FALSE;
1370
1371
1372     if(dirstr!=NULL){
1373         WRegionNavi nh;
1374
1375         if(!ioncore_string_to_navi(dirstr, &nh))
1376             return FALSE;
1377
1378         navi_to_primn(nh, &hprimn, &vprimn, PRIMN_NONE);
1379     }
1380
1381     while(TRUE){
1382         split=OBJ_CAST(node->parent, WSplitSplit);
1383         if(split==NULL){
1384             warn(TR("No suitable split here."));
1385             return FALSE;
1386         }
1387
1388         if(!OBJ_IS(split->tl, WSplitST) && !OBJ_IS(split->br, WSplitST)){
1389             WPrimn tmp=(split->dir==SPLIT_VERTICAL ? vprimn : hprimn);
1390             if(tmp==PRIMN_ANY
1391                || (node==split->tl && tmp==PRIMN_BR)
1392                || (node==split->br && tmp==PRIMN_TL)){
1393                 break;
1394             }
1395         }
1396
1397         node=(WSplit*)split;
1398     }
1399
1400     nsplit=tiling_set_floating(ws, split, libtu_string_to_setparam(how));
1401
1402     return OBJ_IS((Obj*)(nsplit==NULL ? split : nsplit), WSplitFloat);
1403 }
1404
1405
1406 /*}}}*/
1407
1408
1409 /*{{{ Save */
1410
1411
1412 ExtlTab tiling_get_configuration(WTiling *ws)
1413 {
1414     ExtlTab tab, split_tree=extl_table_none();
1415
1416     tab=region_get_base_configuration((WRegion*)ws);
1417
1418     if(ws->split_tree!=NULL){
1419         if(!split_get_config(ws->split_tree, &split_tree))
1420             warn(TR("Could not get split tree."));
1421     }
1422
1423     extl_table_sets_t(tab, "split_tree", split_tree);
1424     extl_unref_table(split_tree);
1425
1426     return tab;
1427 }
1428
1429
1430 /*}}}*/
1431
1432
1433 /*{{{ Load */
1434
1435
1436 WSplit *load_splitst(WTiling *ws, const WRectangle *geom, ExtlTab tab)
1437 {
1438     WSplitST *st;
1439
1440     if(ws->stdispnode!=NULL){
1441         warn(TR("Workspace already has a status display node."));
1442         return NULL;
1443     }
1444
1445     st=create_splitst(geom, NULL);
1446     ws->stdispnode=st;
1447     return (WSplit*)st;
1448 }
1449
1450
1451 static bool do_attach(WTiling *ws, WRegion *reg, void *p)
1452 {
1453     WSplitRegion *node=create_splitregion(&REGION_GEOM(reg), reg);
1454
1455     if(node==NULL)
1456         return FALSE;
1457
1458     if(!tiling_managed_add(ws, reg)){
1459         node->reg=NULL;
1460         destroy_obj((Obj*)node);
1461         return FALSE;
1462     }
1463
1464     *(WSplitRegion**)p=node;
1465
1466     return TRUE;
1467 }
1468
1469
1470 WSplit *load_splitregion(WTiling *ws, const WRectangle *geom, ExtlTab tab)
1471 {
1472     WWindow *par=REGION_PARENT(ws);
1473     WRegionAttachData data;
1474     WSplit *node=NULL;
1475     WFitParams fp;
1476     ExtlTab rt;
1477
1478     if(!extl_table_gets_t(tab, "regparams", &rt)){
1479         warn(TR("Missing region parameters."));
1480         return NULL;
1481     }
1482
1483     data.type=REGION_ATTACH_LOAD;
1484     data.u.tab=rt;
1485
1486     assert(par!=NULL);
1487     fp.g=*geom;
1488     fp.mode=REGION_FIT_EXACT;
1489
1490     region_attach_helper((WRegion*)ws, par, &fp,
1491                          (WRegionDoAttachFn*)do_attach, &node, &data);
1492
1493     extl_unref_table(rt);
1494
1495     return node;
1496 }
1497
1498
1499 #define MINS 1
1500
1501 WSplit *load_splitsplit(WTiling *ws, const WRectangle *geom, ExtlTab tab)
1502 {
1503     WSplit *tl=NULL, *br=NULL;
1504     WSplitSplit *split;
1505     char *dir_str;
1506     int dir, brs, tls;
1507     ExtlTab subtab;
1508     WRectangle geom2;
1509     int set=0;
1510
1511     set+=(extl_table_gets_i(tab, "tls", &tls)==TRUE);
1512     set+=(extl_table_gets_i(tab, "brs", &brs)==TRUE);
1513     set+=(extl_table_gets_s(tab, "dir", &dir_str)==TRUE);
1514
1515     if(set!=3)
1516         return NULL;
1517
1518     if(strcmp(dir_str, "vertical")==0){
1519         dir=SPLIT_VERTICAL;
1520     }else if(strcmp(dir_str, "horizontal")==0){
1521         dir=SPLIT_HORIZONTAL;
1522     }else{
1523         warn(TR("Invalid direction."));
1524         free(dir_str);
1525         return NULL;
1526     }
1527     free(dir_str);
1528
1529     split=create_splitsplit(geom, dir);
1530     if(split==NULL)
1531         return NULL;
1532
1533     tls=maxof(tls, MINS);
1534     brs=maxof(brs, MINS);
1535
1536     geom2=*geom;
1537     if(dir==SPLIT_HORIZONTAL){
1538         tls=maxof(0, geom->w)*tls/(tls+brs);
1539         geom2.w=tls;
1540     }else{
1541         tls=maxof(0, geom->h)*tls/(tls+brs);
1542         geom2.h=tls;
1543     }
1544
1545     if(extl_table_gets_t(tab, "tl", &subtab)){
1546         tl=tiling_load_node(ws, &geom2, subtab);
1547         extl_unref_table(subtab);
1548     }
1549
1550     geom2=*geom;
1551     if(dir==SPLIT_HORIZONTAL){
1552         geom2.w-=tls;
1553         geom2.x+=tls;
1554     }else{
1555         geom2.h-=tls;
1556         geom2.y+=tls;
1557     }
1558
1559     if(extl_table_gets_t(tab, "br", &subtab)){
1560         br=tiling_load_node(ws, &geom2, subtab);
1561         extl_unref_table(subtab);
1562     }
1563
1564     if(tl==NULL || br==NULL){
1565         /* PRIMN_TL/BR instead of ANY because of stdisp. */
1566         destroy_obj((Obj*)split);
1567         if(tl!=NULL){
1568             split_do_resize(tl, geom, PRIMN_BR, PRIMN_BR, FALSE);
1569             return tl;
1570         }
1571         if(br!=NULL){
1572             split_do_resize(br, geom, PRIMN_TL, PRIMN_TL, FALSE);
1573             return br;
1574         }
1575         return NULL;
1576     }
1577
1578     tl->parent=(WSplitInner*)split;
1579     br->parent=(WSplitInner*)split;
1580
1581     /*split->tmpsize=tls;*/
1582     split->tl=tl;
1583     split->br=br;
1584
1585     return (WSplit*)split;
1586 }
1587
1588
1589 WSplit *tiling_load_node_default(WTiling *ws, const WRectangle *geom,
1590                                 ExtlTab tab)
1591 {
1592     char *typestr=NULL;
1593     WSplit *node=NULL;
1594
1595     extl_table_gets_s(tab, "type", &typestr);
1596
1597     if(typestr==NULL){
1598         warn(TR("No split type given."));
1599         return NULL;
1600     }
1601
1602     if(strcmp(typestr, "WSplitRegion")==0)
1603         node=load_splitregion(ws, geom, tab);
1604     else if(strcmp(typestr, "WSplitSplit")==0)
1605         node=load_splitsplit(ws, geom, tab);
1606     else if(strcmp(typestr, "WSplitFloat")==0)
1607         node=load_splitfloat(ws, geom, tab);
1608     else if(strcmp(typestr, "WSplitST")==0)
1609         node=NULL;/*load_splitst(ws, geom, tab);*/
1610     else
1611         warn(TR("Unknown split type."));
1612
1613     free(typestr);
1614
1615     return node;
1616 }
1617
1618
1619 WSplit *tiling_load_node(WTiling *ws, const WRectangle *geom, ExtlTab tab)
1620 {
1621     WSplit *ret=NULL;
1622     CALL_DYN_RET(ret, WSplit*, tiling_load_node, ws, (ws, geom, tab));
1623     return ret;
1624 }
1625
1626
1627
1628 WRegion *tiling_load(WWindow *par, const WFitParams *fp, ExtlTab tab)
1629 {
1630     WTiling *ws;
1631     ExtlTab treetab;
1632     bool ci=TRUE;
1633
1634     if(extl_table_gets_t(tab, "split_tree", &treetab))
1635         ci=FALSE;
1636
1637     ws=create_tiling(par, fp, NULL, ci);
1638
1639     if(ws==NULL){
1640         if(!ci)
1641             extl_unref_table(treetab);
1642         return NULL;
1643     }
1644
1645     if(!ci){
1646         ws->split_tree=tiling_load_node(ws, &REGION_GEOM(ws), treetab);
1647         extl_unref_table(treetab);
1648     }
1649
1650     if(ws->split_tree==NULL){
1651         warn(TR("The workspace is empty."));
1652         destroy_obj((Obj*)ws);
1653         return NULL;
1654     }
1655
1656     ws->split_tree->ws_if_root=ws;
1657     split_restack(ws->split_tree, ws->dummywin, Above);
1658
1659     return (WRegion*)ws;
1660 }
1661
1662
1663 /*}}}*/
1664
1665
1666 /*{{{ Dynamic function table and class implementation */
1667
1668
1669 static DynFunTab tiling_dynfuntab[]={
1670     {region_map,
1671      tiling_map},
1672
1673     {region_unmap,
1674      tiling_unmap},
1675
1676     {region_do_set_focus,
1677      tiling_do_set_focus},
1678
1679     {(DynFun*)region_fitrep,
1680      (DynFun*)tiling_fitrep},
1681
1682     {region_managed_rqgeom,
1683      tiling_managed_rqgeom},
1684
1685     {region_managed_remove,
1686      tiling_managed_remove},
1687
1688     {(DynFun*)region_managed_prepare_focus,
1689      (DynFun*)tiling_managed_prepare_focus},
1690
1691     {(DynFun*)region_prepare_manage,
1692      (DynFun*)tiling_prepare_manage},
1693
1694     {(DynFun*)region_rescue_clientwins,
1695      (DynFun*)tiling_rescue_clientwins},
1696
1697     {(DynFun*)region_get_rescue_pholder_for,
1698      (DynFun*)tiling_get_rescue_pholder_for},
1699
1700     {(DynFun*)region_get_configuration,
1701      (DynFun*)tiling_get_configuration},
1702
1703     {(DynFun*)region_managed_disposeroot,
1704      (DynFun*)tiling_managed_disposeroot},
1705
1706     {(DynFun*)region_current,
1707      (DynFun*)tiling_current},
1708
1709     {(DynFun*)tiling_managed_add,
1710      (DynFun*)tiling_managed_add_default},
1711
1712     {region_manage_stdisp,
1713      tiling_manage_stdisp},
1714
1715     {region_unmanage_stdisp,
1716      tiling_unmanage_stdisp},
1717
1718     {(DynFun*)tiling_load_node,
1719      (DynFun*)tiling_load_node_default},
1720
1721     {region_restack,
1722      tiling_restack},
1723
1724     {region_stacking,
1725      tiling_stacking},
1726
1727     {(DynFun*)region_navi_first,
1728      (DynFun*)tiling_navi_first},
1729
1730     {(DynFun*)region_navi_next,
1731      (DynFun*)tiling_navi_next},
1732
1733     {(DynFun*)region_xwindow,
1734      (DynFun*)tiling_xwindow},
1735
1736     END_DYNFUNTAB
1737 };
1738
1739
1740 EXTL_EXPORT
1741 IMPLCLASS(WTiling, WRegion, tiling_deinit, tiling_dynfuntab);
1742
1743
1744 /*}}}*/
1745