mod_tiling/splitfloat.c

   1 /*
   2  * ion/mod_tiling/splitext.c
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2008.
   5  *
   6  * See the included file LICENSE for details.
   7  */
   8
   9 #include <string.h>
  10 #include <limits.h>
  11 #include <libtu/objp.h>
  12 #include <libtu/minmax.h>
  13 #include <ioncore/common.h>
  14 #include <ioncore/global.h>
  15 #include <ioncore/rootwin.h>
  16 #include <ioncore/xwindow.h>
  17 #include <ioncore/window.h>
  18
  19 #include "tiling.h"
  20 #include "split.h"
  21 #include "splitfloat.h"
  22 #include "panehandle.h"
  23
  24
  25 #define GEOM(X) (((WSplit*)(X))->geom)
  26
  27
  28 /*{{{ Init/deinit */
  29
  30
  31 static void splitfloat_set_borderlines(WSplitFloat *split)
  32 {
  33     int dir=split->ssplit.dir;
  34
  35     split->tlpwin->bline=(dir==SPLIT_HORIZONTAL
  36                           ? GR_BORDERLINE_RIGHT
  37                           : GR_BORDERLINE_BOTTOM);
  38
  39     split->brpwin->bline=(dir==SPLIT_HORIZONTAL
  40                           ? GR_BORDERLINE_LEFT
  41                           : GR_BORDERLINE_TOP);
  42 }
  43
  44
  45 bool splitfloat_init(WSplitFloat *split, const WRectangle *geom,
  46                      WTiling *ws, int dir)
  47 {
  48     WFitParams fp;
  49     WWindow *par=REGION_PARENT(ws);
  50
  51     assert(par!=NULL);
  52
  53     fp.g=*geom;
  54     fp.mode=REGION_FIT_EXACT;
  55     split->tlpwin=create_panehandle(par, &fp);
  56     if(split->tlpwin==NULL)
  57         return FALSE;
  58
  59     fp.g=*geom;
  60     fp.mode=REGION_FIT_EXACT;
  61     split->brpwin=create_panehandle(par, &fp);
  62     if(split->brpwin==NULL){
  63         destroy_obj((Obj*)split->tlpwin);
  64         return FALSE;
  65     }
  66
  67     ((WRegion*)split->brpwin)->flags|=REGION_SKIP_FOCUS;
  68     ((WRegion*)split->tlpwin)->flags|=REGION_SKIP_FOCUS;
  69
  70     if(!splitsplit_init(&(split->ssplit), geom, dir)){
  71         destroy_obj((Obj*)split->brpwin);
  72         destroy_obj((Obj*)split->tlpwin);
  73         return FALSE;
  74     }
  75
  76     split->tlpwin->splitfloat=split;
  77     split->brpwin->splitfloat=split;
  78
  79     splitfloat_set_borderlines(split);
  80
  81     if(REGION_IS_MAPPED(ws)){
  82         region_map((WRegion*)(split->tlpwin));
  83         region_map((WRegion*)(split->brpwin));
  84     }
  85
  86     return TRUE;
  87 }
  88
  89
  90 WSplitFloat *create_splitfloat(const WRectangle *geom, WTiling *ws, int dir)
  91 {
  92     CREATEOBJ_IMPL(WSplitFloat, splitfloat, (p, geom, ws, dir));
  93 }
  94
  95
  96 void splitfloat_deinit(WSplitFloat *split)
  97 {
  98     if(split->tlpwin!=NULL){
  99         WPaneHandle *tmp=split->tlpwin;
 100         split->tlpwin=NULL;
 101         tmp->splitfloat=NULL;
 102         destroy_obj((Obj*)tmp);
 103     }
 104
 105     if(split->brpwin!=NULL){
 106         WPaneHandle *tmp=split->brpwin;
 107         split->brpwin=NULL;
 108         tmp->splitfloat=NULL;
 109         destroy_obj((Obj*)tmp);
 110     }
 111
 112     splitsplit_deinit(&(split->ssplit));
 113 }
 114
 115
 116 /*}}}*/
 117
 118
 119 /*{{{ X window handling */
 120
 121
 122 static void stack_stacking_reg(WRegion *reg,
 123                                Window *bottomret, Window *topret)
 124 {
 125     Window b=None, t=None;
 126
 127     if(reg!=NULL){
 128         region_stacking(reg, &b, &t);
 129         if(*bottomret==None)
 130             *bottomret=b;
 131         if(t!=None)
 132             *topret=t;
 133     }
 134 }
 135
 136
 137 static void stack_stacking_split(WSplit *split,
 138                                  Window *bottomret, Window *topret)
 139 {
 140     Window b=None, t=None;
 141
 142     if(split!=NULL){
 143         split_stacking(split, &b, &t);
 144         if(*bottomret==None)
 145             *bottomret=b;
 146         if(t!=None)
 147             *topret=t;
 148     }
 149 }
 150
 151
 152 static void splitfloat_stacking(WSplitFloat *split,
 153                                 Window *bottomret, Window *topret)
 154 {
 155     *bottomret=None;
 156     *topret=None;
 157
 158     if(split->ssplit.current!=SPLIT_CURRENT_TL){
 159         stack_stacking_reg((WRegion*)split->tlpwin, bottomret, topret);
 160         stack_stacking_split(split->ssplit.tl, bottomret, topret);
 161         stack_stacking_reg((WRegion*)split->brpwin, bottomret, topret);
 162         stack_stacking_split(split->ssplit.br, bottomret, topret);
 163     }else{
 164         stack_stacking_reg((WRegion*)split->brpwin, bottomret, topret);
 165         stack_stacking_split(split->ssplit.br, bottomret, topret);
 166         stack_stacking_reg((WRegion*)split->tlpwin, bottomret, topret);
 167         stack_stacking_split(split->ssplit.tl, bottomret, topret);
 168     }
 169 }
 170
 171
 172 static void stack_restack_reg(WRegion *reg, Window *other, int *mode)
 173 {
 174     Window b=None, t=None;
 175
 176     if(reg!=NULL){
 177         region_restack(reg, *other, *mode);
 178         region_stacking(reg, &b, &t);
 179         if(t!=None){
 180             *other=t;
 181             *mode=Above;
 182         }
 183     }
 184 }
 185
 186
 187 static void stack_restack_split(WSplit *split, Window *other, int *mode)
 188 {
 189     Window b=None, t=None;
 190
 191     if(split!=NULL){
 192         split_restack(split, *other, *mode);
 193         split_stacking(split, &b, &t);
 194         if(t!=None){
 195             *other=t;
 196             *mode=Above;
 197         }
 198     }
 199 }
 200
 201
 202
 203 static void splitfloat_restack(WSplitFloat *split, Window other, int mode)
 204 {
 205     if(split->ssplit.current!=SPLIT_CURRENT_TL){
 206         stack_restack_reg((WRegion*)split->tlpwin, &other, &mode);
 207         stack_restack_split(split->ssplit.tl, &other, &mode);
 208         stack_restack_reg((WRegion*)split->brpwin, &other, &mode);
 209         stack_restack_split(split->ssplit.br, &other, &mode);
 210     }else{
 211         stack_restack_reg((WRegion*)split->brpwin, &other, &mode);
 212         stack_restack_split(split->ssplit.br, &other, &mode);
 213         stack_restack_reg((WRegion*)split->tlpwin, &other, &mode);
 214         stack_restack_split(split->ssplit.tl, &other, &mode);
 215     }
 216 }
 217
 218
 219 static void splitfloat_map(WSplitFloat *split)
 220 {
 221     region_map((WRegion*)(split->tlpwin));
 222     region_map((WRegion*)(split->brpwin));
 223     splitinner_forall((WSplitInner*)split, split_map);
 224 }
 225
 226
 227 static void splitfloat_unmap(WSplitFloat *split)
 228 {
 229     region_unmap((WRegion*)(split->tlpwin));
 230     region_unmap((WRegion*)(split->brpwin));
 231     splitinner_forall((WSplitInner*)split, split_unmap);
 232 }
 233
 234
 235 static void reparentreg(WRegion *reg, WWindow *target)
 236 {
 237     WRectangle g=REGION_GEOM(reg);
 238     region_reparent(reg, target, &g, REGION_FIT_EXACT);
 239 }
 240
 241
 242 static void splitfloat_reparent(WSplitFloat *split, WWindow *target)
 243 {
 244     if(split->ssplit.current!=SPLIT_CURRENT_TL){
 245         reparentreg((WRegion*)split->tlpwin, target);
 246         split_reparent(split->ssplit.tl, target);
 247         reparentreg((WRegion*)split->brpwin, target);
 248         split_reparent(split->ssplit.br, target);
 249     }else{
 250         reparentreg((WRegion*)split->brpwin, target);
 251         split_reparent(split->ssplit.br, target);
 252         reparentreg((WRegion*)split->tlpwin, target);
 253         split_reparent(split->ssplit.tl, target);
 254     }
 255 }
 256
 257
 258 /*}}}*/
 259
 260
 261 /*{{{ Geometry */
 262
 263
 264 #define TL_BORDER(SF) ((SF)->ssplit.dir==SPLIT_VERTICAL \
 265                        ? (SF)->tlpwin->bdw.bottom       \
 266                        : (SF)->tlpwin->bdw.right)
 267
 268 #define BR_BORDER(SF) ((SF)->ssplit.dir==SPLIT_VERTICAL \
 269                        ? (SF)->brpwin->bdw.top          \
 270                        : (SF)->brpwin->bdw.left)
 271
 272
 273 void splitfloat_tl_pwin_to_cnt(WSplitFloat *split, WRectangle *g)
 274 {
 275     if(split->ssplit.dir==SPLIT_HORIZONTAL)
 276         g->w=maxof(1, g->w-split->tlpwin->bdw.right);
 277     else
 278         g->h=maxof(1, g->h-split->tlpwin->bdw.bottom);
 279 }
 280
 281
 282 void splitfloat_br_pwin_to_cnt(WSplitFloat *split, WRectangle *g)
 283 {
 284     if(split->ssplit.dir==SPLIT_HORIZONTAL){
 285         int delta=split->tlpwin->bdw.left;
 286         g->w=maxof(1, g->w-delta);
 287         g->x+=delta;
 288     }else{
 289         int delta=split->tlpwin->bdw.top;
 290         g->h=maxof(1, g->h-delta);
 291         g->y+=delta;
 292     }
 293 }
 294
 295
 296 void splitfloat_tl_cnt_to_pwin(WSplitFloat *split, WRectangle *g)
 297 {
 298     if(split->ssplit.dir==SPLIT_HORIZONTAL)
 299         g->w=maxof(1, g->w+split->tlpwin->bdw.right);
 300     else
 301         g->h=maxof(1, g->h+split->tlpwin->bdw.bottom);
 302 }
 303
 304
 305 void splitfloat_br_cnt_to_pwin(WSplitFloat *split, WRectangle *g)
 306 {
 307     if(split->ssplit.dir==SPLIT_HORIZONTAL){
 308         int delta=split->tlpwin->bdw.left;
 309         g->w=maxof(1, g->w+delta);
 310         g->x-=delta;
 311     }else{
 312         int delta=split->tlpwin->bdw.top;
 313         g->h=maxof(1, g->h+delta);
 314         g->y-=delta;
 315     }
 316 }
 317
 318
 319 static int infadd(int x, int y)
 320 {
 321     return ((x==INT_MAX || y==INT_MAX) ? INT_MAX : (x+y));
 322 }
 323
 324
 325 static int splitfloat_get_handle(WSplitFloat *split, int dir,
 326                                   WSplit *other)
 327 {
 328     assert(other==split->ssplit.tl || other==split->ssplit.br);
 329
 330     if(dir!=split->ssplit.dir)
 331         return 0;
 332
 333     if(dir==SPLIT_VERTICAL){
 334         if(other==split->ssplit.tl)
 335             return split->tlpwin->bdw.right;
 336         else if(other==split->ssplit.br)
 337             return split->tlpwin->bdw.left;
 338     }else{
 339         if(other==split->ssplit.tl)
 340             return split->tlpwin->bdw.bottom;
 341         else if(other==split->ssplit.br)
 342             return split->tlpwin->bdw.top;
 343     }
 344
 345     return 0;
 346 }
 347
 348
 349 static int splitfloat_get_max(WSplitFloat *split, int dir, WSplit *other)
 350 {
 351     return infadd((dir==SPLIT_VERTICAL ? other->max_h : other->max_w),
 352                   splitfloat_get_handle(split, dir, other));
 353 }
 354
 355
 356 static int splitfloat_get_min(WSplitFloat *split, int dir, WSplit *other)
 357 {
 358     return ((dir==SPLIT_VERTICAL ? other->min_h : other->min_w)
 359             +splitfloat_get_handle(split, dir, other));
 360 }
 361
 362
 363 static void splitfloat_update_bounds(WSplitFloat *split, bool recursive)
 364 {
 365     WSplit *tl=split->ssplit.tl, *br=split->ssplit.br;
 366     WSplit *node=(WSplit*)split;
 367     int tl_max_w, br_max_w, tl_max_h, br_max_h;
 368     int tl_min_w, br_min_w, tl_min_h, br_min_h;
 369
 370     if(recursive){
 371         split_update_bounds(tl, recursive);
 372         split_update_bounds(br, recursive);
 373     }
 374
 375     tl_max_w=splitfloat_get_max(split, SPLIT_HORIZONTAL, tl);
 376     br_max_w=splitfloat_get_max(split, SPLIT_HORIZONTAL, br);
 377     tl_max_h=splitfloat_get_max(split, SPLIT_VERTICAL, tl);
 378     br_max_h=splitfloat_get_max(split, SPLIT_VERTICAL, br);
 379     tl_min_w=splitfloat_get_min(split, SPLIT_HORIZONTAL, tl);
 380     br_min_w=splitfloat_get_min(split, SPLIT_HORIZONTAL, br);
 381     tl_min_h=splitfloat_get_min(split, SPLIT_VERTICAL, tl);
 382     br_min_h=splitfloat_get_min(split, SPLIT_VERTICAL, br);
 383
 384     if(split->ssplit.dir==SPLIT_HORIZONTAL){
 385         node->max_w=infadd(tl_max_w, br_max_w);
 386         node->min_w=minof(tl_min_w, br_min_w);
 387         node->unused_w=0;
 388         node->min_h=maxof(tl_min_h, br_min_h);
 389         node->max_h=maxof(minof(tl_max_h, br_max_h), node->min_h);
 390         node->unused_h=minof(tl->unused_h, br->unused_h);
 391     }else{
 392         node->max_h=infadd(tl_max_h, br_max_h);
 393         node->min_h=minof(tl_min_h, br_min_h);
 394         node->unused_h=0;
 395         node->min_w=maxof(tl_min_w, br_min_w);
 396         node->max_w=maxof(minof(tl_max_w, br_max_w), node->min_w);
 397         node->unused_w=minof(tl->unused_w, br->unused_w);
 398     }
 399 }
 400
 401
 402 void splitfloat_update_handles(WSplitFloat *split, const WRectangle *tlg_,
 403                                const WRectangle *brg_)
 404 {
 405     WRectangle tlg=*tlg_, brg=*brg_;
 406
 407     if(split->ssplit.dir==SPLIT_HORIZONTAL){
 408         tlg.w=split->tlpwin->bdw.right;
 409         tlg.x=tlg_->x+tlg_->w-tlg.w;
 410         brg.w=split->brpwin->bdw.left;
 411     }else{
 412         tlg.h=split->tlpwin->bdw.bottom;
 413         tlg.y=tlg_->y+tlg_->h-tlg.h;
 414         brg.h=split->brpwin->bdw.top;
 415     }
 416
 417     region_fit((WRegion*)split->tlpwin, &tlg, REGION_FIT_EXACT);
 418     region_fit((WRegion*)split->brpwin, &brg, REGION_FIT_EXACT);
 419 }
 420
 421
 422 static void bound(int *what, int min, int max)
 423 {
 424     if(*what<min)
 425         *what=min;
 426     else if(*what>max)
 427         *what=max;
 428 }
 429
 430
 431 static void adjust_sizes(int *tls_, int *brs_, int nsize,
 432                          int tlmin, int brmin, int tlmax, int brmax,
 433                          int primn)
 434 {
 435     int tls=maxof(0, *tls_);
 436     int brs=maxof(0, *brs_);
 437     nsize=maxof(1, nsize);
 438
 439     if(primn==PRIMN_TL){
 440         tls=maxof(1, nsize-brs);
 441         bound(&tls, tlmin, tlmax);
 442         brs=nsize-tls;
 443         bound(&brs, brmin, brmax);
 444         tls=nsize-brs;
 445         bound(&tls, tlmin, tlmax);
 446     }else if(primn==PRIMN_BR){
 447         brs=maxof(1, nsize-tls);
 448         bound(&brs, brmin, brmax);
 449         tls=nsize-brs;
 450         bound(&tls, tlmin, tlmax);
 451         brs=nsize-tls;
 452         bound(&brs, brmin, brmax);
 453     }else{ /* && PRIMN_ANY */
 454         tls=tls*nsize/maxof(2, tls+brs);
 455         bound(&tls, tlmin, tlmax);
 456         brs=nsize-tls;
 457         bound(&brs, brmin, brmax);
 458         tls=nsize-brs;
 459         bound(&tls, tlmin, tlmax);
 460     }
 461
 462     *tls_=tls;
 463     *brs_=brs;
 464 }
 465
 466
 467 static void adjust_size(int *sz, int dir, WSplitFloat *f, WSplit *s)
 468 {
 469     int mi=splitfloat_get_min(f, dir, s);
 470     int ma=splitfloat_get_max(f, dir, s);
 471     *sz=maxof(mi, minof(*sz, ma));
 472 }
 473
 474
 475 static void splitfloat_do_resize(WSplitFloat *split, const WRectangle *ng,
 476                                  int hprimn, int vprimn, bool transpose)
 477 {
 478     WRectangle tlg=GEOM(split->ssplit.tl);
 479     WRectangle brg=GEOM(split->ssplit.br);
 480     WRectangle ntlg=*ng, nbrg=*ng;
 481     WRectangle *og=&((WSplit*)split)->geom;
 482     int dir=split->ssplit.dir;
 483     bool adjust=TRUE;
 484
 485     splitfloat_tl_cnt_to_pwin(split, &tlg);
 486     splitfloat_br_cnt_to_pwin(split, &brg);
 487
 488     if(transpose){
 489         if(dir==SPLIT_VERTICAL){
 490             dir=SPLIT_HORIZONTAL;
 491             split->tlpwin->bline=GR_BORDERLINE_RIGHT;
 492             split->brpwin->bline=GR_BORDERLINE_LEFT;
 493         }else{
 494             dir=SPLIT_VERTICAL;
 495             split->tlpwin->bline=GR_BORDERLINE_BOTTOM;
 496             split->brpwin->bline=GR_BORDERLINE_TOP;
 497         }
 498         split->ssplit.dir=dir;
 499     }
 500
 501     if(dir==SPLIT_VERTICAL){
 502         if(ng->h<=tlg.h+brg.h){
 503             if(transpose){
 504                 ntlg.h=minof(tlg.w, ng->h*2/3);
 505                 nbrg.h=minof(brg.w, ng->h*2/3);
 506                 adjust_size(&ntlg.h, dir, split, split->ssplit.tl);
 507                 adjust_size(&nbrg.h, dir, split, split->ssplit.br);
 508                 adjust=(ng->h>ntlg.h+nbrg.h);
 509             }else{
 510                 ntlg.h=minof(ng->h, tlg.h);
 511                 nbrg.h=minof(ng->h, brg.h);
 512                 adjust=FALSE;
 513             }
 514         }else{
 515             ntlg.h=tlg.h;
 516             nbrg.h=brg.h;
 517         }
 518
 519         if(adjust){
 520             adjust_sizes(&ntlg.h, &nbrg.h, ng->h,
 521                          splitfloat_get_min(split, dir, split->ssplit.tl),
 522                          splitfloat_get_min(split, dir, split->ssplit.br),
 523                          splitfloat_get_max(split, dir, split->ssplit.tl),
 524                          splitfloat_get_max(split, dir, split->ssplit.br),
 525                          vprimn);
 526         }
 527
 528         nbrg.y=ng->y+ng->h-nbrg.h;
 529     }else{
 530         if(ng->w<=tlg.w+brg.w){
 531             if(transpose){
 532                 ntlg.w=minof(tlg.h, ng->w*2/3);
 533                 nbrg.w=minof(brg.h, ng->w*2/3);
 534                 adjust_size(&ntlg.w, dir, split, split->ssplit.tl);
 535                 adjust_size(&nbrg.w, dir, split, split->ssplit.br);
 536                 adjust=(ng->w>ntlg.w+nbrg.w);
 537             }else{
 538                 ntlg.w=minof(ng->w, tlg.w);
 539                 nbrg.w=minof(ng->w, brg.w);
 540                 adjust=FALSE;
 541             }
 542         }else{
 543             ntlg.w=tlg.w;
 544             nbrg.w=brg.w;
 545         }
 546
 547         if(adjust){
 548             adjust_sizes(&ntlg.w, &nbrg.w, ng->w,
 549                          splitfloat_get_min(split, dir, split->ssplit.tl),
 550                          splitfloat_get_min(split, dir, split->ssplit.br),
 551                          splitfloat_get_max(split, dir, split->ssplit.tl),
 552                          splitfloat_get_max(split, dir, split->ssplit.br),
 553                          hprimn);
 554         }
 555
 556         nbrg.x=ng->x+ng->w-nbrg.w;
 557     }
 558
 559     GEOM(split)=*ng;
 560
 561     splitfloat_update_handles(split, &ntlg, &nbrg);
 562
 563     splitfloat_tl_pwin_to_cnt(split, &ntlg);
 564     split_do_resize(split->ssplit.tl, &ntlg, hprimn, vprimn, transpose);
 565     splitfloat_br_pwin_to_cnt(split, &nbrg);
 566     split_do_resize(split->ssplit.br, &nbrg, hprimn, vprimn, transpose);
 567 }
 568
 569
 570 static void calc_amount(int *amount, int *oamount,
 571                         int rs, WSplitSplit *p, int omax,
 572                         const WRectangle *ng, const WRectangle *og)
 573 {
 574     *oamount=0;
 575
 576     if(rs>=0){
 577         if(p->dir==SPLIT_VERTICAL)
 578             *amount=maxof(0, minof(rs, GEOM(p).h-ng->h));
 579         else
 580             *amount=maxof(0, minof(rs, GEOM(p).w-ng->w));
 581     }else{
 582         if(p->dir==SPLIT_VERTICAL){
 583             int overlap=maxof(0, og->h-(GEOM(p).h-ng->h));
 584             *amount=-minof(-rs, overlap);
 585             *oamount=maxof(0, minof(*amount-rs, omax-og->h));
 586             *amount-=*oamount;
 587         }else{
 588             int overlap=maxof(0, og->w-(GEOM(p).w-ng->w));
 589             *amount=-minof(-rs, overlap);
 590             *oamount=maxof(0, minof(*amount-rs, omax-og->w));
 591             *amount-=*oamount;
 592         }
 593     }
 594 }
 595
 596
 597 static void splitfloat_do_rqsize(WSplitFloat *split, WSplit *node,
 598                                  RootwardAmount *ha, RootwardAmount *va,
 599                                  WRectangle *rg, bool tryonly)
 600 {
 601     int hprimn=PRIMN_ANY, vprimn=PRIMN_ANY;
 602     WRectangle pg, og, ng, nog, nng;
 603     RootwardAmount *ca;
 604     WSplit *other;
 605     int amount=0, oamount=0, omax;
 606     int thisnode;
 607     WSplitSplit *p=&(split->ssplit);
 608
 609     assert(!ha->any || ha->tl==0);
 610     assert(!va->any || va->tl==0);
 611     assert(p->tl==node || p->br==node);
 612
 613     if(p->tl==node){
 614         other=p->br;
 615         thisnode=PRIMN_TL;
 616     }else{
 617         other=p->tl;
 618         thisnode=PRIMN_BR;
 619     }
 620
 621     ng=GEOM(node);
 622     og=GEOM(other);
 623
 624     if(thisnode==PRIMN_TL){
 625         splitfloat_tl_cnt_to_pwin(split, &ng);
 626         splitfloat_br_cnt_to_pwin(split, &og);
 627     }else{
 628         splitfloat_br_cnt_to_pwin(split, &ng);
 629         splitfloat_tl_cnt_to_pwin(split, &og);
 630     }
 631
 632     ca=(p->dir==SPLIT_VERTICAL ? va : ha);
 633
 634     omax=splitfloat_get_max(split, p->dir, other);
 635
 636     if(thisnode==PRIMN_TL || ca->any){
 637         calc_amount(&amount, &oamount, ca->br, p, omax, &ng, &og);
 638         ca->br-=amount;
 639     }else/*if(thisnode==PRIMN_BR)*/{
 640         calc_amount(&amount, &oamount, ca->tl, p, omax, &ng, &og);
 641         ca->tl-=amount;
 642     }
 643
 644     if(((WSplit*)p)->parent==NULL /*||
 645        (ha->tl==0 && ha->br==0 && va->tl==0 && va->br==0)*/){
 646         pg=((WSplit*)p)->geom;
 647     }else{
 648         splitinner_do_rqsize(((WSplit*)p)->parent, (WSplit*)p, ha, va,
 649                              &pg, tryonly);
 650     }
 651
 652     assert(pg.w>=0 && pg.h>=0);
 653
 654     nog=pg;
 655     nng=pg;
 656
 657     if(p->dir==SPLIT_VERTICAL){
 658         nog.h=minof(pg.h, maxof(0, og.h+oamount));
 659         nng.h=minof(pg.h, maxof(0, ng.h+amount+pg.h-GEOM(p).h));
 660         if(thisnode==PRIMN_TL)
 661             nog.y=pg.y+pg.h-nog.h;
 662         else
 663             nng.y=pg.y+pg.h-nng.h;
 664         vprimn=thisnode;
 665     }else{
 666         nog.w=minof(pg.w, maxof(0, og.w+oamount));
 667         nng.w=minof(pg.w, maxof(0, ng.w+amount+pg.w-GEOM(p).w));
 668         if(thisnode==PRIMN_TL)
 669             nog.x=pg.x+pg.w-nog.w;
 670         else
 671             nng.x=pg.x+pg.w-nng.w;
 672         hprimn=thisnode;
 673     }
 674
 675     if(!tryonly){
 676         GEOM(p)=pg;
 677
 678         if(thisnode==PRIMN_TL){
 679             splitfloat_update_handles(split, &nng, &nog);
 680             splitfloat_br_pwin_to_cnt(split, &nog);
 681         }else{
 682             splitfloat_update_handles(split, &nog, &nng);
 683             splitfloat_tl_pwin_to_cnt(split, &nog);
 684         }
 685
 686         /* Entä jos 'other' on stdisp? */
 687         split_do_resize(other, &nog, hprimn, vprimn, FALSE);
 688     }
 689
 690     *rg=nng;
 691     if(thisnode==PRIMN_TL)
 692         splitfloat_tl_pwin_to_cnt(split, rg);
 693     else
 694         splitfloat_br_pwin_to_cnt(split, rg);
 695 }
 696
 697
 698 void splitfloat_flip(WSplitFloat *split)
 699 {
 700     WRectangle tlg, brg;
 701
 702     splitsplit_flip_default(&split->ssplit);
 703
 704     tlg=split->ssplit.tl->geom;
 705     brg=split->ssplit.br->geom;
 706
 707     splitfloat_tl_cnt_to_pwin(split, &tlg);
 708     splitfloat_br_cnt_to_pwin(split, &brg);
 709     splitfloat_update_handles(split, &tlg, &brg);
 710 }
 711
 712
 713 /*}}}*/
 714
 715
 716 /*{{{ Loading code */
 717
 718
 719 #define MINS 8
 720
 721 static void adjust_tls_brs(int *tls, int *brs, int total)
 722 {
 723     if(*tls<=0)
 724         *tls=MINS;
 725     if(*brs<=0)
 726         *brs=MINS;
 727
 728     if(*tls+*brs<total){
 729         *tls=total*(*tls)/(*tls+*brs);
 730         *brs=total-(*tls);
 731     }
 732
 733     *tls=minof(maxof(MINS, *tls), total);
 734     *brs=minof(maxof(MINS, *brs), total);
 735 }
 736
 737
 738 static void calc_tlg_brg(const WRectangle *geom, int tls, int brs, int dir,
 739                          WRectangle *tlg, WRectangle *brg)
 740 {
 741     *tlg=*geom;
 742     *brg=*geom;
 743
 744     if(dir==SPLIT_HORIZONTAL){
 745         adjust_tls_brs(&tls, &brs, geom->w);
 746         tlg->w=tls;
 747         brg->w=brs;
 748         brg->x=geom->x+geom->w-brs;
 749     }else{
 750         adjust_tls_brs(&tls, &brs, geom->h);
 751         tlg->h=tls;
 752         brg->h=brs;
 753         brg->y=geom->y+geom->h-brs;
 754     }
 755 }
 756
 757
 758 WSplit *load_splitfloat(WTiling *ws, const WRectangle *geom, ExtlTab tab)
 759 {
 760     WSplit *tl=NULL, *br=NULL;
 761     WSplitFloat *split;
 762     char *dir_str;
 763     int dir, brs, tls;
 764     ExtlTab subtab;
 765     WRectangle tlg, brg;
 766     int set=0;
 767
 768     set+=(extl_table_gets_i(tab, "tls", &tls)==TRUE);
 769     set+=(extl_table_gets_i(tab, "brs", &brs)==TRUE);
 770     set+=(extl_table_gets_s(tab, "dir", &dir_str)==TRUE);
 771
 772     if(set!=3)
 773         return NULL;
 774
 775     if(strcmp(dir_str, "vertical")==0){
 776         dir=SPLIT_VERTICAL;
 777     }else if(strcmp(dir_str, "horizontal")==0){
 778         dir=SPLIT_HORIZONTAL;
 779     }else{
 780         warn(TR("Invalid direction."));
 781         free(dir_str);
 782         return NULL;
 783     }
 784     free(dir_str);
 785
 786     split=create_splitfloat(geom, ws, dir);
 787     if(split==NULL)
 788         return NULL;
 789
 790     if(!extl_table_is_bool_set(tab, "tls_brs_incl_handles")){
 791         if(split->ssplit.dir==SPLIT_HORIZONTAL){
 792             tls+=split->tlpwin->bdw.right;
 793             brs+=split->brpwin->bdw.left;
 794         }else{
 795             tls+=split->tlpwin->bdw.bottom;
 796             brs+=split->brpwin->bdw.top;
 797         }
 798     }
 799
 800     calc_tlg_brg(geom, tls, brs, dir, &tlg, &brg);
 801
 802     splitfloat_update_handles(split, &tlg, &brg);
 803
 804     if(extl_table_gets_t(tab, "tl", &subtab)){
 805         WRectangle g=tlg;
 806         splitfloat_tl_pwin_to_cnt(split, &g);
 807         tl=tiling_load_node(ws, &g, subtab);
 808         extl_unref_table(subtab);
 809     }
 810
 811     if(extl_table_gets_t(tab, "br", &subtab)){
 812         WRectangle g;
 813         if(tl==NULL){
 814             g=*geom;
 815         }else{
 816             g=brg;
 817             splitfloat_br_pwin_to_cnt(split, &g);
 818         }
 819         br=tiling_load_node(ws, &g, subtab);
 820         extl_unref_table(subtab);
 821     }
 822
 823     if(tl==NULL || br==NULL){
 824         destroy_obj((Obj*)split);
 825         if(tl!=NULL){
 826             split_do_resize(tl, geom, PRIMN_ANY, PRIMN_ANY, FALSE);
 827             return tl;
 828         }
 829         if(br!=NULL){
 830             split_do_resize(br, geom, PRIMN_ANY, PRIMN_ANY, FALSE);
 831             return br;
 832         }
 833         return NULL;
 834     }
 835
 836     tl->parent=(WSplitInner*)split;
 837     br->parent=(WSplitInner*)split;
 838
 839     split->ssplit.tl=tl;
 840     split->ssplit.br=br;
 841
 842     return (WSplit*)split;
 843 }
 844
 845
 846 /*}}}*/
 847
 848
 849 /*{{{ Split */
 850
 851
 852 WSplitRegion *splittree_split_floating(WSplit *node, int dir, int primn,
 853                                        int nmins, WRegionSimpleCreateFn *fn,
 854                                        WTiling *ws)
 855 {
 856     WSplitFloat *sf;
 857     int omins, mins;
 858     int sn, so, s, rs;
 859     int bn, bo;
 860     WRectangle gn, go, gnc, goc;
 861     WFitParams fp;
 862     WRegion *nreg;
 863     WSplitRegion *nnode;
 864     WSplitInner *psplit;
 865
 866     if(primn!=PRIMN_TL && primn!=PRIMN_BR)
 867         primn=PRIMN_BR;
 868
 869     split_update_bounds(split_find_root(node), TRUE);
 870
 871     sf=create_splitfloat(&node->geom, ws, dir);
 872
 873     if(sf==NULL)
 874         return NULL;
 875
 876     omins=(dir==SPLIT_VERTICAL ? node->min_h : node->min_w);
 877     s=split_size(node, dir);
 878
 879     if(primn==PRIMN_BR){
 880         bn=BR_BORDER(sf);
 881         bo=TL_BORDER(sf);
 882     }else{
 883         bn=TL_BORDER(sf);
 884         bo=BR_BORDER(sf);
 885     }
 886
 887     mins=maxof(omins+bo, nmins+bn);
 888
 889     /* Potentially resize old node. */
 890
 891     splittree_begin_resize();
 892
 893     if(mins>s){
 894         WRectangle ng=node->geom, rg;
 895         if(dir==SPLIT_VERTICAL)
 896             ng.h=mins;
 897         else
 898             ng.w=mins;
 899
 900         split_do_rqgeom_(node, &ng, TRUE, TRUE, &rg, TRUE);
 901         rs=(dir==SPLIT_VERTICAL ? rg.h : rg.w);
 902         if(rs<mins){
 903             warn(TR("Unable to split: not enough free space."));
 904             destroy_obj((Obj*)sf);
 905             return NULL;
 906         }
 907         split_do_rqgeom_(node, &ng, TRUE, TRUE, &rg, FALSE);
 908         s=split_size(node, dir);
 909     }else{
 910         splittree_scan_stdisp_rootward(node);
 911     }
 912
 913     /* Calculate geometries. */
 914
 915     sn=maxof(nmins+bn, s/2);
 916     so=maxof(omins+bo, s-s/2);
 917
 918     ((WSplit*)sf)->geom=node->geom;
 919
 920     if(primn==PRIMN_TL){
 921         calc_tlg_brg(&(node->geom), sn, so, dir, &gn, &go);
 922         splitfloat_update_handles(sf, &gn, &go);
 923         gnc=gn; splitfloat_tl_pwin_to_cnt(sf, &gnc);
 924         goc=go; splitfloat_br_pwin_to_cnt(sf, &goc);
 925     }else{
 926         calc_tlg_brg(&(node->geom), so, sn, dir, &go, &gn);
 927         splitfloat_update_handles(sf, &go, &gn);
 928         goc=go; splitfloat_tl_pwin_to_cnt(sf, &goc);
 929         gnc=gn; splitfloat_br_pwin_to_cnt(sf, &gnc);
 930     }
 931
 932     /* Create the region. */
 933
 934     fp.mode=REGION_FIT_EXACT;
 935     fp.g=gnc;
 936
 937     nreg=fn(REGION_PARENT(ws), &fp);
 938
 939     if(nreg==NULL){
 940         destroy_obj((Obj*)sf);
 941         return NULL;
 942     }
 943
 944     nnode=create_splitregion(&(fp.g), nreg);
 945     if(nnode==NULL){
 946         destroy_obj((Obj*)nreg);
 947         destroy_obj((Obj*)sf);
 948         return NULL;
 949     }
 950
 951     /* Now that everything's ok, resize and move original node. */
 952
 953     split_do_resize(node, &goc,
 954                     (dir==SPLIT_HORIZONTAL ? primn : PRIMN_ANY),
 955                     (dir==SPLIT_VERTICAL ? primn : PRIMN_ANY),
 956                     FALSE);
 957
 958     /* Set up split structure. */
 959
 960     psplit=node->parent;
 961
 962     if(psplit!=NULL)
 963         splitinner_replace(psplit, node, (WSplit*)sf);
 964     else
 965         splittree_changeroot(node, (WSplit*)sf);
 966
 967     node->parent=(WSplitInner*)sf;
 968     ((WSplit*)nnode)->parent=(WSplitInner*)sf;
 969
 970     if(primn==PRIMN_BR){
 971         sf->ssplit.tl=node;
 972         sf->ssplit.br=(WSplit*)nnode;
 973     }else{
 974         sf->ssplit.tl=(WSplit*)nnode;
 975         sf->ssplit.br=node;
 976     }
 977
 978     /*splittree_end_resize();*/
 979
 980     return nnode;
 981 }
 982
 983
 984 /*}}}*/
 985
 986
 987 /*{{{ The class */
 988
 989
 990 static DynFunTab splitfloat_dynfuntab[]={
 991     {split_update_bounds, splitfloat_update_bounds},
 992     {split_do_resize, splitfloat_do_resize},
 993     {splitinner_do_rqsize, splitfloat_do_rqsize},
 994     {split_stacking, splitfloat_stacking},
 995     {split_restack, splitfloat_restack},
 996     {split_reparent, splitfloat_reparent},
 997     {split_map, splitfloat_map},
 998     {split_unmap, splitfloat_unmap},
 999     {splitsplit_flip, splitfloat_flip},
1000     END_DYNFUNTAB,
1001 };
1002
1003
1004 EXTL_EXPORT
1005 IMPLCLASS(WSplitFloat, WSplitSplit, splitfloat_deinit, splitfloat_dynfuntab);
1006
1007
1008 /*}}}*/
1009