Pileus Git - wmpus/blob - wm-wmii.c

   1 /*
   2  * Copyright (C) 2011 Andy Spencer <andy753421@gmail.com>
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20
  21 #include "util.h"
  22 #include "sys.h"
  23 #include "wm.h"
  24
  25 #ifndef MODKEY
  26 #define MODKEY alt
  27 #endif
  28 #ifndef MARGIN
  29 #define MARGIN 0
  30 #endif
  31 #ifndef STACK
  32 #define STACK  25
  33 #endif
  34
  35 /* Enums */
  36 typedef enum {
  37         none, move, resize
  38 } drag_t;
  39
  40 typedef enum {
  41         split, stack, max, tab
  42 } mode_t;
  43
  44 typedef enum {
  45         tiling, floating
  46 } layer_t;
  47
  48 /* Window structure types */
  49 struct win_wm { };
  50
  51 typedef struct {
  52         win_t  *win;     // the window
  53         int     height;  // win height in _this_ tag
  54 } row_t;
  55
  56 typedef struct {
  57         list_t *rows;    // of row_t
  58         row_t  *row;     // focused row
  59         int     width;   // column width
  60         mode_t  mode;    // display mode
  61 } col_t;
  62
  63 typedef struct {
  64         win_t *win;      // the window
  65         int x, y, w, h;  // position of window (in this tag)
  66 } flt_t;
  67
  68 typedef struct {
  69         list_t *cols;    // of col_t
  70         col_t  *col;     // focused col
  71         list_t *flts;    // of flt_t
  72         flt_t  *flt;     // focused flt
  73         layer_t layer;   // focused layer
  74         win_t  *geom;    // display size and position
  75 } dpy_t;
  76
  77 typedef struct {
  78         list_t *dpys;    // of dpy_t
  79         dpy_t  *dpy;     // focused dpy
  80         int     name;    // tag name
  81 } tag_t;
  82
  83 typedef struct {
  84         list_t *tags;    // of tag_t
  85         tag_t  *tag;     // focused tag
  86         win_t  *root;    // root/background window
  87         list_t *screens; // display geometry
  88 } wm_t;
  89
  90 #define WIN(node) ((win_t*)(node)->data)
  91 #define ROW(node) ((row_t*)(node)->data)
  92 #define COL(node) ((col_t*)(node)->data)
  93 #define FLT(node) ((flt_t*)(node)->data)
  94 #define DPY(node) ((dpy_t*)(node)->data)
  95 #define TAG(node) ((tag_t*)(node)->data)
  96
  97 #define tag_foreach_col(tag, dpy, col, row, win) \
  98         for (list_t *dpy =     tag ->dpys; dpy; dpy = dpy->next) \
  99         for (list_t *col = DPY(dpy)->cols; col; col = col->next) \
 100         for (list_t *row = COL(col)->rows; row; row = row->next) \
 101         for (win_t  *win = ROW(row)->win;  win; win = NULL)
 102
 103 #define tag_foreach_flt(tag, dpy, flt, win) \
 104         for (list_t *dpy =     tag ->dpys; dpy; dpy = dpy->next) \
 105         for (list_t *flt = DPY(dpy)->flts; flt; flt = flt->next) \
 106         for (win_t  *win = FLT(flt)->win;  win; win = NULL)      \
 107
 108 /* Window management data
 109  *   wm_* macros represent the currently focused item
 110  *   _only_ wm_focus protects against NULL pointers */
 111 static wm_t *wm;
 112 #define wm_tag   wm->tag
 113 #define wm_dpy   wm->tag->dpy
 114 #define wm_col   wm->tag->dpy->col
 115 #define wm_row   wm->tag->dpy->col->row
 116 #define wm_flt   wm->tag->dpy->flt
 117 #define wm_focus get_focus()
 118
 119 /* Mouse drag data */
 120 static drag_t  move_mode;
 121 static list_t *move_lrow;
 122 static list_t *move_lcol;
 123 static list_t *move_lflt;
 124 static ptr_t   move_prev;
 125 static layer_t move_layer;
 126 static struct { int v, h; } move_dir;
 127
 128 /********************
 129  * Helper functions *
 130  ********************/
 131 static win_t *get_focus(void)
 132 {
 133         if (!wm_tag || !wm_dpy)
 134                 return NULL;
 135         switch (wm_dpy->layer) {
 136         case tiling:
 137                 return wm_col && wm_row ? wm_row->win : NULL;
 138         case floating:
 139                 return wm_flt ? wm_flt->win : NULL;
 140         }
 141         return NULL;
 142 }
 143
 144 /* Search for the target window in a given tag
 145  * win may exist in other tags as well */
 146 static int searchl(tag_t *tag, win_t *target,
 147                 list_t **_dpy, list_t **_col, list_t **_row, list_t **_flt)
 148 {
 149         tag_foreach_col(tag, dpy, col, row, win) {
 150                 if (win == target) {
 151                         if (_dpy) *_dpy = dpy;
 152                         if (_col) *_col = col;
 153                         if (_row) *_row = row;
 154                         return tiling;
 155                 }
 156         }
 157         tag_foreach_flt(tag, dpy, flt, win) {
 158                 if (win == target) {
 159                         if (_dpy) *_dpy = dpy;
 160                         if (_flt) *_flt = flt;
 161                         return floating;
 162                 }
 163         }
 164         return -1;
 165 }
 166
 167 static int search(tag_t *tag, win_t *target,
 168                 dpy_t **_dpy, col_t **_col, row_t **_row, flt_t **_flt)
 169 {
 170         list_t *dpy, *col, *row, *flt;
 171         switch (searchl(tag, target, &dpy, &col, &row, &flt)) {
 172         case tiling:
 173                 if (_dpy) *_dpy = DPY(dpy);
 174                 if (_col) *_col = COL(col);
 175                 if (_row) *_row = ROW(row);
 176                 return tiling;
 177         case floating:
 178                 if (_dpy) *_dpy = DPY(dpy);
 179                 if (_flt) *_flt = FLT(flt);
 180                 return floating;
 181         }
 182         return -1;
 183 }
 184
 185 /* Set the mode for the windows column in the current tag */
 186 static void set_mode(win_t *win, mode_t mode)
 187 {
 188         col_t *col;
 189         if (tiling != search(wm_tag, win, NULL, &col, NULL, NULL))
 190                 return;
 191         printf("set_mode: %p, %d -> %d\n",
 192                         col, col->mode, mode);
 193         col->mode = mode;
 194         if (col->mode == split)
 195                 for (list_t *cur = col->rows; cur; cur = cur->next) {
 196                         row_t *row = cur->data;
 197                         row->height = wm_dpy->geom->h;
 198                 }
 199         wm_update();
 200 }
 201
 202 /* Focus the window in the current tag and record
 203  * it as the currently focused window */
 204 static void set_focus(win_t *win)
 205 {
 206         if (win == NULL || win == wm->root) {
 207                 sys_focus(wm->root);
 208                 return;
 209         }
 210
 211         /* - Only grab mouse button on unfocused window,
 212          *   this prevents stealing all mouse clicks from client windows,
 213          * - A better way may be to re-send mouse clicks to client windows
 214          *   using the return value from wm_handle_key */
 215         for (int i = key_mouse1; i < key_mouse7; i++) {
 216                 if (wm_focus)
 217                         sys_watch(wm_focus, i, MOD());
 218                 sys_unwatch(win, i, MOD());
 219         }
 220
 221         dpy_t *dpy; col_t *col; row_t *row; flt_t *flt;
 222         switch (search(wm_tag, win, &dpy, &col, &row, &flt)) {
 223         case tiling:
 224                 wm_dpy = dpy;
 225                 wm_col = col;
 226                 wm_row = row;
 227                 dpy->layer = tiling;
 228                 break;
 229         case floating:
 230                 wm_dpy = dpy;
 231                 wm_flt = flt;
 232                 dpy->layer = floating;
 233                 break;
 234         }
 235         sys_focus(win);
 236 }
 237
 238 /* Save mouse start location when moving/resizing windows */
 239 static void set_move(win_t *win, ptr_t ptr, drag_t drag)
 240 {
 241         printf("set_move: %d - %p@%d,%d\n",
 242                         drag, win, ptr.rx, ptr.ry);
 243         move_mode = drag;
 244         if (drag == move || drag == resize) {
 245                 move_layer = searchl(wm_tag, win, NULL,
 246                                 &move_lcol, &move_lrow, &move_lflt);
 247                 if (move_layer < 0)
 248                         return;
 249                 move_prev = ptr;
 250                 int midy = win->y + (win->h/2);
 251                 int midx = win->x + (win->w/2);
 252                 move_dir.v = ptr.ry < midy ? -1 : +1;
 253                 move_dir.h = ptr.rx < midx ? -1 : +1;
 254         }
 255 }
 256
 257 /* Print a text representation of the window layout
 258  * Quite useful for debugging */
 259 static void print_txt(void)
 260 {
 261         for (list_t *ltag = wm->tags; ltag; ltag = ltag->next) {
 262                 tag_t *tag = ltag->data;
 263                 printf("tag:       <%-9p [%p->%p] >%-9p d=%-9p - %d\n",
 264                                 ltag->prev, ltag, ltag->data, ltag->next,
 265                                 tag->dpy, tag->name);
 266         for (list_t *ldpy = tag->dpys; ldpy; ldpy = ldpy->next) {
 267                 dpy_t *dpy  = ldpy->data;
 268                 win_t *geom = dpy->geom;
 269                 printf("  dpy:     <%-9p [%p->%p] >%-9p %c=%-9p - %d,%d %dx%d\n",
 270                                 ldpy->prev, ldpy, ldpy->data, ldpy->next,
 271                                 dpy->layer == tiling   ? 'c' : 'f',
 272                                 dpy->layer == tiling   ? (void*)dpy->col : (void*)dpy->flt,
 273                                 geom->x, geom->y, geom->h, geom->w);
 274         for (list_t *lcol = dpy->cols; lcol; lcol = lcol->next) {
 275                 col_t *col = lcol->data;
 276                 printf("    col:   <%-9p [%p->%p] >%-9p r=%-9p - %dpx @ %d\n",
 277                                 lcol->prev, lcol, lcol->data, lcol->next,
 278                                 col->row, col->width, col->mode);
 279         for (list_t *lrow = col->rows; lrow; lrow = lrow->next) {
 280                 row_t *row = lrow->data;
 281                 win_t *win = row->win;
 282                 printf("      win: <%-9p [%p>>%p] >%-9p focus=%d%d    - %4dpx \n",
 283                                 lrow->prev, lrow, win, lrow->next,
 284                                 col->row == row, wm_focus == win, win->h);
 285         } }
 286         for (list_t *lflt = dpy->flts; lflt; lflt = lflt->next) {
 287                 flt_t *flt = lflt->data;
 288                 printf("    flt:   <%-9p [%p->%p] >%-9p focus=%d%d    - %d,%d %dx%d \n",
 289                                 lflt->prev, lflt, lflt->data, lflt->next,
 290                                 dpy->flt == flt, wm_focus == flt->win,
 291                                 flt->x, flt->y, flt->h, flt->w);
 292         }  } }
 293 }
 294
 295 /* Cleanly remove a window from a tag
 296  *   Determines the new focused row/col
 297  *   Prunes empty lists */
 298 static layer_t cut_win(win_t *win, tag_t *tag)
 299 {
 300         list_t *ldpy, *lcol, *lrow, *lflt;
 301         layer_t layer = searchl(tag, win, &ldpy, &lcol, &lrow, &lflt);
 302
 303         dpy_t  *dpy   = DPY(ldpy);
 304         if (layer == tiling) {
 305                 col_t  *col  = COL(lcol);
 306                 col->row  = lrow->prev ? lrow->prev->data :
 307                             lrow->next ? lrow->next->data : NULL;
 308                 col->rows = list_remove(col->rows, lrow);
 309                 if (col->rows == NULL && (lcol->next || lcol->prev)) {
 310                         dpy->col  = lcol->prev ? lcol->prev->data :
 311                                     lcol->next ? lcol->next->data : NULL;
 312                         dpy->cols = list_remove(dpy->cols, lcol);
 313                 }
 314         }
 315
 316         if (layer == floating) {
 317                 dpy->flts = list_remove(dpy->flts, lflt);
 318                 dpy->flt  = dpy->flts ? list_last(dpy->flts)->data : NULL;
 319                 if (!dpy->flt && dpy->col && dpy->col->row)
 320                         dpy->layer = tiling;
 321         }
 322
 323         return layer;
 324 }
 325
 326 /* Insert a window into the tiling layer
 327  *   The window is added immediately after the
 328  *   columns currently focused row */
 329 static void put_win_col(win_t *win, tag_t *tag, dpy_t *dpy, col_t *col)
 330 {
 331         row_t *row = new0(row_t);
 332         row->win = win;
 333
 334         if (col == NULL) {
 335                 col = new0(col_t);
 336                 dpy->cols = list_insert(dpy->cols, col);
 337         }
 338
 339         int nrows = list_length(col->rows);
 340         if (col->row) {
 341                 list_t *prev = list_find(col->rows, col->row);
 342                 list_insert_after(prev, row);
 343         } else {
 344                 col->rows = list_insert(col->rows, row);
 345         }
 346         tag->dpy           = dpy;
 347         tag->dpy->col      = col;
 348         tag->dpy->col->row = row;
 349         tag->dpy->layer    = tiling;
 350
 351         row->height = dpy->geom->h / MAX(nrows,1);
 352         if (nrows == 0) {
 353                 int ncols = list_length(dpy->cols);
 354                 col->width = dpy->geom->w / MAX(ncols-1,1);
 355         }
 356 }
 357
 358 /* Insert a window into the floating layer */
 359 static void put_win_flt(win_t *win, tag_t *tag, dpy_t *dpy)
 360 {
 361         flt_t *flt = new0(flt_t);
 362         flt->win = win;
 363         flt->w   = dpy->geom->w / 2;
 364         flt->h   = dpy->geom->h / 2;
 365         flt->x   = dpy->geom->x + flt->w / 2;
 366         flt->y   = dpy->geom->y + flt->h / 2;
 367         if (dpy->flt) {
 368                 flt->x = dpy->flt->x + 20;
 369                 flt->y = dpy->flt->y + 20;
 370         }
 371         dpy->flts = list_append(dpy->flts, flt);
 372         tag->dpy        = dpy;
 373         tag->dpy->flt   = flt;
 374         tag->dpy->layer = floating;
 375 }
 376
 377 /* Insert a window into a tag */
 378 static void put_win(win_t *win, tag_t *tag, layer_t layer)
 379 {
 380         if (layer == tiling)
 381                 put_win_col(win, tag, tag->dpy, tag->dpy->col);
 382         if (layer == floating)
 383                 put_win_flt(win, tag, tag->dpy);
 384 }
 385
 386 /* Move a window up, down, left, or right
 387  *   This handles moving with a column, between
 388  *   columns, and between multiple monitors. */
 389 static void shift_window(win_t *win, int col, int row)
 390 {
 391         if (!win) return;
 392         printf("shift_window: %p - %+d,%+d\n", win, col, row);
 393         print_txt();
 394         printf("shift_window: >>>\n");
 395         list_t *ldpy, *lcol, *lrow, *lflt;
 396         if (tiling != searchl(wm_tag, win, &ldpy, &lcol, &lrow, &lflt))
 397                 return;
 398         dpy_t *dpy = ldpy->data;
 399         if (row != 0) {
 400                 /* Move with a column, just swap rows */
 401                 list_t *src = lrow, *dst = NULL;
 402                 if (row < 0) dst = src->prev;
 403                 if (row > 0) dst = src->next;
 404                 if (src && dst) {
 405                         printf("swap: %p <-> %p\n", src->data, dst->data);
 406                         row_t *tmp = src->data;
 407                         src->data = dst->data;
 408                         dst->data = tmp;
 409                         goto update;
 410                 }
 411         } else {
 412                 /* Moving between columns */
 413                 int onlyrow = !lrow->prev && !lrow->next;
 414                 list_t *src = lcol, *dst = NULL;
 415                 if (col < 0) {
 416                         if (src->prev) {
 417                                 /* Normal move between columns */
 418                                 dst = src->prev;
 419                         } else if (!onlyrow) {
 420                                 /* Create new column */
 421                                 dpy->cols = list_insert(dpy->cols, new0(col_t));
 422                                 dst = src->prev;
 423                         } else if (ldpy->prev) {
 424                                 /* Move to next monitor */
 425                                 dpy = ldpy->prev->data;
 426                                 dst = list_last(dpy->cols);
 427                         } else {
 428                                 /* We, shall, not, be,
 429                                  * we shall not be moved */
 430                                 return;
 431                         }
 432                 }
 433                 if (col > 0) {
 434                         if (src->next) {
 435                                 dst = src->next;
 436                         } else if (!onlyrow) {
 437                                 dpy->cols = list_append(dpy->cols, new0(col_t));
 438                                 dst = src->next;
 439                         } else if (ldpy->next) {
 440                                 dpy = ldpy->next->data;
 441                                 dst = dpy->cols;
 442                         } else {
 443                                 return;
 444                         }
 445                 }
 446                 cut_win(win, wm_tag);
 447                 put_win_col(win, wm_tag, dpy, dst ? dst->data : NULL);
 448                 goto update;
 449         }
 450 update:
 451         print_txt();
 452         wm_update();
 453 }
 454
 455 /* Get next/prev item, with wraparound */
 456 static list_t *get_next(list_t *list, int forward)
 457 {
 458         list_t *next = forward ? list->next : list->prev;
 459         if (next == NULL) {
 460                 next = list;
 461                 while ((list = forward ? next->prev : next->next))
 462                         next = list;
 463         }
 464         return next;
 465 }
 466
 467 /* Move keyboard focus in a given direction */
 468 static void shift_focus(int cols, int rows)
 469 {
 470         printf("shift_focus: %+d,%+d\n", cols, rows);
 471         if (rows != 0 && wm_focus) {
 472                 /* Move focus up/down */
 473                 list_t *dpy, *col, *row;
 474                 if (tiling != searchl(wm_tag, wm_focus, &dpy, &col, &row, NULL))
 475                         return;
 476                 row_t *next = get_next(row, rows > 0)->data;
 477                 set_focus(next->win);
 478                 if (COL(col)->mode != split)
 479                         wm_update();
 480         }
 481         if (cols != 0) {
 482                 /* Move focus left/right */
 483                 list_t *dpy, *col, *row, *ndpy, *ncol = NULL;
 484                 if (wm_focus) {
 485                         /* Currently focused on a window */
 486                         if (tiling != searchl(wm_tag, wm_focus, &dpy, &col, &row, NULL))
 487                                 return;
 488                         ncol = cols > 0 ? col->next : col->prev;
 489                 } else {
 490                         /* Currently focused on an empty display */
 491                         dpy = list_find(wm_tag->dpys, wm_dpy);
 492                 }
 493                 if (ncol == NULL) {
 494                         /* Moving focus to a different display */
 495                         ndpy = get_next(dpy, cols > 0);
 496                         ncol = cols > 0 ? DPY(ndpy)->cols :
 497                                 list_last(DPY(ndpy)->cols);
 498                         wm_dpy = ndpy->data;
 499                 }
 500                 if (ncol && COL(ncol) && COL(ncol)->row)
 501                         set_focus(COL(ncol)->row->win);
 502                 else
 503                         sys_focus(wm->root);
 504         }
 505 }
 506
 507 /* Raise the window in the floating */
 508 static void raise_float(win_t *win)
 509 {
 510         printf("raise_float: %p\n", win);
 511         list_t *cur;
 512         for (cur = wm_dpy->flts; cur; cur = cur->next)
 513                 if (FLT(cur)->win == win)
 514                         break;
 515         if (cur) {
 516                 flt_t *flt = cur->data;
 517                 wm_dpy->flts = list_remove(wm_dpy->flts, cur);
 518                 wm_dpy->flts = list_append(wm_dpy->flts, flt);
 519         }
 520         sys_raise(win);
 521 }
 522
 523 /* Toggle between floating and tiling layers */
 524 static void switch_layer(void)
 525 {
 526         printf("switch_float: %p %d\n",
 527                         wm_dpy, wm_dpy->layer);
 528         wm_dpy->layer = !wm_dpy->layer;
 529         wm_update();
 530 }
 531
 532 /* Move current window between floating and tiling layers */
 533 static void set_layer(win_t *win)
 534 {
 535         if (!win) return;
 536         printf("set_float: %p %p\n", wm_dpy, win);
 537         wm_dpy->layer = !cut_win(win, wm_tag);
 538         put_win(win, wm_tag, wm_dpy->layer);
 539         wm_update();
 540 }
 541
 542 /* Allocate a new tag */
 543 static tag_t *tag_new(list_t *screens, int name)
 544 {
 545         tag_t *tag = new0(tag_t);
 546         tag->name  = name;
 547         for (list_t *cur = screens; cur; cur = cur->next) {
 548                 dpy_t *dpy  = new0(dpy_t);
 549                 dpy->geom = cur->data;
 550                 tag->dpys = list_append(tag->dpys, dpy);
 551         }
 552         tag->dpy  = tag->dpys->data;
 553         return tag;
 554 }
 555
 556 /* Search for a tag
 557  *   If it does not exist it is based on the
 558  *   display geometry in wm->screens */
 559 static tag_t *tag_find(int name)
 560 {
 561         tag_t *tag = NULL;
 562         for (list_t *cur = wm->tags; cur; cur = cur->next)
 563                 if (name == TAG(cur)->name) {
 564                         tag = cur->data;
 565                         break;
 566                 }
 567         if (!tag) {
 568                 tag = tag_new(wm->screens, name);
 569                 wm->tags = list_append(wm->tags, tag);
 570         }
 571         return tag;
 572 }
 573
 574 /* Move the window from the current tag to the new tag
 575  *   Unlike wmii, only remove the current tag, not all tags */
 576 static void tag_set(win_t *win, int name)
 577 {
 578         printf("tag_set: %p %d\n", win, name);
 579         if (wm_tag->name == name)
 580                 return;
 581         tag_t *tag = tag_find(name);
 582         layer_t layer = cut_win(win, wm_tag);
 583         put_win(win, tag, layer);
 584         set_focus(wm_focus);
 585 }
 586
 587 /* Switch to a different tag */
 588 static void tag_switch(int name)
 589 {
 590         printf("tag_switch: %d\n", name);
 591         if ((wm_col == NULL || wm_row == NULL) && wm_flt == NULL)
 592                 wm->tags = list_remove(wm->tags,
 593                                 list_find(wm->tags, wm_tag));
 594         wm_tag = tag_find(name);
 595 }
 596
 597 /* Tile all windows in the given display
 598  *   This performs all the actual window tiling
 599  *   Currently supports  split, stack and maximized modes */
 600 static void wm_update_cols(dpy_t *dpy)
 601 {
 602         int  x=0,  y=0; // Current window top-left position
 603         int tx=0, ty=0; // Total size (sum of initial col widths and row heights w/o margin)
 604         int mx=0, my=0; // Maximum usable size (screen size minus margins)
 605         int       sy=0; // Stack size (height of focused stack window)
 606
 607         /* Scale horizontally */
 608         x  = dpy->geom->x;
 609         mx = dpy->geom->w - (list_length(dpy->cols)+1)*MARGIN;
 610         for (list_t *lcol = dpy->cols; lcol; lcol = lcol->next)
 611                 tx += COL(lcol)->width;
 612         for (list_t *lcol = dpy->cols; lcol; lcol = lcol->next)
 613                 COL(lcol)->width *= (float)mx / tx;
 614
 615         /* Scale each column vertically */
 616         for (list_t *lcol = dpy->cols; lcol; lcol = lcol->next) {
 617                 col_t *col = lcol->data;
 618                 int nrows = list_length(col->rows);
 619                 ty = 0;
 620                 for (list_t *lrow = col->rows; lrow; lrow = lrow->next)
 621                         ty += ROW(lrow)->height;
 622                 y  = dpy->geom->y;
 623                 my = dpy->geom->h - (MARGIN + (nrows-1)* MARGIN    + MARGIN);
 624                 sy = dpy->geom->h - (MARGIN + (nrows-1)*(MARGIN/2) + MARGIN)
 625                                   -           (nrows-1)* STACK;
 626                 for (list_t *lrow = col->rows; lrow; lrow = lrow->next) {
 627                         win_t *win = ROW(lrow)->win;
 628                         win->h = ROW(lrow)->height;
 629                         int height = 0;
 630                         switch (col->mode) {
 631                         case split:
 632                                 sys_move(win, x+MARGIN, y+MARGIN,
 633                                         col->width, win->h * ((float)my / ty));
 634                                 height = win->h;
 635                                 y += height + MARGIN;
 636                                 break;
 637                         case stack:
 638                                 if (lrow->next && ROW(lrow->next)->win == col->row->win) {
 639                                         /* Hack to prevent flashing */
 640                                         win_t *next = ROW(lrow->next)->win;
 641                                         sys_move(next, x+MARGIN, y+MARGIN+STACK+MARGIN/2,
 642                                                 col->width, sy);
 643                                 }
 644                                 height = win == col->row->win ? sy : STACK;
 645                                 sys_move(win, x+MARGIN, y+MARGIN,
 646                                         col->width, height);
 647                                 y += height + (MARGIN/2);
 648                                 break;
 649                         case max:
 650                         case tab:
 651                                 sys_move(win, x+MARGIN, 0+MARGIN,
 652                                         col->width, dpy->geom->h-2*MARGIN);
 653                                 if (col->row->win == win)
 654                                         sys_raise(win);
 655                                 break;
 656                         }
 657                         ROW(lrow)->height = win->h;
 658                 }
 659                 x += col->width + MARGIN;
 660         }
 661 }
 662
 663 /*******************************
 664  * Window management functions *
 665  *******************************/
 666 void wm_update(void)
 667 {
 668         /* Show/hide tags */
 669         tag_foreach_col(wm_tag, dpy, col, row, win)
 670                 sys_show(win, st_show);
 671         tag_foreach_flt(wm_tag, dpy, flt, win)
 672                 sys_show(win, st_show);
 673         for (list_t *tag = wm ->tags; tag; tag = tag->next)
 674                 if (tag->data != wm_tag) {
 675                         tag_foreach_col(TAG(tag), dpy, col, row, win)
 676                                         sys_show(win, st_hide);
 677                         tag_foreach_flt(TAG(tag), dpy, flt, win)
 678                                         sys_show(win, st_hide);
 679                 }
 680
 681         /* Refresh the display */
 682         for (list_t *ldpy = wm_tag->dpys; ldpy; ldpy = ldpy->next)
 683                 wm_update_cols(ldpy->data);
 684         tag_foreach_flt(wm_tag, ldpy, lflt, win) {
 685                 flt_t *flt = lflt->data;
 686                 sys_move(win, flt->x, flt->y, flt->w, flt->h);
 687                 sys_raise(flt->win);
 688         }
 689         if (wm_focus)
 690                 set_focus(wm_focus);
 691 }
 692
 693 int wm_handle_key(win_t *win, Key_t key, mod_t mod, ptr_t ptr)
 694 {
 695         if (!win || win == wm_dpy->geom) return 0;
 696         //printf("wm_handle_key: %p - %x %c%c%c%c%c\n", win, key,
 697         //      mod.up    ? '^' : 'v',
 698         //      mod.alt   ? 'a' : '-',
 699         //      mod.ctrl  ? 'c' : '-',
 700         //      mod.shift ? 's' : '-',
 701         //      mod.win   ? 'w' : '-');
 702
 703         /* Mouse movement */
 704         if (key == key_mouse1)
 705                 raise_float(win);
 706         if (key_mouse0 <= key && key <= key_mouse7) {
 707                 if (key == key_mouse1 && mod.MODKEY && !mod.up)
 708                         return set_move(win,ptr,move),   1;
 709                 if (key == key_mouse3 && mod.MODKEY && !mod.up)
 710                         return set_move(win,ptr,resize), 1;
 711                 if (move_mode != none && mod.up)
 712                         return set_move(win,ptr,none),   1;
 713                 if (key == key_mouse1 && !mod.up && win->h == STACK)
 714                         return wm_update(),              0;
 715                 return 0;
 716         }
 717
 718         /* Only handle key-down */
 719         if (mod.up)
 720                 return 0;
 721
 722         /* Misc */
 723         if (mod.MODKEY) {
 724 #ifdef DEBUG
 725                 if (key == key_f1) return raise_float(win), 1;
 726                 if (key == key_f2) return set_focus(win), 1;
 727                 if (key == key_f3) return sys_show(win, st_show), 1;
 728                 if (key == key_f4) return sys_show(win, st_hide), 1;
 729 #endif
 730                 if (key == key_f5) return wm_update(),    1;
 731                 if (key == key_f6) return print_txt(),    1;
 732         }
 733
 734         /* Floating layer */
 735         if (key == ' ') {
 736                 if (mod.MODKEY && mod.shift)
 737                         return set_layer(win), 1;
 738                 if (mod.MODKEY)
 739                         return switch_layer(), 1;
 740         }
 741
 742         /* Movement commands */
 743         if (mod.MODKEY && mod.shift) {
 744                 switch (key) {
 745                 case 'h': return shift_window(wm_focus,-1, 0), 1;
 746                 case 'j': return shift_window(wm_focus, 0,+1), 1;
 747                 case 'k': return shift_window(wm_focus, 0,-1), 1;
 748                 case 'l': return shift_window(wm_focus,+1, 0), 1;
 749                 default: break;
 750                 }
 751         }
 752         else if (mod.MODKEY) {
 753                 switch (key) {
 754                 case 'h': return shift_focus(-1, 0), 1;
 755                 case 'j': return shift_focus( 0,+1), 1;
 756                 case 'k': return shift_focus( 0,-1), 1;
 757                 case 'l': return shift_focus(+1, 0), 1;
 758                 default: break;
 759                 }
 760         }
 761
 762         /* Column mode commands */
 763         if (mod.MODKEY) {
 764                 switch (key) {
 765                 case 'd': return set_mode(win, split), 1;
 766                 case 's': return set_mode(win, stack), 1;
 767                 case 'm': return set_mode(win, max),   1;
 768                 case 't': return set_mode(win, tab),   1;
 769                 default: break;
 770                 }
 771         }
 772
 773         /* Tag switching */
 774         if (mod.MODKEY && '0' <= key && key <= '9') {
 775                 int name = key - '0';
 776                 if (mod.shift)
 777                         tag_set(win, name);
 778                 else
 779                         tag_switch(name);
 780                 wm_update();
 781         }
 782
 783         /* Focus change */
 784         if (key == key_enter)
 785                 return set_focus(win), 1;
 786
 787         if (key_mouse0 <= key && key <= key_mouse7)
 788                 return set_focus(win), 0;
 789
 790         /* Reset focus after after focus change,
 791          * not sure what is causing the focus change in the first place
 792          * but preventing that would be a better solution */
 793         if (key == key_focus)
 794                 sys_focus(wm_focus ?: wm->root);
 795
 796         return 0;
 797 }
 798
 799 int wm_handle_ptr(win_t *cwin, ptr_t ptr)
 800 {
 801         //printf("wm_handle_ptr: %p - %d,%d %d,%d (%d) -- \n",
 802         //              cwin, ptr.x, ptr.y, ptr.rx, ptr.ry, move_mode);
 803
 804         if (move_mode == none)
 805                 return 0;
 806
 807         int dx = ptr.rx - move_prev.rx;
 808         int dy = ptr.ry - move_prev.ry;
 809         move_prev = ptr;
 810
 811         if (move_layer == tiling && move_mode == resize) {
 812                 list_t *vert = move_dir.v < 0 ? move_lrow->prev : move_lrow->next;
 813                 list_t *horz = move_dir.h < 0 ? move_lcol->prev : move_lcol->next;
 814                 if (vert) {
 815                         ROW(move_lrow)->height += move_dir.v * dy;
 816                         ROW(vert)->height      -= move_dir.v * dy;
 817                 }
 818                 if (horz) {
 819                         COL(move_lcol)->width  += move_dir.h * dx;
 820                         COL(horz)->width       -= move_dir.h * dx;
 821                 }
 822                 wm_update();
 823         }
 824
 825         if (move_layer == floating) {
 826                 flt_t *flt = move_lflt->data;
 827                 win_t *win = flt->win;
 828                 if (move_mode == move)
 829                         sys_move(win, win->x+dx, win->y+dy, win->w, win->h);
 830                 else if (move_mode == resize)
 831                         sys_move(win,
 832                                 win->x + dx * (move_dir.h < 0),
 833                                 win->y + dy * (move_dir.v < 0),
 834                                 win->w + dx *  move_dir.h,
 835                                 win->h + dy *  move_dir.v);
 836                 flt->x = win->x; flt->y = win->y;
 837                 flt->w = win->w; flt->h = win->h;
 838         }
 839
 840         return 0;
 841 }
 842
 843 void wm_insert(win_t *win)
 844 {
 845         printf("wm_insert: %p\n", win);
 846         print_txt();
 847
 848         /* Initialize window */
 849         win->wm = new0(win_wm_t);
 850         sys_watch(win, key_enter,  MOD());
 851         sys_watch(win, key_focus,  MOD());
 852         sys_watch(win, key_mouse1, MOD());
 853
 854         /* Add to screen */
 855         put_win(win, wm_tag, wm_dpy->layer);
 856
 857         /* Arrange */
 858         wm_update();
 859         set_focus(wm_focus);
 860         print_txt();
 861 }
 862
 863 void wm_remove(win_t *win)
 864 {
 865         printf("wm_remove: %p\n", win);
 866         print_txt();
 867         for (list_t *tag = wm->tags; tag; tag = tag->next)
 868                 cut_win(win, tag->data);
 869         set_focus(wm_focus);
 870         wm_update();
 871         print_txt();
 872 }
 873 void wm_init(win_t *root)
 874 {
 875         printf("wm_init: %p\n", root);
 876
 877         /* Hack, fix screen order */
 878         list_t *screens = sys_info(root);
 879         list_t *left  = screens;
 880         list_t *right = screens->next;
 881         if (left && right && WIN(left)->x > WIN(right)->x) {
 882                 void *tmp   = left->data;
 883                 left->data  = right->data;
 884                 right->data = tmp;
 885         }
 886
 887         wm          = new0(wm_t);
 888         wm->root    = root;
 889         wm->screens = screens;
 890         wm->tag     = tag_new(wm->screens, 1);
 891         wm->tags    = list_insert(NULL, wm->tag);
 892
 893         Key_t keys_e[] = {key_enter, key_focus};
 894         Key_t keys_s[] = {'h', 'j', 'k', 'l', ' ',
 895                 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'};
 896         Key_t keys_m[] = {'h', 'j', 'k', 'l', 'd', 's', 'm', 't', ' ',
 897                 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
 898                 key_f1, key_f2, key_f3, key_f4, key_f5, key_f6,
 899                 key_mouse1, key_mouse3};
 900         for (int i = 0; i < countof(keys_e); i++)
 901                 sys_watch(root, keys_e[i],  MOD());
 902         for (int i = 0; i < countof(keys_m); i++)
 903                 sys_watch(root, keys_m[i], MOD(.MODKEY=1));
 904         for (int i = 0; i < countof(keys_s); i++)
 905                 sys_watch(root, keys_s[i], MOD(.MODKEY=1,.shift=1));
 906 }