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

   1 /*
   2  * Copyright (c) 2011, Andy Spencer <andy753421@gmail.com>
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  */
  15
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18
  19 #include "util.h"
  20 #include "sys.h"
  21 #include "wm.h"
  22
  23 #ifndef MODKEY
  24 #define MODKEY alt
  25 #endif
  26 #ifndef MARGIN
  27 #define MARGIN 0
  28 #endif
  29 #ifndef STACK
  30 #define STACK  25
  31 #endif
  32
  33 /* Enums */
  34 typedef enum {
  35         none, move, resize
  36 } drag_t;
  37
  38 typedef enum {
  39         split, stack, max, tab
  40 } mode_t;
  41
  42 typedef enum {
  43         tiling, floating
  44 } layer_t;
  45
  46 /* Window structure types */
  47 struct win_wm { };
  48
  49 typedef struct {
  50         win_t  *win;     // the window
  51         int     height;  // win height in _this_ tag
  52 } row_t;
  53
  54 typedef struct {
  55         list_t *rows;    // of row_t
  56         row_t  *row;     // focused row
  57         int     width;   // column width
  58         mode_t  mode;    // display mode
  59 } col_t;
  60
  61 typedef struct {
  62         win_t *win;      // the window
  63         int x, y, w, h;  // position of window (in this tag)
  64 } flt_t;
  65
  66 typedef struct {
  67         list_t *cols;    // of col_t
  68         col_t  *col;     // focused col
  69         list_t *flts;    // of flt_t
  70         flt_t  *flt;     // focused flt
  71         layer_t layer;   // focused layer
  72         win_t  *geom;    // display size and position
  73 } dpy_t;
  74
  75 typedef struct {
  76         list_t *dpys;    // of dpy_t
  77         dpy_t  *dpy;     // focused dpy
  78         int     name;    // tag name
  79 } tag_t;
  80
  81 typedef struct {
  82         list_t *tags;    // of tag_t
  83         tag_t  *tag;     // focused tag
  84         win_t  *root;    // root/background window
  85         list_t *screens; // display geometry
  86 } wm_t;
  87
  88 #define WIN(node) ((win_t*)(node)->data)
  89 #define ROW(node) ((row_t*)(node)->data)
  90 #define COL(node) ((col_t*)(node)->data)
  91 #define FLT(node) ((flt_t*)(node)->data)
  92 #define DPY(node) ((dpy_t*)(node)->data)
  93 #define TAG(node) ((tag_t*)(node)->data)
  94
  95 #define tag_foreach_col(tag, dpy, col, row, win) \
  96         for (list_t *dpy =     tag ->dpys; dpy; dpy = dpy->next) \
  97         for (list_t *col = DPY(dpy)->cols; col; col = col->next) \
  98         for (list_t *row = COL(col)->rows; row; row = row->next) \
  99         for (win_t  *win = ROW(row)->win;  win; win = NULL)
 100
 101 #define tag_foreach_flt(tag, dpy, flt, win) \
 102         for (list_t *dpy =     tag ->dpys; dpy; dpy = dpy->next) \
 103         for (list_t *flt = DPY(dpy)->flts; flt; flt = flt->next) \
 104         for (win_t  *win = FLT(flt)->win;  win; win = NULL)      \
 105
 106 /* Window management data
 107  *   wm_* macros represent the currently focused item
 108  *   _only_ wm_focus protects against NULL pointers */
 109 static wm_t *wm;
 110 #define wm_tag   wm->tag
 111 #define wm_dpy   wm->tag->dpy
 112 #define wm_col   wm->tag->dpy->col
 113 #define wm_row   wm->tag->dpy->col->row
 114 #define wm_flt   wm->tag->dpy->flt
 115 #define wm_focus get_focus()
 116
 117 /* Mouse drag data */
 118 static drag_t  move_mode;
 119 static list_t *move_lrow;
 120 static list_t *move_lcol;
 121 static list_t *move_lflt;
 122 static ptr_t   move_prev;
 123 static layer_t move_layer;
 124 static struct { int v, h; } move_dir;
 125
 126 /********************
 127  * Helper functions *
 128  ********************/
 129 static win_t *get_focus(void)
 130 {
 131         if (!wm_tag || !wm_dpy)
 132                 return NULL;
 133         switch (wm_dpy->layer) {
 134         case tiling:
 135                 return wm_col && wm_row ? wm_row->win : NULL;
 136         case floating:
 137                 return wm_flt ? wm_flt->win : NULL;
 138         }
 139         return NULL;
 140 }
 141
 142 /* Search for the target window in a given tag
 143  * win may exist in other tags as well */
 144 static int searchl(tag_t *tag, win_t *target,
 145                 list_t **_dpy, list_t **_col, list_t **_row, list_t **_flt)
 146 {
 147         tag_foreach_col(tag, dpy, col, row, win) {
 148                 if (win == target) {
 149                         if (_dpy) *_dpy = dpy;
 150                         if (_col) *_col = col;
 151                         if (_row) *_row = row;
 152                         return tiling;
 153                 }
 154         }
 155         tag_foreach_flt(tag, dpy, flt, win) {
 156                 if (win == target) {
 157                         if (_dpy) *_dpy = dpy;
 158                         if (_flt) *_flt = flt;
 159                         return floating;
 160                 }
 161         }
 162         return -1;
 163 }
 164
 165 static int search(tag_t *tag, win_t *target,
 166                 dpy_t **_dpy, col_t **_col, row_t **_row, flt_t **_flt)
 167 {
 168         list_t *dpy, *col, *row, *flt;
 169         switch (searchl(tag, target, &dpy, &col, &row, &flt)) {
 170         case tiling:
 171                 if (_dpy) *_dpy = DPY(dpy);
 172                 if (_col) *_col = COL(col);
 173                 if (_row) *_row = ROW(row);
 174                 return tiling;
 175         case floating:
 176                 if (_dpy) *_dpy = DPY(dpy);
 177                 if (_flt) *_flt = FLT(flt);
 178                 return floating;
 179         }
 180         return -1;
 181 }
 182
 183 /* Set the mode for the windows column in the current tag */
 184 static void set_mode(win_t *win, mode_t mode)
 185 {
 186         col_t *col;
 187         if (tiling != search(wm_tag, win, NULL, &col, NULL, NULL))
 188                 return;
 189         printf("set_mode: %p, %d -> %d\n",
 190                         col, col->mode, mode);
 191         col->mode = mode;
 192         if (col->mode == split)
 193                 for (list_t *cur = col->rows; cur; cur = cur->next) {
 194                         row_t *row = cur->data;
 195                         row->height = wm_dpy->geom->h;
 196                 }
 197         wm_update();
 198 }
 199
 200 /* Focus the window in the current tag and record
 201  * it as the currently focused window */
 202 static void set_focus(win_t *win)
 203 {
 204         if (win == NULL || win == wm->root) {
 205                 sys_focus(wm->root);
 206                 return;
 207         }
 208
 209         /* - Only grab mouse button on unfocused window,
 210          *   this prevents stealing all mouse clicks from client windows,
 211          * - A better way may be to re-send mouse clicks to client windows
 212          *   using the return value from wm_handle_key */
 213         for (int i = key_mouse1; i < key_mouse7; i++) {
 214                 if (wm_focus)
 215                         sys_watch(wm_focus, i, MOD());
 216                 sys_unwatch(win, i, MOD());
 217         }
 218
 219         dpy_t *dpy; col_t *col; row_t *row; flt_t *flt;
 220         switch (search(wm_tag, win, &dpy, &col, &row, &flt)) {
 221         case tiling:
 222                 wm_dpy = dpy;
 223                 wm_col = col;
 224                 wm_row = row;
 225                 dpy->layer = tiling;
 226                 break;
 227         case floating:
 228                 wm_dpy = dpy;
 229                 wm_flt = flt;
 230                 dpy->layer = floating;
 231                 break;
 232         }
 233         sys_focus(win);
 234 }
 235
 236 /* Save mouse start location when moving/resizing windows */
 237 static void set_move(win_t *win, ptr_t ptr, drag_t drag)
 238 {
 239         printf("set_move: %d - %p@%d,%d\n",
 240                         drag, win, ptr.rx, ptr.ry);
 241         move_mode = drag;
 242         if (drag == move || drag == resize) {
 243                 move_layer = searchl(wm_tag, win, NULL,
 244                                 &move_lcol, &move_lrow, &move_lflt);
 245                 if (move_layer < 0)
 246                         return;
 247                 move_prev = ptr;
 248                 int midy = win->y + (win->h/2);
 249                 int midx = win->x + (win->w/2);
 250                 move_dir.v = ptr.ry < midy ? -1 : +1;
 251                 move_dir.h = ptr.rx < midx ? -1 : +1;
 252         }
 253 }
 254
 255 /* Print a text representation of the window layout
 256  * Quite useful for debugging */
 257 static void print_txt(void)
 258 {
 259         for (list_t *ltag = wm->tags; ltag; ltag = ltag->next) {
 260                 tag_t *tag = ltag->data;
 261                 printf("tag:       <%-9p [%p->%p] >%-9p d=%-9p - %d\n",
 262                                 ltag->prev, ltag, ltag->data, ltag->next,
 263                                 tag->dpy, tag->name);
 264         for (list_t *ldpy = tag->dpys; ldpy; ldpy = ldpy->next) {
 265                 dpy_t *dpy  = ldpy->data;
 266                 win_t *geom = dpy->geom;
 267                 printf("  dpy:     <%-9p [%p->%p] >%-9p %c=%-9p - %d,%d %dx%d\n",
 268                                 ldpy->prev, ldpy, ldpy->data, ldpy->next,
 269                                 dpy->layer == tiling   ? 'c' : 'f',
 270                                 dpy->layer == tiling   ? (void*)dpy->col : (void*)dpy->flt,
 271                                 geom->x, geom->y, geom->h, geom->w);
 272         for (list_t *lcol = dpy->cols; lcol; lcol = lcol->next) {
 273                 col_t *col = lcol->data;
 274                 printf("    col:   <%-9p [%p->%p] >%-9p r=%-9p - %dpx @ %d\n",
 275                                 lcol->prev, lcol, lcol->data, lcol->next,
 276                                 col->row, col->width, col->mode);
 277         for (list_t *lrow = col->rows; lrow; lrow = lrow->next) {
 278                 row_t *row = lrow->data;
 279                 win_t *win = row->win;
 280                 printf("      win: <%-9p [%p>>%p] >%-9p focus=%d%d    - %4dpx \n",
 281                                 lrow->prev, lrow, win, lrow->next,
 282                                 col->row == row, wm_focus == win, win->h);
 283         } }
 284         for (list_t *lflt = dpy->flts; lflt; lflt = lflt->next) {
 285                 flt_t *flt = lflt->data;
 286                 win_t *win = flt->win;
 287                 printf("    flt:   <%-9p [%p>>%p] >%-9p focus=%d%d    - %d,%d %dx%d \n",
 288                                 lflt->prev, lflt, win, lflt->next,
 289                                 dpy->flt == flt, wm_focus == flt->win,
 290                                 flt->x, flt->y, flt->h, flt->w);
 291         }  } }
 292 }
 293
 294 /* Cleanly remove a window from a tag
 295  *   Determines the new focused row/col
 296  *   Prunes empty lists */
 297 static layer_t cut_win(win_t *win, tag_t *tag)
 298 {
 299         list_t *ldpy, *lcol, *lrow, *lflt;
 300         layer_t layer = searchl(tag, win, &ldpy, &lcol, &lrow, &lflt);
 301
 302         dpy_t  *dpy   = DPY(ldpy);
 303         if (layer == tiling) {
 304                 col_t  *col  = COL(lcol);
 305                 col->row  = lrow->prev ? lrow->prev->data :
 306                             lrow->next ? lrow->next->data : NULL;
 307                 col->rows = list_remove(col->rows, lrow);
 308                 if (col->rows == NULL && (lcol->next || lcol->prev)) {
 309                         dpy->col  = lcol->prev ? lcol->prev->data :
 310                                     lcol->next ? lcol->next->data : NULL;
 311                         dpy->cols = list_remove(dpy->cols, lcol);
 312                 }
 313         }
 314
 315         if (layer == floating) {
 316                 dpy->flts = list_remove(dpy->flts, lflt);
 317                 dpy->flt  = dpy->flts ? list_last(dpy->flts)->data : NULL;
 318                 if (!dpy->flt && dpy->col && dpy->col->row)
 319                         dpy->layer = tiling;
 320         }
 321
 322         return layer;
 323 }
 324
 325 /* Insert a window into the tiling layer
 326  *   The window is added immediately after the
 327  *   columns currently focused row */
 328 static void put_win_col(win_t *win, tag_t *tag, dpy_t *dpy, col_t *col)
 329 {
 330         row_t *row = new0(row_t);
 331         row->win = win;
 332
 333         if (col == NULL) {
 334                 col = new0(col_t);
 335                 dpy->cols = list_insert(dpy->cols, col);
 336         }
 337
 338         int nrows = list_length(col->rows);
 339         if (col->row) {
 340                 list_t *prev = list_find(col->rows, col->row);
 341                 list_insert_after(prev, row);
 342         } else {
 343                 col->rows = list_insert(col->rows, row);
 344         }
 345         tag->dpy           = dpy;
 346         tag->dpy->col      = col;
 347         tag->dpy->col->row = row;
 348         tag->dpy->layer    = tiling;
 349
 350         row->height = dpy->geom->h / MAX(nrows,1);
 351         if (nrows == 0) {
 352                 int ncols = list_length(dpy->cols);
 353                 col->width = dpy->geom->w / MAX(ncols-1,1);
 354         }
 355 }
 356
 357 /* Insert a window into the floating layer */
 358 static void put_win_flt(win_t *win, tag_t *tag, dpy_t *dpy)
 359 {
 360         flt_t *flt = new0(flt_t);
 361         flt->win = win;
 362         flt->w   = dpy->geom->w / 2;
 363         flt->h   = dpy->geom->h / 2;
 364         flt->x   = dpy->geom->x + flt->w / 2;
 365         flt->y   = dpy->geom->y + flt->h / 2;
 366         if (dpy->flt) {
 367                 flt->x = dpy->flt->x + 20;
 368                 flt->y = dpy->flt->y + 20;
 369         }
 370         dpy->flts = list_append(dpy->flts, flt);
 371         tag->dpy        = dpy;
 372         tag->dpy->flt   = flt;
 373         tag->dpy->layer = floating;
 374 }
 375
 376 /* Insert a window into a tag */
 377 static void put_win(win_t *win, tag_t *tag, layer_t layer)
 378 {
 379         if (layer == tiling)
 380                 put_win_col(win, tag, tag->dpy, tag->dpy->col);
 381         if (layer == floating)
 382                 put_win_flt(win, tag, tag->dpy);
 383 }
 384
 385 /* Move a window up, down, left, or right
 386  *   This handles moving with a column, between
 387  *   columns, and between multiple monitors. */
 388 static void shift_window(win_t *win, int col, int row)
 389 {
 390         if (!win) return;
 391         printf("shift_window: %p - %+d,%+d\n", win, col, row);
 392         print_txt();
 393         printf("shift_window: >>>\n");
 394         list_t *ldpy, *lcol, *lrow, *lflt;
 395         if (tiling != searchl(wm_tag, win, &ldpy, &lcol, &lrow, &lflt))
 396                 return;
 397         dpy_t *dpy = ldpy->data;
 398         if (row != 0) {
 399                 /* Move with a column, just swap rows */
 400                 list_t *src = lrow, *dst = NULL;
 401                 if (row < 0) dst = src->prev;
 402                 if (row > 0) dst = src->next;
 403                 if (src && dst) {
 404                         printf("swap: %p <-> %p\n", src->data, dst->data);
 405                         row_t *tmp = src->data;
 406                         src->data = dst->data;
 407                         dst->data = tmp;
 408                         goto update;
 409                 }
 410         } else {
 411                 /* Moving between columns */
 412                 int onlyrow = !lrow->prev && !lrow->next;
 413                 list_t *src = lcol, *dst = NULL;
 414                 if (col < 0) {
 415                         if (src->prev) {
 416                                 /* Normal move between columns */
 417                                 dst = src->prev;
 418                         } else if (!onlyrow) {
 419                                 /* Create new column */
 420                                 dpy->cols = list_insert(dpy->cols, new0(col_t));
 421                                 dst = src->prev;
 422                         } else if (ldpy->prev) {
 423                                 /* Move to next monitor */
 424                                 dpy = ldpy->prev->data;
 425                                 dst = list_last(dpy->cols);
 426                         } else {
 427                                 /* We, shall, not, be,
 428                                  * we shall not be moved */
 429                                 return;
 430                         }
 431                 }
 432                 if (col > 0) {
 433                         if (src->next) {
 434                                 dst = src->next;
 435                         } else if (!onlyrow) {
 436                                 dpy->cols = list_append(dpy->cols, new0(col_t));
 437                                 dst = src->next;
 438                         } else if (ldpy->next) {
 439                                 dpy = ldpy->next->data;
 440                                 dst = dpy->cols;
 441                         } else {
 442                                 return;
 443                         }
 444                 }
 445                 cut_win(win, wm_tag);
 446                 put_win_col(win, wm_tag, dpy, dst ? dst->data : NULL);
 447                 goto update;
 448         }
 449 update:
 450         print_txt();
 451         wm_update();
 452 }
 453
 454 /* Get next/prev item, with wraparound */
 455 static list_t *get_next(list_t *list, int forward)
 456 {
 457         list_t *next = forward ? list->next : list->prev;
 458         if (next == NULL) {
 459                 next = list;
 460                 while ((list = forward ? next->prev : next->next))
 461                         next = list;
 462         }
 463         return next;
 464 }
 465
 466 /* Move keyboard focus in a given direction */
 467 static void shift_focus(int cols, int rows)
 468 {
 469         printf("shift_focus: %+d,%+d\n", cols, rows);
 470         if (rows != 0 && wm_focus) {
 471                 /* Move focus up/down */
 472                 list_t *dpy, *col, *row;
 473                 if (tiling != searchl(wm_tag, wm_focus, &dpy, &col, &row, NULL))
 474                         return;
 475                 row_t *next = get_next(row, rows > 0)->data;
 476                 set_focus(next->win);
 477                 if (COL(col)->mode != split)
 478                         wm_update();
 479         }
 480         if (cols != 0) {
 481                 /* Move focus left/right */
 482                 list_t *dpy, *col, *row, *ndpy, *ncol = NULL;
 483                 if (wm_focus) {
 484                         /* Currently focused on a window */
 485                         if (tiling != searchl(wm_tag, wm_focus, &dpy, &col, &row, NULL))
 486                                 return;
 487                         ncol = cols > 0 ? col->next : col->prev;
 488                 } else {
 489                         /* Currently focused on an empty display */
 490                         dpy = list_find(wm_tag->dpys, wm_dpy);
 491                 }
 492                 if (ncol == NULL) {
 493                         /* Moving focus to a different display */
 494                         ndpy = get_next(dpy, cols > 0);
 495                         ncol = cols > 0 ? DPY(ndpy)->cols :
 496                                 list_last(DPY(ndpy)->cols);
 497                         wm_dpy = ndpy->data;
 498                 }
 499                 if (ncol && COL(ncol) && COL(ncol)->row)
 500                         set_focus(COL(ncol)->row->win);
 501                 else
 502                         sys_focus(wm->root);
 503         }
 504 }
 505
 506 /* Raise the window in the floating */
 507 static void raise_float(win_t *win)
 508 {
 509         printf("raise_float: %p\n", win);
 510         list_t *cur;
 511         for (cur = wm_dpy->flts; cur; cur = cur->next)
 512                 if (FLT(cur)->win == win)
 513                         break;
 514         if (cur) {
 515                 flt_t *flt = cur->data;
 516                 wm_dpy->flts = list_remove(wm_dpy->flts, cur);
 517                 wm_dpy->flts = list_append(wm_dpy->flts, flt);
 518                 sys_raise(win);
 519         }
 520 }
 521
 522 /* Toggle between floating and tiling layers */
 523 static void switch_layer(void)
 524 {
 525         printf("switch_float: %p %d\n",
 526                         wm_dpy, wm_dpy->layer);
 527         wm_dpy->layer = !wm_dpy->layer;
 528         wm_update();
 529 }
 530
 531 /* Move current window between floating and tiling layers */
 532 static void set_layer(win_t *win)
 533 {
 534         if (!win) return;
 535         printf("set_float: %p %p\n", wm_dpy, win);
 536         wm_dpy->layer = !cut_win(win, wm_tag);
 537         put_win(win, wm_tag, wm_dpy->layer);
 538         wm_update();
 539 }
 540
 541 /* Allocate a new tag */
 542 static tag_t *tag_new(list_t *screens, int name)
 543 {
 544         tag_t *tag = new0(tag_t);
 545         tag->name  = name;
 546         for (list_t *cur = screens; cur; cur = cur->next) {
 547                 dpy_t *dpy  = new0(dpy_t);
 548                 dpy->geom = cur->data;
 549                 tag->dpys = list_append(tag->dpys, dpy);
 550         }
 551         tag->dpy  = tag->dpys->data;
 552         return tag;
 553 }
 554
 555 /* Search for a tag
 556  *   If it does not exist it is based on the
 557  *   display geometry in wm->screens */
 558 static tag_t *tag_find(int name)
 559 {
 560         tag_t *tag = NULL;
 561         for (list_t *cur = wm->tags; cur; cur = cur->next)
 562                 if (name == TAG(cur)->name) {
 563                         tag = cur->data;
 564                         break;
 565                 }
 566         if (!tag) {
 567                 tag = tag_new(wm->screens, name);
 568                 wm->tags = list_append(wm->tags, tag);
 569         }
 570         return tag;
 571 }
 572
 573 /* Move the window from the current tag to the new tag
 574  *   Unlike wmii, only remove the current tag, not all tags */
 575 static void tag_set(win_t *win, int name)
 576 {
 577         printf("tag_set: %p %d\n", win, name);
 578         if (wm_tag->name == name)
 579                 return;
 580         tag_t *tag = tag_find(name);
 581         layer_t layer = cut_win(win, wm_tag);
 582         put_win(win, tag, layer);
 583         set_focus(wm_focus);
 584 }
 585
 586 /* Switch to a different tag */
 587 static void tag_switch(int name)
 588 {
 589         printf("tag_switch: %d\n", name);
 590         if ((wm_col == NULL || wm_row == NULL) && wm_flt == NULL)
 591                 wm->tags = list_remove(wm->tags,
 592                                 list_find(wm->tags, wm_tag));
 593         wm_tag = tag_find(name);
 594 }
 595
 596 /* Tile all windows in the given display
 597  *   This performs all the actual window tiling
 598  *   Currently supports  split, stack and maximized modes */
 599 static void wm_update_cols(dpy_t *dpy)
 600 {
 601         int  x=0,  y=0; // Current window top-left position
 602         int tx=0, ty=0; // Total size (sum of initial col widths and row heights w/o margin)
 603         int mx=0, my=0; // Maximum usable size (screen size minus margins)
 604         int       sy=0; // Stack size (height of focused stack window)
 605
 606         /* Scale horizontally */
 607         x  = dpy->geom->x;
 608         mx = dpy->geom->w - (list_length(dpy->cols)+1)*MARGIN;
 609         for (list_t *lcol = dpy->cols; lcol; lcol = lcol->next)
 610                 tx += COL(lcol)->width;
 611         for (list_t *lcol = dpy->cols; lcol; lcol = lcol->next)
 612                 COL(lcol)->width *= (float)mx / tx;
 613
 614         /* Scale each column vertically */
 615         win_t *focus = get_focus();
 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 (focus == 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
 853         /* Add to screen */
 854         put_win(win, wm_tag, wm_dpy->layer);
 855
 856         /* Arrange */
 857         wm_update();
 858         set_focus(wm_focus);
 859         print_txt();
 860 }
 861
 862 void wm_remove(win_t *win)
 863 {
 864         printf("wm_remove: %p\n", win);
 865         print_txt();
 866         for (list_t *tag = wm->tags; tag; tag = tag->next)
 867                 cut_win(win, tag->data);
 868         set_focus(wm_focus);
 869         wm_update();
 870         print_txt();
 871 }
 872 void wm_init(win_t *root)
 873 {
 874         printf("wm_init: %p\n", root);
 875
 876         /* Hack, fix screen order */
 877         list_t *screens = sys_info(root);
 878         list_t *left  = screens;
 879         list_t *right = screens->next;
 880         if (left && right && WIN(left)->x > WIN(right)->x) {
 881                 void *tmp   = left->data;
 882                 left->data  = right->data;
 883                 right->data = tmp;
 884         }
 885
 886         wm          = new0(wm_t);
 887         wm->root    = root;
 888         wm->screens = screens;
 889         wm->tag     = tag_new(wm->screens, 1);
 890         wm->tags    = list_insert(NULL, wm->tag);
 891
 892         Key_t keys_e[] = {key_enter, key_focus};
 893         Key_t keys_s[] = {'h', 'j', 'k', 'l', ' ',
 894                 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'};
 895         Key_t keys_m[] = {'h', 'j', 'k', 'l', 'd', 's', 'm', 't', ' ',
 896                 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
 897                 key_f1, key_f2, key_f3, key_f4, key_f5, key_f6,
 898                 key_mouse1, key_mouse3};
 899         for (int i = 0; i < countof(keys_e); i++)
 900                 sys_watch(root, keys_e[i],  MOD());
 901         for (int i = 0; i < countof(keys_m); i++)
 902                 sys_watch(root, keys_m[i], MOD(.MODKEY=1));
 903         for (int i = 0; i < countof(keys_s); i++)
 904                 sys_watch(root, keys_s[i], MOD(.MODKEY=1,.shift=1));
 905 }