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 "conf.h"
  21 #include "sys.h"
  22 #include "wm.h"
  23
  24 /* Configuration */
  25 #ifndef MODKEY
  26 #define MODKEY alt
  27 #endif
  28 static int MARGIN = 0;
  29 static int STACK  = 25;
  30
  31 /* Enums */
  32 typedef enum {
  33         none, move, resize
  34 } drag_t;
  35
  36 typedef enum {
  37         split, stack, max, tab
  38 } mode_t;
  39
  40 typedef enum {
  41         tiling, floating
  42 } layer_t;
  43
  44 /* Window structure types */
  45 struct win_wm { };
  46
  47 typedef struct {
  48         win_t  *win;     // the window
  49         int     height;  // win height in _this_ tag
  50 } row_t;
  51
  52 typedef struct {
  53         list_t *rows;    // of row_t
  54         row_t  *row;     // focused row
  55         int     width;   // column width
  56         mode_t  mode;    // display mode
  57 } col_t;
  58
  59 typedef struct {
  60         win_t *win;      // the window
  61         int x, y, w, h;  // position of window (in this tag)
  62 } flt_t;
  63
  64 typedef struct {
  65         list_t *cols;    // of col_t
  66         col_t  *col;     // focused col
  67         list_t *flts;    // of flt_t
  68         flt_t  *flt;     // focused flt
  69         layer_t layer;   // focused layer
  70         win_t  *geom;    // display size and position
  71 } dpy_t;
  72
  73 typedef struct {
  74         list_t *dpys;    // of dpy_t
  75         dpy_t  *dpy;     // focused dpy
  76         int     name;    // tag name
  77 } tag_t;
  78
  79 typedef struct {
  80         list_t *tags;    // of tag_t
  81         tag_t  *tag;     // focused tag
  82         win_t  *root;    // root/background window
  83         list_t *screens; // display geometry
  84 } wm_t;
  85
  86 #define WIN(node) ((win_t*)(node)->data)
  87 #define ROW(node) ((row_t*)(node)->data)
  88 #define COL(node) ((col_t*)(node)->data)
  89 #define FLT(node) ((flt_t*)(node)->data)
  90 #define DPY(node) ((dpy_t*)(node)->data)
  91 #define TAG(node) ((tag_t*)(node)->data)
  92
  93 #define tag_foreach_col(tag, dpy, col, row, win) \
  94         for (list_t *dpy =     tag ->dpys; dpy; dpy = dpy->next) \
  95         for (list_t *col = DPY(dpy)->cols; col; col = col->next) \
  96         for (list_t *row = COL(col)->rows; row; row = row->next) \
  97         for (win_t  *win = ROW(row)->win;  win; win = NULL)
  98
  99 #define tag_foreach_flt(tag, dpy, flt, win) \
 100         for (list_t *dpy =     tag ->dpys; dpy; dpy = dpy->next) \
 101         for (list_t *flt = DPY(dpy)->flts; flt; flt = flt->next) \
 102         for (win_t  *win = FLT(flt)->win;  win; win = NULL)      \
 103
 104 /* Window management data
 105  *   wm_* macros represent the currently focused item
 106  *   _only_ wm_focus protects against NULL pointers */
 107 static wm_t *wm;
 108 #define wm_tag   wm->tag
 109 #define wm_dpy   wm->tag->dpy
 110 #define wm_col   wm->tag->dpy->col
 111 #define wm_row   wm->tag->dpy->col->row
 112 #define wm_flt   wm->tag->dpy->flt
 113 #define wm_focus get_focus()
 114
 115 /* Mouse drag data */
 116 static drag_t  move_mode;
 117 static list_t *move_lrow;
 118 static list_t *move_lcol;
 119 static list_t *move_lflt;
 120 static ptr_t   move_prev;
 121 static layer_t move_layer;
 122 static struct { int v, h; } move_dir;
 123
 124 /********************
 125  * Helper functions *
 126  ********************/
 127 static win_t *get_focus(void)
 128 {
 129         if (!wm_tag || !wm_dpy)
 130                 return NULL;
 131         switch (wm_dpy->layer) {
 132         case tiling:
 133                 return wm_col && wm_row ? wm_row->win : NULL;
 134         case floating:
 135                 return wm_flt ? wm_flt->win : NULL;
 136         }
 137         return NULL;
 138 }
 139
 140 /* Search for the target window in a given tag
 141  * win may exist in other tags as well */
 142 static int searchl(tag_t *tag, win_t *target,
 143                 list_t **_dpy, list_t **_col, list_t **_row, list_t **_flt)
 144 {
 145         tag_foreach_col(tag, dpy, col, row, win) {
 146                 if (win == target) {
 147                         if (_dpy) *_dpy = dpy;
 148                         if (_col) *_col = col;
 149                         if (_row) *_row = row;
 150                         return tiling;
 151                 }
 152         }
 153         tag_foreach_flt(tag, dpy, flt, win) {
 154                 if (win == target) {
 155                         if (_dpy) *_dpy = dpy;
 156                         if (_flt) *_flt = flt;
 157                         return floating;
 158                 }
 159         }
 160         return -1;
 161 }
 162
 163 static int search(tag_t *tag, win_t *target,
 164                 dpy_t **_dpy, col_t **_col, row_t **_row, flt_t **_flt)
 165 {
 166         list_t *dpy, *col, *row, *flt;
 167         switch (searchl(tag, target, &dpy, &col, &row, &flt)) {
 168         case tiling:
 169                 if (_dpy) *_dpy = DPY(dpy);
 170                 if (_col) *_col = COL(col);
 171                 if (_row) *_row = ROW(row);
 172                 return tiling;
 173         case floating:
 174                 if (_dpy) *_dpy = DPY(dpy);
 175                 if (_flt) *_flt = FLT(flt);
 176                 return floating;
 177         }
 178         return -1;
 179 }
 180
 181 /* Set the mode for the windows column in the current tag */
 182 static void set_mode(win_t *win, mode_t mode)
 183 {
 184         col_t *col;
 185         if (tiling != search(wm_tag, win, NULL, &col, NULL, NULL))
 186                 return;
 187         printf("set_mode: %p, %d -> %d\n",
 188                         col, col->mode, mode);
 189         col->mode = mode;
 190         if (col->mode == split)
 191                 for (list_t *cur = col->rows; cur; cur = cur->next) {
 192                         row_t *row = cur->data;
 193                         row->height = wm_dpy->geom->h;
 194                 }
 195         wm_update();
 196 }
 197
 198 /* Focus the window in the current tag and record
 199  * it as the currently focused window */
 200 static void set_focus(win_t *win)
 201 {
 202         if (win == NULL || win == wm->root) {
 203                 sys_focus(wm->root);
 204                 return;
 205         }
 206
 207         /* - Only grab mouse button on unfocused window,
 208          *   this prevents stealing all mouse clicks from client windows,
 209          * - A better way may be to re-send mouse clicks to client windows
 210          *   using the return value from wm_handle_key */
 211         for (int i = key_mouse1; i < key_mouse7; i++) {
 212                 if (wm_focus)
 213                         sys_watch(wm_focus, i, MOD());
 214                 sys_unwatch(win, i, MOD());
 215         }
 216
 217         dpy_t *dpy; col_t *col; row_t *row; flt_t *flt;
 218         switch (search(wm_tag, win, &dpy, &col, &row, &flt)) {
 219         case tiling:
 220                 wm_dpy = dpy;
 221                 wm_col = col;
 222                 wm_row = row;
 223                 dpy->layer = tiling;
 224                 break;
 225         case floating:
 226                 wm_dpy = dpy;
 227                 wm_flt = flt;
 228                 dpy->layer = floating;
 229                 break;
 230         }
 231         sys_focus(win);
 232 }
 233
 234 /* Save mouse start location when moving/resizing windows */
 235 static void set_move(win_t *win, ptr_t ptr, drag_t drag)
 236 {
 237         printf("set_move: %d - %p@%d,%d\n",
 238                         drag, win, ptr.rx, ptr.ry);
 239         move_mode = drag;
 240         if (drag == move || drag == resize) {
 241                 move_layer = searchl(wm_tag, win, NULL,
 242                                 &move_lcol, &move_lrow, &move_lflt);
 243                 if (move_layer < 0)
 244                         return;
 245                 move_prev = ptr;
 246                 int midy = win->y + (win->h/2);
 247                 int midx = win->x + (win->w/2);
 248                 move_dir.v = ptr.ry < midy ? -1 : +1;
 249                 move_dir.h = ptr.rx < midx ? -1 : +1;
 250         }
 251 }
 252
 253 /* Print a text representation of the window layout
 254  * Quite useful for debugging */
 255 static void print_txt(void)
 256 {
 257         for (list_t *ltag = wm->tags; ltag; ltag = ltag->next) {
 258                 tag_t *tag = ltag->data;
 259                 printf("tag:       <%-9p [%p->%p] >%-9p d=%-9p - %d\n",
 260                                 ltag->prev, ltag, ltag->data, ltag->next,
 261                                 tag->dpy, tag->name);
 262         for (list_t *ldpy = tag->dpys; ldpy; ldpy = ldpy->next) {
 263                 dpy_t *dpy  = ldpy->data;
 264                 win_t *geom = dpy->geom;
 265                 printf("  dpy:     <%-9p [%p->%p] >%-9p %c=%-9p - %d,%d %dx%d\n",
 266                                 ldpy->prev, ldpy, ldpy->data, ldpy->next,
 267                                 dpy->layer == tiling   ? 'c' : 'f',
 268                                 dpy->layer == tiling   ? (void*)dpy->col : (void*)dpy->flt,
 269                                 geom->x, geom->y, geom->h, geom->w);
 270         for (list_t *lcol = dpy->cols; lcol; lcol = lcol->next) {
 271                 col_t *col = lcol->data;
 272                 printf("    col:   <%-9p [%p->%p] >%-9p r=%-9p - %dpx @ %d\n",
 273                                 lcol->prev, lcol, lcol->data, lcol->next,
 274                                 col->row, col->width, col->mode);
 275         for (list_t *lrow = col->rows; lrow; lrow = lrow->next) {
 276                 row_t *row = lrow->data;
 277                 win_t *win = row->win;
 278                 printf("      win: <%-9p [%p>>%p] >%-9p focus=%d%d    - %4dpx \n",
 279                                 lrow->prev, lrow, win, lrow->next,
 280                                 col->row == row, wm_focus == win, win->h);
 281         } }
 282         for (list_t *lflt = dpy->flts; lflt; lflt = lflt->next) {
 283                 flt_t *flt = lflt->data;
 284                 win_t *win = flt->win;
 285                 printf("    flt:   <%-9p [%p>>%p] >%-9p focus=%d%d    - %d,%d %dx%d \n",
 286                                 lflt->prev, lflt, win, lflt->next,
 287                                 dpy->flt == flt, wm_focus == flt->win,
 288                                 flt->x, flt->y, flt->h, flt->w);
 289         }  } }
 290 }
 291
 292 /* Cleanly remove a window from a tag
 293  *   Determines the new focused row/col
 294  *   Prunes empty lists */
 295 static layer_t cut_win(win_t *win, tag_t *tag)
 296 {
 297         list_t *ldpy, *lcol, *lrow, *lflt;
 298         layer_t layer = searchl(tag, win, &ldpy, &lcol, &lrow, &lflt);
 299
 300         if (layer == tiling) {
 301                 dpy_t *dpy = DPY(ldpy);
 302                 col_t *col = COL(lcol);
 303                 col->row  = lrow->prev ? lrow->prev->data :
 304                             lrow->next ? lrow->next->data : NULL;
 305                 col->rows = list_remove(col->rows, lrow, 1);
 306                 if (col->rows == NULL && (lcol->next || lcol->prev)) {
 307                         dpy->col  = lcol->prev ? lcol->prev->data :
 308                                     lcol->next ? lcol->next->data : NULL;
 309                         dpy->cols = list_remove(dpy->cols, lcol, 1);
 310                 }
 311         }
 312
 313         if (layer == floating) {
 314                 dpy_t *dpy = DPY(ldpy);
 315                 dpy->flts = list_remove(dpy->flts, lflt, 1);
 316                 dpy->flt  = dpy->flts ? list_last(dpy->flts)->data : NULL;
 317                 if (!dpy->flt && dpy->col && dpy->col->row)
 318                         dpy->layer = tiling;
 319         }
 320
 321         return layer;
 322 }
 323
 324 /* Insert a window into the tiling layer
 325  *   The window is added immediately after the
 326  *   columns currently focused row */
 327 static void put_win_col(win_t *win, tag_t *tag, dpy_t *dpy, col_t *col)
 328 {
 329         row_t *row = new0(row_t);
 330         row->win = win;
 331
 332         if (col == NULL) {
 333                 col = new0(col_t);
 334                 dpy->cols = list_insert(dpy->cols, col);
 335         }
 336
 337         int nrows = list_length(col->rows);
 338         if (col->row) {
 339                 list_t *prev = list_find(col->rows, col->row);
 340                 list_insert_after(prev, row);
 341         } else {
 342                 col->rows = list_insert(col->rows, row);
 343         }
 344         tag->dpy           = dpy;
 345         tag->dpy->col      = col;
 346         tag->dpy->col->row = row;
 347         tag->dpy->layer    = tiling;
 348
 349         row->height = dpy->geom->h / MAX(nrows,1);
 350         if (nrows == 0) {
 351                 int ncols = list_length(dpy->cols);
 352                 col->width = dpy->geom->w / MAX(ncols-1,1);
 353         }
 354 }
 355
 356 /* Insert a window into the floating layer */
 357 static void put_win_flt(win_t *win, tag_t *tag, dpy_t *dpy)
 358 {
 359         flt_t *flt = new0(flt_t);
 360         flt->win = win;
 361         flt->w   = dpy->geom->w / 2;
 362         flt->h   = dpy->geom->h / 2;
 363         flt->x   = dpy->geom->x + flt->w / 2;
 364         flt->y   = dpy->geom->y + flt->h / 2;
 365         if (dpy->flt) {
 366                 flt->x = dpy->flt->x + 20;
 367                 flt->y = dpy->flt->y + 20;
 368         }
 369         dpy->flts = list_append(dpy->flts, flt);
 370         tag->dpy        = dpy;
 371         tag->dpy->flt   = flt;
 372         tag->dpy->layer = floating;
 373 }
 374
 375 /* Insert a window into a tag */
 376 static void put_win(win_t *win, tag_t *tag, layer_t layer)
 377 {
 378         if (layer == tiling)
 379                 put_win_col(win, tag, tag->dpy, tag->dpy->col);
 380         if (layer == floating)
 381                 put_win_flt(win, tag, tag->dpy);
 382 }
 383
 384 /* Move a window up, down, left, or right
 385  *   This handles moving with a column, between
 386  *   columns, and between multiple monitors. */
 387 static void shift_window(win_t *win, int col, int row)
 388 {
 389         if (!win) return;
 390         printf("shift_window: %p - %+d,%+d\n", win, col, row);
 391         print_txt();
 392         printf("shift_window: >>>\n");
 393         list_t *ldpy, *lcol, *lrow, *lflt;
 394         if (tiling != searchl(wm_tag, win, &ldpy, &lcol, &lrow, &lflt))
 395                 return;
 396         dpy_t *dpy = ldpy->data;
 397         if (row != 0) {
 398                 /* Move with a column, just swap rows */
 399                 list_t *src = lrow, *dst = NULL;
 400                 if (row < 0) dst = src->prev;
 401                 if (row > 0) dst = src->next;
 402                 if (src && dst) {
 403                         printf("swap: %p <-> %p\n", src->data, dst->data);
 404                         row_t *tmp = src->data;
 405                         src->data = dst->data;
 406                         dst->data = tmp;
 407                         goto update;
 408                 }
 409         } else {
 410                 /* Moving between columns */
 411                 int onlyrow = !lrow->prev && !lrow->next;
 412                 list_t *src = lcol, *dst = NULL;
 413                 if (col < 0) {
 414                         if (src->prev) {
 415                                 /* Normal move between columns */
 416                                 dst = src->prev;
 417                         } else if (!onlyrow) {
 418                                 /* Create new column */
 419                                 dpy->cols = list_insert(dpy->cols, new0(col_t));
 420                                 dst = src->prev;
 421                         } else if (ldpy->prev) {
 422                                 /* Move to next monitor */
 423                                 dpy = ldpy->prev->data;
 424                                 dst = list_last(dpy->cols);
 425                         } else {
 426                                 /* We, shall, not, be,
 427                                  * we shall not be moved */
 428                                 return;
 429                         }
 430                 }
 431                 if (col > 0) {
 432                         if (src->next) {
 433                                 dst = src->next;
 434                         } else if (!onlyrow) {
 435                                 dpy->cols = list_append(dpy->cols, new0(col_t));
 436                                 dst = src->next;
 437                         } else if (ldpy->next) {
 438                                 dpy = ldpy->next->data;
 439                                 dst = dpy->cols;
 440                         } else {
 441                                 return;
 442                         }
 443                 }
 444                 cut_win(win, wm_tag);
 445                 put_win_col(win, wm_tag, dpy, dst ? dst->data : NULL);
 446                 goto update;
 447         }
 448 update:
 449         print_txt();
 450         wm_update();
 451 }
 452
 453 /* Get next/prev item, with wraparound */
 454 static list_t *get_next(list_t *list, int forward)
 455 {
 456         list_t *next = forward ? list->next : list->prev;
 457         if (next == NULL) {
 458                 next = list;
 459                 while ((list = forward ? next->prev : next->next))
 460                         next = list;
 461         }
 462         return next;
 463 }
 464
 465 /* Move keyboard focus in a given direction */
 466 static void shift_focus(int cols, int rows)
 467 {
 468         printf("shift_focus: %+d,%+d\n", cols, rows);
 469         if (rows != 0 && wm_focus) {
 470                 /* Move focus up/down */
 471                 list_t *dpy, *col, *row;
 472                 if (tiling != searchl(wm_tag, wm_focus, &dpy, &col, &row, NULL))
 473                         return;
 474                 row_t *next = get_next(row, rows > 0)->data;
 475                 set_focus(next->win);
 476                 if (COL(col)->mode != split)
 477                         wm_update();
 478         }
 479         if (cols != 0) {
 480                 /* Move focus left/right */
 481                 list_t *dpy, *col, *row, *ndpy, *ncol = NULL;
 482                 if (wm_focus) {
 483                         /* Currently focused on a window */
 484                         if (tiling != searchl(wm_tag, wm_focus, &dpy, &col, &row, NULL))
 485                                 return;
 486                         ncol = cols > 0 ? col->next : col->prev;
 487                 } else {
 488                         /* Currently focused on an empty display */
 489                         dpy = list_find(wm_tag->dpys, wm_dpy);
 490                 }
 491                 if (ncol == NULL) {
 492                         /* Moving focus to a different display */
 493                         ndpy = get_next(dpy, cols > 0);
 494                         ncol = cols > 0 ? DPY(ndpy)->cols :
 495                                 list_last(DPY(ndpy)->cols);
 496                         wm_dpy = ndpy->data;
 497                 }
 498                 if (ncol && COL(ncol) && COL(ncol)->row)
 499                         set_focus(COL(ncol)->row->win);
 500                 else
 501                         sys_focus(wm->root);
 502         }
 503 }
 504
 505 /* Raise the window in the floating */
 506 static void raise_float(win_t *win)
 507 {
 508         printf("raise_float: %p\n", win);
 509         list_t *cur;
 510         for (cur = wm_dpy->flts; cur; cur = cur->next)
 511                 if (FLT(cur)->win == win)
 512                         break;
 513         if (cur) {
 514                 flt_t *flt = cur->data;
 515                 wm_dpy->flts = list_remove(wm_dpy->flts, cur, 0);
 516                 wm_dpy->flts = list_append(wm_dpy->flts, flt);
 517                 sys_raise(win);
 518         }
 519 }
 520
 521 /* Toggle between floating and tiling layers */
 522 static void switch_layer(void)
 523 {
 524         printf("switch_float: %p %d\n",
 525                         wm_dpy, wm_dpy->layer);
 526         wm_dpy->layer = !wm_dpy->layer;
 527         wm_update();
 528 }
 529
 530 /* Move current window between floating and tiling layers */
 531 static void set_layer(win_t *win)
 532 {
 533         if (!win) return;
 534         printf("set_float: %p %p\n", wm_dpy, win);
 535         wm_dpy->layer = !cut_win(win, wm_tag);
 536         put_win(win, wm_tag, wm_dpy->layer);
 537         wm_update();
 538 }
 539
 540 /* Allocate a new tag */
 541 static tag_t *tag_new(list_t *screens, int name)
 542 {
 543         tag_t *tag = new0(tag_t);
 544         tag->name  = name;
 545         for (list_t *cur = screens; cur; cur = cur->next) {
 546                 dpy_t *dpy  = new0(dpy_t);
 547                 dpy->geom = cur->data;
 548                 tag->dpys = list_append(tag->dpys, dpy);
 549         }
 550         tag->dpy  = tag->dpys->data;
 551         return tag;
 552 }
 553
 554 /* Search for a tag
 555  *   If it does not exist it is based on the
 556  *   display geometry in wm->screens */
 557 static tag_t *tag_find(int name)
 558 {
 559         tag_t *tag = NULL;
 560         for (list_t *cur = wm->tags; cur; cur = cur->next)
 561                 if (name == TAG(cur)->name) {
 562                         tag = cur->data;
 563                         break;
 564                 }
 565         if (!tag) {
 566                 tag = tag_new(wm->screens, name);
 567                 wm->tags = list_append(wm->tags, tag);
 568         }
 569         return tag;
 570 }
 571
 572 /* Move the window from the current tag to the new tag
 573  *   Unlike wmii, only remove the current tag, not all tags */
 574 static void tag_set(win_t *win, int name)
 575 {
 576         printf("tag_set: %p %d\n", win, name);
 577         if (wm_tag->name == name)
 578                 return;
 579         tag_t *tag = tag_find(name);
 580         layer_t layer = cut_win(win, wm_tag);
 581         put_win(win, tag, layer);
 582         set_focus(wm_focus);
 583 }
 584
 585 /* Switch to a different tag */
 586 static void tag_switch(int name)
 587 {
 588         printf("tag_switch: %d\n", name);
 589         tag_t *old = wm_tag;
 590         if ((wm_col == NULL || wm_row == NULL) && wm_flt == NULL) {
 591                 while (old->dpys) {
 592                         dpy_t *dpy = old->dpys->data;
 593                         while (dpy->cols)
 594                                 dpy->cols = list_remove(dpy->cols, dpy->cols, 1);
 595                         old->dpys = list_remove(old->dpys, old->dpys, 1);
 596                 }
 597                 list_t *ltag = list_find(wm->tags, old);
 598                 wm->tags = list_remove(wm->tags, ltag, 1);
 599         }
 600         wm_tag = tag_find(name);
 601 }
 602
 603 /* Tile all windows in the given display
 604  *   This performs all the actual window tiling
 605  *   Currently supports  split, stack and maximized modes */
 606 static void wm_update_cols(dpy_t *dpy)
 607 {
 608         int  x=0,  y=0; // Current window top-left position
 609         int tx=0, ty=0; // Total size (sum of initial col widths and row heights w/o margin)
 610         int mx=0, my=0; // Maximum usable size (screen size minus margins)
 611         int       sy=0; // Stack size (height of focused stack window)
 612
 613         /* Scale horizontally */
 614         x  = dpy->geom->x;
 615         mx = dpy->geom->w - (list_length(dpy->cols)+1)*MARGIN;
 616         for (list_t *lcol = dpy->cols; lcol; lcol = lcol->next)
 617                 tx += COL(lcol)->width;
 618         for (list_t *lcol = dpy->cols; lcol; lcol = lcol->next)
 619                 COL(lcol)->width *= (float)mx / tx;
 620
 621         /* Scale each column vertically */
 622         win_t *focus = get_focus();
 623         for (list_t *lcol = dpy->cols; lcol; lcol = lcol->next) {
 624                 col_t *col = lcol->data;
 625                 int nrows = list_length(col->rows);
 626                 ty = 0;
 627                 for (list_t *lrow = col->rows; lrow; lrow = lrow->next)
 628                         ty += ROW(lrow)->height;
 629                 y  = dpy->geom->y;
 630                 my = dpy->geom->h - (MARGIN + (nrows-1)* MARGIN    + MARGIN);
 631                 sy = dpy->geom->h - (MARGIN + (nrows-1)*(MARGIN/2) + MARGIN)
 632                                   -           (nrows-1)* STACK;
 633                 for (list_t *lrow = col->rows; lrow; lrow = lrow->next) {
 634                         win_t *win = ROW(lrow)->win;
 635                         win->h = ROW(lrow)->height;
 636                         int height = 0;
 637                         switch (col->mode) {
 638                         case split:
 639                                 sys_move(win, x+MARGIN, y+MARGIN,
 640                                         col->width, win->h * ((float)my / ty));
 641                                 height = win->h;
 642                                 y += height + MARGIN;
 643                                 break;
 644                         case stack:
 645                                 if (lrow->next && ROW(lrow->next)->win == col->row->win) {
 646                                         /* Hack to prevent flashing */
 647                                         win_t *next = ROW(lrow->next)->win;
 648                                         sys_move(next, x+MARGIN, y+MARGIN+STACK+MARGIN/2,
 649                                                 col->width, sy);
 650                                 }
 651                                 height = win == col->row->win ? sy : STACK;
 652                                 sys_move(win, x+MARGIN, y+MARGIN,
 653                                         col->width, height);
 654                                 y += height + (MARGIN/2);
 655                                 break;
 656                         case max:
 657                         case tab:
 658                                 sys_move(win, x+MARGIN, 0+MARGIN,
 659                                         col->width, dpy->geom->h-2*MARGIN);
 660                                 break;
 661                         }
 662                         if (focus == win)
 663                                 sys_raise(win);
 664                         ROW(lrow)->height = win->h;
 665                 }
 666                 x += col->width + MARGIN;
 667         }
 668 }
 669
 670 /*******************************
 671  * Window management functions *
 672  *******************************/
 673 void wm_update(void)
 674 {
 675         /* Show/hide tags */
 676         tag_foreach_col(wm_tag, dpy, col, row, win)
 677                 sys_show(win, st_show);
 678         tag_foreach_flt(wm_tag, dpy, flt, win)
 679                 sys_show(win, st_show);
 680         for (list_t *tag = wm ->tags; tag; tag = tag->next)
 681                 if (tag->data != wm_tag) {
 682                         tag_foreach_col(TAG(tag), dpy, col, row, win)
 683                                         sys_show(win, st_hide);
 684                         tag_foreach_flt(TAG(tag), dpy, flt, win)
 685                                         sys_show(win, st_hide);
 686                 }
 687
 688         /* Refresh the display */
 689         for (list_t *ldpy = wm_tag->dpys; ldpy; ldpy = ldpy->next)
 690                 wm_update_cols(ldpy->data);
 691         tag_foreach_flt(wm_tag, ldpy, lflt, win) {
 692                 flt_t *flt = lflt->data;
 693                 sys_move(win, flt->x, flt->y, flt->w, flt->h);
 694                 sys_raise(flt->win);
 695         }
 696         if (wm_focus)
 697                 set_focus(wm_focus);
 698 }
 699
 700 int wm_handle_key(win_t *win, Key_t key, mod_t mod, ptr_t ptr)
 701 {
 702         if (!win || win == wm_dpy->geom) return 0;
 703         //printf("wm_handle_key: %p - %x %c%c%c%c%c\n", win, key,
 704         //      mod.up    ? '^' : 'v',
 705         //      mod.alt   ? 'a' : '-',
 706         //      mod.ctrl  ? 'c' : '-',
 707         //      mod.shift ? 's' : '-',
 708         //      mod.win   ? 'w' : '-');
 709
 710         /* Mouse movement */
 711         if (key == key_mouse1)
 712                 raise_float(win);
 713         if (key_mouse0 <= key && key <= key_mouse7) {
 714                 if (key == key_mouse1 && mod.MODKEY && !mod.up)
 715                         return set_move(win,ptr,move),   1;
 716                 if (key == key_mouse3 && mod.MODKEY && !mod.up)
 717                         return set_move(win,ptr,resize), 1;
 718                 if (move_mode != none && mod.up)
 719                         return set_move(win,ptr,none),   1;
 720                 if (key == key_mouse1 && !mod.up && win->h == STACK)
 721                         return set_focus(win), wm_update(), 0;
 722                 return 0;
 723         }
 724
 725         /* Only handle key-down */
 726         if (mod.up)
 727                 return 0;
 728
 729         /* Misc */
 730         if (mod.MODKEY) {
 731 #ifdef DEBUG
 732                 if (key == key_f1) return raise_float(win), 1;
 733                 if (key == key_f2) return set_focus(win), 1;
 734                 if (key == key_f3) return sys_show(win, st_show), 1;
 735                 if (key == key_f4) return sys_show(win, st_hide), 1;
 736 #endif
 737                 if (key == key_f5) return wm_update(),    1;
 738                 if (key == key_f6) return print_txt(),    1;
 739                 if (key == 'q')    return sys_exit(),     1;
 740         }
 741
 742         /* Floating layer */
 743         if (key == ' ') {
 744                 if (mod.MODKEY && mod.shift)
 745                         return set_layer(win), 1;
 746                 if (mod.MODKEY)
 747                         return switch_layer(), 1;
 748         }
 749
 750         /* Movement commands */
 751         if (mod.MODKEY && mod.shift) {
 752                 switch (key) {
 753                 case 'h': return shift_window(wm_focus,-1, 0), 1;
 754                 case 'j': return shift_window(wm_focus, 0,+1), 1;
 755                 case 'k': return shift_window(wm_focus, 0,-1), 1;
 756                 case 'l': return shift_window(wm_focus,+1, 0), 1;
 757                 default: break;
 758                 }
 759         }
 760         else if (mod.MODKEY) {
 761                 switch (key) {
 762                 case 'h': return shift_focus(-1, 0), 1;
 763                 case 'j': return shift_focus( 0,+1), 1;
 764                 case 'k': return shift_focus( 0,-1), 1;
 765                 case 'l': return shift_focus(+1, 0), 1;
 766                 default: break;
 767                 }
 768         }
 769
 770         /* Column mode commands */
 771         if (mod.MODKEY) {
 772                 switch (key) {
 773                 case 'd': return set_mode(win, split), 1;
 774                 case 's': return set_mode(win, stack), 1;
 775                 case 'm': return set_mode(win, max),   1;
 776                 case 't': return set_mode(win, tab),   1;
 777                 default: break;
 778                 }
 779         }
 780
 781         /* Tag switching */
 782         if (mod.MODKEY && '0' <= key && key <= '9') {
 783                 int name = key - '0';
 784                 if (mod.shift)
 785                         tag_set(win, name);
 786                 else
 787                         tag_switch(name);
 788                 wm_update();
 789         }
 790
 791         /* Focus change */
 792         if (key == key_enter && win->h != STACK)
 793                 return set_focus(win), 1;
 794
 795         if (key_mouse0 <= key && key <= key_mouse7)
 796                 return set_focus(win), 0;
 797
 798         /* Reset focus after after focus change,
 799          * not sure what is causing the focus change in the first place
 800          * but preventing that would be a better solution */
 801         if (key == key_focus)
 802                 sys_focus(wm_focus ?: wm->root);
 803
 804         return 0;
 805 }
 806
 807 int wm_handle_ptr(win_t *cwin, ptr_t ptr)
 808 {
 809         //printf("wm_handle_ptr: %p - %d,%d %d,%d (%d) -- \n",
 810         //              cwin, ptr.x, ptr.y, ptr.rx, ptr.ry, move_mode);
 811
 812         if (move_mode == none)
 813                 return 0;
 814
 815         int dx = ptr.rx - move_prev.rx;
 816         int dy = ptr.ry - move_prev.ry;
 817         move_prev = ptr;
 818
 819         if (move_layer == tiling && move_mode == resize) {
 820                 list_t *vert = move_dir.v < 0 ? move_lrow->prev : move_lrow->next;
 821                 list_t *horz = move_dir.h < 0 ? move_lcol->prev : move_lcol->next;
 822                 if (vert) {
 823                         ROW(move_lrow)->height += move_dir.v * dy;
 824                         ROW(vert)->height      -= move_dir.v * dy;
 825                 }
 826                 if (horz) {
 827                         COL(move_lcol)->width  += move_dir.h * dx;
 828                         COL(horz)->width       -= move_dir.h * dx;
 829                 }
 830                 wm_update();
 831         }
 832
 833         if (move_layer == floating) {
 834                 flt_t *flt = move_lflt->data;
 835                 win_t *win = flt->win;
 836                 if (move_mode == move)
 837                         sys_move(win, win->x+dx, win->y+dy, win->w, win->h);
 838                 else if (move_mode == resize)
 839                         sys_move(win,
 840                                 win->x + dx * (move_dir.h < 0),
 841                                 win->y + dy * (move_dir.v < 0),
 842                                 win->w + dx *  move_dir.h,
 843                                 win->h + dy *  move_dir.v);
 844                 flt->x = win->x; flt->y = win->y;
 845                 flt->w = win->w; flt->h = win->h;
 846         }
 847
 848         return 0;
 849 }
 850
 851 void wm_insert(win_t *win)
 852 {
 853         printf("wm_insert: %p\n", win);
 854         print_txt();
 855
 856         /* Initialize window */
 857         win->wm = new0(win_wm_t);
 858         sys_watch(win, key_enter,  MOD());
 859         sys_watch(win, key_focus,  MOD());
 860
 861         /* Add to screen */
 862         put_win(win, wm_tag, wm_dpy->layer);
 863
 864         /* Arrange */
 865         wm_update();
 866         set_focus(wm_focus);
 867         print_txt();
 868 }
 869
 870 void wm_remove(win_t *win)
 871 {
 872         printf("wm_remove: %p\n", win);
 873         print_txt();
 874         for (list_t *tag = wm->tags; tag; tag = tag->next)
 875                 cut_win(win, tag->data);
 876         free(win->wm);
 877         set_focus(wm_focus);
 878         wm_update();
 879         print_txt();
 880 }
 881
 882 void wm_init(win_t *root)
 883 {
 884         printf("wm_init: %p\n", root);
 885
 886         /* Load configuration */
 887         MARGIN = conf_get_int("main.margin", MARGIN);
 888         STACK  = conf_get_int("main.stack",  STACK);
 889
 890         /* Hack, fix screen order */
 891         list_t *screens = sys_info(root);
 892         list_t *left  = screens;
 893         list_t *right = screens->next;
 894         if (left && right && WIN(left)->x > WIN(right)->x) {
 895                 void *tmp   = left->data;
 896                 left->data  = right->data;
 897                 right->data = tmp;
 898         }
 899
 900         wm          = new0(wm_t);
 901         wm->root    = root;
 902         wm->screens = screens;
 903         wm->tag     = tag_new(wm->screens, 1);
 904         wm->tags    = list_insert(NULL, wm->tag);
 905
 906         Key_t keys_e[] = {key_enter, key_focus};
 907         Key_t keys_s[] = {'h', 'j', 'k', 'l', 'q', ' ',
 908                 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'};
 909         Key_t keys_m[] = {'h', 'j', 'k', 'l', 'd', 's', 'm', 't', ' ',
 910                 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
 911                 key_f1, key_f2, key_f3, key_f4, key_f5, key_f6,
 912                 key_mouse1, key_mouse3};
 913         for (int i = 0; i < countof(keys_e); i++)
 914                 sys_watch(root, keys_e[i],  MOD());
 915         for (int i = 0; i < countof(keys_m); i++)
 916                 sys_watch(root, keys_m[i], MOD(.MODKEY=1));
 917         for (int i = 0; i < countof(keys_s); i++)
 918                 sys_watch(root, keys_s[i], MOD(.MODKEY=1,.shift=1));
 919 }
 920
 921 void wm_free(win_t *root)
 922 {
 923         /* Re-show and free all windows */
 924         while ( wm->tags) { tag_t *tag =  wm->tags->data;
 925         while (tag->dpys) { dpy_t *dpy = tag->dpys->data;
 926         while (dpy->cols) { col_t *col = dpy->cols->data;
 927         while (col->rows) { row_t *row = col->rows->data;
 928                 sys_show(row->win, st_show);
 929                 free(row->win->wm);
 930         col->rows = list_remove(col->rows, col->rows, 1); }
 931         dpy->cols = list_remove(dpy->cols, dpy->cols, 1); }
 932         while (dpy->flts) { flt_t *flt = dpy->flts->data;
 933                 sys_show(flt->win, st_show);
 934                 free(flt->win->wm);
 935         dpy->flts = list_remove(dpy->flts, dpy->flts, 1); }
 936         tag->dpys = list_remove(tag->dpys, tag->dpys, 1); }
 937          wm->tags = list_remove( wm->tags,  wm->tags, 1); }
 938
 939         /* Free remaining data */
 940         free(wm);
 941 }