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, FULL, 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         state_t state;   // state of window
  51 } row_t;
  52
  53 typedef struct {
  54         list_t *rows;    // of row_t
  55         row_t  *row;     // focused row
  56         int     width;   // column width
  57         mode_t  mode;    // display mode
  58 } col_t;
  59
  60 typedef struct {
  61         win_t *win;      // the window
  62         int x, y, w, h;  // position of window (in this tag)
  63         state_t state;   // state of window
  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 int sort_win(void *a, void *b)
 130 {
 131         return ((win_t*)a)->x > ((win_t*)b)->x ?  1 :
 132                ((win_t*)a)->x < ((win_t*)b)->x ? -1 : 0;
 133 }
 134
 135 static win_t *get_focus(void)
 136 {
 137         if (!wm_tag || !wm_dpy)
 138                 return NULL;
 139         switch (wm_dpy->layer) {
 140         case TILING:
 141                 return wm_col && wm_row ? wm_row->win : NULL;
 142         case FLOATING:
 143                 return wm_flt ? wm_flt->win : NULL;
 144         }
 145         return NULL;
 146 }
 147
 148 /* Search for the target window in a given tag
 149  * win may exist in other tags as well */
 150 static int searchl(tag_t *tag, win_t *target,
 151                 list_t **_dpy, list_t **_col, list_t **_row, list_t **_flt)
 152 {
 153         tag_foreach_col(tag, dpy, col, row, win) {
 154                 if (win == target) {
 155                         if (_dpy) *_dpy = dpy;
 156                         if (_col) *_col = col;
 157                         if (_row) *_row = row;
 158                         return TILING;
 159                 }
 160         }
 161         tag_foreach_flt(tag, dpy, flt, win) {
 162                 if (win == target) {
 163                         if (_dpy) *_dpy = dpy;
 164                         if (_flt) *_flt = flt;
 165                         return FLOATING;
 166                 }
 167         }
 168         return -1;
 169 }
 170
 171 static int search(tag_t *tag, win_t *target,
 172                 dpy_t **_dpy, col_t **_col, row_t **_row, flt_t **_flt)
 173 {
 174         list_t *dpy, *col, *row, *flt;
 175         switch (searchl(tag, target, &dpy, &col, &row, &flt)) {
 176         case TILING:
 177                 if (_dpy) *_dpy = DPY(dpy);
 178                 if (_col) *_col = COL(col);
 179                 if (_row) *_row = ROW(row);
 180                 return TILING;
 181         case FLOATING:
 182                 if (_dpy) *_dpy = DPY(dpy);
 183                 if (_flt) *_flt = FLT(flt);
 184                 return FLOATING;
 185         }
 186         return -1;
 187 }
 188
 189 /* Set the mode for the windows column in the current tag */
 190 static void set_mode(win_t *win, mode_t mode)
 191 {
 192         col_t *col;
 193         if (TILING != search(wm_tag, win, NULL, &col, NULL, NULL))
 194                 return;
 195         printf("set_mode: %p, %d -> %d\n",
 196                         col, col->mode, mode);
 197         col->mode = mode;
 198         if (col->mode == SPLIT)
 199                 for (list_t *cur = col->rows; cur; cur = cur->next) {
 200                         row_t *row = cur->data;
 201                         row->height = wm_dpy->geom->h;
 202                 }
 203         wm_update();
 204 }
 205
 206 /* Focus the window in the current tag and record
 207  * it as the currently focused window */
 208 static void set_focus(win_t *win)
 209 {
 210         if (win == NULL || win == wm->root) {
 211                 sys_focus(wm->root);
 212                 return;
 213         }
 214
 215         /* - Only grab mouse button on unfocused window,
 216          *   this prevents stealing all mouse clicks from client windows,
 217          * - A better way may be to re-send mouse clicks to client windows
 218          *   using the return value from wm_handle_key */
 219         for (int i = EV_MOUSE1; i < EV_MOUSE7; i++) {
 220                 if (wm_focus)
 221                         sys_watch(wm_focus, i, MOD());
 222                 sys_unwatch(win, i, MOD());
 223         }
 224
 225         dpy_t *dpy; col_t *col; row_t *row; flt_t *flt;
 226         switch (search(wm_tag, win, &dpy, &col, &row, &flt)) {
 227         case TILING:
 228                 wm_dpy = dpy;
 229                 wm_col = col;
 230                 wm_row = row;
 231                 dpy->layer = TILING;
 232                 break;
 233         case FLOATING:
 234                 wm_dpy = dpy;
 235                 wm_flt = flt;
 236                 dpy->layer = FLOATING;
 237                 break;
 238         }
 239         sys_focus(win);
 240 }
 241
 242 /* Save mouse start location when moving/resizing windows */
 243 static void set_move(win_t *win, ptr_t ptr, drag_t drag)
 244 {
 245         printf("set_move: %d - %p@%d,%d\n",
 246                         drag, win, ptr.rx, ptr.ry);
 247         move_mode = drag;
 248         if (drag == MOVE || drag == RESIZE) {
 249                 move_layer = searchl(wm_tag, win, NULL,
 250                                 &move_lcol, &move_lrow, &move_lflt);
 251                 if (move_layer < 0)
 252                         return;
 253                 move_prev = ptr;
 254                 int midy = win->y + (win->h/2);
 255                 int midx = win->x + (win->w/2);
 256                 move_dir.v = ptr.ry < midy ? -1 : +1;
 257                 move_dir.h = ptr.rx < midx ? -1 : +1;
 258         }
 259 }
 260
 261 /* Print a text representation of the window layout
 262  * Quite useful for debugging */
 263 static void print_txt(void)
 264 {
 265         for (list_t *ltag = wm->tags; ltag; ltag = ltag->next) {
 266                 tag_t *tag = ltag->data;
 267                 printf("tag:       <%-9p [%p->%p] >%-9p d=%-9p - %d\n",
 268                                 ltag->prev, ltag, ltag->data, ltag->next,
 269                                 tag->dpy, tag->name);
 270         for (list_t *ldpy = tag->dpys; ldpy; ldpy = ldpy->next) {
 271                 dpy_t *dpy  = ldpy->data;
 272                 win_t *geom = dpy->geom;
 273                 printf("  dpy:     <%-9p [%p->%p] >%-9p %c=%-9p - %d,%d %dx%d\n",
 274                                 ldpy->prev, ldpy, ldpy->data, ldpy->next,
 275                                 dpy->layer == TILING ? 'c' : 'f',
 276                                 dpy->layer == TILING ? (void*)dpy->col : (void*)dpy->flt,
 277                                 geom->x, geom->y, geom->h, geom->w);
 278         for (list_t *lcol = dpy->cols; lcol; lcol = lcol->next) {
 279                 col_t *col = lcol->data;
 280                 printf("    col:   <%-9p [%p->%p] >%-9p r=%-9p - %dpx @ %d\n",
 281                                 lcol->prev, lcol, lcol->data, lcol->next,
 282                                 col->row, col->width, col->mode);
 283         for (list_t *lrow = col->rows; lrow; lrow = lrow->next) {
 284                 row_t *row = lrow->data;
 285                 win_t *win = row->win;
 286                 printf("      win: <%-9p [%p>>%p] >%-9p focus=%d%d    - %4dpx \n",
 287                                 lrow->prev, lrow, win, lrow->next,
 288                                 col->row == row, wm_focus == win, win->h);
 289         } }
 290         for (list_t *lflt = dpy->flts; lflt; lflt = lflt->next) {
 291                 flt_t *flt = lflt->data;
 292                 win_t *win = flt->win;
 293                 printf("    flt:   <%-9p [%p>>%p] >%-9p focus=%d%d    - %d,%d %dx%d \n",
 294                                 lflt->prev, lflt, win, lflt->next,
 295                                 dpy->flt == flt, wm_focus == flt->win,
 296                                 flt->x, flt->y, flt->h, flt->w);
 297         }  } }
 298 }
 299
 300 /* Cleanly remove a window from a tag
 301  *   Determines the new focused row/col
 302  *   Prunes empty lists */
 303 static layer_t cut_win(win_t *win, tag_t *tag)
 304 {
 305         list_t *ldpy, *lcol, *lrow, *lflt;
 306         layer_t layer = searchl(tag, win, &ldpy, &lcol, &lrow, &lflt);
 307
 308         if (layer == TILING) {
 309                 dpy_t *dpy = DPY(ldpy);
 310                 col_t *col = COL(lcol);
 311                 col->row  = lrow->prev ? lrow->prev->data :
 312                             lrow->next ? lrow->next->data : NULL;
 313                 col->rows = list_remove(col->rows, lrow, 1);
 314                 if (col->rows == NULL && (lcol->next || lcol->prev)) {
 315                         dpy->col  = lcol->prev ? lcol->prev->data :
 316                                     lcol->next ? lcol->next->data : NULL;
 317                         dpy->cols = list_remove(dpy->cols, lcol, 1);
 318                 }
 319         }
 320
 321         if (layer == FLOATING) {
 322                 dpy_t *dpy = DPY(ldpy);
 323                 dpy->flts = list_remove(dpy->flts, lflt, 1);
 324                 dpy->flt  = dpy->flts ? list_last(dpy->flts)->data : NULL;
 325                 if (!dpy->flt && dpy->col && dpy->col->row)
 326                         dpy->layer = TILING;
 327         }
 328
 329         return layer;
 330 }
 331
 332 /* Insert a window into the tiling layer
 333  *   The window is added immediately after the
 334  *   columns currently focused row */
 335 static void put_win_col(win_t *win, tag_t *tag, dpy_t *dpy, col_t *col)
 336 {
 337         row_t *row = new0(row_t);
 338         row->win = win;
 339
 340         if (col == NULL) {
 341                 col = new0(col_t);
 342                 dpy->cols = list_insert(dpy->cols, col);
 343         }
 344
 345         int nrows = list_length(col->rows);
 346         if (col->row) {
 347                 list_t *prev = list_find(col->rows, col->row);
 348                 list_insert_after(prev, row);
 349         } else {
 350                 col->rows = list_insert(col->rows, row);
 351         }
 352         tag->dpy           = dpy;
 353         tag->dpy->col      = col;
 354         tag->dpy->col->row = row;
 355         tag->dpy->layer    = TILING;
 356
 357         row->height = dpy->geom->h / MAX(nrows,1);
 358         if (nrows == 0) {
 359                 int ncols = list_length(dpy->cols);
 360                 col->width = dpy->geom->w / MAX(ncols-1,1);
 361         }
 362 }
 363
 364 /* Insert a window into the floating layer */
 365 static void put_win_flt(win_t *win, tag_t *tag, dpy_t *dpy)
 366 {
 367         flt_t *flt = new0(flt_t);
 368         flt->win = win;
 369         flt->w   = dpy->geom->w / 2;
 370         flt->h   = dpy->geom->h / 2;
 371         flt->x   = dpy->geom->x + flt->w / 2;
 372         flt->y   = dpy->geom->y + flt->h / 2;
 373         if (dpy->flt) {
 374                 flt->x = dpy->flt->x + 20;
 375                 flt->y = dpy->flt->y + 20;
 376         }
 377         dpy->flts = list_append(dpy->flts, flt);
 378         tag->dpy        = dpy;
 379         tag->dpy->flt   = flt;
 380         tag->dpy->layer = FLOATING;
 381 }
 382
 383 /* Insert a window into a tag */
 384 static void put_win(win_t *win, tag_t *tag, layer_t layer)
 385 {
 386         if (layer == TILING)
 387                 put_win_col(win, tag, tag->dpy, tag->dpy->col);
 388         if (layer == FLOATING)
 389                 put_win_flt(win, tag, tag->dpy);
 390 }
 391
 392 /* Move a window up, down, left, or right
 393  *   This handles moving with a column, between
 394  *   columns, and between multiple monitors. */
 395 static void shift_window(win_t *win, int col, int row)
 396 {
 397         if (!win) return;
 398         printf("shift_window: %p - %+d,%+d\n", win, col, row);
 399         print_txt();
 400         printf("shift_window: >>>\n");
 401         list_t *ldpy, *lcol, *lrow, *lflt;
 402         if (TILING != searchl(wm_tag, win, &ldpy, &lcol, &lrow, &lflt))
 403                 return;
 404         dpy_t *dpy = ldpy->data;
 405         if (row != 0) {
 406                 /* Move with a column, just swap rows */
 407                 list_t *src = lrow, *dst = NULL;
 408                 if (row < 0) dst = src->prev;
 409                 if (row > 0) dst = src->next;
 410                 if (src && dst) {
 411                         printf("swap: %p <-> %p\n", src->data, dst->data);
 412                         row_t *tmp = src->data;
 413                         src->data = dst->data;
 414                         dst->data = tmp;
 415                         goto update;
 416                 }
 417         } else {
 418                 /* Moving between columns */
 419                 int onlyrow = !lrow->prev && !lrow->next;
 420                 list_t *src = lcol, *dst = NULL;
 421                 if (col < 0) {
 422                         if (src->prev) {
 423                                 /* Normal move between columns */
 424                                 dst = src->prev;
 425                         } else if (!onlyrow) {
 426                                 /* Create new column */
 427                                 dpy->cols = list_insert(dpy->cols, new0(col_t));
 428                                 dst = src->prev;
 429                         } else if (ldpy->prev) {
 430                                 /* Move to next monitor */
 431                                 dpy = ldpy->prev->data;
 432                                 dst = list_last(dpy->cols);
 433                         } else {
 434                                 /* We, shall, not, be,
 435                                  * we shall not be moved */
 436                                 return;
 437                         }
 438                 }
 439                 if (col > 0) {
 440                         if (src->next) {
 441                                 dst = src->next;
 442                         } else if (!onlyrow) {
 443                                 dpy->cols = list_append(dpy->cols, new0(col_t));
 444                                 dst = src->next;
 445                         } else if (ldpy->next) {
 446                                 dpy = ldpy->next->data;
 447                                 dst = dpy->cols;
 448                         } else {
 449                                 return;
 450                         }
 451                 }
 452                 cut_win(win, wm_tag);
 453                 put_win_col(win, wm_tag, dpy, dst ? dst->data : NULL);
 454                 goto update;
 455         }
 456 update:
 457         print_txt();
 458         wm_update();
 459 }
 460
 461 /* Get next/prev item, with wraparound */
 462 static list_t *get_next(list_t *list, int forward)
 463 {
 464         list_t *next = forward ? list->next : list->prev;
 465         if (next == NULL) {
 466                 next = list;
 467                 while ((list = forward ? next->prev : next->next))
 468                         next = list;
 469         }
 470         return next;
 471 }
 472
 473 /* Move keyboard focus in a given direction */
 474 static void shift_focus(int cols, int rows)
 475 {
 476         printf("shift_focus: %+d,%+d\n", cols, rows);
 477         if (rows != 0 && wm_focus) {
 478                 /* Move focus up/down */
 479                 list_t *dpy, *col, *row;
 480                 if (TILING != searchl(wm_tag, wm_focus, &dpy, &col, &row, NULL))
 481                         return;
 482                 row_t *next = get_next(row, rows > 0)->data;
 483                 set_focus(next->win);
 484                 if (COL(col)->mode != SPLIT)
 485                         wm_update();
 486         }
 487         if (cols != 0) {
 488                 /* Move focus left/right */
 489                 list_t *dpy, *col, *row, *ndpy, *ncol = NULL;
 490                 if (wm_focus) {
 491                         /* Currently focused on a window */
 492                         if (TILING != searchl(wm_tag, wm_focus, &dpy, &col, &row, NULL))
 493                                 return;
 494                         ncol = cols > 0 ? col->next : col->prev;
 495                 } else {
 496                         /* Currently focused on an empty display */
 497                         dpy = list_find(wm_tag->dpys, wm_dpy);
 498                 }
 499                 if (ncol == NULL) {
 500                         /* Moving focus to a different display */
 501                         ndpy = get_next(dpy, cols > 0);
 502                         ncol = cols > 0 ? DPY(ndpy)->cols :
 503                                 list_last(DPY(ndpy)->cols);
 504                         wm_dpy = ndpy->data;
 505                 }
 506                 if (ncol && COL(ncol) && COL(ncol)->row)
 507                         set_focus(COL(ncol)->row->win);
 508                 else
 509                         sys_focus(wm->root);
 510         }
 511 }
 512
 513 /* Raise the window in the floating */
 514 static void raise_float(win_t *win)
 515 {
 516         printf("raise_float: %p\n", win);
 517         list_t *cur;
 518         for (cur = wm_dpy->flts; cur; cur = cur->next)
 519                 if (FLT(cur)->win == win)
 520                         break;
 521         if (cur) {
 522                 flt_t *flt = cur->data;
 523                 wm_dpy->flts = list_remove(wm_dpy->flts, cur, 0);
 524                 wm_dpy->flts = list_append(wm_dpy->flts, flt);
 525                 sys_raise(win);
 526         }
 527 }
 528
 529 /* Toggle between floating and tiling layers */
 530 static void switch_layer(void)
 531 {
 532         printf("switch_float: %p %d\n",
 533                         wm_dpy, wm_dpy->layer);
 534         wm_dpy->layer = !wm_dpy->layer;
 535         wm_update();
 536 }
 537
 538 /* Move current window between floating and tiling layers */
 539 static void set_layer(win_t *win)
 540 {
 541         if (!win) return;
 542         printf("set_float: %p %p\n", wm_dpy, win);
 543         wm_dpy->layer = !cut_win(win, wm_tag);
 544         put_win(win, wm_tag, wm_dpy->layer);
 545         wm_update();
 546 }
 547
 548 /* Allocate a new tag */
 549 static tag_t *tag_new(list_t *screens, int name)
 550 {
 551         tag_t *tag = new0(tag_t);
 552         tag->name  = name;
 553         for (list_t *cur = screens; cur; cur = cur->next) {
 554                 dpy_t *dpy  = new0(dpy_t);
 555                 dpy->geom = cur->data;
 556                 tag->dpys = list_append(tag->dpys, dpy);
 557         }
 558         tag->dpy  = tag->dpys->data;
 559         for (list_t *dpy = tag->dpys; dpy; dpy = dpy->next)
 560                 if (DPY(dpy)->geom->z > tag->dpy->geom->z)
 561                         tag->dpy = dpy->data;
 562         return tag;
 563 }
 564
 565 /* Search for a tag
 566  *   If it does not exist it is based on the
 567  *   display geometry in wm->screens */
 568 static tag_t *tag_find(int name)
 569 {
 570         tag_t *tag = NULL;
 571         for (list_t *cur = wm->tags; cur; cur = cur->next)
 572                 if (name == TAG(cur)->name) {
 573                         tag = cur->data;
 574                         break;
 575                 }
 576         if (!tag) {
 577                 tag = tag_new(wm->screens, name);
 578                 wm->tags = list_append(wm->tags, tag);
 579         }
 580         return tag;
 581 }
 582
 583 /* Move the window from the current tag to the new tag
 584  *   Unlike wmii, only remove the current tag, not all tags */
 585 static void tag_set(win_t *win, int name)
 586 {
 587         printf("tag_set: %p %d\n", win, name);
 588         if (wm_tag->name == name)
 589                 return;
 590         tag_t *tag = tag_find(name);
 591         layer_t layer = cut_win(win, wm_tag);
 592         put_win(win, tag, layer);
 593         set_focus(wm_focus);
 594 }
 595
 596 /* Switch to a different tag */
 597 static void tag_switch(int name)
 598 {
 599         printf("tag_switch: %d\n", name);
 600         tag_t *old = wm_tag;
 601         if ((wm_col == NULL || wm_row == NULL) && wm_flt == NULL) {
 602                 while (old->dpys) {
 603                         dpy_t *dpy = old->dpys->data;
 604                         while (dpy->cols)
 605                                 dpy->cols = list_remove(dpy->cols, dpy->cols, 1);
 606                         old->dpys = list_remove(old->dpys, old->dpys, 1);
 607                 }
 608                 list_t *ltag = list_find(wm->tags, old);
 609                 wm->tags = list_remove(wm->tags, ltag, 1);
 610         }
 611         wm_tag = tag_find(name);
 612 }
 613
 614 /* Tile all windows in the given display
 615  *   This performs all the actual window tiling
 616  *   Currently supports  split, stack and maximized modes */
 617 static void wm_update_cols(dpy_t *dpy)
 618 {
 619         int  x=0,  y=0; // Current window top-left position
 620         int tx=0, ty=0; // Total size (sum of initial col widths and row heights w/o margin)
 621         int mx=0, my=0; // Maximum usable size (screen size minus margins)
 622         int       sy=0; // Stack size (height of focused stack window)
 623
 624         /* Scale horizontally */
 625         x  = dpy->geom->x;
 626         mx = dpy->geom->w - (list_length(dpy->cols)+1)*margin;
 627         for (list_t *lcol = dpy->cols; lcol; lcol = lcol->next)
 628                 tx += COL(lcol)->width;
 629         for (list_t *lcol = dpy->cols; lcol; lcol = lcol->next)
 630                 COL(lcol)->width *= (float)mx / tx;
 631
 632         /* Scale each column vertically */
 633         win_t *focus = get_focus();
 634         for (list_t *lcol = dpy->cols; lcol; lcol = lcol->next) {
 635                 col_t *col = lcol->data;
 636                 int nrows = list_length(col->rows);
 637                 ty = 0;
 638                 for (list_t *lrow = col->rows; lrow; lrow = lrow->next)
 639                         ty += ROW(lrow)->height;
 640                 y  = dpy->geom->y;
 641                 my = dpy->geom->h - (margin + (nrows-1)* margin    + margin);
 642                 sy = dpy->geom->h - (margin + (nrows-1)*(margin/2) + margin)
 643                                   -           (nrows-1)* stack;
 644                 for (list_t *lrow = col->rows; lrow; lrow = lrow->next) {
 645                         win_t *win = ROW(lrow)->win;
 646                         win->h = ROW(lrow)->height;
 647                         state_t state = ST_SHOW;
 648                         int height = 0;
 649                         switch (col->mode) {
 650                         case SPLIT:
 651                                 sys_move(win, x+margin, y+margin,
 652                                         col->width, win->h * ((float)my / ty));
 653                                 height = win->h;
 654                                 y += height + margin;
 655                                 break;
 656                         case STACK:
 657                                 if (lrow->next && ROW(lrow->next)->win == col->row->win) {
 658                                         /* Hack to prevent flashing */
 659                                         win_t *next = ROW(lrow->next)->win;
 660                                         sys_move(next, x+margin, y+margin+stack+margin/2,
 661                                                 col->width, sy);
 662                                         sys_show(next, ST_SHOW);
 663                                 }
 664                                 int isfocus = win == col->row->win;
 665                                 state  = isfocus ? ST_SHOW : ST_SHADE;
 666                                 sys_show(win, state);
 667                                 sys_move(win, x+margin, y+margin, col->width, sy);
 668                                 y += (isfocus ? sy : stack) + (margin/2);
 669                                 break;
 670                         case FULL:
 671                         case TAB:
 672                                 sys_move(win, x+margin, 0+margin,
 673                                         col->width, dpy->geom->h-2*margin);
 674                                 break;
 675                         }
 676                         ROW(lrow)->state = state;
 677                         sys_show(win, state);
 678                         if (focus == win)
 679                                 sys_raise(win);
 680                         ROW(lrow)->height = win->h;
 681                 }
 682                 x += col->width + margin;
 683         }
 684 }
 685
 686 /*******************************
 687  * Window management functions *
 688  *******************************/
 689 void wm_update(void)
 690 {
 691         /* Show/hide tags */
 692         tag_foreach_col(wm_tag, dpy, col, row, win)
 693                 sys_show(win, ROW(row)->state);
 694         tag_foreach_flt(wm_tag, dpy, flt, win)
 695                 sys_show(win, FLT(flt)->state);
 696         for (list_t *tag = wm ->tags; tag; tag = tag->next)
 697                 if (tag->data != wm_tag) {
 698                         tag_foreach_col(TAG(tag), dpy, col, row, win)
 699                                         sys_show(win, ST_HIDE);
 700                         tag_foreach_flt(TAG(tag), dpy, flt, win)
 701                                         sys_show(win, ST_HIDE);
 702                 }
 703
 704         /* Refresh the display */
 705         for (list_t *ldpy = wm_tag->dpys; ldpy; ldpy = ldpy->next)
 706                 wm_update_cols(ldpy->data);
 707         tag_foreach_flt(wm_tag, ldpy, lflt, win) {
 708                 flt_t *flt = lflt->data;
 709                 sys_move(win, flt->x, flt->y, flt->w, flt->h);
 710                 sys_raise(flt->win);
 711         }
 712         if (wm_focus)
 713                 set_focus(wm_focus);
 714 }
 715
 716 int wm_handle_event(win_t *win, event_t ev, mod_t mod, ptr_t ptr)
 717 {
 718         if (!win || win == wm_dpy->geom) return 0;
 719         //printf("wm_handle_event: %p - %x %c%c%c%c%c\n", win, ev,
 720         //      mod.up    ? '^' : 'v',
 721         //      mod.alt   ? 'a' : '-',
 722         //      mod.ctrl  ? 'c' : '-',
 723         //      mod.shift ? 's' : '-',
 724         //      mod.win   ? 'w' : '-');
 725
 726         /* Mouse movement */
 727         if (ev == EV_MOUSE1)
 728                 raise_float(win);
 729         if (EV_MOUSE0 <= ev && ev <= EV_MOUSE7) {
 730                 if (ev == EV_MOUSE1 && mod.MODKEY && !mod.up)
 731                         return set_move(win,ptr,MOVE),   1;
 732                 if (ev == EV_MOUSE3 && mod.MODKEY && !mod.up)
 733                         return set_move(win,ptr,RESIZE), 1;
 734                 if (move_mode != NONE && mod.up)
 735                         return set_move(win,ptr,NONE),   1;
 736                 if (ev == EV_MOUSE1 && !mod.up && win->state == ST_SHADE)
 737                         return set_focus(win), wm_update(), 0;
 738                 return 0;
 739         }
 740
 741         /* Only handle key-down */
 742         if (mod.up)
 743                 return 0;
 744
 745         /* Misc */
 746         if (mod.MODKEY) {
 747 #ifdef DEBUG
 748                 if (ev == EV_F1) return raise_float(win), 1;
 749                 if (ev == EV_F2) return set_focus(win), 1;
 750                 if (ev == EV_F3) return sys_show(win, ST_SHOW),  1;
 751                 if (ev == EV_F4) return sys_show(win, ST_HIDE),  1;
 752                 if (ev == EV_F7) return sys_show(win, ST_SHADE), 1;
 753 #endif
 754                 if (ev == EV_F5) return wm_update(),    1;
 755                 if (ev == EV_F6) return print_txt(),    1;
 756                 if (ev == 'q')   return sys_exit(),     1;
 757         }
 758         if (mod.MODKEY && mod.shift) {
 759                 if (ev == 'c')   return sys_show(win, ST_CLOSE), 1;
 760         }
 761
 762         /* Floating layer */
 763         if (ev == ' ') {
 764                 if (mod.MODKEY && mod.shift)
 765                         return set_layer(win), 1;
 766                 if (mod.MODKEY)
 767                         return switch_layer(), 1;
 768         }
 769
 770         /* Movement commands */
 771         if (mod.MODKEY && mod.shift) {
 772                 switch (ev) {
 773                 case 'h': return shift_window(wm_focus,-1, 0), 1;
 774                 case 'j': return shift_window(wm_focus, 0,+1), 1;
 775                 case 'k': return shift_window(wm_focus, 0,-1), 1;
 776                 case 'l': return shift_window(wm_focus,+1, 0), 1;
 777                 default: break;
 778                 }
 779         }
 780         else if (mod.MODKEY) {
 781                 switch (ev) {
 782                 case 'h': return shift_focus(-1, 0), 1;
 783                 case 'j': return shift_focus( 0,+1), 1;
 784                 case 'k': return shift_focus( 0,-1), 1;
 785                 case 'l': return shift_focus(+1, 0), 1;
 786                 default: break;
 787                 }
 788         }
 789
 790         /* Column mode commands */
 791         if (mod.MODKEY) {
 792                 switch (ev) {
 793                 case 'd': return set_mode(win, SPLIT), 1;
 794                 case 's': return set_mode(win, STACK), 1;
 795                 case 'm': return set_mode(win, FULL),  1;
 796                 case 't': return set_mode(win, TAB),   1;
 797                 default: break;
 798                 }
 799         }
 800
 801         /* Tag switching */
 802         if (mod.MODKEY && '0' <= ev && ev <= '9') {
 803                 int name = ev - '0';
 804                 if (mod.shift)
 805                         tag_set(win, name);
 806                 else
 807                         tag_switch(name);
 808                 wm_update();
 809         }
 810
 811         /* Focus change */
 812         if (ev == EV_ENTER && win->state != ST_SHADE)
 813                 return set_focus(win), 1;
 814
 815         if (EV_MOUSE0 <= ev && ev <= EV_MOUSE7)
 816                 return set_focus(win), 0;
 817
 818         /* Reset focus after after focus change,
 819          * not sure what is causing the focus change in the first place
 820          * but preventing that would be a better solution */
 821         if (ev == EV_FOCUS)
 822                 sys_focus(wm_focus ?: wm->root);
 823
 824         return 0;
 825 }
 826
 827 int wm_handle_ptr(win_t *cwin, ptr_t ptr)
 828 {
 829         //printf("wm_handle_ptr: %p - %d,%d %d,%d (%d) -- \n",
 830         //              cwin, ptr.x, ptr.y, ptr.rx, ptr.ry, move_mode);
 831
 832         if (move_mode == NONE)
 833                 return 0;
 834
 835         int dx = ptr.rx - move_prev.rx;
 836         int dy = ptr.ry - move_prev.ry;
 837         move_prev = ptr;
 838
 839         if (move_layer == TILING && move_mode == RESIZE) {
 840                 list_t *vert = move_dir.v < 0 ? move_lrow->prev : move_lrow->next;
 841                 list_t *horz = move_dir.h < 0 ? move_lcol->prev : move_lcol->next;
 842                 if (vert) {
 843                         ROW(move_lrow)->height += move_dir.v * dy;
 844                         ROW(vert)->height      -= move_dir.v * dy;
 845                 }
 846                 if (horz) {
 847                         COL(move_lcol)->width  += move_dir.h * dx;
 848                         COL(horz)->width       -= move_dir.h * dx;
 849                 }
 850                 wm_update();
 851         }
 852
 853         if (move_layer == FLOATING) {
 854                 flt_t *flt = move_lflt->data;
 855                 win_t *win = flt->win;
 856                 if (move_mode == MOVE)
 857                         sys_move(win, win->x+dx, win->y+dy, win->w, win->h);
 858                 else if (move_mode == RESIZE)
 859                         sys_move(win,
 860                                 win->x + dx * (move_dir.h < 0),
 861                                 win->y + dy * (move_dir.v < 0),
 862                                 win->w + dx *  move_dir.h,
 863                                 win->h + dy *  move_dir.v);
 864                 flt->x = win->x; flt->y = win->y;
 865                 flt->w = win->w; flt->h = win->h;
 866         }
 867
 868         return 0;
 869 }
 870
 871 void wm_insert(win_t *win)
 872 {
 873         printf("wm_insert: %p\n", win);
 874         print_txt();
 875
 876         /* Initialize window */
 877         win->wm = new0(win_wm_t);
 878         sys_watch(win, EV_ENTER, MOD());
 879         sys_watch(win, EV_FOCUS, MOD());
 880
 881         /* Add to screen */
 882         put_win(win, wm_tag, wm_dpy->layer);
 883
 884         /* Arrange */
 885         wm_update();
 886         set_focus(wm_focus);
 887         print_txt();
 888 }
 889
 890 void wm_remove(win_t *win)
 891 {
 892         printf("wm_remove: %p\n", win);
 893         print_txt();
 894         for (list_t *tag = wm->tags; tag; tag = tag->next)
 895                 cut_win(win, tag->data);
 896         free(win->wm);
 897         set_focus(wm_focus);
 898         wm_update();
 899         print_txt();
 900 }
 901
 902 void wm_init(win_t *root)
 903 {
 904         printf("wm_init: %p\n", root);
 905
 906         /* Load configuration */
 907         margin = conf_get_int("main.margin", margin);
 908         stack  = conf_get_int("main.stack",  stack);
 909
 910         wm          = new0(wm_t);
 911         wm->root    = root;
 912         wm->screens = list_sort(sys_info(root), 0, sort_win);
 913         wm->tag     = tag_new(wm->screens, 1);
 914         wm->tags    = list_insert(NULL, wm->tag);
 915
 916         event_t ev_e[] = {EV_ENTER, EV_FOCUS};
 917         event_t ev_s[] = {'h', 'j', 'k', 'l', 'c', 'q', ' ',
 918                 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'};
 919         event_t ev_m[] = {'h', 'j', 'k', 'l', 'd', 's', 'm', 't', ' ',
 920                 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
 921                 EV_F1, EV_F2, EV_F3, EV_F4,  EV_F5,  EV_F6,
 922                 EV_F7, EV_F8, EV_F9, EV_F10, EV_F11, EV_F12,
 923                 EV_MOUSE1, EV_MOUSE3};
 924         for (int i = 0; i < countof(ev_e); i++)
 925                 sys_watch(root, ev_e[i],  MOD());
 926         for (int i = 0; i < countof(ev_m); i++)
 927                 sys_watch(root, ev_m[i], MOD(.MODKEY=1));
 928         for (int i = 0; i < countof(ev_s); i++)
 929                 sys_watch(root, ev_s[i], MOD(.MODKEY=1,.shift=1));
 930 }
 931
 932 void wm_free(win_t *root)
 933 {
 934         /* Re-show and free all windows */
 935         while ( wm->tags) { tag_t *tag =  wm->tags->data;
 936         while (tag->dpys) { dpy_t *dpy = tag->dpys->data;
 937         while (dpy->cols) { col_t *col = dpy->cols->data;
 938         while (col->rows) { row_t *row = col->rows->data;
 939                 sys_show(row->win, ST_SHOW);
 940                 free(row->win->wm);
 941         col->rows = list_remove(col->rows, col->rows, 1); }
 942         dpy->cols = list_remove(dpy->cols, dpy->cols, 1); }
 943         while (dpy->flts) { flt_t *flt = dpy->flts->data;
 944                 sys_show(flt->win, ST_SHOW);
 945                 free(flt->win->wm);
 946         dpy->flts = list_remove(dpy->flts, dpy->flts, 1); }
 947         tag->dpys = list_remove(tag->dpys, tag->dpys, 1); }
 948          wm->tags = list_remove( wm->tags,  wm->tags, 1); }
 949
 950         /* Free remaining data */
 951         free(wm);
 952 }