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

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3
   4 #include "util.h"
   5 #include "sys.h"
   6 #include "wm.h"
   7
   8 #define MODKEY alt
   9 #define MARGIN 0
  10 #define STACK  25
  11
  12 /* Enums */
  13 typedef enum {
  14         none, move, resize
  15 } drag_t;
  16
  17 typedef enum {
  18         split, stack, max, tab
  19 } mode_t;
  20
  21
  22 /* Window structure types */
  23 struct win_wm { };
  24
  25 typedef struct {
  26         win_t  *win;
  27         int     height;
  28 } row_t;
  29
  30 typedef struct {
  31         list_t *rows; // of row_t
  32         row_t  *row;
  33         int     width;
  34         mode_t  mode;
  35 } col_t;
  36
  37 typedef struct {
  38         list_t *cols; // of col_t
  39         col_t  *col;
  40         win_t  *geom;
  41 } dpy_t;
  42
  43 typedef struct {
  44         list_t *dpys; // of dpy_t
  45         dpy_t  *dpy;
  46         int     name;
  47 } tag_t;
  48
  49 typedef struct {
  50         list_t *tags; // of tag_t
  51         tag_t  *tag;
  52         win_t  *root;
  53         list_t *screens;
  54 } wm_t;
  55
  56 /* Mouse drag data */
  57 static drag_t  move_mode;
  58 static list_t *move_lrow;
  59 static list_t *move_lcol;
  60 static ptr_t   move_prev;
  61 static struct { int v, h; } move_dir;
  62
  63 /* Window management data */
  64 static wm_t  *wm;
  65 #define wm_win   wm->tag->dpy->col->row->win
  66 #define wm_row   wm->tag->dpy->col->row
  67 #define wm_col   wm->tag->dpy->col
  68 #define wm_dpy   wm->tag->dpy
  69 #define wm_tag   wm->tag
  70 #define wm_focus (wm_tag && wm_dpy && wm_col && wm_row ? wm_win : NULL)
  71
  72 #define ROW(l) ((row_t*)(l)->data)
  73 #define COL(l) ((col_t*)(l)->data)
  74 #define DPY(l) ((dpy_t*)(l)->data)
  75 #define TAG(l) ((tag_t*)(l)->data)
  76
  77 /* Helper functions */
  78 static int searchl(tag_t *tag, win_t *target,
  79                 list_t **_dpy, list_t **_col, list_t **_row)
  80 {
  81         for (list_t *dpy =     tag ->dpys; dpy; dpy = dpy->next)
  82         for (list_t *col = DPY(dpy)->cols; col; col = col->next)
  83         for (list_t *row = COL(col)->rows; row; row = row->next) {
  84                 win_t *win = ROW(row)->win;
  85                 if (win == target) {
  86                         if (_dpy) *_dpy = dpy;
  87                         if (_col) *_col = col;
  88                         if (_row) *_row = row;
  89                         return 1;
  90                 }
  91         }
  92         return 0;
  93 }
  94
  95 static int search(tag_t *tag, win_t *target,
  96                 dpy_t **_dpy, col_t **_col, row_t **_row)
  97 {
  98         list_t *dpy, *col, *row;
  99         if (searchl(tag, target, &dpy, &col, &row)) {
 100                 if (_dpy) *_dpy = DPY(dpy);
 101                 if (_col) *_col = COL(col);
 102                 if (_row) *_row = ROW(row);
 103                 return 1;
 104         }
 105         return 0;
 106 }
 107
 108 static void set_mode(win_t *win, mode_t mode)
 109 {
 110         col_t *col;
 111         search(wm_tag, win, NULL, &col, NULL);
 112         printf("set_mode: %p, %d -> %d\n",
 113                         col, col->mode, mode);
 114         col->mode = mode;
 115         if (col->mode == split)
 116                 for (list_t *cur = col->rows; cur; cur = cur->next) {
 117                         row_t *row = cur->data;
 118                         row->height = wm_dpy->geom->h;
 119                 }
 120         wm_update();
 121 }
 122
 123 static void set_focus(win_t *win)
 124 {
 125         /* - Only grab mouse button on unfocused window,
 126          *   this prevents stealing all mouse clicks from client windows,
 127          * - A better way may be to re-send mouse clicks to client windows
 128          *   using the return value from wm_handle_key */
 129         for (int i = key_mouse1; i < key_mouse7; i++) {
 130                 if (wm_focus)
 131                         sys_watch(wm_focus, i, MOD());
 132                 sys_unwatch(win, i, MOD());
 133         }
 134
 135         dpy_t *dpy; col_t *col; row_t *row;
 136         if (search(wm_tag, win, &dpy, &col, &row)) {
 137                 wm_dpy = dpy;
 138                 wm_col = col;
 139                 wm_row = row;
 140         }
 141         sys_focus(win);
 142 }
 143
 144 static void set_move(win_t *win, ptr_t ptr, drag_t drag)
 145 {
 146         printf("set_move: %d - %p@%d,%d\n",
 147                         drag, win, ptr.rx, ptr.ry);
 148         move_mode = drag;
 149         if (drag == move || drag == resize) {
 150                 searchl(wm_tag, win, NULL, &move_lcol, &move_lrow);
 151                 move_prev = ptr;
 152                 int my = win->y + (win->h/2);
 153                 int mx = win->x + (win->w/2);
 154                 move_dir.v = ptr.ry < my ? -1 : +1;
 155                 move_dir.h = ptr.rx < mx ? -1 : +1;
 156         }
 157 }
 158
 159 static void print_txt(tag_t *tag)
 160 {
 161         for (list_t *ldpy = tag->dpys; ldpy; ldpy = ldpy->next) {
 162                 dpy_t *dpy  = ldpy->data;
 163                 win_t *geom = dpy->geom;
 164                 printf("dpy:     <%-9p [%-20p] >%-9p  -  %d,%d %dx%d\n",
 165                                 ldpy->prev, ldpy, ldpy->next,
 166                                 geom->x, geom->y, geom->h, geom->w);
 167         for (list_t *lcol = dpy->cols; lcol; lcol = lcol->next) {
 168                 col_t *col = lcol->data;
 169                 printf("  col:   <%-9p [%-20p] >%-9p  -  %dpx @ %d !!%p\n",
 170                                 lcol->prev, lcol, lcol->next,
 171                                 col->width, col->mode, col->row);
 172         for (list_t *lrow = col->rows; lrow; lrow = lrow->next) {
 173                 row_t *row = lrow->data;
 174                 win_t *win = row->win;
 175                 printf("    win: <%-9p [%p>>%p] >%-9p  -  %4dpx focus=%d%d\n",
 176                                 lrow->prev, lrow, win, lrow->next,
 177                                 win->h, col->row == row, wm_focus == win);
 178         } } }
 179 }
 180
 181 static void cut_win(win_t *win)
 182 {
 183         list_t *ldpy, *lcol, *lrow;
 184         searchl(wm_tag, win, &ldpy, &lcol, &lrow);
 185         col_t  *col  = COL(lcol);
 186         dpy_t  *dpy  = DPY(ldpy);
 187
 188         col->row  = lrow->prev ? lrow->prev->data :
 189                     lrow->next ? lrow->next->data : NULL;
 190         col->rows = list_remove(col->rows, lrow);
 191
 192         if (col->rows == NULL && (lcol->next || lcol->prev)) {
 193                 dpy->col  = lcol->prev ? lcol->prev->data :
 194                             lcol->next ? lcol->next->data : NULL;
 195                 dpy->cols = list_remove(dpy->cols, lcol);
 196         }
 197 }
 198
 199 static void put_win(win_t *win, dpy_t *dpy, col_t *col)
 200 {
 201         row_t *row = new0(row_t);
 202         row->win = win;
 203
 204         if (col == NULL) {
 205                 col = new0(col_t);
 206                 dpy->cols = list_insert(dpy->cols, col);
 207         }
 208
 209         int nrows = list_length(col->rows);
 210         if (col->row) {
 211                 list_t *prev = list_find(col->rows, col->row);
 212                 list_insert_after(prev, row);
 213         } else {
 214                 col->rows = list_insert(col->rows, row);
 215         }
 216         wm_tag->dpy           = dpy;
 217         wm_tag->dpy->col      = col;
 218         wm_tag->dpy->col->row = row;
 219
 220         row->height = dpy->geom->h / MAX(nrows,1);
 221         if (nrows == 0) {
 222                 int ncols = list_length(dpy->cols);
 223                 col->width = dpy->geom->w / MAX(ncols-1,1);
 224         }
 225 }
 226
 227 static void shift_window(win_t *win, int col, int row)
 228 {
 229         if (!win) return;
 230         printf("shift_window: %p - %+d,%+d\n", win, col, row);
 231         print_txt(wm_tag);
 232         printf("shift_window: >>>\n");
 233         list_t *ldpy, *lcol, *lrow;
 234         searchl(wm_tag, win, &ldpy, &lcol, &lrow);
 235         dpy_t *dpy = ldpy->data;
 236         if (row != 0) {
 237                 list_t *src = lrow, *dst = NULL;
 238                 if (row < 0) dst = src->prev;
 239                 if (row > 0) dst = src->next;
 240                 if (src && dst) {
 241                         printf("swap: %p <-> %p\n", src->data, dst->data);
 242                         row_t *tmp = src->data;
 243                         src->data = dst->data;
 244                         dst->data = tmp;
 245                         goto update;
 246                 }
 247         } else {
 248                 int onlyrow = !lrow->prev && !lrow->next;
 249                 list_t *src = lcol, *dst = NULL;
 250                 if (col < 0) {
 251                         if (src->prev) {
 252                                 dst = src->prev;
 253                         } else if (!onlyrow) {
 254                                 dpy->cols = list_insert(dpy->cols, new0(col_t));
 255                                 dst = src->prev;
 256                         } else if (ldpy->prev) {
 257                                 dpy = ldpy->prev->data;
 258                                 dst = list_last(dpy->cols);
 259                         } else {
 260                                 return;
 261                         }
 262                 }
 263                 if (col > 0) {
 264                         if (src->next) {
 265                                 dst = src->next;
 266                         } else if (!onlyrow) {
 267                                 dpy->cols = list_append(dpy->cols, new0(col_t));
 268                                 dst = src->next;
 269                         } else if (ldpy->next) {
 270                                 dpy = ldpy->next->data;
 271                                 dst = dpy->cols;
 272                         } else {
 273                                 return;
 274                         }
 275                 }
 276                 cut_win(win);
 277                 put_win(win, dpy, dst ? dst->data : NULL);
 278                 goto update;
 279         }
 280 update:
 281         print_txt(wm_tag);
 282         wm_update();
 283 }
 284
 285 static list_t *get_next(list_t *list, int forward)
 286 {
 287         list_t *next = forward ? list->next : list->prev;
 288         if (next == NULL) {
 289                 next = list;
 290                 while ((list = forward ? next->prev : next->next))
 291                         next = list;
 292         }
 293         return next;
 294 }
 295 static void shift_focus(int cols, int rows)
 296 {
 297         printf("shift_focus: %+d,%+d\n", cols, rows);
 298         if (rows != 0 && wm_focus) {
 299                 list_t *dpy, *col, *row;
 300                 searchl(wm_tag, wm_focus, &dpy, &col, &row);
 301                 row_t *next = get_next(row, rows > 0)->data;
 302                 set_focus(next->win);
 303                 if (COL(col)->mode != split)
 304                         wm_update();
 305         }
 306         if (cols != 0) {
 307                 list_t *dpy, *col, *row, *ndpy, *ncol = NULL;
 308                 if (wm_focus) {
 309                         searchl(wm_tag, wm_focus, &dpy, &col, &row);
 310                         ncol = cols > 0 ? col->next : col->prev;
 311                 } else {
 312                         dpy = list_find(wm_tag->dpys, wm_dpy);
 313                 }
 314                 if (ncol == NULL) {
 315                         ndpy = get_next(dpy, cols > 0);
 316                         ncol = cols > 0 ? DPY(ndpy)->cols :
 317                                 list_last(DPY(ndpy)->cols);
 318                         wm_dpy = ndpy->data;
 319                 }
 320                 if (ncol && COL(ncol) && COL(ncol)->row)
 321                         set_focus(COL(ncol)->row->win);
 322                 else
 323                         sys_focus(wm->root);
 324         }
 325 }
 326
 327 /* Window management functions */
 328 void wm_update_dpy(dpy_t *dpy)
 329 {
 330         int  x=0,  y=0; // Current window top-left position
 331         int tx=0, ty=0; // Total x/y size
 332         int mx=0, my=0; // Maximum x/y size (screen size)
 333         int       sy=0; // Size of focused stack window
 334
 335         /* Scale horizontally */
 336         x  = dpy->geom->x;
 337         mx = dpy->geom->w - (list_length(dpy->cols)+1)*MARGIN;
 338         for (list_t *lx = dpy->cols; lx; lx = lx->next)
 339                 tx += COL(lx)->width;
 340         for (list_t *lx = dpy->cols; lx; lx = lx->next)
 341                 COL(lx)->width *= (float)mx / tx;
 342
 343         /* Scale each column vertically */
 344         for (list_t *lx = dpy->cols; lx; lx = lx->next) {
 345                 col_t *col = lx->data;
 346                 ty = 0;
 347                 for (list_t *ly = col->rows; ly; ly = ly->next)
 348                         ty += ROW(ly)->height;
 349                 y  = dpy->geom->y;
 350                 my = dpy->geom->h - (list_length(col->rows)+1)*MARGIN;
 351                 sy = my              - (list_length(col->rows)-1)*STACK;
 352                 for (list_t *ly = col->rows; ly; ly = ly->next) {
 353                         win_t *win = ROW(ly)->win;
 354                         win->h = ROW(ly)->height;
 355                         int height = 0;
 356                         switch (col->mode) {
 357                         case split:
 358                                 sys_move(win, x+MARGIN, y+MARGIN,
 359                                         col->width, win->h * ((float)my / ty));
 360                                 height = win->h;
 361                                 break;
 362                         case stack:
 363                                 height = col->row->win == win ? sy : STACK;
 364                                 sys_move(win, x+MARGIN, y+MARGIN,
 365                                         col->width, height);
 366                                 break;
 367                         case max:
 368                         case tab:
 369                                 sys_move(win, x+MARGIN, 0+MARGIN,
 370                                         col->width, dpy->geom->h-2*MARGIN);
 371                                 if (col->row->win == win)
 372                                         sys_raise(win);
 373                                 break;
 374                         }
 375                         y += height + MARGIN;
 376                         ROW(ly)->height = win->h;
 377                 }
 378                 x += col->width + MARGIN;
 379         }
 380 }
 381 void wm_update(void)
 382 {
 383         for (list_t *cur = wm_tag->dpys; cur; cur = cur->next)
 384                 wm_update_dpy(cur->data);
 385 }
 386
 387 int wm_handle_key(win_t *win, Key_t key, mod_t mod, ptr_t ptr)
 388 {
 389         if (!win || win == wm_dpy->geom) return 0;
 390         //printf("wm_handle_key: %p - %x %c%c%c%c%c\n", win, key,
 391         //      mod.up    ? '^' : 'v',
 392         //      mod.alt   ? 'a' : '-',
 393         //      mod.ctrl  ? 'c' : '-',
 394         //      mod.shift ? 's' : '-',
 395         //      mod.win   ? 'w' : '-');
 396
 397         /* Mouse movement */
 398         if (key_mouse0 <= key && key <= key_mouse7 && mod.up)
 399                 return set_move(win,ptr,none), 1;
 400         else if (key == key_mouse1 && mod.MODKEY)
 401                 return set_move(win,ptr,move), 1;
 402         else if (key == key_mouse3 && mod.MODKEY)
 403                 return set_move(win,ptr,resize), 1;
 404
 405         /* Only handle key-down */
 406         if (mod.up)
 407                 return 0;
 408
 409         /* Misc */
 410         if (mod.MODKEY) {
 411                 if (key == key_f1) return sys_raise(win), 1;
 412                 if (key == key_f2) return set_focus(win), 1;
 413                 if (key == key_f5) return wm_update(),    1;
 414                 if (key == key_f6) return print_txt(wm_tag), 1;
 415         }
 416         if (key_mouse0 <= key && key <= key_mouse7)
 417                 sys_raise(win);
 418
 419         /* Movement commands */
 420         if (mod.MODKEY && mod.shift) {
 421                 switch (key) {
 422                 case 'h': return shift_window(wm_focus,-1, 0), 1;
 423                 case 'j': return shift_window(wm_focus, 0,+1), 1;
 424                 case 'k': return shift_window(wm_focus, 0,-1), 1;
 425                 case 'l': return shift_window(wm_focus,+1, 0), 1;
 426                 default: break;
 427                 }
 428         }
 429         else if (mod.MODKEY) {
 430                 switch (key) {
 431                 case 'h': return shift_focus(-1, 0), 1;
 432                 case 'j': return shift_focus( 0,+1), 1;
 433                 case 'k': return shift_focus( 0,-1), 1;
 434                 case 'l': return shift_focus(+1, 0), 1;
 435                 default: break;
 436                 }
 437         }
 438
 439         /* Column mode commands */
 440         if (mod.MODKEY) {
 441                 switch (key) {
 442                 case 'd': return set_mode(win, split), 1;
 443                 case 's': return set_mode(win, stack), 1;
 444                 case 'm': return set_mode(win, max),   1;
 445                 case 't': return set_mode(win, tab),   1;
 446                 default: break;
 447                 }
 448         }
 449
 450         /* Focus change */
 451         if (key == key_enter)
 452                 return set_focus(win), 1;
 453
 454         if (key_mouse0 <= key && key <= key_mouse7)
 455                 return set_focus(win), 0;
 456
 457         /* Reset focus after after focus change,
 458          * not sure what is causing the focus change in the first place
 459          * but preventing that would be a better solution */
 460         if (key == key_focus)
 461                 sys_focus(wm_focus ?: wm->root);
 462
 463         return 0;
 464 }
 465
 466 int wm_handle_ptr(win_t *cwin, ptr_t ptr)
 467 {
 468         //printf("wm_handle_ptr: %p - %d,%d %d,%d (%d) -- \n",
 469         //              cwin, ptr.x, ptr.y, ptr.rx, ptr.ry, move_mode);
 470
 471         if (move_mode == none)
 472                 return 0;
 473
 474         /* Tiling */
 475         int dx = ptr.rx - move_prev.rx;
 476         int dy = ptr.ry - move_prev.ry;
 477         move_prev = ptr;
 478         if (move_mode == resize) {
 479                 list_t *vert = move_dir.v < 0 ? move_lrow->prev : move_lrow->next;
 480                 list_t *horz = move_dir.h < 0 ? move_lcol->prev : move_lcol->next;
 481                 if (vert) {
 482                         ROW(move_lrow)->height += move_dir.v * dy;
 483                         ROW(vert)->height      -= move_dir.v * dy;
 484                 }
 485                 if (horz) {
 486                         COL(move_lcol)->width  += move_dir.h * dx;
 487                         COL(horz)->width       -= move_dir.h * dx;
 488                 }
 489                 wm_update();
 490         }
 491
 492         /* Floating */
 493         //win_t *mwin = move_win;
 494         //int dx = ptr.rx - move_prev.rx;
 495         //int dy = ptr.ry - move_prev.ry;
 496         //move_prev = ptr;
 497         //if (move_mode == move)
 498         //      sys_move(mwin, mwin->x+dx, mwin->y+dy, mwin->w, mwin->h);
 499         //else if (move_mode == resize)
 500         //      sys_move(mwin, mwin->x, mwin->y, mwin->w+dx, mwin->h+dy);
 501
 502         return 0;
 503 }
 504
 505 void wm_insert(win_t *win)
 506 {
 507         printf("wm_insert: %p\n", win);
 508         print_txt(wm_tag);
 509
 510         /* Initialize window */
 511         win->wm = new0(win_wm_t);
 512         sys_watch(win, key_enter, MOD());
 513         sys_watch(win, key_focus, MOD());
 514
 515         /* Add to screen */
 516         put_win(win, wm_dpy, wm_col);
 517
 518         /* Arrange */
 519         wm_update();
 520         sys_focus(wm_focus);
 521         print_txt(wm_tag);
 522 }
 523
 524 void wm_remove(win_t *win)
 525 {
 526         printf("wm_remove: %p\n", win);
 527         print_txt(wm_tag);
 528         cut_win(win);
 529         if (wm_focus)
 530                 sys_focus(wm_focus);
 531         else
 532                 sys_focus(wm->root);
 533         wm_update();
 534         print_txt(wm_tag);
 535 }
 536
 537 tag_t *tag_new(list_t *screens, int name)
 538 {
 539         tag_t *tag = new0(tag_t);
 540         tag->name  = name;
 541         for (list_t *cur = screens; cur; cur = cur->next) {
 542                 dpy_t *dpy  = new0(dpy_t);
 543                 dpy->geom = cur->data;
 544                 tag->dpys = list_append(tag->dpys, dpy);
 545         }
 546         tag->dpy  = tag->dpys->data;
 547         return tag;
 548 }
 549
 550 void wm_init(win_t *root)
 551 {
 552         printf("wm_init: %p\n", root);
 553
 554         wm          = new0(wm_t);
 555         wm->root    = root;
 556         wm->screens = sys_info(root);
 557         wm->tag     = tag_new(wm->screens, 1);
 558         wm->tags    = list_insert(NULL, wm->tag);
 559
 560         Key_t keys_e[] = {key_enter, key_focus};
 561         Key_t keys_s[] = {'h', 'j', 'k', 'l'};
 562         Key_t keys_m[] = {'h', 'j', 'k', 'l', 'd', 's', 'm', 't',
 563                 key_f1, key_f2, key_f5, key_f6, key_mouse1, key_mouse3};
 564         for (int i = 0; i < countof(keys_e); i++)
 565                 sys_watch(root, keys_e[i],  MOD());
 566         for (int i = 0; i < countof(keys_m); i++)
 567                 sys_watch(root, keys_m[i], MOD(.MODKEY=1));
 568         for (int i = 0; i < countof(keys_s); i++)
 569                 sys_watch(root, keys_s[i], MOD(.MODKEY=1,.shift=1));
 570 }