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 /* Loca types */
  13 struct win_wm {
  14         list_t *col; // node in wm_cols
  15         list_t *row; // node in col->rows
  16 };
  17
  18 typedef enum {
  19         none, move, resize
  20 } drag_t;
  21
  22 typedef enum {
  23         split, stack, max, tab
  24 } mode_t;
  25
  26 typedef struct {
  27         int     width;
  28         mode_t  mode;
  29         win_t  *focus;
  30         list_t *rows;
  31 } col_t;
  32
  33 /* Mouse drag data */
  34 static drag_t move_mode;
  35 static win_t *move_win;
  36 static ptr_t  move_prev;
  37 static struct { int v, h; } move_dir;
  38
  39 /* Window management data */
  40 static win_t  *wm_focus;
  41 static list_t *wm_cols;
  42 static win_t  *wm_root;
  43
  44 /* Helper functions */
  45 static void set_mode(win_t *win, mode_t mode)
  46 {
  47         if (!win->wm || !win->wm->col)
  48                 return;
  49         col_t *col = win->wm->col->data;
  50         printf("set_mode: %p (%p), %d -> %d\n",
  51                         win, col, col->mode, mode);
  52         col->mode = mode;
  53         if (col->mode == split)
  54                 for (list_t *cur = col->rows; cur; cur = cur->next) {
  55                         win_t *row = cur->data;
  56                         row->h = wm_root->h;
  57                 }
  58         wm_update();
  59 }
  60
  61 static void set_focus(win_t *win)
  62 {
  63         if (win->wm && win->wm->col)
  64                 ((col_t*)win->wm->col->data)->focus = win;
  65
  66         /* - Only grab mouse button on unfocused window,
  67          *   this prevents stealing all mouse clicks from client windows,
  68          * - A better way may be to re-send mouse clicks to client windows
  69          *   using the return value from wm_handle_key */
  70         for (int i = key_mouse1; i < key_mouse7; i++) {
  71                 if (wm_focus)
  72                         sys_watch(wm_focus, i, MOD());
  73                 sys_unwatch(win, i, MOD());
  74         }
  75
  76         wm_focus = win;
  77         sys_focus(win);
  78 }
  79
  80 static void set_move(win_t *win, ptr_t ptr, drag_t drag)
  81 {
  82         printf("set_move: %d - %p@%d,%d\n",
  83                         drag, win, ptr.rx, ptr.ry);
  84         move_mode = drag;
  85         if (drag == move || drag == resize) {
  86                 move_win  = win;
  87                 move_prev = ptr;
  88                 int my = win->y + (win->h/2);
  89                 int mx = win->x + (win->w/2);
  90                 move_dir.v = ptr.ry < my ? -1 : +1;
  91                 move_dir.h = ptr.rx < mx ? -1 : +1;
  92         }
  93 }
  94
  95 static void print_txt(list_t *cols)
  96 {
  97         for (list_t *lcol = cols; lcol; lcol = lcol->next) {
  98                 col_t *col = lcol->data;
  99                 printf("col:\t           <%-9p [%-19p] >%-9p  -  %dpx @ %d !!%p\n",
 100                                 ( lcol->prev ? lcol->prev->data : NULL ),
 101                                 col,
 102                                 ( lcol->next ? lcol->next->data : NULL ),
 103                                 col->width, col->mode, col->focus);
 104                 for (list_t *lrow = col->rows; lrow; lrow = lrow->next) {
 105                         win_t *win = lrow->data;
 106                         printf("  win:\t^%-9p <%-9p [%p=%p] >%-9p  -  %4dpx focus=%d%d\n",
 107                                         win->wm->col->data,
 108                                         (win->wm->row->prev ? win->wm->row->prev->data : NULL),
 109                                         win->wm->row->data, win,
 110                                         (win->wm->row->next ? win->wm->row->next->data : NULL),
 111                                         win->h, col->focus == win, wm_focus == win);
 112                 }
 113         }
 114 }
 115
 116 static void cut_window(win_t *win)
 117 {
 118         list_t *lrow = win->wm->row;
 119         list_t *lcol = win->wm->col;
 120         col_t  *col  = lcol->data;
 121
 122         col->focus = lrow->prev ? lrow->prev->data  :
 123                      lrow->next ? lrow->next->data  : NULL;
 124
 125         wm_focus   = col->focus ? col->focus        :
 126                      lcol->prev ? ((col_t*)lcol->prev->data)->focus :
 127                      lcol->next ? ((col_t*)lcol->next->data)->focus : NULL;
 128
 129         col->rows  = list_remove(col->rows, lrow);
 130         if (col->rows == NULL && (lcol->next || lcol->prev))
 131                 wm_cols = list_remove(wm_cols, lcol);
 132 }
 133
 134 static void put_window(win_t *win, list_t *lcol)
 135 {
 136         if (lcol == NULL)
 137                 lcol = wm_cols = list_insert(wm_cols, new0(col_t));
 138
 139         col_t *col = lcol->data;
 140         int nrows = list_length(col->rows);
 141         if (col->focus) {
 142                 list_insert_after(col->focus->wm->row, win);
 143                 win->wm->row = col->focus->wm->row->next;
 144         } else {
 145                 col->rows = list_insert(col->rows, win);
 146                 win->wm->row = col->rows;
 147         }
 148         win->wm->col = lcol;
 149         col->focus   = win;
 150         wm_focus     = win;
 151
 152         win->h = wm_root->h / MAX(nrows,1);
 153         if (nrows == 0) {
 154                 int ncols = list_length(wm_cols);
 155                 col->width = wm_root->w / MAX(ncols-1,1);
 156         }
 157 }
 158
 159 static void shift_window(win_t *win, int col, int row)
 160 {
 161         printf("shift_window: %p - %+d,%+d\n", win, col, row);
 162         print_txt(wm_cols);
 163         printf("shift_window: >>>\n");
 164         if (row != 0) {
 165                 list_t *src = win->wm->row, *dst = NULL;
 166                 if (row < 0) dst = src->prev;
 167                 if (row > 0) dst = src->next;
 168                 if (src && dst) {
 169                         printf("swap: %p <-> %p\n", src->data, dst->data);
 170                         src->data = dst->data;
 171                         dst->data = win;
 172                         ((win_t*)src->data)->wm->row = src;
 173                         ((win_t*)dst->data)->wm->row = dst;
 174                         wm_update();
 175                 }
 176         } else {
 177                 int onlyrow = !win->wm->row->prev && !win->wm->row->next;
 178                 list_t *src = win->wm->col, *dst = NULL;
 179                 if (col < 0) {
 180                         if (!src->prev && !onlyrow)
 181                                 wm_cols = list_insert(wm_cols, new0(col_t));
 182                         dst = src->prev;
 183                 }
 184                 if (col > 0) {
 185                         if (!src->next && !onlyrow)
 186                                 wm_cols = list_append(wm_cols, new0(col_t));
 187                         dst = src->next;
 188                 }
 189                 if (src && dst) {
 190                         cut_window(win);
 191                         put_window(win, dst);
 192                         wm_update();
 193                 }
 194         }
 195         print_txt(wm_cols);
 196 }
 197
 198 static list_t *get_next(list_t *list, int forward)
 199 {
 200         list_t *next = forward ? list->next : list->prev;
 201         if (next == NULL)
 202                 while ((list = forward ? list->prev : list->next))
 203                         next = list;
 204         return next;
 205 }
 206 static void shift_focus(win_t *win, int col, int row)
 207 {
 208         printf("shift_focus: %p - %+d,%+d\n", win, col, row);
 209         if (row != 0) {
 210                 set_focus(get_next(win->wm->row, row > 0)->data);
 211                 if (((col_t*)win->wm->col->data)->mode != split)
 212                         wm_update();
 213         }
 214         if (col != 0) {
 215                 col_t *next = get_next(win->wm->col, col > 0)->data;
 216                 set_focus(next->focus->wm->row->data);
 217         }
 218 }
 219
 220 /* Window management functions */
 221 void wm_update(void)
 222 {
 223         int  x=0,  y=0; // Current window top-left position
 224         int tx=0, ty=0; // Total x/y size
 225         int mx=0, my=0; // Maximum x/y size (screen size)
 226         int       sy=0; // Size of focused stack window
 227
 228         /* Scale horizontally */
 229         x  = wm_root->x;
 230         mx = wm_root->w - (list_length(wm_cols)+1)*MARGIN;
 231         for (list_t *lx = wm_cols; lx; lx = lx->next)
 232                 tx += ((col_t*)lx->data)->width;
 233         for (list_t *lx = wm_cols; lx; lx = lx->next)
 234                 ((col_t*)lx->data)->width *= (float)mx / tx;
 235
 236         /* Scale each column vertically */
 237         for (list_t *lx = wm_cols; lx; lx = lx->next) {
 238                 col_t *col = lx->data;
 239                 ty = 0;
 240                 for (list_t *ly = col->rows; ly; ly = ly->next)
 241                         ty += ((win_t*)ly->data)->h;
 242                 y  = wm_root->y;
 243                 my = wm_root->h - (list_length(col->rows)+1)*MARGIN;
 244                 sy = my         - (list_length(col->rows)-1)*STACK;
 245                 for (list_t *ly = col->rows; ly; ly = ly->next) {
 246                         win_t *win = ly->data;
 247                         int height = 0;
 248                         switch (col->mode) {
 249                         case split:
 250                                 sys_move(win, x+MARGIN, y+MARGIN,
 251                                         col->width, win->h * ((float)my / ty));
 252                                 height = win->h;
 253                                 break;
 254                         case stack:
 255                                 height = col->focus == win ? sy : STACK;
 256                                 sys_move(win, x+MARGIN, y+MARGIN,
 257                                         col->width, height);
 258                                 break;
 259                         case max:
 260                         case tab:
 261                                 sys_move(win, x+MARGIN, 0+MARGIN,
 262                                         col->width, wm_root->h-2*MARGIN);
 263                                 if (col->focus == win)
 264                                         sys_raise(win);
 265                                 break;
 266                         }
 267                         y += height + MARGIN;
 268                 }
 269                 x += col->width + MARGIN;
 270         }
 271 }
 272
 273 int wm_handle_key(win_t *win, Key_t key, mod_t mod, ptr_t ptr)
 274 {
 275         if (!win || win == wm_root) return 0;
 276         //printf("wm_handle_key: %p - %x %x\n", win, key, mod);
 277
 278         /* Raise */
 279         if (key == key_f2)
 280                 return set_focus(win), 1;
 281         if (key == key_f4)
 282                 return sys_raise(win), 1;
 283         if (key == key_f1 && mod.MODKEY)
 284                 sys_raise(win);
 285         if (key == key_f12 && mod.MODKEY)
 286                 print_txt(wm_cols);
 287         if (key_mouse0 <= key && key <= key_mouse7)
 288                 sys_raise(win);
 289
 290         /* Movement commands */
 291         if (mod.MODKEY && mod.shift) {
 292                 switch (key) {
 293                 case 'h': return shift_window(win,-1, 0), 1;
 294                 case 'j': return shift_window(win, 0,+1), 1;
 295                 case 'k': return shift_window(win, 0,-1), 1;
 296                 case 'l': return shift_window(win,+1, 0), 1;
 297                 default: break;
 298                 }
 299         }
 300         else if (mod.MODKEY) {
 301                 switch (key) {
 302                 case 'h': return shift_focus(win,-1, 0), 1;
 303                 case 'j': return shift_focus(win, 0,+1), 1;
 304                 case 'k': return shift_focus(win, 0,-1), 1;
 305                 case 'l': return shift_focus(win,+1, 0), 1;
 306                 default: break;
 307                 }
 308         }
 309
 310         /* Column mode commands */
 311         if (mod.MODKEY) {
 312                 switch (key) {
 313                 case 'd': return set_mode(win, split), 1;
 314                 case 's': return set_mode(win, stack), 1;
 315                 case 'm': return set_mode(win, max),   1;
 316                 case 't': return set_mode(win, tab),   1;
 317                 default: break;
 318                 }
 319         }
 320
 321         /* Mouse movement */
 322         if (key_mouse0 <= key && key <= key_mouse7 && mod.up)
 323                 return set_move(win,ptr,none), 1;
 324         else if (key == key_mouse1 && mod.MODKEY)
 325                 return set_move(win,ptr,move), 1;
 326         else if (key == key_mouse3 && mod.MODKEY)
 327                 return set_move(win,ptr,resize), 1;
 328
 329         /* Focus change */
 330         if (key == key_enter)
 331                 return set_focus(win), 1;
 332
 333         if (key_mouse0 <= key && key <= key_mouse7)
 334                 return set_focus(win), 0;
 335
 336         /* Reset focus after after focus change,
 337          * not sure what is causing the focus change in the first place
 338          * but preventing that would be a better solution */
 339         if (key == key_focus)
 340                 set_focus(wm_focus);
 341
 342         return 0;
 343 }
 344
 345 int wm_handle_ptr(win_t *cwin, ptr_t ptr)
 346 {
 347         //printf("wm_handle_ptr: %p - %d,%d %d,%d (%d) -- \n",
 348         //              cwin, ptr.x, ptr.y, ptr.rx, ptr.ry, move_mode);
 349
 350         if (move_mode == none)
 351                 return 0;
 352
 353         /* Tiling */
 354         int dx = ptr.rx - move_prev.rx;
 355         int dy = ptr.ry - move_prev.ry;
 356         move_prev = ptr;
 357         if (move_mode == resize) {
 358                 list_t *row  = move_win->wm->row;
 359                 list_t *col  = move_win->wm->col;
 360                 list_t *vert = move_dir.v < 0 ? row->prev : row->next;
 361                 list_t *horz = move_dir.h < 0 ? col->prev : col->next;
 362                 if (vert) {
 363                         ((win_t*)row->data)->h      += move_dir.v * dy;
 364                         ((win_t*)vert->data)->h     -= move_dir.v * dy;
 365                 }
 366                 if (horz) {
 367                         ((col_t*)col->data)->width  += move_dir.h * dx;
 368                         ((col_t*)horz->data)->width -= move_dir.h * dx;
 369                 }
 370                 wm_update();
 371         }
 372
 373         /* Floating */
 374         //win_t *mwin = move_win;
 375         //int dx = ptr.rx - move_prev.rx;
 376         //int dy = ptr.ry - move_prev.ry;
 377         //move_prev = ptr;
 378         //if (move_mode == move)
 379         //      sys_move(mwin, mwin->x+dx, mwin->y+dy, mwin->w, mwin->h);
 380         //else if (move_mode == resize)
 381         //      sys_move(mwin, mwin->x, mwin->y, mwin->w+dx, mwin->h+dy);
 382
 383         return 0;
 384 }
 385
 386 void wm_insert(win_t *win)
 387 {
 388         printf("wm_insert: %p\n", win);
 389         print_txt(wm_cols);
 390
 391         /* Initialize window */
 392         win->wm = new0(win_wm_t);
 393         sys_watch(win, key_enter, MOD());
 394         sys_watch(win, key_focus, MOD());
 395
 396         /* Add to screen */
 397         list_t *lcol = wm_focus && wm_focus->wm ?
 398                 wm_focus->wm->col : wm_cols;
 399         put_window(win, lcol);
 400
 401         /* Arrange */
 402         wm_update();
 403         sys_focus(wm_focus);
 404         print_txt(wm_cols);
 405 }
 406
 407 void wm_remove(win_t *win)
 408 {
 409         printf("wm_remove: %p - (%p,%p)\n", win,
 410                         win->wm->col, win->wm->row);
 411         print_txt(wm_cols);
 412         cut_window(win);
 413         if (wm_focus)
 414                 sys_focus(wm_focus);
 415         else
 416                 sys_focus(wm_root);
 417         wm_update();
 418         print_txt(wm_cols);
 419 }
 420
 421 void wm_init(win_t *root)
 422 {
 423         printf("wm_init: %p\n", root);
 424         wm_root = root;
 425         sys_watch(root, key_f1,     MOD(.MODKEY=1));
 426         sys_watch(root, key_f12,    MOD(.MODKEY=1));
 427         sys_watch(root, key_mouse1, MOD(.MODKEY=1));
 428         sys_watch(root, key_mouse3, MOD(.MODKEY=1));
 429         sys_watch(root, key_enter,  MOD());
 430         sys_watch(root, key_focus,  MOD());
 431         Key_t keys_m[] = {'h', 'j', 'k', 'l', 'd', 's', 'm', 't'};
 432         Key_t keys_s[] = {'h', 'j', 'k', 'l'};
 433         for (int i = 0; i < countof(keys_m); i++)
 434                 sys_watch(root, keys_m[i], MOD(.MODKEY=1));
 435         for (int i = 0; i < countof(keys_s); i++)
 436                 sys_watch(root, keys_s[i], MOD(.MODKEY=1,.shift=1));
 437 }