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