git.sur5r.net Git - i3/i3/blob - src/table.c

   1 /*
   2  * vim:ts=8:expandtab
   3  *
   4  * i3 - an improved dynamic tiling window manager
   5  *
   6  * © 2009 Michael Stapelberg and contributors
   7  *
   8  * See file LICENSE for license information.
   9  *
  10  * table.c: Functions/macros for easy modifying/accessing of _the_ table (defining our
  11  *          layout).
  12  *
  13  */
  14 #include <stdio.h>
  15 #include <assert.h>
  16 #include <stdlib.h>
  17 #include <string.h>
  18 #include <sys/types.h>
  19 #include <unistd.h>
  20 #include <stdbool.h>
  21 #include <assert.h>
  22
  23 #include "data.h"
  24 #include "table.h"
  25 #include "util.h"
  26 #include "i3.h"
  27
  28 int current_workspace = 0;
  29 Workspace workspaces[10];
  30 /* Convenience pointer to the current workspace */
  31 Workspace *c_ws = &workspaces[0];
  32 int current_col = 0;
  33 int current_row = 0;
  34
  35 /*
  36  * Initialize table
  37  *
  38  */
  39 void init_table() {
  40         memset(workspaces, 0, sizeof(workspaces));
  41
  42         for (int i = 0; i < 10; i++) {
  43                 workspaces[i].screen = NULL;
  44                 workspaces[i].num = i;
  45                 SLIST_INIT(&(workspaces[i].dock_clients));
  46                 expand_table_cols(&(workspaces[i]));
  47                 expand_table_rows(&(workspaces[i]));
  48         }
  49 }
  50
  51 static void new_container(Workspace *workspace, Container **container, int col, int row) {
  52         Container *new;
  53         new = *container = calloc(sizeof(Container), 1);
  54         CIRCLEQ_INIT(&(new->clients));
  55         new->colspan = 1;
  56         new->rowspan = 1;
  57         new->col = col;
  58         new->row = row;
  59         new->workspace = workspace;
  60 }
  61
  62 /*
  63  * Add one row to the table
  64  *
  65  */
  66 void expand_table_rows(Workspace *workspace) {
  67         workspace->rows++;
  68
  69         for (int c = 0; c < workspace->cols; c++) {
  70                 workspace->table[c] = realloc(workspace->table[c], sizeof(Container*) * workspace->rows);
  71                 new_container(workspace, &(workspace->table[c][workspace->rows-1]), c, workspace->rows-1);
  72         }
  73 }
  74
  75 /*
  76  * Add one column to the table
  77  *
  78  */
  79 void expand_table_cols(Workspace *workspace) {
  80         workspace->cols++;
  81
  82         workspace->table = realloc(workspace->table, sizeof(Container**) * workspace->cols);
  83         workspace->table[workspace->cols-1] = calloc(sizeof(Container*) * workspace->rows, 1);
  84         for (int c = 0; c < workspace->rows; c++)
  85                 new_container(workspace, &(workspace->table[workspace->cols-1][c]), workspace->cols-1, c);
  86 }
  87
  88 static void shrink_table_cols(Workspace *workspace) {
  89         workspace->cols--;
  90         free(workspace->table[workspace->cols]);
  91         workspace->table = realloc(workspace->table, sizeof(Container**) * workspace->cols);
  92 }
  93
  94 static void shrink_table_rows(Workspace *workspace) {
  95         workspace->rows--;
  96         for (int cols = 0; cols < workspace->cols; cols++)
  97                 workspace->table[cols] = realloc(workspace->table[cols], sizeof(Container*) * workspace->rows);
  98 }
  99
 100
 101 /*
 102  * Performs simple bounds checking for the given column/row
 103  *
 104  */
 105 bool cell_exists(int col, int row) {
 106         return (col >= 0 && col < c_ws->cols) &&
 107                (row >= 0 && row < c_ws->rows);
 108 }
 109
 110 static void move_columns_from(xcb_connection_t *conn, Workspace *workspace, int cols) {
 111         printf("firstly freeing \n");
 112
 113         /* Clean up the column to be freed */
 114         for (int rows = 0; rows < workspace->rows; rows++) {
 115                 Container *old_container = workspace->table[cols-1][rows];
 116
 117                 if (old_container->mode == MODE_STACK)
 118                         leave_stack_mode(conn, old_container);
 119
 120                 free(old_container);
 121         }
 122
 123         for (; cols < workspace->cols; cols++)
 124                 for (int rows = 0; rows < workspace->rows; rows++) {
 125                         printf("at col = %d, row = %d\n", cols, rows);
 126                         Container *new_container = workspace->table[cols][rows];
 127
 128                         printf("moving cols = %d to cols -1 = %d\n", cols, cols-1);
 129                         workspace->table[cols-1][rows] = new_container;
 130
 131                         new_container->row = rows;
 132                         new_container->col = cols-1;
 133                 }
 134 }
 135
 136 static void move_rows_from(xcb_connection_t *conn, Workspace *workspace, int rows) {
 137         for (int cols = 0; cols < workspace->cols; cols++) {
 138                 Container *old_container = workspace->table[cols][rows-1];
 139
 140                 if (old_container->mode == MODE_STACK)
 141                         leave_stack_mode(conn, old_container);
 142
 143                 free(old_container);
 144         }
 145         for (; rows < workspace->rows; rows++)
 146                 for (int cols = 0; cols < workspace->cols; cols++) {
 147                         Container *new_container = workspace->table[cols][rows];
 148
 149                         printf("moving rows = %d to rows -1 = %d\n", rows, rows - 1);
 150                         workspace->table[cols][rows-1] = new_container;
 151
 152                         new_container->row = rows-1;
 153                         new_container->col = cols;
 154                 }
 155 }
 156
 157 void dump_table(xcb_connection_t *conn, Workspace *workspace) {
 158         printf("dump_table()\n");
 159         for (int cols = 0; cols < workspace->cols; cols++) {
 160                 for (int rows = 0; rows < workspace->rows; rows++) {
 161                         Container *con = workspace->table[cols][rows];
 162                         printf("----\n");
 163                         printf("at col=%d, row=%d\n", cols, rows);
 164                         printf("currently_focused = %p\n", con->currently_focused);
 165                         Client *loop;
 166                         CIRCLEQ_FOREACH(loop, &(con->clients), clients) {
 167                                 printf("got client %08x / %s\n", loop->child, loop->name);
 168                         }
 169                         printf("----\n");
 170                 }
 171         }
 172         printf("done\n");
 173 }
 174
 175 /*
 176  * Shrinks the table by "compacting" it, that is, removing completely empty rows/columns
 177  *
 178  */
 179 void cleanup_table(xcb_connection_t *conn, Workspace *workspace) {
 180         printf("cleanup_table()\n");
 181
 182         /* Check for empty columns if we got more than one column */
 183         for (int cols = 0; (workspace->cols > 1) && (cols < workspace->cols);) {
 184                 bool completely_empty = true;
 185                 for (int rows = 0; rows < workspace->rows; rows++)
 186                         if (workspace->table[cols][rows]->currently_focused != NULL) {
 187                                 completely_empty = false;
 188                                 break;
 189                         }
 190                 if (completely_empty) {
 191                         printf("Removing completely empty column %d\n", cols);
 192                         if (cols < (workspace->cols - 1))
 193                                 move_columns_from(conn, workspace, cols+1);
 194                         shrink_table_cols(workspace);
 195
 196                         if (workspace->current_col >= workspace->cols)
 197                                 workspace->current_col = workspace->cols - 1;
 198                 } else cols++;
 199         }
 200
 201         /* Check for empty rows if we got more than one row*/
 202         for (int rows = 0; (workspace->rows > 1) && (rows < workspace->rows);) {
 203                 bool completely_empty = true;
 204                 for (int cols = 0; cols < workspace->cols; cols++)
 205                         if (workspace->table[cols][rows]->currently_focused != NULL) {
 206                                 completely_empty = false;
 207                                 break;
 208                         }
 209                 if (completely_empty) {
 210                         printf("Removing completely empty row %d\n", rows);
 211                         if (rows < (workspace->rows - 1))
 212                                 move_rows_from(conn, workspace, rows+1);
 213                         shrink_table_rows(workspace);
 214
 215                         if (workspace->current_row >= workspace->rows)
 216                                 workspace->current_row = workspace->rows - 1;
 217                 } else rows++;
 218         }
 219
 220         /* Boundary checking for current_col and current_row */
 221         if (current_col >= c_ws->cols)
 222                 current_col = c_ws->cols-1;
 223
 224         if (current_row >= c_ws->rows)
 225                 current_row = c_ws->rows-1;
 226
 227         if (CUR_CELL->currently_focused != NULL)
 228                 set_focus(conn, CUR_CELL->currently_focused);
 229 }
 230
 231 /*
 232  * Fixes col/rowspan (makes sure there are no overlapping windows)
 233  *
 234  */
 235 void fix_colrowspan(xcb_connection_t *conn, Workspace *workspace) {
 236         printf("Fixing col/rowspan\n");
 237
 238         for (int cols = 0; cols < workspace->cols; cols++)
 239                 for (int rows = 0; rows < workspace->rows; rows++) {
 240                         Container *con = workspace->table[cols][rows];
 241                         if (con->colspan > 1) {
 242                                 printf("gots one with colspan %d\n", con->colspan);
 243                                 while (con->colspan > 1 &&
 244                                        workspace->table[cols + (con->colspan - 1)][rows]->currently_focused != NULL)
 245                                         con->colspan--;
 246                                 printf("fixed it to %d\n", con->colspan);
 247                         }
 248                         if (con->rowspan > 1) {
 249                                 printf("gots one with rowspan %d\n", con->rowspan);
 250                                 while (con->rowspan > 1 &&
 251                                        workspace->table[cols][rows + (con->rowspan - 1)]->currently_focused != NULL)
 252                                         con->rowspan--;
 253                                 printf("fixed it to %d\n", con->rowspan);
 254                         }
 255                 }
 256 }