git.sur5r.net Git - i3/i3/blob - src/layout.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  * layout.c: Functions handling layout/drawing of window decorations
  11  *
  12  */
  13 #include <stdio.h>
  14 #include <string.h>
  15 #include <stdlib.h>
  16 #include <xcb/xcb.h>
  17 #include <assert.h>
  18 #include <math.h>
  19
  20 #include "config.h"
  21 #include "i3.h"
  22 #include "xcb.h"
  23 #include "table.h"
  24 #include "util.h"
  25 #include "xinerama.h"
  26 #include "layout.h"
  27 #include "client.h"
  28 #include "floating.h"
  29 #include "handlers.h"
  30
  31 /*
  32  * Updates *destination with new_value and returns true if it was changed or false
  33  * if it was the same
  34  *
  35  */
  36 static bool update_if_necessary(uint32_t *destination, const uint32_t new_value) {
  37         uint32_t old_value = *destination;
  38
  39         return ((*destination = new_value) != old_value);
  40 }
  41
  42 /*
  43  * Gets the unoccupied space (= space which is available for windows which were resized by the user)
  44  * for the given row. This is necessary to render both, customly resized windows and never touched
  45  * windows correctly, meaning that the aspect ratio will be maintained when opening new windows.
  46  *
  47  */
  48 int get_unoccupied_x(Workspace *workspace) {
  49         int unoccupied = workspace->rect.width;
  50         float default_factor = ((float)workspace->rect.width / workspace->cols) / workspace->rect.width;
  51
  52         LOG("get_unoccupied_x(), starting with %d, default_factor = %f\n", unoccupied, default_factor);
  53
  54         for (int cols = 0; cols < workspace->cols; cols++) {
  55                 LOG("width_factor[%d] = %f\n", cols, workspace->width_factor[cols]);
  56
  57                 if (workspace->width_factor[cols] == 0)
  58                         unoccupied -= workspace->rect.width * default_factor;
  59         }
  60
  61         LOG("unoccupied space: %d\n", unoccupied);
  62         return unoccupied;
  63 }
  64
  65 /* See get_unoccupied_x() */
  66 int get_unoccupied_y(Workspace *workspace, int col) {
  67         int unoccupied = workspace->rect.height;
  68         float default_factor = ((float)workspace->rect.height / workspace->rows) / workspace->rect.height;
  69
  70         LOG("get_unoccupied_y(), starting with %d, default_factor = %f\n", unoccupied, default_factor);
  71
  72         for (int rows = 0; rows < workspace->rows; rows++) {
  73                 LOG("height_factor[%d] = %f\n", rows, workspace->height_factor[rows]);
  74                 if (workspace->height_factor[rows] == 0)
  75                         unoccupied -= workspace->rect.height * default_factor;
  76         }
  77
  78         LOG("unoccupied space: %d\n", unoccupied);
  79         return unoccupied;
  80 }
  81
  82 /*
  83  * Redecorates the given client correctly by checking if it’s in a stacking container and
  84  * re-rendering the stack window or just calling decorate_window if it’s not in a stacking
  85  * container.
  86  *
  87  */
  88 void redecorate_window(xcb_connection_t *conn, Client *client) {
  89         if (client->container != NULL && client->container->mode == MODE_STACK) {
  90                 render_container(conn, client->container);
  91                 /* We clear the frame to generate exposure events, because the color used
  92                    in drawing may be different */
  93                 xcb_clear_area(conn, true, client->frame, 0, 0, client->rect.width, client->rect.height);
  94         } else decorate_window(conn, client, client->frame, client->titlegc, 0);
  95         xcb_flush(conn);
  96 }
  97
  98 /*
  99  * (Re-)draws window decorations for a given Client onto the given drawable/graphic context.
 100  * When in stacking mode, the window decorations are drawn onto an own window.
 101  *
 102  */
 103 void decorate_window(xcb_connection_t *conn, Client *client, xcb_drawable_t drawable, xcb_gcontext_t gc, int offset) {
 104         i3Font *font = load_font(conn, config.font);
 105         int decoration_height = font->height + 2 + 2;
 106         struct Colortriple *color;
 107         Client *last_focused;
 108
 109         /* Clients without a container (docks) won’t get decorated */
 110         if (client->dock)
 111                 return;
 112
 113         last_focused = SLIST_FIRST(&(client->workspace->focus_stack));
 114         if (client_is_floating(client)) {
 115                 if (last_focused == client)
 116                         color = &(config.client.focused);
 117                 else color = &(config.client.unfocused);
 118         } else {
 119                 if (client->container->currently_focused == client) {
 120                         /* Distinguish if the window is currently focused… */
 121                         if (last_focused == client && c_ws == client->workspace)
 122                                 color = &(config.client.focused);
 123                         /* …or if it is the focused window in a not focused container */
 124                         else color = &(config.client.focused_inactive);
 125                 } else color = &(config.client.unfocused);
 126         }
 127
 128         /* Our plan is the following:
 129            - Draw a rect around the whole client in color->background
 130            - Draw two lines in a lighter color
 131            - Draw the window’s title
 132          */
 133
 134         /* Draw a rectangle in background color around the window */
 135         xcb_change_gc_single(conn, gc, XCB_GC_FOREGROUND, color->background);
 136
 137         /* In stacking mode, we only render the rect for this specific decoration */
 138         if (client->container != NULL && client->container->mode == MODE_STACK) {
 139                 /* We need to use the container’s width because it is the more recent value - when
 140                    in stacking mode, clients get reconfigured only on demand (the not active client
 141                    is not reconfigured), so the client’s rect.width would be wrong */
 142                 xcb_rectangle_t rect = {0, offset, client->container->width, offset + decoration_height };
 143                 xcb_poly_fill_rectangle(conn, drawable, gc, 1, &rect);
 144         } else {
 145                 xcb_rectangle_t rect = {0, 0, client->rect.width, client->rect.height};
 146                 xcb_poly_fill_rectangle(conn, drawable, gc, 1, &rect);
 147
 148                 /* Draw the inner background to have a black frame around clients (such as mplayer)
 149                    which cannot be resized exactly in our frames and therefore are centered */
 150                 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
 151                 xcb_rectangle_t crect = {2, decoration_height,
 152                                          client->rect.width - (2 + 2), client->rect.height - 2 - decoration_height};
 153                 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
 154         }
 155
 156         if (client->titlebar_position != TITLEBAR_OFF) {
 157                 /* Draw the lines */
 158                 xcb_draw_line(conn, drawable, gc, color->border, 0, offset, client->rect.width, offset);
 159                 if ((client->container == NULL ||
 160                     client->container->mode != MODE_STACK ||
 161                     CIRCLEQ_NEXT_OR_NULL(&(client->container->clients), client, clients) == NULL))
 162                         xcb_draw_line(conn, drawable, gc, color->border, 2, offset + font->height + 3,
 163                                       client->rect.width - 3, offset + font->height + 3);
 164         }
 165
 166         /* If the client has a title, we draw it */
 167         if (client->name != NULL) {
 168                 /* Draw the font */
 169                 uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT;
 170                 uint32_t values[] = { color->text, color->background, font->id };
 171                 xcb_change_gc(conn, gc, mask, values);
 172
 173                 /* name_len == -1 means this is a legacy application which does not specify _NET_WM_NAME,
 174                    and we don’t handle the old window name (COMPOUND_TEXT) but only _NET_WM_NAME, which
 175                    is UTF-8 */
 176                 if (client->name_len == -1)
 177                         xcb_image_text_8(conn, strlen(client->name), drawable, gc, 3 /* X */,
 178                                          offset + font->height /* Y = baseline of font */, client->name);
 179                 else
 180                         xcb_image_text_16(conn, client->name_len, drawable, gc, 3 /* X */,
 181                                           offset + font->height /* Y = baseline of font */, (xcb_char2b_t*)client->name);
 182         }
 183 }
 184
 185 /*
 186  * Pushes the client’s x and y coordinates to X11
 187  *
 188  */
 189 void reposition_client(xcb_connection_t *conn, Client *client) {
 190         i3Screen *screen;
 191
 192         LOG("frame 0x%08x needs to be pushed to %dx%d\n", client->frame, client->rect.x, client->rect.y);
 193         /* Note: We can use a pointer to client->x like an array of uint32_ts
 194            because it is followed by client->y by definition */
 195         xcb_configure_window(conn, client->frame, XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, &(client->rect.x));
 196
 197         if (!client_is_floating(client))
 198                 return;
 199
 200         /* If the client is floating, we need to check if we moved it to a different workspace */
 201         if (client->workspace->screen == (screen = get_screen_containing(client->rect.x, client->rect.y)))
 202                 return;
 203
 204         if (screen == NULL) {
 205                 LOG("Boundary checking disabled, no screen found for (%d, %d)\n", client->rect.x, client->rect.y);
 206                 return;
 207         }
 208
 209         LOG("Client is on workspace %p with screen %p\n", client->workspace, client->workspace->screen);
 210         LOG("but screen at %d, %d is %p\n", client->rect.x, client->rect.y, screen);
 211         floating_assign_to_workspace(client, &workspaces[screen->current_workspace]);
 212 }
 213
 214 /*
 215  * Pushes the client’s width/height to X11 and resizes the child window. This
 216  * function also updates the client’s position, so if you work on tiling clients
 217  * only, you can use this function instead of separate calls to reposition_client
 218  * and resize_client to reduce flickering.
 219  *
 220  */
 221 void resize_client(xcb_connection_t *conn, Client *client) {
 222         i3Font *font = load_font(conn, config.font);
 223
 224         LOG("frame 0x%08x needs to be pushed to %dx%d\n", client->frame, client->rect.x, client->rect.y);
 225         LOG("resizing client 0x%08x to %d x %d\n", client->frame, client->rect.width, client->rect.height);
 226         xcb_configure_window(conn, client->frame,
 227                         XCB_CONFIG_WINDOW_X |
 228                         XCB_CONFIG_WINDOW_Y |
 229                         XCB_CONFIG_WINDOW_WIDTH |
 230                         XCB_CONFIG_WINDOW_HEIGHT,
 231                         &(client->rect.x));
 232
 233         /* Adjust the position of the child inside its frame.
 234          * The coordinates of the child are relative to its frame, we
 235          * add a border of 2 pixel to each value */
 236         uint32_t mask = XCB_CONFIG_WINDOW_X |
 237                         XCB_CONFIG_WINDOW_Y |
 238                         XCB_CONFIG_WINDOW_WIDTH |
 239                         XCB_CONFIG_WINDOW_HEIGHT;
 240         Rect *rect = &(client->child_rect);
 241         switch ((client->container != NULL ? client->container->mode : MODE_DEFAULT)) {
 242                 case MODE_STACK:
 243                         rect->x = 2;
 244                         rect->y = 0;
 245                         rect->width = client->rect.width - (2 + 2);
 246                         rect->height = client->rect.height - 2;
 247                         break;
 248                 default:
 249                         if (client->titlebar_position == TITLEBAR_OFF && client->borderless) {
 250                                 rect->x = 0;
 251                                 rect->y = 0;
 252                                 rect->width = client->rect.width;
 253                                 rect->height = client->rect.height;
 254                         } else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) {
 255                                 rect->x = 1;
 256                                 rect->y = 1;
 257                                 rect->width = client->rect.width - 1 - 1;
 258                                 rect->height = client->rect.height - 1 - 1;
 259                         } else {
 260                                 rect->x = 2;
 261                                 rect->y = font->height + 2 + 2;
 262                                 rect->width = client->rect.width - (2 + 2);
 263                                 rect->height = client->rect.height - ((font->height + 2 + 2) + 2);
 264                         }
 265                         break;
 266         }
 267
 268         /* Obey the ratio, if any */
 269         if (client->proportional_height != 0 &&
 270             client->proportional_width != 0) {
 271                 LOG("proportional height = %d, width = %d\n", client->proportional_height, client->proportional_width);
 272                 double new_height = rect->height + 1;
 273                 int new_width = rect->width;
 274
 275                 while (new_height > rect->height) {
 276                         new_height = ((double)client->proportional_height / client->proportional_width) * new_width;
 277
 278                         if (new_height > rect->height)
 279                                 new_width--;
 280                 }
 281                 /* Center the window */
 282                 rect->y += ceil(rect->height / 2) - floor(new_height / 2);
 283                 rect->x += ceil(rect->width / 2) - floor(new_width / 2);
 284
 285                 rect->height = new_height;
 286                 rect->width = new_width;
 287                 LOG("new_height = %f, new_width = %d\n", new_height, new_width);
 288         }
 289
 290         if (client->height_increment > 1) {
 291                 int old_height = rect->height;
 292                 rect->height -= (rect->height - client->base_height) % client->height_increment;
 293                 LOG("Lost %d pixel due to client's height_increment (%d px)\n",
 294                     old_height - rect->height, client->height_increment);
 295         }
 296
 297         if (client->width_increment > 1) {
 298                 int old_width = rect->width;
 299                 rect->width -= (rect->width - client->base_width) % client->width_increment;
 300                 LOG("Lost %d pixel due to client's width_increment (%d px)\n",
 301                     old_width - rect->width, client->width_increment);
 302         }
 303
 304         LOG("child will be at %dx%d with size %dx%d\n", rect->x, rect->y, rect->width, rect->height);
 305
 306         xcb_configure_window(conn, client->child, mask, &(rect->x));
 307
 308         /* After configuring a child window we need to fake a configure_notify_event (see ICCCM 4.2.3).
 309          * This is necessary to inform the client of its position relative to the root window,
 310          * not relative to its frame (as done in the configure_notify_event by the x server). */
 311         fake_absolute_configure_notify(conn, client);
 312
 313         /* Force redrawing after resizing the window because any now lost
 314          * pixels could contain old garbage. */
 315         xcb_expose_event_t generated;
 316         generated.window = client->frame;
 317         generated.count = 0;
 318         handle_expose_event(NULL, conn, &generated);
 319 }
 320
 321 /*
 322  * Renders the given container. Is called by render_layout() or individually (for example
 323  * when focus changes in a stacking container)
 324  *
 325  */
 326 void render_container(xcb_connection_t *conn, Container *container) {
 327         Client *client;
 328         int num_clients = 0, current_client = 0;
 329
 330         CIRCLEQ_FOREACH(client, &(container->clients), clients)
 331                 num_clients++;
 332
 333         if (container->mode == MODE_DEFAULT) {
 334                 CIRCLEQ_FOREACH(client, &(container->clients), clients) {
 335                         /* If the client is in fullscreen mode, it does not get reconfigured */
 336                         if (container->workspace->fullscreen_client == client) {
 337                                 current_client++;
 338                                 continue;
 339                         }
 340
 341                         /* Check if we changed client->x or client->y by updating it.
 342                          * Note the bitwise OR instead of logical OR to force evaluation of both statements */
 343                         if (client->force_reconfigure |
 344                             update_if_necessary(&(client->rect.x), container->x) |
 345                             update_if_necessary(&(client->rect.y), container->y +
 346                                         (container->height / num_clients) * current_client) |
 347                             update_if_necessary(&(client->rect.width), container->width) |
 348                             update_if_necessary(&(client->rect.height), container->height / num_clients))
 349                                 resize_client(conn, client);
 350
 351                         /* TODO: vertical default layout */
 352
 353                         client->force_reconfigure = false;
 354
 355                         current_client++;
 356                 }
 357         } else {
 358                 i3Font *font = load_font(conn, config.font);
 359                 int decoration_height = (font->height + 2 + 2);
 360                 struct Stack_Window *stack_win = &(container->stack_win);
 361
 362                 /* Check if we need to remap our stack title window, it gets unmapped when the container
 363                    is empty in src/handlers.c:unmap_notify() */
 364                 if (stack_win->rect.height == 0 && num_clients > 0)
 365                         xcb_map_window(conn, stack_win->window);
 366
 367                 /* Check if we need to reconfigure our stack title window */
 368                 if (update_if_necessary(&(stack_win->rect.x), container->x) |
 369                     update_if_necessary(&(stack_win->rect.y), container->y) |
 370                     update_if_necessary(&(stack_win->rect.width), container->width) |
 371                     update_if_necessary(&(stack_win->rect.height), decoration_height * num_clients)) {
 372
 373                         /* Configuration can happen in two slightly different ways:
 374
 375                            If there is no client in fullscreen mode, 5 parameters are passed
 376                            (x, y, width, height, stack mode is set to above which means top-most position).
 377
 378                            If there is a fullscreen client, the fourth parameter is set to to the
 379                            fullscreen window as sibling and the stack mode is set to below, which means
 380                            that the stack_window will be placed just below the sibling, that is, under
 381                            the fullscreen window.
 382                          */
 383                         uint32_t values[] = { stack_win->rect.x, stack_win->rect.y,
 384                                               stack_win->rect.width, stack_win->rect.height,
 385                                               XCB_STACK_MODE_ABOVE, XCB_STACK_MODE_BELOW };
 386                         uint32_t mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y |
 387                                         XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT |
 388                                         XCB_CONFIG_WINDOW_STACK_MODE;
 389
 390                         /* Raise the stack window, but keep it below the first floating client
 391                          * and below the fullscreen client (if any) */
 392                         Client *first_floating = TAILQ_FIRST(&(container->workspace->floating_clients));
 393                         if (first_floating != TAILQ_END(&(container->workspace->floating_clients))) {
 394                                 mask |= XCB_CONFIG_WINDOW_SIBLING;
 395                                 values[4] = first_floating->frame;
 396                         } else if (container->workspace->fullscreen_client != NULL) {
 397                                 mask |= XCB_CONFIG_WINDOW_SIBLING;
 398                                 values[4] = container->workspace->fullscreen_client->frame;
 399                         }
 400
 401                         xcb_configure_window(conn, stack_win->window, mask, values);
 402                 }
 403
 404                 /* Prepare the pixmap for usage */
 405                 cached_pixmap_prepare(conn, &(stack_win->pixmap));
 406
 407                 /* Render the decorations of all clients */
 408                 CIRCLEQ_FOREACH(client, &(container->clients), clients) {
 409                         /* If the client is in fullscreen mode, it does not get reconfigured */
 410                         if (container->workspace->fullscreen_client == client) {
 411                                 current_client++;
 412                                 continue;
 413                         }
 414
 415                         /* Check if we changed client->x or client->y by updating it.
 416                          * Note the bitwise OR instead of logical OR to force evaluation of both statements */
 417                         if (client->force_reconfigure |
 418                             update_if_necessary(&(client->rect.x), container->x) |
 419                             update_if_necessary(&(client->rect.y), container->y + (decoration_height * num_clients)) |
 420                             update_if_necessary(&(client->rect.width), container->width) |
 421                             update_if_necessary(&(client->rect.height), container->height - (decoration_height * num_clients)))
 422                                 resize_client(conn, client);
 423
 424                         client->force_reconfigure = false;
 425
 426                         decorate_window(conn, client, stack_win->pixmap.id, stack_win->pixmap.gc,
 427                                         current_client++ * decoration_height);
 428                 }
 429
 430                 xcb_copy_area(conn, stack_win->pixmap.id, stack_win->window, stack_win->pixmap.gc,
 431                               0, 0, 0, 0, stack_win->rect.width, stack_win->rect.height);
 432         }
 433 }
 434
 435 static void render_bars(xcb_connection_t *conn, Workspace *r_ws, int width, int *height) {
 436         Client *client;
 437         SLIST_FOREACH(client, &(r_ws->screen->dock_clients), dock_clients) {
 438                 LOG("client is at %d, should be at %d\n", client->rect.y, *height);
 439                 if (client->force_reconfigure |
 440                     update_if_necessary(&(client->rect.x), r_ws->rect.x) |
 441                     update_if_necessary(&(client->rect.y), *height))
 442                         reposition_client(conn, client);
 443
 444                 if (client->force_reconfigure |
 445                     update_if_necessary(&(client->rect.width), width) |
 446                     update_if_necessary(&(client->rect.height), client->desired_height))
 447                         resize_client(conn, client);
 448
 449                 client->force_reconfigure = false;
 450                 LOG("desired_height = %d\n", client->desired_height);
 451                 *height += client->desired_height;
 452         }
 453 }
 454
 455 static void render_internal_bar(xcb_connection_t *conn, Workspace *r_ws, int width, int height) {
 456         i3Font *font = load_font(conn, config.font);
 457         i3Screen *screen = r_ws->screen;
 458         enum { SET_NORMAL = 0, SET_FOCUSED = 1 };
 459
 460         /* Fill the whole bar in black */
 461         xcb_change_gc_single(conn, screen->bargc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
 462         xcb_rectangle_t rect = {0, 0, width, height};
 463         xcb_poly_fill_rectangle(conn, screen->bar, screen->bargc, 1, &rect);
 464
 465         /* Set font */
 466         xcb_change_gc_single(conn, screen->bargc, XCB_GC_FONT, font->id);
 467
 468         int drawn = 0;
 469         for (int c = 0; c < 10; c++) {
 470                 if (workspaces[c].screen != screen)
 471                         continue;
 472
 473                 struct Colortriple *color = (screen->current_workspace == c ? &(config.bar.focused) :
 474                                              &(config.bar.unfocused));
 475                 Workspace *ws = &workspaces[c];
 476
 477                 /* Draw the outer rect */
 478                 xcb_draw_rect(conn, screen->bar, screen->bargc, color->border,
 479                               drawn,              /* x */
 480                               1,                  /* y */
 481                               ws->text_width + 5 + 5, /* width = text width + 5 px left + 5px right */
 482                               height - 2          /* height = max. height - 1 px upper and 1 px bottom border */);
 483
 484                 /* Draw the background of this rect */
 485                 xcb_draw_rect(conn, screen->bar, screen->bargc, color->background,
 486                               drawn + 1,
 487                               2,
 488                               ws->text_width + 4 + 4,
 489                               height - 4);
 490
 491                 xcb_change_gc_single(conn, screen->bargc, XCB_GC_FOREGROUND, color->text);
 492                 xcb_change_gc_single(conn, screen->bargc, XCB_GC_BACKGROUND, color->background);
 493                 xcb_image_text_16(conn, ws->name_len, screen->bar, screen->bargc, drawn + 5 /* X */,
 494                                   font->height + 1 /* Y = baseline of font */,
 495                                   (xcb_char2b_t*)ws->name);
 496                 drawn += ws->text_width + 12;
 497         }
 498 }
 499
 500 /*
 501  * Modifies the event mask of all clients on the given workspace to either ignore or to handle
 502  * enter notifies. It is handy to ignore notifies because they will be sent when a window is mapped
 503  * under the cursor, thus when the user didn’t enter the window actively at all.
 504  *
 505  */
 506 void ignore_enter_notify_forall(xcb_connection_t *conn, Workspace *workspace, bool ignore_enter_notify) {
 507         Client *client;
 508         uint32_t values[1];
 509
 510         FOR_TABLE(workspace)
 511                 CIRCLEQ_FOREACH(client, &(workspace->table[cols][rows]->clients), clients) {
 512                         /* Change event mask for the decorations */
 513                         values[0] = FRAME_EVENT_MASK;
 514                         if (ignore_enter_notify)
 515                                 values[0] &= ~(XCB_EVENT_MASK_ENTER_WINDOW);
 516                         xcb_change_window_attributes(conn, client->frame, XCB_CW_EVENT_MASK, values);
 517
 518                         /* Change event mask for the child itself */
 519                         values[0] = CHILD_EVENT_MASK;
 520                         if (ignore_enter_notify)
 521                                 values[0] &= ~(XCB_EVENT_MASK_ENTER_WINDOW);
 522                         xcb_change_window_attributes(conn, client->child, XCB_CW_EVENT_MASK, values);
 523                 }
 524 }
 525
 526 /*
 527  * Renders the given workspace on the given screen
 528  *
 529  */
 530 void render_workspace(xcb_connection_t *conn, i3Screen *screen, Workspace *r_ws) {
 531         i3Font *font = load_font(conn, config.font);
 532         int width = r_ws->rect.width;
 533         int height = r_ws->rect.height;
 534
 535         /* Reserve space for dock clients */
 536         Client *client;
 537         SLIST_FOREACH(client, &(screen->dock_clients), dock_clients)
 538                 height -= client->desired_height;
 539
 540         /* Space for the internal bar */
 541         height -= (font->height + 6);
 542
 543         int xoffset[r_ws->rows];
 544         int yoffset[r_ws->cols];
 545         /* Initialize offsets */
 546         for (int cols = 0; cols < r_ws->cols; cols++)
 547                 yoffset[cols] = r_ws->rect.y;
 548         for (int rows = 0; rows < r_ws->rows; rows++)
 549                 xoffset[rows] = r_ws->rect.x;
 550
 551         ignore_enter_notify_forall(conn, r_ws, true);
 552
 553         /* Go through the whole table and render what’s necessary */
 554         FOR_TABLE(r_ws) {
 555                 Container *container = r_ws->table[cols][rows];
 556                 int single_width = -1, single_height;
 557                 /* Update position of the container */
 558                 container->row = rows;
 559                 container->col = cols;
 560                 container->x = xoffset[rows];
 561                 container->y = yoffset[cols];
 562                 container->width = 0;
 563
 564                 for (int c = 0; c < container->colspan; c++) {
 565                         if (r_ws->width_factor[cols+c] == 0)
 566                                 container->width += (width / r_ws->cols);
 567                         else container->width += get_unoccupied_x(r_ws) * r_ws->width_factor[cols+c];
 568
 569                         if (single_width == -1)
 570                                 single_width = container->width;
 571                 }
 572
 573                 //if (container->height_factor == 0)
 574                         container->height = (height / r_ws->rows);
 575                 //else container->height = get_unoccupied_y(r_ws, cols) * container->height_factor;
 576                 single_height = container->height;
 577                 container->height *= container->rowspan;
 578
 579                 /* Render the container if it is not empty */
 580                 render_container(conn, container);
 581
 582                 xoffset[rows] += single_width;
 583                 yoffset[cols] += single_height;
 584         }
 585
 586         ignore_enter_notify_forall(conn, r_ws, false);
 587
 588         render_bars(conn, r_ws, width, &height);
 589         render_internal_bar(conn, r_ws, width, font->height + 6);
 590 }
 591
 592 /*
 593  * Renders the whole layout, that is: Go through each screen, each workspace, each container
 594  * and render each client. This also renders the bars.
 595  *
 596  * If you don’t need to render *everything*, you should call render_container on the container
 597  * you want to refresh.
 598  *
 599  */
 600 void render_layout(xcb_connection_t *conn) {
 601         i3Screen *screen;
 602
 603         TAILQ_FOREACH(screen, virtual_screens, screens)
 604                 render_workspace(conn, screen, &(workspaces[screen->current_workspace]));
 605
 606         xcb_flush(conn);
 607 }