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