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 &&
  89             (client->container->mode == MODE_STACK ||
  90              client->container->mode == MODE_TABBED)) {
  91                 render_container(conn, client->container);
  92                 /* We clear the frame to generate exposure events, because the color used
  93                    in drawing may be different */
  94                 xcb_clear_area(conn, true, client->frame, 0, 0, client->rect.width, client->rect.height);
  95         } else decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
  96         xcb_flush(conn);
  97 }
  98
  99 /*
 100  * (Re-)draws window decorations for a given Client onto the given drawable/graphic context.
 101  * When in stacking mode, the window decorations are drawn onto an own window.
 102  *
 103  */
 104 void decorate_window(xcb_connection_t *conn, Client *client, xcb_drawable_t drawable,
 105                      xcb_gcontext_t gc, int offset_x, int offset_y) {
 106         i3Font *font = load_font(conn, config.font);
 107         int decoration_height = font->height + 2 + 2;
 108         struct Colortriple *color;
 109         Client *last_focused;
 110
 111         /* Clients without a container (docks) won’t get decorated */
 112         if (client->dock)
 113                 return;
 114
 115         last_focused = SLIST_FIRST(&(client->workspace->focus_stack));
 116         if (client_is_floating(client)) {
 117                 if (last_focused == client)
 118                         color = &(config.client.focused);
 119                 else color = &(config.client.unfocused);
 120         } else {
 121                 if (client->container->currently_focused == client) {
 122                         /* Distinguish if the window is currently focused… */
 123                         if (last_focused == client && c_ws == client->workspace)
 124                                 color = &(config.client.focused);
 125                         /* …or if it is the focused window in a not focused container */
 126                         else color = &(config.client.focused_inactive);
 127                 } else color = &(config.client.unfocused);
 128         }
 129
 130         /* Our plan is the following:
 131            - Draw a rect around the whole client in color->background
 132            - Draw two lines in a lighter color
 133            - Draw the window’s title
 134          */
 135
 136         /* Draw a rectangle in background color around the window */
 137         xcb_change_gc_single(conn, gc, XCB_GC_FOREGROUND, color->background);
 138
 139         /* In stacking mode, we only render the rect for this specific decoration */
 140         if (client->container != NULL && (client->container->mode == MODE_STACK || client->container->mode == MODE_TABBED)) {
 141                 /* We need to use the container’s width because it is the more recent value - when
 142                    in stacking mode, clients get reconfigured only on demand (the not active client
 143                    is not reconfigured), so the client’s rect.width would be wrong */
 144                 xcb_rectangle_t rect = {offset_x, offset_y,
 145                                         offset_x + client->container->width,
 146                                         offset_y + decoration_height };
 147                 xcb_poly_fill_rectangle(conn, drawable, gc, 1, &rect);
 148         } else {
 149                 xcb_rectangle_t rect = {0, 0, client->rect.width, client->rect.height};
 150                 xcb_poly_fill_rectangle(conn, drawable, gc, 1, &rect);
 151
 152                 /* Draw the inner background to have a black frame around clients (such as mplayer)
 153                    which cannot be resized exactly in our frames and therefore are centered */
 154                 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
 155                 xcb_rectangle_t crect = {2, decoration_height,
 156                                          client->rect.width - (2 + 2), client->rect.height - 2 - decoration_height};
 157                 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
 158         }
 159
 160         if (client->titlebar_position != TITLEBAR_OFF) {
 161                 /* Draw the lines */
 162                 xcb_draw_line(conn, drawable, gc, color->border, offset_x, offset_y, offset_x + client->rect.width, offset_y);
 163                 if ((client->container == NULL ||
 164                     (client->container->mode != MODE_STACK &&
 165                      client->container->mode != MODE_TABBED) ||
 166                     CIRCLEQ_NEXT_OR_NULL(&(client->container->clients), client, clients) == NULL))
 167                         xcb_draw_line(conn, drawable, gc, color->border,
 168                                       offset_x + 2, /* x */
 169                                       offset_y + font->height + 3, /* y */
 170                                       offset_x + client->rect.width - 3, /* to_x */
 171                                       offset_y + font->height + 3 /* to_y */);
 172         }
 173
 174         /* If the client has a title, we draw it */
 175         if (client->name != NULL) {
 176                 /* Draw the font */
 177                 uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT;
 178                 uint32_t values[] = { color->text, color->background, font->id };
 179                 xcb_change_gc(conn, gc, mask, values);
 180
 181                 /* name_len == -1 means this is a legacy application which does not specify _NET_WM_NAME,
 182                    and we don’t handle the old window name (COMPOUND_TEXT) but only _NET_WM_NAME, which
 183                    is UTF-8 */
 184                 if (client->name_len == -1)
 185                         xcb_image_text_8(conn, strlen(client->name), drawable, gc, offset_x + 3 /* X */,
 186                                          offset_y + font->height /* Y = baseline of font */, client->name);
 187                 else
 188                         xcb_image_text_16(conn, client->name_len, drawable, gc, offset_x + 3 /* X */,
 189                                           offset_y + font->height /* Y = baseline of font */, (xcb_char2b_t*)client->name);
 190         }
 191 }
 192
 193 /*
 194  * Pushes the client’s x and y coordinates to X11
 195  *
 196  */
 197 void reposition_client(xcb_connection_t *conn, Client *client) {
 198         i3Screen *screen;
 199
 200         LOG("frame 0x%08x needs to be pushed to %dx%d\n", client->frame, client->rect.x, client->rect.y);
 201         /* Note: We can use a pointer to client->x like an array of uint32_ts
 202            because it is followed by client->y by definition */
 203         xcb_configure_window(conn, client->frame, XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, &(client->rect.x));
 204
 205         if (!client_is_floating(client))
 206                 return;
 207
 208         /* If the client is floating, we need to check if we moved it to a different workspace */
 209         if (client->workspace->screen == (screen = get_screen_containing(client->rect.x, client->rect.y)))
 210                 return;
 211
 212         if (screen == NULL) {
 213                 LOG("Boundary checking disabled, no screen found for (%d, %d)\n", client->rect.x, client->rect.y);
 214                 return;
 215         }
 216
 217         LOG("Client is on workspace %p with screen %p\n", client->workspace, client->workspace->screen);
 218         LOG("but screen at %d, %d is %p\n", client->rect.x, client->rect.y, screen);
 219         floating_assign_to_workspace(client, &workspaces[screen->current_workspace]);
 220 }
 221
 222 /*
 223  * Pushes the client’s width/height to X11 and resizes the child window. This
 224  * function also updates the client’s position, so if you work on tiling clients
 225  * only, you can use this function instead of separate calls to reposition_client
 226  * and resize_client to reduce flickering.
 227  *
 228  */
 229 void resize_client(xcb_connection_t *conn, Client *client) {
 230         i3Font *font = load_font(conn, config.font);
 231
 232         LOG("frame 0x%08x needs to be pushed to %dx%d\n", client->frame, client->rect.x, client->rect.y);
 233         LOG("resizing client 0x%08x to %d x %d\n", client->frame, client->rect.width, client->rect.height);
 234         xcb_configure_window(conn, client->frame,
 235                         XCB_CONFIG_WINDOW_X |
 236                         XCB_CONFIG_WINDOW_Y |
 237                         XCB_CONFIG_WINDOW_WIDTH |
 238                         XCB_CONFIG_WINDOW_HEIGHT,
 239                         &(client->rect.x));
 240
 241         /* Adjust the position of the child inside its frame.
 242          * The coordinates of the child are relative to its frame, we
 243          * add a border of 2 pixel to each value */
 244         uint32_t mask = XCB_CONFIG_WINDOW_X |
 245                         XCB_CONFIG_WINDOW_Y |
 246                         XCB_CONFIG_WINDOW_WIDTH |
 247                         XCB_CONFIG_WINDOW_HEIGHT;
 248         Rect *rect = &(client->child_rect);
 249         switch ((client->container != NULL ? client->container->mode : MODE_DEFAULT)) {
 250                 case MODE_STACK:
 251                 case MODE_TABBED:
 252                         rect->x = 2;
 253                         rect->y = 0;
 254                         rect->width = client->rect.width - (2 + 2);
 255                         rect->height = client->rect.height - 2;
 256                         break;
 257                 default:
 258                         if (client->titlebar_position == TITLEBAR_OFF && client->borderless) {
 259                                 rect->x = 0;
 260                                 rect->y = 0;
 261                                 rect->width = client->rect.width;
 262                                 rect->height = client->rect.height;
 263                         } else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) {
 264                                 rect->x = 1;
 265                                 rect->y = 1;
 266                                 rect->width = client->rect.width - 1 - 1;
 267                                 rect->height = client->rect.height - 1 - 1;
 268                         } else {
 269                                 rect->x = 2;
 270                                 rect->y = font->height + 2 + 2;
 271                                 rect->width = client->rect.width - (2 + 2);
 272                                 rect->height = client->rect.height - ((font->height + 2 + 2) + 2);
 273                         }
 274                         break;
 275         }
 276
 277         /* Obey the ratio, if any */
 278         if (client->proportional_height != 0 &&
 279             client->proportional_width != 0) {
 280                 LOG("proportional height = %d, width = %d\n", client->proportional_height, client->proportional_width);
 281                 double new_height = rect->height + 1;
 282                 int new_width = rect->width;
 283
 284                 while (new_height > rect->height) {
 285                         new_height = ((double)client->proportional_height / client->proportional_width) * new_width;
 286
 287                         if (new_height > rect->height)
 288                                 new_width--;
 289                 }
 290                 /* Center the window */
 291                 rect->y += ceil(rect->height / 2) - floor(new_height / 2);
 292                 rect->x += ceil(rect->width / 2) - floor(new_width / 2);
 293
 294                 rect->height = new_height;
 295                 rect->width = new_width;
 296                 LOG("new_height = %f, new_width = %d\n", new_height, new_width);
 297         }
 298
 299         if (client->height_increment > 1) {
 300                 int old_height = rect->height;
 301                 rect->height = ((int)(rect->height / client->height_increment) * client->height_increment) + 1;
 302                 LOG("Lost %d pixel due to client's height_increment (%d px)\n",
 303                     old_height - rect->height, client->height_increment);
 304         }
 305
 306         if (client->width_increment > 1) {
 307                 int old_width = rect->width;
 308                 rect->width = ((int)(rect->width / client->width_increment) * client->width_increment) + 1;
 309                 LOG("Lost %d pixel due to client's width_increment (%d px)\n",
 310                     old_width - rect->width, client->width_increment);
 311         }
 312
 313         LOG("child will be at %dx%d with size %dx%d\n", rect->x, rect->y, rect->width, rect->height);
 314
 315         xcb_configure_window(conn, client->child, mask, &(rect->x));
 316
 317         /* After configuring a child window we need to fake a configure_notify_event (see ICCCM 4.2.3).
 318          * This is necessary to inform the client of its position relative to the root window,
 319          * not relative to its frame (as done in the configure_notify_event by the x server). */
 320         fake_absolute_configure_notify(conn, client);
 321 }
 322
 323 /*
 324  * Renders the given container. Is called by render_layout() or individually (for example
 325  * when focus changes in a stacking container)
 326  *
 327  */
 328 void render_container(xcb_connection_t *conn, Container *container) {
 329         Client *client;
 330         int num_clients = 0, current_client = 0;
 331
 332         CIRCLEQ_FOREACH(client, &(container->clients), clients)
 333                 num_clients++;
 334
 335         if (container->mode == MODE_DEFAULT) {
 336                 CIRCLEQ_FOREACH(client, &(container->clients), clients) {
 337                         /* If the client is in fullscreen mode, it does not get reconfigured */
 338                         if (container->workspace->fullscreen_client == client) {
 339                                 current_client++;
 340                                 continue;
 341                         }
 342
 343                         /* Check if we changed client->x or client->y by updating it.
 344                          * Note the bitwise OR instead of logical OR to force evaluation of both statements */
 345                         if (client->force_reconfigure |
 346                             update_if_necessary(&(client->rect.x), container->x) |
 347                             update_if_necessary(&(client->rect.y), container->y +
 348                                         (container->height / num_clients) * current_client) |
 349                             update_if_necessary(&(client->rect.width), container->width) |
 350                             update_if_necessary(&(client->rect.height), container->height / num_clients))
 351                                 resize_client(conn, client);
 352
 353                         /* TODO: vertical default layout */
 354
 355                         client->force_reconfigure = false;
 356
 357                         current_client++;
 358                 }
 359         } else {
 360                 i3Font *font = load_font(conn, config.font);
 361                 int decoration_height = (font->height + 2 + 2);
 362                 struct Stack_Window *stack_win = &(container->stack_win);
 363                 /* The size for each tab (width), necessary as a separate variable
 364                  * because num_clients gets fixed to 1 in tabbed mode. */
 365                 int size_each = (num_clients == 0 ? container->width : container->width / num_clients);
 366
 367                 /* Check if we need to remap our stack title window, it gets unmapped when the container
 368                    is empty in src/handlers.c:unmap_notify() */
 369                 if (stack_win->rect.height == 0 && num_clients > 0) {
 370                         LOG("remapping stack win\n");
 371                         xcb_map_window(conn, stack_win->window);
 372                 } else LOG("not remapping stackwin, height = %d, num_clients = %d\n",
 373                                 stack_win->rect.height, num_clients);
 374
 375                 if (container->mode == MODE_TABBED) {
 376                         /* By setting num_clients to 1 we force that the stack window will be only one line
 377                          * high. The rest of the code is useful in both cases. */
 378                         LOG("tabbed mode, setting num_clients = 1\n");
 379                         if (num_clients > 1)
 380                                 num_clients = 1;
 381                 }
 382
 383                 /* Check if we need to reconfigure our stack title window */
 384                 if (update_if_necessary(&(stack_win->rect.x), container->x) |
 385                     update_if_necessary(&(stack_win->rect.y), container->y) |
 386                     update_if_necessary(&(stack_win->rect.width), container->width) |
 387                     update_if_necessary(&(stack_win->rect.height), decoration_height * num_clients)) {
 388
 389                         /* Configuration can happen in two slightly different ways:
 390
 391                            If there is no client in fullscreen mode, 5 parameters are passed
 392                            (x, y, width, height, stack mode is set to above which means top-most position).
 393
 394                            If there is a fullscreen client, the fourth parameter is set to to the
 395                            fullscreen window as sibling and the stack mode is set to below, which means
 396                            that the stack_window will be placed just below the sibling, that is, under
 397                            the fullscreen window.
 398                          */
 399                         uint32_t values[] = { stack_win->rect.x, stack_win->rect.y,
 400                                               stack_win->rect.width, stack_win->rect.height,
 401                                               XCB_STACK_MODE_ABOVE, XCB_STACK_MODE_BELOW };
 402                         uint32_t mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y |
 403                                         XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT |
 404                                         XCB_CONFIG_WINDOW_STACK_MODE;
 405
 406                         /* Raise the stack window, but keep it below the first floating client
 407                          * and below the fullscreen client (if any) */
 408                         Client *first_floating = TAILQ_FIRST(&(container->workspace->floating_clients));
 409                         if (first_floating != TAILQ_END(&(container->workspace->floating_clients))) {
 410                                 mask |= XCB_CONFIG_WINDOW_SIBLING;
 411                                 values[4] = first_floating->frame;
 412                         } else if (container->workspace->fullscreen_client != NULL) {
 413                                 mask |= XCB_CONFIG_WINDOW_SIBLING;
 414                                 values[4] = container->workspace->fullscreen_client->frame;
 415                         }
 416
 417                         xcb_configure_window(conn, stack_win->window, mask, values);
 418                 }
 419
 420                 /* Prepare the pixmap for usage */
 421                 cached_pixmap_prepare(conn, &(stack_win->pixmap));
 422
 423                 /* Render the decorations of all clients */
 424                 CIRCLEQ_FOREACH(client, &(container->clients), clients) {
 425                         /* If the client is in fullscreen mode, it does not get reconfigured */
 426                         if (container->workspace->fullscreen_client == client) {
 427                                 current_client++;
 428                                 continue;
 429                         }
 430
 431                         /* Check if we changed client->x or client->y by updating it.
 432                          * Note the bitwise OR instead of logical OR to force evaluation of all statements */
 433                         if (client->force_reconfigure |
 434                             update_if_necessary(&(client->rect.x), container->x) |
 435                             update_if_necessary(&(client->rect.y), container->y + (decoration_height * num_clients)) |
 436                             update_if_necessary(&(client->rect.width), container->width) |
 437                             update_if_necessary(&(client->rect.height), container->height - (decoration_height * num_clients)))
 438                                 resize_client(conn, client);
 439
 440                         client->force_reconfigure = false;
 441
 442                         int offset_x = 0;
 443                         int offset_y = 0;
 444                         if (container->mode == MODE_STACK)
 445                                 offset_y = current_client++ * decoration_height;
 446                         else if (container->mode == MODE_TABBED)
 447                                 offset_x = current_client++ * size_each;
 448                         decorate_window(conn, client, stack_win->pixmap.id, stack_win->pixmap.gc,
 449                                         offset_x, offset_y);
 450                 }
 451
 452                 xcb_copy_area(conn, stack_win->pixmap.id, stack_win->window, stack_win->pixmap.gc,
 453                               0, 0, 0, 0, stack_win->rect.width, stack_win->rect.height);
 454         }
 455 }
 456
 457 static void render_bars(xcb_connection_t *conn, Workspace *r_ws, int width, int *height) {
 458         Client *client;
 459         SLIST_FOREACH(client, &(r_ws->screen->dock_clients), dock_clients) {
 460                 LOG("client is at %d, should be at %d\n", client->rect.y, *height);
 461                 if (client->force_reconfigure |
 462                     update_if_necessary(&(client->rect.x), r_ws->rect.x) |
 463                     update_if_necessary(&(client->rect.y), *height))
 464                         reposition_client(conn, client);
 465
 466                 if (client->force_reconfigure |
 467                     update_if_necessary(&(client->rect.width), width) |
 468                     update_if_necessary(&(client->rect.height), client->desired_height))
 469                         resize_client(conn, client);
 470
 471                 client->force_reconfigure = false;
 472                 LOG("desired_height = %d\n", client->desired_height);
 473                 *height += client->desired_height;
 474         }
 475 }
 476
 477 static void render_internal_bar(xcb_connection_t *conn, Workspace *r_ws, int width, int height) {
 478         i3Font *font = load_font(conn, config.font);
 479         i3Screen *screen = r_ws->screen;
 480         enum { SET_NORMAL = 0, SET_FOCUSED = 1 };
 481
 482         /* Fill the whole bar in black */
 483         xcb_change_gc_single(conn, screen->bargc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
 484         xcb_rectangle_t rect = {0, 0, width, height};
 485         xcb_poly_fill_rectangle(conn, screen->bar, screen->bargc, 1, &rect);
 486
 487         /* Set font */
 488         xcb_change_gc_single(conn, screen->bargc, XCB_GC_FONT, font->id);
 489
 490         int drawn = 0;
 491         for (int c = 0; c < 10; c++) {
 492                 if (workspaces[c].screen != screen)
 493                         continue;
 494
 495                 struct Colortriple *color = (screen->current_workspace == c ? &(config.bar.focused) :
 496                                              &(config.bar.unfocused));
 497                 Workspace *ws = &workspaces[c];
 498
 499                 /* Draw the outer rect */
 500                 xcb_draw_rect(conn, screen->bar, screen->bargc, color->border,
 501                               drawn,              /* x */
 502                               1,                  /* y */
 503                               ws->text_width + 5 + 5, /* width = text width + 5 px left + 5px right */
 504                               height - 2          /* height = max. height - 1 px upper and 1 px bottom border */);
 505
 506                 /* Draw the background of this rect */
 507                 xcb_draw_rect(conn, screen->bar, screen->bargc, color->background,
 508                               drawn + 1,
 509                               2,
 510                               ws->text_width + 4 + 4,
 511                               height - 4);
 512
 513                 xcb_change_gc_single(conn, screen->bargc, XCB_GC_FOREGROUND, color->text);
 514                 xcb_change_gc_single(conn, screen->bargc, XCB_GC_BACKGROUND, color->background);
 515                 xcb_image_text_16(conn, ws->name_len, screen->bar, screen->bargc, drawn + 5 /* X */,
 516                                   font->height + 1 /* Y = baseline of font */,
 517                                   (xcb_char2b_t*)ws->name);
 518                 drawn += ws->text_width + 12;
 519         }
 520 }
 521
 522 /*
 523  * Modifies the event mask of all clients on the given workspace to either ignore or to handle
 524  * enter notifies. It is handy to ignore notifies because they will be sent when a window is mapped
 525  * under the cursor, thus when the user didn’t enter the window actively at all.
 526  *
 527  */
 528 void ignore_enter_notify_forall(xcb_connection_t *conn, Workspace *workspace, bool ignore_enter_notify) {
 529         Client *client;
 530         uint32_t values[1];
 531
 532         FOR_TABLE(workspace)
 533                 CIRCLEQ_FOREACH(client, &(workspace->table[cols][rows]->clients), clients) {
 534                         /* Change event mask for the decorations */
 535                         values[0] = FRAME_EVENT_MASK;
 536                         if (ignore_enter_notify)
 537                                 values[0] &= ~(XCB_EVENT_MASK_ENTER_WINDOW);
 538                         xcb_change_window_attributes(conn, client->frame, XCB_CW_EVENT_MASK, values);
 539
 540                         /* Change event mask for the child itself */
 541                         values[0] = CHILD_EVENT_MASK;
 542                         if (ignore_enter_notify)
 543                                 values[0] &= ~(XCB_EVENT_MASK_ENTER_WINDOW);
 544                         xcb_change_window_attributes(conn, client->child, XCB_CW_EVENT_MASK, values);
 545                 }
 546 }
 547
 548 /*
 549  * Renders the given workspace on the given screen
 550  *
 551  */
 552 void render_workspace(xcb_connection_t *conn, i3Screen *screen, Workspace *r_ws) {
 553         i3Font *font = load_font(conn, config.font);
 554         int width = r_ws->rect.width;
 555         int height = r_ws->rect.height;
 556
 557         /* Reserve space for dock clients */
 558         Client *client;
 559         SLIST_FOREACH(client, &(screen->dock_clients), dock_clients)
 560                 height -= client->desired_height;
 561
 562         /* Space for the internal bar */
 563         height -= (font->height + 6);
 564
 565         int xoffset[r_ws->rows];
 566         int yoffset[r_ws->cols];
 567         /* Initialize offsets */
 568         for (int cols = 0; cols < r_ws->cols; cols++)
 569                 yoffset[cols] = r_ws->rect.y;
 570         for (int rows = 0; rows < r_ws->rows; rows++)
 571                 xoffset[rows] = r_ws->rect.x;
 572
 573         ignore_enter_notify_forall(conn, r_ws, true);
 574
 575         /* Go through the whole table and render what’s necessary */
 576         FOR_TABLE(r_ws) {
 577                 Container *container = r_ws->table[cols][rows];
 578                 int single_width = -1, single_height;
 579                 /* Update position of the container */
 580                 container->row = rows;
 581                 container->col = cols;
 582                 container->x = xoffset[rows];
 583                 container->y = yoffset[cols];
 584                 container->width = 0;
 585
 586                 for (int c = 0; c < container->colspan; c++) {
 587                         if (r_ws->width_factor[cols+c] == 0)
 588                                 container->width += (width / r_ws->cols);
 589                         else container->width += get_unoccupied_x(r_ws) * r_ws->width_factor[cols+c];
 590
 591                         if (single_width == -1)
 592                                 single_width = container->width;
 593                 }
 594
 595                 //if (container->height_factor == 0)
 596                         container->height = (height / r_ws->rows);
 597                 //else container->height = get_unoccupied_y(r_ws, cols) * container->height_factor;
 598                 single_height = container->height;
 599                 container->height *= container->rowspan;
 600
 601                 /* Render the container if it is not empty */
 602                 render_container(conn, container);
 603
 604                 xoffset[rows] += single_width;
 605                 yoffset[cols] += single_height;
 606         }
 607
 608         ignore_enter_notify_forall(conn, r_ws, false);
 609
 610         render_bars(conn, r_ws, width, &height);
 611         render_internal_bar(conn, r_ws, width, font->height + 6);
 612 }
 613
 614 /*
 615  * Renders the whole layout, that is: Go through each screen, each workspace, each container
 616  * and render each client. This also renders the bars.
 617  *
 618  * If you don’t need to render *everything*, you should call render_container on the container
 619  * you want to refresh.
 620  *
 621  */
 622 void render_layout(xcb_connection_t *conn) {
 623         i3Screen *screen;
 624
 625         TAILQ_FOREACH(screen, virtual_screens, screens)
 626                 render_workspace(conn, screen, &(workspaces[screen->current_workspace]));
 627
 628         xcb_flush(conn);
 629 }