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) {
  67         int height = workspace->rect.height;
  68         i3Font *font = load_font(global_conn, config.font);
  69
  70         /* Reserve space for dock clients */
  71         Client *client;
  72         SLIST_FOREACH(client, &(workspace->screen->dock_clients), dock_clients)
  73                 height -= client->desired_height;
  74
  75         /* Space for the internal bar */
  76         height -= (font->height + 6);
  77
  78         int unoccupied = height;
  79         float default_factor = ((float)height / workspace->rows) / height;
  80
  81         LOG("get_unoccupied_y(), starting with %d, default_factor = %f\n", unoccupied, default_factor);
  82
  83         for (int rows = 0; rows < workspace->rows; rows++) {
  84                 LOG("height_factor[%d] = %f\n", rows, workspace->height_factor[rows]);
  85                 if (workspace->height_factor[rows] == 0)
  86                         unoccupied -= height * default_factor;
  87         }
  88
  89         LOG("unoccupied space: %d\n", unoccupied);
  90         return unoccupied;
  91 }
  92
  93 /*
  94  * Redecorates the given client correctly by checking if it’s in a stacking container and
  95  * re-rendering the stack window or just calling decorate_window if it’s not in a stacking
  96  * container.
  97  *
  98  */
  99 void redecorate_window(xcb_connection_t *conn, Client *client) {
 100         if (client->container != NULL &&
 101             (client->container->mode == MODE_STACK ||
 102              client->container->mode == MODE_TABBED)) {
 103                 render_container(conn, client->container);
 104                 /* We clear the frame to generate exposure events, because the color used
 105                    in drawing may be different */
 106                 xcb_clear_area(conn, true, client->frame, 0, 0, client->rect.width, client->rect.height);
 107         } else decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
 108         xcb_flush(conn);
 109 }
 110
 111 /*
 112  * (Re-)draws window decorations for a given Client onto the given drawable/graphic context.
 113  * When in stacking mode, the window decorations are drawn onto an own window.
 114  *
 115  */
 116 void decorate_window(xcb_connection_t *conn, Client *client, xcb_drawable_t drawable,
 117                      xcb_gcontext_t gc, int offset_x, int offset_y) {
 118         i3Font *font = load_font(conn, config.font);
 119         int decoration_height = font->height + 2 + 2;
 120         struct Colortriple *color;
 121         Client *last_focused;
 122
 123         /* Clients without a container (docks) won’t get decorated */
 124         if (client->dock)
 125                 return;
 126
 127         last_focused = SLIST_FIRST(&(client->workspace->focus_stack));
 128         if (client_is_floating(client)) {
 129                 if (last_focused == client)
 130                         color = &(config.client.focused);
 131                 else color = &(config.client.unfocused);
 132         } else {
 133                 if (client->container->currently_focused == client) {
 134                         /* Distinguish if the window is currently focused… */
 135                         if (last_focused == client && c_ws == client->workspace)
 136                                 color = &(config.client.focused);
 137                         /* …or if it is the focused window in a not focused container */
 138                         else color = &(config.client.focused_inactive);
 139                 } else color = &(config.client.unfocused);
 140         }
 141
 142         /* Our plan is the following:
 143            - Draw a rect around the whole client in color->background
 144            - Draw two lines in a lighter color
 145            - Draw the window’s title
 146          */
 147
 148         /* Draw a rectangle in background color around the window */
 149         if (client->borderless && (client->container == NULL ||
 150             (client->container->mode != MODE_STACK &&
 151              client->container->mode != MODE_TABBED)))
 152                 xcb_change_gc_single(conn, gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
 153         else xcb_change_gc_single(conn, gc, XCB_GC_FOREGROUND, color->background);
 154
 155         /* In stacking mode, we only render the rect for this specific decoration */
 156         if (client->container != NULL && (client->container->mode == MODE_STACK || client->container->mode == MODE_TABBED)) {
 157                 /* We need to use the container’s width because it is the more recent value - when
 158                    in stacking mode, clients get reconfigured only on demand (the not active client
 159                    is not reconfigured), so the client’s rect.width would be wrong */
 160                 xcb_rectangle_t rect = {offset_x, offset_y,
 161                                         offset_x + client->container->width,
 162                                         offset_y + decoration_height };
 163                 xcb_poly_fill_rectangle(conn, drawable, gc, 1, &rect);
 164         } else {
 165                 xcb_rectangle_t rect = {0, 0, client->rect.width, client->rect.height};
 166                 xcb_poly_fill_rectangle(conn, drawable, gc, 1, &rect);
 167
 168                 /* Draw the inner background to have a black frame around clients (such as mplayer)
 169                    which cannot be resized exactly in our frames and therefore are centered */
 170                 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
 171                 xcb_rectangle_t crect = {2, decoration_height,
 172                                          client->rect.width - (2 + 2), client->rect.height - 2 - decoration_height};
 173                 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
 174         }
 175
 176         if (client->titlebar_position != TITLEBAR_OFF) {
 177                 /* Draw the lines */
 178                 xcb_draw_line(conn, drawable, gc, color->border, offset_x, offset_y, offset_x + client->rect.width, offset_y);
 179                 if ((client->container == NULL ||
 180                     (client->container->mode != MODE_STACK &&
 181                      client->container->mode != MODE_TABBED) ||
 182                     CIRCLEQ_NEXT_OR_NULL(&(client->container->clients), client, clients) == NULL))
 183                         xcb_draw_line(conn, drawable, gc, color->border,
 184                                       offset_x + 2, /* x */
 185                                       offset_y + font->height + 3, /* y */
 186                                       offset_x + client->rect.width - 3, /* to_x */
 187                                       offset_y + font->height + 3 /* to_y */);
 188         }
 189
 190         /* If the client has a title, we draw it */
 191         if (client->name != NULL) {
 192                 /* Draw the font */
 193                 uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT;
 194                 uint32_t values[] = { color->text, color->background, font->id };
 195                 xcb_change_gc(conn, gc, mask, values);
 196
 197                 /* name_len == -1 means this is a legacy application which does not specify _NET_WM_NAME,
 198                    and we don’t handle the old window name (COMPOUND_TEXT) but only _NET_WM_NAME, which
 199                    is UTF-8 */
 200                 if (client->name_len == -1)
 201                         xcb_image_text_8(conn, strlen(client->name), drawable, gc, offset_x + 3 /* X */,
 202                                          offset_y + font->height /* Y = baseline of font */, client->name);
 203                 else
 204                         xcb_image_text_16(conn, client->name_len, drawable, gc, offset_x + 3 /* X */,
 205                                           offset_y + font->height /* Y = baseline of font */, (xcb_char2b_t*)client->name);
 206         }
 207 }
 208
 209 /*
 210  * Pushes the client’s x and y coordinates to X11
 211  *
 212  */
 213 void reposition_client(xcb_connection_t *conn, Client *client) {
 214         i3Screen *screen;
 215
 216         LOG("frame 0x%08x needs to be pushed to %dx%d\n", client->frame, client->rect.x, client->rect.y);
 217         /* Note: We can use a pointer to client->x like an array of uint32_ts
 218            because it is followed by client->y by definition */
 219         xcb_configure_window(conn, client->frame, XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, &(client->rect.x));
 220
 221         if (!client_is_floating(client))
 222                 return;
 223
 224         /* If the client is floating, we need to check if we moved it to a different workspace */
 225         if (client->workspace->screen == (screen = get_screen_containing(client->rect.x, client->rect.y)))
 226                 return;
 227
 228         if (screen == NULL) {
 229                 LOG("Boundary checking disabled, no screen found for (%d, %d)\n", client->rect.x, client->rect.y);
 230                 return;
 231         }
 232
 233         LOG("Client is on workspace %p with screen %p\n", client->workspace, client->workspace->screen);
 234         LOG("but screen at %d, %d is %p\n", client->rect.x, client->rect.y, screen);
 235         floating_assign_to_workspace(client, &workspaces[screen->current_workspace]);
 236 }
 237
 238 /*
 239  * Pushes the client’s width/height to X11 and resizes the child window. This
 240  * function also updates the client’s position, so if you work on tiling clients
 241  * only, you can use this function instead of separate calls to reposition_client
 242  * and resize_client to reduce flickering.
 243  *
 244  */
 245 void resize_client(xcb_connection_t *conn, Client *client) {
 246         i3Font *font = load_font(conn, config.font);
 247
 248         LOG("frame 0x%08x needs to be pushed to %dx%d\n", client->frame, client->rect.x, client->rect.y);
 249         LOG("resizing client 0x%08x to %d x %d\n", client->frame, client->rect.width, client->rect.height);
 250         xcb_configure_window(conn, client->frame,
 251                         XCB_CONFIG_WINDOW_X |
 252                         XCB_CONFIG_WINDOW_Y |
 253                         XCB_CONFIG_WINDOW_WIDTH |
 254                         XCB_CONFIG_WINDOW_HEIGHT,
 255                         &(client->rect.x));
 256
 257         /* Adjust the position of the child inside its frame.
 258          * The coordinates of the child are relative to its frame, we
 259          * add a border of 2 pixel to each value */
 260         uint32_t mask = XCB_CONFIG_WINDOW_X |
 261                         XCB_CONFIG_WINDOW_Y |
 262                         XCB_CONFIG_WINDOW_WIDTH |
 263                         XCB_CONFIG_WINDOW_HEIGHT;
 264         Rect *rect = &(client->child_rect);
 265         switch ((client->container != NULL ? client->container->mode : MODE_DEFAULT)) {
 266                 case MODE_STACK:
 267                 case MODE_TABBED:
 268                         rect->x = 2;
 269                         rect->y = 0;
 270                         rect->width = client->rect.width - (2 + 2);
 271                         rect->height = client->rect.height - 2;
 272                         break;
 273                 default:
 274                         if (client->titlebar_position == TITLEBAR_OFF && client->borderless) {
 275                                 rect->x = 0;
 276                                 rect->y = 0;
 277                                 rect->width = client->rect.width;
 278                                 rect->height = client->rect.height;
 279                         } else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) {
 280                                 rect->x = 1;
 281                                 rect->y = 1;
 282                                 rect->width = client->rect.width - 1 - 1;
 283                                 rect->height = client->rect.height - 1 - 1;
 284                         } else {
 285                                 rect->x = 2;
 286                                 rect->y = font->height + 2 + 2;
 287                                 rect->width = client->rect.width - (2 + 2);
 288                                 rect->height = client->rect.height - ((font->height + 2 + 2) + 2);
 289                         }
 290                         break;
 291         }
 292
 293         /* Obey the ratio, if any */
 294         if (client->proportional_height != 0 &&
 295             client->proportional_width != 0) {
 296                 LOG("proportional height = %d, width = %d\n", client->proportional_height, client->proportional_width);
 297                 double new_height = rect->height + 1;
 298                 int new_width = rect->width;
 299
 300                 while (new_height > rect->height) {
 301                         new_height = ((double)client->proportional_height / client->proportional_width) * new_width;
 302
 303                         if (new_height > rect->height)
 304                                 new_width--;
 305                 }
 306                 /* Center the window */
 307                 rect->y += ceil(rect->height / 2) - floor(new_height / 2);
 308                 rect->x += ceil(rect->width / 2) - floor(new_width / 2);
 309
 310                 rect->height = new_height;
 311                 rect->width = new_width;
 312                 LOG("new_height = %f, new_width = %d\n", new_height, new_width);
 313         }
 314
 315         if (client->height_increment > 1) {
 316                 int old_height = rect->height;
 317                 rect->height -= (rect->height - client->base_height) % client->height_increment;
 318                 LOG("Lost %d pixel due to client's height_increment (%d px)\n",
 319                     old_height - rect->height, client->height_increment);
 320         }
 321
 322         if (client->width_increment > 1) {
 323                 int old_width = rect->width;
 324                 rect->width -= (rect->width - client->base_width) % client->width_increment;
 325                 LOG("Lost %d pixel due to client's width_increment (%d px)\n",
 326                     old_width - rect->width, client->width_increment);
 327         }
 328
 329         LOG("child will be at %dx%d with size %dx%d\n", rect->x, rect->y, rect->width, rect->height);
 330
 331         xcb_configure_window(conn, client->child, mask, &(rect->x));
 332
 333         /* After configuring a child window we need to fake a configure_notify_event (see ICCCM 4.2.3).
 334          * This is necessary to inform the client of its position relative to the root window,
 335          * not relative to its frame (as done in the configure_notify_event by the x server). */
 336         fake_absolute_configure_notify(conn, client);
 337
 338         /* Force redrawing after resizing the window because any now lost
 339          * pixels could contain old garbage. */
 340         xcb_expose_event_t generated;
 341         generated.window = client->frame;
 342         generated.count = 0;
 343         handle_expose_event(NULL, conn, &generated);
 344 }
 345
 346 /*
 347  * Renders the given container. Is called by render_layout() or individually (for example
 348  * when focus changes in a stacking container)
 349  *
 350  */
 351 void render_container(xcb_connection_t *conn, Container *container) {
 352         Client *client;
 353         int num_clients = 0, current_client = 0;
 354
 355         CIRCLEQ_FOREACH(client, &(container->clients), clients)
 356                 num_clients++;
 357
 358         if (container->mode == MODE_DEFAULT) {
 359                 CIRCLEQ_FOREACH(client, &(container->clients), clients) {
 360                         /* If the client is in fullscreen mode, it does not get reconfigured */
 361                         if (container->workspace->fullscreen_client == client) {
 362                                 current_client++;
 363                                 continue;
 364                         }
 365
 366                         /* Check if we changed client->x or client->y by updating it.
 367                          * Note the bitwise OR instead of logical OR to force evaluation of both statements */
 368                         if (client->force_reconfigure |
 369                             update_if_necessary(&(client->rect.x), container->x) |
 370                             update_if_necessary(&(client->rect.y), container->y +
 371                                         (container->height / num_clients) * current_client) |
 372                             update_if_necessary(&(client->rect.width), container->width) |
 373                             update_if_necessary(&(client->rect.height), container->height / num_clients))
 374                                 resize_client(conn, client);
 375
 376                         /* TODO: vertical default layout */
 377
 378                         client->force_reconfigure = false;
 379
 380                         current_client++;
 381                 }
 382         } else {
 383                 i3Font *font = load_font(conn, config.font);
 384                 int decoration_height = (font->height + 2 + 2);
 385                 struct Stack_Window *stack_win = &(container->stack_win);
 386                 /* The size for each tab (width), necessary as a separate variable
 387                  * because num_clients gets fixed to 1 in tabbed mode. */
 388                 int size_each = (num_clients == 0 ? container->width : container->width / num_clients);
 389
 390                 /* Check if we need to remap our stack title window, it gets unmapped when the container
 391                    is empty in src/handlers.c:unmap_notify() */
 392                 if (stack_win->rect.height == 0 && num_clients > 0) {
 393                         LOG("remapping stack win\n");
 394                         xcb_map_window(conn, stack_win->window);
 395                 } else LOG("not remapping stackwin, height = %d, num_clients = %d\n",
 396                                 stack_win->rect.height, num_clients);
 397
 398                 if (container->mode == MODE_TABBED) {
 399                         /* By setting num_clients to 1 we force that the stack window will be only one line
 400                          * high. The rest of the code is useful in both cases. */
 401                         LOG("tabbed mode, setting num_clients = 1\n");
 402                         if (num_clients > 1)
 403                                 num_clients = 1;
 404                 }
 405
 406                 /* Check if we need to reconfigure our stack title window */
 407                 if (update_if_necessary(&(stack_win->rect.x), container->x) |
 408                     update_if_necessary(&(stack_win->rect.y), container->y) |
 409                     update_if_necessary(&(stack_win->rect.width), container->width) |
 410                     update_if_necessary(&(stack_win->rect.height), decoration_height * num_clients)) {
 411
 412                         /* Configuration can happen in two slightly different ways:
 413
 414                            If there is no client in fullscreen mode, 5 parameters are passed
 415                            (x, y, width, height, stack mode is set to above which means top-most position).
 416
 417                            If there is a fullscreen client, the fourth parameter is set to to the
 418                            fullscreen window as sibling and the stack mode is set to below, which means
 419                            that the stack_window will be placed just below the sibling, that is, under
 420                            the fullscreen window.
 421                          */
 422                         uint32_t values[] = { stack_win->rect.x, stack_win->rect.y,
 423                                               stack_win->rect.width, stack_win->rect.height,
 424                                               XCB_STACK_MODE_ABOVE, XCB_STACK_MODE_BELOW };
 425                         uint32_t mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y |
 426                                         XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT |
 427                                         XCB_CONFIG_WINDOW_STACK_MODE;
 428
 429                         /* Raise the stack window, but keep it below the first floating client
 430                          * and below the fullscreen client (if any) */
 431                         Client *first_floating = TAILQ_FIRST(&(container->workspace->floating_clients));
 432                         if (first_floating != TAILQ_END(&(container->workspace->floating_clients))) {
 433                                 mask |= XCB_CONFIG_WINDOW_SIBLING;
 434                                 values[4] = first_floating->frame;
 435                         } else if (container->workspace->fullscreen_client != NULL) {
 436                                 mask |= XCB_CONFIG_WINDOW_SIBLING;
 437                                 values[4] = container->workspace->fullscreen_client->frame;
 438                         }
 439
 440                         xcb_configure_window(conn, stack_win->window, mask, values);
 441                 }
 442
 443                 /* Prepare the pixmap for usage */
 444                 cached_pixmap_prepare(conn, &(stack_win->pixmap));
 445
 446                 /* Render the decorations of all clients */
 447                 CIRCLEQ_FOREACH(client, &(container->clients), clients) {
 448                         /* If the client is in fullscreen mode, it does not get reconfigured */
 449                         if (container->workspace->fullscreen_client == client) {
 450                                 current_client++;
 451                                 continue;
 452                         }
 453
 454                         /* Check if we changed client->x or client->y by updating it.
 455                          * Note the bitwise OR instead of logical OR to force evaluation of all statements */
 456                         if (client->force_reconfigure |
 457                             update_if_necessary(&(client->rect.x), container->x) |
 458                             update_if_necessary(&(client->rect.y), container->y + (decoration_height * num_clients)) |
 459                             update_if_necessary(&(client->rect.width), container->width) |
 460                             update_if_necessary(&(client->rect.height), container->height - (decoration_height * num_clients)))
 461                                 resize_client(conn, client);
 462
 463                         client->force_reconfigure = false;
 464
 465                         int offset_x = 0;
 466                         int offset_y = 0;
 467                         if (container->mode == MODE_STACK)
 468                                 offset_y = current_client++ * decoration_height;
 469                         else if (container->mode == MODE_TABBED)
 470                                 offset_x = current_client++ * size_each;
 471                         decorate_window(conn, client, stack_win->pixmap.id, stack_win->pixmap.gc,
 472                                         offset_x, offset_y);
 473                 }
 474
 475                 xcb_copy_area(conn, stack_win->pixmap.id, stack_win->window, stack_win->pixmap.gc,
 476                               0, 0, 0, 0, stack_win->rect.width, stack_win->rect.height);
 477         }
 478 }
 479
 480 static void render_bars(xcb_connection_t *conn, Workspace *r_ws, int width, int *height) {
 481         Client *client;
 482         SLIST_FOREACH(client, &(r_ws->screen->dock_clients), dock_clients) {
 483                 LOG("client is at %d, should be at %d\n", client->rect.y, *height);
 484                 if (client->force_reconfigure |
 485                     update_if_necessary(&(client->rect.x), r_ws->rect.x) |
 486                     update_if_necessary(&(client->rect.y), *height))
 487                         reposition_client(conn, client);
 488
 489                 if (client->force_reconfigure |
 490                     update_if_necessary(&(client->rect.width), width) |
 491                     update_if_necessary(&(client->rect.height), client->desired_height))
 492                         resize_client(conn, client);
 493
 494                 client->force_reconfigure = false;
 495                 LOG("desired_height = %d\n", client->desired_height);
 496                 *height += client->desired_height;
 497         }
 498 }
 499
 500 static void render_internal_bar(xcb_connection_t *conn, Workspace *r_ws, int width, int height) {
 501         i3Font *font = load_font(conn, config.font);
 502         i3Screen *screen = r_ws->screen;
 503         enum { SET_NORMAL = 0, SET_FOCUSED = 1 };
 504
 505         /* Fill the whole bar in black */
 506         xcb_change_gc_single(conn, screen->bargc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
 507         xcb_rectangle_t rect = {0, 0, width, height};
 508         xcb_poly_fill_rectangle(conn, screen->bar, screen->bargc, 1, &rect);
 509
 510         /* Set font */
 511         xcb_change_gc_single(conn, screen->bargc, XCB_GC_FONT, font->id);
 512
 513         int drawn = 0;
 514         for (int c = 0; c < 10; c++) {
 515                 if (workspaces[c].screen != screen)
 516                         continue;
 517
 518                 struct Colortriple *color = (screen->current_workspace == c ? &(config.bar.focused) :
 519                                              &(config.bar.unfocused));
 520                 Workspace *ws = &workspaces[c];
 521
 522                 /* Draw the outer rect */
 523                 xcb_draw_rect(conn, screen->bar, screen->bargc, color->border,
 524                               drawn,              /* x */
 525                               1,                  /* y */
 526                               ws->text_width + 5 + 5, /* width = text width + 5 px left + 5px right */
 527                               height - 2          /* height = max. height - 1 px upper and 1 px bottom border */);
 528
 529                 /* Draw the background of this rect */
 530                 xcb_draw_rect(conn, screen->bar, screen->bargc, color->background,
 531                               drawn + 1,
 532                               2,
 533                               ws->text_width + 4 + 4,
 534                               height - 4);
 535
 536                 xcb_change_gc_single(conn, screen->bargc, XCB_GC_FOREGROUND, color->text);
 537                 xcb_change_gc_single(conn, screen->bargc, XCB_GC_BACKGROUND, color->background);
 538                 xcb_image_text_16(conn, ws->name_len, screen->bar, screen->bargc, drawn + 5 /* X */,
 539                                   font->height + 1 /* Y = baseline of font */,
 540                                   (xcb_char2b_t*)ws->name);
 541                 drawn += ws->text_width + 12;
 542         }
 543 }
 544
 545 /*
 546  * Modifies the event mask of all clients on the given workspace to either ignore or to handle
 547  * enter notifies. It is handy to ignore notifies because they will be sent when a window is mapped
 548  * under the cursor, thus when the user didn’t enter the window actively at all.
 549  *
 550  */
 551 void ignore_enter_notify_forall(xcb_connection_t *conn, Workspace *workspace, bool ignore_enter_notify) {
 552         Client *client;
 553         uint32_t values[1];
 554
 555         FOR_TABLE(workspace)
 556                 CIRCLEQ_FOREACH(client, &(workspace->table[cols][rows]->clients), clients) {
 557                         /* Change event mask for the decorations */
 558                         values[0] = FRAME_EVENT_MASK;
 559                         if (ignore_enter_notify)
 560                                 values[0] &= ~(XCB_EVENT_MASK_ENTER_WINDOW);
 561                         xcb_change_window_attributes(conn, client->frame, XCB_CW_EVENT_MASK, values);
 562
 563                         /* Change event mask for the child itself */
 564                         values[0] = CHILD_EVENT_MASK;
 565                         if (ignore_enter_notify)
 566                                 values[0] &= ~(XCB_EVENT_MASK_ENTER_WINDOW);
 567                         xcb_change_window_attributes(conn, client->child, XCB_CW_EVENT_MASK, values);
 568                 }
 569 }
 570
 571 /*
 572  * Renders the given workspace on the given screen
 573  *
 574  */
 575 void render_workspace(xcb_connection_t *conn, i3Screen *screen, Workspace *r_ws) {
 576         i3Font *font = load_font(conn, config.font);
 577         int width = r_ws->rect.width;
 578         int height = r_ws->rect.height;
 579
 580         /* Reserve space for dock clients */
 581         Client *client;
 582         SLIST_FOREACH(client, &(screen->dock_clients), dock_clients)
 583                 height -= client->desired_height;
 584
 585         /* Space for the internal bar */
 586         height -= (font->height + 6);
 587
 588         int xoffset[r_ws->rows];
 589         int yoffset[r_ws->cols];
 590         /* Initialize offsets */
 591         for (int cols = 0; cols < r_ws->cols; cols++)
 592                 yoffset[cols] = r_ws->rect.y;
 593         for (int rows = 0; rows < r_ws->rows; rows++)
 594                 xoffset[rows] = r_ws->rect.x;
 595
 596         ignore_enter_notify_forall(conn, r_ws, true);
 597
 598         /* Go through the whole table and render what’s necessary */
 599         FOR_TABLE(r_ws) {
 600                 Container *container = r_ws->table[cols][rows];
 601                 int single_width = -1, single_height = -1;
 602                 /* Update position of the container */
 603                 container->row = rows;
 604                 container->col = cols;
 605                 container->x = xoffset[rows];
 606                 container->y = yoffset[cols];
 607                 container->width = 0;
 608
 609                 for (int c = 0; c < container->colspan; c++) {
 610                         if (r_ws->width_factor[cols+c] == 0)
 611                                 container->width += (width / r_ws->cols);
 612                         else container->width += get_unoccupied_x(r_ws) * r_ws->width_factor[cols+c];
 613
 614                         if (single_width == -1)
 615                                 single_width = container->width;
 616                 }
 617
 618                 LOG("height is %d\n", height);
 619
 620                 container->height = 0;
 621
 622                 for (int c = 0; c < container->rowspan; c++) {
 623                         if (r_ws->height_factor[rows+c] == 0)
 624                                 container->height += (height / r_ws->rows);
 625                         else container->height += get_unoccupied_y(r_ws) * r_ws->height_factor[rows+c];
 626
 627                         if (single_height == -1)
 628                                 single_height = container->height;
 629                 }
 630
 631
 632                 //if (container->height_factor == 0)
 633                         //container->height = (height / r_ws->rows);
 634                 //else container->height = get_unoccupied_y(r_ws, cols) * container->height_factor;
 635                 //single_height = container->height;
 636                 //container->height *= container->rowspan;
 637
 638                 /* Render the container if it is not empty */
 639                 render_container(conn, container);
 640
 641                 xoffset[rows] += single_width;
 642                 yoffset[cols] += single_height;
 643         }
 644
 645         ignore_enter_notify_forall(conn, r_ws, false);
 646
 647         render_bars(conn, r_ws, width, &height);
 648         render_internal_bar(conn, r_ws, width, font->height + 6);
 649 }
 650
 651 /*
 652  * Renders the whole layout, that is: Go through each screen, each workspace, each container
 653  * and render each client. This also renders the bars.
 654  *
 655  * If you don’t need to render *everything*, you should call render_container on the container
 656  * you want to refresh.
 657  *
 658  */
 659 void render_layout(xcb_connection_t *conn) {
 660         i3Screen *screen;
 661
 662         TAILQ_FOREACH(screen, virtual_screens, screens)
 663                 render_workspace(conn, screen, &(workspaces[screen->current_workspace]));
 664
 665         xcb_flush(conn);
 666 }