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

   1 /*
   2  * vim:ts=8:expandtab
   3  *
   4  * i3 - an improved dynamic tiling window manager
   5  *
   6  * © 2009 Michael Stapelberg and contributors
   7  *
   8  * See file LICENSE for license information.
   9  *
  10  * layout.c: Functions handling layout/drawing of window decorations
  11  *
  12  */
  13 #include <stdio.h>
  14 #include <string.h>
  15 #include <stdlib.h>
  16 #include <xcb/xcb.h>
  17 #include <assert.h>
  18 #include <math.h>
  19
  20 #include "config.h"
  21 #include "i3.h"
  22 #include "xcb.h"
  23 #include "table.h"
  24 #include "util.h"
  25 #include "xinerama.h"
  26 #include "layout.h"
  27 #include "client.h"
  28 #include "floating.h"
  29 #include "handlers.h"
  30
  31 /*
  32  * Updates *destination with new_value and returns true if it was changed or false
  33  * if it was the same
  34  *
  35  */
  36 static bool update_if_necessary(uint32_t *destination, const uint32_t new_value) {
  37         uint32_t old_value = *destination;
  38
  39         return ((*destination = new_value) != old_value);
  40 }
  41
  42 /*
  43  * Gets the unoccupied space (= space which is available for windows which were resized by the user)
  44  * for the given row. This is necessary to render both, customly resized windows and never touched
  45  * windows correctly, meaning that the aspect ratio will be maintained when opening new windows.
  46  *
  47  */
  48 int get_unoccupied_x(Workspace *workspace) {
  49         int unoccupied = workspace->rect.width;
  50         float default_factor = ((float)workspace->rect.width / workspace->cols) / workspace->rect.width;
  51
  52         LOG("get_unoccupied_x(), starting with %d, default_factor = %f\n", unoccupied, default_factor);
  53
  54         for (int cols = 0; cols < workspace->cols; cols++) {
  55                 LOG("width_factor[%d] = %f\n", cols, workspace->width_factor[cols]);
  56
  57                 if (workspace->width_factor[cols] == 0)
  58                         unoccupied -= workspace->rect.width * default_factor;
  59         }
  60
  61         LOG("unoccupied space: %d\n", unoccupied);
  62         return unoccupied;
  63 }
  64
  65 /* See get_unoccupied_x() */
  66 int get_unoccupied_y(Workspace *workspace, int col) {
  67         int unoccupied = workspace->rect.height;
  68         float default_factor = ((float)workspace->rect.height / workspace->rows) / workspace->rect.height;
  69
  70         LOG("get_unoccupied_y(), starting with %d, default_factor = %f\n", unoccupied, default_factor);
  71
  72         for (int rows = 0; rows < workspace->rows; rows++) {
  73                 LOG("height_factor[%d] = %f\n", rows, workspace->height_factor[rows]);
  74                 if (workspace->height_factor[rows] == 0)
  75                         unoccupied -= workspace->rect.height * default_factor;
  76         }
  77
  78         LOG("unoccupied space: %d\n", unoccupied);
  79         return unoccupied;
  80 }
  81
  82 /*
  83  * Redecorates the given client correctly by checking if it’s in a stacking container and
  84  * re-rendering the stack window or just calling decorate_window if it’s not in a stacking
  85  * container.
  86  *
  87  */
  88 void redecorate_window(xcb_connection_t *conn, Client *client) {
  89         if (client->container != NULL &&
  90             (client->container->mode == MODE_STACK ||
  91              client->container->mode == MODE_TABBED)) {
  92                 render_container(conn, client->container);
  93                 /* We clear the frame to generate exposure events, because the color used
  94                    in drawing may be different */
  95                 xcb_clear_area(conn, true, client->frame, 0, 0, client->rect.width, client->rect.height);
  96         } else decorate_window(conn, client, client->frame, client->titlegc, 0, 0);
  97         xcb_flush(conn);
  98 }
  99
 100 /*
 101  * (Re-)draws window decorations for a given Client onto the given drawable/graphic context.
 102  * When in stacking mode, the window decorations are drawn onto an own window.
 103  *
 104  */
 105 void decorate_window(xcb_connection_t *conn, Client *client, xcb_drawable_t drawable,
 106                      xcb_gcontext_t gc, int offset_x, int offset_y) {
 107         i3Font *font = load_font(conn, config.font);
 108         int decoration_height = font->height + 2 + 2;
 109         struct Colortriple *color;
 110         Client *last_focused;
 111
 112         /* Clients without a container (docks) won’t get decorated */
 113         if (client->dock)
 114                 return;
 115
 116         last_focused = SLIST_FIRST(&(client->workspace->focus_stack));
 117         if (client_is_floating(client)) {
 118                 if (last_focused == client)
 119                         color = &(config.client.focused);
 120                 else color = &(config.client.unfocused);
 121         } else {
 122                 if (client->container->currently_focused == client) {
 123                         /* Distinguish if the window is currently focused… */
 124                         if (last_focused == client && c_ws == client->workspace)
 125                                 color = &(config.client.focused);
 126                         /* …or if it is the focused window in a not focused container */
 127                         else color = &(config.client.focused_inactive);
 128                 } else color = &(config.client.unfocused);
 129         }
 130
 131         /* Our plan is the following:
 132            - Draw a rect around the whole client in color->background
 133            - Draw two lines in a lighter color
 134            - Draw the window’s title
 135          */
 136
 137         /* Draw a rectangle in background color around the window */
 138         if (client->borderless)
 139                 xcb_change_gc_single(conn, gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
 140         else xcb_change_gc_single(conn, gc, XCB_GC_FOREGROUND, color->background);
 141
 142         /* In stacking mode, we only render the rect for this specific decoration */
 143         if (client->container != NULL && (client->container->mode == MODE_STACK || client->container->mode == MODE_TABBED)) {
 144                 /* We need to use the container’s width because it is the more recent value - when
 145                    in stacking mode, clients get reconfigured only on demand (the not active client
 146                    is not reconfigured), so the client’s rect.width would be wrong */
 147                 xcb_rectangle_t rect = {offset_x, offset_y,
 148                                         offset_x + client->container->width,
 149                                         offset_y + decoration_height };
 150                 xcb_poly_fill_rectangle(conn, drawable, gc, 1, &rect);
 151         } else {
 152                 xcb_rectangle_t rect = {0, 0, client->rect.width, client->rect.height};
 153                 xcb_poly_fill_rectangle(conn, drawable, gc, 1, &rect);
 154
 155                 /* Draw the inner background to have a black frame around clients (such as mplayer)
 156                    which cannot be resized exactly in our frames and therefore are centered */
 157                 xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
 158                 xcb_rectangle_t crect = {2, decoration_height,
 159                                          client->rect.width - (2 + 2), client->rect.height - 2 - decoration_height};
 160                 xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect);
 161         }
 162
 163         if (client->titlebar_position != TITLEBAR_OFF) {
 164                 /* Draw the lines */
 165                 xcb_draw_line(conn, drawable, gc, color->border, offset_x, offset_y, offset_x + client->rect.width, offset_y);
 166                 if ((client->container == NULL ||
 167                     (client->container->mode != MODE_STACK &&
 168                      client->container->mode != MODE_TABBED) ||
 169                     CIRCLEQ_NEXT_OR_NULL(&(client->container->clients), client, clients) == NULL))
 170                         xcb_draw_line(conn, drawable, gc, color->border,
 171                                       offset_x + 2, /* x */
 172                                       offset_y + font->height + 3, /* y */
 173                                       offset_x + client->rect.width - 3, /* to_x */
 174                                       offset_y + font->height + 3 /* to_y */);
 175         }
 176
 177         /* If the client has a title, we draw it */
 178         if (client->name != NULL) {
 179                 /* Draw the font */
 180                 uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT;
 181                 uint32_t values[] = { color->text, color->background, font->id };
 182                 xcb_change_gc(conn, gc, mask, values);
 183
 184                 /* name_len == -1 means this is a legacy application which does not specify _NET_WM_NAME,
 185                    and we don’t handle the old window name (COMPOUND_TEXT) but only _NET_WM_NAME, which
 186                    is UTF-8 */
 187                 if (client->name_len == -1)
 188                         xcb_image_text_8(conn, strlen(client->name), drawable, gc, offset_x + 3 /* X */,
 189                                          offset_y + font->height /* Y = baseline of font */, client->name);
 190                 else
 191                         xcb_image_text_16(conn, client->name_len, drawable, gc, offset_x + 3 /* X */,
 192                                           offset_y + font->height /* Y = baseline of font */, (xcb_char2b_t*)client->name);
 193         }
 194 }
 195
 196 /*
 197  * Pushes the client’s x and y coordinates to X11
 198  *
 199  */
 200 void reposition_client(xcb_connection_t *conn, Client *client) {
 201         i3Screen *screen;
 202
 203         LOG("frame 0x%08x needs to be pushed to %dx%d\n", client->frame, client->rect.x, client->rect.y);
 204         /* Note: We can use a pointer to client->x like an array of uint32_ts
 205            because it is followed by client->y by definition */
 206         xcb_configure_window(conn, client->frame, XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, &(client->rect.x));
 207
 208         if (!client_is_floating(client))
 209                 return;
 210
 211         /* If the client is floating, we need to check if we moved it to a different workspace */
 212         if (client->workspace->screen == (screen = get_screen_containing(client->rect.x, client->rect.y)))
 213                 return;
 214
 215         if (screen == NULL) {
 216                 LOG("Boundary checking disabled, no screen found for (%d, %d)\n", client->rect.x, client->rect.y);
 217                 return;
 218         }
 219
 220         LOG("Client is on workspace %p with screen %p\n", client->workspace, client->workspace->screen);
 221         LOG("but screen at %d, %d is %p\n", client->rect.x, client->rect.y, screen);
 222         floating_assign_to_workspace(client, &workspaces[screen->current_workspace]);
 223 }
 224
 225 /*
 226  * Pushes the client’s width/height to X11 and resizes the child window. This
 227  * function also updates the client’s position, so if you work on tiling clients
 228  * only, you can use this function instead of separate calls to reposition_client
 229  * and resize_client to reduce flickering.
 230  *
 231  */
 232 void resize_client(xcb_connection_t *conn, Client *client) {
 233         i3Font *font = load_font(conn, config.font);
 234
 235         LOG("frame 0x%08x needs to be pushed to %dx%d\n", client->frame, client->rect.x, client->rect.y);
 236         LOG("resizing client 0x%08x to %d x %d\n", client->frame, client->rect.width, client->rect.height);
 237         xcb_configure_window(conn, client->frame,
 238                         XCB_CONFIG_WINDOW_X |
 239                         XCB_CONFIG_WINDOW_Y |
 240                         XCB_CONFIG_WINDOW_WIDTH |
 241                         XCB_CONFIG_WINDOW_HEIGHT,
 242                         &(client->rect.x));
 243
 244         /* Adjust the position of the child inside its frame.
 245          * The coordinates of the child are relative to its frame, we
 246          * add a border of 2 pixel to each value */
 247         uint32_t mask = XCB_CONFIG_WINDOW_X |
 248                         XCB_CONFIG_WINDOW_Y |
 249                         XCB_CONFIG_WINDOW_WIDTH |
 250                         XCB_CONFIG_WINDOW_HEIGHT;
 251         Rect *rect = &(client->child_rect);
 252         switch ((client->container != NULL ? client->container->mode : MODE_DEFAULT)) {
 253                 case MODE_STACK:
 254                 case MODE_TABBED:
 255                         rect->x = 2;
 256                         rect->y = 0;
 257                         rect->width = client->rect.width - (2 + 2);
 258                         rect->height = client->rect.height - 2;
 259                         break;
 260                 default:
 261                         if (client->titlebar_position == TITLEBAR_OFF && client->borderless) {
 262                                 rect->x = 0;
 263                                 rect->y = 0;
 264                                 rect->width = client->rect.width;
 265                                 rect->height = client->rect.height;
 266                         } else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) {
 267                                 rect->x = 1;
 268                                 rect->y = 1;
 269                                 rect->width = client->rect.width - 1 - 1;
 270                                 rect->height = client->rect.height - 1 - 1;
 271                         } else {
 272                                 rect->x = 2;
 273                                 rect->y = font->height + 2 + 2;
 274                                 rect->width = client->rect.width - (2 + 2);
 275                                 rect->height = client->rect.height - ((font->height + 2 + 2) + 2);
 276                         }
 277                         break;
 278         }
 279
 280         /* Obey the ratio, if any */
 281         if (client->proportional_height != 0 &&
 282             client->proportional_width != 0) {
 283                 LOG("proportional height = %d, width = %d\n", client->proportional_height, client->proportional_width);
 284                 double new_height = rect->height + 1;
 285                 int new_width = rect->width;
 286
 287                 while (new_height > rect->height) {
 288                         new_height = ((double)client->proportional_height / client->proportional_width) * new_width;
 289
 290                         if (new_height > rect->height)
 291                                 new_width--;
 292                 }
 293                 /* Center the window */
 294                 rect->y += ceil(rect->height / 2) - floor(new_height / 2);
 295                 rect->x += ceil(rect->width / 2) - floor(new_width / 2);
 296
 297                 rect->height = new_height;
 298                 rect->width = new_width;
 299                 LOG("new_height = %f, new_width = %d\n", new_height, new_width);
 300         }
 301
 302         if (client->height_increment > 1) {
 303                 int old_height = rect->height;
 304                 rect->height -= (rect->height - client->base_height) % client->height_increment;
 305                 LOG("Lost %d pixel due to client's height_increment (%d px)\n",
 306                     old_height - rect->height, client->height_increment);
 307         }
 308
 309         if (client->width_increment > 1) {
 310                 int old_width = rect->width;
 311                 rect->width -= (rect->width - client->base_width) % client->width_increment;
 312                 LOG("Lost %d pixel due to client's width_increment (%d px)\n",
 313                     old_width - rect->width, client->width_increment);
 314         }
 315
 316         LOG("child will be at %dx%d with size %dx%d\n", rect->x, rect->y, rect->width, rect->height);
 317
 318         xcb_configure_window(conn, client->child, mask, &(rect->x));
 319
 320         /* After configuring a child window we need to fake a configure_notify_event (see ICCCM 4.2.3).
 321          * This is necessary to inform the client of its position relative to the root window,
 322          * not relative to its frame (as done in the configure_notify_event by the x server). */
 323         fake_absolute_configure_notify(conn, client);
 324
 325         /* Force redrawing after resizing the window because any now lost
 326          * pixels could contain old garbage. */
 327         xcb_expose_event_t generated;
 328         generated.window = client->frame;
 329         generated.count = 0;
 330         handle_expose_event(NULL, conn, &generated);
 331 }
 332
 333 /*
 334  * Renders the given container. Is called by render_layout() or individually (for example
 335  * when focus changes in a stacking container)
 336  *
 337  */
 338 void render_container(xcb_connection_t *conn, Container *container) {
 339         Client *client;
 340         int num_clients = 0, current_client = 0;
 341
 342         CIRCLEQ_FOREACH(client, &(container->clients), clients)
 343                 num_clients++;
 344
 345         if (container->mode == MODE_DEFAULT) {
 346                 CIRCLEQ_FOREACH(client, &(container->clients), clients) {
 347                         /* If the client is in fullscreen mode, it does not get reconfigured */
 348                         if (container->workspace->fullscreen_client == client) {
 349                                 current_client++;
 350                                 continue;
 351                         }
 352
 353                         /* Check if we changed client->x or client->y by updating it.
 354                          * Note the bitwise OR instead of logical OR to force evaluation of both statements */
 355                         if (client->force_reconfigure |
 356                             update_if_necessary(&(client->rect.x), container->x) |
 357                             update_if_necessary(&(client->rect.y), container->y +
 358                                         (container->height / num_clients) * current_client) |
 359                             update_if_necessary(&(client->rect.width), container->width) |
 360                             update_if_necessary(&(client->rect.height), container->height / num_clients))
 361                                 resize_client(conn, client);
 362
 363                         /* TODO: vertical default layout */
 364
 365                         client->force_reconfigure = false;
 366
 367                         current_client++;
 368                 }
 369         } else {
 370                 i3Font *font = load_font(conn, config.font);
 371                 int decoration_height = (font->height + 2 + 2);
 372                 struct Stack_Window *stack_win = &(container->stack_win);
 373                 /* The size for each tab (width), necessary as a separate variable
 374                  * because num_clients gets fixed to 1 in tabbed mode. */
 375                 int size_each = (num_clients == 0 ? container->width : container->width / num_clients);
 376
 377                 /* Check if we need to remap our stack title window, it gets unmapped when the container
 378                    is empty in src/handlers.c:unmap_notify() */
 379                 if (stack_win->rect.height == 0 && num_clients > 0) {
 380                         LOG("remapping stack win\n");
 381                         xcb_map_window(conn, stack_win->window);
 382                 } else LOG("not remapping stackwin, height = %d, num_clients = %d\n",
 383                                 stack_win->rect.height, num_clients);
 384
 385                 if (container->mode == MODE_TABBED) {
 386                         /* By setting num_clients to 1 we force that the stack window will be only one line
 387                          * high. The rest of the code is useful in both cases. */
 388                         LOG("tabbed mode, setting num_clients = 1\n");
 389                         if (num_clients > 1)
 390                                 num_clients = 1;
 391                 }
 392
 393                 /* Check if we need to reconfigure our stack title window */
 394                 if (update_if_necessary(&(stack_win->rect.x), container->x) |
 395                     update_if_necessary(&(stack_win->rect.y), container->y) |
 396                     update_if_necessary(&(stack_win->rect.width), container->width) |
 397                     update_if_necessary(&(stack_win->rect.height), decoration_height * num_clients)) {
 398
 399                         /* Configuration can happen in two slightly different ways:
 400
 401                            If there is no client in fullscreen mode, 5 parameters are passed
 402                            (x, y, width, height, stack mode is set to above which means top-most position).
 403
 404                            If there is a fullscreen client, the fourth parameter is set to to the
 405                            fullscreen window as sibling and the stack mode is set to below, which means
 406                            that the stack_window will be placed just below the sibling, that is, under
 407                            the fullscreen window.
 408                          */
 409                         uint32_t values[] = { stack_win->rect.x, stack_win->rect.y,
 410                                               stack_win->rect.width, stack_win->rect.height,
 411                                               XCB_STACK_MODE_ABOVE, XCB_STACK_MODE_BELOW };
 412                         uint32_t mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y |
 413                                         XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT |
 414                                         XCB_CONFIG_WINDOW_STACK_MODE;
 415
 416                         /* Raise the stack window, but keep it below the first floating client
 417                          * and below the fullscreen client (if any) */
 418                         Client *first_floating = TAILQ_FIRST(&(container->workspace->floating_clients));
 419                         if (first_floating != TAILQ_END(&(container->workspace->floating_clients))) {
 420                                 mask |= XCB_CONFIG_WINDOW_SIBLING;
 421                                 values[4] = first_floating->frame;
 422                         } else if (container->workspace->fullscreen_client != NULL) {
 423                                 mask |= XCB_CONFIG_WINDOW_SIBLING;
 424                                 values[4] = container->workspace->fullscreen_client->frame;
 425                         }
 426
 427                         xcb_configure_window(conn, stack_win->window, mask, values);
 428                 }
 429
 430                 /* Prepare the pixmap for usage */
 431                 cached_pixmap_prepare(conn, &(stack_win->pixmap));
 432
 433                 /* Render the decorations of all clients */
 434                 CIRCLEQ_FOREACH(client, &(container->clients), clients) {
 435                         /* If the client is in fullscreen mode, it does not get reconfigured */
 436                         if (container->workspace->fullscreen_client == client) {
 437                                 current_client++;
 438                                 continue;
 439                         }
 440
 441                         /* Check if we changed client->x or client->y by updating it.
 442                          * Note the bitwise OR instead of logical OR to force evaluation of all statements */
 443                         if (client->force_reconfigure |
 444                             update_if_necessary(&(client->rect.x), container->x) |
 445                             update_if_necessary(&(client->rect.y), container->y + (decoration_height * num_clients)) |
 446                             update_if_necessary(&(client->rect.width), container->width) |
 447                             update_if_necessary(&(client->rect.height), container->height - (decoration_height * num_clients)))
 448                                 resize_client(conn, client);
 449
 450                         client->force_reconfigure = false;
 451
 452                         int offset_x = 0;
 453                         int offset_y = 0;
 454                         if (container->mode == MODE_STACK)
 455                                 offset_y = current_client++ * decoration_height;
 456                         else if (container->mode == MODE_TABBED)
 457                                 offset_x = current_client++ * size_each;
 458                         decorate_window(conn, client, stack_win->pixmap.id, stack_win->pixmap.gc,
 459                                         offset_x, offset_y);
 460                 }
 461
 462                 xcb_copy_area(conn, stack_win->pixmap.id, stack_win->window, stack_win->pixmap.gc,
 463                               0, 0, 0, 0, stack_win->rect.width, stack_win->rect.height);
 464         }
 465 }
 466
 467 static void render_bars(xcb_connection_t *conn, Workspace *r_ws, int width, int *height) {
 468         Client *client;
 469         SLIST_FOREACH(client, &(r_ws->screen->dock_clients), dock_clients) {
 470                 LOG("client is at %d, should be at %d\n", client->rect.y, *height);
 471                 if (client->force_reconfigure |
 472                     update_if_necessary(&(client->rect.x), r_ws->rect.x) |
 473                     update_if_necessary(&(client->rect.y), *height))
 474                         reposition_client(conn, client);
 475
 476                 if (client->force_reconfigure |
 477                     update_if_necessary(&(client->rect.width), width) |
 478                     update_if_necessary(&(client->rect.height), client->desired_height))
 479                         resize_client(conn, client);
 480
 481                 client->force_reconfigure = false;
 482                 LOG("desired_height = %d\n", client->desired_height);
 483                 *height += client->desired_height;
 484         }
 485 }
 486
 487 static void render_internal_bar(xcb_connection_t *conn, Workspace *r_ws, int width, int height) {
 488         i3Font *font = load_font(conn, config.font);
 489         i3Screen *screen = r_ws->screen;
 490         enum { SET_NORMAL = 0, SET_FOCUSED = 1 };
 491
 492         /* Fill the whole bar in black */
 493         xcb_change_gc_single(conn, screen->bargc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
 494         xcb_rectangle_t rect = {0, 0, width, height};
 495         xcb_poly_fill_rectangle(conn, screen->bar, screen->bargc, 1, &rect);
 496
 497         /* Set font */
 498         xcb_change_gc_single(conn, screen->bargc, XCB_GC_FONT, font->id);
 499
 500         int drawn = 0;
 501         for (int c = 0; c < 10; c++) {
 502                 if (workspaces[c].screen != screen)
 503                         continue;
 504
 505                 struct Colortriple *color = (screen->current_workspace == c ? &(config.bar.focused) :
 506                                              &(config.bar.unfocused));
 507                 Workspace *ws = &workspaces[c];
 508
 509                 /* Draw the outer rect */
 510                 xcb_draw_rect(conn, screen->bar, screen->bargc, color->border,
 511                               drawn,              /* x */
 512                               1,                  /* y */
 513                               ws->text_width + 5 + 5, /* width = text width + 5 px left + 5px right */
 514                               height - 2          /* height = max. height - 1 px upper and 1 px bottom border */);
 515
 516                 /* Draw the background of this rect */
 517                 xcb_draw_rect(conn, screen->bar, screen->bargc, color->background,
 518                               drawn + 1,
 519                               2,
 520                               ws->text_width + 4 + 4,
 521                               height - 4);
 522
 523                 xcb_change_gc_single(conn, screen->bargc, XCB_GC_FOREGROUND, color->text);
 524                 xcb_change_gc_single(conn, screen->bargc, XCB_GC_BACKGROUND, color->background);
 525                 xcb_image_text_16(conn, ws->name_len, screen->bar, screen->bargc, drawn + 5 /* X */,
 526                                   font->height + 1 /* Y = baseline of font */,
 527                                   (xcb_char2b_t*)ws->name);
 528                 drawn += ws->text_width + 12;
 529         }
 530 }
 531
 532 /*
 533  * Modifies the event mask of all clients on the given workspace to either ignore or to handle
 534  * enter notifies. It is handy to ignore notifies because they will be sent when a window is mapped
 535  * under the cursor, thus when the user didn’t enter the window actively at all.
 536  *
 537  */
 538 void ignore_enter_notify_forall(xcb_connection_t *conn, Workspace *workspace, bool ignore_enter_notify) {
 539         Client *client;
 540         uint32_t values[1];
 541
 542         FOR_TABLE(workspace)
 543                 CIRCLEQ_FOREACH(client, &(workspace->table[cols][rows]->clients), clients) {
 544                         /* Change event mask for the decorations */
 545                         values[0] = FRAME_EVENT_MASK;
 546                         if (ignore_enter_notify)
 547                                 values[0] &= ~(XCB_EVENT_MASK_ENTER_WINDOW);
 548                         xcb_change_window_attributes(conn, client->frame, XCB_CW_EVENT_MASK, values);
 549
 550                         /* Change event mask for the child itself */
 551                         values[0] = CHILD_EVENT_MASK;
 552                         if (ignore_enter_notify)
 553                                 values[0] &= ~(XCB_EVENT_MASK_ENTER_WINDOW);
 554                         xcb_change_window_attributes(conn, client->child, XCB_CW_EVENT_MASK, values);
 555                 }
 556 }
 557
 558 /*
 559  * Renders the given workspace on the given screen
 560  *
 561  */
 562 void render_workspace(xcb_connection_t *conn, i3Screen *screen, Workspace *r_ws) {
 563         i3Font *font = load_font(conn, config.font);
 564         int width = r_ws->rect.width;
 565         int height = r_ws->rect.height;
 566
 567         /* Reserve space for dock clients */
 568         Client *client;
 569         SLIST_FOREACH(client, &(screen->dock_clients), dock_clients)
 570                 height -= client->desired_height;
 571
 572         /* Space for the internal bar */
 573         height -= (font->height + 6);
 574
 575         int xoffset[r_ws->rows];
 576         int yoffset[r_ws->cols];
 577         /* Initialize offsets */
 578         for (int cols = 0; cols < r_ws->cols; cols++)
 579                 yoffset[cols] = r_ws->rect.y;
 580         for (int rows = 0; rows < r_ws->rows; rows++)
 581                 xoffset[rows] = r_ws->rect.x;
 582
 583         ignore_enter_notify_forall(conn, r_ws, true);
 584
 585         /* Go through the whole table and render what’s necessary */
 586         FOR_TABLE(r_ws) {
 587                 Container *container = r_ws->table[cols][rows];
 588                 int single_width = -1, single_height;
 589                 /* Update position of the container */
 590                 container->row = rows;
 591                 container->col = cols;
 592                 container->x = xoffset[rows];
 593                 container->y = yoffset[cols];
 594                 container->width = 0;
 595
 596                 for (int c = 0; c < container->colspan; c++) {
 597                         if (r_ws->width_factor[cols+c] == 0)
 598                                 container->width += (width / r_ws->cols);
 599                         else container->width += get_unoccupied_x(r_ws) * r_ws->width_factor[cols+c];
 600
 601                         if (single_width == -1)
 602                                 single_width = container->width;
 603                 }
 604
 605                 //if (container->height_factor == 0)
 606                         container->height = (height / r_ws->rows);
 607                 //else container->height = get_unoccupied_y(r_ws, cols) * container->height_factor;
 608                 single_height = container->height;
 609                 container->height *= container->rowspan;
 610
 611                 /* Render the container if it is not empty */
 612                 render_container(conn, container);
 613
 614                 xoffset[rows] += single_width;
 615                 yoffset[cols] += single_height;
 616         }
 617
 618         ignore_enter_notify_forall(conn, r_ws, false);
 619
 620         render_bars(conn, r_ws, width, &height);
 621         render_internal_bar(conn, r_ws, width, font->height + 6);
 622 }
 623
 624 /*
 625  * Renders the whole layout, that is: Go through each screen, each workspace, each container
 626  * and render each client. This also renders the bars.
 627  *
 628  * If you don’t need to render *everything*, you should call render_container on the container
 629  * you want to refresh.
 630  *
 631  */
 632 void render_layout(xcb_connection_t *conn) {
 633         i3Screen *screen;
 634
 635         TAILQ_FOREACH(screen, virtual_screens, screens)
 636                 render_workspace(conn, screen, &(workspaces[screen->current_workspace]));
 637
 638         xcb_flush(conn);
 639 }