2 #define I3__FILE__ "x.c"
4 * vim:ts=4:sw=4:expandtab
6 * i3 - an improved dynamic tiling window manager
7 * © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
9 * x.c: Interface to X11, transfers our in-memory state to X11 (see also
10 * render.c). Basically a big state machine.
15 /* Stores the X11 window ID of the currently focused window */
16 xcb_window_t focused_id = XCB_NONE;
18 /* Because 'focused_id' might be reset to force input focus (after click to
19 * raise), we separately keep track of the X11 window ID to be able to always
20 * tell whether the focused window actually changed. */
21 static xcb_window_t last_focused = XCB_NONE;
23 /* The bottom-to-top window stack of all windows which are managed by i3.
24 * Used for x_get_window_stack(). */
25 static xcb_window_t *btt_stack;
26 static int btt_stack_num;
28 /* Stores coordinates to warp mouse pointer to if set */
32 * Describes the X11 state we may modify (map state, position, window stack).
33 * There is one entry per container. The state represents the current situation
34 * as X11 sees it (with the exception of the order in the state_head CIRCLEQ,
35 * which represents the order that will be pushed to X11, while old_state_head
36 * represents the current order). It will be updated in x_push_changes().
39 typedef struct con_state {
45 /** The con for which this state is. */
48 /* For reparenting, we have a flag (need_reparent) and the X ID of the old
49 * frame this window was in. The latter is necessary because we need to
50 * ignore UnmapNotify events (by changing the window event mask). */
52 xcb_window_t old_frame;
61 CIRCLEQ_ENTRY(con_state) state;
62 CIRCLEQ_ENTRY(con_state) old_state;
65 CIRCLEQ_HEAD(state_head, con_state) state_head =
66 CIRCLEQ_HEAD_INITIALIZER(state_head);
68 CIRCLEQ_HEAD(old_state_head, con_state) old_state_head =
69 CIRCLEQ_HEAD_INITIALIZER(old_state_head);
72 * Returns the container state for the given frame. This function always
73 * returns a container state (otherwise, there is a bug in the code and the
74 * container state of a container for which x_con_init() was not called was
78 static con_state *state_for_frame(xcb_window_t window) {
80 CIRCLEQ_FOREACH(state, &state_head, state)
81 if (state->id == window)
84 /* TODO: better error handling? */
85 ELOG("No state found\n");
91 * Initializes the X11 part for the given container. Called exactly once for
92 * every container from con_new().
95 void x_con_init(Con *con, uint16_t depth) {
96 /* TODO: maybe create the window when rendering first? we could then even
97 * get the initial geometry right */
102 xcb_visualid_t visual = XCB_COPY_FROM_PARENT;
103 xcb_colormap_t win_colormap = XCB_NONE;
104 if (depth != root_depth && depth != XCB_COPY_FROM_PARENT) {
105 /* For custom visuals, we need to create a colormap before creating
106 * this window. It will be freed directly after creating the window. */
107 visual = get_visualid_by_depth(depth);
108 win_colormap = xcb_generate_id(conn);
109 xcb_create_colormap_checked(conn, XCB_COLORMAP_ALLOC_NONE, win_colormap, root, visual);
111 /* We explicitly set a background color and border color (even though we
112 * don’t even have a border) because the X11 server requires us to when
113 * using 32 bit color depths, see
114 * http://stackoverflow.com/questions/3645632 */
115 mask |= XCB_CW_BACK_PIXEL;
116 values[0] = root_screen->black_pixel;
118 mask |= XCB_CW_BORDER_PIXEL;
119 values[1] = root_screen->black_pixel;
121 /* our own frames should not be managed */
122 mask |= XCB_CW_OVERRIDE_REDIRECT;
125 /* see include/xcb.h for the FRAME_EVENT_MASK */
126 mask |= XCB_CW_EVENT_MASK;
127 values[3] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
129 mask |= XCB_CW_COLORMAP;
130 values[4] = win_colormap;
132 /* our own frames should not be managed */
133 mask = XCB_CW_OVERRIDE_REDIRECT;
136 /* see include/xcb.h for the FRAME_EVENT_MASK */
137 mask |= XCB_CW_EVENT_MASK;
138 values[1] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
140 mask |= XCB_CW_COLORMAP;
141 values[2] = colormap;
144 Rect dims = { -15, -15, 10, 10 };
145 con->frame = create_window(conn, dims, depth, visual, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values);
147 if (win_colormap != XCB_NONE)
148 xcb_free_colormap(conn, win_colormap);
150 struct con_state *state = scalloc(sizeof(struct con_state));
151 state->id = con->frame;
152 state->mapped = false;
153 state->initial = true;
154 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
155 CIRCLEQ_INSERT_HEAD(&old_state_head, state, old_state);
156 DLOG("adding new state for window id 0x%08x\n", state->id);
160 * Re-initializes the associated X window state for this container. You have
161 * to call this when you assign a client to an empty container to ensure that
162 * its state gets updated correctly.
165 void x_reinit(Con *con) {
166 struct con_state *state;
168 if ((state = state_for_frame(con->frame)) == NULL) {
169 ELOG("window state not found\n");
173 DLOG("resetting state %p to initial\n", state);
174 state->initial = true;
175 state->child_mapped = false;
177 memset(&(state->window_rect), 0, sizeof(Rect));
181 * Reparents the child window of the given container (necessary for sticky
182 * containers). The reparenting happens in the next call of x_push_changes().
185 void x_reparent_child(Con *con, Con *old) {
186 struct con_state *state;
187 if ((state = state_for_frame(con->frame)) == NULL) {
188 ELOG("window state for con not found\n");
192 state->need_reparent = true;
193 state->old_frame = old->frame;
197 * Moves a child window from Container src to Container dest.
200 void x_move_win(Con *src, Con *dest) {
201 struct con_state *state_src, *state_dest;
203 if ((state_src = state_for_frame(src->frame)) == NULL) {
204 ELOG("window state for src not found\n");
208 if ((state_dest = state_for_frame(dest->frame)) == NULL) {
209 ELOG("window state for dest not found\n");
213 state_dest->con = state_src->con;
214 state_src->con = NULL;
216 Rect zero = { 0, 0, 0, 0 };
217 if (memcmp(&(state_dest->window_rect), &(zero), sizeof(Rect)) == 0) {
218 memcpy(&(state_dest->window_rect), &(state_src->window_rect), sizeof(Rect));
219 DLOG("COPYING RECT\n");
224 * Kills the window decoration associated with the given container.
227 void x_con_kill(Con *con) {
230 xcb_destroy_window(conn, con->frame);
231 xcb_free_pixmap(conn, con->pixmap);
232 xcb_free_gc(conn, con->pm_gc);
233 state = state_for_frame(con->frame);
234 CIRCLEQ_REMOVE(&state_head, state, state);
235 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
239 /* Invalidate focused_id to correctly focus new windows with the same ID */
240 focused_id = last_focused = XCB_NONE;
244 * Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW)
247 bool window_supports_protocol(xcb_window_t window, xcb_atom_t atom) {
248 xcb_get_property_cookie_t cookie;
249 xcb_icccm_get_wm_protocols_reply_t protocols;
252 cookie = xcb_icccm_get_wm_protocols(conn, window, A_WM_PROTOCOLS);
253 if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1)
256 /* Check if the client’s protocols have the requested atom set */
257 for (uint32_t i = 0; i < protocols.atoms_len; i++)
258 if (protocols.atoms[i] == atom)
261 xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
267 * Kills the given X11 window using WM_DELETE_WINDOW (if supported).
270 void x_window_kill(xcb_window_t window, kill_window_t kill_window) {
271 /* if this window does not support WM_DELETE_WINDOW, we kill it the hard way */
272 if (!window_supports_protocol(window, A_WM_DELETE_WINDOW)) {
273 if (kill_window == KILL_WINDOW) {
274 LOG("Killing specific window 0x%08x\n", window);
275 xcb_destroy_window(conn, window);
277 LOG("Killing the X11 client which owns window 0x%08x\n", window);
278 xcb_kill_client(conn, window);
283 /* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
284 * In order to properly initialize these bytes, we allocate 32 bytes even
285 * though we only need less for an xcb_configure_notify_event_t */
286 void *event = scalloc(32);
287 xcb_client_message_event_t *ev = event;
289 ev->response_type = XCB_CLIENT_MESSAGE;
291 ev->type = A_WM_PROTOCOLS;
293 ev->data.data32[0] = A_WM_DELETE_WINDOW;
294 ev->data.data32[1] = XCB_CURRENT_TIME;
296 LOG("Sending WM_DELETE to the client\n");
297 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char*)ev);
303 * Draws the decoration of the given container onto its parent.
306 void x_draw_decoration(Con *con) {
307 Con *parent = con->parent;
308 bool leaf = con_is_leaf(con);
310 /* This code needs to run for:
312 * • non-leaf containers which are in a stacked/tabbed container
314 * It does not need to run for:
315 * • direct children of outputs or dockareas
316 * • floating containers (they don’t have a decoration)
319 parent->layout != L_STACKED &&
320 parent->layout != L_TABBED) ||
321 parent->type == CT_OUTPUT ||
322 parent->type == CT_DOCKAREA ||
323 con->type == CT_FLOATING_CON)
326 /* Skip containers whose height is 0 (for example empty dockareas) */
327 if (con->rect.height == 0)
330 /* Skip containers whose pixmap has not yet been created (can happen when
331 * decoration rendering happens recursively for a window for which
332 * x_push_node() was not yet called) */
333 if (leaf && con->pixmap == XCB_NONE)
336 /* 1: build deco_params and compare with cache */
337 struct deco_render_params *p = scalloc(sizeof(struct deco_render_params));
339 /* find out which colors to use */
341 p->color = &config.client.urgent;
342 else if (con == focused || con_inside_focused(con))
343 p->color = &config.client.focused;
344 else if (con == TAILQ_FIRST(&(parent->focus_head)))
345 p->color = &config.client.focused_inactive;
347 p->color = &config.client.unfocused;
349 p->border_style = con_border_style(con);
351 Rect *r = &(con->rect);
352 Rect *w = &(con->window_rect);
353 p->con_rect = (struct width_height){ r->width, r->height };
354 p->con_window_rect = (struct width_height){ w->width, w->height };
355 p->con_deco_rect = con->deco_rect;
356 p->background = config.client.background;
357 p->con_is_leaf = con_is_leaf(con);
358 p->parent_layout = con->parent->layout;
360 if (con->deco_render_params != NULL &&
361 (con->window == NULL || !con->window->name_x_changed) &&
362 !parent->pixmap_recreated &&
363 !con->pixmap_recreated &&
364 memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) {
370 while ((next = TAILQ_NEXT(next, nodes))) {
371 FREE(next->deco_render_params);
374 FREE(con->deco_render_params);
375 con->deco_render_params = p;
377 if (con->window != NULL && con->window->name_x_changed)
378 con->window->name_x_changed = false;
380 parent->pixmap_recreated = false;
381 con->pixmap_recreated = false;
383 /* 2: draw the client.background, but only for the parts around the client_rect */
384 if (con->window != NULL) {
385 xcb_rectangle_t background[] = {
387 { 0, 0, r->width, w->y },
389 { 0, (w->y + w->height), r->width, r->height - (w->y + w->height) },
391 { 0, 0, w->x, r->height },
393 { w->x + w->width, 0, r->width - (w->x + w->width), r->height }
396 for (int i = 0; i < 4; i++)
397 DLOG("rect is (%d, %d) with %d x %d\n",
405 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]) { config.client.background });
406 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background);
409 /* 3: draw a rectangle in border color around the client */
410 if (p->border_style != BS_NONE && p->con_is_leaf) {
411 /* We might hide some borders adjacent to the screen-edge */
412 adjacent_t borders_to_hide = ADJ_NONE;
413 borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
415 Rect br = con_border_style_rect(con);
417 DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height);
418 DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height);
419 DLOG("window_rect spans (%d, %d) with %d x %d\n", con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
422 /* These rectangles represents the border around the child window
423 * (left, bottom and right part). We don’t just fill the whole
424 * rectangle because some childs are not freely resizable and we want
425 * their background color to "shine through". */
426 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
427 if (!(borders_to_hide & ADJ_LEFT_SCREEN_EDGE)) {
428 xcb_rectangle_t leftline = { 0, 0, br.x, r->height };
429 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &leftline);
431 if (!(borders_to_hide & ADJ_RIGHT_SCREEN_EDGE)) {
432 xcb_rectangle_t rightline = { r->width + br.width + br.x, 0, r->width, r->height };
433 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &rightline);
435 if (!(borders_to_hide & ADJ_LOWER_SCREEN_EDGE)) {
436 xcb_rectangle_t bottomline = { 0, r->height + br.height + br.y, r->width, r->height };
437 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &bottomline);
439 /* 1pixel border needs an additional line at the top */
440 if (p->border_style == BS_PIXEL && !(borders_to_hide & ADJ_UPPER_SCREEN_EDGE)) {
441 xcb_rectangle_t topline = { br.x, 0, con->rect.width + br.width + br.x, br.y };
442 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline);
445 /* Highlight the side of the border at which the next window will be
446 * opened if we are rendering a single window within a split container
447 * (which is undistinguishable from a single window outside a split
448 * container otherwise. */
449 if (TAILQ_NEXT(con, nodes) == NULL &&
450 TAILQ_PREV(con, nodes_head, nodes) == NULL &&
451 con->parent->type != CT_FLOATING_CON) {
452 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->indicator });
453 if (p->parent_layout == L_SPLITH)
454 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
455 { r->width + br.width + br.x, br.y, r->width, r->height + br.height } });
456 else if (p->parent_layout == L_SPLITV)
457 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
458 { br.x, r->height + br.height + br.y, r->width - (2 * br.x), r->height } });
463 /* if this is a borderless/1pixel window, we don’t need to render the
465 if (p->border_style != BS_NORMAL)
468 /* 4: paint the bar */
469 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
470 xcb_rectangle_t drect = { con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height };
471 xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect);
473 /* 5: draw two unconnected horizontal lines in border color */
474 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
475 Rect *dr = &(con->deco_rect);
478 if (parent->layout == L_TABBED) {
479 if (TAILQ_PREV(con, nodes_head, nodes) != NULL)
481 if (TAILQ_NEXT(con, nodes) != NULL)
484 xcb_segment_t segments[] = {
486 dr->x + dr->width - 1, dr->y },
488 { dr->x + deco_diff_l, dr->y + dr->height - 1,
489 dr->x - deco_diff_r + dr->width - 1, dr->y + dr->height - 1 }
491 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
493 /* 6: draw the title */
494 set_font_colors(parent->pm_gc, p->color->text, p->color->background);
495 int text_offset_y = (con->deco_rect.height - config.font.height) / 2;
497 struct Window *win = con->window;
499 /* we have a split container which gets a representation
500 * of its children as title
503 char *tree = con_get_tree_representation(con);
504 sasprintf(&title, "i3: %s", tree);
507 draw_text_ascii(title,
508 parent->pixmap, parent->pm_gc,
509 con->deco_rect.x + 2, con->deco_rect.y + text_offset_y,
510 con->deco_rect.width - 2);
516 if (win->name == NULL)
519 int indent_level = 0,
521 Con *il_parent = parent;
522 if (il_parent->layout != L_STACKED) {
524 //DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout);
525 if (il_parent->layout == L_STACKED)
527 if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT)
529 il_parent = il_parent->parent;
533 //DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult);
534 int indent_px = (indent_level * 5) * indent_mult;
537 parent->pixmap, parent->pm_gc,
538 con->deco_rect.x + 2 + indent_px, con->deco_rect.y + text_offset_y,
539 con->deco_rect.width - 2 - indent_px);
542 /* Since we don’t clip the text at all, it might in some cases be painted
543 * on the border pixels on the right side of a window. Therefore, we draw
544 * the right border again after rendering the text (and the unconnected
545 * lines in border color). */
547 /* Draw a 1px separator line before and after every tab, so that tabs can
548 * be easily distinguished. */
549 if (parent->layout == L_TABBED) {
550 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
552 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
554 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, parent->pixmap, parent->pm_gc, 6,
556 { dr->x + dr->width, dr->y },
557 { dr->x + dr->width, dr->y + dr->height },
558 { dr->x + dr->width - 1, dr->y },
559 { dr->x + dr->width - 1, dr->y + dr->height },
560 { dr->x, dr->y + dr->height },
564 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
565 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
568 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
572 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
573 * because x_push_node uses focus order to recurse (see the comment above)
574 * while drawing the decoration needs to happen in the actual order.
577 void x_deco_recurse(Con *con) {
579 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
580 TAILQ_EMPTY(&(con->floating_head));
581 con_state *state = state_for_frame(con->frame);
584 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
585 x_deco_recurse(current);
587 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
588 x_deco_recurse(current);
591 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
594 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
595 (!leaf || con->mapped))
596 x_draw_decoration(con);
600 * This function pushes the properties of each node of the layout tree to
601 * X11 if they have changed (like the map state, position of the window, …).
602 * It recursively traverses all children of the given node.
605 void x_push_node(Con *con) {
608 Rect rect = con->rect;
610 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
611 state = state_for_frame(con->frame);
613 if (state->name != NULL) {
614 DLOG("pushing name %s for con %p\n", state->name, con);
616 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
617 XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
621 if (con->window == NULL) {
622 /* Calculate the height of all window decorations which will be drawn on to
624 uint32_t max_y = 0, max_height = 0;
625 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
626 Rect *dr = &(current->deco_rect);
627 if (dr->y >= max_y && dr->height >= max_height) {
629 max_height = dr->height;
632 rect.height = max_y + max_height;
633 if (rect.height == 0)
637 /* reparent the child window (when the window was moved due to a sticky
639 if (state->need_reparent && con->window != NULL) {
640 DLOG("Reparenting child window\n");
642 /* Temporarily set the event masks to XCB_NONE so that we won’t get
643 * UnmapNotify events (otherwise the handler would close the container).
644 * These events are generated automatically when reparenting. */
645 uint32_t values[] = { XCB_NONE };
646 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
647 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
649 xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
651 values[0] = FRAME_EVENT_MASK;
652 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
653 values[0] = CHILD_EVENT_MASK;
654 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
656 state->old_frame = XCB_NONE;
657 state->need_reparent = false;
660 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
661 con, con->window->id, con->ignore_unmap);
664 bool fake_notify = false;
665 /* Set new position if rect changed (and if height > 0) */
666 if (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
668 /* We first create the new pixmap, then render to it, set it as the
669 * background and only afterwards change the window size. This reduces
672 /* As the pixmap only depends on the size and not on the position, it
673 * is enough to check if width/height have changed. Also, we don’t
674 * create a pixmap at all when the window is actually not visible
675 * (height == 0) or when it is not needed. */
676 bool has_rect_changed = (state->rect.width != rect.width || state->rect.height != rect.height);
678 /* The pixmap of a borderless leaf container will not be used except
679 * for the titlebar in a stack or tabs (issue #1013). */
680 bool is_pixmap_needed = (con->border_style != BS_NONE ||
682 con->parent->layout == L_STACKED ||
683 con->parent->layout == L_TABBED);
685 /* Check if the container has an unneeded pixmap left over from
686 * previously having a border or titlebar. */
687 if (!is_pixmap_needed && con->pixmap != XCB_NONE) {
688 xcb_free_pixmap(conn, con->pixmap);
689 con->pixmap = XCB_NONE;
692 if (has_rect_changed && is_pixmap_needed) {
693 if (con->pixmap == 0) {
694 con->pixmap = xcb_generate_id(conn);
695 con->pm_gc = xcb_generate_id(conn);
697 xcb_free_pixmap(conn, con->pixmap);
698 xcb_free_gc(conn, con->pm_gc);
701 uint16_t win_depth = root_depth;
703 win_depth = con->window->depth;
705 xcb_create_pixmap(conn, win_depth, con->pixmap, con->frame, rect.width, rect.height);
707 /* For the graphics context, we disable GraphicsExposure events.
708 * Those will be sent when a CopyArea request cannot be fulfilled
709 * properly due to parts of the source being unmapped or otherwise
710 * unavailable. Since we always copy from pixmaps to windows, this
711 * is not a concern for us. */
712 uint32_t values[] = { 0 };
713 xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
715 con->pixmap_recreated = true;
717 /* Don’t render the decoration for windows inside a stack which are
718 * not visible right now */
720 con->parent->layout != L_STACKED ||
721 TAILQ_FIRST(&(con->parent->focus_head)) == con)
722 /* Render the decoration now to make the correct decoration visible
723 * from the very first moment. Later calls will be cached, so this
724 * doesn’t hurt performance. */
728 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
729 /* flush to ensure that the following commands are sent in a single
730 * buffer and will be processed directly afterwards (the contents of a
731 * window get lost when resizing it, therefore we want to provide it as
732 * fast as possible) */
734 xcb_set_window_rect(conn, con->frame, rect);
735 if (con->pixmap != XCB_NONE)
736 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
739 memcpy(&(state->rect), &rect, sizeof(Rect));
743 /* dito, but for child windows */
744 if (con->window != NULL &&
745 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
746 DLOG("setting window rect (%d, %d, %d, %d)\n",
747 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
748 xcb_set_window_rect(conn, con->window->id, con->window_rect);
749 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
753 /* Map if map state changed, also ensure that the child window
754 * is changed if we are mapped and there is a new, unmapped child window.
755 * Unmaps are handled in x_push_node_unmaps(). */
756 if ((state->mapped != con->mapped || (con->window != NULL && !state->child_mapped)) &&
758 xcb_void_cookie_t cookie;
760 if (con->window != NULL) {
761 /* Set WM_STATE_NORMAL because GTK applications don’t want to
762 * drag & drop if we don’t. Also, xprop(1) needs it. */
763 long data[] = { XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE };
764 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
765 A_WM_STATE, A_WM_STATE, 32, 2, data);
769 if (!state->child_mapped && con->window != NULL) {
770 cookie = xcb_map_window(conn, con->window->id);
772 /* We are interested in EnterNotifys as soon as the window is
774 values[0] = CHILD_EVENT_MASK;
775 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
776 DLOG("mapping child window (serial %d)\n", cookie.sequence);
777 state->child_mapped = true;
780 cookie = xcb_map_window(conn, con->frame);
782 values[0] = FRAME_EVENT_MASK;
783 xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
785 /* copy the pixmap contents to the frame window immediately after mapping */
786 if (con->pixmap != XCB_NONE)
787 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
790 DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
791 state->mapped = con->mapped;
794 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
797 DLOG("Sending fake configure notify\n");
798 fake_absolute_configure_notify(con);
801 /* Handle all children and floating windows of this node. We recurse
802 * in focus order to display the focused client in a stack first when
803 * switching workspaces (reduces flickering). */
804 TAILQ_FOREACH(current, &(con->focus_head), focused)
805 x_push_node(current);
809 * Same idea as in x_push_node(), but this function only unmaps windows. It is
810 * necessary to split this up to handle new fullscreen clients properly: The
811 * new window needs to be mapped and focus needs to be set *before* the
812 * underlying windows are unmapped. Otherwise, focus will revert to the
813 * PointerRoot and will then be set to the new window, generating unnecessary
814 * FocusIn/FocusOut events.
817 static void x_push_node_unmaps(Con *con) {
821 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
822 state = state_for_frame(con->frame);
824 /* map/unmap if map state changed, also ensure that the child window
825 * is changed if we are mapped *and* in initial state (meaning the
826 * container was empty before, but now got a child) */
827 if (state->unmap_now) {
828 xcb_void_cookie_t cookie;
829 if (con->window != NULL) {
830 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
831 long data[] = { XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE };
832 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
833 A_WM_STATE, A_WM_STATE, 32, 2, data);
836 cookie = xcb_unmap_window(conn, con->frame);
837 DLOG("unmapping container %p / %s (serial %d)\n", con, con->name, cookie.sequence);
838 /* we need to increase ignore_unmap for this container (if it
839 * contains a window) and for every window "under" this one which
840 * contains a window */
841 if (con->window != NULL) {
843 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
845 state->mapped = con->mapped;
848 /* handle all children and floating windows of this node */
849 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
850 x_push_node_unmaps(current);
852 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
853 x_push_node_unmaps(current);
857 * Returns true if the given container is currently attached to its parent.
859 * TODO: Remove once #1185 has been fixed
861 static bool is_con_attached(Con *con) {
862 if (con->parent == NULL)
866 TAILQ_FOREACH(current, &(con->parent->nodes_head), nodes) {
875 * Pushes all changes (state of each node, see x_push_node() and the window
878 * NOTE: We need to push the stack first so that the windows have the correct
879 * stacking order. This is relevant for workspace switching where we map the
880 * windows because mapping may generate EnterNotify events. When they are
881 * generated in the wrong order, this will cause focus problems when switching
885 void x_push_changes(Con *con) {
887 xcb_query_pointer_cookie_t pointercookie;
889 /* If we need to warp later, we request the pointer position as soon as possible */
891 pointercookie = xcb_query_pointer(conn, root);
894 DLOG("-- PUSHING WINDOW STACK --\n");
895 //DLOG("Disabling EnterNotify\n");
896 uint32_t values[1] = { XCB_NONE };
897 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
899 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
901 //DLOG("Done, EnterNotify disabled\n");
902 bool order_changed = false;
903 bool stacking_changed = false;
905 /* count first, necessary to (re)allocate memory for the bottom-to-top
906 * stack afterwards */
908 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
909 if (state->con && state->con->window)
912 if (cnt != btt_stack_num) {
913 btt_stack = srealloc(btt_stack, sizeof(xcb_window_t) * cnt);
917 xcb_window_t *walk = btt_stack;
919 /* X11 correctly represents the stack if we push it from bottom to top */
920 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
921 if (state->con && state->con->window)
922 memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
924 //DLOG("stack: 0x%08x\n", state->id);
925 con_state *prev = CIRCLEQ_PREV(state, state);
926 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
927 if (prev != old_prev)
928 order_changed = true;
929 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
930 stacking_changed = true;
931 //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
933 mask |= XCB_CONFIG_WINDOW_SIBLING;
934 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
935 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
937 xcb_configure_window(conn, prev->id, mask, values);
939 state->initial = false;
942 /* If we re-stacked something (or a new window appeared), we need to update
943 * the _NET_CLIENT_LIST_STACKING hint */
944 if (stacking_changed)
945 ewmh_update_client_list_stacking(btt_stack, btt_stack_num);
947 DLOG("PUSHING CHANGES\n");
951 xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
953 ELOG("Could not query pointer position, not warping pointer\n");
955 int mid_x = warp_to->x + (warp_to->width / 2);
956 int mid_y = warp_to->y + (warp_to->height / 2);
958 Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
959 Output *target = get_output_containing(mid_x, mid_y);
960 if (current != target) {
961 /* Ignore MotionNotify events generated by warping */
962 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){ XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT });
963 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
964 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){ ROOT_EVENT_MASK });
970 //DLOG("Re-enabling EnterNotify\n");
971 values[0] = FRAME_EVENT_MASK;
972 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
974 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
976 //DLOG("Done, EnterNotify re-enabled\n");
980 xcb_window_t to_focus = focused->frame;
981 if (focused->window != NULL)
982 to_focus = focused->window->id;
984 if (focused_id != to_focus) {
985 if (!focused->mapped) {
986 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
987 /* Invalidate focused_id to correctly focus new windows with the same ID */
988 focused_id = XCB_NONE;
990 bool set_focus = true;
991 if (focused->window != NULL &&
992 focused->window->needs_take_focus) {
993 DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n",
994 to_focus, focused, focused->name);
995 send_take_focus(to_focus, last_timestamp);
996 set_focus = !focused->window->doesnt_accept_focus;
997 DLOG("set_focus = %d\n", set_focus);
999 if (!set_focus && to_focus != last_focused && is_con_attached(focused))
1000 ipc_send_window_event("focus", focused);
1004 DLOG("Updating focus (focused: %p / %s) to X11 window 0x%08x\n", focused, focused->name, to_focus);
1005 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
1006 * no focus change events for our own focus changes. We only want
1007 * these generated by the clients. */
1008 if (focused->window != NULL) {
1009 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
1010 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
1012 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
1013 if (focused->window != NULL) {
1014 values[0] = CHILD_EVENT_MASK;
1015 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
1018 ewmh_update_active_window(to_focus);
1020 if (to_focus != XCB_NONE && to_focus != last_focused && focused->window != NULL && is_con_attached(focused))
1021 ipc_send_window_event("focus", focused);
1024 focused_id = last_focused = to_focus;
1028 if (focused_id == XCB_NONE) {
1029 DLOG("Still no window focused, better set focus to the root window\n");
1030 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
1035 DLOG("ENDING CHANGES\n");
1037 /* Disable EnterWindow events for windows which will be unmapped in
1038 * x_push_node_unmaps() now. Unmapping windows happens when switching
1039 * workspaces. We want to avoid getting EnterNotifies during that phase
1040 * because they would screw up our focus. One of these cases is having a
1041 * stack with two windows. If the first window is focused and gets
1042 * unmapped, the second one appears under the cursor and therefore gets an
1043 * EnterNotify event. */
1044 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
1045 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1046 if (!state->unmap_now)
1048 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1051 /* Push all pending unmaps */
1052 x_push_node_unmaps(con);
1054 /* save the current stack as old stack */
1055 CIRCLEQ_FOREACH(state, &state_head, state) {
1056 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
1057 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
1059 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
1060 // DLOG("old stack: 0x%08x\n", state->id);
1067 * Raises the specified container in the internal stack of X windows. The
1068 * next call to x_push_changes() will make the change visible in X11.
1071 void x_raise_con(Con *con) {
1073 state = state_for_frame(con->frame);
1074 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
1076 CIRCLEQ_REMOVE(&state_head, state, state);
1077 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
1081 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
1082 * of the given name. Used for properly tagging the windows for easily spotting
1083 * i3 windows in xwininfo -root -all.
1086 void x_set_name(Con *con, const char *name) {
1087 struct con_state *state;
1089 if ((state = state_for_frame(con->frame)) == NULL) {
1090 ELOG("window state not found\n");
1095 state->name = sstrdup(name);
1099 * Set up the I3_SHMLOG_PATH atom.
1102 void update_shmlog_atom() {
1103 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
1104 A_I3_SHMLOG_PATH, A_UTF8_STRING, 8,
1105 strlen(shmlogname), shmlogname);
1109 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
1112 void x_set_i3_atoms(void) {
1113 pid_t pid = getpid();
1114 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
1115 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
1116 current_socketpath);
1117 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_PID, XCB_ATOM_CARDINAL, 32, 1, &pid);
1118 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
1119 strlen(current_configpath), current_configpath);
1120 update_shmlog_atom();
1124 * Set warp_to coordinates. This will trigger on the next call to
1128 void x_set_warp_to(Rect *rect)
1130 if (!config.disable_focus_follows_mouse)
1135 * Applies the given mask to the event mask of every i3 window decoration X11
1136 * window. This is useful to disable EnterNotify while resizing so that focus
1140 void x_mask_event_mask(uint32_t mask) {
1141 uint32_t values[] = { FRAME_EVENT_MASK & mask };
1144 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1146 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);