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, we separately keep
19 * track of the X11 window ID to be able to always tell whether the focused
20 * window actually changed. */
21 static xcb_window_t last_focused = XCB_NONE;
23 /* Stores coordinates to warp mouse pointer to if set */
27 * Describes the X11 state we may modify (map state, position, window stack).
28 * There is one entry per container. The state represents the current situation
29 * as X11 sees it (with the exception of the order in the state_head CIRCLEQ,
30 * which represents the order that will be pushed to X11, while old_state_head
31 * represents the current order). It will be updated in x_push_changes().
34 typedef struct con_state {
40 /** The con for which this state is. */
43 /* For reparenting, we have a flag (need_reparent) and the X ID of the old
44 * frame this window was in. The latter is necessary because we need to
45 * ignore UnmapNotify events (by changing the window event mask). */
47 xcb_window_t old_frame;
56 CIRCLEQ_ENTRY(con_state) state;
57 CIRCLEQ_ENTRY(con_state) old_state;
58 TAILQ_ENTRY(con_state) initial_mapping_order;
61 CIRCLEQ_HEAD(state_head, con_state) state_head =
62 CIRCLEQ_HEAD_INITIALIZER(state_head);
64 CIRCLEQ_HEAD(old_state_head, con_state) old_state_head =
65 CIRCLEQ_HEAD_INITIALIZER(old_state_head);
67 TAILQ_HEAD(initial_mapping_head, con_state) initial_mapping_head =
68 TAILQ_HEAD_INITIALIZER(initial_mapping_head);
71 * Returns the container state for the given frame. This function always
72 * returns a container state (otherwise, there is a bug in the code and the
73 * container state of a container for which x_con_init() was not called was
77 static con_state *state_for_frame(xcb_window_t window) {
79 CIRCLEQ_FOREACH(state, &state_head, state)
80 if (state->id == window)
83 /* TODO: better error handling? */
84 ELOG("No state found\n");
90 * Initializes the X11 part for the given container. Called exactly once for
91 * every container from con_new().
94 void x_con_init(Con *con, uint16_t depth) {
95 /* TODO: maybe create the window when rendering first? we could then even
96 * get the initial geometry right */
101 xcb_visualid_t visual = XCB_COPY_FROM_PARENT;
102 xcb_colormap_t win_colormap = XCB_NONE;
103 if (depth != root_depth && depth != XCB_COPY_FROM_PARENT) {
104 /* For custom visuals, we need to create a colormap before creating
105 * this window. It will be freed directly after creating the window. */
106 visual = get_visualid_by_depth(depth);
107 win_colormap = xcb_generate_id(conn);
108 xcb_create_colormap_checked(conn, XCB_COLORMAP_ALLOC_NONE, win_colormap, root, visual);
110 /* We explicitly set a background color and border color (even though we
111 * don’t even have a border) because the X11 server requires us to when
112 * using 32 bit color depths, see
113 * http://stackoverflow.com/questions/3645632 */
114 mask |= XCB_CW_BACK_PIXEL;
115 values[0] = root_screen->black_pixel;
117 mask |= XCB_CW_BORDER_PIXEL;
118 values[1] = root_screen->black_pixel;
120 /* our own frames should not be managed */
121 mask |= XCB_CW_OVERRIDE_REDIRECT;
124 /* see include/xcb.h for the FRAME_EVENT_MASK */
125 mask |= XCB_CW_EVENT_MASK;
126 values[3] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
128 mask |= XCB_CW_COLORMAP;
129 values[4] = win_colormap;
131 /* our own frames should not be managed */
132 mask = XCB_CW_OVERRIDE_REDIRECT;
135 /* see include/xcb.h for the FRAME_EVENT_MASK */
136 mask |= XCB_CW_EVENT_MASK;
137 values[1] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
139 mask |= XCB_CW_COLORMAP;
140 values[2] = colormap;
143 Rect dims = {-15, -15, 10, 10};
144 con->frame = create_window(conn, dims, depth, visual, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values);
146 if (win_colormap != XCB_NONE)
147 xcb_free_colormap(conn, win_colormap);
149 struct con_state *state = scalloc(sizeof(struct con_state));
150 state->id = con->frame;
151 state->mapped = false;
152 state->initial = true;
153 DLOG("Adding window 0x%08x to lists\n", state->id);
154 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
155 CIRCLEQ_INSERT_HEAD(&old_state_head, state, old_state);
156 TAILQ_INSERT_TAIL(&initial_mapping_head, state, initial_mapping_order);
157 DLOG("adding new state for window id 0x%08x\n", state->id);
161 * Re-initializes the associated X window state for this container. You have
162 * to call this when you assign a client to an empty container to ensure that
163 * its state gets updated correctly.
166 void x_reinit(Con *con) {
167 struct con_state *state;
169 if ((state = state_for_frame(con->frame)) == NULL) {
170 ELOG("window state not found\n");
174 DLOG("resetting state %p to initial\n", state);
175 state->initial = true;
176 state->child_mapped = false;
178 memset(&(state->window_rect), 0, sizeof(Rect));
182 * Reparents the child window of the given container (necessary for sticky
183 * containers). The reparenting happens in the next call of x_push_changes().
186 void x_reparent_child(Con *con, Con *old) {
187 struct con_state *state;
188 if ((state = state_for_frame(con->frame)) == NULL) {
189 ELOG("window state for con not found\n");
193 state->need_reparent = true;
194 state->old_frame = old->frame;
198 * Moves a child window from Container src to Container dest.
201 void x_move_win(Con *src, Con *dest) {
202 struct con_state *state_src, *state_dest;
204 if ((state_src = state_for_frame(src->frame)) == NULL) {
205 ELOG("window state for src not found\n");
209 if ((state_dest = state_for_frame(dest->frame)) == NULL) {
210 ELOG("window state for dest not found\n");
214 state_dest->con = state_src->con;
215 state_src->con = NULL;
217 Rect zero = {0, 0, 0, 0};
218 if (memcmp(&(state_dest->window_rect), &(zero), sizeof(Rect)) == 0) {
219 memcpy(&(state_dest->window_rect), &(state_src->window_rect), sizeof(Rect));
220 DLOG("COPYING RECT\n");
225 * Kills the window decoration associated with the given container.
228 void x_con_kill(Con *con) {
231 xcb_destroy_window(conn, con->frame);
232 xcb_free_pixmap(conn, con->pixmap);
233 xcb_free_gc(conn, con->pm_gc);
234 state = state_for_frame(con->frame);
235 CIRCLEQ_REMOVE(&state_head, state, state);
236 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
237 TAILQ_REMOVE(&initial_mapping_head, state, initial_mapping_order);
241 /* Invalidate focused_id to correctly focus new windows with the same ID */
242 focused_id = last_focused = XCB_NONE;
246 * Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW)
249 bool window_supports_protocol(xcb_window_t window, xcb_atom_t atom) {
250 xcb_get_property_cookie_t cookie;
251 xcb_icccm_get_wm_protocols_reply_t protocols;
254 cookie = xcb_icccm_get_wm_protocols(conn, window, A_WM_PROTOCOLS);
255 if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1)
258 /* Check if the client’s protocols have the requested atom set */
259 for (uint32_t i = 0; i < protocols.atoms_len; i++)
260 if (protocols.atoms[i] == atom)
263 xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
269 * Kills the given X11 window using WM_DELETE_WINDOW (if supported).
272 void x_window_kill(xcb_window_t window, kill_window_t kill_window) {
273 /* if this window does not support WM_DELETE_WINDOW, we kill it the hard way */
274 if (!window_supports_protocol(window, A_WM_DELETE_WINDOW)) {
275 if (kill_window == KILL_WINDOW) {
276 LOG("Killing specific window 0x%08x\n", window);
277 xcb_destroy_window(conn, window);
279 LOG("Killing the X11 client which owns window 0x%08x\n", window);
280 xcb_kill_client(conn, window);
285 /* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
286 * In order to properly initialize these bytes, we allocate 32 bytes even
287 * though we only need less for an xcb_configure_notify_event_t */
288 void *event = scalloc(32);
289 xcb_client_message_event_t *ev = event;
291 ev->response_type = XCB_CLIENT_MESSAGE;
293 ev->type = A_WM_PROTOCOLS;
295 ev->data.data32[0] = A_WM_DELETE_WINDOW;
296 ev->data.data32[1] = XCB_CURRENT_TIME;
298 LOG("Sending WM_DELETE to the client\n");
299 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char *)ev);
305 * Draws the decoration of the given container onto its parent.
308 void x_draw_decoration(Con *con) {
309 Con *parent = con->parent;
310 bool leaf = con_is_leaf(con);
312 /* This code needs to run for:
314 * • non-leaf containers which are in a stacked/tabbed container
316 * It does not need to run for:
317 * • direct children of outputs or dockareas
318 * • floating containers (they don’t have a decoration)
321 parent->layout != L_STACKED &&
322 parent->layout != L_TABBED) ||
323 parent->type == CT_OUTPUT ||
324 parent->type == CT_DOCKAREA ||
325 con->type == CT_FLOATING_CON)
328 /* Skip containers whose height is 0 (for example empty dockareas) */
329 if (con->rect.height == 0)
332 /* Skip containers whose pixmap has not yet been created (can happen when
333 * decoration rendering happens recursively for a window for which
334 * x_push_node() was not yet called) */
335 if (leaf && con->pixmap == XCB_NONE)
338 /* 1: build deco_params and compare with cache */
339 struct deco_render_params *p = scalloc(sizeof(struct deco_render_params));
341 /* find out which colors to use */
343 p->color = &config.client.urgent;
344 else if (con == focused || con_inside_focused(con))
345 p->color = &config.client.focused;
346 else if (con == TAILQ_FIRST(&(parent->focus_head)))
347 p->color = &config.client.focused_inactive;
349 p->color = &config.client.unfocused;
351 p->border_style = con_border_style(con);
353 Rect *r = &(con->rect);
354 Rect *w = &(con->window_rect);
355 p->con_rect = (struct width_height){r->width, r->height};
356 p->con_window_rect = (struct width_height){w->width, w->height};
357 p->con_deco_rect = con->deco_rect;
358 p->background = config.client.background;
359 p->con_is_leaf = con_is_leaf(con);
360 p->parent_layout = con->parent->layout;
362 if (con->deco_render_params != NULL &&
363 (con->window == NULL || !con->window->name_x_changed) &&
364 !parent->pixmap_recreated &&
365 !con->pixmap_recreated &&
366 !con->mark_changed &&
367 memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) {
373 while ((next = TAILQ_NEXT(next, nodes))) {
374 FREE(next->deco_render_params);
377 FREE(con->deco_render_params);
378 con->deco_render_params = p;
380 if (con->window != NULL && con->window->name_x_changed)
381 con->window->name_x_changed = false;
383 parent->pixmap_recreated = false;
384 con->pixmap_recreated = false;
385 con->mark_changed = false;
387 /* 2: draw the client.background, but only for the parts around the client_rect */
388 if (con->window != NULL) {
389 xcb_rectangle_t background[] = {
391 {0, 0, r->width, w->y},
393 {0, (w->y + w->height), r->width, r->height - (w->y + w->height)},
395 {0, 0, w->x, r->height},
397 {w->x + w->width, 0, r->width - (w->x + w->width), r->height}};
399 for (int i = 0; i < 4; i++)
400 DLOG("rect is (%d, %d) with %d x %d\n",
408 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){config.client.background});
409 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background);
412 /* 3: draw a rectangle in border color around the client */
413 if (p->border_style != BS_NONE && p->con_is_leaf) {
414 /* We might hide some borders adjacent to the screen-edge */
415 adjacent_t borders_to_hide = ADJ_NONE;
416 borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
418 Rect br = con_border_style_rect(con);
420 DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height);
421 DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height);
422 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);
425 /* These rectangles represents the border around the child window
426 * (left, bottom and right part). We don’t just fill the whole
427 * rectangle because some childs are not freely resizable and we want
428 * their background color to "shine through". */
429 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->background});
430 if (!(borders_to_hide & ADJ_LEFT_SCREEN_EDGE)) {
431 xcb_rectangle_t leftline = {0, 0, br.x, r->height};
432 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &leftline);
434 if (!(borders_to_hide & ADJ_RIGHT_SCREEN_EDGE)) {
435 xcb_rectangle_t rightline = {r->width + (br.width + br.x), 0, -(br.width + br.x), r->height};
436 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &rightline);
438 if (!(borders_to_hide & ADJ_LOWER_SCREEN_EDGE)) {
439 xcb_rectangle_t bottomline = {br.x, r->height + (br.height + br.y), r->width + br.width, -(br.height + br.y)};
440 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &bottomline);
442 /* 1pixel border needs an additional line at the top */
443 if (p->border_style == BS_PIXEL && !(borders_to_hide & ADJ_UPPER_SCREEN_EDGE)) {
444 xcb_rectangle_t topline = {br.x, 0, r->width + br.width, br.y};
445 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline);
448 /* Highlight the side of the border at which the next window will be
449 * opened if we are rendering a single window within a split container
450 * (which is undistinguishable from a single window outside a split
451 * container otherwise. */
452 if (TAILQ_NEXT(con, nodes) == NULL &&
453 TAILQ_PREV(con, nodes_head, nodes) == NULL &&
454 con->parent->type != CT_FLOATING_CON) {
455 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->indicator});
456 if (p->parent_layout == L_SPLITH)
457 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
458 {r->width + (br.width + br.x), br.y, -(br.width + br.x), r->height + br.height}});
459 else if (p->parent_layout == L_SPLITV)
460 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
461 {br.x, r->height + (br.height + br.y), r->width + br.width, -(br.height + br.y)}});
465 /* if this is a borderless/1pixel window, we don’t need to render the
467 if (p->border_style != BS_NORMAL)
470 /* 4: paint the bar */
471 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->background});
472 xcb_rectangle_t drect = {con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height};
473 xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect);
475 /* 5: draw two unconnected horizontal lines in border color */
476 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->border});
477 Rect *dr = &(con->deco_rect);
478 adjacent_t borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
479 int deco_diff_l = borders_to_hide & ADJ_LEFT_SCREEN_EDGE ? 0 : con->current_border_width;
480 int deco_diff_r = borders_to_hide & ADJ_RIGHT_SCREEN_EDGE ? 0 : con->current_border_width;
481 if (parent->layout == L_TABBED ||
482 (parent->layout == L_STACKED && TAILQ_NEXT(con, nodes) != NULL)) {
486 xcb_segment_t segments[] = {
488 dr->x + dr->width - 1, dr->y},
489 {dr->x + deco_diff_l, dr->y + dr->height - 1,
490 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 if (config.show_marks && con->mark != NULL && (con->mark)[0] != '_') {
538 char *formatted_mark;
539 sasprintf(&formatted_mark, "[%s]", con->mark);
540 i3String *mark = i3string_from_utf8(formatted_mark);
541 FREE(formatted_mark);
542 mark_width = predict_text_width(mark);
544 draw_text(mark, parent->pixmap, parent->pm_gc,
545 con->deco_rect.x + con->deco_rect.width - mark_width - logical_px(2),
546 con->deco_rect.y + text_offset_y, mark_width);
552 parent->pixmap, parent->pm_gc,
553 con->deco_rect.x + logical_px(2) + indent_px, con->deco_rect.y + text_offset_y,
554 con->deco_rect.width - logical_px(2) - indent_px - mark_width - logical_px(2));
557 /* Since we don’t clip the text at all, it might in some cases be painted
558 * on the border pixels on the right side of a window. Therefore, we draw
559 * the right border again after rendering the text (and the unconnected
560 * lines in border color). */
562 /* Draw a 1px separator line before and after every tab, so that tabs can
563 * be easily distinguished. */
564 if (parent->layout == L_TABBED) {
565 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->border});
567 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->background});
569 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, parent->pixmap, parent->pm_gc, 6,
571 {dr->x + dr->width, dr->y},
572 {dr->x + dr->width, dr->y + dr->height},
573 {dr->x + dr->width - 1, dr->y},
574 {dr->x + dr->width - 1, dr->y + dr->height},
575 {dr->x, dr->y + dr->height},
579 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->border});
580 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
583 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
587 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
588 * because x_push_node uses focus order to recurse (see the comment above)
589 * while drawing the decoration needs to happen in the actual order.
592 void x_deco_recurse(Con *con) {
594 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
595 TAILQ_EMPTY(&(con->floating_head));
596 con_state *state = state_for_frame(con->frame);
599 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
600 x_deco_recurse(current);
602 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
603 x_deco_recurse(current);
606 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
609 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
610 (!leaf || con->mapped))
611 x_draw_decoration(con);
615 * This function pushes the properties of each node of the layout tree to
616 * X11 if they have changed (like the map state, position of the window, …).
617 * It recursively traverses all children of the given node.
620 void x_push_node(Con *con) {
623 Rect rect = con->rect;
625 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
626 state = state_for_frame(con->frame);
628 if (state->name != NULL) {
629 DLOG("pushing name %s for con %p\n", state->name, con);
631 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
632 XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
636 if (con->window == NULL) {
637 /* Calculate the height of all window decorations which will be drawn on to
639 uint32_t max_y = 0, max_height = 0;
640 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
641 Rect *dr = &(current->deco_rect);
642 if (dr->y >= max_y && dr->height >= max_height) {
644 max_height = dr->height;
647 rect.height = max_y + max_height;
648 if (rect.height == 0)
652 /* reparent the child window (when the window was moved due to a sticky
654 if (state->need_reparent && con->window != NULL) {
655 DLOG("Reparenting child window\n");
657 /* Temporarily set the event masks to XCB_NONE so that we won’t get
658 * UnmapNotify events (otherwise the handler would close the container).
659 * These events are generated automatically when reparenting. */
660 uint32_t values[] = {XCB_NONE};
661 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
662 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
664 xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
666 values[0] = FRAME_EVENT_MASK;
667 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
668 values[0] = CHILD_EVENT_MASK;
669 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
671 state->old_frame = XCB_NONE;
672 state->need_reparent = false;
675 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
676 con, con->window->id, con->ignore_unmap);
679 /* The pixmap of a borderless leaf container will not be used except
680 * for the titlebar in a stack or tabs (issue #1013). */
681 bool is_pixmap_needed = (con->border_style != BS_NONE ||
683 con->parent->layout == L_STACKED ||
684 con->parent->layout == L_TABBED);
686 bool fake_notify = false;
687 /* Set new position if rect changed (and if height > 0) or if the pixmap
688 * needs to be recreated */
689 if ((is_pixmap_needed && con->pixmap == XCB_NONE) || (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
691 /* We first create the new pixmap, then render to it, set it as the
692 * background and only afterwards change the window size. This reduces
695 /* As the pixmap only depends on the size and not on the position, it
696 * is enough to check if width/height have changed. Also, we don’t
697 * create a pixmap at all when the window is actually not visible
698 * (height == 0) or when it is not needed. */
699 bool has_rect_changed = (state->rect.width != rect.width || state->rect.height != rect.height);
701 /* Check if the container has an unneeded pixmap left over from
702 * previously having a border or titlebar. */
703 if (!is_pixmap_needed && con->pixmap != XCB_NONE) {
704 xcb_free_pixmap(conn, con->pixmap);
705 con->pixmap = XCB_NONE;
708 if (is_pixmap_needed && (has_rect_changed || con->pixmap == XCB_NONE)) {
709 if (con->pixmap == 0) {
710 con->pixmap = xcb_generate_id(conn);
711 con->pm_gc = xcb_generate_id(conn);
713 xcb_free_pixmap(conn, con->pixmap);
714 xcb_free_gc(conn, con->pm_gc);
717 uint16_t win_depth = root_depth;
719 win_depth = con->window->depth;
721 xcb_create_pixmap(conn, win_depth, con->pixmap, con->frame, rect.width, rect.height);
723 /* For the graphics context, we disable GraphicsExposure events.
724 * Those will be sent when a CopyArea request cannot be fulfilled
725 * properly due to parts of the source being unmapped or otherwise
726 * unavailable. Since we always copy from pixmaps to windows, this
727 * is not a concern for us. */
728 uint32_t values[] = {0};
729 xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
731 con->pixmap_recreated = true;
733 /* Don’t render the decoration for windows inside a stack which are
734 * not visible right now */
736 con->parent->layout != L_STACKED ||
737 TAILQ_FIRST(&(con->parent->focus_head)) == con)
738 /* Render the decoration now to make the correct decoration visible
739 * from the very first moment. Later calls will be cached, so this
740 * doesn’t hurt performance. */
744 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
745 /* flush to ensure that the following commands are sent in a single
746 * buffer and will be processed directly afterwards (the contents of a
747 * window get lost when resizing it, therefore we want to provide it as
748 * fast as possible) */
750 xcb_set_window_rect(conn, con->frame, rect);
751 if (con->pixmap != XCB_NONE)
752 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
755 memcpy(&(state->rect), &rect, sizeof(Rect));
759 /* dito, but for child windows */
760 if (con->window != NULL &&
761 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
762 DLOG("setting window rect (%d, %d, %d, %d)\n",
763 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
764 xcb_set_window_rect(conn, con->window->id, con->window_rect);
765 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
769 /* Map if map state changed, also ensure that the child window
770 * is changed if we are mapped and there is a new, unmapped child window.
771 * Unmaps are handled in x_push_node_unmaps(). */
772 if ((state->mapped != con->mapped || (con->window != NULL && !state->child_mapped)) &&
774 xcb_void_cookie_t cookie;
776 if (con->window != NULL) {
777 /* Set WM_STATE_NORMAL because GTK applications don’t want to
778 * drag & drop if we don’t. Also, xprop(1) needs it. */
779 long data[] = {XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE};
780 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
781 A_WM_STATE, A_WM_STATE, 32, 2, data);
785 if (!state->child_mapped && con->window != NULL) {
786 cookie = xcb_map_window(conn, con->window->id);
788 /* We are interested in EnterNotifys as soon as the window is
790 values[0] = CHILD_EVENT_MASK;
791 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
792 DLOG("mapping child window (serial %d)\n", cookie.sequence);
793 state->child_mapped = true;
796 cookie = xcb_map_window(conn, con->frame);
798 values[0] = FRAME_EVENT_MASK;
799 xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
801 /* copy the pixmap contents to the frame window immediately after mapping */
802 if (con->pixmap != XCB_NONE)
803 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
806 DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
807 state->mapped = con->mapped;
810 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
813 DLOG("Sending fake configure notify\n");
814 fake_absolute_configure_notify(con);
817 /* Handle all children and floating windows of this node. We recurse
818 * in focus order to display the focused client in a stack first when
819 * switching workspaces (reduces flickering). */
820 TAILQ_FOREACH(current, &(con->focus_head), focused)
821 x_push_node(current);
825 * Same idea as in x_push_node(), but this function only unmaps windows. It is
826 * necessary to split this up to handle new fullscreen clients properly: The
827 * new window needs to be mapped and focus needs to be set *before* the
828 * underlying windows are unmapped. Otherwise, focus will revert to the
829 * PointerRoot and will then be set to the new window, generating unnecessary
830 * FocusIn/FocusOut events.
833 static void x_push_node_unmaps(Con *con) {
837 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
838 state = state_for_frame(con->frame);
840 /* map/unmap if map state changed, also ensure that the child window
841 * is changed if we are mapped *and* in initial state (meaning the
842 * container was empty before, but now got a child) */
843 if (state->unmap_now) {
844 xcb_void_cookie_t cookie;
845 if (con->window != NULL) {
846 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
847 long data[] = {XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE};
848 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
849 A_WM_STATE, A_WM_STATE, 32, 2, data);
852 cookie = xcb_unmap_window(conn, con->frame);
853 DLOG("unmapping container %p / %s (serial %d)\n", con, con->name, cookie.sequence);
854 /* we need to increase ignore_unmap for this container (if it
855 * contains a window) and for every window "under" this one which
856 * contains a window */
857 if (con->window != NULL) {
859 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
861 state->mapped = con->mapped;
864 /* handle all children and floating windows of this node */
865 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
866 x_push_node_unmaps(current);
868 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
869 x_push_node_unmaps(current);
873 * Returns true if the given container is currently attached to its parent.
875 * TODO: Remove once #1185 has been fixed
877 static bool is_con_attached(Con *con) {
878 if (con->parent == NULL)
882 TAILQ_FOREACH(current, &(con->parent->nodes_head), nodes) {
891 * Pushes all changes (state of each node, see x_push_node() and the window
894 * NOTE: We need to push the stack first so that the windows have the correct
895 * stacking order. This is relevant for workspace switching where we map the
896 * windows because mapping may generate EnterNotify events. When they are
897 * generated in the wrong order, this will cause focus problems when switching
901 void x_push_changes(Con *con) {
903 xcb_query_pointer_cookie_t pointercookie;
905 /* If we need to warp later, we request the pointer position as soon as possible */
907 pointercookie = xcb_query_pointer(conn, root);
910 DLOG("-- PUSHING WINDOW STACK --\n");
911 //DLOG("Disabling EnterNotify\n");
912 uint32_t values[1] = {XCB_NONE};
913 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
915 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
917 //DLOG("Done, EnterNotify disabled\n");
918 bool order_changed = false;
919 bool stacking_changed = false;
921 /* count first, necessary to (re)allocate memory for the bottom-to-top
922 * stack afterwards */
924 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
925 if (con_has_managed_window(state->con))
928 /* The bottom-to-top window stack of all windows which are managed by i3.
929 * Used for x_get_window_stack(). */
930 static xcb_window_t *client_list_windows = NULL;
931 static int client_list_count = 0;
933 if (cnt != client_list_count) {
934 client_list_windows = srealloc(client_list_windows, sizeof(xcb_window_t) * cnt);
935 client_list_count = cnt;
938 xcb_window_t *walk = client_list_windows;
940 /* X11 correctly represents the stack if we push it from bottom to top */
941 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
942 if (con_has_managed_window(state->con))
943 memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
945 //DLOG("stack: 0x%08x\n", state->id);
946 con_state *prev = CIRCLEQ_PREV(state, state);
947 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
948 if (prev != old_prev)
949 order_changed = true;
950 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
951 stacking_changed = true;
952 //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
954 mask |= XCB_CONFIG_WINDOW_SIBLING;
955 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
956 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
958 xcb_configure_window(conn, prev->id, mask, values);
960 state->initial = false;
963 /* If we re-stacked something (or a new window appeared), we need to update
964 * the _NET_CLIENT_LIST and _NET_CLIENT_LIST_STACKING hints */
965 if (stacking_changed) {
966 DLOG("Client list changed (%i clients)\n", cnt);
967 ewmh_update_client_list_stacking(client_list_windows, client_list_count);
969 walk = client_list_windows;
971 /* reorder by initial mapping */
972 TAILQ_FOREACH(state, &initial_mapping_head, initial_mapping_order) {
973 if (con_has_managed_window(state->con))
974 *walk++ = state->con->window->id;
977 ewmh_update_client_list(client_list_windows, client_list_count);
980 DLOG("PUSHING CHANGES\n");
984 xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
986 ELOG("Could not query pointer position, not warping pointer\n");
988 int mid_x = warp_to->x + (warp_to->width / 2);
989 int mid_y = warp_to->y + (warp_to->height / 2);
991 Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
992 Output *target = get_output_containing(mid_x, mid_y);
993 if (current != target) {
994 /* Ignore MotionNotify events generated by warping */
995 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT});
996 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
997 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){ROOT_EVENT_MASK});
1003 //DLOG("Re-enabling EnterNotify\n");
1004 values[0] = FRAME_EVENT_MASK;
1005 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1007 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1009 //DLOG("Done, EnterNotify re-enabled\n");
1011 x_deco_recurse(con);
1013 xcb_window_t to_focus = focused->frame;
1014 if (focused->window != NULL)
1015 to_focus = focused->window->id;
1017 if (focused_id != to_focus) {
1018 if (!focused->mapped) {
1019 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
1020 /* Invalidate focused_id to correctly focus new windows with the same ID */
1021 focused_id = XCB_NONE;
1023 if (focused->window != NULL &&
1024 focused->window->needs_take_focus &&
1025 focused->window->doesnt_accept_focus) {
1026 DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n",
1027 to_focus, focused, focused->name);
1028 send_take_focus(to_focus, last_timestamp);
1030 ewmh_update_active_window((con_has_managed_window(focused) ? focused->window->id : XCB_WINDOW_NONE));
1032 if (to_focus != last_focused && is_con_attached(focused))
1033 ipc_send_window_event("focus", focused);
1035 DLOG("Updating focus (focused: %p / %s) to X11 window 0x%08x\n", focused, focused->name, to_focus);
1036 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
1037 * no focus change events for our own focus changes. We only want
1038 * these generated by the clients. */
1039 if (focused->window != NULL) {
1040 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
1041 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
1043 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
1044 if (focused->window != NULL) {
1045 values[0] = CHILD_EVENT_MASK;
1046 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
1049 ewmh_update_active_window((con_has_managed_window(focused) ? focused->window->id : XCB_WINDOW_NONE));
1051 if (to_focus != XCB_NONE && to_focus != last_focused && focused->window != NULL && is_con_attached(focused))
1052 ipc_send_window_event("focus", focused);
1055 focused_id = last_focused = to_focus;
1059 if (focused_id == XCB_NONE) {
1060 DLOG("Still no window focused, better set focus to the root window\n");
1061 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
1062 ewmh_update_active_window(XCB_WINDOW_NONE);
1067 DLOG("ENDING CHANGES\n");
1069 /* Disable EnterWindow events for windows which will be unmapped in
1070 * x_push_node_unmaps() now. Unmapping windows happens when switching
1071 * workspaces. We want to avoid getting EnterNotifies during that phase
1072 * because they would screw up our focus. One of these cases is having a
1073 * stack with two windows. If the first window is focused and gets
1074 * unmapped, the second one appears under the cursor and therefore gets an
1075 * EnterNotify event. */
1076 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
1077 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1078 if (!state->unmap_now)
1080 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1083 /* Push all pending unmaps */
1084 x_push_node_unmaps(con);
1086 /* save the current stack as old stack */
1087 CIRCLEQ_FOREACH(state, &state_head, state) {
1088 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
1089 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
1091 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
1092 // DLOG("old stack: 0x%08x\n", state->id);
1099 * Raises the specified container in the internal stack of X windows. The
1100 * next call to x_push_changes() will make the change visible in X11.
1103 void x_raise_con(Con *con) {
1105 state = state_for_frame(con->frame);
1106 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
1108 CIRCLEQ_REMOVE(&state_head, state, state);
1109 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
1113 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
1114 * of the given name. Used for properly tagging the windows for easily spotting
1115 * i3 windows in xwininfo -root -all.
1118 void x_set_name(Con *con, const char *name) {
1119 struct con_state *state;
1121 if ((state = state_for_frame(con->frame)) == NULL) {
1122 ELOG("window state not found\n");
1127 state->name = sstrdup(name);
1131 * Set up the I3_SHMLOG_PATH atom.
1134 void update_shmlog_atom() {
1135 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
1136 A_I3_SHMLOG_PATH, A_UTF8_STRING, 8,
1137 strlen(shmlogname), shmlogname);
1141 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
1144 void x_set_i3_atoms(void) {
1145 pid_t pid = getpid();
1146 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
1147 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
1148 current_socketpath);
1149 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_PID, XCB_ATOM_CARDINAL, 32, 1, &pid);
1150 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
1151 strlen(current_configpath), current_configpath);
1152 update_shmlog_atom();
1156 * Set warp_to coordinates. This will trigger on the next call to
1160 void x_set_warp_to(Rect *rect) {
1161 if (config.mouse_warping != POINTER_WARPING_NONE)
1166 * Applies the given mask to the event mask of every i3 window decoration X11
1167 * window. This is useful to disable EnterNotify while resizing so that focus
1171 void x_mask_event_mask(uint32_t mask) {
1172 uint32_t values[] = {FRAME_EVENT_MASK & mask};
1175 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1177 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);