#undef I3__FILE__ #define I3__FILE__ "x.c" /* * vim:ts=4:sw=4:expandtab * * i3 - an improved dynamic tiling window manager * © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE) * * x.c: Interface to X11, transfers our in-memory state to X11 (see also * render.c). Basically a big state machine. * */ #include "all.h" /* Stores the X11 window ID of the currently focused window */ xcb_window_t focused_id = XCB_NONE; /* The bottom-to-top window stack of all windows which are managed by i3. * Used for x_get_window_stack(). */ static xcb_window_t *btt_stack; static int btt_stack_num; /* Stores coordinates to warp mouse pointer to if set */ static Rect *warp_to; /* * Describes the X11 state we may modify (map state, position, window stack). * There is one entry per container. The state represents the current situation * as X11 sees it (with the exception of the order in the state_head CIRCLEQ, * which represents the order that will be pushed to X11, while old_state_head * represents the current order). It will be updated in x_push_changes(). * */ typedef struct con_state { xcb_window_t id; bool mapped; bool unmap_now; bool child_mapped; /** The con for which this state is. */ Con *con; /* For reparenting, we have a flag (need_reparent) and the X ID of the old * frame this window was in. The latter is necessary because we need to * ignore UnmapNotify events (by changing the window event mask). */ bool need_reparent; xcb_window_t old_frame; Rect rect; Rect window_rect; bool initial; char *name; CIRCLEQ_ENTRY(con_state) state; CIRCLEQ_ENTRY(con_state) old_state; } con_state; CIRCLEQ_HEAD(state_head, con_state) state_head = CIRCLEQ_HEAD_INITIALIZER(state_head); CIRCLEQ_HEAD(old_state_head, con_state) old_state_head = CIRCLEQ_HEAD_INITIALIZER(old_state_head); /* * Returns the container state for the given frame. This function always * returns a container state (otherwise, there is a bug in the code and the * container state of a container for which x_con_init() was not called was * requested). * */ static con_state *state_for_frame(xcb_window_t window) { con_state *state; CIRCLEQ_FOREACH(state, &state_head, state) if (state->id == window) return state; /* TODO: better error handling? */ ELOG("No state found\n"); assert(false); return NULL; } /* * Initializes the X11 part for the given container. Called exactly once for * every container from con_new(). * */ void x_con_init(Con *con, uint16_t depth) { /* TODO: maybe create the window when rendering first? we could then even * get the initial geometry right */ uint32_t mask = 0; uint32_t values[5]; xcb_visualid_t visual = XCB_COPY_FROM_PARENT; xcb_colormap_t win_colormap = XCB_NONE; if (depth != root_depth && depth != XCB_COPY_FROM_PARENT) { /* For custom visuals, we need to create a colormap before creating * this window. It will be freed directly after creating the window. */ visual = get_visualid_by_depth(depth); win_colormap = xcb_generate_id(conn); xcb_create_colormap_checked(conn, XCB_COLORMAP_ALLOC_NONE, win_colormap, root, visual); /* We explicitly set a background color and border color (even though we * don’t even have a border) because the X11 server requires us to when * using 32 bit color depths, see * http://stackoverflow.com/questions/3645632 */ mask |= XCB_CW_BACK_PIXEL; values[0] = root_screen->black_pixel; mask |= XCB_CW_BORDER_PIXEL; values[1] = root_screen->black_pixel; /* our own frames should not be managed */ mask |= XCB_CW_OVERRIDE_REDIRECT; values[2] = 1; /* see include/xcb.h for the FRAME_EVENT_MASK */ mask |= XCB_CW_EVENT_MASK; values[3] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW; mask |= XCB_CW_COLORMAP; values[4] = win_colormap; } else { /* our own frames should not be managed */ mask = XCB_CW_OVERRIDE_REDIRECT; values[0] = 1; /* see include/xcb.h for the FRAME_EVENT_MASK */ mask |= XCB_CW_EVENT_MASK; values[1] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW; mask |= XCB_CW_COLORMAP; values[2] = colormap; } Rect dims = { -15, -15, 10, 10 }; con->frame = create_window(conn, dims, depth, visual, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values); if (win_colormap != XCB_NONE) xcb_free_colormap(conn, win_colormap); struct con_state *state = scalloc(sizeof(struct con_state)); state->id = con->frame; state->mapped = false; state->initial = true; CIRCLEQ_INSERT_HEAD(&state_head, state, state); CIRCLEQ_INSERT_HEAD(&old_state_head, state, old_state); DLOG("adding new state for window id 0x%08x\n", state->id); } /* * Re-initializes the associated X window state for this container. You have * to call this when you assign a client to an empty container to ensure that * its state gets updated correctly. * */ void x_reinit(Con *con) { struct con_state *state; if ((state = state_for_frame(con->frame)) == NULL) { ELOG("window state not found\n"); return; } DLOG("resetting state %p to initial\n", state); state->initial = true; state->child_mapped = false; state->con = con; memset(&(state->window_rect), 0, sizeof(Rect)); } /* * Reparents the child window of the given container (necessary for sticky * containers). The reparenting happens in the next call of x_push_changes(). * */ void x_reparent_child(Con *con, Con *old) { struct con_state *state; if ((state = state_for_frame(con->frame)) == NULL) { ELOG("window state for con not found\n"); return; } state->need_reparent = true; state->old_frame = old->frame; } /* * Moves a child window from Container src to Container dest. * */ void x_move_win(Con *src, Con *dest) { struct con_state *state_src, *state_dest; if ((state_src = state_for_frame(src->frame)) == NULL) { ELOG("window state for src not found\n"); return; } if ((state_dest = state_for_frame(dest->frame)) == NULL) { ELOG("window state for dest not found\n"); return; } state_dest->con = state_src->con; state_src->con = NULL; Rect zero = { 0, 0, 0, 0 }; if (memcmp(&(state_dest->window_rect), &(zero), sizeof(Rect)) == 0) { memcpy(&(state_dest->window_rect), &(state_src->window_rect), sizeof(Rect)); DLOG("COPYING RECT\n"); } } /* * Kills the window decoration associated with the given container. * */ void x_con_kill(Con *con) { con_state *state; xcb_destroy_window(conn, con->frame); xcb_free_pixmap(conn, con->pixmap); xcb_free_gc(conn, con->pm_gc); state = state_for_frame(con->frame); CIRCLEQ_REMOVE(&state_head, state, state); CIRCLEQ_REMOVE(&old_state_head, state, old_state); FREE(state->name); free(state); /* Invalidate focused_id to correctly focus new windows with the same ID */ focused_id = XCB_NONE; } /* * Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW) * */ bool window_supports_protocol(xcb_window_t window, xcb_atom_t atom) { xcb_get_property_cookie_t cookie; xcb_icccm_get_wm_protocols_reply_t protocols; bool result = false; cookie = xcb_icccm_get_wm_protocols(conn, window, A_WM_PROTOCOLS); if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1) return false; /* Check if the client’s protocols have the requested atom set */ for (uint32_t i = 0; i < protocols.atoms_len; i++) if (protocols.atoms[i] == atom) result = true; xcb_icccm_get_wm_protocols_reply_wipe(&protocols); return result; } /* * Kills the given X11 window using WM_DELETE_WINDOW (if supported). * */ void x_window_kill(xcb_window_t window, kill_window_t kill_window) { /* if this window does not support WM_DELETE_WINDOW, we kill it the hard way */ if (!window_supports_protocol(window, A_WM_DELETE_WINDOW)) { if (kill_window == KILL_WINDOW) { LOG("Killing specific window 0x%08x\n", window); xcb_destroy_window(conn, window); } else { LOG("Killing the X11 client which owns window 0x%08x\n", window); xcb_kill_client(conn, window); } return; } /* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes. * In order to properly initialize these bytes, we allocate 32 bytes even * though we only need less for an xcb_configure_notify_event_t */ void *event = scalloc(32); xcb_client_message_event_t *ev = event; ev->response_type = XCB_CLIENT_MESSAGE; ev->window = window; ev->type = A_WM_PROTOCOLS; ev->format = 32; ev->data.data32[0] = A_WM_DELETE_WINDOW; ev->data.data32[1] = XCB_CURRENT_TIME; LOG("Sending WM_DELETE to the client\n"); xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char*)ev); xcb_flush(conn); free(event); } /* * Draws the decoration of the given container onto its parent. * */ void x_draw_decoration(Con *con) { Con *parent = con->parent; bool leaf = con_is_leaf(con); /* This code needs to run for: * • leaf containers * • non-leaf containers which are in a stacked/tabbed container * * It does not need to run for: * • direct children of outputs or dockareas * • floating containers (they don’t have a decoration) */ if ((!leaf && parent->layout != L_STACKED && parent->layout != L_TABBED) || parent->type == CT_OUTPUT || parent->type == CT_DOCKAREA || con->type == CT_FLOATING_CON) return; /* Skip containers whose height is 0 (for example empty dockareas) */ if (con->rect.height == 0) return; /* Skip containers whose pixmap has not yet been created (can happen when * decoration rendering happens recursively for a window for which * x_push_node() was not yet called) */ if (leaf && con->pixmap == XCB_NONE) return; /* 1: build deco_params and compare with cache */ struct deco_render_params *p = scalloc(sizeof(struct deco_render_params)); /* find out which colors to use */ if (con->urgent) p->color = &config.client.urgent; else if (con == focused || con_inside_focused(con)) p->color = &config.client.focused; else if (con == TAILQ_FIRST(&(parent->focus_head))) p->color = &config.client.focused_inactive; else p->color = &config.client.unfocused; p->border_style = con_border_style(con); Rect *r = &(con->rect); Rect *w = &(con->window_rect); p->con_rect = (struct width_height){ r->width, r->height }; p->con_window_rect = (struct width_height){ w->width, w->height }; p->con_deco_rect = con->deco_rect; p->background = config.client.background; p->con_is_leaf = con_is_leaf(con); if (con->deco_render_params != NULL && (con->window == NULL || !con->window->name_x_changed) && !parent->pixmap_recreated && !con->pixmap_recreated && memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) { free(p); goto copy_pixmaps; } Con *next = con; while ((next = TAILQ_NEXT(next, nodes))) { FREE(next->deco_render_params); } FREE(con->deco_render_params); con->deco_render_params = p; if (con->window != NULL && con->window->name_x_changed) con->window->name_x_changed = false; parent->pixmap_recreated = false; con->pixmap_recreated = false; /* 2: draw the client.background, but only for the parts around the client_rect */ if (con->window != NULL) { xcb_rectangle_t background[] = { /* top area */ { 0, 0, r->width, w->y }, /* bottom area */ { 0, (w->y + w->height), r->width, r->height - (w->y + w->height) }, /* left area */ { 0, 0, w->x, r->height }, /* right area */ { w->x + w->width, 0, r->width - (w->x + w->width), r->height } }; #if 0 for (int i = 0; i < 4; i++) DLOG("rect is (%d, %d) with %d x %d\n", background[i].x, background[i].y, background[i].width, background[i].height ); #endif xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]) { config.client.background }); xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background); } /* 3: draw a rectangle in border color around the client */ if (p->border_style != BS_NONE && p->con_is_leaf) { /* We might hide some borders adjacent to the screen-edge */ adjacent_t borders_to_hide = ADJ_NONE; borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders; Rect br = con_border_style_rect(con); #if 0 DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height); DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height); 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); #endif /* These rectangles represents the border around the child window * (left, bottom and right part). We don’t just fill the whole * rectangle because some childs are not freely resizable and we want * their background color to "shine through". */ xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background }); if (!(borders_to_hide & ADJ_LEFT_SCREEN_EDGE)) { xcb_rectangle_t leftline = { 0, 0, br.x, r->height }; xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &leftline); } if (!(borders_to_hide & ADJ_RIGHT_SCREEN_EDGE)) { xcb_rectangle_t rightline = { r->width + br.width + br.x, 0, r->width, r->height }; xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &rightline); } if (!(borders_to_hide & ADJ_LOWER_SCREEN_EDGE)) { xcb_rectangle_t bottomline = { 0, r->height + br.height + br.y, r->width, r->height }; xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &bottomline); } /* 1pixel border needs an additional line at the top */ if (p->border_style == BS_1PIXEL && !(borders_to_hide & ADJ_UPPER_SCREEN_EDGE)) { xcb_rectangle_t topline = { br.x, 0, con->rect.width + br.width + br.x, br.y }; xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline); } /* Highlight the side of the border at which the next window will be * opened if we are rendering a single window within a split container * (which is undistinguishable from a single window outside a split * container otherwise. */ if (TAILQ_NEXT(con, nodes) == NULL && TAILQ_PREV(con, nodes_head, nodes) == NULL && con->parent->type != CT_FLOATING_CON) { xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->indicator }); if (con_orientation(con->parent) == HORIZ) xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){ { r->width + br.width + br.x, 0, r->width, r->height + br.height } }); else xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){ { br.x, r->height + br.height + br.y, r->width - (2 * br.x), r->height } }); } } /* if this is a borderless/1pixel window, we don’t need to render the * decoration. */ if (p->border_style != BS_NORMAL) goto copy_pixmaps; /* 4: paint the bar */ xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background }); xcb_rectangle_t drect = { con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height }; xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect); /* 5: draw two unconnected lines in border color */ xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border }); Rect *dr = &(con->deco_rect); xcb_segment_t segments[] = { { dr->x, dr->y, dr->x + dr->width - 1, dr->y }, { dr->x + 2, dr->y + dr->height - 1, dr->x + dr->width - 3, dr->y + dr->height - 1 } }; xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments); /* 6: draw the title */ set_font_colors(parent->pm_gc, p->color->text, p->color->background); int text_offset_y = (con->deco_rect.height - config.font.height) / 2; struct Window *win = con->window; if (win == NULL || win->name_x == NULL) { /* this is a non-leaf container, we need to make up a good description */ // TODO: use a good description instead of just "another container" draw_text("another container", strlen("another container"), false, parent->pixmap, parent->pm_gc, con->deco_rect.x + 2, con->deco_rect.y + text_offset_y, con->deco_rect.width - 2); goto copy_pixmaps; } int indent_level = 0, indent_mult = 0; Con *il_parent = parent; if (il_parent->layout != L_STACKED) { while (1) { //DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout); if (il_parent->layout == L_STACKED) indent_level++; if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT) break; il_parent = il_parent->parent; indent_mult++; } } //DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult); int indent_px = (indent_level * 5) * indent_mult; draw_text(win->name_x, win->name_len, win->uses_net_wm_name, parent->pixmap, parent->pm_gc, con->deco_rect.x + 2 + indent_px, con->deco_rect.y + text_offset_y, con->deco_rect.width - 2 - indent_px); /* Since we don’t clip the text at all, it might in some cases be painted * on the border pixels on the right side of a window. Therefore, we draw * the right border again after rendering the text (and the unconnected * lines in border color). */ /* Draw a separator line after every tab (except the last one), so that * tabs can be easily distinguished. */ if (parent->layout == L_TABBED && TAILQ_NEXT(con, nodes) != NULL) { xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border }); } else { xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background }); } xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, parent->pixmap, parent->pm_gc, 4, (xcb_point_t[]){ { dr->x + dr->width - 1, dr->y }, { dr->x + dr->width - 1, dr->y + dr->height }, { dr->x + dr->width - 2, dr->y }, { dr->x + dr->width - 2, dr->y + dr->height } }); xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border }); xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments); copy_pixmaps: xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height); } /* * Recursively calls x_draw_decoration. This cannot be done in x_push_node * because x_push_node uses focus order to recurse (see the comment above) * while drawing the decoration needs to happen in the actual order. * */ void x_deco_recurse(Con *con) { Con *current; bool leaf = TAILQ_EMPTY(&(con->nodes_head)) && TAILQ_EMPTY(&(con->floating_head)); con_state *state = state_for_frame(con->frame); if (!leaf) { TAILQ_FOREACH(current, &(con->nodes_head), nodes) x_deco_recurse(current); TAILQ_FOREACH(current, &(con->floating_head), floating_windows) x_deco_recurse(current); if (state->mapped) xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height); } if ((con->type != CT_ROOT && con->type != CT_OUTPUT) && (!leaf || con->mapped)) x_draw_decoration(con); } /* * This function pushes the properties of each node of the layout tree to * X11 if they have changed (like the map state, position of the window, …). * It recursively traverses all children of the given node. * */ void x_push_node(Con *con) { Con *current; con_state *state; Rect rect = con->rect; //DLOG("Pushing changes for node %p / %s\n", con, con->name); state = state_for_frame(con->frame); if (state->name != NULL) { DLOG("pushing name %s for con %p\n", state->name, con); xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame, XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name); FREE(state->name); } if (con->window == NULL) { /* Calculate the height of all window decorations which will be drawn on to * this frame. */ uint32_t max_y = 0, max_height = 0; TAILQ_FOREACH(current, &(con->nodes_head), nodes) { Rect *dr = &(current->deco_rect); if (dr->y >= max_y && dr->height >= max_height) { max_y = dr->y; max_height = dr->height; } } rect.height = max_y + max_height; if (rect.height == 0) con->mapped = false; } /* reparent the child window (when the window was moved due to a sticky * container) */ if (state->need_reparent && con->window != NULL) { DLOG("Reparenting child window\n"); /* Temporarily set the event masks to XCB_NONE so that we won’t get * UnmapNotify events (otherwise the handler would close the container). * These events are generated automatically when reparenting. */ uint32_t values[] = { XCB_NONE }; xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values); xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values); xcb_reparent_window(conn, con->window->id, con->frame, 0, 0); values[0] = FRAME_EVENT_MASK; xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values); values[0] = CHILD_EVENT_MASK; xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values); state->old_frame = XCB_NONE; state->need_reparent = false; con->ignore_unmap++; DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n", con, con->window->id, con->ignore_unmap); } bool fake_notify = false; /* Set new position if rect changed (and if height > 0) */ if (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 && rect.height > 0) { /* We first create the new pixmap, then render to it, set it as the * background and only afterwards change the window size. This reduces * flickering. */ /* As the pixmap only depends on the size and not on the position, it * is enough to check if width/height have changed. Also, we don’t * create a pixmap at all when the window is actually not visible * (height == 0). */ if ((state->rect.width != rect.width || state->rect.height != rect.height)) { if (con->pixmap == 0) { con->pixmap = xcb_generate_id(conn); con->pm_gc = xcb_generate_id(conn); } else { xcb_free_pixmap(conn, con->pixmap); xcb_free_gc(conn, con->pm_gc); } uint16_t win_depth = root_depth; if (con->window) win_depth = con->window->depth; xcb_create_pixmap(conn, win_depth, con->pixmap, con->frame, rect.width, rect.height); /* For the graphics context, we disable GraphicsExposure events. * Those will be sent when a CopyArea request cannot be fulfilled * properly due to parts of the source being unmapped or otherwise * unavailable. Since we always copy from pixmaps to windows, this * is not a concern for us. */ uint32_t values[] = { 0 }; xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values); con->pixmap_recreated = true; /* Don’t render the decoration for windows inside a stack which are * not visible right now */ if (!con->parent || con->parent->layout != L_STACKED || TAILQ_FIRST(&(con->parent->focus_head)) == con) /* Render the decoration now to make the correct decoration visible * from the very first moment. Later calls will be cached, so this * doesn’t hurt performance. */ x_deco_recurse(con); } DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height); /* flush to ensure that the following commands are sent in a single * buffer and will be processed directly afterwards (the contents of a * window get lost when resizing it, therefore we want to provide it as * fast as possible) */ xcb_flush(conn); xcb_set_window_rect(conn, con->frame, rect); if (con->pixmap != XCB_NONE) xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height); xcb_flush(conn); memcpy(&(state->rect), &rect, sizeof(Rect)); fake_notify = true; } /* dito, but for child windows */ if (con->window != NULL && memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) { DLOG("setting window rect (%d, %d, %d, %d)\n", con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height); xcb_set_window_rect(conn, con->window->id, con->window_rect); memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect)); fake_notify = true; } /* Map if map state changed, also ensure that the child window * is changed if we are mapped *and* in initial state (meaning the * container was empty before, but now got a child). Unmaps are handled in * x_push_node_unmaps(). */ if ((state->mapped != con->mapped || (con->mapped && state->initial)) && con->mapped) { xcb_void_cookie_t cookie; if (con->window != NULL) { /* Set WM_STATE_NORMAL because GTK applications don’t want to * drag & drop if we don’t. Also, xprop(1) needs it. */ long data[] = { XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE }; xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id, A_WM_STATE, A_WM_STATE, 32, 2, data); } uint32_t values[1]; if (!state->child_mapped && con->window != NULL) { cookie = xcb_map_window(conn, con->window->id); /* We are interested in EnterNotifys as soon as the window is * mapped */ values[0] = CHILD_EVENT_MASK; xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values); DLOG("mapping child window (serial %d)\n", cookie.sequence); state->child_mapped = true; } cookie = xcb_map_window(conn, con->frame); values[0] = FRAME_EVENT_MASK; xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values); /* copy the pixmap contents to the frame window immediately after mapping */ if (con->pixmap != XCB_NONE) xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height); xcb_flush(conn); DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence); state->mapped = con->mapped; } state->unmap_now = (state->mapped != con->mapped) && !con->mapped; if (fake_notify) { DLOG("Sending fake configure notify\n"); fake_absolute_configure_notify(con); } /* Handle all children and floating windows of this node. We recurse * in focus order to display the focused client in a stack first when * switching workspaces (reduces flickering). */ TAILQ_FOREACH(current, &(con->focus_head), focused) x_push_node(current); } /* * Same idea as in x_push_node(), but this function only unmaps windows. It is * necessary to split this up to handle new fullscreen clients properly: The * new window needs to be mapped and focus needs to be set *before* the * underlying windows are unmapped. Otherwise, focus will revert to the * PointerRoot and will then be set to the new window, generating unnecessary * FocusIn/FocusOut events. * */ static void x_push_node_unmaps(Con *con) { Con *current; con_state *state; //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name); state = state_for_frame(con->frame); /* map/unmap if map state changed, also ensure that the child window * is changed if we are mapped *and* in initial state (meaning the * container was empty before, but now got a child) */ if (state->unmap_now) { xcb_void_cookie_t cookie; if (con->window != NULL) { /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */ long data[] = { XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE }; xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id, A_WM_STATE, A_WM_STATE, 32, 2, data); } cookie = xcb_unmap_window(conn, con->frame); DLOG("unmapping container (serial %d)\n", cookie.sequence); /* we need to increase ignore_unmap for this container (if it * contains a window) and for every window "under" this one which * contains a window */ if (con->window != NULL) { con->ignore_unmap++; DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap); } state->mapped = con->mapped; } /* handle all children and floating windows of this node */ TAILQ_FOREACH(current, &(con->nodes_head), nodes) x_push_node_unmaps(current); TAILQ_FOREACH(current, &(con->floating_head), floating_windows) x_push_node_unmaps(current); } /* * Pushes all changes (state of each node, see x_push_node() and the window * stack) to X11. * * NOTE: We need to push the stack first so that the windows have the correct * stacking order. This is relevant for workspace switching where we map the * windows because mapping may generate EnterNotify events. When they are * generated in the wrong order, this will cause focus problems when switching * workspaces. * */ void x_push_changes(Con *con) { con_state *state; xcb_query_pointer_cookie_t pointercookie; /* If we need to warp later, we request the pointer position as soon as possible */ if (warp_to) { pointercookie = xcb_query_pointer(conn, root); } DLOG("-- PUSHING WINDOW STACK --\n"); //DLOG("Disabling EnterNotify\n"); uint32_t values[1] = { XCB_NONE }; CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) { if (state->mapped) xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values); } //DLOG("Done, EnterNotify disabled\n"); bool order_changed = false; bool stacking_changed = false; /* count first, necessary to (re)allocate memory for the bottom-to-top * stack afterwards */ int cnt = 0; CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) if (state->con && state->con->window) cnt++; if (cnt != btt_stack_num) { btt_stack = srealloc(btt_stack, sizeof(xcb_window_t) * cnt); btt_stack_num = cnt; } xcb_window_t *walk = btt_stack; /* X11 correctly represents the stack if we push it from bottom to top */ CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) { if (state->con && state->con->window) memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t)); //DLOG("stack: 0x%08x\n", state->id); con_state *prev = CIRCLEQ_PREV(state, state); con_state *old_prev = CIRCLEQ_PREV(state, old_state); if (prev != old_prev) order_changed = true; if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) { stacking_changed = true; //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id); uint32_t mask = 0; mask |= XCB_CONFIG_WINDOW_SIBLING; mask |= XCB_CONFIG_WINDOW_STACK_MODE; uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE}; xcb_configure_window(conn, prev->id, mask, values); } state->initial = false; } /* If we re-stacked something (or a new window appeared), we need to update * the _NET_CLIENT_LIST_STACKING hint */ if (stacking_changed) ewmh_update_client_list_stacking(btt_stack, btt_stack_num); DLOG("PUSHING CHANGES\n"); x_push_node(con); if (warp_to) { xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL); if (!pointerreply) { ELOG("Could not query pointer position, not warping pointer\n"); } else { int mid_x = warp_to->x + (warp_to->width / 2); int mid_y = warp_to->y + (warp_to->height / 2); Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y); Output *target = get_output_containing(mid_x, mid_y); if (current != target) xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y); } warp_to = NULL; } //DLOG("Re-enabling EnterNotify\n"); values[0] = FRAME_EVENT_MASK; CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) { if (state->mapped) xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values); } //DLOG("Done, EnterNotify re-enabled\n"); x_deco_recurse(con); xcb_window_t to_focus = focused->frame; if (focused->window != NULL) to_focus = focused->window->id; if (focused_id != to_focus) { if (!focused->mapped) { DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name); /* Invalidate focused_id to correctly focus new windows with the same ID */ focused_id = XCB_NONE; } else { bool set_focus = true; if (focused->window != NULL && focused->window->needs_take_focus) { DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n", to_focus, focused, focused->name); send_take_focus(to_focus); set_focus = !focused->window->doesnt_accept_focus; DLOG("set_focus = %d\n", set_focus); } if (set_focus) { DLOG("Updating focus (focused: %p / %s)\n", focused, focused->name); /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get * no focus change events for our own focus changes. We only want * these generated by the clients. */ if (focused->window != NULL) { values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE); xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values); } xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME); if (focused->window != NULL) { values[0] = CHILD_EVENT_MASK; xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values); } ewmh_update_active_window(to_focus); } focused_id = to_focus; } } if (focused_id == XCB_NONE) { DLOG("Still no window focused, better set focus to the root window\n"); xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME); focused_id = root; } xcb_flush(conn); DLOG("ENDING CHANGES\n"); /* Disable EnterWindow events for windows which will be unmapped in * x_push_node_unmaps() now. Unmapping windows happens when switching * workspaces. We want to avoid getting EnterNotifies during that phase * because they would screw up our focus. One of these cases is having a * stack with two windows. If the first window is focused and gets * unmapped, the second one appears under the cursor and therefore gets an * EnterNotify event. */ values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW; CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) { if (!state->unmap_now) continue; xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values); } /* Push all pending unmaps */ x_push_node_unmaps(con); /* save the current stack as old stack */ CIRCLEQ_FOREACH(state, &state_head, state) { CIRCLEQ_REMOVE(&old_state_head, state, old_state); CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state); } //CIRCLEQ_FOREACH(state, &old_state_head, old_state) { // DLOG("old stack: 0x%08x\n", state->id); //} xcb_flush(conn); } /* * Raises the specified container in the internal stack of X windows. The * next call to x_push_changes() will make the change visible in X11. * */ void x_raise_con(Con *con) { con_state *state; state = state_for_frame(con->frame); //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id); CIRCLEQ_REMOVE(&state_head, state, state); CIRCLEQ_INSERT_HEAD(&state_head, state, state); } /* * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways) * of the given name. Used for properly tagging the windows for easily spotting * i3 windows in xwininfo -root -all. * */ void x_set_name(Con *con, const char *name) { struct con_state *state; if ((state = state_for_frame(con->frame)) == NULL) { ELOG("window state not found\n"); return; } FREE(state->name); state->name = sstrdup(name); } /* * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH) * */ void x_set_i3_atoms(void) { xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8, (current_socketpath == NULL ? 0 : strlen(current_socketpath)), current_socketpath); xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8, strlen(current_configpath), current_configpath); xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SHMLOG_PATH, A_UTF8_STRING, 8, strlen(shmlogname), shmlogname); } /* * Set warp_to coordinates. This will trigger on the next call to * x_push_changes(). * */ void x_set_warp_to(Rect *rect) { warp_to = rect; } /* * Applies the given mask to the event mask of every i3 window decoration X11 * window. This is useful to disable EnterNotify while resizing so that focus * is untouched. * */ void x_mask_event_mask(uint32_t mask) { uint32_t values[] = { FRAME_EVENT_MASK & mask }; con_state *state; CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) { if (state->mapped) xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values); } }