/* * vim:ts=4:sw=4:expandtab * * i3bar - an xcb-based status- and ws-bar for i3 * © 2010 Axel Wagner and contributors (see also: LICENSE) * * xcb.c: Communicating with X * */ #include #include #include #include #ifdef XCB_COMPAT #include "xcb_compat.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include "common.h" #include "libi3.h" /* We save the atoms in an easy to access array, indexed by an enum */ enum { #define ATOM_DO(name) name, #include "xcb_atoms.def" NUM_ATOMS }; xcb_intern_atom_cookie_t atom_cookies[NUM_ATOMS]; xcb_atom_t atoms[NUM_ATOMS]; /* Variables, that are the same for all functions at all times */ xcb_connection_t *xcb_connection; int screen; xcb_screen_t *root_screen; xcb_window_t xcb_root; /* selection window for tray support */ static xcb_window_t selwin = XCB_NONE; static xcb_intern_atom_reply_t *tray_reply = NULL; /* This is needed for integration with libi3 */ xcb_connection_t *conn; /* The font we'll use */ static i3Font font; /* Icon size (based on font size) */ int icon_size; /* Overall height of the bar (based on font size) */ int bar_height; /* These are only relevant for XKB, which we only need for grabbing modifiers */ int xkb_base; int mod_pressed = 0; /* Because the statusline is the same on all outputs, we have * global buffer to render it on */ xcb_gcontext_t statusline_ctx; xcb_gcontext_t statusline_clear; xcb_pixmap_t statusline_pm; uint32_t statusline_width; /* Event watchers, to interact with the user */ ev_prepare *xcb_prep; ev_check *xcb_chk; ev_io *xcb_io; ev_io *xkb_io; /* The name of current binding mode */ static mode binding; /* Indicates whether a new binding mode was recently activated */ bool activated_mode = false; /* The parsed colors */ struct xcb_colors_t { uint32_t bar_fg; uint32_t bar_bg; uint32_t sep_fg; uint32_t active_ws_fg; uint32_t active_ws_bg; uint32_t active_ws_border; uint32_t inactive_ws_fg; uint32_t inactive_ws_bg; uint32_t inactive_ws_border; uint32_t urgent_ws_bg; uint32_t urgent_ws_fg; uint32_t urgent_ws_border; uint32_t focus_ws_bg; uint32_t focus_ws_fg; uint32_t focus_ws_border; uint32_t binding_mode_bg; uint32_t binding_mode_fg; uint32_t binding_mode_border; }; struct xcb_colors_t colors; /* Horizontal offset between a workspace label and button borders */ static const int ws_hoff_px = 4; /* Vertical offset between a workspace label and button borders */ static const int ws_voff_px = 3; /* Offset between two workspace buttons */ static const int ws_spacing_px = 1; /* Offset between the statusline and 1) workspace buttons on the left * 2) the tray or screen edge on the right */ static const int sb_hoff_px = 4; /* Additional offset between the tray and the statusline, if the tray is not empty */ static const int tray_loff_px = 2; /* Vertical offset between the bar and a separator */ static const int sep_voff_px = 4; /* We define xcb_request_failed as a macro to include the relevant line number */ #define xcb_request_failed(cookie, err_msg) _xcb_request_failed(cookie, err_msg, __LINE__) int _xcb_request_failed(xcb_void_cookie_t cookie, char *err_msg, int line) { xcb_generic_error_t *err; if ((err = xcb_request_check(xcb_connection, cookie)) != NULL) { fprintf(stderr, "[%s:%d] ERROR: %s. X Error Code: %d\n", __FILE__, line, err_msg, err->error_code); return err->error_code; } return 0; } uint32_t get_sep_offset(struct status_block *block) { if (!block->no_separator && block->sep_block_width > 0) return block->sep_block_width / 2 + block->sep_block_width % 2; return 0; } int get_tray_width(struct tc_head *trayclients) { trayclient *trayclient; int tray_width = 0; TAILQ_FOREACH_REVERSE(trayclient, trayclients, tc_head, tailq) { if (!trayclient->mapped) continue; tray_width += icon_size + logical_px(config.tray_padding); } if (tray_width > 0) tray_width += logical_px(tray_loff_px); return tray_width; } /* * Draws a separator for the given block if necessary. * */ static void draw_separator(uint32_t x, struct status_block *block) { uint32_t sep_offset = get_sep_offset(block); if (TAILQ_NEXT(block, blocks) == NULL || sep_offset == 0) return; uint32_t center_x = x - sep_offset; if (config.separator_symbol == NULL) { /* Draw a classic one pixel, vertical separator. */ uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_LINE_WIDTH; uint32_t values[] = {colors.sep_fg, colors.bar_bg, logical_px(1)}; xcb_change_gc(xcb_connection, statusline_ctx, mask, values); xcb_poly_line(xcb_connection, XCB_COORD_MODE_ORIGIN, statusline_pm, statusline_ctx, 2, (xcb_point_t[]){{center_x, logical_px(sep_voff_px)}, {center_x, bar_height - logical_px(sep_voff_px)}}); } else { /* Draw a custom separator. */ uint32_t separator_x = MAX(x - block->sep_block_width, center_x - separator_symbol_width / 2); set_font_colors(statusline_ctx, colors.sep_fg, colors.bar_bg); draw_text(config.separator_symbol, statusline_pm, statusline_ctx, separator_x, logical_px(ws_voff_px), x - separator_x); } } /* * Redraws the statusline to the buffer * */ void refresh_statusline(bool use_short_text) { struct status_block *block; uint32_t old_statusline_width = statusline_width; statusline_width = 0; /* Predict the text width of all blocks (in pixels). */ TAILQ_FOREACH(block, &statusline_head, blocks) { /* Try to use the shorter text if necessary and possible. */ if (use_short_text && block->short_text != NULL) { I3STRING_FREE(block->full_text); block->full_text = i3string_copy(block->short_text); } if (i3string_get_num_bytes(block->full_text) == 0) continue; block->width = predict_text_width(block->full_text); /* Compute offset and append for text aligment in min_width. */ if (block->min_width <= block->width) { block->x_offset = 0; block->x_append = 0; } else { uint32_t padding_width = block->min_width - block->width; switch (block->align) { case ALIGN_LEFT: block->x_append = padding_width; break; case ALIGN_RIGHT: block->x_offset = padding_width; break; case ALIGN_CENTER: block->x_offset = padding_width / 2; block->x_append = padding_width / 2 + padding_width % 2; break; } } /* If this is not the last block, add some pixels for a separator. */ if (TAILQ_NEXT(block, blocks) != NULL) statusline_width += block->sep_block_width; statusline_width += block->width + block->x_offset + block->x_append; } /* If the statusline is bigger than our screen we need to make sure that * the pixmap provides enough space, so re-allocate if the width grew */ if (statusline_width > root_screen->width_in_pixels && statusline_width > old_statusline_width) realloc_sl_buffer(); /* Clear the statusline pixmap. */ xcb_rectangle_t rect = {0, 0, MAX(root_screen->width_in_pixels, statusline_width), bar_height}; xcb_poly_fill_rectangle(xcb_connection, statusline_pm, statusline_clear, 1, &rect); /* Draw the text of each block. */ uint32_t x = 0; TAILQ_FOREACH(block, &statusline_head, blocks) { if (i3string_get_num_bytes(block->full_text) == 0) continue; uint32_t fg_color; /* If this block is urgent, draw it with the defined color and border. */ if (block->urgent) { fg_color = colors.urgent_ws_fg; uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND; /* Draw the background */ uint32_t bg_color = colors.urgent_ws_bg; uint32_t bg_values[] = {bg_color, bg_color}; xcb_change_gc(xcb_connection, statusline_ctx, mask, bg_values); /* The urgent background “overshoots” by 2 px so that the text that * is printed onto it will not be look so cut off. */ xcb_rectangle_t bg_rect = {x - logical_px(2), logical_px(1), block->width + logical_px(4), bar_height - logical_px(2)}; xcb_poly_fill_rectangle(xcb_connection, statusline_pm, statusline_ctx, 1, &bg_rect); } else { fg_color = (block->color ? get_colorpixel(block->color) : colors.bar_fg); } set_font_colors(statusline_ctx, fg_color, colors.bar_bg); draw_text(block->full_text, statusline_pm, statusline_ctx, x + block->x_offset, logical_px(ws_voff_px), block->width); x += block->width + block->sep_block_width + block->x_offset + block->x_append; /* If this is not the last block, draw a separator. */ draw_separator(x, block); } } /* * Hides all bars (unmaps them) * */ void hide_bars(void) { if ((config.hide_on_modifier == M_DOCK) || (config.hidden_state == S_SHOW && config.hide_on_modifier == M_HIDE)) { return; } i3_output *walk; SLIST_FOREACH(walk, outputs, slist) { if (!walk->active) { continue; } xcb_unmap_window(xcb_connection, walk->bar); } stop_child(); } /* * Unhides all bars (maps them) * */ void unhide_bars(void) { if (config.hide_on_modifier != M_HIDE) { return; } i3_output *walk; xcb_void_cookie_t cookie; uint32_t mask; uint32_t values[5]; cont_child(); SLIST_FOREACH(walk, outputs, slist) { if (walk->bar == XCB_NONE) { continue; } mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT | XCB_CONFIG_WINDOW_STACK_MODE; values[0] = walk->rect.x; if (config.position == POS_TOP) values[1] = walk->rect.y; else values[1] = walk->rect.y + walk->rect.h - bar_height; values[2] = walk->rect.w; values[3] = bar_height; values[4] = XCB_STACK_MODE_ABOVE; DLOG("Reconfiguring window for output %s to %d,%d\n", walk->name, values[0], values[1]); cookie = xcb_configure_window_checked(xcb_connection, walk->bar, mask, values); if (xcb_request_failed(cookie, "Could not reconfigure window")) { exit(EXIT_FAILURE); } xcb_map_window(xcb_connection, walk->bar); } } /* * Parse the colors into a format that we can use * */ void init_colors(const struct xcb_color_strings_t *new_colors) { #define PARSE_COLOR(name, def) \ do { \ colors.name = get_colorpixel(new_colors->name ? new_colors->name : def); \ } while (0) PARSE_COLOR(bar_fg, "#FFFFFF"); PARSE_COLOR(bar_bg, "#000000"); PARSE_COLOR(sep_fg, "#666666"); PARSE_COLOR(active_ws_fg, "#FFFFFF"); PARSE_COLOR(active_ws_bg, "#333333"); PARSE_COLOR(active_ws_border, "#333333"); PARSE_COLOR(inactive_ws_fg, "#888888"); PARSE_COLOR(inactive_ws_bg, "#222222"); PARSE_COLOR(inactive_ws_border, "#333333"); PARSE_COLOR(urgent_ws_fg, "#FFFFFF"); PARSE_COLOR(urgent_ws_bg, "#900000"); PARSE_COLOR(urgent_ws_border, "#2f343a"); PARSE_COLOR(focus_ws_fg, "#FFFFFF"); PARSE_COLOR(focus_ws_bg, "#285577"); PARSE_COLOR(focus_ws_border, "#4c7899"); #undef PARSE_COLOR #define PARSE_COLOR_FALLBACK(name, fallback) \ do { \ colors.name = new_colors->name ? get_colorpixel(new_colors->name) : colors.fallback; \ } while (0) /* For the binding mode indicator colors, we don't hardcode a default. * Instead, we fall back to urgent_ws_* colors. */ PARSE_COLOR_FALLBACK(binding_mode_fg, urgent_ws_fg); PARSE_COLOR_FALLBACK(binding_mode_bg, urgent_ws_bg); PARSE_COLOR_FALLBACK(binding_mode_border, urgent_ws_border); #undef PARSE_COLOR_FALLBACK init_tray_colors(); xcb_flush(xcb_connection); } /* * Handle a button press event (i.e. a mouse click on one of our bars). * We determine, whether the click occured on a workspace button or if the scroll- * wheel was used and change the workspace appropriately * */ void handle_button(xcb_button_press_event_t *event) { /* Determine, which bar was clicked */ i3_output *walk; xcb_window_t bar = event->event; SLIST_FOREACH(walk, outputs, slist) { if (walk->bar == bar) { break; } } if (walk == NULL) { DLOG("Unknown bar clicked!\n"); return; } int32_t x = event->event_x >= 0 ? event->event_x : 0; int32_t original_x = x; DLOG("Got button %d\n", event->detail); int workspace_width = 0; i3_ws *cur_ws = NULL, *clicked_ws = NULL, *ws_walk; TAILQ_FOREACH(ws_walk, walk->workspaces, tailq) { int w = 2 * logical_px(ws_hoff_px) + 2 * logical_px(1) + ws_walk->name_width; if (x >= workspace_width && x <= workspace_width + w) clicked_ws = ws_walk; if (ws_walk->visible) cur_ws = ws_walk; workspace_width += w; if (TAILQ_NEXT(ws_walk, tailq) != NULL) workspace_width += logical_px(ws_spacing_px); } if (x > workspace_width && child_want_click_events()) { /* If the child asked for click events, * check if a status block has been clicked. */ int tray_width = get_tray_width(walk->trayclients); int block_x = 0, last_block_x; int offset = walk->rect.w - statusline_width - tray_width - logical_px(sb_hoff_px); x = original_x - offset; if (x >= 0 && (size_t)x < statusline_width) { struct status_block *block; int sep_offset_remainder = 0; TAILQ_FOREACH(block, &statusline_head, blocks) { if (i3string_get_num_bytes(block->full_text) == 0) continue; last_block_x = block_x; block_x += block->width + block->x_offset + block->x_append + get_sep_offset(block) + sep_offset_remainder; if (x <= block_x && x >= last_block_x) { send_block_clicked(event->detail, block->name, block->instance, event->root_x, event->root_y); return; } sep_offset_remainder = block->sep_block_width - get_sep_offset(block); } } x = original_x; } /* If a custom command was specified for this mouse button, it overrides * the default behavior. */ binding_t *binding; TAILQ_FOREACH(binding, &(config.bindings), bindings) { if (binding->input_code != event->detail) continue; i3_send_msg(I3_IPC_MESSAGE_TYPE_COMMAND, binding->command); return; } if (cur_ws == NULL) { DLOG("No workspace active?\n"); return; } switch (event->detail) { case 4: /* Mouse wheel up. We select the previous ws, if any. * If there is no more workspace, don’t even send the workspace * command, otherwise (with workspace auto_back_and_forth) we’d end * up on the wrong workspace. */ if (cur_ws == TAILQ_FIRST(walk->workspaces)) return; cur_ws = TAILQ_PREV(cur_ws, ws_head, tailq); break; case 5: /* Mouse wheel down. We select the next ws, if any. * If there is no more workspace, don’t even send the workspace * command, otherwise (with workspace auto_back_and_forth) we’d end * up on the wrong workspace. */ if (cur_ws == TAILQ_LAST(walk->workspaces, ws_head)) return; cur_ws = TAILQ_NEXT(cur_ws, tailq); break; case 1: cur_ws = clicked_ws; /* if no workspace was clicked, focus our currently visible * workspace if it is not already focused */ if (cur_ws == NULL) { TAILQ_FOREACH(cur_ws, walk->workspaces, tailq) { if (cur_ws->visible && !cur_ws->focused) break; } } /* if there is nothing to focus, we are done */ if (cur_ws == NULL) return; break; default: return; } /* To properly handle workspace names with double quotes in them, we need * to escape the double quotes. Unfortunately, that’s rather ugly in C: We * first count the number of double quotes, then we allocate a large enough * buffer, then we copy character by character. */ int num_quotes = 0; size_t namelen = 0; const char *utf8_name = cur_ws->canonical_name; for (const char *walk = utf8_name; *walk != '\0'; walk++) { if (*walk == '"' || *walk == '\\') num_quotes++; /* While we’re looping through the name anyway, we can save one * strlen(). */ namelen++; } const size_t len = namelen + strlen("workspace \"\"") + 1; char *buffer = scalloc(len + num_quotes, 1); strncpy(buffer, "workspace \"", strlen("workspace \"")); size_t inpos, outpos; for (inpos = 0, outpos = strlen("workspace \""); inpos < namelen; inpos++, outpos++) { if (utf8_name[inpos] == '"' || utf8_name[inpos] == '\\') { buffer[outpos] = '\\'; outpos++; } buffer[outpos] = utf8_name[inpos]; } buffer[outpos] = '"'; i3_send_msg(I3_IPC_MESSAGE_TYPE_COMMAND, buffer); free(buffer); } /* * Handle visibility notifications: when none of the bars are visible, e.g. * if windows are in fullscreen on each output, suspend the child process. * */ static void handle_visibility_notify(xcb_visibility_notify_event_t *event) { bool visible = (event->state != XCB_VISIBILITY_FULLY_OBSCURED); int num_visible = 0; i3_output *output; SLIST_FOREACH(output, outputs, slist) { if (!output->active) { continue; } if (output->bar == event->window) { if (output->visible == visible) { return; } output->visible = visible; } num_visible += output->visible; } if (num_visible == 0) { stop_child(); } else if (num_visible == visible) { /* Wake the child only when transitioning from 0 to 1 visible bar. * We cannot transition from 0 to 2 or more visible bars at once since * visibility events are delivered to each window separately */ cont_child(); } } /* * Adjusts the size of the tray window and alignment of the tray clients by * configuring their respective x coordinates. To be called when mapping or * unmapping a tray client window. * */ static void configure_trayclients(void) { trayclient *trayclient; i3_output *output; SLIST_FOREACH(output, outputs, slist) { if (!output->active) continue; int clients = 0; TAILQ_FOREACH_REVERSE(trayclient, output->trayclients, tc_head, tailq) { if (!trayclient->mapped) continue; clients++; DLOG("Configuring tray window %08x to x=%d\n", trayclient->win, output->rect.w - (clients * (icon_size + logical_px(config.tray_padding)))); uint32_t x = output->rect.w - (clients * (icon_size + logical_px(config.tray_padding))); xcb_configure_window(xcb_connection, trayclient->win, XCB_CONFIG_WINDOW_X, &x); } } } /* * Handles ClientMessages (messages sent from another client directly to us). * * At the moment, only the tray window will receive client messages. All * supported client messages currently are _NET_SYSTEM_TRAY_OPCODE. * */ static void handle_client_message(xcb_client_message_event_t *event) { if (event->type == atoms[_NET_SYSTEM_TRAY_OPCODE] && event->format == 32) { DLOG("_NET_SYSTEM_TRAY_OPCODE received\n"); /* event->data.data32[0] is the timestamp */ uint32_t op = event->data.data32[1]; uint32_t mask; uint32_t values[2]; if (op == SYSTEM_TRAY_REQUEST_DOCK) { xcb_window_t client = event->data.data32[2]; /* Listen for PropertyNotify events to get the most recent value of * the XEMBED_MAPPED atom, also listen for UnmapNotify events */ mask = XCB_CW_EVENT_MASK; values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE | XCB_EVENT_MASK_STRUCTURE_NOTIFY; xcb_change_window_attributes(xcb_connection, client, mask, values); /* Request the _XEMBED_INFO property. The XEMBED specification * (which is referred by the tray specification) says this *has* to * be set, but VLC does not set it… */ bool map_it = true; int xe_version = 1; xcb_get_property_cookie_t xembedc; xcb_generic_error_t *error; xembedc = xcb_get_property(xcb_connection, 0, client, atoms[_XEMBED_INFO], XCB_GET_PROPERTY_TYPE_ANY, 0, 2 * 32); xcb_get_property_reply_t *xembedr = xcb_get_property_reply(xcb_connection, xembedc, &error); if (error != NULL) { ELOG("Error getting _XEMBED_INFO property: error_code %d\n", error->error_code); free(error); return; } if (xembedr != NULL && xembedr->length != 0) { DLOG("xembed format = %d, len = %d\n", xembedr->format, xembedr->length); uint32_t *xembed = xcb_get_property_value(xembedr); DLOG("xembed version = %d\n", xembed[0]); DLOG("xembed flags = %d\n", xembed[1]); map_it = ((xembed[1] & XEMBED_MAPPED) == XEMBED_MAPPED); xe_version = xembed[0]; if (xe_version > 1) xe_version = 1; free(xembedr); } else { ELOG("Window %08x violates the XEMBED protocol, _XEMBED_INFO not set\n", client); } DLOG("X window %08x requested docking\n", client); i3_output *walk, *output = NULL; SLIST_FOREACH(walk, outputs, slist) { if (!walk->active) continue; if (config.tray_output) { if ((strcasecmp(walk->name, config.tray_output) != 0) && (!walk->primary || strcasecmp("primary", config.tray_output) != 0)) continue; } DLOG("using output %s\n", walk->name); output = walk; break; } /* In case of tray_output == primary and there is no primary output * configured, we fall back to the first available output. */ if (output == NULL && config.tray_output && strcasecmp("primary", config.tray_output) == 0) { SLIST_FOREACH(walk, outputs, slist) { if (!walk->active) continue; DLOG("Falling back to output %s because no primary output is configured\n", walk->name); output = walk; break; } } if (output == NULL) { ELOG("No output found\n"); return; } xcb_reparent_window(xcb_connection, client, output->bar, output->rect.w - icon_size - logical_px(config.tray_padding), logical_px(config.tray_padding)); /* We reconfigure the window to use a reasonable size. The systray * specification explicitly says: * Tray icons may be assigned any size by the system tray, and * should do their best to cope with any size effectively */ mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT; values[0] = icon_size; values[1] = icon_size; xcb_configure_window(xcb_connection, client, mask, values); /* send the XEMBED_EMBEDDED_NOTIFY message */ void *event = scalloc(32, 1); xcb_client_message_event_t *ev = event; ev->response_type = XCB_CLIENT_MESSAGE; ev->window = client; ev->type = atoms[_XEMBED]; ev->format = 32; ev->data.data32[0] = XCB_CURRENT_TIME; ev->data.data32[1] = atoms[XEMBED_EMBEDDED_NOTIFY]; ev->data.data32[2] = output->bar; ev->data.data32[3] = xe_version; xcb_send_event(xcb_connection, 0, client, XCB_EVENT_MASK_NO_EVENT, (char *)ev); free(event); /* Put the client inside the save set. Upon termination (whether * killed or normal exit does not matter) of i3bar, these clients * will be correctly reparented to their most closest living * ancestor. Without this, tray icons might die when i3bar * exits/crashes. */ xcb_change_save_set(xcb_connection, XCB_SET_MODE_INSERT, client); trayclient *tc = smalloc(sizeof(trayclient)); tc->win = client; tc->xe_version = xe_version; tc->mapped = false; TAILQ_INSERT_TAIL(output->trayclients, tc, tailq); if (map_it) { DLOG("Mapping dock client\n"); xcb_map_window(xcb_connection, client); } else { DLOG("Not mapping dock client yet\n"); } /* Trigger an update to copy the statusline text to the appropriate * position */ configure_trayclients(); draw_bars(false); } } } /* * Handles DestroyNotify events by removing the tray client from the data * structure. According to the XEmbed protocol, this is one way for a tray * client to finish the protocol. After this event is received, there is no * further interaction with the tray client. * * See: http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html * */ static void handle_destroy_notify(xcb_destroy_notify_event_t *event) { DLOG("DestroyNotify for window = %08x, event = %08x\n", event->window, event->event); i3_output *walk; SLIST_FOREACH(walk, outputs, slist) { if (!walk->active) continue; DLOG("checking output %s\n", walk->name); trayclient *trayclient; TAILQ_FOREACH(trayclient, walk->trayclients, tailq) { if (trayclient->win != event->window) continue; DLOG("Removing tray client with window ID %08x\n", event->window); TAILQ_REMOVE(walk->trayclients, trayclient, tailq); /* Trigger an update, we now have more space for the statusline */ configure_trayclients(); draw_bars(false); return; } } } /* * Handles MapNotify events. These events happen when a tray client shows its * window. We respond by realigning the tray clients. * */ static void handle_map_notify(xcb_map_notify_event_t *event) { DLOG("MapNotify for window = %08x, event = %08x\n", event->window, event->event); i3_output *walk; SLIST_FOREACH(walk, outputs, slist) { if (!walk->active) continue; DLOG("checking output %s\n", walk->name); trayclient *trayclient; TAILQ_FOREACH(trayclient, walk->trayclients, tailq) { if (trayclient->win != event->window) continue; DLOG("Tray client mapped (window ID %08x). Adjusting tray.\n", event->window); trayclient->mapped = true; /* Trigger an update, we now have more space for the statusline */ configure_trayclients(); draw_bars(false); return; } } } /* * Handles UnmapNotify events. These events happen when a tray client hides its * window. We respond by realigning the tray clients. * */ static void handle_unmap_notify(xcb_unmap_notify_event_t *event) { DLOG("UnmapNotify for window = %08x, event = %08x\n", event->window, event->event); i3_output *walk; SLIST_FOREACH(walk, outputs, slist) { if (!walk->active) continue; DLOG("checking output %s\n", walk->name); trayclient *trayclient; TAILQ_FOREACH(trayclient, walk->trayclients, tailq) { if (trayclient->win != event->window) continue; DLOG("Tray client unmapped (window ID %08x). Adjusting tray.\n", event->window); trayclient->mapped = false; /* Trigger an update, we now have more space for the statusline */ configure_trayclients(); draw_bars(false); return; } } } /* * Handle PropertyNotify messages. Currently only the _XEMBED_INFO property is * handled, which tells us whether a dock client should be mapped or unmapped. * */ static void handle_property_notify(xcb_property_notify_event_t *event) { DLOG("PropertyNotify\n"); if (event->atom == atoms[_XEMBED_INFO] && event->state == XCB_PROPERTY_NEW_VALUE) { DLOG("xembed_info updated\n"); trayclient *trayclient = NULL, *walk; i3_output *o_walk; SLIST_FOREACH(o_walk, outputs, slist) { if (!o_walk->active) continue; TAILQ_FOREACH(walk, o_walk->trayclients, tailq) { if (walk->win != event->window) continue; trayclient = walk; break; } if (trayclient) break; } if (!trayclient) { ELOG("PropertyNotify received for unknown window %08x\n", event->window); return; } xcb_get_property_cookie_t xembedc; xembedc = xcb_get_property_unchecked(xcb_connection, 0, trayclient->win, atoms[_XEMBED_INFO], XCB_GET_PROPERTY_TYPE_ANY, 0, 2 * 32); xcb_get_property_reply_t *xembedr = xcb_get_property_reply(xcb_connection, xembedc, NULL); if (xembedr == NULL || xembedr->length == 0) { DLOG("xembed_info unset\n"); return; } DLOG("xembed format = %d, len = %d\n", xembedr->format, xembedr->length); uint32_t *xembed = xcb_get_property_value(xembedr); DLOG("xembed version = %d\n", xembed[0]); DLOG("xembed flags = %d\n", xembed[1]); bool map_it = ((xembed[1] & XEMBED_MAPPED) == XEMBED_MAPPED); DLOG("map state now %d\n", map_it); if (trayclient->mapped && !map_it) { /* need to unmap the window */ xcb_unmap_window(xcb_connection, trayclient->win); } else if (!trayclient->mapped && map_it) { /* need to map the window */ xcb_map_window(xcb_connection, trayclient->win); } free(xembedr); } } /* * Handle ConfigureRequests by denying them and sending the client a * ConfigureNotify with its actual size. * */ static void handle_configure_request(xcb_configure_request_event_t *event) { DLOG("ConfigureRequest for window = %08x\n", event->window); trayclient *trayclient; i3_output *output; SLIST_FOREACH(output, outputs, slist) { if (!output->active) continue; int clients = 0; TAILQ_FOREACH_REVERSE(trayclient, output->trayclients, tc_head, tailq) { if (!trayclient->mapped) continue; clients++; if (trayclient->win != event->window) continue; xcb_rectangle_t rect; rect.x = output->rect.w - (clients * (icon_size + logical_px(config.tray_padding))); rect.y = logical_px(config.tray_padding); rect.width = icon_size; rect.height = icon_size; DLOG("This is a tray window. x = %d\n", rect.x); fake_configure_notify(xcb_connection, rect, event->window, 0); return; } } DLOG("WARNING: Could not find corresponding tray window.\n"); } /* * This function is called immediately before the main loop locks. We flush xcb * then (and only then) * */ void xcb_prep_cb(struct ev_loop *loop, ev_prepare *watcher, int revents) { xcb_flush(xcb_connection); } /* * This function is called immediately after the main loop locks, so when one * of the watchers registered an event. * We check whether an X-Event arrived and handle it. * */ void xcb_chk_cb(struct ev_loop *loop, ev_check *watcher, int revents) { xcb_generic_event_t *event; if (xcb_connection_has_error(xcb_connection)) { ELOG("X11 connection was closed unexpectedly - maybe your X server terminated / crashed?\n"); exit(1); } while ((event = xcb_poll_for_event(xcb_connection)) != NULL) { int type = (event->response_type & ~0x80); if (type == xkb_base && xkb_base > -1) { DLOG("received an xkb event\n"); xcb_xkb_state_notify_event_t *state = (xcb_xkb_state_notify_event_t *)event; if (state->xkbType == XCB_XKB_STATE_NOTIFY) { int modstate = state->mods & config.modifier; #define DLOGMOD(modmask, status) \ do { \ switch (modmask) { \ case ShiftMask: \ DLOG("ShiftMask got " #status "!\n"); \ break; \ case ControlMask: \ DLOG("ControlMask got " #status "!\n"); \ break; \ case Mod1Mask: \ DLOG("Mod1Mask got " #status "!\n"); \ break; \ case Mod2Mask: \ DLOG("Mod2Mask got " #status "!\n"); \ break; \ case Mod3Mask: \ DLOG("Mod3Mask got " #status "!\n"); \ break; \ case Mod4Mask: \ DLOG("Mod4Mask got " #status "!\n"); \ break; \ case Mod5Mask: \ DLOG("Mod5Mask got " #status "!\n"); \ break; \ } \ } while (0) if (modstate != mod_pressed) { if (modstate == 0) { DLOGMOD(config.modifier, released); if (!activated_mode) hide_bars(); } else { DLOGMOD(config.modifier, pressed); activated_mode = false; unhide_bars(); } mod_pressed = modstate; } #undef DLOGMOD } free(event); continue; } switch (type) { case XCB_VISIBILITY_NOTIFY: /* Visibility change: a bar is [un]obscured by other window */ handle_visibility_notify((xcb_visibility_notify_event_t *)event); break; case XCB_EXPOSE: /* Expose-events happen, when the window needs to be redrawn */ redraw_bars(); break; case XCB_BUTTON_PRESS: /* Button press events are mouse buttons clicked on one of our bars */ handle_button((xcb_button_press_event_t *)event); break; case XCB_CLIENT_MESSAGE: /* Client messages are used for client-to-client communication, for * example system tray widgets talk to us directly via client messages. */ handle_client_message((xcb_client_message_event_t *)event); break; case XCB_DESTROY_NOTIFY: /* DestroyNotify signifies the end of the XEmbed protocol */ handle_destroy_notify((xcb_destroy_notify_event_t *)event); break; case XCB_UNMAP_NOTIFY: /* UnmapNotify is received when a tray client hides its window. */ handle_unmap_notify((xcb_unmap_notify_event_t *)event); break; case XCB_MAP_NOTIFY: handle_map_notify((xcb_map_notify_event_t *)event); break; case XCB_PROPERTY_NOTIFY: /* PropertyNotify */ handle_property_notify((xcb_property_notify_event_t *)event); break; case XCB_CONFIGURE_REQUEST: /* ConfigureRequest, sent by a tray child */ handle_configure_request((xcb_configure_request_event_t *)event); break; } free(event); } } /* * Dummy callback. We only need this, so that the prepare and check watchers * are triggered * */ void xcb_io_cb(struct ev_loop *loop, ev_io *watcher, int revents) { } /* * Early initialization of the connection to X11: Everything which does not * depend on 'config'. * */ char *init_xcb_early() { /* FIXME: xcb_connect leaks memory */ xcb_connection = xcb_connect(NULL, &screen); if (xcb_connection_has_error(xcb_connection)) { ELOG("Cannot open display\n"); exit(EXIT_FAILURE); } conn = xcb_connection; DLOG("Connected to xcb\n"); /* We have to request the atoms we need */ #define ATOM_DO(name) atom_cookies[name] = xcb_intern_atom(xcb_connection, 0, strlen(#name), #name); #include "xcb_atoms.def" root_screen = xcb_aux_get_screen(xcb_connection, screen); xcb_root = root_screen->root; /* We draw the statusline to a seperate pixmap, because it looks the same on all bars and * this way, we can choose to crop it */ uint32_t mask = XCB_GC_FOREGROUND; uint32_t vals[] = {colors.bar_bg, colors.bar_bg}; statusline_clear = xcb_generate_id(xcb_connection); xcb_void_cookie_t clear_ctx_cookie = xcb_create_gc_checked(xcb_connection, statusline_clear, xcb_root, mask, vals); statusline_ctx = xcb_generate_id(xcb_connection); xcb_void_cookie_t sl_ctx_cookie = xcb_create_gc_checked(xcb_connection, statusline_ctx, xcb_root, 0, NULL); statusline_pm = xcb_generate_id(xcb_connection); xcb_void_cookie_t sl_pm_cookie = xcb_create_pixmap_checked(xcb_connection, root_screen->root_depth, statusline_pm, xcb_root, root_screen->width_in_pixels, root_screen->height_in_pixels); /* The various watchers to communicate with xcb */ xcb_io = smalloc(sizeof(ev_io)); xcb_prep = smalloc(sizeof(ev_prepare)); xcb_chk = smalloc(sizeof(ev_check)); ev_io_init(xcb_io, &xcb_io_cb, xcb_get_file_descriptor(xcb_connection), EV_READ); ev_prepare_init(xcb_prep, &xcb_prep_cb); ev_check_init(xcb_chk, &xcb_chk_cb); ev_io_start(main_loop, xcb_io); ev_prepare_start(main_loop, xcb_prep); ev_check_start(main_loop, xcb_chk); /* Now we get the atoms and save them in a nice data structure */ get_atoms(); char *path = root_atom_contents("I3_SOCKET_PATH", xcb_connection, screen); if (xcb_request_failed(sl_pm_cookie, "Could not allocate statusline buffer") || xcb_request_failed(clear_ctx_cookie, "Could not allocate statusline buffer clearcontext") || xcb_request_failed(sl_ctx_cookie, "Could not allocate statusline buffer context")) { exit(EXIT_FAILURE); } return path; } /* * Register for xkb keyevents. To grab modifiers without blocking other applications from receiving key events * involving that modifier, we sadly have to use xkb which is not yet fully supported * in xcb. * */ void register_xkb_keyevents() { const xcb_query_extension_reply_t *extreply; extreply = xcb_get_extension_data(conn, &xcb_xkb_id); if (!extreply->present) { ELOG("xkb is not present on this server\n"); exit(EXIT_FAILURE); } DLOG("initializing xcb-xkb\n"); xcb_xkb_use_extension(conn, XCB_XKB_MAJOR_VERSION, XCB_XKB_MINOR_VERSION); xcb_xkb_select_events(conn, XCB_XKB_ID_USE_CORE_KBD, XCB_XKB_EVENT_TYPE_STATE_NOTIFY, 0, XCB_XKB_EVENT_TYPE_STATE_NOTIFY, 0xff, 0xff, NULL); xkb_base = extreply->first_event; } /* * Deregister from xkb keyevents. * */ void deregister_xkb_keyevents() { xcb_xkb_select_events(conn, XCB_XKB_ID_USE_CORE_KBD, 0, 0, 0, 0xff, 0xff, NULL); } /* * Initialization which depends on 'config' being usable. Called after the * configuration has arrived. * */ void init_xcb_late(char *fontname) { if (fontname == NULL) fontname = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1"; /* Load the font */ font = load_font(fontname, true); set_font(&font); DLOG("Calculated font height: %d\n", font.height); bar_height = font.height + 2 * logical_px(ws_voff_px); icon_size = bar_height - 2 * logical_px(config.tray_padding); if (config.separator_symbol) separator_symbol_width = predict_text_width(config.separator_symbol); xcb_flush(xcb_connection); if (config.hide_on_modifier == M_HIDE) register_xkb_keyevents(); } /* * Inform clients waiting for a new _NET_SYSTEM_TRAY that we took the * selection. * */ static void send_tray_clientmessage(void) { uint8_t buffer[32] = {0}; xcb_client_message_event_t *ev = (xcb_client_message_event_t *)buffer; ev->response_type = XCB_CLIENT_MESSAGE; ev->window = xcb_root; ev->type = atoms[MANAGER]; ev->format = 32; ev->data.data32[0] = XCB_CURRENT_TIME; ev->data.data32[1] = tray_reply->atom; ev->data.data32[2] = selwin; xcb_send_event(xcb_connection, 0, xcb_root, 0xFFFFFF, (char *)buffer); } /* * Initializes tray support by requesting the appropriate _NET_SYSTEM_TRAY atom * for the X11 display we are running on, then acquiring the selection for this * atom. Afterwards, tray clients will send ClientMessages to our window. * */ void init_tray(void) { DLOG("Initializing system tray functionality\n"); /* request the tray manager atom for the X11 display we are running on */ char atomname[strlen("_NET_SYSTEM_TRAY_S") + 11]; snprintf(atomname, strlen("_NET_SYSTEM_TRAY_S") + 11, "_NET_SYSTEM_TRAY_S%d", screen); xcb_intern_atom_cookie_t tray_cookie; if (tray_reply == NULL) tray_cookie = xcb_intern_atom(xcb_connection, 0, strlen(atomname), atomname); /* tray support: we need a window to own the selection */ selwin = xcb_generate_id(xcb_connection); uint32_t selmask = XCB_CW_OVERRIDE_REDIRECT; uint32_t selval[] = {1}; xcb_create_window(xcb_connection, root_screen->root_depth, selwin, xcb_root, -1, -1, 1, 1, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT, root_screen->root_visual, selmask, selval); uint32_t orientation = _NET_SYSTEM_TRAY_ORIENTATION_HORZ; /* set the atoms */ xcb_change_property(xcb_connection, XCB_PROP_MODE_REPLACE, selwin, atoms[_NET_SYSTEM_TRAY_ORIENTATION], XCB_ATOM_CARDINAL, 32, 1, &orientation); init_tray_colors(); if (tray_reply == NULL) { if (!(tray_reply = xcb_intern_atom_reply(xcb_connection, tray_cookie, NULL))) { ELOG("Could not get atom %s\n", atomname); exit(EXIT_FAILURE); } } xcb_set_selection_owner(xcb_connection, selwin, tray_reply->atom, XCB_CURRENT_TIME); /* Verify that we have the selection */ xcb_get_selection_owner_cookie_t selcookie; xcb_get_selection_owner_reply_t *selreply; selcookie = xcb_get_selection_owner(xcb_connection, tray_reply->atom); if (!(selreply = xcb_get_selection_owner_reply(xcb_connection, selcookie, NULL))) { ELOG("Could not get selection owner for %s\n", atomname); exit(EXIT_FAILURE); } if (selreply->owner != selwin) { ELOG("Could not set the %s selection. " "Maybe another tray is already running?\n", atomname); /* NOTE that this error is not fatal. We just can’t provide tray * functionality */ free(selreply); return; } send_tray_clientmessage(); } /* * We need to set the _NET_SYSTEM_TRAY_COLORS atom on the tray selection window * to make GTK+ 3 applets with symbolic icons visible. If the colors are unset, * they assume a light background. * See also https://bugzilla.gnome.org/show_bug.cgi?id=679591 * */ void init_tray_colors(void) { /* Convert colors.bar_fg (#rrggbb) to 16-bit RGB */ const char *bar_fg = (config.colors.bar_fg ? config.colors.bar_fg : "#FFFFFF"); DLOG("Setting bar_fg = %s as _NET_SYSTEM_TRAY_COLORS\n", bar_fg); char strgroups[3][3] = {{bar_fg[1], bar_fg[2], '\0'}, {bar_fg[3], bar_fg[4], '\0'}, {bar_fg[5], bar_fg[6], '\0'}}; const uint8_t r = strtol(strgroups[0], NULL, 16); const uint8_t g = strtol(strgroups[1], NULL, 16); const uint8_t b = strtol(strgroups[2], NULL, 16); const uint16_t r16 = ((uint16_t)r << 8) | r; const uint16_t g16 = ((uint16_t)g << 8) | g; const uint16_t b16 = ((uint16_t)b << 8) | b; const uint32_t tray_colors[12] = { r16, g16, b16, /* foreground color */ r16, g16, b16, /* error color */ r16, g16, b16, /* warning color */ r16, g16, b16, /* success color */ }; xcb_change_property(xcb_connection, XCB_PROP_MODE_REPLACE, selwin, atoms[_NET_SYSTEM_TRAY_COLORS], XCB_ATOM_CARDINAL, 32, 12, tray_colors); } /* * Cleanup the xcb stuff. * Called once, before the program terminates. * */ void clean_xcb(void) { i3_output *o_walk; free_workspaces(); SLIST_FOREACH(o_walk, outputs, slist) { destroy_window(o_walk); FREE(o_walk->trayclients); FREE(o_walk->workspaces); FREE(o_walk->name); } FREE_SLIST(outputs, i3_output); FREE(outputs); xcb_flush(xcb_connection); xcb_aux_sync(xcb_connection); xcb_disconnect(xcb_connection); ev_check_stop(main_loop, xcb_chk); ev_prepare_stop(main_loop, xcb_prep); ev_io_stop(main_loop, xcb_io); FREE(xcb_chk); FREE(xcb_prep); FREE(xcb_io); } /* * Get the earlier requested atoms and save them in the prepared data structure * */ void get_atoms(void) { xcb_intern_atom_reply_t *reply; #define ATOM_DO(name) \ reply = xcb_intern_atom_reply(xcb_connection, atom_cookies[name], NULL); \ if (reply == NULL) { \ ELOG("Could not get atom %s\n", #name); \ exit(EXIT_FAILURE); \ } \ atoms[name] = reply->atom; \ free(reply); #include "xcb_atoms.def" DLOG("Got atoms\n"); } /* * Reparents all tray clients of the specified output to the root window. This * is either used when shutting down, when an output appears (xrandr --output * VGA1 --off) or when the primary output changes. * * Applications using the tray will start the protocol from the beginning again * afterwards. * */ void kick_tray_clients(i3_output *output) { if (TAILQ_EMPTY(output->trayclients)) return; trayclient *trayclient; while (!TAILQ_EMPTY(output->trayclients)) { trayclient = TAILQ_FIRST(output->trayclients); /* Unmap, then reparent (to root) the tray client windows */ xcb_unmap_window(xcb_connection, trayclient->win); xcb_reparent_window(xcb_connection, trayclient->win, xcb_root, 0, 0); /* We remove the trayclient right here. We might receive an UnmapNotify * event afterwards, but better safe than sorry. */ TAILQ_REMOVE(output->trayclients, trayclient, tailq); } /* Fake a DestroyNotify so that Qt re-adds tray icons. * We cannot actually destroy the window because then Qt will not restore * its event mask on the new window. */ uint8_t buffer[32] = {0}; xcb_destroy_notify_event_t *event = (xcb_destroy_notify_event_t *)buffer; event->response_type = XCB_DESTROY_NOTIFY; event->event = selwin; event->window = selwin; xcb_send_event(conn, false, selwin, XCB_EVENT_MASK_STRUCTURE_NOTIFY, (char *)event); send_tray_clientmessage(); } /* * Destroy the bar of the specified output * */ void destroy_window(i3_output *output) { if (output == NULL) { return; } if (output->bar == XCB_NONE) { return; } kick_tray_clients(output); xcb_destroy_window(xcb_connection, output->bar); output->bar = XCB_NONE; } /* * Reallocate the statusline buffer * */ void realloc_sl_buffer(void) { DLOG("Re-allocating statusline buffer, statusline_width = %d, root_screen->width_in_pixels = %d\n", statusline_width, root_screen->width_in_pixels); xcb_free_pixmap(xcb_connection, statusline_pm); statusline_pm = xcb_generate_id(xcb_connection); xcb_void_cookie_t sl_pm_cookie = xcb_create_pixmap_checked(xcb_connection, root_screen->root_depth, statusline_pm, xcb_root, MAX(root_screen->width_in_pixels, statusline_width), bar_height); uint32_t mask = XCB_GC_FOREGROUND; uint32_t vals[2] = {colors.bar_bg, colors.bar_bg}; xcb_free_gc(xcb_connection, statusline_clear); statusline_clear = xcb_generate_id(xcb_connection); xcb_void_cookie_t clear_ctx_cookie = xcb_create_gc_checked(xcb_connection, statusline_clear, xcb_root, mask, vals); mask |= XCB_GC_BACKGROUND; vals[0] = colors.bar_fg; xcb_free_gc(xcb_connection, statusline_ctx); statusline_ctx = xcb_generate_id(xcb_connection); xcb_void_cookie_t sl_ctx_cookie = xcb_create_gc_checked(xcb_connection, statusline_ctx, xcb_root, mask, vals); if (xcb_request_failed(sl_pm_cookie, "Could not allocate statusline buffer") || xcb_request_failed(clear_ctx_cookie, "Could not allocate statusline buffer clearcontext") || xcb_request_failed(sl_ctx_cookie, "Could not allocate statusline buffer context")) { exit(EXIT_FAILURE); } } /* Strut partial tells i3 where to reserve space for i3bar. This is determined * by the `position` bar config directive. */ xcb_void_cookie_t config_strut_partial(i3_output *output) { /* A local struct to save the strut_partial property */ struct { uint32_t left; uint32_t right; uint32_t top; uint32_t bottom; uint32_t left_start_y; uint32_t left_end_y; uint32_t right_start_y; uint32_t right_end_y; uint32_t top_start_x; uint32_t top_end_x; uint32_t bottom_start_x; uint32_t bottom_end_x; } __attribute__((__packed__)) strut_partial; memset(&strut_partial, 0, sizeof(strut_partial)); switch (config.position) { case POS_NONE: break; case POS_TOP: strut_partial.top = bar_height; strut_partial.top_start_x = output->rect.x; strut_partial.top_end_x = output->rect.x + output->rect.w; break; case POS_BOT: strut_partial.bottom = bar_height; strut_partial.bottom_start_x = output->rect.x; strut_partial.bottom_end_x = output->rect.x + output->rect.w; break; } return xcb_change_property(xcb_connection, XCB_PROP_MODE_REPLACE, output->bar, atoms[_NET_WM_STRUT_PARTIAL], XCB_ATOM_CARDINAL, 32, 12, &strut_partial); } /* * Reconfigure all bars and create new bars for recently activated outputs * */ void reconfig_windows(bool redraw_bars) { uint32_t mask; uint32_t values[5]; static bool tray_configured = false; i3_output *walk; SLIST_FOREACH(walk, outputs, slist) { if (!walk->active) { /* If an output is not active, we destroy its bar */ /* FIXME: Maybe we rather want to unmap? */ DLOG("Destroying window for output %s\n", walk->name); destroy_window(walk); continue; } if (walk->bar == XCB_NONE) { DLOG("Creating window for output %s\n", walk->name); walk->bar = xcb_generate_id(xcb_connection); walk->buffer = xcb_generate_id(xcb_connection); mask = XCB_CW_BACK_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK; /* Black background */ values[0] = colors.bar_bg; /* If hide_on_modifier is set to hide or invisible mode, i3 is not supposed to manage our bar windows */ values[1] = (config.hide_on_modifier == M_DOCK ? 0 : 1); /* We enable the following EventMask fields: * EXPOSURE, to get expose events (we have to re-draw then) * SUBSTRUCTURE_REDIRECT, to get ConfigureRequests when the tray * child windows use ConfigureWindow * BUTTON_PRESS, to handle clicks on the workspace buttons * */ values[2] = XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT | XCB_EVENT_MASK_BUTTON_PRESS; if (config.hide_on_modifier == M_DOCK) { /* If the bar is normally visible, catch visibility change events to suspend * the status process when the bar is obscured by full-screened windows. */ values[2] |= XCB_EVENT_MASK_VISIBILITY_CHANGE; walk->visible = true; } xcb_void_cookie_t win_cookie = xcb_create_window_checked(xcb_connection, root_screen->root_depth, walk->bar, xcb_root, walk->rect.x, walk->rect.y + walk->rect.h - bar_height, walk->rect.w, bar_height, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT, root_screen->root_visual, mask, values); /* The double-buffer we use to render stuff off-screen */ xcb_void_cookie_t pm_cookie = xcb_create_pixmap_checked(xcb_connection, root_screen->root_depth, walk->buffer, walk->bar, walk->rect.w, bar_height); /* Set the WM_CLASS and WM_NAME (we don't need UTF-8) atoms */ xcb_void_cookie_t class_cookie; class_cookie = xcb_change_property(xcb_connection, XCB_PROP_MODE_REPLACE, walk->bar, XCB_ATOM_WM_CLASS, XCB_ATOM_STRING, 8, (strlen("i3bar") + 1) * 2, "i3bar\0i3bar\0"); char *name; sasprintf(&name, "i3bar for output %s", walk->name); xcb_void_cookie_t name_cookie; name_cookie = xcb_change_property(xcb_connection, XCB_PROP_MODE_REPLACE, walk->bar, XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(name), name); free(name); /* We want dock windows (for now). When override_redirect is set, i3 is ignoring * this one */ xcb_void_cookie_t dock_cookie = xcb_change_property(xcb_connection, XCB_PROP_MODE_REPLACE, walk->bar, atoms[_NET_WM_WINDOW_TYPE], XCB_ATOM_ATOM, 32, 1, (unsigned char *)&atoms[_NET_WM_WINDOW_TYPE_DOCK]); xcb_void_cookie_t strut_cookie = config_strut_partial(walk); /* We also want a graphics context for the bars (it defines the properties * with which we draw to them) */ walk->bargc = xcb_generate_id(xcb_connection); xcb_void_cookie_t gc_cookie = xcb_create_gc_checked(xcb_connection, walk->bargc, walk->bar, 0, NULL); /* We finally map the bar (display it on screen), unless the modifier-switch is on */ xcb_void_cookie_t map_cookie; if (config.hide_on_modifier == M_DOCK) { map_cookie = xcb_map_window_checked(xcb_connection, walk->bar); } if (xcb_request_failed(win_cookie, "Could not create window") || xcb_request_failed(pm_cookie, "Could not create pixmap") || xcb_request_failed(dock_cookie, "Could not set dock mode") || xcb_request_failed(class_cookie, "Could not set WM_CLASS") || xcb_request_failed(name_cookie, "Could not set WM_NAME") || xcb_request_failed(strut_cookie, "Could not set strut") || xcb_request_failed(gc_cookie, "Could not create graphical context") || ((config.hide_on_modifier == M_DOCK) && xcb_request_failed(map_cookie, "Could not map window"))) { exit(EXIT_FAILURE); } const char *tray_output = (config.tray_output ? config.tray_output : SLIST_FIRST(outputs)->name); if (!tray_configured && strcasecmp(tray_output, "none") != 0) { /* Configuration sanity check: ensure this i3bar instance handles the output on * which the tray should appear (e.g. don’t initialize a tray if tray_output == * VGA-1 but output == [HDMI-1]). */ i3_output *output; SLIST_FOREACH(output, outputs, slist) { if (strcasecmp(output->name, tray_output) == 0 || (strcasecmp(tray_output, "primary") == 0 && output->primary)) { init_tray(); break; } } tray_configured = true; } } else { /* We already have a bar, so we just reconfigure it */ mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT | XCB_CONFIG_WINDOW_STACK_MODE; values[0] = walk->rect.x; if (config.position == POS_TOP) values[1] = walk->rect.y; else values[1] = walk->rect.y + walk->rect.h - bar_height; values[2] = walk->rect.w; values[3] = bar_height; values[4] = XCB_STACK_MODE_ABOVE; DLOG("Reconfiguring strut partial property for output %s\n", walk->name); xcb_void_cookie_t strut_cookie = config_strut_partial(walk); DLOG("Destroying buffer for output %s\n", walk->name); xcb_free_pixmap(xcb_connection, walk->buffer); DLOG("Reconfiguring window for output %s to %d,%d\n", walk->name, values[0], values[1]); xcb_void_cookie_t cfg_cookie = xcb_configure_window_checked(xcb_connection, walk->bar, mask, values); mask = XCB_CW_OVERRIDE_REDIRECT; values[0] = (config.hide_on_modifier == M_DOCK ? 0 : 1); DLOG("Changing window attribute override_redirect for output %s to %d\n", walk->name, values[0]); xcb_void_cookie_t chg_cookie = xcb_change_window_attributes(xcb_connection, walk->bar, mask, values); DLOG("Recreating buffer for output %s\n", walk->name); xcb_void_cookie_t pm_cookie = xcb_create_pixmap_checked(xcb_connection, root_screen->root_depth, walk->buffer, walk->bar, walk->rect.w, bar_height); xcb_void_cookie_t map_cookie, umap_cookie; if (redraw_bars) { /* Unmap the window, and draw it again when in dock mode */ umap_cookie = xcb_unmap_window_checked(xcb_connection, walk->bar); if (config.hide_on_modifier == M_DOCK) { cont_child(); map_cookie = xcb_map_window_checked(xcb_connection, walk->bar); } else { stop_child(); } if (config.hide_on_modifier == M_HIDE) { /* Switching to hide mode, register for keyevents */ register_xkb_keyevents(); } else { /* Switching to dock/invisible mode, deregister from keyevents */ deregister_xkb_keyevents(); } } if (xcb_request_failed(cfg_cookie, "Could not reconfigure window") || xcb_request_failed(chg_cookie, "Could not change window") || xcb_request_failed(pm_cookie, "Could not create pixmap") || xcb_request_failed(strut_cookie, "Could not set strut") || (redraw_bars && (xcb_request_failed(umap_cookie, "Could not unmap window") || (config.hide_on_modifier == M_DOCK && xcb_request_failed(map_cookie, "Could not map window"))))) { exit(EXIT_FAILURE); } } } } /* * Render the bars, with buttons and statusline * */ void draw_bars(bool unhide) { DLOG("Drawing bars...\n"); int workspace_width = 0; /* Is the currently-rendered statusline using short_text items? */ bool rendered_statusline_is_short = false; refresh_statusline(false); i3_output *outputs_walk; SLIST_FOREACH(outputs_walk, outputs, slist) { if (!outputs_walk->active) { DLOG("Output %s inactive, skipping...\n", outputs_walk->name); continue; } if (outputs_walk->bar == XCB_NONE) { /* Oh shit, an active output without an own bar. Create it now! */ reconfig_windows(false); } /* First things first: clear the backbuffer */ uint32_t color = colors.bar_bg; xcb_change_gc(xcb_connection, outputs_walk->bargc, XCB_GC_FOREGROUND, &color); xcb_rectangle_t rect = {0, 0, outputs_walk->rect.w, bar_height}; xcb_poly_fill_rectangle(xcb_connection, outputs_walk->buffer, outputs_walk->bargc, 1, &rect); if (!config.disable_ws) { i3_ws *ws_walk; TAILQ_FOREACH(ws_walk, outputs_walk->workspaces, tailq) { DLOG("Drawing button for WS %s at x = %d, len = %d\n", i3string_as_utf8(ws_walk->name), workspace_width, ws_walk->name_width); uint32_t fg_color = colors.inactive_ws_fg; uint32_t bg_color = colors.inactive_ws_bg; uint32_t border_color = colors.inactive_ws_border; if (ws_walk->visible) { if (!ws_walk->focused) { fg_color = colors.active_ws_fg; bg_color = colors.active_ws_bg; border_color = colors.active_ws_border; } else { fg_color = colors.focus_ws_fg; bg_color = colors.focus_ws_bg; border_color = colors.focus_ws_border; } } if (ws_walk->urgent) { DLOG("WS %s is urgent!\n", i3string_as_utf8(ws_walk->name)); fg_color = colors.urgent_ws_fg; bg_color = colors.urgent_ws_bg; border_color = colors.urgent_ws_border; unhide = true; } uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND; uint32_t vals_border[] = {border_color, border_color}; xcb_change_gc(xcb_connection, outputs_walk->bargc, mask, vals_border); xcb_rectangle_t rect_border = {workspace_width, logical_px(1), ws_walk->name_width + 2 * logical_px(ws_hoff_px) + 2 * logical_px(1), font.height + 2 * logical_px(ws_voff_px) - 2 * logical_px(1)}; xcb_poly_fill_rectangle(xcb_connection, outputs_walk->buffer, outputs_walk->bargc, 1, &rect_border); uint32_t vals[] = {bg_color, bg_color}; xcb_change_gc(xcb_connection, outputs_walk->bargc, mask, vals); xcb_rectangle_t rect = {workspace_width + logical_px(1), 2 * logical_px(1), ws_walk->name_width + 2 * logical_px(ws_hoff_px), font.height + 2 * logical_px(ws_voff_px) - 4 * logical_px(1)}; xcb_poly_fill_rectangle(xcb_connection, outputs_walk->buffer, outputs_walk->bargc, 1, &rect); set_font_colors(outputs_walk->bargc, fg_color, bg_color); draw_text(ws_walk->name, outputs_walk->buffer, outputs_walk->bargc, workspace_width + logical_px(ws_hoff_px) + logical_px(1), logical_px(ws_voff_px), ws_walk->name_width); workspace_width += 2 * logical_px(ws_hoff_px) + 2 * logical_px(1) + ws_walk->name_width; if (TAILQ_NEXT(ws_walk, tailq) != NULL) workspace_width += logical_px(ws_spacing_px); } } if (binding.name && !config.disable_binding_mode_indicator) { workspace_width += logical_px(ws_spacing_px); uint32_t fg_color = colors.binding_mode_fg; uint32_t bg_color = colors.binding_mode_bg; uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND; uint32_t vals_border[] = {colors.binding_mode_border, colors.binding_mode_border}; xcb_change_gc(xcb_connection, outputs_walk->bargc, mask, vals_border); xcb_rectangle_t rect_border = {workspace_width, logical_px(1), binding.width + 2 * logical_px(ws_hoff_px) + 2 * logical_px(1), font.height + 2 * logical_px(ws_voff_px) - 2 * logical_px(1)}; xcb_poly_fill_rectangle(xcb_connection, outputs_walk->buffer, outputs_walk->bargc, 1, &rect_border); uint32_t vals[] = {bg_color, bg_color}; xcb_change_gc(xcb_connection, outputs_walk->bargc, mask, vals); xcb_rectangle_t rect = {workspace_width + logical_px(1), 2 * logical_px(1), binding.width + 2 * logical_px(ws_hoff_px), font.height + 2 * logical_px(ws_voff_px) - 4 * logical_px(1)}; xcb_poly_fill_rectangle(xcb_connection, outputs_walk->buffer, outputs_walk->bargc, 1, &rect); set_font_colors(outputs_walk->bargc, fg_color, bg_color); draw_text(binding.name, outputs_walk->buffer, outputs_walk->bargc, workspace_width + logical_px(ws_hoff_px) + logical_px(1), logical_px(ws_voff_px), binding.width); unhide = true; workspace_width += 2 * logical_px(ws_hoff_px) + 2 * logical_px(1) + binding.width; } if (!TAILQ_EMPTY(&statusline_head)) { DLOG("Printing statusline!\n"); int tray_width = get_tray_width(outputs_walk->trayclients); uint32_t max_statusline_width = outputs_walk->rect.w - workspace_width - tray_width - 2 * logical_px(sb_hoff_px); /* If the statusline is too long, try to use short texts. */ if (statusline_width > max_statusline_width) { /* If the currently rendered statusline is long, render a short status line */ refresh_statusline(true); rendered_statusline_is_short = true; } else if (rendered_statusline_is_short) { /* If the currently rendered statusline is short, render a long status line */ refresh_statusline(false); rendered_statusline_is_short = false; } /* Luckily we already prepared a seperate pixmap containing the rendered * statusline, we just have to copy the relevant parts to the relevant * position */ int visible_statusline_width = MIN(statusline_width, max_statusline_width); xcb_copy_area(xcb_connection, statusline_pm, outputs_walk->buffer, outputs_walk->bargc, (int16_t)(statusline_width - visible_statusline_width), 0, (int16_t)(outputs_walk->rect.w - tray_width - logical_px(sb_hoff_px) - visible_statusline_width), 0, (int16_t)visible_statusline_width, (int16_t)bar_height); } workspace_width = 0; } /* Assure the bar is hidden/unhidden according to the specified hidden_state and mode */ if (mod_pressed || config.hidden_state == S_SHOW || unhide) { unhide_bars(); } else if (config.hide_on_modifier == M_HIDE) { hide_bars(); } redraw_bars(); } /* * Redraw the bars, i.e. simply copy the buffer to the barwindow * */ void redraw_bars(void) { i3_output *outputs_walk; SLIST_FOREACH(outputs_walk, outputs, slist) { if (!outputs_walk->active) { continue; } xcb_copy_area(xcb_connection, outputs_walk->buffer, outputs_walk->bar, outputs_walk->bargc, 0, 0, 0, 0, outputs_walk->rect.w, outputs_walk->rect.h); xcb_flush(xcb_connection); } } /* * Set the current binding mode * */ void set_current_mode(struct mode *current) { I3STRING_FREE(binding.name); binding = *current; activated_mode = binding.name != NULL; return; }