/* * 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 "common.h" #include #include #include #include #include #include #include #include #ifdef I3_ASAN_ENABLED #include #endif #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; static xcb_cursor_t cursor; /* 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; xcb_visualtype_t *visual_type; uint8_t depth; xcb_colormap_t colormap; /* 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; bool mod_pressed = 0; /* Event watchers, to interact with the user */ ev_prepare *xcb_prep; 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 output in which the tray should be displayed. */ static i3_output *output_for_tray; /* The parsed colors */ struct xcb_colors_t { color_t bar_fg; color_t bar_bg; color_t sep_fg; color_t focus_bar_fg; color_t focus_bar_bg; color_t focus_sep_fg; color_t active_ws_fg; color_t active_ws_bg; color_t active_ws_border; color_t inactive_ws_fg; color_t inactive_ws_bg; color_t inactive_ws_border; color_t urgent_ws_bg; color_t urgent_ws_fg; color_t urgent_ws_border; color_t focus_ws_bg; color_t focus_ws_fg; color_t focus_ws_border; color_t binding_mode_bg; color_t binding_mode_fg; color_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; /* Cached width of the custom separator if one was set */ int separator_symbol_width; 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; } static 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; } static 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(i3_output *output, uint32_t x, struct status_block *block, bool use_focus_colors) { color_t sep_fg = (use_focus_colors ? colors.focus_sep_fg : colors.sep_fg); color_t bar_bg = (use_focus_colors ? colors.focus_bar_bg : colors.bar_bg); 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. */ draw_util_rectangle(&output->statusline_buffer, sep_fg, center_x, logical_px(sep_voff_px), logical_px(1), bar_height - 2 * 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); draw_util_text(config.separator_symbol, &output->statusline_buffer, sep_fg, bar_bg, separator_x, logical_px(ws_voff_px), x - separator_x); } } static uint32_t predict_statusline_length(bool use_short_text) { uint32_t width = 0; struct status_block *block; TAILQ_FOREACH (block, &statusline_head, blocks) { i3String *text = block->full_text; struct status_block_render_desc *render = &block->full_render; if (use_short_text && block->short_text != NULL) { text = block->short_text; render = &block->short_render; } if (i3string_get_num_bytes(text) == 0) continue; render->width = predict_text_width(text); if (block->border) render->width += logical_px(block->border_left + block->border_right); /* Compute offset and append for text aligment in min_width. */ if (block->min_width <= render->width) { render->x_offset = 0; render->x_append = 0; } else { uint32_t padding_width = block->min_width - render->width; switch (block->align) { case ALIGN_LEFT: render->x_append = padding_width; break; case ALIGN_RIGHT: render->x_offset = padding_width; break; case ALIGN_CENTER: render->x_offset = padding_width / 2; render->x_append = padding_width / 2 + padding_width % 2; break; } } width += render->width + render->x_offset + render->x_append; /* If this is not the last block, add some pixels for a separator. */ if (TAILQ_NEXT(block, blocks) != NULL) width += block->sep_block_width; } return width; } /* * Redraws the statusline to the output's statusline_buffer */ static void draw_statusline(i3_output *output, uint32_t clip_left, bool use_focus_colors, bool use_short_text) { struct status_block *block; color_t bar_color = (use_focus_colors ? colors.focus_bar_bg : colors.bar_bg); draw_util_clear_surface(&output->statusline_buffer, bar_color); /* Use unsigned integer wraparound to clip off the left side. * For example, if clip_left is 75, then x will start at the very large * number INT_MAX-75, which is way outside the surface dimensions. Drawing * to that x position is a no-op which XCB and Cairo safely ignore. Once x moves * up by 75 and goes past INT_MAX, it will wrap around again to 0, and we start * actually rendering content to the surface. */ uint32_t x = 0 - clip_left; /* Draw the text of each block */ TAILQ_FOREACH (block, &statusline_head, blocks) { i3String *text = block->full_text; struct status_block_render_desc *render = &block->full_render; if (use_short_text && block->short_text != NULL) { text = block->short_text; render = &block->short_render; } if (i3string_get_num_bytes(text) == 0) continue; color_t fg_color; if (block->urgent) { fg_color = colors.urgent_ws_fg; } else if (block->color) { fg_color = draw_util_hex_to_color(block->color); } else if (use_focus_colors) { fg_color = colors.focus_bar_fg; } else { fg_color = colors.bar_fg; } color_t bg_color = bar_color; int full_render_width = render->width + render->x_offset + render->x_append; int has_border = block->border ? 1 : 0; if (block->border || block->background || block->urgent) { /* Let's determine the colors first. */ color_t border_color = bar_color; if (block->urgent) { border_color = colors.urgent_ws_border; bg_color = colors.urgent_ws_bg; } else { if (block->border) border_color = draw_util_hex_to_color(block->border); if (block->background) bg_color = draw_util_hex_to_color(block->background); } /* Draw the border. */ draw_util_rectangle(&output->statusline_buffer, border_color, x, logical_px(1), full_render_width, bar_height - logical_px(2)); /* Draw the background. */ draw_util_rectangle(&output->statusline_buffer, bg_color, x + has_border * logical_px(block->border_left), logical_px(1) + has_border * logical_px(block->border_top), full_render_width - has_border * logical_px(block->border_right + block->border_left), bar_height - has_border * logical_px(block->border_bottom + block->border_top) - logical_px(2)); } draw_util_text(text, &output->statusline_buffer, fg_color, bg_color, x + render->x_offset + has_border * logical_px(block->border_left), bar_height / 2 - font.height / 2, render->width - has_border * logical_px(block->border_left + block->border_right)); x += full_render_width; /* If this is not the last block, draw a separator. */ if (TAILQ_NEXT(block, blocks) != NULL) { x += block->sep_block_width; draw_separator(output, x, block, use_focus_colors); } } } /* * Hides all bars (unmaps them) * */ static 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.id); } stop_child(); } /* * Unhides all bars (maps them) * */ static 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.id == 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.id, mask, values); if (xcb_request_failed(cookie, "Could not reconfigure window")) { exit(EXIT_FAILURE); } xcb_map_window(xcb_connection, walk->bar.id); } } /* * 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 = draw_util_hex_to_color(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 ? draw_util_hex_to_color(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); /* Similarly, for unspecified focused bar colors, we fall back to the * regular bar colors. */ PARSE_COLOR_FALLBACK(focus_bar_fg, bar_fg); PARSE_COLOR_FALLBACK(focus_bar_bg, bar_bg); PARSE_COLOR_FALLBACK(focus_sep_fg, sep_fg); #undef PARSE_COLOR_FALLBACK init_tray_colors(); xcb_flush(xcb_connection); } static bool execute_custom_command(xcb_keycode_t input_code, bool event_is_release) { binding_t *binding; TAILQ_FOREACH (binding, &(config.bindings), bindings) { if ((binding->input_code != input_code) || (binding->release != event_is_release)) continue; i3_send_msg(I3_IPC_MESSAGE_TYPE_RUN_COMMAND, binding->command); return true; } return false; } static void child_handle_button(xcb_button_press_event_t *event, i3_output *output, uint32_t statusline_x) { if (statusline_x > (uint32_t)output->statusline_width) { return; } /* x of the start of the current block relative to the statusline. */ uint32_t last_block_x = 0; struct status_block *block; TAILQ_FOREACH (block, &statusline_head, blocks) { i3String *text; struct status_block_render_desc *render; if (output->statusline_short_text && block->short_text != NULL) { text = block->short_text; render = &block->short_render; } else { text = block->full_text; render = &block->full_render; } if (i3string_get_num_bytes(text) == 0) { continue; } /* Include the whole block in our calculations: when min_width is * specified, we have to take padding width into account. */ const uint32_t full_render_width = render->width + render->x_offset + render->x_append; /* x of the click event relative to the current block. */ const uint32_t relative_x = statusline_x - last_block_x; if (relative_x <= full_render_width) { send_block_clicked(event->detail, block->name, block->instance, event->root_x, event->root_y, relative_x, event->event_y, full_render_width, bar_height, event->state); return; } last_block_x += full_render_width + block->sep_block_width; if (last_block_x > statusline_x) { /* Click was on a separator. */ return; } } } /* * Predict the width of a workspace button or the current binding mode indicator. * */ static int predict_button_width(int name_width) { return MAX(name_width + 2 * logical_px(ws_hoff_px) + 2 * logical_px(1), logical_px(config.ws_min_width)); } /* * Handle a button press event (i.e. a mouse click on one of our bars). * We determine, whether the click occurred on a workspace button or if the scroll- * wheel was used and change the workspace appropriately * */ static 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.id == bar) { break; } } if (walk == NULL) { DLOG("Unknown bar clicked!\n"); return; } DLOG("Got button %d\n", event->detail); /* During button release events, only check for custom commands. */ const bool event_is_release = (event->response_type & ~0x80) == XCB_BUTTON_RELEASE; int32_t x = event->event_x >= 0 ? event->event_x : 0; int workspace_width = 0; i3_ws *cur_ws = NULL, *clicked_ws = NULL, *ws_walk; TAILQ_FOREACH (ws_walk, walk->workspaces, tailq) { int w = predict_button_width(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 (child_want_click_events() && x > workspace_width) { const int tray_width = get_tray_width(walk->trayclients); /* Calculate the horizontal coordinate (x) of the start of the * statusline by subtracting its width and the width of the tray from * the bar width. */ const int offset = walk->rect.w - walk->statusline_width - tray_width - logical_px((tray_width > 0) * sb_hoff_px); if (x >= offset) { /* Click was after the start of the statusline, return to avoid * executing any other actions even if a click event is not * produced eventually. */ if (!event_is_release) { /* x of the click event relative to the start of the * statusline. */ const uint32_t statusline_x = x - offset; child_handle_button(event, walk, statusline_x); } return; } } /* If a custom command was specified for this mouse button, it overrides * the default behavior. */ if (execute_custom_command(event->detail, event_is_release) || event_is_release) { return; } if (cur_ws == NULL) { DLOG("No workspace active?\n"); return; } switch (event->detail) { case XCB_BUTTON_SCROLL_UP: case XCB_BUTTON_SCROLL_LEFT: /* 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 XCB_BUTTON_SCROLL_DOWN: case XCB_BUTTON_SCROLL_RIGHT: /* 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); memcpy(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_RUN_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.id == event->window) { output->visible = visible; } num_visible += output->visible; } if (num_visible == 0) { stop_child(); } else { cont_child(); } } /* * Comparison function to sort trayclients in ascending alphanumeric order * according to their class. * */ static int reorder_trayclients_cmp(const void *_a, const void *_b) { trayclient *a = *((trayclient **)_a); trayclient *b = *((trayclient **)_b); int result = strcasecmp_nullable(a->class_class, b->class_class); return result != 0 ? result : strcasecmp_nullable(a->class_instance, b->class_instance); } /* * 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) { i3_output *output; SLIST_FOREACH (output, outputs, slist) { if (!output->active) { continue; } int count = 0; trayclient *client; TAILQ_FOREACH (client, output->trayclients, tailq) { if (client->mapped) { count++; } } int idx = 0; trayclient **trayclients = smalloc(count * sizeof(trayclient *)); TAILQ_FOREACH (client, output->trayclients, tailq) { if (client->mapped) { trayclients[idx++] = client; } } qsort(trayclients, count, sizeof(trayclient *), reorder_trayclients_cmp); uint32_t x = output->rect.w; for (idx = count; idx > 0; idx--) { x -= icon_size + logical_px(config.tray_padding); DLOG("Configuring tray window %08x to x=%d\n", trayclients[idx - 1]->win, x); xcb_configure_window(xcb_connection, trayclients[idx - 1]->win, XCB_CONFIG_WINDOW_X, &x); } free(trayclients); } } static trayclient *trayclient_and_output_from_window(xcb_window_t win, i3_output **output) { i3_output *o_walk; SLIST_FOREACH (o_walk, outputs, slist) { if (!o_walk->active) { continue; } trayclient *client; TAILQ_FOREACH (client, o_walk->trayclients, tailq) { if (client->win == win) { if (output) { *output = o_walk; } return client; } } } return NULL; } static trayclient *trayclient_from_window(xcb_window_t win) { return trayclient_and_output_from_window(win, NULL); } static void trayclient_update_class(trayclient *client) { xcb_get_property_reply_t *prop = xcb_get_property_reply( conn, xcb_get_property_unchecked( xcb_connection, false, client->win, XCB_ATOM_WM_CLASS, XCB_ATOM_STRING, 0, 32), NULL); if (prop == NULL || xcb_get_property_value_length(prop) == 0) { DLOG("WM_CLASS not set.\n"); free(prop); return; } /* We cannot use asprintf here since this property contains two * null-terminated strings (for compatibility reasons). Instead, we * use strdup() on both strings */ const size_t prop_length = xcb_get_property_value_length(prop); char *new_class = xcb_get_property_value(prop); const size_t class_class_index = strnlen(new_class, prop_length) + 1; free(client->class_instance); free(client->class_class); client->class_instance = sstrndup(new_class, prop_length); if (class_class_index < prop_length) { client->class_class = sstrndup(new_class + class_class_index, prop_length - class_class_index); } else { client->class_class = NULL; } DLOG("WM_CLASS changed to %s (instance), %s (class)\n", client->class_instance, client->class_class); free(prop); } /* * 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[I3_SYNC]) { xcb_window_t window = event->data.data32[0]; uint32_t rnd = event->data.data32[1]; /* Forward the request to i3 via the IPC interface so that all pending * IPC messages are guaranteed to be handled. */ char *payload = NULL; sasprintf(&payload, "{\"rnd\":%d, \"window\":%d}", rnd, window); i3_send_msg(I3_IPC_MESSAGE_TYPE_SYNC, payload); free(payload); } else 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]; mask = XCB_CW_EVENT_MASK; /* Needed to get the most recent value of XEMBED_MAPPED. */ values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE; /* Needed for UnmapNotify events. */ values[0] |= XCB_EVENT_MASK_STRUCTURE_NOTIFY; /* Needed because some tray applications (e.g., VLC) use * override_redirect which causes no ConfigureRequest to be sent. */ values[0] |= XCB_EVENT_MASK_RESIZE_REDIRECT; 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); if (output_for_tray == NULL) { ELOG("No output found for tray\n"); return; } xcb_void_cookie_t rcookie = xcb_reparent_window(xcb_connection, client, output_for_tray->bar.id, output_for_tray->rect.w - icon_size - logical_px(config.tray_padding), logical_px(config.tray_padding)); if (xcb_request_failed(rcookie, "Could not reparent window. Maybe it is using an incorrect depth/visual?")) return; /* 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] = XEMBED_EMBEDDED_NOTIFY; ev->data.data32[2] = output_for_tray->bar.id; 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 = scalloc(1, sizeof(trayclient)); tc->win = client; tc->xe_version = xe_version; tc->mapped = false; TAILQ_INSERT_TAIL(output_for_tray->trayclients, tc, tailq); trayclient_update_class(tc); 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: https://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 *output; trayclient *client = trayclient_and_output_from_window(event->window, &output); if (!client) { DLOG("WARNING: Could not find corresponding tray window.\n"); return; } DLOG("Removing tray client with window ID %08x\n", event->window); TAILQ_REMOVE(output->trayclients, client, tailq); free(client->class_class); free(client->class_instance); FREE(client); /* Trigger an update, we now have more space for the statusline */ configure_trayclients(); draw_bars(false); } /* * 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); trayclient *client = trayclient_from_window(event->window); if (!client) { DLOG("WARNING: Could not find corresponding tray window.\n"); return; } DLOG("Tray client mapped (window ID %08x). Adjusting tray.\n", event->window); client->mapped = true; /* Trigger an update, we now have one extra tray client. */ configure_trayclients(); draw_bars(false); } /* * 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); trayclient *client = trayclient_from_window(event->window); if (!client) { DLOG("WARNING: Could not find corresponding tray window.\n"); return; } DLOG("Tray client unmapped (window ID %08x). Adjusting tray.\n", event->window); client->mapped = false; /* Trigger an update, we now have more space for the statusline */ configure_trayclients(); draw_bars(false); } /* * Handle PropertyNotify messages. * */ 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) { /* _XEMBED_INFO property tells us whether a dock client should be mapped or unmapped. */ DLOG("xembed_info updated\n"); trayclient *client = trayclient_from_window(event->window); if (!client) { 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, client->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 (client->mapped && !map_it) { /* need to unmap the window */ xcb_unmap_window(xcb_connection, client->win); } else if (!client->mapped && map_it) { /* need to map the window */ xcb_map_window(xcb_connection, client->win); } free(xembedr); } else if (event->atom == XCB_ATOM_WM_CLASS) { trayclient *client = trayclient_from_window(event->window); if (client) { trayclient_update_class(client); } } } /* * If a tray client attempts to change its size we deny the request and respond * by telling it its actual size. * */ static void handle_configuration_change(xcb_window_t 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 != 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, window, 0); return; } } DLOG("WARNING: Could not find corresponding tray window.\n"); } static void handle_configure_request(xcb_configure_request_event_t *event) { DLOG("ConfigureRequest for window = %08x\n", event->window); handle_configuration_change(event->window); } static void handle_resize_request(xcb_resize_request_event_t *event) { DLOG("ResizeRequest for window = %08x\n", event->window); handle_configuration_change(event->window); } /* * This function is called immediately before the main loop locks. We check for * events from X11, handle them, then flush our outgoing queue. * */ static void xcb_prep_cb(struct ev_loop *loop, ev_prepare *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"); #ifdef I3_ASAN_ENABLED __lsan_do_leak_check(); #endif exit(1); } while ((event = xcb_poll_for_event(xcb_connection)) != NULL) { if (event->response_type == 0) { xcb_generic_error_t *error = (xcb_generic_error_t *)event; DLOG("Received X11 error, sequence 0x%x, error_code = %d\n", error->sequence, error->error_code); free(event); continue; } 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; const uint32_t mod = (config.modifier & 0xFFFF); const bool new_mod_pressed = (mod != 0 && (state->mods & mod) == mod); if (new_mod_pressed != mod_pressed) { mod_pressed = new_mod_pressed; if (state->xkbType == XCB_XKB_STATE_NOTIFY && config.modifier != XCB_NONE) { if (mod_pressed) { activated_mode = false; unhide_bars(); } else if (!activated_mode) { hide_bars(); } } } 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: if (((xcb_expose_event_t *)event)->count == 0) { /* Expose-events happen, when the window needs to be redrawn */ redraw_bars(); } break; case XCB_BUTTON_RELEASE: 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; case XCB_RESIZE_REQUEST: /* ResizeRequest sent by a tray child using override_redirect. */ handle_resize_request((xcb_resize_request_event_t *)event); break; } free(event); } xcb_flush(xcb_connection); } /* * Dummy callback. We only need this, so that the prepare and check watchers * are triggered * */ static 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(void) { /* 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; depth = root_screen->root_depth; colormap = root_screen->default_colormap; visual_type = config.transparency ? xcb_aux_find_visual_by_attrs(root_screen, -1, 32) : NULL; if (visual_type != NULL) { depth = xcb_aux_get_depth_of_visual(root_screen, visual_type->visual_id); colormap = xcb_generate_id(xcb_connection); xcb_void_cookie_t cm_cookie = xcb_create_colormap_checked(xcb_connection, XCB_COLORMAP_ALLOC_NONE, colormap, xcb_root, visual_type->visual_id); if (xcb_request_failed(cm_cookie, "Could not allocate colormap")) { exit(EXIT_FAILURE); } } else { visual_type = get_visualtype(root_screen); } xcb_cursor_context_t *cursor_ctx; if (xcb_cursor_context_new(conn, root_screen, &cursor_ctx) < 0) { errx(EXIT_FAILURE, "Cannot allocate xcursor context"); } cursor = xcb_cursor_load_cursor(cursor_ctx, "left_ptr"); xcb_cursor_context_free(cursor_ctx); /* The various watchers to communicate with xcb */ xcb_io = smalloc(sizeof(ev_io)); xcb_prep = smalloc(sizeof(ev_prepare)); 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_io_start(main_loop, xcb_io); ev_prepare_start(main_loop, xcb_prep); /* 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); 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. * */ static void register_xkb_keyevents(void) { 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. * */ static void deregister_xkb_keyevents(void) { 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. * */ static 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_BACK_PIXEL | XCB_CW_BORDER_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_COLORMAP; uint32_t selval[] = {root_screen->black_pixel, root_screen->black_pixel, 1, colormap}; xcb_create_window(xcb_connection, depth, selwin, xcb_root, -1, -1, 1, 1, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT, visual_type->visual_id, 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); xcb_change_property(xcb_connection, XCB_PROP_MODE_REPLACE, selwin, atoms[_NET_SYSTEM_TRAY_VISUAL], XCB_ATOM_VISUALID, 32, 1, &visual_type->visual_id); 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; } free(selreply); 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) { free_outputs(); free_font(); xcb_free_cursor(xcb_connection, cursor); xcb_flush(xcb_connection); xcb_aux_sync(xcb_connection); xcb_disconnect(xcb_connection); ev_prepare_stop(main_loop, xcb_prep); ev_io_stop(main_loop, xcb_io); 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); free(trayclient->class_class); free(trayclient->class_instance); /* We remove the trayclient right here. We might receive an UnmapNotify * event afterwards, but better safe than sorry. */ TAILQ_REMOVE(output->trayclients, trayclient, tailq); FREE(trayclient); } /* 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.id == XCB_NONE) { return; } kick_tray_clients(output); xcb_destroy_window(xcb_connection, output->bar.id); output->bar.id = XCB_NONE; } /* Strut partial tells i3 where to reserve space for i3bar. This is determined * by the `position` bar config directive. */ static 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.id, atoms[_NET_WM_STRUT_PARTIAL], XCB_ATOM_CARDINAL, 32, 12, &strut_partial); } /* * Returns the output which should hold the tray, if one exists. * * An output is returned in these scenarios: * 1. A specific output was listed in tray_outputs which is also in the list * of outputs managed by this bar. * 2. No tray_output directive was specified. In this case, we use the first * available output. * 3. 'tray_output primary' was specified. In this case we use the primary * output. * * Three scenarios in which we specifically don't want to use a tray: * 1. 'tray_output none' was specified. * 2. A specific output was listed as a tray_output, but is not one of the * outputs managed by this bar. For example, consider tray_outputs == [VGA-1], * but outputs == [HDMI-1]. * 3. 'tray_output primary' was specified and no output in the list is * primary. */ static i3_output *get_tray_output(void) { i3_output *output = NULL; if (TAILQ_EMPTY(&(config.tray_outputs))) { /* No tray_output specified, use first active output. */ SLIST_FOREACH (output, outputs, slist) { if (output->active) { return output; } } return NULL; } else if (strcasecmp(TAILQ_FIRST(&(config.tray_outputs))->output, "none") == 0) { /* Check for "tray_output none" */ return NULL; } /* If one or more tray_output assignments were specified, we ensure that at * least one of them is actually an output managed by this instance. */ tray_output_t *tray_output; TAILQ_FOREACH (tray_output, &(config.tray_outputs), tray_outputs) { SLIST_FOREACH (output, outputs, slist) { if (output->active && (strcasecmp(output->name, tray_output->output) == 0 || (strcasecmp(tray_output->output, "primary") == 0 && output->primary))) { return output; } } } return NULL; } /* * Reconfigure all bars and create new bars for recently activated outputs * */ void reconfig_windows(bool redraw_bars) { uint32_t mask; uint32_t values[6]; 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.id == XCB_NONE) { DLOG("Creating window for output %s\n", walk->name); xcb_window_t bar_id = xcb_generate_id(xcb_connection); xcb_pixmap_t buffer_id = xcb_generate_id(xcb_connection); xcb_pixmap_t statusline_buffer_id = xcb_generate_id(xcb_connection); mask = XCB_CW_BACK_PIXEL | XCB_CW_BORDER_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK | XCB_CW_COLORMAP | XCB_CW_CURSOR; values[0] = colors.bar_bg.colorpixel; values[1] = root_screen->black_pixel; /* If hide_on_modifier is set to hide or invisible mode, i3 is not supposed to manage our bar windows */ values[2] = (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[3] = XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT | XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE; 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[3] |= XCB_EVENT_MASK_VISIBILITY_CHANGE; walk->visible = true; } values[4] = colormap; values[5] = cursor; xcb_void_cookie_t win_cookie = xcb_create_window_checked(xcb_connection, depth, bar_id, xcb_root, walk->rect.x, walk->rect.y + walk->rect.h - bar_height, walk->rect.w, bar_height, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT, visual_type->visual_id, mask, values); /* The double-buffer we use to render stuff off-screen */ xcb_void_cookie_t pm_cookie = xcb_create_pixmap_checked(xcb_connection, depth, buffer_id, bar_id, walk->rect.w, bar_height); /* The double-buffer we use to render the statusline before copying to buffer */ xcb_void_cookie_t slpm_cookie = xcb_create_pixmap_checked(xcb_connection, depth, statusline_buffer_id, bar_id, walk->rect.w, bar_height); /* Set the WM_CLASS and WM_NAME (we don't need UTF-8) atoms */ char *class; int len = sasprintf(&class, "%s%ci3bar%c", config.bar_id, 0, 0); xcb_void_cookie_t class_cookie; class_cookie = xcb_change_property(xcb_connection, XCB_PROP_MODE_REPLACE, bar_id, XCB_ATOM_WM_CLASS, XCB_ATOM_STRING, 8, len, class); 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, bar_id, 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, bar_id, atoms[_NET_WM_WINDOW_TYPE], XCB_ATOM_ATOM, 32, 1, (unsigned char *)&atoms[_NET_WM_WINDOW_TYPE_DOCK]); draw_util_surface_init(xcb_connection, &walk->bar, bar_id, NULL, walk->rect.w, bar_height); draw_util_surface_init(xcb_connection, &walk->buffer, buffer_id, NULL, walk->rect.w, bar_height); draw_util_surface_init(xcb_connection, &walk->statusline_buffer, statusline_buffer_id, NULL, walk->rect.w, bar_height); xcb_void_cookie_t strut_cookie = config_strut_partial(walk); /* 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, bar_id); } if (xcb_request_failed(win_cookie, "Could not create window") || xcb_request_failed(pm_cookie, "Could not create pixmap") || xcb_request_failed(slpm_cookie, "Could not create statusline 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") || ((config.hide_on_modifier == M_DOCK) && xcb_request_failed(map_cookie, "Could not map window"))) { exit(EXIT_FAILURE); } } 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.id); DLOG("Destroying statusline buffer for output %s\n", walk->name); xcb_free_pixmap(xcb_connection, walk->statusline_buffer.id); 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.id, 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.id, mask, values); DLOG("Recreating buffer for output %s\n", walk->name); xcb_void_cookie_t pm_cookie = xcb_create_pixmap_checked(xcb_connection, depth, walk->buffer.id, walk->bar.id, walk->rect.w, bar_height); DLOG("Recreating statusline buffer for output %s\n", walk->name); xcb_void_cookie_t slpm_cookie = xcb_create_pixmap_checked(xcb_connection, depth, walk->statusline_buffer.id, walk->bar.id, walk->rect.w, bar_height); draw_util_surface_free(xcb_connection, &(walk->bar)); draw_util_surface_free(xcb_connection, &(walk->buffer)); draw_util_surface_free(xcb_connection, &(walk->statusline_buffer)); draw_util_surface_init(xcb_connection, &(walk->bar), walk->bar.id, NULL, walk->rect.w, bar_height); draw_util_surface_init(xcb_connection, &(walk->buffer), walk->buffer.id, NULL, walk->rect.w, bar_height); draw_util_surface_init(xcb_connection, &(walk->statusline_buffer), walk->statusline_buffer.id, NULL, 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.id); if (config.hide_on_modifier == M_DOCK) { cont_child(); map_cookie = xcb_map_window_checked(xcb_connection, walk->bar.id); } 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(slpm_cookie, "Could not create statusline 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); } } } /* Finally, check if we want to initialize the tray or destroy the selection * window. The result of get_tray_output() is cached. */ output_for_tray = get_tray_output(); if (output_for_tray) { if (selwin == XCB_NONE) { init_tray(); } } else if (selwin != XCB_NONE) { DLOG("Destroying tray selection window\n"); xcb_destroy_window(xcb_connection, selwin); selwin = XCB_NONE; } } /* * Draw the button for a workspace or the current binding mode indicator. * */ static void draw_button(surface_t *surface, color_t fg_color, color_t bg_color, color_t border_color, int x, int width, int text_width, i3String *text) { int height = font.height + 2 * logical_px(ws_voff_px) - 2 * logical_px(1); /* Draw the border of the button. */ draw_util_rectangle(surface, border_color, x, logical_px(1), width, height); /* Draw the inside of the button. */ draw_util_rectangle(surface, bg_color, x + logical_px(1), 2 * logical_px(1), width - 2 * logical_px(1), height - 2 * logical_px(1)); draw_util_text(text, surface, fg_color, bg_color, x + (width - text_width) / 2, logical_px(ws_voff_px), text_width); } /* * Render the bars, with buttons and statusline * */ void draw_bars(bool unhide) { DLOG("Drawing bars...\n"); uint32_t full_statusline_width = predict_statusline_length(false); uint32_t short_statusline_width = predict_statusline_length(true); i3_output *outputs_walk; SLIST_FOREACH (outputs_walk, outputs, slist) { int workspace_width = 0; if (!outputs_walk->active) { DLOG("Output %s inactive, skipping...\n", outputs_walk->name); continue; } if (outputs_walk->bar.id == XCB_NONE) { /* Oh shit, an active output without an own bar. Create it now! */ reconfig_windows(false); } bool use_focus_colors = output_has_focus(outputs_walk); /* First things first: clear the backbuffer */ draw_util_clear_surface(&(outputs_walk->buffer), (use_focus_colors ? colors.focus_bar_bg : colors.bar_bg)); 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); color_t fg_color = colors.inactive_ws_fg; color_t bg_color = colors.inactive_ws_bg; color_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; } int w = predict_button_width(ws_walk->name_width); draw_button(&(outputs_walk->buffer), fg_color, bg_color, border_color, workspace_width, w, ws_walk->name_width, ws_walk->name); workspace_width += w; 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); int w = predict_button_width(binding.name_width); draw_button(&(outputs_walk->buffer), colors.binding_mode_fg, colors.binding_mode_bg, colors.binding_mode_border, workspace_width, w, binding.name_width, binding.name); unhide = true; workspace_width += w; } if (!TAILQ_EMPTY(&statusline_head)) { DLOG("Printing statusline!\n"); int tray_width = get_tray_width(outputs_walk->trayclients); uint32_t hoff = logical_px(((workspace_width > 0) + (tray_width > 0)) * sb_hoff_px); uint32_t max_statusline_width = outputs_walk->rect.w - workspace_width - tray_width - hoff; uint32_t clip_left = 0; uint32_t statusline_width = full_statusline_width; bool use_short_text = false; if (statusline_width > max_statusline_width) { statusline_width = short_statusline_width; use_short_text = true; if (statusline_width > max_statusline_width) { clip_left = statusline_width - max_statusline_width; } } int16_t visible_statusline_width = MIN(statusline_width, max_statusline_width); int x_dest = outputs_walk->rect.w - tray_width - logical_px((tray_width > 0) * sb_hoff_px) - visible_statusline_width; draw_statusline(outputs_walk, clip_left, use_focus_colors, use_short_text); draw_util_copy_surface(&outputs_walk->statusline_buffer, &outputs_walk->buffer, 0, 0, x_dest, 0, visible_statusline_width, (int16_t)bar_height); outputs_walk->statusline_width = statusline_width; outputs_walk->statusline_short_text = use_short_text; } } /* 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; } draw_util_copy_surface(&(outputs_walk->buffer), &(outputs_walk->bar), 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; }