2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
7 * i3-input/main.c: Utility which lets the user input commands and sends them
14 #include <sys/types.h>
26 #include <xcb/xcb_aux.h>
27 #include <xcb/xcb_event.h>
28 #include <xcb/xcb_keysyms.h>
30 #include <X11/keysym.h>
32 #include "keysym2ucs.h"
36 #define MAX_WIDTH logical_px(500)
37 #define BORDER logical_px(2)
38 #define PADDING logical_px(2)
40 /* IPC format string. %s will be replaced with what the user entered, then
41 * the command will be sent to i3 */
45 static xcb_key_symbols_t *symbols;
46 static bool modeswitch_active = false;
47 static xcb_window_t win;
48 static surface_t surface;
49 static xcb_char2b_t glyphs_ucs[512];
50 static char *glyphs_utf8[512];
51 static int input_position;
53 static i3String *prompt;
54 static int prompt_offset = 0;
57 xcb_connection_t *conn;
58 xcb_screen_t *root_screen;
61 * Having verboselog(), errorlog() and debuglog() is necessary when using libi3.
64 void verboselog(char *fmt, ...) {
68 vfprintf(stdout, fmt, args);
72 void errorlog(char *fmt, ...) {
76 vfprintf(stderr, fmt, args);
80 void debuglog(char *fmt, ...) {
84 * Concats the glyphs (either UCS-2 or UTF-8) to a single string, suitable for
85 * rendering it (UCS-2) or sending it to i3 (UTF-8).
88 static uint8_t *concat_strings(char **glyphs, int max) {
89 uint8_t *output = scalloc(max + 1, 4);
90 uint8_t *walk = output;
91 for (int c = 0; c < max; c++) {
92 printf("at %c\n", glyphs[c][0]);
93 /* if the first byte is 0, this has to be UCS2 */
94 if (glyphs[c][0] == '\0') {
95 memcpy(walk, glyphs[c], 2);
98 strcpy((char *)walk, glyphs[c]);
99 walk += strlen(glyphs[c]);
102 printf("output = %s\n", output);
107 * Handles expose events (redraws of the window) and rendering in general. Will
108 * be called from the code with event == NULL or from X with event != NULL.
111 static int handle_expose(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
114 color_t border_color = draw_util_hex_to_color("#FF0000");
115 color_t fg_color = draw_util_hex_to_color("#FFFFFF");
116 color_t bg_color = draw_util_hex_to_color("#000000");
118 int text_offset = BORDER + PADDING;
121 draw_util_rectangle(&surface, border_color, 0, 0, surface.width, surface.height);
123 /* draw background */
124 draw_util_rectangle(&surface, bg_color, BORDER, BORDER, surface.width - 2 * BORDER, surface.height - 2 * BORDER);
126 /* draw the prompt … */
127 if (prompt != NULL) {
128 draw_util_text(prompt, &surface, fg_color, bg_color, text_offset, text_offset, MAX_WIDTH - text_offset);
132 if (input_position > 0) {
133 i3String *input = i3string_from_ucs2(glyphs_ucs, input_position);
134 draw_util_text(input, &surface, fg_color, bg_color, text_offset + prompt_offset, text_offset, MAX_WIDTH - text_offset);
135 i3string_free(input);
144 * Deactivates the Mode_switch bit upon release of the Mode_switch key.
147 static int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
148 printf("releasing %d, state raw = %d\n", event->detail, event->state);
150 xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, event->state);
151 if (sym == XK_Mode_switch) {
152 printf("Mode switch disabled\n");
153 modeswitch_active = false;
159 static void finish_input() {
160 char *command = (char *)concat_strings(glyphs_utf8, input_position);
162 /* count the occurrences of %s in the string */
164 int len = strlen(format);
166 for (c = 0; c < (len - 1); c++)
167 if (format[c] == '%' && format[c + 1] == 's')
169 printf("occurrences = %d\n", cnt);
171 /* allocate space for the output */
172 int inputlen = strlen(command);
173 char *full = scalloc(strlen(format) - (2 * cnt) /* format without all %s */
174 + (inputlen * cnt) /* replaced %s */
175 + 1, /* trailing NUL */
178 for (c = 0; c < len; c++) {
179 /* if this is not % or it is % but without a following 's',
180 * just copy the character */
181 if (format[c] != '%' || (c == (len - 1)) || format[c + 1] != 's')
182 *(dest++) = format[c];
184 strncat(dest, command, inputlen);
186 /* skip the following 's' of '%s' */
191 /* prefix the command if a prefix was specified on commandline */
192 printf("command = %s\n", full);
194 ipc_send_message(sockfd, strlen(full), 0, (uint8_t *)full);
202 * Handles keypresses by converting the keycodes to keysymbols, then the
203 * keysymbols to UCS-2. If the conversion succeeded, the glyph is saved in the
204 * internal buffers and displayed in the input window.
206 * Also handles backspace (deleting one character) and return (sending the
210 static int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
211 printf("Keypress %d, state raw = %d\n", event->detail, event->state);
213 // TODO: port the input handling code from i3lock once libxkbcommon ≥ 0.5.0
214 // is available in distros.
216 /* See the documentation of xcb_key_symbols_get_keysym for this one.
217 * Basically: We get either col 0 or col 1, depending on whether shift is
219 int col = (event->state & XCB_MOD_MASK_SHIFT);
221 /* If modeswitch is currently active, we need to look in group 2 or 3,
223 if (modeswitch_active)
226 xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, col);
227 if (sym == XK_Mode_switch) {
228 printf("Mode switch enabled\n");
229 modeswitch_active = true;
233 if (sym == XK_Return)
236 if (sym == XK_BackSpace) {
237 if (input_position == 0)
241 free(glyphs_utf8[input_position]);
243 handle_expose(NULL, conn, NULL);
246 if (sym == XK_Escape) {
250 /* TODO: handle all of these? */
251 printf("is_keypad_key = %d\n", xcb_is_keypad_key(sym));
252 printf("is_private_keypad_key = %d\n", xcb_is_private_keypad_key(sym));
253 printf("xcb_is_cursor_key = %d\n", xcb_is_cursor_key(sym));
254 printf("xcb_is_pf_key = %d\n", xcb_is_pf_key(sym));
255 printf("xcb_is_function_key = %d\n", xcb_is_function_key(sym));
256 printf("xcb_is_misc_function_key = %d\n", xcb_is_misc_function_key(sym));
257 printf("xcb_is_modifier_key = %d\n", xcb_is_modifier_key(sym));
259 if (xcb_is_modifier_key(sym) || xcb_is_cursor_key(sym))
262 printf("sym = %c (%d)\n", sym, sym);
264 /* convert the keysym to UCS */
265 uint16_t ucs = keysym2ucs(sym);
266 if ((int16_t)ucs == -1) {
267 fprintf(stderr, "Keysym could not be converted to UCS, skipping\n");
272 inp.byte1 = (ucs & 0xff00) >> 2;
273 inp.byte2 = (ucs & 0x00ff) >> 0;
275 printf("inp.byte1 = %02x, inp.byte2 = %02x\n", inp.byte1, inp.byte2);
276 /* convert it to UTF-8 */
277 char *out = convert_ucs2_to_utf8(&inp, 1);
278 printf("converted to %s\n", out);
280 glyphs_ucs[input_position] = inp;
281 glyphs_utf8[input_position] = out;
284 if (input_position == limit)
287 handle_expose(NULL, conn, NULL);
291 static xcb_rectangle_t get_window_position(void) {
292 xcb_rectangle_t result = (xcb_rectangle_t){logical_px(50), logical_px(50), MAX_WIDTH, font.height + 2 * BORDER + 2 * PADDING};
294 xcb_get_property_reply_t *supporting_wm_reply = NULL;
295 xcb_get_input_focus_reply_t *input_focus = NULL;
296 xcb_get_geometry_reply_t *geometry = NULL;
297 xcb_get_property_reply_t *wm_class = NULL;
298 xcb_translate_coordinates_reply_t *coordinates = NULL;
300 xcb_atom_t A__NET_SUPPORTING_WM_CHECK;
301 xcb_intern_atom_cookie_t nswc_cookie = xcb_intern_atom(conn, 0, strlen("_NET_SUPPORTING_WM_CHECK"), "_NET_SUPPORTING_WM_CHECK");
302 xcb_intern_atom_reply_t *nswc_reply = xcb_intern_atom_reply(conn, nswc_cookie, NULL);
303 if (nswc_reply == NULL) {
304 ELOG("Could not intern atom _NET_SUPPORTING_WM_CHECK\n");
307 A__NET_SUPPORTING_WM_CHECK = nswc_reply->atom;
310 supporting_wm_reply = xcb_get_property_reply(
311 conn, xcb_get_property(conn, false, root, A__NET_SUPPORTING_WM_CHECK, XCB_ATOM_WINDOW, 0, 32), NULL);
312 xcb_window_t *supporting_wm_win = NULL;
313 if (supporting_wm_reply == NULL || xcb_get_property_value_length(supporting_wm_reply) == 0) {
314 DLOG("Could not determine EWMH support window.\n");
316 supporting_wm_win = xcb_get_property_value(supporting_wm_reply);
319 /* In rare cases, the window holding the input focus might disappear while we are figuring out its
320 * position. To avoid this, we grab the server in the meantime. */
321 xcb_grab_server(conn);
323 input_focus = xcb_get_input_focus_reply(conn, xcb_get_input_focus(conn), NULL);
324 if (input_focus == NULL || input_focus->focus == XCB_NONE) {
325 DLOG("Failed to receive the current input focus or no window has the input focus right now.\n");
329 /* We need to ignore the EWMH support window to which the focus can be set if there's no suitable window to focus. */
330 if (supporting_wm_win != NULL && input_focus->focus == *supporting_wm_win) {
331 DLOG("Input focus is on the EWMH support window, ignoring.\n");
335 geometry = xcb_get_geometry_reply(conn, xcb_get_geometry(conn, input_focus->focus), NULL);
336 if (geometry == NULL) {
337 DLOG("Failed to received window geometry.\n");
341 wm_class = xcb_get_property_reply(
342 conn, xcb_get_property(conn, false, input_focus->focus, XCB_ATOM_WM_CLASS, XCB_GET_PROPERTY_TYPE_ANY, 0, 32), NULL);
344 /* We need to find out whether the input focus is on an i3 frame window. If it is, we must not translate the coordinates. */
345 if (wm_class == NULL || xcb_get_property_value_length(wm_class) == 0 || strcmp(xcb_get_property_value(wm_class), "i3-frame") != 0) {
346 coordinates = xcb_translate_coordinates_reply(
347 conn, xcb_translate_coordinates(conn, input_focus->focus, root, geometry->x, geometry->y), NULL);
348 if (coordinates == NULL) {
349 DLOG("Failed to translate coordinates.\n");
353 DLOG("Determined coordinates of window with input focus at x = %i / y = %i.\n", coordinates->dst_x, coordinates->dst_y);
354 result.x += coordinates->dst_x;
355 result.y += coordinates->dst_y;
357 DLOG("Determined coordinates of window with input focus at x = %i / y = %i.\n", geometry->x, geometry->y);
358 result.x += geometry->x;
359 result.y += geometry->y;
363 xcb_ungrab_server(conn);
366 FREE(supporting_wm_reply);
374 int main(int argc, char *argv[]) {
375 format = sstrdup("%s");
376 char *socket_path = NULL;
377 char *pattern = sstrdup("pango:monospace 8");
378 int o, option_index = 0;
380 static struct option long_options[] = {
381 {"socket", required_argument, 0, 's'},
382 {"version", no_argument, 0, 'v'},
383 {"limit", required_argument, 0, 'l'},
384 {"prompt", required_argument, 0, 'P'},
385 {"prefix", required_argument, 0, 'p'},
386 {"format", required_argument, 0, 'F'},
387 {"font", required_argument, 0, 'f'},
388 {"help", no_argument, 0, 'h'},
391 char *options_string = "s:p:P:f:l:F:vh";
393 while ((o = getopt_long(argc, argv, options_string, long_options, &option_index)) != -1) {
397 socket_path = sstrdup(optarg);
400 printf("i3-input " I3_VERSION);
403 /* This option is deprecated, but will still work in i3 v4.1, 4.2 and 4.3 */
404 fprintf(stderr, "i3-input: WARNING: the -p option is DEPRECATED in favor of the -F (format) option\n");
406 sasprintf(&format, "%s%%s", optarg);
409 limit = atoi(optarg);
412 i3string_free(prompt);
413 prompt = i3string_from_utf8(optarg);
417 pattern = sstrdup(optarg);
421 format = sstrdup(optarg);
424 printf("i3-input " I3_VERSION "\n");
425 printf("i3-input [-s <socket>] [-F <format>] [-l <limit>] [-P <prompt>] [-f <font>] [-v]\n");
427 printf("Example:\n");
428 printf(" i3-input -F 'workspace \"%%s\"' -P 'Switch to workspace: '\n");
433 printf("using format \"%s\"\n", format);
436 conn = xcb_connect(NULL, &screen);
437 if (!conn || xcb_connection_has_error(conn))
438 die("Cannot open display\n");
440 sockfd = ipc_connect(socket_path);
442 root_screen = xcb_aux_get_screen(conn, screen);
443 root = root_screen->root;
445 symbols = xcb_key_symbols_alloc(conn);
448 font = load_font(pattern, true);
452 prompt_offset = predict_text_width(prompt);
454 const xcb_rectangle_t win_pos = get_window_position();
456 /* Open an input window */
457 win = xcb_generate_id(conn);
460 XCB_COPY_FROM_PARENT,
461 win, /* the window id */
462 root, /* parent == root */
463 win_pos.x, win_pos.y, win_pos.width, win_pos.height, /* dimensions */
464 0, /* X11 border = 0, we draw our own */
465 XCB_WINDOW_CLASS_INPUT_OUTPUT,
466 XCB_WINDOW_CLASS_COPY_FROM_PARENT, /* copy visual from parent */
467 XCB_CW_BACK_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK,
469 0, /* back pixel: black */
470 1, /* override redirect: don’t manage this window */
471 XCB_EVENT_MASK_EXPOSURE});
473 /* Map the window (make it visible) */
474 xcb_map_window(conn, win);
476 /* Initialize the drawable surface */
477 draw_util_surface_init(conn, &surface, win, get_visualtype(root_screen), win_pos.width, win_pos.height);
479 /* Grab the keyboard to get all input */
482 /* Try (repeatedly, if necessary) to grab the keyboard. We might not
483 * get the keyboard at the first attempt because of the keybinding
484 * still being active when started via a wm’s keybinding. */
485 xcb_grab_keyboard_cookie_t cookie;
486 xcb_grab_keyboard_reply_t *reply = NULL;
489 while ((reply == NULL || reply->status != XCB_GRAB_STATUS_SUCCESS) && (count++ < 500)) {
490 cookie = xcb_grab_keyboard(conn, false, win, XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
491 reply = xcb_grab_keyboard_reply(conn, cookie, NULL);
495 if (reply->status != XCB_GRAB_STATUS_SUCCESS) {
496 fprintf(stderr, "Could not grab keyboard, status = %d\n", reply->status);
502 xcb_generic_event_t *event;
503 while ((event = xcb_wait_for_event(conn)) != NULL) {
504 if (event->response_type == 0) {
505 fprintf(stderr, "X11 Error received! sequence %x\n", event->sequence);
509 /* Strip off the highest bit (set if the event is generated) */
510 int type = (event->response_type & 0x7F);
514 handle_key_press(NULL, conn, (xcb_key_press_event_t *)event);
517 case XCB_KEY_RELEASE:
518 handle_key_release(NULL, conn, (xcb_key_release_event_t *)event);
522 if (((xcb_expose_event_t *)event)->count == 0) {
523 handle_expose(NULL, conn, (xcb_expose_event_t *)event);
532 draw_util_surface_free(conn, &surface);