2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
6 * © 2009-2011 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
10 * i3-input/main.c: Utility which lets the user input commands and sends them
16 #include <sys/types.h>
28 #include <xcb/xcb_aux.h>
29 #include <xcb/xcb_event.h>
30 #include <xcb/xcb_keysyms.h>
32 #include <X11/keysym.h>
34 #include "keysym2ucs.h"
40 /* IPC format string. %s will be replaced with what the user entered, then
41 * the command will be sent to i3 */
44 static char *socket_path;
46 static xcb_key_symbols_t *symbols;
47 static int modeswitchmask;
48 static int numlockmask;
49 static bool modeswitch_active = false;
50 static xcb_window_t win;
51 static xcb_pixmap_t pixmap;
52 static xcb_gcontext_t pixmap_gc;
53 static char *glyphs_ucs[512];
54 static char *glyphs_utf8[512];
55 static int input_position;
56 static int font_height;
58 static int prompt_len;
63 * Concats the glyphs (either UCS-2 or UTF-8) to a single string, suitable for
64 * rendering it (UCS-2) or sending it to i3 (UTF-8).
67 static uint8_t *concat_strings(char **glyphs, int max) {
68 uint8_t *output = calloc(max+1, 4);
69 uint8_t *walk = output;
70 for (int c = 0; c < max; c++) {
71 printf("at %c\n", glyphs[c][0]);
72 /* if the first byte is 0, this has to be UCS2 */
73 if (glyphs[c][0] == '\0') {
74 memcpy(walk, glyphs[c], 2);
77 strcpy((char*)walk, glyphs[c]);
78 walk += strlen(glyphs[c]);
81 printf("output = %s\n", output);
86 * Handles expose events (redraws of the window) and rendering in general. Will
87 * be called from the code with event == NULL or from X with event != NULL.
90 static int handle_expose(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
93 /* re-draw the background */
94 xcb_rectangle_t border = {0, 0, 500, font_height + 8}, inner = {2, 2, 496, font_height + 8 - 4};
95 xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND, (uint32_t[]){ get_colorpixel("#FF0000") });
96 xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &border);
97 xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND, (uint32_t[]){ get_colorpixel("#000000") });
98 xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &inner);
100 /* restore font color */
101 xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND, (uint32_t[]){ get_colorpixel("#FFFFFF") });
102 uint8_t *con = concat_strings(glyphs_ucs, input_position);
103 char *full_text = (char*)con;
104 if (prompt != NULL) {
105 full_text = malloc((prompt_len + input_position) * 2 + 1);
106 if (full_text == NULL)
107 err(EXIT_FAILURE, "malloc() failed\n");
108 memcpy(full_text, prompt, prompt_len * 2);
109 memcpy(full_text + (prompt_len * 2), con, input_position * 2);
111 xcb_image_text_16(conn, input_position + prompt_len, pixmap, pixmap_gc, 4 /* X */,
112 font_height + 2 /* Y = baseline of font */, (xcb_char2b_t*)full_text);
114 /* Copy the contents of the pixmap to the real window */
115 xcb_copy_area(conn, pixmap, win, pixmap_gc, 0, 0, 0, 0, /* */ 500, font_height + 8);
125 * Deactivates the Mode_switch bit upon release of the Mode_switch key.
128 static int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
129 printf("releasing %d, state raw = %d\n", event->detail, event->state);
132 event->state &= ~numlockmask;
134 xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, event->state);
135 if (sym == XK_Mode_switch) {
136 printf("Mode switch disabled\n");
137 modeswitch_active = false;
143 static void finish_input() {
144 char *command = (char*)concat_strings(glyphs_utf8, input_position);
146 /* count the occurences of %s in the string */
148 int len = strlen(format);
150 for (c = 0; c < (len-1); c++)
151 if (format[c] == '%' && format[c+1] == 's')
153 printf("occurences = %d\n", cnt);
155 /* allocate space for the output */
156 int inputlen = strlen(command);
157 char *full = calloc(1,
158 strlen(format) - (2 * cnt) /* format without all %s */
159 + (inputlen * cnt) /* replaced %s */
160 + 1); /* trailing NUL */
162 for (c = 0; c < len; c++) {
163 /* if this is not % or it is % but without a following 's',
164 * just copy the character */
165 if (format[c] != '%' || (c == (len-1)) || format[c+1] != 's')
166 *(dest++) = format[c];
168 strncat(dest, command, inputlen);
170 /* skip the following 's' of '%s' */
175 /* prefix the command if a prefix was specified on commandline */
176 printf("command = %s\n", full);
178 ipc_send_message(sockfd, strlen(full), 0, (uint8_t*)full);
188 * Handles keypresses by converting the keycodes to keysymbols, then the
189 * keysymbols to UCS-2. If the conversion succeeded, the glyph is saved in the
190 * internal buffers and displayed in the input window.
192 * Also handles backspace (deleting one character) and return (sending the
196 static int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
197 printf("Keypress %d, state raw = %d\n", event->detail, event->state);
200 if (modeswitch_active)
201 event->state |= modeswitchmask;
203 /* Apparantly, after activating numlock once, the numlock modifier
204 * stays turned on (use xev(1) to verify). So, to resolve useful
205 * keysyms, we remove the numlock flag from the event state */
206 event->state &= ~numlockmask;
208 xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, event->state);
209 if (sym == XK_Mode_switch) {
210 printf("Mode switch enabled\n");
211 modeswitch_active = true;
215 if (sym == XK_Return)
218 if (sym == XK_BackSpace) {
219 if (input_position == 0)
223 free(glyphs_ucs[input_position]);
224 free(glyphs_utf8[input_position]);
226 handle_expose(NULL, conn, NULL);
229 if (sym == XK_Escape) {
233 /* TODO: handle all of these? */
234 printf("is_keypad_key = %d\n", xcb_is_keypad_key(sym));
235 printf("is_private_keypad_key = %d\n", xcb_is_private_keypad_key(sym));
236 printf("xcb_is_cursor_key = %d\n", xcb_is_cursor_key(sym));
237 printf("xcb_is_pf_key = %d\n", xcb_is_pf_key(sym));
238 printf("xcb_is_function_key = %d\n", xcb_is_function_key(sym));
239 printf("xcb_is_misc_function_key = %d\n", xcb_is_misc_function_key(sym));
240 printf("xcb_is_modifier_key = %d\n", xcb_is_modifier_key(sym));
242 if (xcb_is_modifier_key(sym) || xcb_is_cursor_key(sym))
245 printf("sym = %c (%d)\n", sym, sym);
247 /* convert the keysym to UCS */
248 uint16_t ucs = keysym2ucs(sym);
249 if ((int16_t)ucs == -1) {
250 fprintf(stderr, "Keysym could not be converted to UCS, skipping\n");
254 /* store the UCS into a string */
255 uint8_t inp[3] = {(ucs & 0xFF00) >> 8, (ucs & 0xFF), 0};
257 printf("inp[0] = %02x, inp[1] = %02x, inp[2] = %02x\n", inp[0], inp[1], inp[2]);
258 /* convert it to UTF-8 */
259 char *out = convert_ucs_to_utf8((char*)inp);
260 printf("converted to %s\n", out);
262 glyphs_ucs[input_position] = malloc(3 * sizeof(uint8_t));
263 if (glyphs_ucs[input_position] == NULL)
264 err(EXIT_FAILURE, "malloc() failed\n");
265 memcpy(glyphs_ucs[input_position], inp, 3);
266 glyphs_utf8[input_position] = strdup(out);
269 if (input_position == limit)
272 handle_expose(NULL, conn, NULL);
276 int main(int argc, char *argv[]) {
277 format = strdup("%s");
278 socket_path = getenv("I3SOCK");
279 char *pattern = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1";
280 int o, option_index = 0;
282 static struct option long_options[] = {
283 {"socket", required_argument, 0, 's'},
284 {"version", no_argument, 0, 'v'},
285 {"limit", required_argument, 0, 'l'},
286 {"prompt", required_argument, 0, 'P'},
287 {"prefix", required_argument, 0, 'p'},
288 {"format", required_argument, 0, 'F'},
289 {"font", required_argument, 0, 'f'},
290 {"help", no_argument, 0, 'h'},
294 char *options_string = "s:p:P:f:l:F:vh";
296 while ((o = getopt_long(argc, argv, options_string, long_options, &option_index)) != -1) {
300 socket_path = strdup(optarg);
303 printf("i3-input " I3_VERSION);
306 /* This option is deprecated, but will still work in i3 v4.1, 4.2 and 4.3 */
307 fprintf(stderr, "i3-input: WARNING: the -p option is DEPRECATED in favor of the -F (format) option\n");
309 sasprintf(&format, "%s%%s", optarg);
312 limit = atoi(optarg);
316 prompt = strdup(optarg);
320 pattern = strdup(optarg);
324 format = strdup(optarg);
327 printf("i3-input " I3_VERSION "\n");
328 printf("i3-input [-s <socket>] [-F <format>] [-l <limit>] [-P <prompt>] [-f <font>] [-v]\n");
330 printf("Example:\n");
331 printf(" i3-input -F 'workspace \"%%s\"' -P 'Switch to workspace: '\n");
336 printf("using format \"%s\"\n", format);
338 if (socket_path == NULL)
339 socket_path = socket_path_from_x11();
341 if (socket_path == NULL)
342 socket_path = "/tmp/i3-ipc.sock";
344 sockfd = ipc_connect(socket_path);
347 prompt = convert_utf8_to_ucs2(prompt, &prompt_len);
350 xcb_connection_t *conn = xcb_connect(NULL, &screens);
351 if (xcb_connection_has_error(conn))
352 die("Cannot open display\n");
354 xcb_screen_t *root_screen = xcb_aux_get_screen(conn, screens);
355 root = root_screen->root;
357 modeswitchmask = get_mod_mask(conn, XK_Mode_switch);
358 numlockmask = get_mod_mask(conn, XK_Num_Lock);
359 symbols = xcb_key_symbols_alloc(conn);
361 uint32_t font_id = get_font_id(conn, pattern, &font_height);
363 /* Open an input window */
364 win = open_input_window(conn, 500, font_height + 8);
367 pixmap = xcb_generate_id(conn);
368 pixmap_gc = xcb_generate_id(conn);
369 xcb_create_pixmap(conn, root_screen->root_depth, pixmap, win, 500, font_height + 8);
370 xcb_create_gc(conn, pixmap_gc, pixmap, 0, 0);
372 /* Set input focus (we have override_redirect=1, so the wm will not do
374 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, win, XCB_CURRENT_TIME);
376 /* Create graphics context */
377 xcb_change_gc(conn, pixmap_gc, XCB_GC_FONT, (uint32_t[]){ font_id });
379 /* Grab the keyboard to get all input */
382 /* Try (repeatedly, if necessary) to grab the keyboard. We might not
383 * get the keyboard at the first attempt because of the keybinding
384 * still being active when started via a wm’s keybinding. */
385 xcb_grab_keyboard_cookie_t cookie;
386 xcb_grab_keyboard_reply_t *reply = NULL;
389 while ((reply == NULL || reply->status != XCB_GRAB_STATUS_SUCCESS) && (count++ < 500)) {
390 cookie = xcb_grab_keyboard(conn, false, win, XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
391 reply = xcb_grab_keyboard_reply(conn, cookie, NULL);
395 if (reply->status != XCB_GRAB_STATUS_SUCCESS) {
396 fprintf(stderr, "Could not grab keyboard, status = %d\n", reply->status);
402 xcb_generic_event_t *event;
403 while ((event = xcb_wait_for_event(conn)) != NULL) {
404 if (event->response_type == 0) {
405 fprintf(stderr, "X11 Error received! sequence %x\n", event->sequence);
409 /* Strip off the highest bit (set if the event is generated) */
410 int type = (event->response_type & 0x7F);
414 handle_key_press(NULL, conn, (xcb_key_press_event_t*)event);
417 case XCB_KEY_RELEASE:
418 handle_key_release(NULL, conn, (xcb_key_release_event_t*)event);
422 handle_expose(NULL, conn, (xcb_expose_event_t*)event);