2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
7 * i3-input/main.c: Utility which lets the user input commands and sends them
13 #include <sys/types.h>
25 #include <xcb/xcb_aux.h>
26 #include <xcb/xcb_event.h>
27 #include <xcb/xcb_keysyms.h>
29 #include <X11/keysym.h>
31 #include "keysym2ucs.h"
37 /* IPC format string. %s will be replaced with what the user entered, then
38 * the command will be sent to i3 */
41 static char *socket_path;
43 static xcb_key_symbols_t *symbols;
44 static bool modeswitch_active = false;
45 static xcb_window_t win;
46 static xcb_pixmap_t pixmap;
47 static xcb_gcontext_t pixmap_gc;
48 static xcb_char2b_t glyphs_ucs[512];
49 static char *glyphs_utf8[512];
50 static int input_position;
52 static i3String *prompt;
53 static int prompt_offset = 0;
56 xcb_connection_t *conn;
57 xcb_screen_t *root_screen;
60 * Having verboselog() and errorlog() is necessary when using libi3.
63 void verboselog(char *fmt, ...) {
67 vfprintf(stdout, fmt, args);
71 void errorlog(char *fmt, ...) {
75 vfprintf(stderr, fmt, args);
80 * Concats the glyphs (either UCS-2 or UTF-8) to a single string, suitable for
81 * rendering it (UCS-2) or sending it to i3 (UTF-8).
84 static uint8_t *concat_strings(char **glyphs, int max) {
85 uint8_t *output = calloc(max+1, 4);
86 uint8_t *walk = output;
87 for (int c = 0; c < max; c++) {
88 printf("at %c\n", glyphs[c][0]);
89 /* if the first byte is 0, this has to be UCS2 */
90 if (glyphs[c][0] == '\0') {
91 memcpy(walk, glyphs[c], 2);
94 strcpy((char*)walk, glyphs[c]);
95 walk += strlen(glyphs[c]);
98 printf("output = %s\n", output);
103 * Handles expose events (redraws of the window) and rendering in general. Will
104 * be called from the code with event == NULL or from X with event != NULL.
107 static int handle_expose(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
110 /* re-draw the background */
111 xcb_rectangle_t border = {0, 0, 500, font.height + 8}, inner = {2, 2, 496, font.height + 8 - 4};
112 xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND, (uint32_t[]){ get_colorpixel("#FF0000") });
113 xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &border);
114 xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND, (uint32_t[]){ get_colorpixel("#000000") });
115 xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &inner);
117 /* restore font color */
118 set_font_colors(pixmap_gc, get_colorpixel("#FFFFFF"), get_colorpixel("#000000"));
120 /* draw the prompt … */
121 if (prompt != NULL) {
122 draw_text(prompt, pixmap, pixmap_gc, 4, 4, 492);
125 if (input_position > 0)
127 i3String *input = i3string_from_ucs2(glyphs_ucs, input_position);
128 draw_text(input, pixmap, pixmap_gc, prompt_offset + 4, 4, 492);
129 i3string_free(input);
132 /* Copy the contents of the pixmap to the real window */
133 xcb_copy_area(conn, pixmap, win, pixmap_gc, 0, 0, 0, 0, /* */ 500, font.height + 8);
140 * Deactivates the Mode_switch bit upon release of the Mode_switch key.
143 static int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
144 printf("releasing %d, state raw = %d\n", event->detail, event->state);
146 xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, event->state);
147 if (sym == XK_Mode_switch) {
148 printf("Mode switch disabled\n");
149 modeswitch_active = false;
155 static void finish_input() {
156 char *command = (char*)concat_strings(glyphs_utf8, input_position);
158 /* count the occurences of %s in the string */
160 int len = strlen(format);
162 for (c = 0; c < (len-1); c++)
163 if (format[c] == '%' && format[c+1] == 's')
165 printf("occurences = %d\n", cnt);
167 /* allocate space for the output */
168 int inputlen = strlen(command);
169 char *full = calloc(1,
170 strlen(format) - (2 * cnt) /* format without all %s */
171 + (inputlen * cnt) /* replaced %s */
172 + 1); /* trailing NUL */
174 for (c = 0; c < len; c++) {
175 /* if this is not % or it is % but without a following 's',
176 * just copy the character */
177 if (format[c] != '%' || (c == (len-1)) || format[c+1] != 's')
178 *(dest++) = format[c];
180 strncat(dest, command, inputlen);
182 /* skip the following 's' of '%s' */
187 /* prefix the command if a prefix was specified on commandline */
188 printf("command = %s\n", full);
190 ipc_send_message(sockfd, strlen(full), 0, (uint8_t*)full);
200 * Handles keypresses by converting the keycodes to keysymbols, then the
201 * keysymbols to UCS-2. If the conversion succeeded, the glyph is saved in the
202 * internal buffers and displayed in the input window.
204 * Also handles backspace (deleting one character) and return (sending the
208 static int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
209 printf("Keypress %d, state raw = %d\n", event->detail, event->state);
211 /* See the documentation of xcb_key_symbols_get_keysym for this one.
212 * Basically: We get either col 0 or col 1, depending on whether shift is
214 int col = (event->state & XCB_MOD_MASK_SHIFT);
216 /* If modeswitch is currently active, we need to look in group 2 or 3,
218 if (modeswitch_active)
221 xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, col);
222 if (sym == XK_Mode_switch) {
223 printf("Mode switch enabled\n");
224 modeswitch_active = true;
228 if (sym == XK_Return)
231 if (sym == XK_BackSpace) {
232 if (input_position == 0)
236 free(glyphs_utf8[input_position]);
238 handle_expose(NULL, conn, NULL);
241 if (sym == XK_Escape) {
245 /* TODO: handle all of these? */
246 printf("is_keypad_key = %d\n", xcb_is_keypad_key(sym));
247 printf("is_private_keypad_key = %d\n", xcb_is_private_keypad_key(sym));
248 printf("xcb_is_cursor_key = %d\n", xcb_is_cursor_key(sym));
249 printf("xcb_is_pf_key = %d\n", xcb_is_pf_key(sym));
250 printf("xcb_is_function_key = %d\n", xcb_is_function_key(sym));
251 printf("xcb_is_misc_function_key = %d\n", xcb_is_misc_function_key(sym));
252 printf("xcb_is_modifier_key = %d\n", xcb_is_modifier_key(sym));
254 if (xcb_is_modifier_key(sym) || xcb_is_cursor_key(sym))
257 printf("sym = %c (%d)\n", sym, sym);
259 /* convert the keysym to UCS */
260 uint16_t ucs = keysym2ucs(sym);
261 if ((int16_t)ucs == -1) {
262 fprintf(stderr, "Keysym could not be converted to UCS, skipping\n");
267 inp.byte1 = ( ucs & 0xff00 ) >> 2;
268 inp.byte2 = ( ucs & 0x00ff ) >> 0;
270 printf("inp.byte1 = %02x, inp.byte2 = %02x\n", inp.byte1, inp.byte2);
271 /* convert it to UTF-8 */
272 char *out = convert_ucs2_to_utf8(&inp, 1);
273 printf("converted to %s\n", out);
275 glyphs_ucs[input_position] = inp;
276 glyphs_utf8[input_position] = out;
279 if (input_position == limit)
282 handle_expose(NULL, conn, NULL);
286 int main(int argc, char *argv[]) {
287 format = strdup("%s");
288 socket_path = getenv("I3SOCK");
289 char *pattern = sstrdup("-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1");
290 int o, option_index = 0;
292 static struct option long_options[] = {
293 {"socket", required_argument, 0, 's'},
294 {"version", no_argument, 0, 'v'},
295 {"limit", required_argument, 0, 'l'},
296 {"prompt", required_argument, 0, 'P'},
297 {"prefix", required_argument, 0, 'p'},
298 {"format", required_argument, 0, 'F'},
299 {"font", required_argument, 0, 'f'},
300 {"help", no_argument, 0, 'h'},
304 char *options_string = "s:p:P:f:l:F:vh";
306 while ((o = getopt_long(argc, argv, options_string, long_options, &option_index)) != -1) {
310 socket_path = strdup(optarg);
313 printf("i3-input " I3_VERSION);
316 /* This option is deprecated, but will still work in i3 v4.1, 4.2 and 4.3 */
317 fprintf(stderr, "i3-input: WARNING: the -p option is DEPRECATED in favor of the -F (format) option\n");
319 sasprintf(&format, "%s%%s", optarg);
322 limit = atoi(optarg);
325 i3string_free(prompt);
326 prompt = i3string_from_utf8(optarg);
330 pattern = strdup(optarg);
334 format = strdup(optarg);
337 printf("i3-input " I3_VERSION "\n");
338 printf("i3-input [-s <socket>] [-F <format>] [-l <limit>] [-P <prompt>] [-f <font>] [-v]\n");
340 printf("Example:\n");
341 printf(" i3-input -F 'workspace \"%%s\"' -P 'Switch to workspace: '\n");
346 printf("using format \"%s\"\n", format);
348 if (socket_path == NULL)
349 socket_path = root_atom_contents("I3_SOCKET_PATH");
351 if (socket_path == NULL)
352 socket_path = "/tmp/i3-ipc.sock";
354 sockfd = ipc_connect(socket_path);
357 conn = xcb_connect(NULL, &screens);
358 if (!conn || xcb_connection_has_error(conn))
359 die("Cannot open display\n");
361 root_screen = xcb_aux_get_screen(conn, screens);
362 root = root_screen->root;
364 symbols = xcb_key_symbols_alloc(conn);
366 font = load_font(pattern, true);
370 prompt_offset = predict_text_width(prompt);
372 /* Open an input window */
373 win = xcb_generate_id(conn);
376 XCB_COPY_FROM_PARENT,
377 win, /* the window id */
378 root, /* parent == root */
379 50, 50, 500, font.height + 8, /* dimensions */
380 0, /* X11 border = 0, we draw our own */
381 XCB_WINDOW_CLASS_INPUT_OUTPUT,
382 XCB_WINDOW_CLASS_COPY_FROM_PARENT, /* copy visual from parent */
383 XCB_CW_BACK_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK,
385 0, /* back pixel: black */
386 1, /* override redirect: don’t manage this window */
387 XCB_EVENT_MASK_EXPOSURE
390 /* Map the window (make it visible) */
391 xcb_map_window(conn, win);
394 pixmap = xcb_generate_id(conn);
395 pixmap_gc = xcb_generate_id(conn);
396 xcb_create_pixmap(conn, root_screen->root_depth, pixmap, win, 500, font.height + 8);
397 xcb_create_gc(conn, pixmap_gc, pixmap, 0, 0);
399 /* Set input focus (we have override_redirect=1, so the wm will not do
401 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, win, XCB_CURRENT_TIME);
403 /* Grab the keyboard to get all input */
406 /* Try (repeatedly, if necessary) to grab the keyboard. We might not
407 * get the keyboard at the first attempt because of the keybinding
408 * still being active when started via a wm’s keybinding. */
409 xcb_grab_keyboard_cookie_t cookie;
410 xcb_grab_keyboard_reply_t *reply = NULL;
413 while ((reply == NULL || reply->status != XCB_GRAB_STATUS_SUCCESS) && (count++ < 500)) {
414 cookie = xcb_grab_keyboard(conn, false, win, XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
415 reply = xcb_grab_keyboard_reply(conn, cookie, NULL);
419 if (reply->status != XCB_GRAB_STATUS_SUCCESS) {
420 fprintf(stderr, "Could not grab keyboard, status = %d\n", reply->status);
426 xcb_generic_event_t *event;
427 while ((event = xcb_wait_for_event(conn)) != NULL) {
428 if (event->response_type == 0) {
429 fprintf(stderr, "X11 Error received! sequence %x\n", event->sequence);
433 /* Strip off the highest bit (set if the event is generated) */
434 int type = (event->response_type & 0x7F);
438 handle_key_press(NULL, conn, (xcb_key_press_event_t*)event);
441 case XCB_KEY_RELEASE:
442 handle_key_release(NULL, conn, (xcb_key_release_event_t*)event);
446 handle_expose(NULL, conn, (xcb_expose_event_t*)event);