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
12 #include <sys/types.h>
24 #include <xcb/xcb_aux.h>
25 #include <xcb/xcb_event.h>
26 #include <xcb/xcb_keysyms.h>
28 #include <X11/keysym.h>
30 #include "keysym2ucs.h"
36 /* IPC format string. %s will be replaced with what the user entered, then
37 * the command will be sent to i3 */
40 static char *socket_path;
42 static xcb_key_symbols_t *symbols;
43 static bool modeswitch_active = false;
44 static xcb_window_t win;
45 static xcb_pixmap_t pixmap;
46 static xcb_gcontext_t pixmap_gc;
47 static xcb_char2b_t glyphs_ucs[512];
48 static char *glyphs_utf8[512];
49 static int input_position;
51 static i3String *prompt;
52 static int prompt_offset = 0;
55 xcb_connection_t *conn;
56 xcb_screen_t *root_screen;
59 * Having verboselog() and errorlog() is necessary when using libi3.
62 void verboselog(char *fmt, ...) {
66 vfprintf(stdout, fmt, args);
70 void errorlog(char *fmt, ...) {
74 vfprintf(stderr, fmt, args);
79 * Concats the glyphs (either UCS-2 or UTF-8) to a single string, suitable for
80 * rendering it (UCS-2) or sending it to i3 (UTF-8).
83 static uint8_t *concat_strings(char **glyphs, int max) {
84 uint8_t *output = calloc(max+1, 4);
85 uint8_t *walk = output;
86 for (int c = 0; c < max; c++) {
87 printf("at %c\n", glyphs[c][0]);
88 /* if the first byte is 0, this has to be UCS2 */
89 if (glyphs[c][0] == '\0') {
90 memcpy(walk, glyphs[c], 2);
93 strcpy((char*)walk, glyphs[c]);
94 walk += strlen(glyphs[c]);
97 printf("output = %s\n", output);
102 * Handles expose events (redraws of the window) and rendering in general. Will
103 * be called from the code with event == NULL or from X with event != NULL.
106 static int handle_expose(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
109 /* re-draw the background */
110 xcb_rectangle_t border = {0, 0, 500, font.height + 8}, inner = {2, 2, 496, font.height + 8 - 4};
111 xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND, (uint32_t[]){ get_colorpixel("#FF0000") });
112 xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &border);
113 xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND, (uint32_t[]){ get_colorpixel("#000000") });
114 xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &inner);
116 /* restore font color */
117 set_font_colors(pixmap_gc, get_colorpixel("#FFFFFF"), get_colorpixel("#000000"));
119 /* draw the prompt … */
120 if (prompt != NULL) {
121 draw_text(prompt, pixmap, pixmap_gc, 4, 4, 492);
124 if (input_position > 0)
126 i3String *input = i3string_from_ucs2(glyphs_ucs, input_position);
127 draw_text(input, pixmap, pixmap_gc, prompt_offset + 4, 4, 492);
128 i3string_free(input);
131 /* Copy the contents of the pixmap to the real window */
132 xcb_copy_area(conn, pixmap, win, pixmap_gc, 0, 0, 0, 0, /* */ 500, font.height + 8);
139 * Deactivates the Mode_switch bit upon release of the Mode_switch key.
142 static int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
143 printf("releasing %d, state raw = %d\n", event->detail, event->state);
145 xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, event->state);
146 if (sym == XK_Mode_switch) {
147 printf("Mode switch disabled\n");
148 modeswitch_active = false;
154 static void finish_input() {
155 char *command = (char*)concat_strings(glyphs_utf8, input_position);
157 /* count the occurences of %s in the string */
159 int len = strlen(format);
161 for (c = 0; c < (len-1); c++)
162 if (format[c] == '%' && format[c+1] == 's')
164 printf("occurences = %d\n", cnt);
166 /* allocate space for the output */
167 int inputlen = strlen(command);
168 char *full = calloc(1,
169 strlen(format) - (2 * cnt) /* format without all %s */
170 + (inputlen * cnt) /* replaced %s */
171 + 1); /* trailing NUL */
173 for (c = 0; c < len; c++) {
174 /* if this is not % or it is % but without a following 's',
175 * just copy the character */
176 if (format[c] != '%' || (c == (len-1)) || format[c+1] != 's')
177 *(dest++) = format[c];
179 strncat(dest, command, inputlen);
181 /* skip the following 's' of '%s' */
186 /* prefix the command if a prefix was specified on commandline */
187 printf("command = %s\n", full);
189 ipc_send_message(sockfd, strlen(full), 0, (uint8_t*)full);
199 * Handles keypresses by converting the keycodes to keysymbols, then the
200 * keysymbols to UCS-2. If the conversion succeeded, the glyph is saved in the
201 * internal buffers and displayed in the input window.
203 * Also handles backspace (deleting one character) and return (sending the
207 static int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
208 printf("Keypress %d, state raw = %d\n", event->detail, event->state);
210 /* See the documentation of xcb_key_symbols_get_keysym for this one.
211 * Basically: We get either col 0 or col 1, depending on whether shift is
213 int col = (event->state & XCB_MOD_MASK_SHIFT);
215 /* If modeswitch is currently active, we need to look in group 2 or 3,
217 if (modeswitch_active)
220 xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, col);
221 if (sym == XK_Mode_switch) {
222 printf("Mode switch enabled\n");
223 modeswitch_active = true;
227 if (sym == XK_Return)
230 if (sym == XK_BackSpace) {
231 if (input_position == 0)
235 free(glyphs_utf8[input_position]);
237 handle_expose(NULL, conn, NULL);
240 if (sym == XK_Escape) {
244 /* TODO: handle all of these? */
245 printf("is_keypad_key = %d\n", xcb_is_keypad_key(sym));
246 printf("is_private_keypad_key = %d\n", xcb_is_private_keypad_key(sym));
247 printf("xcb_is_cursor_key = %d\n", xcb_is_cursor_key(sym));
248 printf("xcb_is_pf_key = %d\n", xcb_is_pf_key(sym));
249 printf("xcb_is_function_key = %d\n", xcb_is_function_key(sym));
250 printf("xcb_is_misc_function_key = %d\n", xcb_is_misc_function_key(sym));
251 printf("xcb_is_modifier_key = %d\n", xcb_is_modifier_key(sym));
253 if (xcb_is_modifier_key(sym) || xcb_is_cursor_key(sym))
256 printf("sym = %c (%d)\n", sym, sym);
258 /* convert the keysym to UCS */
259 uint16_t ucs = keysym2ucs(sym);
260 if ((int16_t)ucs == -1) {
261 fprintf(stderr, "Keysym could not be converted to UCS, skipping\n");
266 inp.byte1 = ( ucs & 0xff00 ) >> 2;
267 inp.byte2 = ( ucs & 0x00ff ) >> 0;
269 printf("inp.byte1 = %02x, inp.byte2 = %02x\n", inp.byte1, inp.byte2);
270 /* convert it to UTF-8 */
271 char *out = convert_ucs2_to_utf8(&inp, 1);
272 printf("converted to %s\n", out);
274 glyphs_ucs[input_position] = inp;
275 glyphs_utf8[input_position] = out;
278 if (input_position == limit)
281 handle_expose(NULL, conn, NULL);
285 int main(int argc, char *argv[]) {
286 format = strdup("%s");
287 socket_path = getenv("I3SOCK");
288 char *pattern = sstrdup("-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1");
289 int o, option_index = 0;
291 static struct option long_options[] = {
292 {"socket", required_argument, 0, 's'},
293 {"version", no_argument, 0, 'v'},
294 {"limit", required_argument, 0, 'l'},
295 {"prompt", required_argument, 0, 'P'},
296 {"prefix", required_argument, 0, 'p'},
297 {"format", required_argument, 0, 'F'},
298 {"font", required_argument, 0, 'f'},
299 {"help", no_argument, 0, 'h'},
303 char *options_string = "s:p:P:f:l:F:vh";
305 while ((o = getopt_long(argc, argv, options_string, long_options, &option_index)) != -1) {
309 socket_path = strdup(optarg);
312 printf("i3-input " I3_VERSION);
315 /* This option is deprecated, but will still work in i3 v4.1, 4.2 and 4.3 */
316 fprintf(stderr, "i3-input: WARNING: the -p option is DEPRECATED in favor of the -F (format) option\n");
318 sasprintf(&format, "%s%%s", optarg);
321 limit = atoi(optarg);
324 i3string_free(prompt);
325 prompt = i3string_from_utf8(optarg);
329 pattern = strdup(optarg);
333 format = strdup(optarg);
336 printf("i3-input " I3_VERSION "\n");
337 printf("i3-input [-s <socket>] [-F <format>] [-l <limit>] [-P <prompt>] [-f <font>] [-v]\n");
339 printf("Example:\n");
340 printf(" i3-input -F 'workspace \"%%s\"' -P 'Switch to workspace: '\n");
345 printf("using format \"%s\"\n", format);
347 if (socket_path == NULL)
348 socket_path = root_atom_contents("I3_SOCKET_PATH");
350 if (socket_path == NULL)
351 socket_path = "/tmp/i3-ipc.sock";
353 sockfd = ipc_connect(socket_path);
356 conn = xcb_connect(NULL, &screens);
357 if (!conn || xcb_connection_has_error(conn))
358 die("Cannot open display\n");
360 root_screen = xcb_aux_get_screen(conn, screens);
361 root = root_screen->root;
363 symbols = xcb_key_symbols_alloc(conn);
365 font = load_font(pattern, true);
369 prompt_offset = predict_text_width(prompt);
371 /* Open an input window */
372 win = xcb_generate_id(conn);
375 XCB_COPY_FROM_PARENT,
376 win, /* the window id */
377 root, /* parent == root */
378 50, 50, 500, font.height + 8, /* dimensions */
379 0, /* X11 border = 0, we draw our own */
380 XCB_WINDOW_CLASS_INPUT_OUTPUT,
381 XCB_WINDOW_CLASS_COPY_FROM_PARENT, /* copy visual from parent */
382 XCB_CW_BACK_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK,
384 0, /* back pixel: black */
385 1, /* override redirect: don’t manage this window */
386 XCB_EVENT_MASK_EXPOSURE
389 /* Map the window (make it visible) */
390 xcb_map_window(conn, win);
393 pixmap = xcb_generate_id(conn);
394 pixmap_gc = xcb_generate_id(conn);
395 xcb_create_pixmap(conn, root_screen->root_depth, pixmap, win, 500, font.height + 8);
396 xcb_create_gc(conn, pixmap_gc, pixmap, 0, 0);
398 /* Set input focus (we have override_redirect=1, so the wm will not do
400 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, win, XCB_CURRENT_TIME);
402 /* Grab the keyboard to get all input */
405 /* Try (repeatedly, if necessary) to grab the keyboard. We might not
406 * get the keyboard at the first attempt because of the keybinding
407 * still being active when started via a wm’s keybinding. */
408 xcb_grab_keyboard_cookie_t cookie;
409 xcb_grab_keyboard_reply_t *reply = NULL;
412 while ((reply == NULL || reply->status != XCB_GRAB_STATUS_SUCCESS) && (count++ < 500)) {
413 cookie = xcb_grab_keyboard(conn, false, win, XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
414 reply = xcb_grab_keyboard_reply(conn, cookie, NULL);
418 if (reply->status != XCB_GRAB_STATUS_SUCCESS) {
419 fprintf(stderr, "Could not grab keyboard, status = %d\n", reply->status);
425 xcb_generic_event_t *event;
426 while ((event = xcb_wait_for_event(conn)) != NULL) {
427 if (event->response_type == 0) {
428 fprintf(stderr, "X11 Error received! sequence %x\n", event->sequence);
432 /* Strip off the highest bit (set if the event is generated) */
433 int type = (event->response_type & 0x7F);
437 handle_key_press(NULL, conn, (xcb_key_press_event_t*)event);
440 case XCB_KEY_RELEASE:
441 handle_key_release(NULL, conn, (xcb_key_release_event_t*)event);
445 handle_expose(NULL, conn, (xcb_expose_event_t*)event);