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 * Concats the glyphs (either UCS-2 or UTF-8) to a single string, suitable for
61 * rendering it (UCS-2) or sending it to i3 (UTF-8).
64 static uint8_t *concat_strings(char **glyphs, int max) {
65 uint8_t *output = calloc(max+1, 4);
66 uint8_t *walk = output;
67 for (int c = 0; c < max; c++) {
68 printf("at %c\n", glyphs[c][0]);
69 /* if the first byte is 0, this has to be UCS2 */
70 if (glyphs[c][0] == '\0') {
71 memcpy(walk, glyphs[c], 2);
74 strcpy((char*)walk, glyphs[c]);
75 walk += strlen(glyphs[c]);
78 printf("output = %s\n", output);
83 * Handles expose events (redraws of the window) and rendering in general. Will
84 * be called from the code with event == NULL or from X with event != NULL.
87 static int handle_expose(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
90 /* re-draw the background */
91 xcb_rectangle_t border = {0, 0, 500, font.height + 8}, inner = {2, 2, 496, font.height + 8 - 4};
92 xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND, (uint32_t[]){ get_colorpixel("#FF0000") });
93 xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &border);
94 xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND, (uint32_t[]){ get_colorpixel("#000000") });
95 xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &inner);
97 /* restore font color */
98 set_font_colors(pixmap_gc, get_colorpixel("#FFFFFF"), get_colorpixel("#000000"));
100 /* draw the prompt … */
101 if (prompt != NULL) {
102 draw_text(prompt, pixmap, pixmap_gc, 4, 4, 492);
105 if (input_position > 0)
107 i3String *input = i3string_from_ucs2(glyphs_ucs, input_position);
108 draw_text(input, pixmap, pixmap_gc, 4, 4, 492);
109 i3string_free(input);
112 /* Copy the contents of the pixmap to the real window */
113 xcb_copy_area(conn, pixmap, win, pixmap_gc, 0, 0, 0, 0, /* */ 500, font.height + 8);
120 * Deactivates the Mode_switch bit upon release of the Mode_switch key.
123 static int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
124 printf("releasing %d, state raw = %d\n", event->detail, event->state);
126 xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, event->state);
127 if (sym == XK_Mode_switch) {
128 printf("Mode switch disabled\n");
129 modeswitch_active = false;
135 static void finish_input() {
136 char *command = (char*)concat_strings(glyphs_utf8, input_position);
138 /* count the occurences of %s in the string */
140 int len = strlen(format);
142 for (c = 0; c < (len-1); c++)
143 if (format[c] == '%' && format[c+1] == 's')
145 printf("occurences = %d\n", cnt);
147 /* allocate space for the output */
148 int inputlen = strlen(command);
149 char *full = calloc(1,
150 strlen(format) - (2 * cnt) /* format without all %s */
151 + (inputlen * cnt) /* replaced %s */
152 + 1); /* trailing NUL */
154 for (c = 0; c < len; c++) {
155 /* if this is not % or it is % but without a following 's',
156 * just copy the character */
157 if (format[c] != '%' || (c == (len-1)) || format[c+1] != 's')
158 *(dest++) = format[c];
160 strncat(dest, command, inputlen);
162 /* skip the following 's' of '%s' */
167 /* prefix the command if a prefix was specified on commandline */
168 printf("command = %s\n", full);
170 ipc_send_message(sockfd, strlen(full), 0, (uint8_t*)full);
180 * Handles keypresses by converting the keycodes to keysymbols, then the
181 * keysymbols to UCS-2. If the conversion succeeded, the glyph is saved in the
182 * internal buffers and displayed in the input window.
184 * Also handles backspace (deleting one character) and return (sending the
188 static int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
189 printf("Keypress %d, state raw = %d\n", event->detail, event->state);
191 /* See the documentation of xcb_key_symbols_get_keysym for this one.
192 * Basically: We get either col 0 or col 1, depending on whether shift is
194 int col = (event->state & XCB_MOD_MASK_SHIFT);
196 /* If modeswitch is currently active, we need to look in group 2 or 3,
198 if (modeswitch_active)
201 xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, col);
202 if (sym == XK_Mode_switch) {
203 printf("Mode switch enabled\n");
204 modeswitch_active = true;
208 if (sym == XK_Return)
211 if (sym == XK_BackSpace) {
212 if (input_position == 0)
216 free(glyphs_utf8[input_position]);
218 handle_expose(NULL, conn, NULL);
221 if (sym == XK_Escape) {
225 /* TODO: handle all of these? */
226 printf("is_keypad_key = %d\n", xcb_is_keypad_key(sym));
227 printf("is_private_keypad_key = %d\n", xcb_is_private_keypad_key(sym));
228 printf("xcb_is_cursor_key = %d\n", xcb_is_cursor_key(sym));
229 printf("xcb_is_pf_key = %d\n", xcb_is_pf_key(sym));
230 printf("xcb_is_function_key = %d\n", xcb_is_function_key(sym));
231 printf("xcb_is_misc_function_key = %d\n", xcb_is_misc_function_key(sym));
232 printf("xcb_is_modifier_key = %d\n", xcb_is_modifier_key(sym));
234 if (xcb_is_modifier_key(sym) || xcb_is_cursor_key(sym))
237 printf("sym = %c (%d)\n", sym, sym);
239 /* convert the keysym to UCS */
240 uint16_t ucs = keysym2ucs(sym);
241 if ((int16_t)ucs == -1) {
242 fprintf(stderr, "Keysym could not be converted to UCS, skipping\n");
247 inp.byte1 = ( ucs & 0xff00 ) >> 2;
248 inp.byte2 = ( ucs & 0x00ff ) >> 0;
250 printf("inp.byte1 = %02x, inp.byte2 = %02x\n", inp.byte1, inp.byte2);
251 /* convert it to UTF-8 */
252 char *out = convert_ucs2_to_utf8(&inp, 1);
253 printf("converted to %s\n", out);
255 glyphs_ucs[input_position] = inp;
256 glyphs_utf8[input_position] = out;
259 if (input_position == limit)
262 handle_expose(NULL, conn, NULL);
266 int main(int argc, char *argv[]) {
267 format = strdup("%s");
268 socket_path = getenv("I3SOCK");
269 char *pattern = sstrdup("-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1");
270 int o, option_index = 0;
272 static struct option long_options[] = {
273 {"socket", required_argument, 0, 's'},
274 {"version", no_argument, 0, 'v'},
275 {"limit", required_argument, 0, 'l'},
276 {"prompt", required_argument, 0, 'P'},
277 {"prefix", required_argument, 0, 'p'},
278 {"format", required_argument, 0, 'F'},
279 {"font", required_argument, 0, 'f'},
280 {"help", no_argument, 0, 'h'},
284 char *options_string = "s:p:P:f:l:F:vh";
286 while ((o = getopt_long(argc, argv, options_string, long_options, &option_index)) != -1) {
290 socket_path = strdup(optarg);
293 printf("i3-input " I3_VERSION);
296 /* This option is deprecated, but will still work in i3 v4.1, 4.2 and 4.3 */
297 fprintf(stderr, "i3-input: WARNING: the -p option is DEPRECATED in favor of the -F (format) option\n");
299 sasprintf(&format, "%s%%s", optarg);
302 limit = atoi(optarg);
305 i3string_free(prompt);
306 prompt = i3string_from_utf8(optarg);
310 pattern = strdup(optarg);
314 format = strdup(optarg);
317 printf("i3-input " I3_VERSION "\n");
318 printf("i3-input [-s <socket>] [-F <format>] [-l <limit>] [-P <prompt>] [-f <font>] [-v]\n");
320 printf("Example:\n");
321 printf(" i3-input -F 'workspace \"%%s\"' -P 'Switch to workspace: '\n");
326 printf("using format \"%s\"\n", format);
328 if (socket_path == NULL)
329 socket_path = root_atom_contents("I3_SOCKET_PATH");
331 if (socket_path == NULL)
332 socket_path = "/tmp/i3-ipc.sock";
334 sockfd = ipc_connect(socket_path);
337 prompt_offset = predict_text_width(prompt);
340 conn = xcb_connect(NULL, &screens);
341 if (!conn || xcb_connection_has_error(conn))
342 die("Cannot open display\n");
344 root_screen = xcb_aux_get_screen(conn, screens);
345 root = root_screen->root;
347 symbols = xcb_key_symbols_alloc(conn);
349 font = load_font(pattern, true);
352 /* Open an input window */
353 win = xcb_generate_id(conn);
356 XCB_COPY_FROM_PARENT,
357 win, /* the window id */
358 root, /* parent == root */
359 50, 50, 500, font.height + 8, /* dimensions */
360 0, /* X11 border = 0, we draw our own */
361 XCB_WINDOW_CLASS_INPUT_OUTPUT,
362 XCB_WINDOW_CLASS_COPY_FROM_PARENT, /* copy visual from parent */
363 XCB_CW_BACK_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK,
365 0, /* back pixel: black */
366 1, /* override redirect: don’t manage this window */
367 XCB_EVENT_MASK_EXPOSURE
370 /* Map the window (make it visible) */
371 xcb_map_window(conn, win);
374 pixmap = xcb_generate_id(conn);
375 pixmap_gc = xcb_generate_id(conn);
376 xcb_create_pixmap(conn, root_screen->root_depth, pixmap, win, 500, font.height + 8);
377 xcb_create_gc(conn, pixmap_gc, pixmap, 0, 0);
379 /* Set input focus (we have override_redirect=1, so the wm will not do
381 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, win, XCB_CURRENT_TIME);
383 /* Grab the keyboard to get all input */
386 /* Try (repeatedly, if necessary) to grab the keyboard. We might not
387 * get the keyboard at the first attempt because of the keybinding
388 * still being active when started via a wm’s keybinding. */
389 xcb_grab_keyboard_cookie_t cookie;
390 xcb_grab_keyboard_reply_t *reply = NULL;
393 while ((reply == NULL || reply->status != XCB_GRAB_STATUS_SUCCESS) && (count++ < 500)) {
394 cookie = xcb_grab_keyboard(conn, false, win, XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
395 reply = xcb_grab_keyboard_reply(conn, cookie, NULL);
399 if (reply->status != XCB_GRAB_STATUS_SUCCESS) {
400 fprintf(stderr, "Could not grab keyboard, status = %d\n", reply->status);
406 xcb_generic_event_t *event;
407 while ((event = xcb_wait_for_event(conn)) != NULL) {
408 if (event->response_type == 0) {
409 fprintf(stderr, "X11 Error received! sequence %x\n", event->sequence);
413 /* Strip off the highest bit (set if the event is generated) */
414 int type = (event->response_type & 0x7F);
418 handle_key_press(NULL, conn, (xcb_key_press_event_t*)event);
421 case XCB_KEY_RELEASE:
422 handle_key_release(NULL, conn, (xcb_key_release_event_t*)event);
426 handle_expose(NULL, conn, (xcb_expose_event_t*)event);