469 lines
14 KiB
C
469 lines
14 KiB
C
/*
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* vim:ts=4:sw=4:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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*
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* © 2011 Michael Stapelberg and contributors
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*
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* See file LICENSE for license information.
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*
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* i3-config-wizard: Program to convert configs using keycodes to configs using
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* keysyms.
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*
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*/
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#include <ev.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include <string.h>
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#include <ctype.h>
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#include <errno.h>
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#include <err.h>
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#include <stdint.h>
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#include <getopt.h>
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#include <limits.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <glob.h>
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#include <xcb/xcb.h>
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#include <xcb/xcb_aux.h>
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#include <xcb/xcb_event.h>
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#include <xcb/xcb_keysyms.h>
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#include <X11/Xlib.h>
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#include <X11/keysym.h>
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/* We need SYSCONFDIR for the path to the keycode config template, so raise an
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* error if it’s not defined for whatever reason */
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#ifndef SYSCONFDIR
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#error "SYSCONFDIR not defined"
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#endif
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#define FREE(pointer) do { \
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if (pointer != NULL) { \
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free(pointer); \
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pointer = NULL; \
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} \
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} \
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while (0)
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#include "xcb.h"
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#include "ipc.h"
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enum { STEP_WELCOME, STEP_GENERATE } current_step = STEP_WELCOME;
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enum { MOD_ALT, MOD_SUPER } modifier = MOD_SUPER;
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static char *config_path;
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static xcb_connection_t *conn;
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static uint32_t font_id;
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static uint32_t font_bold_id;
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static char *socket_path;
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static int font_height;
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static int font_bold_height;
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static xcb_window_t win;
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static xcb_pixmap_t pixmap;
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static xcb_gcontext_t pixmap_gc;
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static xcb_key_symbols_t *symbols;
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xcb_window_t root;
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Display *dpy;
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char *rewrite_binding(const char *bindingline);
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static void finish();
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/*
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* This function resolves ~ in pathnames.
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* It may resolve wildcards in the first part of the path, but if no match
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* or multiple matches are found, it just returns a copy of path as given.
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*
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*/
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static char *resolve_tilde(const char *path) {
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static glob_t globbuf;
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char *head, *tail, *result;
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tail = strchr(path, '/');
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head = strndup(path, tail ? tail - path : strlen(path));
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int res = glob(head, GLOB_TILDE, NULL, &globbuf);
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free(head);
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/* no match, or many wildcard matches are bad */
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if (res == GLOB_NOMATCH || globbuf.gl_pathc != 1)
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result = strdup(path);
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else if (res != 0) {
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err(1, "glob() failed");
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} else {
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head = globbuf.gl_pathv[0];
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result = calloc(1, strlen(head) + (tail ? strlen(tail) : 0) + 1);
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strncpy(result, head, strlen(head));
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if (tail)
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strncat(result, tail, strlen(tail));
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}
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globfree(&globbuf);
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return result;
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}
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/*
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* Try to get the socket path from X11 and return NULL if it doesn’t work.
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* As i3-msg is a short-running tool, we don’t bother with cleaning up the
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* connection and leave it up to the operating system on exit.
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*
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*/
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static char *socket_path_from_x11() {
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xcb_connection_t *conn;
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int screen;
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if ((conn = xcb_connect(NULL, &screen)) == NULL ||
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xcb_connection_has_error(conn))
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return NULL;
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xcb_screen_t *root_screen = xcb_aux_get_screen(conn, screen);
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xcb_window_t root = root_screen->root;
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xcb_intern_atom_cookie_t atom_cookie;
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xcb_intern_atom_reply_t *atom_reply;
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atom_cookie = xcb_intern_atom(conn, 0, strlen("I3_SOCKET_PATH"), "I3_SOCKET_PATH");
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atom_reply = xcb_intern_atom_reply(conn, atom_cookie, NULL);
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if (atom_reply == NULL)
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return NULL;
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xcb_get_property_cookie_t prop_cookie;
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xcb_get_property_reply_t *prop_reply;
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prop_cookie = xcb_get_property_unchecked(conn, false, root, atom_reply->atom,
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XCB_GET_PROPERTY_TYPE_ANY, 0, PATH_MAX);
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prop_reply = xcb_get_property_reply(conn, prop_cookie, NULL);
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if (prop_reply == NULL || xcb_get_property_value_length(prop_reply) == 0)
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return NULL;
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if (asprintf(&socket_path, "%.*s", xcb_get_property_value_length(prop_reply),
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(char*)xcb_get_property_value(prop_reply)) == -1)
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return NULL;
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return socket_path;
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}
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/*
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* Handles expose events, that is, draws the window contents.
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*
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*/
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static int handle_expose() {
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/* re-draw the background */
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xcb_rectangle_t border = {0, 0, 300, (15*font_height) + 8},
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inner = {2, 2, 296, (15*font_height) + 8 - 4};
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xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#285577"));
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xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &border);
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xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
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xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &inner);
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xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FONT, font_id);
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#define txt(x, row, text) xcb_image_text_8(conn, strlen(text), pixmap, pixmap_gc, x, (row * font_height) + 2, text)
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if (current_step == STEP_WELCOME) {
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/* restore font color */
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xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#FFFFFF"));
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txt(10, 1, "i3: first configuration");
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txt(10, 4, "You have not configured i3 yet.");
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txt(10, 5, "Do you want me to generate ~/.i3/config?");
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txt(85, 8, "Yes, generate ~/.i3/config");
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txt(85, 10, "No, I will use the defaults");
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/* green */
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xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#00FF00"));
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txt(25, 8, "<Enter>");
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/* red */
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xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#FF0000"));
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txt(31, 10, "<ESC>");
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}
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if (current_step == STEP_GENERATE) {
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xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#FFFFFF"));
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txt(10, 1, "i3: generate config");
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txt(10, 4, "Please choose either:");
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txt(85, 6, "Win as default modifier");
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txt(85, 7, "Alt as default modifier");
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txt(10, 9, "Afterwards, press");
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txt(85, 11, "to write ~/.i3/config");
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txt(85, 12, "to abort");
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/* the not-selected modifier */
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if (modifier == MOD_SUPER)
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txt(31, 7, "<Alt>");
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else txt(31, 6, "<Win>");
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/* the selected modifier */
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xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FONT, font_bold_id);
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if (modifier == MOD_SUPER)
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txt(31, 6, "<Win>");
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else txt(31, 7, "<Alt>");
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/* green */
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uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_FONT;
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uint32_t values[] = { get_colorpixel(conn, "#00FF00"), font_id };
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xcb_change_gc(conn, pixmap_gc, mask, values);
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txt(25, 11, "<Enter>");
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/* red */
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xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#FF0000"));
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txt(31, 12, "<ESC>");
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}
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/* Copy the contents of the pixmap to the real window */
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xcb_copy_area(conn, pixmap, win, pixmap_gc, 0, 0, 0, 0, /* */ 500, 500);
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xcb_flush(conn);
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return 1;
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}
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static int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
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printf("Keypress %d, state raw = %d\n", event->detail, event->state);
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xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, event->state);
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printf("sym = %c (%d)\n", sym, sym);
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if (sym == XK_Return) {
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if (current_step == STEP_WELCOME)
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current_step = STEP_GENERATE;
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else finish();
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}
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/* cancel any time */
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if (sym == XK_Escape)
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exit(0);
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if (sym == XK_Alt_L)
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modifier = MOD_ALT;
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if (sym == XK_Super_L)
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modifier = MOD_SUPER;
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handle_expose();
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return 1;
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}
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/*
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* Creates the config file and tells i3 to reload.
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*
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*/
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static void finish() {
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printf("creating \"%s\"...\n", config_path);
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if (!(dpy = XOpenDisplay(NULL)))
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errx(1, "Could not connect to X11");
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FILE *kc_config = fopen(SYSCONFDIR "/i3/config.keycodes", "r");
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if (kc_config == NULL)
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err(1, "Could not open input file \"%s\"", SYSCONFDIR "/i3/config.keycodes");
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FILE *ks_config = fopen(config_path, "w");
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if (ks_config == NULL)
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err(1, "Could not open output config file \"%s\"", config_path);
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char *line = NULL;
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size_t len = 0;
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ssize_t read;
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bool head_of_file = true;
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/* write a header about auto-generation to the output file */
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fputs("# This file has been auto-generated by i3-config-wizard(1).\n", ks_config);
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fputs("# It will not be overwritten, so edit it as you like.\n", ks_config);
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fputs("#\n", ks_config);
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fputs("# Should you change your keyboard layout somewhen, delete\n", ks_config);
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fputs("# this file and re-run i3-config-wizard(1).\n", ks_config);
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fputs("#\n", ks_config);
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while ((read = getline(&line, &len, kc_config)) != -1) {
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/* skip the warning block at the beginning of the input file */
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if (head_of_file &&
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strncmp("# WARNING", line, strlen("# WARNING")) == 0)
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continue;
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head_of_file = false;
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/* Skip leading whitespace */
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char *walk = line;
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while (isspace(*walk) && walk < (line + len))
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walk++;
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/* Set the modifier the user chose */
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if (strncmp(walk, "set $mod ", strlen("set $mod ")) == 0) {
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if (modifier == MOD_ALT)
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fputs("set $mod Mod1\n", ks_config);
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else fputs("set $mod Mod4\n", ks_config);
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continue;
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}
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/* Check for 'bindcode'. If it’s not a bindcode line, we
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* just copy it to the output file */
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if (strncmp(walk, "bindcode", strlen("bindcode")) != 0) {
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fputs(line, ks_config);
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continue;
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}
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char *result = rewrite_binding(walk);
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fputs(result, ks_config);
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free(result);
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}
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/* sync to do our best in order to have the file really stored on disk */
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fflush(ks_config);
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fsync(fileno(ks_config));
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free(line);
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fclose(kc_config);
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fclose(ks_config);
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/* tell i3 to reload the config file */
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int sockfd = connect_ipc(socket_path);
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ipc_send_message(sockfd, strlen("reload"), 0, (uint8_t*)"reload");
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close(sockfd);
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exit(0);
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}
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int main(int argc, char *argv[]) {
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config_path = resolve_tilde("~/.i3/config");
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socket_path = getenv("I3SOCK");
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char *pattern = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1";
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char *patternbold = "-misc-fixed-bold-r-normal--13-120-75-75-C-70-iso10646-1";
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int o, option_index = 0;
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static struct option long_options[] = {
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{"socket", required_argument, 0, 's'},
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{"version", no_argument, 0, 'v'},
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{"limit", required_argument, 0, 'l'},
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{"prompt", required_argument, 0, 'P'},
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{"prefix", required_argument, 0, 'p'},
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{"font", required_argument, 0, 'f'},
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{"help", no_argument, 0, 'h'},
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{0, 0, 0, 0}
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};
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char *options_string = "s:vh";
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while ((o = getopt_long(argc, argv, options_string, long_options, &option_index)) != -1) {
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switch (o) {
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case 's':
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FREE(socket_path);
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socket_path = strdup(optarg);
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break;
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case 'v':
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printf("i3-config-wizard " I3_VERSION "\n");
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return 0;
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case 'h':
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printf("i3-config-wizard " I3_VERSION "\n");
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printf("i3-config-wizard [-s <socket>] [-v]\n");
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return 0;
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}
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}
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/* Check if the destination config file does not exist but the path is
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* writable. If not, exit now, this program is not useful in that case. */
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struct stat stbuf;
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if (stat(config_path, &stbuf) == 0) {
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printf("The config file \"%s\" already exists. Exiting.\n", config_path);
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return 0;
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}
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/* Create ~/.i3 if it does not yet exist */
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char *config_dir = resolve_tilde("~/.i3");
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if (stat(config_dir, &stbuf) != 0)
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if (mkdir(config_dir, 0755) == -1)
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err(1, "mkdir(%s) failed", config_dir);
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free(config_dir);
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int fd;
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if ((fd = open(config_path, O_CREAT | O_RDWR, 0644)) == -1) {
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printf("Cannot open file \"%s\" for writing: %s. Exiting.\n", config_path, strerror(errno));
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return 0;
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}
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close(fd);
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unlink(config_path);
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if (socket_path == NULL)
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socket_path = socket_path_from_x11();
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if (socket_path == NULL)
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socket_path = "/tmp/i3-ipc.sock";
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int screens;
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conn = xcb_connect(NULL, &screens);
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if (xcb_connection_has_error(conn))
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errx(1, "Cannot open display\n");
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xcb_screen_t *root_screen = xcb_aux_get_screen(conn, screens);
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root = root_screen->root;
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symbols = xcb_key_symbols_alloc(conn);
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font_id = get_font_id(conn, pattern, &font_height);
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font_bold_id = get_font_id(conn, patternbold, &font_bold_height);
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/* Open an input window */
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win = open_input_window(conn, 300, 205);
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/* Create pixmap */
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pixmap = xcb_generate_id(conn);
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pixmap_gc = xcb_generate_id(conn);
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xcb_create_pixmap(conn, root_screen->root_depth, pixmap, win, 500, 500);
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xcb_create_gc(conn, pixmap_gc, pixmap, 0, 0);
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/* Set input focus (we have override_redirect=1, so the wm will not do
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* this for us) */
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xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, win, XCB_CURRENT_TIME);
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/* Grab the keyboard to get all input */
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xcb_flush(conn);
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/* Try (repeatedly, if necessary) to grab the keyboard. We might not
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* get the keyboard at the first attempt because of the keybinding
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* still being active when started via a wm’s keybinding. */
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xcb_grab_keyboard_cookie_t cookie;
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xcb_grab_keyboard_reply_t *reply = NULL;
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int count = 0;
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while ((reply == NULL || reply->status != XCB_GRAB_STATUS_SUCCESS) && (count++ < 500)) {
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cookie = xcb_grab_keyboard(conn, false, win, XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
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reply = xcb_grab_keyboard_reply(conn, cookie, NULL);
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usleep(1000);
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}
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if (reply->status != XCB_GRAB_STATUS_SUCCESS) {
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fprintf(stderr, "Could not grab keyboard, status = %d\n", reply->status);
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exit(-1);
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}
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xcb_flush(conn);
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xcb_generic_event_t *event;
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while ((event = xcb_wait_for_event(conn)) != NULL) {
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if (event->response_type == 0) {
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fprintf(stderr, "X11 Error received! sequence %x\n", event->sequence);
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continue;
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}
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/* Strip off the highest bit (set if the event is generated) */
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int type = (event->response_type & 0x7F);
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switch (type) {
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case XCB_KEY_PRESS:
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handle_key_press(NULL, conn, (xcb_key_press_event_t*)event);
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break;
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/* TODO: handle mappingnotify */
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case XCB_EXPOSE:
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handle_expose();
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break;
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}
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free(event);
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}
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return 0;
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}
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