/*
* vim:ts=4:sw=4:expandtab
*
- * © 2010 Michael Stapelberg
+ * © 2010-2012 Michael Stapelberg
*
* See LICENSE for licensing information
*
#include <xcb/dpms.h>
#include <xcb/xcb_keysyms.h>
#include <err.h>
-#include <cairo.h>
#include <assert.h>
#include <security/pam_appl.h>
/* FIXME: can we get rid of this header? */
+#include <X11/Xutil.h>
#include <X11/keysym.h>
#include <getopt.h>
#include <string.h>
+#include <ev.h>
+#include <sys/mman.h>
+
+#ifndef NOLIBCAIRO
+#include <cairo.h>
+#include <cairo/cairo-xcb.h>
+#endif
+
+#include "i3lock.h"
#include "keysym2ucs.h"
#include "ucs2_to_utf8.h"
#include "xcb.h"
-
-static xcb_connection_t *conn;
+#include "cursors.h"
+#include "unlock_indicator.h"
+#include "xinerama.h"
+
+char color[7] = "ffffff";
+uint32_t last_resolution[2];
+xcb_window_t win;
+static xcb_cursor_t cursor;
static xcb_key_symbols_t *symbols;
-static cairo_t *ctx = NULL;
static pam_handle_t *pam_handle;
-static int input_position = 0;
-/* holds the password you enter (in UTF-8) */
+int input_position = 0;
+/* Holds the password you enter (in UTF-8). */
static char password[512];
static bool modeswitch_active = false;
-static int modeswitchmask;
+static bool iso_level3_shift_active = false;
+static bool iso_level5_shift_active = false;
static int numlockmask;
+static int shiftlockmask;
+static int capslockmask;
static bool beep = false;
+bool debug_mode = false;
+static bool dpms = false;
+bool unlock_indicator = true;
+static bool dont_fork = false;
+struct ev_loop *main_loop;
+static struct ev_timer *clear_pam_wrong_timeout;
+extern unlock_state_t unlock_state;
+extern pam_state_t pam_state;
+
+#ifndef NOLIBCAIRO
+cairo_surface_t *img = NULL;
+bool tile = false;
+#endif
+
+/*
+ * Clears the memory which stored the password to be a bit safer against
+ * cold-boot attacks.
+ *
+ */
+static void clear_password_memory() {
+ /* A volatile pointer to the password buffer to prevent the compiler from
+ * optimizing this out. */
+ volatile char *vpassword = password;
+ for (int c = 0; c < sizeof(password); c++)
+ /* We store a non-random pattern which consists of the (irrelevant)
+ * index plus (!) the value of the beep variable. This prevents the
+ * compiler from optimizing the calls away, since the value of 'beep'
+ * is not known at compile-time. */
+ vpassword[c] = c + (int)beep;
+}
+
+
+/*
+ * Resets pam_state to STATE_PAM_IDLE 2 seconds after an unsuccesful
+ * authentication event.
+ *
+ */
+static void clear_pam_wrong(EV_P_ ev_timer *w, int revents) {
+ DEBUG("clearing pam wrong\n");
+ pam_state = STATE_PAM_IDLE;
+ unlock_state = STATE_STARTED;
+ redraw_screen();
+
+ /* Now free this timeout. */
+ ev_timer_stop(main_loop, clear_pam_wrong_timeout);
+ free(clear_pam_wrong_timeout);
+ clear_pam_wrong_timeout = NULL;
+}
static void input_done() {
if (input_position == 0)
return;
- /* TODO: change cursor during authentication? */
+ if (clear_pam_wrong_timeout) {
+ ev_timer_stop(main_loop, clear_pam_wrong_timeout);
+ free(clear_pam_wrong_timeout);
+ clear_pam_wrong_timeout = NULL;
+ }
+
+ pam_state = STATE_PAM_VERIFY;
+ redraw_screen();
+
if (pam_authenticate(pam_handle, 0) == PAM_SUCCESS) {
- printf("successfully authenticated\n");
+ DEBUG("successfully authenticated\n");
+ clear_password_memory();
exit(0);
}
+ if (debug_mode)
+ fprintf(stderr, "Authentication failure\n");
+
+ pam_state = STATE_PAM_WRONG;
+ redraw_screen();
+
+ /* Clear this state after 2 seconds (unless the user enters another
+ * password during that time). */
+ ev_now_update(main_loop);
+ if ((clear_pam_wrong_timeout = calloc(sizeof(struct ev_timer), 1))) {
+ ev_timer_init(clear_pam_wrong_timeout, clear_pam_wrong, 2.0, 0.);
+ ev_timer_start(main_loop, clear_pam_wrong_timeout);
+ }
+
+ /* Cancel the clear_indicator_timeout, it would hide the unlock indicator
+ * too early. */
+ stop_clear_indicator_timeout();
+
/* beep on authentication failure, if enabled */
if (beep) {
xcb_bell(conn, 100);
}
}
-/*
- * Called when we should draw the image (if any).
- *
- */
-static void handle_expose_event() {
- if (!ctx)
- return;
-
- cairo_paint(ctx);
- xcb_flush(conn);
-}
-
/*
* Called when the user releases a key. We need to leave the Mode_switch
* state when the user releases the Mode_switch key.
*
*/
static void handle_key_release(xcb_key_release_event_t *event) {
- printf("releasing %d, state raw = %d\n", event->detail, event->state);
-
- /* fix state */
- event->state &= ~numlockmask;
-
- xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, event->state);
+ DEBUG("releasing key %d, state raw = %d, modeswitch_active = %d, iso_level3_shift_active = %d, iso_level5_shift_active = %d\n",
+ event->detail, event->state, modeswitch_active, iso_level3_shift_active, iso_level5_shift_active);
+
+ /* We don’t care about the column here and just use the first symbol. Since
+ * we only check for Mode_switch and ISO_Level3_Shift, this *should* work.
+ * Also, if we would use the current column, we would look in the wrong
+ * place. */
+ xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, 0);
if (sym == XK_Mode_switch) {
- printf("Mode switch disabled\n");
+ //printf("Mode switch disabled\n");
modeswitch_active = false;
+ } else if (sym == XK_ISO_Level3_Shift) {
+ iso_level3_shift_active = false;
+ } else if (sym == XK_ISO_Level5_Shift) {
+ iso_level5_shift_active = false;
}
+ DEBUG("release done. modeswitch_active = %d, iso_level3_shift_active = %d, iso_level5_shift_active = %d\n",
+ modeswitch_active, iso_level3_shift_active, iso_level5_shift_active);
+}
+
+static void redraw_timeout(EV_P_ ev_timer *w, int revents) {
+ redraw_screen();
+
+ ev_timer_stop(main_loop, w);
+ free(w);
}
/*
*
*/
static void handle_key_press(xcb_key_press_event_t *event) {
- printf("keypress %d, state raw = %d\n", event->detail, event->state);
-
- /* fix state */
+ DEBUG("keypress %d, state raw = %d, modeswitch_active = %d, iso_level3_shift_active = %d\n",
+ event->detail, event->state, modeswitch_active, iso_level3_shift_active);
+
+ xcb_keysym_t sym0, sym1, sym;
+ /* For each keycode, there is a list of symbols. The list could look like this:
+ * $ xmodmap -pke | grep 'keycode 38'
+ * keycode 38 = a A adiaeresis Adiaeresis o O
+ * In non-X11 terminology, the symbols for the keycode 38 (the key labeled
+ * with "a" on my keyboard) are "a A ä Ä o O".
+ * Another form to display the same information is using xkbcomp:
+ * $ xkbcomp $DISPLAY /tmp/xkb.dump
+ * Then open /tmp/xkb.dump and search for '\<a\>' (in VIM regexp-language):
+ *
+ * symbols[Group1]= [ a, A, o, O ],
+ * symbols[Group2]= [ adiaeresis, Adiaeresis ]
+ *
+ * So there are two *groups*, one containing 'a A' and one containing 'ä
+ * Ä'. You can use Mode_switch to switch between these groups. You can use
+ * ISO_Level3_Shift to reach the 'o O' part of the first group (it’s the
+ * same group, just an even higher shift level).
+ *
+ * So, using the "logical" XKB information, the following lookup will be
+ * performed:
+ *
+ * Neither Mode_switch nor ISO_Level3_Shift active: group 1, column 0 and 1
+ * Mode_switch active: group 2, column 0 and 1
+ * ISO_Level3_Shift active: group 1, column 2 and 3
+ *
+ * Using the column index which xcb_key_press_lookup_keysym uses (and
+ * xmodmap prints out), the following lookup will be performed:
+ *
+ * Neither Mode_switch nor ISO_Level3_Shift active: column 0 and 1
+ * Mode_switch active: column 2 and 3
+ * ISO_Level3_Shift active: column 4 and 5
+ */
+ int base_column = 0;
if (modeswitch_active)
- event->state |= modeswitchmask;
-
- /* Apparantly, after activating numlock once, the numlock modifier
- * stays turned on (use xev(1) to verify). So, to resolve useful
- * keysyms, we remove the numlock flag from the event state */
- event->state &= ~numlockmask;
-
- if ((input_position + 8) >= sizeof(password))
- return;
-
- xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, event->state);
- switch (sym) {
+ base_column = 2;
+ if (iso_level3_shift_active)
+ base_column = 4;
+ if (iso_level5_shift_active)
+ base_column = 6;
+ sym0 = xcb_key_press_lookup_keysym(symbols, event, base_column);
+ sym1 = xcb_key_press_lookup_keysym(symbols, event, base_column + 1);
+ switch (sym0) {
case XK_Mode_switch:
- printf("Mode switch enabled\n");
+ DEBUG("Mode switch enabled\n");
modeswitch_active = true;
return;
-
+ case XK_ISO_Level3_Shift:
+ DEBUG("ISO_Level3_Shift enabled\n");
+ iso_level3_shift_active = true;
+ return;
+ case XK_ISO_Level5_Shift:
+ DEBUG("ISO_Level5_Shift enabled\n");
+ iso_level5_shift_active = true;
+ return;
case XK_Return:
+ case XK_KP_Enter:
input_done();
case XK_Escape:
input_position = 0;
+ clear_password_memory();
password[input_position] = '\0';
+
+ /* Hide the unlock indicator after a bit if the password buffer is
+ * empty. */
+ start_clear_indicator_timeout();
+ unlock_state = STATE_BACKSPACE_ACTIVE;
+ redraw_screen();
+ unlock_state = STATE_KEY_PRESSED;
return;
case XK_BackSpace:
/* decrement input_position to point to the previous glyph */
u8_dec(password, &input_position);
password[input_position] = '\0';
- printf("new input position = %d, new password = %s\n", input_position, password);
+
+ /* Hide the unlock indicator after a bit if the password buffer is
+ * empty. */
+ start_clear_indicator_timeout();
+ unlock_state = STATE_BACKSPACE_ACTIVE;
+ redraw_screen();
+ unlock_state = STATE_KEY_PRESSED;
+ return;
+ }
+
+ if ((input_position + 8) >= sizeof(password))
return;
+
+ /* Whether the user currently holds down the shift key. */
+ bool shift = (event->state & XCB_MOD_MASK_SHIFT);
+
+ /* Whether Caps Lock (all lowercase alphabetic keys will be replaced by
+ * their uppercase variant) is active at the moment. */
+ bool capslock = (event->state & capslockmask);
+
+ /* Whether Shift Lock (shift state is reversed) is active at the moment. */
+ bool shiftlock = (event->state & shiftlockmask);
+
+ /* Whether Caps Lock or Shift Lock is active at the moment. */
+ bool lock = (capslock || shiftlock);
+
+ DEBUG("shift = %d, lock = %d, capslock = %d, shiftlock = %d\n",
+ shift, lock, capslock, shiftlock);
+
+ if ((event->state & numlockmask) && xcb_is_keypad_key(sym1)) {
+ /* this key was a keypad key */
+ if (shift || shiftlock)
+ sym = sym0;
+ else sym = sym1;
+ } else {
+ xcb_keysym_t upper, lower;
+ XConvertCase(sym0, (KeySym*)&lower, (KeySym*)&upper);
+ DEBUG("sym0 = %c (%d), sym1 = %c (%d), lower = %c (%d), upper = %c (%d)\n",
+ sym0, sym0, sym1, sym1, lower, lower, upper, upper);
+ /* If there is no difference between the uppercase and lowercase
+ * variant of this key, we consider Caps Lock off — it is only relevant
+ * for alphabetic keys, unlike Shift Lock. */
+ if (lower == upper) {
+ capslock = false;
+ lock = (capslock || shiftlock);
+ DEBUG("lower == upper, now shift = %d, lock = %d, capslock = %d, shiftlock = %d\n",
+ shift, lock, capslock, shiftlock);
+ }
+
+ /* In two different cases we need to use the uppercase keysym:
+ * 1) The user holds shift, no lock is active.
+ * 2) Any of the two locks is active.
+ */
+ if ((shift && !lock) || (!shift && lock))
+ sym = sym1;
+ else sym = sym0;
}
+#if 0
/* FIXME: handle all of these? */
printf("is_keypad_key = %d\n", xcb_is_keypad_key(sym));
printf("is_private_keypad_key = %d\n", xcb_is_private_keypad_key(sym));
printf("xcb_is_function_key = %d\n", xcb_is_function_key(sym));
printf("xcb_is_misc_function_key = %d\n", xcb_is_misc_function_key(sym));
printf("xcb_is_modifier_key = %d\n", xcb_is_modifier_key(sym));
+#endif
if (xcb_is_modifier_key(sym) || xcb_is_cursor_key(sym))
- return;
+ return;
- printf("sym = %c (%d)\n", sym, sym);
+ DEBUG("resolved to keysym = %c (%d)\n", sym, sym);
/* convert the keysym to UCS */
uint16_t ucs = keysym2ucs(sym);
if ((int16_t)ucs == -1) {
+ if (debug_mode)
fprintf(stderr, "Keysym could not be converted to UCS, skipping\n");
- return;
+ return;
}
/* store the UCS in a string to convert it */
uint8_t inp[3] = {(ucs & 0xFF00) >> 8, (ucs & 0xFF), 0};
+ DEBUG("input part = %s\n", inp);
/* store it in the password array as UTF-8 */
input_position += convert_ucs_to_utf8((char*)inp, password + input_position);
password[input_position] = '\0';
- printf("current password = %s\n", password);
+ DEBUG("current password = %s\n", password);
+
+ unlock_state = STATE_KEY_ACTIVE;
+ redraw_screen();
+ unlock_state = STATE_KEY_PRESSED;
+
+ struct ev_timer *timeout = calloc(sizeof(struct ev_timer), 1);
+ if (timeout) {
+ ev_timer_init(timeout, redraw_timeout, 0.25, 0.);
+ ev_timer_start(main_loop, timeout);
+ }
+
+ stop_clear_indicator_timeout();
+}
+
+/*
+ * A visibility notify event will be received when the visibility (= can the
+ * user view the complete window) changes, so for example when a popup overlays
+ * some area of the i3lock window.
+ *
+ * In this case, we raise our window on top so that the popup (or whatever is
+ * hiding us) gets hidden.
+ *
+ */
+static void handle_visibility_notify(xcb_visibility_notify_event_t *event) {
+ if (event->state != XCB_VISIBILITY_UNOBSCURED) {
+ uint32_t values[] = { XCB_STACK_MODE_ABOVE };
+ xcb_configure_window(conn, event->window, XCB_CONFIG_WINDOW_STACK_MODE, values);
+ xcb_flush(conn);
+ }
+}
+
+/*
+ * Called when the keyboard mapping changes. We update our symbols.
+ *
+ */
+static void handle_mapping_notify(xcb_mapping_notify_event_t *event) {
+ xcb_refresh_keyboard_mapping(symbols, event);
+
+ numlockmask = get_mod_mask(conn, symbols, XK_Num_Lock);
+}
+
+/*
+ * Called when the properties on the root window change, e.g. when the screen
+ * resolution changes. If so we update the window to cover the whole screen
+ * and also redraw the image, if any.
+ *
+ */
+void handle_screen_resize() {
+ xcb_get_geometry_cookie_t geomc;
+ xcb_get_geometry_reply_t *geom;
+ geomc = xcb_get_geometry(conn, screen->root);
+ if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) == NULL)
+ return;
+
+ if (last_resolution[0] == geom->width &&
+ last_resolution[1] == geom->height) {
+ free(geom);
+ return;
+ }
+
+ last_resolution[0] = geom->width;
+ last_resolution[1] = geom->height;
+
+ free(geom);
+
+#ifndef NOLIBCAIRO
+ redraw_screen();
+#endif
+
+ uint32_t mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
+ xcb_configure_window(conn, win, mask, last_resolution);
+ xcb_flush(conn);
}
/*
return 0;
}
+/*
+ * This callback is only a dummy, see xcb_prepare_cb and xcb_check_cb.
+ * See also man libev(3): "ev_prepare" and "ev_check" - customise your event loop
+ *
+ */
+static void xcb_got_event(EV_P_ struct ev_io *w, int revents) {
+ /* empty, because xcb_prepare_cb and xcb_check_cb are used */
+}
+
+/*
+ * Flush before blocking (and waiting for new events)
+ *
+ */
+static void xcb_prepare_cb(EV_P_ ev_prepare *w, int revents) {
+ xcb_flush(conn);
+}
+
+/*
+ * Instead of polling the X connection socket we leave this to
+ * xcb_poll_for_event() which knows better than we can ever know.
+ *
+ */
+static void xcb_check_cb(EV_P_ ev_check *w, int revents) {
+ xcb_generic_event_t *event;
+
+ while ((event = xcb_poll_for_event(conn)) != NULL) {
+ if (event->response_type == 0) {
+ xcb_generic_error_t *error = (xcb_generic_error_t*)event;
+ if (debug_mode)
+ fprintf(stderr, "X11 Error received! sequence 0x%x, error_code = %d\n",
+ error->sequence, error->error_code);
+ free(event);
+ continue;
+ }
+
+ /* Strip off the highest bit (set if the event is generated) */
+ int type = (event->response_type & 0x7F);
+ switch (type) {
+ case XCB_KEY_PRESS:
+ handle_key_press((xcb_key_press_event_t*)event);
+ break;
+
+ case XCB_KEY_RELEASE:
+ handle_key_release((xcb_key_release_event_t*)event);
+
+ /* If this was the backspace or escape key we are back at an
+ * empty input, so turn off the screen if DPMS is enabled */
+ if (dpms && input_position == 0)
+ dpms_turn_off_screen(conn);
+
+ break;
+
+ case XCB_VISIBILITY_NOTIFY:
+ handle_visibility_notify((xcb_visibility_notify_event_t*)event);
+ break;
+
+ case XCB_MAP_NOTIFY:
+ if (!dont_fork) {
+ /* After the first MapNotify, we never fork again. We don’t
+ * expect to get another MapNotify, but better be sure… */
+ dont_fork = true;
+
+ /* In the parent process, we exit */
+ if (fork() != 0)
+ exit(0);
+ }
+ break;
+
+ case XCB_MAPPING_NOTIFY:
+ handle_mapping_notify((xcb_mapping_notify_event_t*)event);
+ break;
+
+ case XCB_CONFIGURE_NOTIFY:
+ handle_screen_resize();
+ break;
+ }
+
+ free(event);
+ }
+}
+
int main(int argc, char *argv[]) {
- bool dont_fork = false;
- bool dpms = false;
- char color[7] = "ffffff";
char *username;
+#ifndef NOLIBCAIRO
char *image_path = NULL;
+#endif
int ret;
struct pam_conv conv = {conv_callback, NULL};
- int screen;
- cairo_surface_t *img = NULL;
- xcb_visualtype_t *vistype;
- xcb_generic_event_t *event;
- xcb_screen_t *scr;
- xcb_window_t win;
+ int nscreen;
+ int curs_choice = CURS_NONE;
char o;
int optind = 0;
struct option longopts[] = {
{"nofork", no_argument, NULL, 'n'},
{"beep", no_argument, NULL, 'b'},
{"dpms", no_argument, NULL, 'd'},
- {"image", required_argument, NULL, 'i'},
{"color", required_argument, NULL, 'c'},
- {"tiling", no_argument, NULL, 't'},
{"pointer", required_argument, NULL , 'p'},
+ {"debug", no_argument, NULL, 0},
+ {"help", no_argument, NULL, 'h'},
+ {"no-unlock-indicator", no_argument, NULL, 'u'},
+#ifndef NOLIBCAIRO
+ {"image", required_argument, NULL, 'i'},
+ {"tiling", no_argument, NULL, 't'},
+#endif
{NULL, no_argument, NULL, 0}
};
if ((username = getenv("USER")) == NULL)
errx(1, "USER environment variable not set, please set it.\n");
- while ((o = getopt_long(argc, argv, "vnbdi:c:tp:", longopts, &optind)) != -1) {
+ while ((o = getopt_long(argc, argv, "hvnbdc:p:u"
+#ifndef NOLIBCAIRO
+ "i:t"
+#endif
+ , longopts, &optind)) != -1) {
switch (o) {
case 'v':
- errx(EXIT_SUCCESS, "i3lock © 2010 Michael Stapelberg\n");
+ errx(EXIT_SUCCESS, "version " VERSION " © 2010-2012 Michael Stapelberg");
case 'n':
dont_fork = true;
break;
case 'd':
dpms = true;
break;
- case 'i':
- image_path = strdup(optarg);
- break;
case 'c': {
char *arg = optarg;
break;
}
+ case 'u':
+ unlock_indicator = false;
+ break;
+#ifndef NOLIBCAIRO
+ case 'i':
+ image_path = strdup(optarg);
+ break;
case 't':
- /* TODO: tile image */
+ tile = true;
break;
+#endif
case 'p':
- /* TODO: cursor */
+ if (!strcmp(optarg, "win")) {
+ curs_choice = CURS_WIN;
+ } else if (!strcmp(optarg, "default")) {
+ curs_choice = CURS_DEFAULT;
+ } else {
+ errx(1, "i3lock: Invalid pointer type given. Expected one of \"win\" or \"default\".\n");
+ }
+ break;
+ case 0:
+ if (strcmp(longopts[optind].name, "debug") == 0)
+ debug_mode = true;
break;
default:
- errx(1, "i3lock: Unknown option. Syntax: i3lock [-v] [-n] [-b] [-d] [-i image.png] [-c color] [-t] [-p win|default]\n");
+ errx(1, "Syntax: i3lock [-v] [-n] [-b] [-d] [-c color] [-u] [-p win|default]"
+#ifndef NOLIBCAIRO
+ " [-i image.png] [-t]"
+#else
+ " (compiled with NOLIBCAIRO)"
+#endif
+ );
}
}
+ /* We need (relatively) random numbers for highlighting a random part of
+ * the unlock indicator upon keypresses. */
+ srand(time(NULL));
+
/* Initialize PAM */
ret = pam_start("i3lock", username, &conv, &pam_handle);
if (ret != PAM_SUCCESS)
- errx(EXIT_FAILURE, "PAM: %s\n", pam_strerror(pam_handle, ret));
+ errx(EXIT_FAILURE, "PAM: %s", pam_strerror(pam_handle, ret));
+
+ /* Lock the area where we store the password in memory, we don’t want it to
+ * be swapped to disk. Since Linux 2.6.9, this does not require any
+ * privileges, just enough bytes in the RLIMIT_MEMLOCK limit. */
+ if (mlock(password, sizeof(password)) != 0)
+ err(EXIT_FAILURE, "Could not lock page in memory, check RLIMIT_MEMLOCK");
/* Initialize connection to X11 */
- if ((conn = xcb_connect(NULL, &screen)) == NULL)
- err(EXIT_FAILURE, "xcb_connect()");
+ if ((conn = xcb_connect(NULL, &nscreen)) == NULL ||
+ xcb_connection_has_error(conn))
+ errx(EXIT_FAILURE, "Could not connect to X11, maybe you need to set DISPLAY?");
- if (!dont_fork) {
- /* In the parent process, we exit */
- if (fork() != 0)
- return 0;
- }
+ xinerama_init();
+ xinerama_query_screens();
/* if DPMS is enabled, check if the X server really supports it */
if (dpms) {
xcb_dpms_capable_cookie_t dpmsc = xcb_dpms_capable(conn);
xcb_dpms_capable_reply_t *dpmsr;
- if ((dpmsr = xcb_dpms_capable_reply(conn, dpmsc, NULL)) && !dpmsr->capable) {
- fprintf(stderr, "Disabling DPMS, X server not DPMS capable\n");
- dpms = false;
+ if ((dpmsr = xcb_dpms_capable_reply(conn, dpmsc, NULL))) {
+ if (!dpmsr->capable) {
+ if (debug_mode)
+ fprintf(stderr, "Disabling DPMS, X server not DPMS capable\n");
+ dpms = false;
+ }
+ free(dpmsr);
}
}
- scr = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
- vistype = get_root_visual_type(scr);
+ screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
- /* open the fullscreen window and flush immediately afterwards so that X11
- * can generate an expose event while we load the PNG file (so that we are
- * ready to handle the expose event immediately afterwards) */
- win = open_fullscreen_window(conn, scr, color);
+ last_resolution[0] = screen->width_in_pixels;
+ last_resolution[1] = screen->height_in_pixels;
- grab_pointer_and_keyboard(conn, scr);
- if (image_path)
+#ifndef NOLIBCAIRO
+ if (image_path) {
+ /* Create a pixmap to render on, fill it with the background color */
img = cairo_image_surface_create_from_png(image_path);
+ }
+#endif
- symbols = xcb_key_symbols_alloc(conn);
- modeswitchmask = get_mod_mask(conn, symbols, XK_Mode_switch);
- numlockmask = get_mod_mask(conn, symbols, XK_Num_Lock);
-
+ /* Pixmap on which the image is rendered to (if any) */
+ xcb_pixmap_t bg_pixmap = draw_image(last_resolution);
- if (img) {
- /* Initialize cairo */
- cairo_surface_t *output;
- output = cairo_xcb_surface_create(conn, win, vistype,
- scr->width_in_pixels, scr->height_in_pixels);
- /* TODO: tiling of the image */
- ctx = cairo_create(output);
- cairo_set_source_surface(ctx, img, 0, 0);
+ /* open the fullscreen window, already with the correct pixmap in place */
+ win = open_fullscreen_window(conn, screen, color, bg_pixmap);
+ xcb_free_pixmap(conn, bg_pixmap);
- handle_expose_event();
- }
+ cursor = create_cursor(conn, screen, win, curs_choice);
- if (dpms)
- dpms_turn_off_screen(conn);
+ grab_pointer_and_keyboard(conn, screen, cursor);
- while ((event = xcb_wait_for_event(conn))) {
- if (event->response_type == 0)
- errx(1, "XCB: Invalid event received");
+ symbols = xcb_key_symbols_alloc(conn);
+ numlockmask = get_mod_mask(conn, symbols, XK_Num_Lock);
+ shiftlockmask = get_mod_mask(conn, symbols, XK_Shift_Lock);
+ capslockmask = get_mod_mask(conn, symbols, XK_Caps_Lock);
- /* Strip off the highest bit (set if the event is generated) */
- int type = (event->response_type & 0x7F);
+ DEBUG("shift lock mask = %d\n", shiftlockmask);
+ DEBUG("caps lock mask = %d\n", capslockmask);
- if (type == XCB_EXPOSE) {
- handle_expose_event();
- continue;
- }
+ if (dpms)
+ dpms_turn_off_screen(conn);
- if (type == XCB_KEY_PRESS) {
- handle_key_press((xcb_key_press_event_t*)event);
- continue;
- }
+ /* Initialize the libev event loop. */
+ main_loop = EV_DEFAULT;
+ if (main_loop == NULL)
+ errx(EXIT_FAILURE, "Could not initialize libev. Bad LIBEV_FLAGS?\n");
- if (type == XCB_KEY_RELEASE) {
- handle_key_release((xcb_key_release_event_t*)event);
+ struct ev_io *xcb_watcher = calloc(sizeof(struct ev_io), 1);
+ struct ev_check *xcb_check = calloc(sizeof(struct ev_check), 1);
+ struct ev_prepare *xcb_prepare = calloc(sizeof(struct ev_prepare), 1);
- /* If this was the backspace or escape key we are back at an
- * empty input, so turn off the screen if DPMS is enabled */
- if (dpms && input_position == 0)
- dpms_turn_off_screen(conn);
+ ev_io_init(xcb_watcher, xcb_got_event, xcb_get_file_descriptor(conn), EV_READ);
+ ev_io_start(main_loop, xcb_watcher);
- continue;
- }
+ ev_check_init(xcb_check, xcb_check_cb);
+ ev_check_start(main_loop, xcb_check);
- printf("WARNING: unhandled event of type %d\n", type);
- }
+ ev_prepare_init(xcb_prepare, xcb_prepare_cb);
+ ev_prepare_start(main_loop, xcb_prepare);
- return 0;
+ /* Invoke the event callback once to catch all the events which were
+ * received up until now. ev will only pick up new events (when the X11
+ * file descriptor becomes readable). */
+ ev_invoke(main_loop, xcb_check, 0);
+ ev_loop(main_loop, 0);
}
projects / i3 / i3lock / blobdiff