nsxiv/main.c

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/* Copyright 2011-2020 Bert Muennich
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* Copyright 2021-2023 nsxiv contributors
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*
* This file is a part of nsxiv.
*
* nsxiv is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License,
* or (at your option) any later version.
*
* nsxiv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with nsxiv. If not, see <http://www.gnu.org/licenses/>.
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*/
#include "nsxiv.h"
#define INCLUDE_MAPPINGS_CONFIG
#include "commands.h"
#include "config.h"
set autoreload timeout based on the latest event (#459) currently the autoreload feature of nsxiv is a bit unreliable because we try to load at the very first event we received. however, the writer might not be done writing and so we might try to load a truncated image (and fail). in the following ascii diagram, function S represents sleep and `+` sign represents writes by the writer. because we set the sleep (of 10ms) at the first event, subsequent writes by the writer doesn't influence our reload logic: S(10) load() nsxiv | | writer + + + + (done) time(ms): 00 05 10 15 after this patch, (assuming function T (re)sets a timeout), we will keep (re)setting a timeout on new events giving the writer more time to finish: T(10) T(10) T(10) T(10) load() nsxiv | | | | | writer + + + + (done) time(ms): 00 05 10 15 20 25 while this patch makes things significantly more robust, the problem here is inherently unsolvable since there's no way to tell whether the writer is done writing or not. for example, if user does something like `curl 'some.png' > test.png` then curl might stop for a second or two in the middle of writing due to internet issues - which will make nsxiv drop the image. this patch also increases the autoreload delay from 10ms to now 128ms instead to decrease chances of false failures. ref: https://github.com/0ion9/sxiv/commit/6ae2df6ed549c2cc119bd7d235b75154fc042d2d partially-fixes: https://codeberg.org/nsxiv/nsxiv/issues/456 commit-message-by: NRK Reviewed-on: https://codeberg.org/nsxiv/nsxiv/pulls/459 Reviewed-by: eylles <eylles@noreply.codeberg.org>
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#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <locale.h>
#include <poll.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>
#include <X11/XF86keysym.h>
#include <X11/keysym.h>
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#define MODMASK(mask) (USED_MODMASK & (mask))
#define BAR_SEP " "
#define TV_DIFF(t1,t2) (((t1)->tv_sec - (t2)->tv_sec ) * 1000 + \
((t1)->tv_usec - (t2)->tv_usec) / 1000)
#define TV_ADD_MSEC(tv, t) \
do { \
(tv)->tv_sec += (t) / 1000; \
(tv)->tv_usec += (t) % 1000 * 1000; \
} while (0)
typedef struct {
int err;
char *cmd;
} extcmd_t;
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/* these are not declared in nsxiv.h, as it causes too many -Wshadow warnings */
arl_t arl;
img_t img;
tns_t tns;
win_t win;
appmode_t mode;
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fileinfo_t *files;
int filecnt, fileidx;
int alternate;
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int markcnt;
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int markidx;
int prefix;
const XButtonEvent *xbutton_ev;
set autoreload timeout based on the latest event (#459) currently the autoreload feature of nsxiv is a bit unreliable because we try to load at the very first event we received. however, the writer might not be done writing and so we might try to load a truncated image (and fail). in the following ascii diagram, function S represents sleep and `+` sign represents writes by the writer. because we set the sleep (of 10ms) at the first event, subsequent writes by the writer doesn't influence our reload logic: S(10) load() nsxiv | | writer + + + + (done) time(ms): 00 05 10 15 after this patch, (assuming function T (re)sets a timeout), we will keep (re)setting a timeout on new events giving the writer more time to finish: T(10) T(10) T(10) T(10) load() nsxiv | | | | | writer + + + + (done) time(ms): 00 05 10 15 20 25 while this patch makes things significantly more robust, the problem here is inherently unsolvable since there's no way to tell whether the writer is done writing or not. for example, if user does something like `curl 'some.png' > test.png` then curl might stop for a second or two in the middle of writing due to internet issues - which will make nsxiv drop the image. this patch also increases the autoreload delay from 10ms to now 128ms instead to decrease chances of false failures. ref: https://github.com/0ion9/sxiv/commit/6ae2df6ed549c2cc119bd7d235b75154fc042d2d partially-fixes: https://codeberg.org/nsxiv/nsxiv/issues/456 commit-message-by: NRK Reviewed-on: https://codeberg.org/nsxiv/nsxiv/pulls/459 Reviewed-by: eylles <eylles@noreply.codeberg.org>
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static void autoreload(void);
static bool extprefix;
static bool resized = false;
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static struct {
extcmd_t f, ft;
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int fd;
pid_t pid;
} info, wintitle;
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static struct {
extcmd_t f;
bool warned;
} keyhandler;
static struct {
timeout_f handler;
struct timeval when;
bool active;
} timeouts[] = {
set autoreload timeout based on the latest event (#459) currently the autoreload feature of nsxiv is a bit unreliable because we try to load at the very first event we received. however, the writer might not be done writing and so we might try to load a truncated image (and fail). in the following ascii diagram, function S represents sleep and `+` sign represents writes by the writer. because we set the sleep (of 10ms) at the first event, subsequent writes by the writer doesn't influence our reload logic: S(10) load() nsxiv | | writer + + + + (done) time(ms): 00 05 10 15 after this patch, (assuming function T (re)sets a timeout), we will keep (re)setting a timeout on new events giving the writer more time to finish: T(10) T(10) T(10) T(10) load() nsxiv | | | | | writer + + + + (done) time(ms): 00 05 10 15 20 25 while this patch makes things significantly more robust, the problem here is inherently unsolvable since there's no way to tell whether the writer is done writing or not. for example, if user does something like `curl 'some.png' > test.png` then curl might stop for a second or two in the middle of writing due to internet issues - which will make nsxiv drop the image. this patch also increases the autoreload delay from 10ms to now 128ms instead to decrease chances of false failures. ref: https://github.com/0ion9/sxiv/commit/6ae2df6ed549c2cc119bd7d235b75154fc042d2d partially-fixes: https://codeberg.org/nsxiv/nsxiv/issues/456 commit-message-by: NRK Reviewed-on: https://codeberg.org/nsxiv/nsxiv/pulls/459 Reviewed-by: eylles <eylles@noreply.codeberg.org>
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{ autoreload },
{ redraw },
{ reset_cursor },
{ slideshow },
{ animate },
{ clear_resize },
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};
/*
* function implementations
*/
static void cleanup(void)
{
img_close(&img, false);
arl_cleanup(&arl);
tns_free(&tns);
win_close(&win);
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}
static bool xgetline(char **lineptr, size_t *n)
{
ssize_t len = getdelim(lineptr, n, options->using_null ? '\0' : '\n', stdin);
if (!options->using_null && len > 0 && (*lineptr)[len - 1] == '\n')
(*lineptr)[len - 1] = '\0';
return len > 0;
}
static int fncmp(const void *a, const void *b)
{
return strcoll(((fileinfo_t *)a)->name, ((fileinfo_t *)b)->name);
}
static void check_add_file(const char *filename, bool given)
{
char *path;
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if (*filename == '\0')
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return;
if (access(filename, R_OK) < 0 ||
(path = realpath(filename, NULL)) == NULL)
{
if (given)
error(0, errno, "%s", filename);
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return;
}
if (fileidx == filecnt) {
filecnt *= 2;
files = erealloc(files, filecnt * sizeof(*files));
memset(&files[filecnt / 2], 0, filecnt / 2 * sizeof(*files));
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}
files[fileidx].name = estrdup(filename);
files[fileidx].path = path;
if (given)
files[fileidx].flags |= FF_WARN;
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fileidx++;
}
static void add_entry(const char *entry_name)
{
int start;
char *filename;
struct stat fstats;
r_dir_t dir;
if (stat(entry_name, &fstats) < 0) {
error(0, errno, "%s", entry_name);
return;
}
if (!S_ISDIR(fstats.st_mode)) {
check_add_file(entry_name, true);
} else {
if (r_opendir(&dir, entry_name, options->recursive) < 0) {
error(0, errno, "%s", entry_name);
return;
}
start = fileidx;
while ((filename = r_readdir(&dir, true)) != NULL) {
check_add_file(filename, false);
free(filename);
}
r_closedir(&dir);
if (fileidx - start > 1)
qsort(files + start, fileidx - start, sizeof(*files), fncmp);
}
}
void remove_file(int n, bool manual)
{
if (n < 0 || n >= filecnt)
return;
if (filecnt == 1) {
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if (!manual)
fprintf(stderr, "%s: no more files to display, aborting\n", progname);
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exit(manual ? EXIT_SUCCESS : EXIT_FAILURE);
}
if (files[n].flags & FF_MARK)
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markcnt--;
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if (files[n].path != files[n].name)
free((void *)files[n].path);
free((void *)files[n].name);
if (tns.thumbs != NULL)
tns_unload(&tns, n);
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if (n + 1 < filecnt) {
if (tns.thumbs != NULL) {
memmove(tns.thumbs + n, tns.thumbs + n + 1,
(filecnt - n - 1) * sizeof(*tns.thumbs));
memset(tns.thumbs + filecnt - 1, 0, sizeof(*tns.thumbs));
}
memmove(files + n, files + n + 1, (filecnt - n - 1) * sizeof(*files));
}
filecnt--;
if (fileidx > n || fileidx == filecnt)
fileidx--;
if (alternate > n || alternate == filecnt)
alternate--;
if (markidx > n || markidx == filecnt)
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markidx--;
}
void set_timeout(timeout_f handler, int time, bool overwrite)
{
unsigned int i;
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for (i = 0; i < ARRLEN(timeouts); i++) {
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if (timeouts[i].handler == handler) {
if (!timeouts[i].active || overwrite) {
gettimeofday(&timeouts[i].when, 0);
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TV_ADD_MSEC(&timeouts[i].when, time);
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timeouts[i].active = true;
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}
return;
}
}
}
void reset_timeout(timeout_f handler)
{
unsigned int i;
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for (i = 0; i < ARRLEN(timeouts); i++) {
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if (timeouts[i].handler == handler) {
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timeouts[i].active = false;
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return;
}
}
}
static bool check_timeouts(int *t)
{
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int i = 0, tdiff, tmin = -1;
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struct timeval now;
while (i < (int)ARRLEN(timeouts)) {
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if (timeouts[i].active) {
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gettimeofday(&now, 0);
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tdiff = TV_DIFF(&timeouts[i].when, &now);
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if (tdiff <= 0) {
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timeouts[i].active = false;
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if (timeouts[i].handler != NULL)
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timeouts[i].handler();
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i = tmin = -1;
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} else if (tmin < 0 || tdiff < tmin) {
tmin = tdiff;
}
}
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i++;
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}
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if (tmin > 0 && t != NULL)
*t = tmin;
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return tmin > 0;
}
set autoreload timeout based on the latest event (#459) currently the autoreload feature of nsxiv is a bit unreliable because we try to load at the very first event we received. however, the writer might not be done writing and so we might try to load a truncated image (and fail). in the following ascii diagram, function S represents sleep and `+` sign represents writes by the writer. because we set the sleep (of 10ms) at the first event, subsequent writes by the writer doesn't influence our reload logic: S(10) load() nsxiv | | writer + + + + (done) time(ms): 00 05 10 15 after this patch, (assuming function T (re)sets a timeout), we will keep (re)setting a timeout on new events giving the writer more time to finish: T(10) T(10) T(10) T(10) load() nsxiv | | | | | writer + + + + (done) time(ms): 00 05 10 15 20 25 while this patch makes things significantly more robust, the problem here is inherently unsolvable since there's no way to tell whether the writer is done writing or not. for example, if user does something like `curl 'some.png' > test.png` then curl might stop for a second or two in the middle of writing due to internet issues - which will make nsxiv drop the image. this patch also increases the autoreload delay from 10ms to now 128ms instead to decrease chances of false failures. ref: https://github.com/0ion9/sxiv/commit/6ae2df6ed549c2cc119bd7d235b75154fc042d2d partially-fixes: https://codeberg.org/nsxiv/nsxiv/issues/456 commit-message-by: NRK Reviewed-on: https://codeberg.org/nsxiv/nsxiv/pulls/459 Reviewed-by: eylles <eylles@noreply.codeberg.org>
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static void autoreload(void)
{
if (img.autoreload_pending) {
img_close(&img, true);
/* load_image() sets autoreload_pending to false */
load_image(fileidx);
redraw();
} else {
assert(!"unreachable");
}
}
static void kill_close(pid_t pid, int *fd)
{
if (fd != NULL && *fd != -1) {
kill(pid, SIGTERM);
close(*fd);
*fd = -1;
}
}
static void close_title(void)
{
kill_close(wintitle.pid, &wintitle.fd);
}
static void read_title(void)
{
ssize_t n;
char buf[512];
if ((n = read(wintitle.fd, buf, sizeof(buf) - 1)) > 0) {
buf[n] = '\0';
win_set_title(&win, buf, n);
}
close_title();
}
static void open_title(void)
{
char *argv[8];
char w[12] = "", h[12] = "", z[12] = "", fidx[12], fcnt[12];
if (wintitle.f.err)
return;
close_title();
if (mode == MODE_IMAGE) {
snprintf(w, ARRLEN(w), "%d", img.w);
snprintf(h, ARRLEN(h), "%d", img.h);
snprintf(z, ARRLEN(z), "%d", (int)(img.zoom * 100));
}
snprintf(fidx, ARRLEN(fidx), "%d", fileidx + 1);
snprintf(fcnt, ARRLEN(fcnt), "%d", filecnt);
construct_argv(argv, ARRLEN(argv), wintitle.f.cmd, files[fileidx].path,
fidx, fcnt, w, h, z, NULL);
if ((wintitle.pid = spawn(&wintitle.fd, NULL, argv)) > 0)
fcntl(wintitle.fd, F_SETFL, O_NONBLOCK);
}
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void close_info(void)
{
kill_close(info.pid, &info.fd);
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}
void open_info(void)
{
char *argv[6], w[12] = "", h[12] = "";
char *cmd = mode == MODE_IMAGE ? info.f.cmd : info.ft.cmd;
bool ferr = mode == MODE_IMAGE ? info.f.err : info.ft.err;
if (ferr || info.fd >= 0 || win.bar.h == 0)
return;
win.bar.l.buf[0] = '\0';
if (mode == MODE_IMAGE) {
snprintf(w, sizeof(w), "%d", img.w);
snprintf(h, sizeof(h), "%d", img.h);
}
construct_argv(argv, ARRLEN(argv), cmd, files[fileidx].name, w, h,
files[fileidx].path, NULL);
if ((info.pid = spawn(&info.fd, NULL, argv)) > 0)
fcntl(info.fd, F_SETFL, O_NONBLOCK);
}
static void read_info(void)
{
ssize_t i, n;
if ((n = read(info.fd, win.bar.l.buf, win.bar.l.size - 1)) > 0) {
win.bar.l.buf[n] = '\0';
for (i = 0; i < n; ++i) {
if (win.bar.l.buf[i] == '\n')
win.bar.l.buf[i] = ' ';
}
win_draw(&win);
}
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close_info();
}
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void load_image(int new)
{
bool prev = new < fileidx;
static int current;
if (new < 0 || new >= filecnt)
return;
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if (win.xwin != None)
win_set_cursor(&win, CURSOR_WATCH);
set autoreload timeout based on the latest event (#459) currently the autoreload feature of nsxiv is a bit unreliable because we try to load at the very first event we received. however, the writer might not be done writing and so we might try to load a truncated image (and fail). in the following ascii diagram, function S represents sleep and `+` sign represents writes by the writer. because we set the sleep (of 10ms) at the first event, subsequent writes by the writer doesn't influence our reload logic: S(10) load() nsxiv | | writer + + + + (done) time(ms): 00 05 10 15 after this patch, (assuming function T (re)sets a timeout), we will keep (re)setting a timeout on new events giving the writer more time to finish: T(10) T(10) T(10) T(10) load() nsxiv | | | | | writer + + + + (done) time(ms): 00 05 10 15 20 25 while this patch makes things significantly more robust, the problem here is inherently unsolvable since there's no way to tell whether the writer is done writing or not. for example, if user does something like `curl 'some.png' > test.png` then curl might stop for a second or two in the middle of writing due to internet issues - which will make nsxiv drop the image. this patch also increases the autoreload delay from 10ms to now 128ms instead to decrease chances of false failures. ref: https://github.com/0ion9/sxiv/commit/6ae2df6ed549c2cc119bd7d235b75154fc042d2d partially-fixes: https://codeberg.org/nsxiv/nsxiv/issues/456 commit-message-by: NRK Reviewed-on: https://codeberg.org/nsxiv/nsxiv/pulls/459 Reviewed-by: eylles <eylles@noreply.codeberg.org>
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reset_timeout(autoreload);
reset_timeout(slideshow);
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set autoreload timeout based on the latest event (#459) currently the autoreload feature of nsxiv is a bit unreliable because we try to load at the very first event we received. however, the writer might not be done writing and so we might try to load a truncated image (and fail). in the following ascii diagram, function S represents sleep and `+` sign represents writes by the writer. because we set the sleep (of 10ms) at the first event, subsequent writes by the writer doesn't influence our reload logic: S(10) load() nsxiv | | writer + + + + (done) time(ms): 00 05 10 15 after this patch, (assuming function T (re)sets a timeout), we will keep (re)setting a timeout on new events giving the writer more time to finish: T(10) T(10) T(10) T(10) load() nsxiv | | | | | writer + + + + (done) time(ms): 00 05 10 15 20 25 while this patch makes things significantly more robust, the problem here is inherently unsolvable since there's no way to tell whether the writer is done writing or not. for example, if user does something like `curl 'some.png' > test.png` then curl might stop for a second or two in the middle of writing due to internet issues - which will make nsxiv drop the image. this patch also increases the autoreload delay from 10ms to now 128ms instead to decrease chances of false failures. ref: https://github.com/0ion9/sxiv/commit/6ae2df6ed549c2cc119bd7d235b75154fc042d2d partially-fixes: https://codeberg.org/nsxiv/nsxiv/issues/456 commit-message-by: NRK Reviewed-on: https://codeberg.org/nsxiv/nsxiv/pulls/459 Reviewed-by: eylles <eylles@noreply.codeberg.org>
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if (new != current) {
alternate = current;
set autoreload timeout based on the latest event (#459) currently the autoreload feature of nsxiv is a bit unreliable because we try to load at the very first event we received. however, the writer might not be done writing and so we might try to load a truncated image (and fail). in the following ascii diagram, function S represents sleep and `+` sign represents writes by the writer. because we set the sleep (of 10ms) at the first event, subsequent writes by the writer doesn't influence our reload logic: S(10) load() nsxiv | | writer + + + + (done) time(ms): 00 05 10 15 after this patch, (assuming function T (re)sets a timeout), we will keep (re)setting a timeout on new events giving the writer more time to finish: T(10) T(10) T(10) T(10) load() nsxiv | | | | | writer + + + + (done) time(ms): 00 05 10 15 20 25 while this patch makes things significantly more robust, the problem here is inherently unsolvable since there's no way to tell whether the writer is done writing or not. for example, if user does something like `curl 'some.png' > test.png` then curl might stop for a second or two in the middle of writing due to internet issues - which will make nsxiv drop the image. this patch also increases the autoreload delay from 10ms to now 128ms instead to decrease chances of false failures. ref: https://github.com/0ion9/sxiv/commit/6ae2df6ed549c2cc119bd7d235b75154fc042d2d partially-fixes: https://codeberg.org/nsxiv/nsxiv/issues/456 commit-message-by: NRK Reviewed-on: https://codeberg.org/nsxiv/nsxiv/pulls/459 Reviewed-by: eylles <eylles@noreply.codeberg.org>
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img.autoreload_pending = false;
}
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img_close(&img, false);
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while (!img_load(&img, &files[new])) {
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remove_file(new, false);
if (new >= filecnt)
new = filecnt - 1;
else if (new > 0 && prev)
new -= 1;
}
files[new].flags &= ~FF_WARN;
fileidx = current = new;
arl_add(&arl, files[fileidx].path);
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if (img.multi.cnt > 0 && img.multi.animate)
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set_timeout(animate, img.multi.frames[img.multi.sel].delay, true);
else
reset_timeout(animate);
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}
bool mark_image(int n, bool on)
{
markidx = n;
if (!!(files[n].flags & FF_MARK) != on) {
files[n].flags ^= FF_MARK;
markcnt += on ? 1 : -1;
if (mode == MODE_THUMB)
tns_mark(&tns, n, on);
return true;
}
return false;
}
static void bar_put(win_bar_t *bar, const char *fmt, ...)
{
size_t len = bar->size - (bar->p - bar->buf), n;
va_list ap;
va_start(ap, fmt);
n = vsnprintf(bar->p, len, fmt, ap);
bar->p += MIN(len, n);
va_end(ap);
}
static void update_info(void)
{
unsigned int i, fn, fw;
const char *mark;
win_bar_t *l = &win.bar.l, *r = &win.bar.r;
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static struct {
const char *filepath;
int fileidx;
float zoom;
appmode_t mode;
} prev;
if (prev.fileidx != fileidx || prev.mode != mode ||
(prev.filepath == NULL || !STREQ(prev.filepath, files[fileidx].path)))
{
close_info();
open_info();
open_title();
} else if (mode == MODE_IMAGE && prev.zoom != img.zoom) {
open_title();
}
/* update bar contents */
if (win.bar.h == 0 || extprefix)
return;
free((char *)prev.filepath);
prev.filepath = estrdup(files[fileidx].path);
prev.fileidx = fileidx;
prev.zoom = img.zoom;
prev.mode = mode;
for (fw = 0, i = filecnt; i > 0; fw++, i /= 10)
;
mark = files[fileidx].flags & FF_MARK ? "* " : "";
l->p = l->buf;
r->p = r->buf;
if (mode == MODE_THUMB) {
if (tns.loadnext < tns.end)
bar_put(r, "Loading... %0*d | ", fw, tns.loadnext + 1);
else if (tns.initnext < filecnt)
bar_put(r, "Caching... %0*d | ", fw, tns.initnext + 1);
bar_put(r, "%s%0*d/%d", mark, fw, fileidx + 1, filecnt);
if (info.ft.err)
strncpy(l->buf, files[fileidx].name, l->size);
2011-04-11 09:53:00 +00:00
} else {
bar_put(r, "%s", mark);
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if (img.ss.on) {
if (img.ss.delay % 10 != 0)
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bar_put(r, "%2.1fs" BAR_SEP, (float)img.ss.delay / 10);
2016-12-01 19:33:24 +00:00
else
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bar_put(r, "%ds" BAR_SEP, img.ss.delay / 10);
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}
if (img.gamma)
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bar_put(r, "G%+d" BAR_SEP, img.gamma);
if (img.brightness)
bar_put(r, "B%+d" BAR_SEP, img.brightness);
if (img.contrast)
bar_put(r, "C%+d" BAR_SEP, img.contrast);
bar_put(r, "%3d%%" BAR_SEP, (int)(img.zoom * 100.0));
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if (img.multi.cnt > 0) {
for (fn = 0, i = img.multi.cnt; i > 0; fn++, i /= 10)
;
2017-12-07 20:44:40 +00:00
bar_put(r, "%0*d/%d" BAR_SEP, fn, img.multi.sel + 1, img.multi.cnt);
2012-02-12 18:00:41 +00:00
}
bar_put(r, "%0*d/%d", fw, fileidx + 1, filecnt);
if (info.f.err)
strncpy(l->buf, files[fileidx].name, l->size);
2011-04-11 09:53:00 +00:00
}
}
int nav_button(void)
{
int x, y, nw;
if (NAV_WIDTH == 0)
return 1;
win_cursor_pos(&win, &x, &y);
nw = NAV_IS_REL ? win.w * NAV_WIDTH / 100 : NAV_WIDTH;
nw = MIN(nw, ((int)win.w + 1) / 2);
if (x < nw)
return 0;
else if (x < (int)win.w - nw)
return 1;
else
return 2;
}
void redraw(void)
{
int t;
if (mode == MODE_IMAGE) {
img_render(&img);
if (img.ss.on) {
2016-12-01 19:33:24 +00:00
t = img.ss.delay * 100;
if (img.multi.cnt > 0 && img.multi.animate)
t = MAX(t, img.multi.length);
set_timeout(slideshow, t, false);
}
} else {
tns_render(&tns);
}
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update_info();
win_draw(&win);
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reset_timeout(redraw);
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reset_cursor();
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}
void reset_cursor(void)
{
int c;
unsigned int i;
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cursor_t cursor = CURSOR_NONE;
if (mode == MODE_IMAGE) {
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for (i = 0; i < ARRLEN(timeouts); i++) {
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if (timeouts[i].handler == reset_cursor) {
if (timeouts[i].active) {
c = nav_button();
c = MAX(fileidx > 0 ? 0 : 1, c);
c = MIN(fileidx + 1 < filecnt ? 2 : 1, c);
cursor = imgcursor[c];
}
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break;
}
}
} else {
if (tns.loadnext < tns.end || tns.initnext < filecnt)
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cursor = CURSOR_WATCH;
else
cursor = CURSOR_ARROW;
}
win_set_cursor(&win, cursor);
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}
void animate(void)
{
2014-09-01 18:41:27 +00:00
if (img_frame_animate(&img)) {
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set_timeout(animate, img.multi.frames[img.multi.sel].delay, true);
redraw();
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}
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}
void slideshow(void)
{
load_image(fileidx + 1 < filecnt ? fileidx + 1 : 0);
redraw();
}
void clear_resize(void)
{
resized = false;
}
static Bool is_input_ev(Display *dpy, XEvent *ev, XPointer arg)
{
return ev->type == ButtonPress || ev->type == KeyPress;
}
void handle_key_handler(bool init)
{
extprefix = init;
if (win.bar.h == 0)
return;
if (init) {
snprintf(win.bar.r.buf, win.bar.r.size,
"Getting key handler input (%s to abort)...",
XKeysymToString(KEYHANDLER_ABORT));
} else { /* abort */
update_info();
}
win_draw(&win);
}
static bool run_key_handler(const char *key, unsigned int mask)
{
FILE *pfs;
bool marked = mode == MODE_THUMB && markcnt > 0;
bool changed = false;
pid_t pid;
int writefd, f, i;
int fcnt = marked ? markcnt : 1;
char kstr[32];
struct stat *oldst, st;
XEvent dump;
char *argv[3];
if (keyhandler.f.err) {
if (!keyhandler.warned) {
error(0, keyhandler.f.err, "%s", keyhandler.f.cmd);
keyhandler.warned = true;
}
return false;
}
if (key == NULL)
return false;
strncpy(win.bar.r.buf, "Running key handler...", win.bar.r.size);
win_draw(&win);
win_set_cursor(&win, CURSOR_WATCH);
setenv("NSXIV_USING_NULL", options->using_null ? "1" : "0", 1);
snprintf(kstr, sizeof(kstr), "%s%s%s%s",
mask & ControlMask ? "C-" : "",
mask & Mod1Mask ? "M-" : "",
mask & ShiftMask ? "S-" : "", key);
construct_argv(argv, ARRLEN(argv), keyhandler.f.cmd, kstr, NULL);
if ((pid = spawn(NULL, &writefd, argv)) < 0)
return false;
if ((pfs = fdopen(writefd, "w")) == NULL) {
error(0, errno, "open pipe");
close(writefd);
return false;
}
oldst = emalloc(fcnt * sizeof(*oldst));
for (f = i = 0; f < fcnt; i++) {
if ((marked && (files[i].flags & FF_MARK)) || (!marked && i == fileidx)) {
stat(files[i].path, &oldst[f]);
fprintf(pfs, "%s%c", files[i].name, options->using_null ? '\0' : '\n');
f++;
}
}
fclose(pfs);
while (waitpid(pid, NULL, 0) == -1 && errno == EINTR)
;
for (f = i = 0; f < fcnt; i++) {
if ((marked && (files[i].flags & FF_MARK)) || (!marked && i == fileidx)) {
if (stat(files[i].path, &st) != 0 ||
memcmp(&oldst[f].st_mtime, &st.st_mtime, sizeof(st.st_mtime)) != 0)
{
if (tns.thumbs != NULL) {
tns_unload(&tns, i);
tns.loadnext = MIN(tns.loadnext, i);
}
changed = true;
}
f++;
}
}
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/* drop user input events that occurred while running the key handler */
while (XCheckIfEvent(win.env.dpy, &dump, is_input_ev, NULL))
;
if (mode == MODE_IMAGE && changed) {
img_close(&img, true);
load_image(fileidx);
} else {
update_info();
}
free(oldst);
reset_cursor();
return true;
}
static bool process_bindings(const keymap_t *bindings, unsigned int len, KeySym ksym_or_button,
unsigned int state, unsigned int implicit_mod)
{
unsigned int i;
bool dirty = false;
for (i = 0; i < len; i++) {
if (bindings[i].ksym_or_button == ksym_or_button &&
MODMASK(bindings[i].mask | implicit_mod) == MODMASK(state) &&
bindings[i].cmd.func != NULL &&
(bindings[i].cmd.mode == MODE_ALL || bindings[i].cmd.mode == mode))
{
if (bindings[i].cmd.func(bindings[i].arg))
dirty = true;
}
}
return dirty;
}
static void on_keypress(XKeyEvent *kev)
{
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unsigned int sh = 0;
KeySym ksym, shksym;
2018-01-09 18:37:56 +00:00
char dummy, key;
bool dirty = false;
2018-01-09 18:37:56 +00:00
XLookupString(kev, &key, 1, &ksym, NULL);
if (kev->state & ShiftMask) {
kev->state &= ~ShiftMask;
2018-01-09 18:37:56 +00:00
XLookupString(kev, &dummy, 1, &shksym, NULL);
kev->state |= ShiftMask;
2018-01-09 18:37:56 +00:00
if (ksym != shksym)
sh = ShiftMask;
}
if (IsModifierKey(ksym))
return;
if (extprefix && ksym == KEYHANDLER_ABORT && MODMASK(kev->state) == 0) {
handle_key_handler(false);
2014-01-31 12:21:23 +00:00
} else if (extprefix) {
if ((dirty = run_key_handler(XKeysymToString(ksym), kev->state & ~sh)))
extprefix = false;
else
handle_key_handler(false);
2014-01-31 12:21:23 +00:00
} else if (key >= '0' && key <= '9') {
/* number prefix for commands */
prefix = prefix * 10 + (int)(key - '0');
return;
} else {
dirty = process_bindings(keys, ARRLEN(keys), ksym, kev->state, sh);
}
if (dirty)
redraw();
prefix = 0;
}
static void on_buttonpress(const XButtonEvent *bev)
{
bool dirty = false;
if (mode == MODE_IMAGE) {
2011-09-11 19:01:24 +00:00
set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
reset_cursor();
dirty = process_bindings(buttons_img, ARRLEN(buttons_img), bev->button, bev->state, 0);
} else { /* thumbnail mode */
dirty = process_bindings(buttons_tns, ARRLEN(buttons_tns), bev->button, bev->state, 0);
}
if (dirty)
redraw();
prefix = 0;
}
static void run(void)
{
enum { FD_X, FD_INFO, FD_TITLE, FD_ARL, FD_CNT };
struct pollfd pfd[FD_CNT];
int timeout = 0;
bool discard, init_thumb, load_thumb, to_set;
XEvent ev, nextev;
xbutton_ev = &ev.xbutton;
2011-09-29 10:43:36 +00:00
while (true) {
to_set = check_timeouts(&timeout);
init_thumb = mode == MODE_THUMB && tns.initnext < filecnt;
load_thumb = mode == MODE_THUMB && tns.loadnext < tns.end;
2011-09-02 02:33:44 +00:00
if ((init_thumb || load_thumb || to_set || info.fd != -1 || arl.fd != -1) &&
XPending(win.env.dpy) == 0)
{
if (load_thumb) {
set_timeout(redraw, TO_REDRAW_THUMBS, false);
if (!tns_load(&tns, tns.loadnext, false, false)) {
remove_file(tns.loadnext, false);
tns.dirty = true;
}
if (tns.loadnext >= tns.end) {
open_info();
redraw();
}
} else if (init_thumb) {
set_timeout(redraw, TO_REDRAW_THUMBS, false);
if (!tns_load(&tns, tns.initnext, false, true))
remove_file(tns.initnext, false);
} else {
pfd[FD_X].fd = ConnectionNumber(win.env.dpy);
pfd[FD_INFO].fd = info.fd;
pfd[FD_TITLE].fd = wintitle.fd;
pfd[FD_ARL].fd = arl.fd;
pfd[FD_X].events = pfd[FD_INFO].events = pfd[FD_TITLE].events = pfd[FD_ARL].events = POLLIN;
if (poll(pfd, ARRLEN(pfd), to_set ? timeout : -1) < 0)
continue;
if (pfd[FD_INFO].revents & POLLIN)
read_info();
if (pfd[FD_TITLE].revents & POLLIN)
read_title();
set autoreload timeout based on the latest event (#459) currently the autoreload feature of nsxiv is a bit unreliable because we try to load at the very first event we received. however, the writer might not be done writing and so we might try to load a truncated image (and fail). in the following ascii diagram, function S represents sleep and `+` sign represents writes by the writer. because we set the sleep (of 10ms) at the first event, subsequent writes by the writer doesn't influence our reload logic: S(10) load() nsxiv | | writer + + + + (done) time(ms): 00 05 10 15 after this patch, (assuming function T (re)sets a timeout), we will keep (re)setting a timeout on new events giving the writer more time to finish: T(10) T(10) T(10) T(10) load() nsxiv | | | | | writer + + + + (done) time(ms): 00 05 10 15 20 25 while this patch makes things significantly more robust, the problem here is inherently unsolvable since there's no way to tell whether the writer is done writing or not. for example, if user does something like `curl 'some.png' > test.png` then curl might stop for a second or two in the middle of writing due to internet issues - which will make nsxiv drop the image. this patch also increases the autoreload delay from 10ms to now 128ms instead to decrease chances of false failures. ref: https://github.com/0ion9/sxiv/commit/6ae2df6ed549c2cc119bd7d235b75154fc042d2d partially-fixes: https://codeberg.org/nsxiv/nsxiv/issues/456 commit-message-by: NRK Reviewed-on: https://codeberg.org/nsxiv/nsxiv/pulls/459 Reviewed-by: eylles <eylles@noreply.codeberg.org>
2023-08-28 10:28:57 +00:00
if ((pfd[FD_ARL].revents & POLLIN) && arl_handle(&arl)) {
img.autoreload_pending = true;
set_timeout(autoreload, TO_AUTORELOAD, true);
}
}
continue;
}
do {
XNextEvent(win.env.dpy, &ev);
discard = false;
if (XEventsQueued(win.env.dpy, QueuedAlready) > 0) {
XPeekEvent(win.env.dpy, &nextev);
switch (ev.type) {
case ConfigureNotify:
case MotionNotify:
discard = ev.type == nextev.type;
break;
case KeyPress:
discard = (nextev.type == KeyPress || nextev.type == KeyRelease) &&
ev.xkey.keycode == nextev.xkey.keycode;
break;
}
}
} while (discard);
switch (ev.type) { /* handle events */
case ButtonPress:
on_buttonpress(&ev.xbutton);
break;
case ClientMessage:
if ((Atom)ev.xclient.data.l[0] == atoms[ATOM_WM_DELETE_WINDOW])
cg_quit(EXIT_SUCCESS);
break;
case DestroyNotify:
cg_quit(EXIT_FAILURE);
break;
case ConfigureNotify:
if (win_configure(&win, &ev.xconfigure)) {
2011-09-29 10:43:36 +00:00
if (mode == MODE_IMAGE) {
img.dirty = true;
img.checkpan = true;
} else {
tns.dirty = true;
2011-09-29 10:43:36 +00:00
}
if (!resized) {
redraw();
set_timeout(clear_resize, TO_REDRAW_RESIZE, false);
resized = true;
} else {
set_timeout(redraw, TO_REDRAW_RESIZE, false);
}
}
break;
case KeyPress:
on_keypress(&ev.xkey);
break;
case MotionNotify:
if (mode == MODE_IMAGE) {
set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
reset_cursor();
}
break;
}
}
}
static void setup_signal(int sig, void (*handler)(int sig), int flags)
2018-02-18 13:32:55 +00:00
{
struct sigaction sa;
sa.sa_handler = handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = flags;
if (sigaction(sig, &sa, NULL) < 0)
2018-02-18 13:32:55 +00:00
error(EXIT_FAILURE, errno, "signal %d", sig);
}
int main(int argc, char *argv[])
{
int i;
2011-05-29 09:45:58 +00:00
size_t n;
const char *homedir, *dsuffix = "";
setup_signal(SIGCHLD, SIG_DFL, SA_RESTART | SA_NOCLDSTOP | SA_NOCLDWAIT);
setup_signal(SIGPIPE, SIG_IGN, 0);
setlocale(LC_COLLATE, "");
2011-01-19 17:16:44 +00:00
parse_options(argc, argv);
2011-04-08 12:44:00 +00:00
if (options->clean_cache) {
tns_init(&tns, NULL, NULL, NULL, NULL);
tns_clean_cache();
2011-09-26 13:40:07 +00:00
exit(EXIT_SUCCESS);
2011-04-08 12:44:00 +00:00
}
if (options->filecnt == 0 && !options->from_stdin) {
print_usage();
2011-09-26 13:40:07 +00:00
exit(EXIT_FAILURE);
}
2011-02-14 16:51:04 +00:00
if (options->recursive || options->from_stdin)
filecnt = 1024;
2011-02-02 08:01:05 +00:00
else
filecnt = options->filecnt;
files = ecalloc(filecnt, sizeof(*files));
fileidx = 0;
2011-02-14 16:51:04 +00:00
if (options->from_stdin) {
char *filename = NULL;
2015-10-28 20:50:17 +00:00
n = 0;
while (xgetline(&filename, &n))
add_entry(filename);
free(filename);
}
for (i = 0; i < options->filecnt; i++)
add_entry(options->filenames[i]);
if (fileidx == 0)
error(EXIT_FAILURE, 0, "No valid image file given, aborting");
2011-05-25 07:23:23 +00:00
filecnt = fileidx;
2011-06-28 11:45:57 +00:00
fileidx = options->startnum < filecnt ? options->startnum : 0;
2011-05-25 07:23:23 +00:00
if (options->background_cache && !options->private_mode) {
pid_t ppid = getpid(); /* to check if parent is still alive or not */
switch (fork()) {
case 0:
tns_init(&tns, files, &filecnt, &fileidx, NULL);
while (filecnt > 0 && getppid() == ppid) {
tns_load(&tns, filecnt - 1, false, true);
remove_file(filecnt - 1, true);
}
exit(0);
break;
case -1:
error(0, errno, "fork failed");
break;
}
}
win_init(&win);
2011-01-21 11:57:35 +00:00
img_init(&img, &win);
arl_init(&arl);
2011-01-17 15:41:50 +00:00
if ((homedir = getenv("XDG_CONFIG_HOME")) == NULL || homedir[0] == '\0') {
homedir = getenv("HOME");
dsuffix = "/.config";
}
if (homedir != NULL) {
extcmd_t *cmd[] = { &info.f, &info.ft, &keyhandler.f, &wintitle.f };
const char *name[] = { "image-info", "thumb-info", "key-handler", "win-title" };
const char *s = "/nsxiv/exec/";
for (i = 0; i < (int)ARRLEN(cmd); i++) {
n = strlen(homedir) + strlen(dsuffix) + strlen(s) + strlen(name[i]) + 1;
cmd[i]->cmd = emalloc(n);
snprintf(cmd[i]->cmd, n, "%s%s%s%s", homedir, dsuffix, s, name[i]);
if (access(cmd[i]->cmd, X_OK) != 0)
cmd[i]->err = errno;
}
} else {
error(0, 0, "Exec directory not found");
}
wintitle.fd = info.fd = -1;
2011-09-11 19:01:24 +00:00
if (options->thumb_mode) {
2011-08-19 11:09:22 +00:00
mode = MODE_THUMB;
tns_init(&tns, files, &filecnt, &fileidx, &win);
while (!tns_load(&tns, fileidx, false, false))
remove_file(fileidx, false);
2011-02-16 16:09:46 +00:00
} else {
2011-08-19 11:09:22 +00:00
mode = MODE_IMAGE;
tns.thumbs = NULL;
load_image(fileidx);
2011-02-16 16:09:46 +00:00
}
win_open(&win);
win_set_cursor(&win, CURSOR_WATCH);
2011-09-29 10:43:36 +00:00
atexit(cleanup);
set_timeout(redraw, 25, false);
run();
2011-01-17 15:41:50 +00:00
2011-01-17 13:57:59 +00:00
return 0;
}