671 lines
14 KiB
C
671 lines
14 KiB
C
/* Copyright 2011-2013 Bert Muennich
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*
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* This file is part of sxiv.
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*
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* sxiv 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
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* by the Free Software Foundation; either version 2 of the License,
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* or (at your option) any later version.
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*
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* sxiv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with sxiv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define _POSIX_C_SOURCE 200112L
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#define _MAPPINGS_CONFIG
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/select.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <X11/keysym.h>
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#include "types.h"
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#include "commands.h"
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#include "image.h"
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#include "options.h"
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#include "thumbs.h"
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#include "util.h"
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#include "window.h"
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#include "config.h"
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enum {
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BAR_L_LEN = 512,
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BAR_R_LEN = 64,
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FILENAME_CNT = 1024,
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TITLE_LEN = 256
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};
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typedef struct {
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struct timeval when;
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bool active;
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timeout_f handler;
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} timeout_t;
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/* timeout handler functions: */
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void redraw(void);
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void reset_cursor(void);
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void animate(void);
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void clear_resize(void);
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appmode_t mode;
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img_t img;
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tns_t tns;
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win_t win;
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fileinfo_t *files;
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int filecnt, fileidx;
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int alternate;
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int prefix;
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bool resized = false;
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const char * const INFO_SCRIPT = ".sxiv/exec/image-info";
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char *info_script;
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struct {
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char l[BAR_L_LEN];
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char r[BAR_R_LEN];
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} bar;
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timeout_t timeouts[] = {
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{ { 0, 0 }, false, redraw },
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{ { 0, 0 }, false, reset_cursor },
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{ { 0, 0 }, false, animate },
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{ { 0, 0 }, false, clear_resize },
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};
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void cleanup(void)
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{
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static bool in = false;
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if (!in) {
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in = true;
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img_close(&img, false);
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tns_free(&tns);
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win_close(&win);
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}
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}
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void check_add_file(char *filename)
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{
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const char *bn;
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if (filename == NULL || *filename == '\0')
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return;
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if (access(filename, R_OK) < 0) {
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warn("could not open file: %s", filename);
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return;
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}
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if (fileidx == filecnt) {
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filecnt *= 2;
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files = (fileinfo_t*) s_realloc(files, filecnt * sizeof(fileinfo_t));
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}
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if (*filename != '/') {
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files[fileidx].path = absolute_path(filename);
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if (files[fileidx].path == NULL) {
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warn("could not get absolute path of file: %s\n", filename);
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return;
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}
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}
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files[fileidx].loaded = false;
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files[fileidx].name = s_strdup(filename);
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if (*filename == '/')
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files[fileidx].path = files[fileidx].name;
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if ((bn = strrchr(files[fileidx].name , '/')) != NULL && bn[1] != '\0')
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files[fileidx].base = ++bn;
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else
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files[fileidx].base = files[fileidx].name;
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fileidx++;
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}
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void remove_file(int n, bool manual)
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{
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if (n < 0 || n >= filecnt)
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return;
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if (filecnt == 1) {
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if (!manual)
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fprintf(stderr, "sxiv: no more files to display, aborting\n");
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cleanup();
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exit(manual ? EXIT_SUCCESS : EXIT_FAILURE);
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}
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if (files[n].path != files[n].name)
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free((void*) files[n].path);
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free((void*) files[n].name);
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if (n + 1 < filecnt)
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memmove(files + n, files + n + 1, (filecnt - n - 1) * sizeof(fileinfo_t));
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if (n + 1 < tns.cnt) {
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memmove(tns.thumbs + n, tns.thumbs + n + 1, (tns.cnt - n - 1) *
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sizeof(thumb_t));
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memset(tns.thumbs + tns.cnt - 1, 0, sizeof(thumb_t));
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}
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filecnt--;
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if (n < tns.cnt)
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tns.cnt--;
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}
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void set_timeout(timeout_f handler, int time, bool overwrite)
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{
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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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if (!timeouts[i].active || overwrite) {
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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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}
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return;
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}
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}
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}
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void reset_timeout(timeout_f handler)
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{
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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;
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}
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}
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}
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bool check_timeouts(struct timeval *t)
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{
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int i = 0, tdiff, tmin = -1;
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struct timeval now;
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while (i < 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) {
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tmin = tdiff;
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}
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}
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i++;
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}
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if (tmin > 0 && t != NULL)
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TV_SET_MSEC(t, tmin);
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return tmin > 0;
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}
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void read_info(void)
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{
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char cmd[4096];
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FILE *outp;
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int c, i = 0, n = sizeof(bar.l) - 1;
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bool lastsep = false;
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if (info_script != NULL) {
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snprintf(cmd, sizeof(cmd), "%s \"%s\"", info_script, files[fileidx].name);
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outp = popen(cmd, "r");
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if (outp == NULL)
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goto end;
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while (i < n && (c = fgetc(outp)) != EOF) {
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if (c == '\n') {
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if (!lastsep) {
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bar.l[i++] = ' ';
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lastsep = true;
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}
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} else {
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bar.l[i++] = c;
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lastsep = false;
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}
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}
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pclose(outp);
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}
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end:
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if (lastsep)
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i--;
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bar.l[i] = '\0';
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}
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void load_image(int new)
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{
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if (new < 0 || new >= filecnt)
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return;
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win_set_cursor(&win, CURSOR_WATCH);
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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);
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if (new >= filecnt)
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new = filecnt - 1;
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}
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files[new].loaded = true;
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alternate = fileidx;
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fileidx = new;
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read_info();
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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);
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else
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reset_timeout(animate);
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}
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void update_info(void)
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{
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unsigned int i, fn, fw, n, len = sizeof(bar.r);
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int sel;
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char *t = bar.r, title[TITLE_LEN];
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bool ow_info;
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for (fw = 0, i = filecnt; i > 0; fw++, i /= 10);
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sel = mode == MODE_IMAGE ? fileidx : tns.sel;
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if (mode == MODE_THUMB) {
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win_set_title(&win, "sxiv");
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if (tns.cnt == filecnt) {
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n = snprintf(t, len, "%0*d/%d", fw, sel + 1, filecnt);
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ow_info = true;
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} else {
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snprintf(bar.l, sizeof(bar.l), "Loading... %0*d/%d",
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fw, tns.cnt, filecnt);
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bar.r[0] = '\0';
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ow_info = false;
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}
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} else {
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snprintf(title, sizeof(title), "sxiv - %s", files[sel].name);
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win_set_title(&win, title);
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n = snprintf(t, len, "%3d%% ", (int) (img.zoom * 100.0));
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if (img.multi.cnt > 0) {
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for (fn = 0, i = img.multi.cnt; i > 0; fn++, i /= 10);
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n += snprintf(t + n, len - n, "(%0*d/%d) ",
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fn, img.multi.sel + 1, img.multi.cnt);
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}
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n += snprintf(t + n, len - n, "%0*d/%d", fw, sel + 1, filecnt);
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ow_info = bar.l[0] == '\0';
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}
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if (ow_info) {
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fn = strlen(files[sel].name);
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if (fn < sizeof(bar.l) &&
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win_textwidth(files[sel].name, fn, true) +
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win_textwidth(bar.r, n, true) < win.w)
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{
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strncpy(bar.l, files[sel].name, sizeof(bar.l));
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} else {
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strncpy(bar.l, files[sel].base, sizeof(bar.l));
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}
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}
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win_set_bar_info(&win, bar.l, bar.r);
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}
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void redraw(void)
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{
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if (mode == MODE_IMAGE)
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img_render(&img);
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else
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tns_render(&tns);
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update_info();
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win_draw(&win);
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reset_timeout(redraw);
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reset_cursor();
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}
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void reset_cursor(void)
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{
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int i;
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cursor_t cursor = CURSOR_NONE;
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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) {
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if (timeouts[i].active)
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cursor = CURSOR_ARROW;
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break;
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}
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}
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} else {
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if (tns.cnt != filecnt)
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cursor = CURSOR_WATCH;
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else
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cursor = CURSOR_ARROW;
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}
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win_set_cursor(&win, cursor);
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}
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void animate(void)
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{
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if (img_frame_animate(&img, false)) {
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redraw();
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set_timeout(animate, img.multi.frames[img.multi.sel].delay, true);
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}
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}
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void clear_resize(void)
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{
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resized = false;
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}
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bool keymask(const keymap_t *k, unsigned int state)
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{
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return (k->ctrl ? ControlMask : 0) == (state & ControlMask);
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}
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bool buttonmask(const button_t *b, unsigned int state)
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{
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return ((b->ctrl ? ControlMask : 0) | (b->shift ? ShiftMask : 0)) ==
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(state & (ControlMask | ShiftMask));
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}
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void on_keypress(XKeyEvent *kev)
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{
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int i;
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KeySym ksym;
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char key;
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if (kev == NULL)
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return;
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XLookupString(kev, &key, 1, &ksym, NULL);
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if ((ksym == XK_Escape || (key >= '0' && key <= '9')) &&
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(kev->state & ControlMask) == 0)
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{
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/* number prefix for commands */
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prefix = ksym == XK_Escape ? 0 : prefix * 10 + (int) (key - '0');
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return;
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}
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for (i = 0; i < ARRLEN(keys); i++) {
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if (keys[i].ksym == ksym && keymask(&keys[i], kev->state)) {
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if (keys[i].cmd != NULL && keys[i].cmd(keys[i].arg))
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redraw();
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prefix = 0;
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return;
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}
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}
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}
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void on_buttonpress(XButtonEvent *bev)
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{
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int i, sel;
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if (bev == NULL)
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return;
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if (mode == MODE_IMAGE) {
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win_set_cursor(&win, CURSOR_ARROW);
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set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
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for (i = 0; i < ARRLEN(buttons); i++) {
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if (buttons[i].button == bev->button &&
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buttonmask(&buttons[i], bev->state))
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{
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if (buttons[i].cmd != NULL && buttons[i].cmd(buttons[i].arg))
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redraw();
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return;
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}
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}
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} else {
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/* thumbnail mode (hard-coded) */
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switch (bev->button) {
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case Button1:
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if ((sel = tns_translate(&tns, bev->x, bev->y)) >= 0) {
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if (sel == tns.sel) {
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mode = MODE_IMAGE;
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set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
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load_image(tns.sel);
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} else {
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tns_highlight(&tns, tns.sel, false);
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tns_highlight(&tns, sel, true);
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tns.sel = sel;
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}
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redraw();
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break;
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}
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break;
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case Button4:
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case Button5:
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if (tns_scroll(&tns, bev->button == Button4 ? DIR_UP : DIR_DOWN,
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(bev->state & ControlMask) != 0))
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redraw();
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break;
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}
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}
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}
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void run(void)
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{
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int xfd;
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fd_set fds;
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struct timeval timeout;
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XEvent ev, nextev;
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bool discard;
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redraw();
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while (true) {
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while (mode == MODE_THUMB && tns.cnt < filecnt &&
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XPending(win.env.dpy) == 0)
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{
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/* load thumbnails */
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set_timeout(redraw, TO_REDRAW_THUMBS, false);
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if (tns_load(&tns, tns.cnt, &files[tns.cnt], false, false)) {
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tns.cnt++;
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} else {
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remove_file(tns.cnt, false);
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if (tns.sel >= tns.cnt)
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tns.sel--;
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}
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if (tns.cnt == filecnt)
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redraw();
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else
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check_timeouts(NULL);
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}
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while (XPending(win.env.dpy) == 0 && check_timeouts(&timeout)) {
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/* wait for timeouts */
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xfd = ConnectionNumber(win.env.dpy);
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FD_ZERO(&fds);
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FD_SET(xfd, &fds);
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select(xfd + 1, &fds, 0, 0, &timeout);
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}
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do {
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XNextEvent(win.env.dpy, &ev);
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discard = false;
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if (XEventsQueued(win.env.dpy, QueuedAlready) > 0) {
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XPeekEvent(win.env.dpy, &nextev);
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switch (ev.type) {
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case ConfigureNotify:
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discard = ev.type == nextev.type;
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break;
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case KeyPress:
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discard = (nextev.type == KeyPress || nextev.type == KeyRelease)
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&& ev.xkey.keycode == nextev.xkey.keycode;
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break;
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}
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}
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} while (discard);
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switch (ev.type) {
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/* handle events */
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case ButtonPress:
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on_buttonpress(&ev.xbutton);
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break;
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case ClientMessage:
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if ((Atom) ev.xclient.data.l[0] == wm_delete_win)
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return;
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break;
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case ConfigureNotify:
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if (win_configure(&win, &ev.xconfigure)) {
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if (mode == MODE_IMAGE) {
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img.dirty = true;
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img.checkpan = true;
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} else {
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tns.dirty = true;
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}
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if (!resized || win.fullscreen) {
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redraw();
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set_timeout(clear_resize, TO_REDRAW_RESIZE, false);
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resized = true;
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} else {
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set_timeout(redraw, TO_REDRAW_RESIZE, false);
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}
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}
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break;
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case Expose:
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win_expose(&win, &ev.xexpose);
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break;
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case KeyPress:
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on_keypress(&ev.xkey);
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break;
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case MotionNotify:
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if (mode == MODE_IMAGE) {
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win_set_cursor(&win, CURSOR_ARROW);
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set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
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}
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break;
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}
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}
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}
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int fncmp(const void *a, const void *b)
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{
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return strcoll(((fileinfo_t*) a)->name, ((fileinfo_t*) b)->name);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int i, start;
|
|
size_t n;
|
|
ssize_t len;
|
|
char *filename;
|
|
const char *homedir;
|
|
struct stat fstats;
|
|
r_dir_t dir;
|
|
|
|
parse_options(argc, argv);
|
|
|
|
if (options->clean_cache) {
|
|
tns_init(&tns, 0, NULL);
|
|
tns_clean_cache(&tns);
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
|
|
if (options->filecnt == 0) {
|
|
print_usage();
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (options->recursive || options->from_stdin)
|
|
filecnt = FILENAME_CNT;
|
|
else
|
|
filecnt = options->filecnt;
|
|
|
|
files = (fileinfo_t*) s_malloc(filecnt * sizeof(fileinfo_t));
|
|
fileidx = 0;
|
|
|
|
/* build file list: */
|
|
if (options->from_stdin) {
|
|
filename = NULL;
|
|
while ((len = get_line(&filename, &n, stdin)) > 0) {
|
|
if (filename[len-1] == '\n')
|
|
filename[len-1] = '\0';
|
|
check_add_file(filename);
|
|
}
|
|
if (filename != NULL)
|
|
free(filename);
|
|
} else {
|
|
for (i = 0; i < options->filecnt; i++) {
|
|
filename = options->filenames[i];
|
|
|
|
if (stat(filename, &fstats) < 0) {
|
|
warn("could not stat file: %s", filename);
|
|
continue;
|
|
}
|
|
if (!S_ISDIR(fstats.st_mode)) {
|
|
check_add_file(filename);
|
|
} else {
|
|
if (!options->recursive) {
|
|
warn("ignoring directory: %s", filename);
|
|
continue;
|
|
}
|
|
if (r_opendir(&dir, filename) < 0) {
|
|
warn("could not open directory: %s", filename);
|
|
continue;
|
|
}
|
|
start = fileidx;
|
|
while ((filename = r_readdir(&dir)) != NULL) {
|
|
check_add_file(filename);
|
|
free((void*) filename);
|
|
}
|
|
r_closedir(&dir);
|
|
if (fileidx - start > 1)
|
|
qsort(files + start, fileidx - start, sizeof(fileinfo_t), fncmp);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (fileidx == 0) {
|
|
fprintf(stderr, "sxiv: no valid image file given, aborting\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
filecnt = fileidx;
|
|
fileidx = options->startnum < filecnt ? options->startnum : 0;
|
|
|
|
win_init(&win);
|
|
img_init(&img, &win);
|
|
|
|
if ((homedir = getenv("HOME")) == NULL) {
|
|
warn("could not locate home directory");
|
|
} else {
|
|
len = strlen(homedir) + strlen(INFO_SCRIPT) + 2;
|
|
info_script = (char*) s_malloc(len);
|
|
snprintf(info_script, len, "%s/%s", homedir, INFO_SCRIPT);
|
|
if (access(info_script, X_OK) != 0) {
|
|
free(info_script);
|
|
info_script = NULL;
|
|
}
|
|
}
|
|
|
|
if (options->thumb_mode) {
|
|
mode = MODE_THUMB;
|
|
tns_init(&tns, filecnt, &win);
|
|
while (!tns_load(&tns, 0, &files[0], false, false))
|
|
remove_file(0, false);
|
|
tns.cnt = 1;
|
|
} else {
|
|
mode = MODE_IMAGE;
|
|
tns.thumbs = NULL;
|
|
load_image(fileidx);
|
|
}
|
|
|
|
win_open(&win);
|
|
|
|
run();
|
|
cleanup();
|
|
|
|
return 0;
|
|
}
|