| 1 | /* sxiv: commands.c |
| 2 | * Copyright (c) 2011 Bert Muennich <muennich at informatik.hu-berlin.de> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version 2 |
| 7 | * of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301, USA. |
| 17 | */ |
| 18 | |
| 19 | #include <stdlib.h> |
| 20 | #include <string.h> |
| 21 | #include <unistd.h> |
| 22 | #include <sys/wait.h> |
| 23 | |
| 24 | #include "commands.h" |
| 25 | #include "image.h" |
| 26 | #include "thumbs.h" |
| 27 | #include "types.h" |
| 28 | #include "util.h" |
| 29 | |
| 30 | void cleanup(); |
| 31 | void remove_file(int, unsigned char); |
| 32 | void load_image(int); |
| 33 | |
| 34 | extern appmode_t mode; |
| 35 | extern img_t img; |
| 36 | extern tns_t tns; |
| 37 | extern win_t win; |
| 38 | |
| 39 | extern fileinfo_t *files; |
| 40 | extern int filecnt, fileidx; |
| 41 | |
| 42 | extern int timo_cursor; |
| 43 | extern int timo_redraw; |
| 44 | |
| 45 | int it_quit(arg_t a) { |
| 46 | cleanup(); |
| 47 | exit(0); |
| 48 | } |
| 49 | |
| 50 | int it_switch_mode(arg_t a) { |
| 51 | if (mode == MODE_IMAGE) { |
| 52 | if (!tns.thumbs) |
| 53 | tns_init(&tns, filecnt); |
| 54 | img_close(&img, 0); |
| 55 | win_set_cursor(&win, CURSOR_ARROW); |
| 56 | timo_cursor = 0; |
| 57 | tns.sel = fileidx; |
| 58 | tns.dirty = 1; |
| 59 | mode = MODE_THUMB; |
| 60 | } else { |
| 61 | timo_cursor = TO_CURSOR_HIDE; |
| 62 | load_image(tns.sel); |
| 63 | mode = MODE_IMAGE; |
| 64 | } |
| 65 | return 1; |
| 66 | } |
| 67 | |
| 68 | int it_toggle_fullscreen(arg_t a) { |
| 69 | win_toggle_fullscreen(&win); |
| 70 | if (mode == MODE_IMAGE) |
| 71 | img.checkpan = 1; |
| 72 | else |
| 73 | tns.dirty = 1; |
| 74 | timo_redraw = TO_WIN_RESIZE; |
| 75 | return 0; |
| 76 | } |
| 77 | |
| 78 | int it_reload_image(arg_t a) { |
| 79 | if (mode == MODE_IMAGE) { |
| 80 | load_image(fileidx); |
| 81 | } else if (!tns_load(&tns, tns.sel, &files[tns.sel], True, False)) { |
| 82 | remove_file(tns.sel, 0); |
| 83 | tns.dirty = 1; |
| 84 | if (tns.sel >= tns.cnt) |
| 85 | tns.sel = tns.cnt - 1; |
| 86 | } |
| 87 | return 1; |
| 88 | } |
| 89 | |
| 90 | int it_remove_image(arg_t a) { |
| 91 | if (mode == MODE_IMAGE) { |
| 92 | remove_file(fileidx, 1); |
| 93 | load_image(fileidx >= filecnt ? filecnt - 1 : fileidx); |
| 94 | return 1; |
| 95 | } else if (tns.sel < tns.cnt) { |
| 96 | remove_file(tns.sel, 1); |
| 97 | tns.dirty = 1; |
| 98 | if (tns.sel >= tns.cnt) |
| 99 | tns.sel = tns.cnt - 1; |
| 100 | return 1; |
| 101 | } else { |
| 102 | return 0; |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | int i_navigate(arg_t a) { |
| 107 | int n = (int) a; |
| 108 | |
| 109 | if (mode == MODE_IMAGE) { |
| 110 | n += fileidx; |
| 111 | if (n < 0) |
| 112 | n = 0; |
| 113 | if (n >= filecnt) |
| 114 | n = filecnt - 1; |
| 115 | |
| 116 | if (n != fileidx) { |
| 117 | load_image(n); |
| 118 | return 1; |
| 119 | } |
| 120 | } |
| 121 | return 0; |
| 122 | } |
| 123 | |
| 124 | int it_first(arg_t a) { |
| 125 | if (mode == MODE_IMAGE && fileidx != 0) { |
| 126 | load_image(0); |
| 127 | return 1; |
| 128 | } else if (mode == MODE_THUMB && tns.sel != 0) { |
| 129 | tns.sel = 0; |
| 130 | tns.dirty = 1; |
| 131 | return 1; |
| 132 | } else { |
| 133 | return 0; |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | int it_last(arg_t a) { |
| 138 | if (mode == MODE_IMAGE && fileidx != filecnt - 1) { |
| 139 | load_image(filecnt - 1); |
| 140 | return 1; |
| 141 | } else if (mode == MODE_THUMB && tns.sel != tns.cnt - 1) { |
| 142 | tns.sel = tns.cnt - 1; |
| 143 | tns.dirty = 1; |
| 144 | return 1; |
| 145 | } else { |
| 146 | return 0; |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | int i_navigate_frame(arg_t a) { |
| 151 | return img_change_frame(&img, (int) a); |
| 152 | } |
| 153 | |
| 154 | int it_move(arg_t a) { |
| 155 | direction_t dir = (direction_t) a; |
| 156 | |
| 157 | if (mode == MODE_IMAGE) |
| 158 | return img_pan(&img, &win, dir, 0); |
| 159 | else |
| 160 | return tns_move_selection(&tns, &win, dir); |
| 161 | } |
| 162 | |
| 163 | int i_pan_screen(arg_t a) { |
| 164 | direction_t dir = (direction_t) a; |
| 165 | |
| 166 | if (mode == MODE_IMAGE) |
| 167 | return img_pan(&img, &win, dir, 1); |
| 168 | else |
| 169 | return 0; |
| 170 | } |
| 171 | |
| 172 | int i_pan_edge(arg_t a) { |
| 173 | direction_t dir = (direction_t) a; |
| 174 | |
| 175 | if (mode == MODE_IMAGE) |
| 176 | return img_pan_edge(&img, &win, dir); |
| 177 | else |
| 178 | return 0; |
| 179 | } |
| 180 | |
| 181 | /* Xlib helper function for i_drag() */ |
| 182 | Bool is_motionnotify(Display *d, XEvent *e, XPointer a) { |
| 183 | return e != NULL && e->type == MotionNotify; |
| 184 | } |
| 185 | |
| 186 | int i_drag(arg_t a) { |
| 187 | int dx = 0, dy = 0, i, ox, oy, x, y; |
| 188 | unsigned int ui; |
| 189 | Bool dragging = True, next = False; |
| 190 | XEvent e; |
| 191 | Window w; |
| 192 | |
| 193 | if (mode != MODE_IMAGE) |
| 194 | return 0; |
| 195 | if (!XQueryPointer(win.env.dpy, win.xwin, &w, &w, &i, &i, &ox, &oy, &ui)) |
| 196 | return 0; |
| 197 | |
| 198 | win_set_cursor(&win, CURSOR_HAND); |
| 199 | |
| 200 | while (dragging) { |
| 201 | if (!next) |
| 202 | XMaskEvent(win.env.dpy, |
| 203 | ButtonPressMask | ButtonReleaseMask | PointerMotionMask, &e); |
| 204 | switch (e.type) { |
| 205 | case ButtonPress: |
| 206 | case ButtonRelease: |
| 207 | dragging = False; |
| 208 | break; |
| 209 | case MotionNotify: |
| 210 | x = e.xmotion.x; |
| 211 | y = e.xmotion.y; |
| 212 | if (x >= 0 && x <= win.w && y >= 0 && y <= win.h) { |
| 213 | dx += x - ox; |
| 214 | dy += y - oy; |
| 215 | } |
| 216 | ox = x; |
| 217 | oy = y; |
| 218 | break; |
| 219 | } |
| 220 | if (dragging) |
| 221 | next = XCheckIfEvent(win.env.dpy, &e, is_motionnotify, None); |
| 222 | if ((!dragging || !next) && (dx != 0 || dy != 0)) { |
| 223 | if (img_move(&img, &win, dx, dy)) |
| 224 | img_render(&img, &win); |
| 225 | dx = dy = 0; |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | win_set_cursor(&win, CURSOR_ARROW); |
| 230 | timo_cursor = TO_CURSOR_HIDE; |
| 231 | timo_redraw = 0; |
| 232 | |
| 233 | return 0; |
| 234 | } |
| 235 | |
| 236 | int i_zoom(arg_t a) { |
| 237 | int scale = (int) a; |
| 238 | |
| 239 | if (mode != MODE_IMAGE) |
| 240 | return 0; |
| 241 | if (scale > 0) |
| 242 | return img_zoom_in(&img, &win); |
| 243 | else if (scale < 0) |
| 244 | return img_zoom_out(&img, &win); |
| 245 | else |
| 246 | return img_zoom(&img, &win, 1.0); |
| 247 | } |
| 248 | |
| 249 | int i_fit_to_win(arg_t a) { |
| 250 | int ret; |
| 251 | |
| 252 | if (mode == MODE_IMAGE) { |
| 253 | if ((ret = img_fit_win(&img, &win))) |
| 254 | img_center(&img, &win); |
| 255 | return ret; |
| 256 | } else { |
| 257 | return 0; |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | int i_fit_to_img(arg_t a) { |
| 262 | int ret, x, y; |
| 263 | unsigned int w, h; |
| 264 | |
| 265 | if (mode == MODE_IMAGE) { |
| 266 | x = MAX(0, win.x + img.x); |
| 267 | y = MAX(0, win.y + img.y); |
| 268 | w = img.w * img.zoom; |
| 269 | h = img.h * img.zoom; |
| 270 | if ((ret = win_moveresize(&win, x, y, w, h))) { |
| 271 | img.x = x - win.x; |
| 272 | img.y = y - win.y; |
| 273 | } |
| 274 | return ret; |
| 275 | } else { |
| 276 | return 0; |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | int i_rotate(arg_t a) { |
| 281 | direction_t dir = (direction_t) a; |
| 282 | |
| 283 | if (mode == MODE_IMAGE) { |
| 284 | if (dir == DIR_LEFT) { |
| 285 | img_rotate_left(&img, &win); |
| 286 | return 1; |
| 287 | } else if (dir == DIR_RIGHT) { |
| 288 | img_rotate_right(&img, &win); |
| 289 | return 1; |
| 290 | } |
| 291 | } |
| 292 | return 0; |
| 293 | } |
| 294 | |
| 295 | int i_toggle_antialias(arg_t a) { |
| 296 | if (mode == MODE_IMAGE) { |
| 297 | img_toggle_antialias(&img); |
| 298 | return 1; |
| 299 | } else { |
| 300 | return 0; |
| 301 | } |
| 302 | } |
| 303 | |
| 304 | int i_toggle_alpha(arg_t a) { |
| 305 | if (mode == MODE_IMAGE) { |
| 306 | img.alpha ^= 1; |
| 307 | return 1; |
| 308 | } else { |
| 309 | return 0; |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | int it_open_with(arg_t a) { |
| 314 | const char *prog = (const char*) a; |
| 315 | pid_t pid; |
| 316 | |
| 317 | if (!prog || !*prog) |
| 318 | return 0; |
| 319 | |
| 320 | if((pid = fork()) == 0) { |
| 321 | execlp(prog, prog, |
| 322 | files[mode == MODE_IMAGE ? fileidx : tns.sel].path, NULL); |
| 323 | warn("could not exec: %s", prog); |
| 324 | exit(1); |
| 325 | } else if (pid < 0) { |
| 326 | warn("could not for. program was: %s", prog); |
| 327 | } |
| 328 | |
| 329 | return 0; |
| 330 | } |
| 331 | |
| 332 | int it_shell_cmd(arg_t a) { |
| 333 | const char *cline = (const char*) a; |
| 334 | char *cn, *cmdline; |
| 335 | const char *co, *fpath; |
| 336 | int fpcnt, fplen, status; |
| 337 | pid_t pid; |
| 338 | |
| 339 | if (!cline || !*cline) |
| 340 | return 0; |
| 341 | |
| 342 | /* build command line: */ |
| 343 | fpcnt = 0; |
| 344 | co = cline - 1; |
| 345 | while ((co = strchr(co + 1, '#'))) |
| 346 | fpcnt++; |
| 347 | if (!fpcnt) |
| 348 | return 0; |
| 349 | fpath = files[mode == MODE_IMAGE ? fileidx : tns.sel].path; |
| 350 | fplen = strlen(fpath); |
| 351 | cn = cmdline = (char*) s_malloc((strlen(cline) + fpcnt * (fplen + 2)) * |
| 352 | sizeof(char)); |
| 353 | /* replace all '#' with filename: */ |
| 354 | for (co = cline; *co; co++) { |
| 355 | if (*co == '#') { |
| 356 | *cn++ = '"'; |
| 357 | strcpy(cn, fpath); |
| 358 | cn += fplen; |
| 359 | *cn++ = '"'; |
| 360 | } else { |
| 361 | *cn++ = *co; |
| 362 | } |
| 363 | } |
| 364 | *cn = '\0'; |
| 365 | |
| 366 | win_set_cursor(&win, CURSOR_WATCH); |
| 367 | |
| 368 | if ((pid = fork()) == 0) { |
| 369 | execl("/bin/sh", "/bin/sh", "-c", cmdline, NULL); |
| 370 | warn("could not exec: /bin/sh"); |
| 371 | exit(1); |
| 372 | } else if (pid < 0) { |
| 373 | warn("could not fork. command line was: %s", cmdline); |
| 374 | goto end; |
| 375 | } |
| 376 | |
| 377 | waitpid(pid, &status, 0); |
| 378 | if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) |
| 379 | warn("child exited with non-zero return value: %d. command line was: %s", |
| 380 | WEXITSTATUS(status), cmdline); |
| 381 | |
| 382 | if (mode == MODE_IMAGE) { |
| 383 | if (fileidx < tns.cnt) |
| 384 | tns_load(&tns, fileidx, &files[fileidx], False, True); |
| 385 | img_close(&img, 1); |
| 386 | load_image(fileidx); |
| 387 | } else { |
| 388 | if (!tns_load(&tns, tns.sel, &files[tns.sel], True, False)) { |
| 389 | remove_file(tns.sel, 0); |
| 390 | tns.dirty = 1; |
| 391 | if (tns.sel >= tns.cnt) |
| 392 | tns.sel = tns.cnt - 1; |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | end: |
| 397 | if (mode == MODE_THUMB) |
| 398 | win_set_cursor(&win, CURSOR_ARROW); |
| 399 | /* else: cursor gets reset in redraw() */ |
| 400 | |
| 401 | free(cmdline); |
| 402 | |
| 403 | return 1; |
| 404 | } |