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-rw-r--r--src/main.c692
1 files changed, 11 insertions, 681 deletions
diff --git a/src/main.c b/src/main.c
index 1e3df67..c2eb394 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2015 imv authors
+/* Copyright (c) 2017 imv authors
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
@@ -15,696 +15,26 @@ along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
-#include <limits.h>
-#include <stdio.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <unistd.h>
-#include <SDL2/SDL.h>
-#include <SDL2/SDL_ttf.h>
-#include <FreeImage.h>
-#include <getopt.h>
-#include <ctype.h>
-#include <poll.h>
-#include <errno.h>
-
-#include "loader.h"
-#include "texture.h"
-#include "navigator.h"
-#include "viewport.h"
-#include "util.h"
-
-enum scaling_mode {
- NONE,
- DOWN,
- FULL
-};
-
-static char *scaling_label[] = {
- "actual size",
- "best fit",
- "perfect fit"
-};
-
-struct {
- int fullscreen;
- int stdin_list;
- int recursive;
- int scaling;
- int nearest_neighbour;
- int solid_bg;
- int list;
- unsigned long delay;
- int cycle;
- unsigned char bg_r;
- unsigned char bg_g;
- unsigned char bg_b;
- int overlay;
- const char *start_at;
- const char *font;
-} g_options = {
- .fullscreen = 0,
- .stdin_list = 0,
- .recursive = 0,
- .scaling = FULL,
- .nearest_neighbour = 0,
- .solid_bg = 1,
- .list = 0,
- .delay = 0,
- .cycle = 1,
- .bg_r = 0,
- .bg_g = 0,
- .bg_b = 0,
- .overlay = 0,
- .start_at = NULL,
- .font = "Monospace:24",
-};
-
-static void print_usage(void)
-{
- fprintf(stdout,
- "imv %s\n"
- "See manual for usage information.\n"
- "\n"
- "Legal:\n"
- "This program is free software; you can redistribute it and/or\n"
- "modify it under the terms of the GNU General Public License\n"
- "as published by the Free Software Foundation; either version 2\n"
- "of the License, or (at your option) any later version.\n"
- "\n"
- "This software uses the FreeImage open source image library.\n"
- "See http://freeimage.sourceforge.net for details.\n"
- "FreeImage is used under the GNU GPLv2.\n"
- , IMV_VERSION);
-}
-
-static void parse_args(int argc, char** argv)
-{
- /* Do not print getopt errors */
- opterr = 0;
-
- char *argp, *ep = *argv;
- int o;
-
- while((o = getopt(argc, argv, "firasSudxhln:b:e:t:")) != -1) {
- switch(o) {
- case 'f': g_options.fullscreen = 1; break;
- case 'i':
- g_options.stdin_list = 1;
- fprintf(stderr, "Warning: '-i' is deprecated. No flag is needed.\n");
- break;
- case 'r': g_options.recursive = 1; break;
- case 'a': g_options.scaling = NONE; break;
- case 's': g_options.scaling = DOWN; break;
- case 'S': g_options.scaling = FULL; break;
- case 'u': g_options.nearest_neighbour = 1; break;
- case 'd': g_options.overlay = 1; break;
- case 'x': g_options.cycle = 0; break;
- case 'h': print_usage(); exit(0); break;
- case 'l': g_options.list = 1; break;
- case 'n':
- g_options.start_at = optarg;
- break;
- case 'b':
- if(strcmp("checks", optarg) == 0) {
- g_options.solid_bg = 0;
- } else {
- g_options.solid_bg = 1;
- argp = (*optarg == '#') ? optarg + 1 : optarg;
- uint32_t n = strtoul(argp, &ep, 16);
- if(*ep != '\0' || ep - argp != 6 || n > 0xFFFFFF) {
- fprintf(stderr, "Invalid hex color: '%s'\n", optarg);
- exit(1);
- }
- g_options.bg_b = n & 0xFF;
- g_options.bg_g = (n >> 8) & 0xFF;
- g_options.bg_r = (n >> 16);
- }
- break;
- case 'e':
- g_options.font = optarg;
- break;
- case 't':
- g_options.delay = strtoul(optarg, &argp, 10);
- g_options.delay *= 1000;
- if (*argp == '.') {
- long delay = strtoul(++argp, &ep, 10);
- for (int i = 3 - (ep - argp); i; i--) {
- delay *= 10;
- }
- if (delay < 1000) {
- g_options.delay += delay;
- } else {
- g_options.delay = ULONG_MAX;
- }
- }
- if (g_options.delay == ULONG_MAX) {
- fprintf(stderr, "Wrong slideshow delay '%s'. Aborting.\n", optarg);
- exit(1);
- }
- break;
- case '?':
- fprintf(stderr, "Unknown argument '%c'. Aborting.\n", optopt);
- exit(1);
- }
- }
-}
+#include "imv.h"
int main(int argc, char** argv)
{
- struct imv_navigator nav;
- imv_navigator_init(&nav);
-
- /* parse any command line options given */
- parse_args(argc, argv);
-
- argc -= optind;
- argv += optind;
+ struct imv *imv = imv_create();
- /* if no names are given, expect them on stdin */
- if(argc == 0) {
- g_options.stdin_list = 1;
+ if(!imv) {
+ return 1;
}
- /* if the user asked to load paths from stdin, set up poll(2)ing and read
- the first path */
- struct pollfd rfds[1];
- if(g_options.stdin_list) {
- rfds[0].fd = STDIN_FILENO;
- rfds[0].events = POLLIN;
- fprintf(stderr, "Reading paths from stdin...");
-
- char buf[PATH_MAX];
- char *stdin_ok;
- while((stdin_ok = fgets(buf, sizeof(buf), stdin)) != NULL) {
- size_t len = strlen(buf);
- if(buf[len-1] == '\n') {
- buf[--len] = 0;
- }
- if(len > 0) {
- if(imv_navigator_add(&nav, buf, g_options.recursive) != 0) {
- imv_navigator_destroy(&nav);
- exit(1);
- }
- break;
- }
- }
- if(!stdin_ok) {
- fprintf(stderr, " no input!\n");
- return -1;
- }
- fprintf(stderr, "\n");
- }
-
- void *stdin_buffer = NULL;
- size_t stdin_buffer_size = 0;
- int stdin_error = 0;
-
- /* handle any image paths given as arguments */
- for(int i = 0; i < argc; ++i) {
- /* special case: '-' is actually an option */
- if(!strcmp("-",argv[i])) {
- if (stdin_buffer) {
- fprintf(stderr, "Can't read from stdin twice\n");
- exit(1);
- }
- stdin_buffer_size = read_from_stdin(&stdin_buffer);
- if (stdin_buffer_size == 0) {
- perror(NULL);
- continue; /* we can't recover from the freed buffer, just ignore it */
- }
- stdin_error = errno;
- errno = 0; /* clear errno */
- }
- /* add the given path to the list to load */
- if(imv_navigator_add(&nav, argv[i], g_options.recursive) != 0) {
- imv_navigator_destroy(&nav);
- exit(1);
- }
- }
-
- /* if we weren't given any paths we have nothing to view. exit */
- if(!imv_navigator_selection(&nav)) {
- fprintf(stderr, "No input files. Exiting.\n");
- exit(1);
- }
-
- /* go to the chosen starting image if possible */
- if(g_options.start_at) {
- int start_index = imv_navigator_find_path(&nav, g_options.start_at);
- if(start_index < 0) {
- start_index = strtol(g_options.start_at,NULL,10) - 1;
- }
- imv_navigator_select_str(&nav, start_index);
- }
-
- /* we've got something to display, so create an SDL window */
- if(SDL_Init(SDL_INIT_VIDEO) != 0) {
- fprintf(stderr, "SDL Failed to Init: %s\n", SDL_GetError());
- exit(1);
- }
-
- /* width and height arbitrarily chosen. Perhaps there's a smarter way to
- * set this */
- const int width = 1280;
- const int height = 720;
-
- SDL_Window *window = SDL_CreateWindow(
- "imv",
- SDL_WINDOWPOS_CENTERED,
- SDL_WINDOWPOS_CENTERED,
- width, height,
- SDL_WINDOW_RESIZABLE);
- if(!window) {
- fprintf(stderr, "SDL Failed to create window: %s\n", SDL_GetError());
- SDL_Quit();
- exit(1);
- }
-
- /* we'll use SDL's built-in renderer, hardware accelerated if possible */
- SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, 0);
- if(!renderer) {
- fprintf(stderr, "SDL Failed to create renderer: %s\n", SDL_GetError());
- SDL_DestroyWindow(window);
- SDL_Quit();
- exit(1);
- }
-
- /* use the appropriate resampling method */
- SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY,
- g_options.nearest_neighbour ? "0" : "1");
-
- /* construct a chequered background texture */
- SDL_Texture *chequered_tex = NULL;
- if(!g_options.solid_bg) {
- chequered_tex = create_chequered(renderer);
- }
-
- /* set up the required fonts and surfaces for displaying the overlay */
- TTF_Init();
- TTF_Font *font = load_font(g_options.font);
- if(!font) {
- fprintf(stderr, "Error loading font: %s\n", TTF_GetError());
- }
-
- /* create our main classes on the stack*/
- struct imv_loader ldr;
- imv_init_loader(&ldr);
-
- struct imv_texture tex;
- imv_init_texture(&tex, renderer);
-
- struct imv_viewport view;
- imv_init_viewport(&view, window);
-
- /* put us in fullscren mode to begin with if requested */
- if(g_options.fullscreen) {
- imv_viewport_toggle_fullscreen(&view);
+ if(!imv_parse_args(imv, argc, argv)) {
+ imv_free(imv);
+ return 1;
}
- /* help keeping track of time */
- unsigned int last_time = SDL_GetTicks();
- unsigned int current_time;
-
- /* keep file change polling rate under control */
- static uint8_t poll_countdown = UINT8_MAX;
-
- /* do we need to redraw the window? */
- int need_redraw = 1;
- int need_rescale = 0;
-
- /* keep title buffer around for reuse */
- char title[256];
-
- /* used to calculate when to skip to the next image in slideshow mode */
- unsigned long delay_msec = 0;
-
- /* initialize variables holding image dimentions */
- int iw = 0, ih = 0;
-
- int quit = 0;
- while(!quit) {
- /* handle any input/window events sent by SDL */
- SDL_Event e;
- while(!quit && SDL_PollEvent(&e)) {
- switch(e.type) {
- case SDL_QUIT:
- quit = 1;
- break;
- case SDL_KEYDOWN:
- SDL_ShowCursor(SDL_DISABLE);
- switch (e.key.keysym.sym) {
- case SDLK_q:
- quit = 1;
- break;
- case SDLK_LEFTBRACKET:
- case SDLK_LEFT:
- imv_navigator_select_rel(&nav, -1);
- /* reset slideshow delay */
- delay_msec = 0;
- break;
- case SDLK_RIGHTBRACKET:
- case SDLK_RIGHT:
- imv_navigator_select_rel(&nav, 1);
- /* reset slideshow delay */
- delay_msec = 0;
- break;
- case SDLK_EQUALS:
- case SDLK_PLUS:
- case SDLK_i:
- case SDLK_UP:
- imv_viewport_zoom(&view, &tex, IMV_ZOOM_KEYBOARD, 1);
- break;
- case SDLK_MINUS:
- case SDLK_o:
- case SDLK_DOWN:
- imv_viewport_zoom(&view, &tex, IMV_ZOOM_KEYBOARD, -1);
- break;
- case SDLK_s:
- if(!e.key.repeat) {
- if((g_options.scaling += 1) > FULL) {
- g_options.scaling = NONE;
- }
- }
- /* FALLTHROUGH */
- case SDLK_r:
- if(!e.key.repeat) {
- need_rescale = 1;
- need_redraw = 1;
- }
- break;
- case SDLK_a:
- if(!e.key.repeat) {
- imv_viewport_scale_to_actual(&view, &tex);
- }
- break;
- case SDLK_c:
- if(!e.key.repeat) {
- imv_viewport_center(&view, &tex);
- }
- break;
- case SDLK_j:
- imv_viewport_move(&view, 0, -50);
- break;
- case SDLK_k:
- imv_viewport_move(&view, 0, 50);
- break;
- case SDLK_h:
- imv_viewport_move(&view, 50, 0);
- break;
- case SDLK_l:
- imv_viewport_move(&view, -50, 0);
- break;
- case SDLK_x:
- if(!e.key.repeat) {
- char* path = strdup(imv_navigator_selection(&nav));
- imv_navigator_remove(&nav, path);
-
- if (SDL_GetModState() & KMOD_SHIFT) {
- if (remove(path)) {
- fprintf(stderr, "Warning: can't remove %s from disk.\n", path);
- }
- }
-
- free(path);
-
- /* reset slideshow delay */
- delay_msec = 0;
- }
- break;
- case SDLK_f:
- if(!e.key.repeat) {
- imv_viewport_toggle_fullscreen(&view);
- }
- break;
- case SDLK_PERIOD:
- imv_loader_load_next_frame(&ldr);
- break;
- case SDLK_SPACE:
- if(!e.key.repeat) {
- imv_viewport_toggle_playing(&view);
- }
- break;
- case SDLK_p:
- if(!e.key.repeat) {
- puts(imv_navigator_selection(&nav));
- }
- break;
- case SDLK_d:
- if(!e.key.repeat) {
- g_options.overlay = !g_options.overlay;
- need_redraw = 1;
- }
- break;
- case SDLK_t:
- if(e.key.keysym.mod & (KMOD_SHIFT|KMOD_CAPS)) {
- if(g_options.delay >= 1000) {
- g_options.delay -= 1000;
- }
- } else {
- g_options.delay += 1000;
- }
- need_redraw = 1;
- break;
- }
- break;
- case SDL_MOUSEWHEEL:
- imv_viewport_zoom(&view, &tex, IMV_ZOOM_MOUSE, e.wheel.y);
- SDL_ShowCursor(SDL_ENABLE);
- break;
- case SDL_MOUSEMOTION:
- if(e.motion.state & SDL_BUTTON_LMASK) {
- imv_viewport_move(&view, e.motion.xrel, e.motion.yrel);
- }
- SDL_ShowCursor(SDL_ENABLE);
- break;
- case SDL_WINDOWEVENT:
- imv_viewport_update(&view, &tex);
- break;
- }
- }
-
- /* if we're quitting, don't bother drawing any more images */
- if(quit) {
- break;
- }
-
- /* check if an image failed to load, if so, remove it from our image list */
- char *err_path = imv_loader_get_error(&ldr);
- if(err_path) {
- imv_navigator_remove(&nav, err_path);
- if (strncmp(err_path, "-", 2) == 0) {
- free(stdin_buffer);
- stdin_buffer_size = 0;
- if (stdin_error != 0) {
- errno = stdin_error;
- perror("Failed to load image from standard input");
- errno = 0;
- }
- }
- free(err_path);
- }
-
- /* Check if navigator wrapped around paths lists */
- if(!g_options.cycle && imv_navigator_wrapped(&nav)) {
- break;
- }
-
- /* if the user has changed image, start loading the new one */
- if(imv_navigator_poll_changed(&nav, poll_countdown--)) {
- const char *current_path = imv_navigator_selection(&nav);
- if(!current_path) {
- if(g_options.stdin_list) {
- continue;
- }
- fprintf(stderr, "No input files left. Exiting.\n");
- exit(1);
- }
-
- snprintf(title, sizeof(title), "imv - [%i/%i] [LOADING] %s [%s]",
- nav.cur_path + 1, nav.num_paths, current_path,
- scaling_label[g_options.scaling]);
- imv_viewport_set_title(&view, title);
-
- imv_loader_load(&ldr, current_path, stdin_buffer, stdin_buffer_size);
- view.playing = 1;
- }
-
- /* get window height and width */
- int ww, wh;
- SDL_GetWindowSize(window, &ww, &wh);
-
- /* check if a new image is available to display */
- FIBITMAP *bmp;
- int is_new_image;
- if(imv_loader_get_image(&ldr, &bmp, &is_new_image)) {
- imv_texture_set_image(&tex, bmp);
- iw = FreeImage_GetWidth(bmp);
- ih = FreeImage_GetHeight(bmp);
- FreeImage_Unload(bmp);
- need_redraw = 1;
- need_rescale += is_new_image;
- }
-
- if(need_rescale) {
- need_rescale = 0;
- if(g_options.scaling == NONE ||
- (g_options.scaling == DOWN && ww > iw && wh > ih)) {
- imv_viewport_scale_to_actual(&view, &tex);
- } else {
- imv_viewport_scale_to_window(&view, &tex);
- }
- }
-
- current_time = SDL_GetTicks();
+ int ret = imv_run(imv);
- /* if we're playing an animated gif, tell the loader how much time has
- * passed */
- if(view.playing) {
- unsigned int dt = current_time - last_time;
- /* We cap the delta-time to 100 ms so that if imv is asleep for several
- * seconds or more (e.g. suspended), upon waking up it doesn't try to
- * catch up all the time it missed by playing through the gif quickly. */
- if(dt > 100) {
- dt = 100;
- }
- imv_loader_time_passed(&ldr, dt / 1000.0);
- }
+ imv_free(imv);
- /* handle slideshow */
- if(g_options.delay) {
- unsigned int dt = current_time - last_time;
-
- delay_msec += dt;
- need_redraw = 1;
- if(delay_msec >= g_options.delay) {
- imv_navigator_select_rel(&nav, 1);
- delay_msec = 0;
- }
- }
-
- last_time = current_time;
-
- /* check if the viewport needs a redraw */
- if(imv_viewport_needs_redraw(&view)) {
- need_redraw = 1;
- }
-
- /* only redraw when something's changed */
- if(need_redraw) {
- /* update window title */
- int len;
- const char *current_path = imv_navigator_selection(&nav);
- len = snprintf(title, sizeof(title), "imv - [%i/%i] [%ix%i] [%.2f%%] %s [%s]",
- nav.cur_path + 1, nav.num_paths, tex.width, tex.height,
- 100.0 * view.scale,
- current_path, scaling_label[g_options.scaling]);
- if(g_options.delay >= 1000) {
- len += snprintf(title + len, sizeof(title) - len, "[%lu/%lus]",
- delay_msec / 1000 + 1, g_options.delay / 1000);
- }
- imv_viewport_set_title(&view, title);
-
- /* first we draw the background */
- if(g_options.solid_bg) {
- /* solid background */
- SDL_SetRenderDrawColor(renderer,
- g_options.bg_r, g_options.bg_g, g_options.bg_b, 255);
- SDL_RenderClear(renderer);
- } else {
- /* chequered background */
- int img_w, img_h;
- SDL_QueryTexture(chequered_tex, NULL, NULL, &img_w, &img_h);
- /* tile the texture so it fills the window */
- for(int y = 0; y < wh; y += img_h) {
- for(int x = 0; x < ww; x += img_w) {
- SDL_Rect dst_rect = {x,y,img_w,img_h};
- SDL_RenderCopy(renderer, chequered_tex, NULL, &dst_rect);
- }
- }
- }
-
- /* draw our actual texture */
- imv_texture_draw(&tex, view.x, view.y, view.scale);
-
- /* if the overlay needs to be drawn, draw that too */
- if(g_options.overlay && font) {
- SDL_Color fg = {255,255,255,255};
- SDL_Color bg = {0,0,0,160};
- imv_printf(renderer, font, 0, 0, &fg, &bg, "%s",
- title + strlen("imv - "));
- }
-
- /* redraw complete, unset the flag */
- need_redraw = 0;
-
- /* reset poll countdown timer */
- poll_countdown = UINT8_MAX;
-
- /* tell SDL to show the newly drawn frame */
- SDL_RenderPresent(renderer);
- }
-
- /* sleep a little bit so we don't waste CPU time */
- if(g_options.stdin_list) {
- if(poll(rfds, 1, 10) != 1 || rfds[0].revents & (POLLERR|POLLNVAL)) {
- fprintf(stderr, "error polling stdin");
- return 1;
- }
- if(rfds[0].revents & (POLLIN|POLLHUP)) {
- char buf[PATH_MAX];
- if(fgets(buf, sizeof(buf), stdin) == NULL && ferror(stdin)) {
- clearerr(stdin);
- continue;
- }
- if(feof(stdin)) {
- g_options.stdin_list = 0;
- fprintf(stderr, "done with stdin\n");
- continue;
- }
-
- size_t len = strlen(buf);
- if(buf[len-1] == '\n') {
- buf[--len] = 0;
- }
- if(len > 0) {
- if(imv_navigator_add(&nav, buf, g_options.recursive)) {
- break;
- }
- need_redraw = 1;
- }
- }
- } else {
- SDL_Delay(10);
- }
- }
- while(g_options.list) {
- const char *path = imv_navigator_selection(&nav);
- if(!path) {
- break;
- }
- fprintf(stdout, "%s\n", path);
- imv_navigator_remove(&nav, path);
- }
- /* clean up our resources now that we're exiting */
- imv_destroy_loader(&ldr);
- imv_destroy_texture(&tex);
- imv_navigator_destroy(&nav);
- imv_destroy_viewport(&view);
-
- if(font) {
- TTF_CloseFont(font);
- }
- TTF_Quit();
- if(chequered_tex) {
- SDL_DestroyTexture(chequered_tex);
- }
- SDL_DestroyRenderer(renderer);
- SDL_DestroyWindow(window);
- SDL_Quit();
-
- return 0;
+ return ret;
}
-
/* vim:set ts=2 sts=2 sw=2 et: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-11 22:21:32 +0000