163 lines
3.3 KiB
C
163 lines
3.3 KiB
C
void
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createifnexist(const char *dir)
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{
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if(access(dir, F_OK) == 0)
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return;
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if(errno == EACCES)
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fprintf(stderr, "spmenu: no access to create directory: %s\n", dir);
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if(mkdir(dir, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH) == -1)
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fprintf(stderr, "spmenu: failed to create directory: %s\n", dir);
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}
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void
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createifnexist_rec(const char *dir)
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{
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char *buf, *s = (char*)dir, *bs;
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if(!(buf = malloc(strlen(s)+1)))
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return;
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memset(buf, 0, strlen(s)+1);
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for(bs = buf; *s; ++s, ++bs) {
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if(*s == '/' && *buf)
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createifnexist(buf);
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*bs = *s;
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}
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free(buf);
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}
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void
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loadimage(const char *file, int *width, int *height)
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{
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image = imlib_load_image(file);
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if (!image)
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return;
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imlib_context_set_image(image);
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*width = imlib_image_get_width();
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*height = imlib_image_get_height();
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}
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void
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scaleimage(int width, int height)
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{
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int nwidth, nheight;
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float aspect = 1.0f;
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if (width > height)
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aspect = (float)imagesize/width;
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else
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aspect = (float)imagesize/height;
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nwidth = width * aspect;
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nheight = height * aspect;
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if(nwidth == width && nheight == height)
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return;
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image = imlib_create_cropped_scaled_image(0,0,width,height,nwidth,nheight);
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imlib_free_image();
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if (!image)
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return;
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imlib_context_set_image(image);
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}
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void
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loadimagecache(const char *file, int *width, int *height)
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{
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int slen = 0, i;
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unsigned char digest[MD5_DIGEST_LENGTH];
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char md5[MD5_DIGEST_LENGTH*2+1];
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char *xdg_cache, *home = NULL, *dsize, *buf;
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struct passwd *pw = NULL;
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/* just load and don't store or try cache */
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if(imagesize > 256) {
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loadimage(file, width, height);
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return;
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}
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/* try find image from cache first */
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if(!(xdg_cache = getenv("XDG_CACHE_HOME"))) {
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if(!(home = getenv("HOME")) && (pw = getpwuid(getuid())))
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home = pw->pw_dir;
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if(!home) {
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fprintf(stderr, "spmenu: could not find home directory");
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return;
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}
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}
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/* which cache do we try? */
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dsize = "normal";
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if (imagesize > 128)
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dsize = "large";
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slen = snprintf(NULL, 0, "file://%s", file)+1;
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if(!(buf = malloc(slen))) {
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fprintf(stderr, "spmenu: out of memory");
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return;
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}
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/* calculate md5 from path */
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sprintf(buf, "file://%s", file);
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MD5((unsigned char*)buf, slen, digest);
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free(buf);
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for(i = 0; i < MD5_DIGEST_LENGTH; ++i)
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sprintf(&md5[i*2], "%02x", (unsigned int)digest[i]);
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/* path for cached thumbnail */
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if (xdg_cache)
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slen = snprintf(NULL, 0, "%s/thumbnails/%s/%s.png", xdg_cache, dsize, md5)+1;
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else
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slen = snprintf(NULL, 0, "%s/.thumbnails/%s/%s.png", home, dsize, md5)+1;
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if(!(buf = malloc(slen))) {
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fprintf(stderr, "out of memory");
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return;
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}
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if (xdg_cache)
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sprintf(buf, "%s/thumbnails/%s/%s.png", xdg_cache, dsize, md5);
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else
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sprintf(buf, "%s/.thumbnails/%s/%s.png", home, dsize, md5);
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loadimage(buf, width, height);
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if (image && *width < imagesize && *height < imagesize) {
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imlib_free_image();
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image = NULL;
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} else if(image && (*width > imagesize || *height > imagesize)) {
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scaleimage(*width, *height);
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}
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/* we are done */
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if (image) {
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free(buf);
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return;
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}
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/* we din't find anything from cache, or it was just wrong */
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loadimage(file, width, height);
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if (!image) {
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free(buf);
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return;
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}
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scaleimage(*width, *height);
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imlib_image_set_format("png");
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createifnexist_rec(buf);
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imlib_save_image(buf);
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free(buf);
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}
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