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Diffstat (limited to 'utils/nsxiv/image.c')
| -rw-r--r-- | utils/nsxiv/image.c | 912 |
1 files changed, 0 insertions, 912 deletions
diff --git a/utils/nsxiv/image.c b/utils/nsxiv/image.c deleted file mode 100644 index 2904887..0000000 --- a/utils/nsxiv/image.c +++ /dev/null @@ -1,912 +0,0 @@ -/* Copyright 2011-2020 Bert Muennich - * Copyright 2021-2022 nsxiv contributors - * - * This file is a part of nsxiv. - * - * nsxiv is free software; you can redistribute it and/or modify - * 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, - * 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/>. - */ - -#include "nsxiv.h" -#define _IMAGE_CONFIG -#include "config.h" - -#include <errno.h> -#include <stdlib.h> -#include <string.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#if HAVE_LIBEXIF -#include <libexif/exif-data.h> -#endif - -#if HAVE_LIBGIF -#include <gif_lib.h> -enum { DEF_GIF_DELAY = 75 }; -#endif - -#if HAVE_LIBWEBP -#include <webp/decode.h> -#include <webp/demux.h> -enum { DEF_WEBP_DELAY = 75 }; -#endif - -#define ZOOM_MIN (zoom_levels[0] / 100) -#define ZOOM_MAX (zoom_levels[ARRLEN(zoom_levels)-1] / 100) - -static int calc_cache_size(void) -{ - int cache; - long pages, page_size; - - if (CACHE_SIZE_MEM_PERCENTAGE <= 0) - return 0; - - pages = sysconf(_SC_PHYS_PAGES); - page_size = sysconf(_SC_PAGE_SIZE); - if (pages < 0 || page_size < 0) - return CACHE_SIZE_FALLBACK; - cache = (pages/100) * CACHE_SIZE_MEM_PERCENTAGE; - cache *= page_size; - - return MIN(cache, CACHE_SIZE_LIMIT); -} - -void img_init(img_t *img, win_t *win) -{ - imlib_context_set_display(win->env.dpy); - imlib_context_set_visual(win->env.vis); - imlib_context_set_colormap(win->env.cmap); - imlib_set_cache_size(calc_cache_size()); - - img->im = NULL; - img->win = win; - img->scalemode = options->scalemode; - img->zoom = options->zoom; - img->zoom = MAX(img->zoom, ZOOM_MIN); - img->zoom = MIN(img->zoom, ZOOM_MAX); - img->checkpan = false; - img->dirty = false; - img->aa = ANTI_ALIAS; - img->alpha = ALPHA_LAYER; - img->multi.cap = img->multi.cnt = 0; - img->multi.animate = options->animate; - img->multi.framedelay = options->framerate > 0 ? 1000 / options->framerate : 0; - img->multi.length = 0; - - img->cmod = imlib_create_color_modifier(); - imlib_context_set_color_modifier(img->cmod); - img_change_gamma(img, options->gamma); - - img->ss.on = options->slideshow > 0; - img->ss.delay = options->slideshow > 0 ? options->slideshow : SLIDESHOW_DELAY * 10; -} - -#if HAVE_LIBEXIF -void exif_auto_orientate(const fileinfo_t *file) -{ - ExifData *ed; - ExifEntry *entry; - int byte_order, orientation = 0; - - if ((ed = exif_data_new_from_file(file->path)) == NULL) - return; - byte_order = exif_data_get_byte_order(ed); - entry = exif_content_get_entry(ed->ifd[EXIF_IFD_0], EXIF_TAG_ORIENTATION); - if (entry != NULL) - orientation = exif_get_short(entry->data, byte_order); - exif_data_unref(ed); - - switch (orientation) { - case 5: - imlib_image_orientate(1); - /* fall through */ - case 2: - imlib_image_flip_vertical(); - break; - case 3: - imlib_image_orientate(2); - break; - case 7: - imlib_image_orientate(1); - /* fall through */ - case 4: - imlib_image_flip_horizontal(); - break; - case 6: - imlib_image_orientate(1); - break; - case 8: - imlib_image_orientate(3); - break; - } -} -#endif - -#if HAVE_LIBGIF || HAVE_LIBWEBP -static void img_multiframe_context_set(img_t *img) -{ - if (img->multi.cnt > 1) { - imlib_context_set_image(img->im); - imlib_free_image(); - img->im = img->multi.frames[0].im; - } else if (img->multi.cnt == 1) { - imlib_context_set_image(img->multi.frames[0].im); - imlib_free_image(); - img->multi.cnt = 0; - } - - imlib_context_set_image(img->im); -} -#endif - -#if HAVE_LIBGIF -static bool img_load_gif(img_t *img, const fileinfo_t *file) -{ - GifFileType *gif; - GifRowType *rows = NULL; - GifRecordType rec; - ColorMapObject *cmap; - DATA32 bgpixel = 0, *data, *ptr; - DATA32 *prev_frame = NULL; - Imlib_Image im; - int i, j, bg, r, g, b; - int x, y, w, h, sw, sh; - int px, py, pw, ph; - int intoffset[] = { 0, 4, 2, 1 }; - int intjump[] = { 8, 8, 4, 2 }; - int transp = -1; - unsigned int disposal = 0, prev_disposal = 0; - unsigned int delay = 0; - bool err = false; - - if (img->multi.cap == 0) { - img->multi.cap = 8; - img->multi.frames = emalloc(img->multi.cap * sizeof(img_frame_t)); - } - img->multi.cnt = img->multi.sel = 0; - img->multi.length = 0; - -#if defined(GIFLIB_MAJOR) && GIFLIB_MAJOR >= 5 - gif = DGifOpenFileName(file->path, NULL); -#else - gif = DGifOpenFileName(file->path); -#endif - if (gif == NULL) { - error(0, 0, "%s: Error opening gif image", file->name); - return false; - } - bg = gif->SBackGroundColor; - sw = gif->SWidth; - sh = gif->SHeight; - px = py = pw = ph = 0; - - do { - if (DGifGetRecordType(gif, &rec) == GIF_ERROR) { - err = true; - break; - } - if (rec == EXTENSION_RECORD_TYPE) { - int ext_code; - GifByteType *ext = NULL; - - DGifGetExtension(gif, &ext_code, &ext); - while (ext) { - if (ext_code == GRAPHICS_EXT_FUNC_CODE) { - if (ext[1] & 1) - transp = (int) ext[4]; - else - transp = -1; - - delay = 10 * ((unsigned int) ext[3] << 8 | (unsigned int) ext[2]); - disposal = (unsigned int) ext[1] >> 2 & 0x7; - } - ext = NULL; - DGifGetExtensionNext(gif, &ext); - } - } else if (rec == IMAGE_DESC_RECORD_TYPE) { - if (DGifGetImageDesc(gif) == GIF_ERROR) { - err = true; - break; - } - x = gif->Image.Left; - y = gif->Image.Top; - w = gif->Image.Width; - h = gif->Image.Height; - - rows = emalloc(h * sizeof(GifRowType)); - for (i = 0; i < h; i++) - rows[i] = emalloc(w * sizeof(GifPixelType)); - if (gif->Image.Interlace) { - for (i = 0; i < 4; i++) { - for (j = intoffset[i]; j < h; j += intjump[i]) - DGifGetLine(gif, rows[j], w); - } - } else { - for (i = 0; i < h; i++) - DGifGetLine(gif, rows[i], w); - } - - ptr = data = emalloc(sw * sh * sizeof(DATA32)); - cmap = gif->Image.ColorMap ? gif->Image.ColorMap : gif->SColorMap; - /* if bg > cmap->ColorCount, it is transparent black already */ - if (cmap && bg >= 0 && bg < cmap->ColorCount) { - r = cmap->Colors[bg].Red; - g = cmap->Colors[bg].Green; - b = cmap->Colors[bg].Blue; - bgpixel = 0x00ffffff & (r << 16 | g << 8 | b); - } - - for (i = 0; i < sh; i++) { - for (j = 0; j < sw; j++) { - if (i < y || i >= y + h || j < x || j >= x + w || - rows[i-y][j-x] == transp) - { - if (prev_frame != NULL && (prev_disposal != 2 || - i < py || i >= py + ph || j < px || j >= px + pw)) - { - *ptr = prev_frame[i * sw + j]; - } else { - *ptr = bgpixel; - } - } else { - r = cmap->Colors[rows[i-y][j-x]].Red; - g = cmap->Colors[rows[i-y][j-x]].Green; - b = cmap->Colors[rows[i-y][j-x]].Blue; - *ptr = 0xffu << 24 | r << 16 | g << 8 | b; - } - ptr++; - } - } - - im = imlib_create_image_using_copied_data(sw, sh, data); - - for (i = 0; i < h; i++) - free(rows[i]); - free(rows); - free(data); - - if (im == NULL) { - err = true; - break; - } - - imlib_context_set_image(im); - imlib_image_set_format("gif"); - if (transp >= 0) - imlib_image_set_has_alpha(1); - - if (disposal != 3) - prev_frame = imlib_image_get_data_for_reading_only(); - prev_disposal = disposal; - px = x, py = y, pw = w, ph = h; - - if (img->multi.cnt == img->multi.cap) { - img->multi.cap *= 2; - img->multi.frames = erealloc(img->multi.frames, - img->multi.cap * sizeof(img_frame_t)); - } - img->multi.frames[img->multi.cnt].im = im; - delay = img->multi.framedelay > 0 ? img->multi.framedelay : delay; - img->multi.frames[img->multi.cnt].delay = delay > 0 ? delay : DEF_GIF_DELAY; - img->multi.length += img->multi.frames[img->multi.cnt].delay; - img->multi.cnt++; - } - } while (rec != TERMINATE_RECORD_TYPE); - -#if defined(GIFLIB_MAJOR) && GIFLIB_MAJOR >= 5 && GIFLIB_MINOR >= 1 - DGifCloseFile(gif, NULL); -#else - DGifCloseFile(gif); -#endif - - if (err && (file->flags & FF_WARN)) - error(0, 0, "%s: Corrupted gif file", file->name); - - img_multiframe_context_set(img); - - return !err; -} -#endif /* HAVE_LIBGIF */ - - -#if HAVE_LIBWEBP -static bool img_load_webp(img_t *img, const fileinfo_t *file) -{ - FILE *webp_file; - WebPData data; - Imlib_Image im = NULL; - struct WebPAnimDecoderOptions opts; - WebPAnimDecoder *dec = NULL; - struct WebPAnimInfo info; - unsigned char *buf = NULL, *bytes = NULL; - int ts; - const WebPDemuxer *demux; - WebPIterator iter; - unsigned long flags; - unsigned int delay; - bool err = false; - - if ((webp_file = fopen(file->path, "rb")) == NULL) { - error(0, errno, "%s: Error opening webp image", file->name); - return false; - } - fseek(webp_file, 0L, SEEK_END); - data.size = ftell(webp_file); - rewind(webp_file); - bytes = emalloc(data.size); - if ((err = fread(bytes, 1, data.size, webp_file) != data.size)) { - error(0, 0, "%s: Error reading webp image", file->name); - goto fail; - } - data.bytes = bytes; - - /* Setup the WebP Animation Decoder */ - if ((err = !WebPAnimDecoderOptionsInit(&opts))) { - error(0, 0, "%s: WebP library version mismatch", file->name); - goto fail; - } - opts.color_mode = MODE_BGRA; - /* NOTE: Multi-threaded decoding may cause problems on some system */ - opts.use_threads = true; - dec = WebPAnimDecoderNew(&data, &opts); - if ((err = (dec == NULL) || !WebPAnimDecoderGetInfo(dec, &info))) { - error(0, 0, "%s: WebP parsing or memory error (file is corrupt?)", file->name); - goto fail; - } - demux = WebPAnimDecoderGetDemuxer(dec); - - /* Get global information for the image */ - flags = WebPDemuxGetI(demux, WEBP_FF_FORMAT_FLAGS); - img->w = WebPDemuxGetI(demux, WEBP_FF_CANVAS_WIDTH); - img->h = WebPDemuxGetI(demux, WEBP_FF_CANVAS_HEIGHT); - - if (info.frame_count > img->multi.cap) { - img->multi.cap = info.frame_count; - img->multi.frames = erealloc(img->multi.frames, - img->multi.cap * sizeof(img_frame_t)); - } - - /* Load and decode frames (also works on images with only 1 frame) */ - img->multi.cnt = img->multi.sel = 0; - while (WebPAnimDecoderGetNext(dec, &buf, &ts)) { - im = imlib_create_image_using_copied_data( - info.canvas_width, info.canvas_height, (DATA32*)buf); - imlib_context_set_image(im); - imlib_image_set_format("webp"); - /* Get an iterator of this frame - used for frame info (duration, etc.) */ - WebPDemuxGetFrame(demux, img->multi.cnt+1, &iter); - imlib_image_set_has_alpha((flags & ALPHA_FLAG) == ALPHA_FLAG); - /* Store info for this frame */ - img->multi.frames[img->multi.cnt].im = im; - delay = iter.duration > 0 ? iter.duration : DEF_WEBP_DELAY; - img->multi.frames[img->multi.cnt].delay = delay; - img->multi.length += img->multi.frames[img->multi.cnt].delay; - img->multi.cnt++; - } - WebPDemuxReleaseIterator(&iter); - - img_multiframe_context_set(img); -fail: - if (dec != NULL) - WebPAnimDecoderDelete(dec); - free(bytes); - fclose(webp_file); - return !err; -} -#endif /* HAVE_LIBWEBP */ - -Imlib_Image img_open(const fileinfo_t *file) -{ - struct stat st; - Imlib_Image im = NULL; - - if (access(file->path, R_OK) == 0 && - stat(file->path, &st) == 0 && S_ISREG(st.st_mode)) - { - im = imlib_load_image(file->path); - if (im != NULL) { - imlib_context_set_image(im); - if (imlib_image_get_data_for_reading_only() == NULL) { - imlib_free_image(); - im = NULL; - } - } - } - if (im == NULL && (file->flags & FF_WARN)) - error(0, 0, "%s: Error opening image", file->name); - return im; -} - -bool img_load(img_t *img, const fileinfo_t *file) -{ - const char *fmt; - - if ((img->im = img_open(file)) == NULL) - return false; - - imlib_image_set_changes_on_disk(); - -/* since v1.7.5, Imlib2 can parse exif orientation from jpeg files. - * this version also happens to be the first one which defines the - * IMLIB2_VERSION macro. - */ -#if HAVE_LIBEXIF && !defined(IMLIB2_VERSION) - exif_auto_orientate(file); -#endif - - if ((fmt = imlib_image_format()) != NULL) { -#if HAVE_LIBGIF - if (STREQ(fmt, "gif")) - img_load_gif(img, file); -#endif -#if HAVE_LIBWEBP - if (STREQ(fmt, "webp")) - img_load_webp(img, file); -#endif -#if HAVE_LIBEXIF && defined(IMLIB2_VERSION) - if (!STREQ(fmt, "jpeg") && !STREQ(fmt, "jpg")) - exif_auto_orientate(file); -#endif - } - img->w = imlib_image_get_width(); - img->h = imlib_image_get_height(); - img->checkpan = true; - img->dirty = true; - - return true; -} - -CLEANUP void img_close(img_t *img, bool decache) -{ - int i; - - if (img->multi.cnt > 0) { - for (i = 0; i < img->multi.cnt; i++) { - imlib_context_set_image(img->multi.frames[i].im); - imlib_free_image(); - } - img->multi.cnt = 0; - img->im = NULL; - } else if (img->im != NULL) { - imlib_context_set_image(img->im); - if (decache) - imlib_free_image_and_decache(); - else - imlib_free_image(); - img->im = NULL; - } -} - -static void img_check_pan(img_t *img, bool moved) -{ - win_t *win; - float w, h, ox, oy; - - win = img->win; - w = img->w * img->zoom; - h = img->h * img->zoom; - ox = img->x; - oy = img->y; - - if (w < win->w) - img->x = (win->w - w) / 2; - else if (img->x > 0) - img->x = 0; - else if (img->x + w < win->w) - img->x = win->w - w; - if (h < win->h) - img->y = (win->h - h) / 2; - else if (img->y > 0) - img->y = 0; - else if (img->y + h < win->h) - img->y = win->h - h; - - if (!moved && (ox != img->x || oy != img->y)) - img->dirty = true; -} - -static bool img_fit(img_t *img) -{ - float z, zw, zh; - - if (img->scalemode == SCALE_ZOOM) - return false; - - zw = (float) img->win->w / (float) img->w; - zh = (float) img->win->h / (float) img->h; - - switch (img->scalemode) { - case SCALE_FILL: - z = MAX(zw, zh); - break; - case SCALE_WIDTH: - z = zw; - break; - case SCALE_HEIGHT: - z = zh; - break; - default: - z = MIN(zw, zh); - break; - } - z = MIN(z, img->scalemode == SCALE_DOWN ? 1.0 : ZOOM_MAX); - - if (ABS(img->zoom - z) > 1.0/MAX(img->w, img->h)) { - img->zoom = z; - img->dirty = true; - return true; - } else { - return false; - } -} - -void img_render(img_t *img) -{ - win_t *win; - int sx, sy, sw, sh; - int dx, dy, dw, dh; - Imlib_Image bg; - - win = img->win; - img_fit(img); - - if (img->checkpan) { - img_check_pan(img, false); - img->checkpan = false; - } - - if (!img->dirty) - return; - - /* calculate source and destination offsets: - * - part of image drawn on full window, or - * - full image drawn on part of window - */ - if (img->x <= 0) { - sx = -img->x / img->zoom + 0.5; - sw = win->w / img->zoom; - dx = 0; - dw = win->w; - } else { - sx = 0; - sw = img->w; - dx = img->x; - dw = MAX(img->w * img->zoom, 1); - } - if (img->y <= 0) { - sy = -img->y / img->zoom + 0.5; - sh = win->h / img->zoom; - dy = win->bar.top ? win->bar.h : 0; - dh = win->h; - } else { - sy = 0; - sh = img->h; - dy = img->y + (win->bar.top ? win->bar.h : 0); - dh = MAX(img->h * img->zoom, 1); - } - - win_clear(win); - - imlib_context_set_image(img->im); - imlib_context_set_anti_alias(img->aa); - imlib_context_set_drawable(win->buf.pm); - - /* manual blending, for performance reasons. - * see https://phab.enlightenment.org/T8969#156167 for more details. - */ - if (imlib_image_has_alpha()) { - if ((bg = imlib_create_image(dw, dh)) == NULL) { - error(0, ENOMEM, "Failed to create image"); - goto fallback; - } - imlib_context_set_image(bg); - imlib_image_set_has_alpha(0); - - if (img->alpha) { - int i, c, r; - DATA32 col[2] = { 0xFF666666, 0xFF999999 }; - DATA32 * data = imlib_image_get_data(); - - for (r = 0; r < dh; r++) { - i = r * dw; - if (r == 0 || r == 8) { - for (c = 0; c < dw; c++) - data[i++] = col[!(c & 8) ^ !r]; - } else { - memcpy(&data[i], &data[(r & 8) * dw], dw * sizeof(data[0])); - } - } - imlib_image_put_back_data(data); - } else { - XColor c = win->win_bg; - imlib_context_set_color(c.red >> 8, c.green >> 8, c.blue >> 8, 0xFF); - imlib_image_fill_rectangle(0, 0, dw, dh); - } - imlib_blend_image_onto_image(img->im, 0, sx, sy, sw, sh, 0, 0, dw, dh); - imlib_context_set_color_modifier(NULL); - imlib_render_image_on_drawable(dx, dy); - imlib_free_image(); - imlib_context_set_color_modifier(img->cmod); - } else { -fallback: - imlib_render_image_part_on_drawable_at_size(sx, sy, sw, sh, dx, dy, dw, dh); - } - img->dirty = false; -} - -bool img_fit_win(img_t *img, scalemode_t sm) -{ - float oz; - - oz = img->zoom; - img->scalemode = sm; - - if (img_fit(img)) { - img->x = img->win->w / 2 - (img->win->w / 2 - img->x) * img->zoom / oz; - img->y = img->win->h / 2 - (img->win->h / 2 - img->y) * img->zoom / oz; - img->checkpan = true; - return true; - } else { - return false; - } -} - -bool img_zoom_to(img_t *img, float z) -{ - int x, y; - if (ZOOM_MIN <= z && z <= ZOOM_MAX) { - win_cursor_pos(img->win, &x, &y); - if (x < 0 || x >= img->win->w || y < 0 || y >= img->win->h) { - x = img->win->w / 2; - y = img->win->h / 2; - } - img->x = x - (x - img->x) * z / img->zoom; - img->y = y - (y - img->y) * z / img->zoom; - img->zoom = z; - img->scalemode = SCALE_ZOOM; - img->checkpan = true; - img->dirty = true; - return true; - } else { - return false; - } -} - -bool img_zoom(img_t *img, int d) -{ - int i = d > 0 ? 0 : ARRLEN(zoom_levels)-1; - while (i >= 0 && i < ARRLEN(zoom_levels) && (d > 0 ? - zoom_levels[i]/100 <= img->zoom : zoom_levels[i]/100 >= img->zoom)) - { - i += d; - } - i = MIN(MAX(i, 0), ARRLEN(zoom_levels)-1); - return img_zoom_to(img, zoom_levels[i]/100); -} - -bool img_pos(img_t *img, float x, float y) -{ - float ox, oy; - - ox = img->x; - oy = img->y; - - img->x = x; - img->y = y; - - img_check_pan(img, true); - - if (ox != img->x || oy != img->y) { - img->dirty = true; - return true; - } else { - return false; - } -} - -static bool img_move(img_t *img, float dx, float dy) -{ - return img_pos(img, img->x + dx, img->y + dy); -} - -bool img_pan(img_t *img, direction_t dir, int d) -{ - /* d < 0: screen-wise - * d = 0: 1/PAN_FRACTION of screen - * d > 0: num of pixels - */ - float x, y; - - if (d > 0) { - x = y = MAX(1, (float) d * img->zoom); - } else { - x = img->win->w / (d < 0 ? 1 : PAN_FRACTION); - y = img->win->h / (d < 0 ? 1 : PAN_FRACTION); - } - - switch (dir) { - case DIR_LEFT: - return img_move(img, x, 0.0); - case DIR_RIGHT: - return img_move(img, -x, 0.0); - case DIR_UP: - return img_move(img, 0.0, y); - case DIR_DOWN: - return img_move(img, 0.0, -y); - } - return false; -} - -bool img_pan_center(img_t *img) -{ - float x, y; - x = (img->win->w - img->w * img->zoom) / 2.0; - y = (img->win->h - img->h * img->zoom) / 2.0; - return img_pos(img, x, y); -} - -bool img_pan_edge(img_t *img, direction_t dir) -{ - float ox, oy; - - ox = img->x; - oy = img->y; - - if (dir & DIR_LEFT) - img->x = 0; - if (dir & DIR_RIGHT) - img->x = img->win->w - img->w * img->zoom; - if (dir & DIR_UP) - img->y = 0; - if (dir & DIR_DOWN) - img->y = img->win->h - img->h * img->zoom; - - img_check_pan(img, true); - - if (ox != img->x || oy != img->y) { - img->dirty = true; - return true; - } else { - return false; - } -} - -void img_rotate(img_t *img, degree_t d) -{ - int i, tmp; - float ox, oy; - - imlib_context_set_image(img->im); - imlib_image_orientate(d); - - for (i = 0; i < img->multi.cnt; i++) { - if (i != img->multi.sel) { - imlib_context_set_image(img->multi.frames[i].im); - imlib_image_orientate(d); - } - } - if (d == DEGREE_90 || d == DEGREE_270) { - ox = d == DEGREE_90 ? img->x : img->win->w - img->x - img->w * img->zoom; - oy = d == DEGREE_270 ? img->y : img->win->h - img->y - img->h * img->zoom; - - img->x = oy + (img->win->w - img->win->h) / 2; - img->y = ox + (img->win->h - img->win->w) / 2; - - tmp = img->w; - img->w = img->h; - img->h = tmp; - img->checkpan = true; - } - img->dirty = true; -} - -void img_flip(img_t *img, flipdir_t d) -{ - int i; - void (*imlib_flip_op[3])(void) = { - imlib_image_flip_horizontal, - imlib_image_flip_vertical, - imlib_image_flip_diagonal - }; - - d = (d & (FLIP_HORIZONTAL | FLIP_VERTICAL)) - 1; - - if (d < 0 || d >= ARRLEN(imlib_flip_op)) - return; - - imlib_context_set_image(img->im); - imlib_flip_op[d](); - - for (i = 0; i < img->multi.cnt; i++) { - if (i != img->multi.sel) { - imlib_context_set_image(img->multi.frames[i].im); - imlib_flip_op[d](); - } - } - img->dirty = true; -} - -void img_toggle_antialias(img_t *img) -{ - img->aa = !img->aa; - imlib_context_set_image(img->im); - imlib_context_set_anti_alias(img->aa); - img->dirty = true; -} - -bool img_change_gamma(img_t *img, int d) -{ - /* d < 0: decrease gamma - * d = 0: reset gamma - * d > 0: increase gamma - */ - int gamma; - double range; - - if (d == 0) - gamma = 0; - else - gamma = MIN(MAX(img->gamma + d, -GAMMA_RANGE), GAMMA_RANGE); - - if (img->gamma != gamma) { - imlib_reset_color_modifier(); - if (gamma) { - range = gamma <= 0 ? 1.0 : GAMMA_MAX - 1.0; - imlib_modify_color_modifier_gamma(1.0 + gamma * (range / GAMMA_RANGE)); - } - img->gamma = gamma; - img->dirty = true; - return true; - } else { - return false; - } -} - -static bool img_frame_goto(img_t *img, int n) -{ - if (n < 0 || n >= img->multi.cnt || n == img->multi.sel) - return false; - - img->multi.sel = n; - img->im = img->multi.frames[n].im; - - imlib_context_set_image(img->im); - img->w = imlib_image_get_width(); - img->h = imlib_image_get_height(); - img->checkpan = true; - img->dirty = true; - - return true; -} - -bool img_frame_navigate(img_t *img, int d) -{ - if (img->multi.cnt == 0 || d == 0) - return false; - - d += img->multi.sel; - d = MAX(0, MIN(d, img->multi.cnt - 1)); - - return img_frame_goto(img, d); -} - -bool img_frame_animate(img_t *img) -{ - if (img->multi.cnt > 0) - return img_frame_goto(img, (img->multi.sel + 1) % img->multi.cnt); - else - return false; -} |