initwayland

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;
-}