nsxiv/image.c

772 lines
16 KiB
C
Raw Normal View History

2013-02-08 20:52:41 +00:00
/* Copyright 2011, 2012 Bert Muennich
2011-01-17 13:57:59 +00:00
*
2013-02-08 20:52:41 +00:00
* This file is part of sxiv.
*
2013-02-08 20:52:41 +00:00
* sxiv 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.
*
2013-02-08 20:52:41 +00:00
* sxiv 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 sxiv. If not, see <http://www.gnu.org/licenses/>.
2011-01-17 13:57:59 +00:00
*/
#include <stdlib.h>
2011-09-06 10:09:57 +01:00
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include "image.h"
#include "options.h"
#include "util.h"
#define _IMAGE_CONFIG
#include "config.h"
#if HAVE_LIBEXIF
#include <libexif/exif-data.h>
#endif
#if HAVE_GIFLIB
#include <gif_lib.h>
enum { DEF_GIF_DELAY = 75 };
#endif
2011-01-21 09:29:31 +00:00
float zoom_min;
float zoom_max;
2013-11-14 16:06:20 +00:00
static int zoomdiff(float z1, float z2)
{
2012-08-16 20:21:08 +01:00
return (int) (z1 * 1000.0 - z2 * 1000.0);
2011-09-29 12:12:40 +01:00
}
void img_init(img_t *img, win_t *win)
{
zoom_min = zoom_levels[0] / 100.0;
zoom_max = zoom_levels[ARRLEN(zoom_levels) - 1] / 100.0;
imlib_context_set_display(win->env.dpy);
imlib_context_set_visual(win->env.vis);
imlib_context_set_colormap(win->env.cmap);
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.length = 0;
img->cmod = imlib_create_color_modifier();
imlib_context_set_color_modifier(img->cmod);
img->gamma = MIN(MAX(options->gamma, -GAMMA_RANGE), GAMMA_RANGE);
img->ss.on = options->slideshow > 0;
img->ss.delay = options->slideshow > 0 ? options->slideshow : SLIDESHOW_DELAY;
}
#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);
case 2:
imlib_image_flip_vertical();
break;
case 3:
imlib_image_orientate(2);
break;
case 7:
imlib_image_orientate(1);
case 4:
imlib_image_flip_horizontal();
break;
case 6:
imlib_image_orientate(1);
break;
case 8:
imlib_image_orientate(3);
break;
}
}
#endif
#if HAVE_GIFLIB
bool img_load_gif(img_t *img, const fileinfo_t *file)
{
2011-08-16 23:56:18 +01:00
GifFileType *gif;
GifRowType *rows = NULL;
GifRecordType rec;
ColorMapObject *cmap;
DATA32 bgpixel, *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;
2011-08-16 23:56:18 +01:00
int intoffset[] = { 0, 4, 2, 1 };
int intjump[] = { 8, 8, 4, 2 };
2011-09-11 20:01:24 +01:00
int transp = -1;
unsigned int disposal = 0, prev_disposal = 0;
2011-08-18 15:05:32 +01:00
unsigned int delay = 0;
2011-09-11 20:01:24 +01:00
bool err = false;
2011-08-16 23:56:18 +01:00
if (img->multi.cap == 0) {
img->multi.cap = 8;
2011-08-18 15:05:32 +01:00
img->multi.frames = (img_frame_t*)
s_malloc(sizeof(img_frame_t) * img->multi.cap);
2011-08-16 23:56:18 +01:00
}
img->multi.cnt = img->multi.sel = 0;
img->multi.length = 0;
2011-08-16 23:56:18 +01:00
#if defined(GIFLIB_MAJOR) && GIFLIB_MAJOR >= 5
gif = DGifOpenFileName(file->path, NULL);
#else
2011-08-16 23:56:18 +01:00
gif = DGifOpenFileName(file->path);
#endif
2011-09-29 11:43:36 +01:00
if (gif == NULL) {
2011-08-16 23:56:18 +01:00
warn("could not open gif file: %s", file->name);
2011-09-11 20:01:24 +01:00
return false;
2011-08-16 23:56:18 +01:00
}
bg = gif->SBackGroundColor;
sw = gif->SWidth;
sh = gif->SHeight;
px = py = pw = ph = 0;
2011-08-16 23:56:18 +01:00
do {
if (DGifGetRecordType(gif, &rec) == GIF_ERROR) {
2011-09-11 20:01:24 +01:00
err = true;
2011-08-16 23:56:18 +01:00
break;
}
if (rec == EXTENSION_RECORD_TYPE) {
int ext_code;
GifByteType *ext = NULL;
DGifGetExtension(gif, &ext_code, &ext);
while (ext) {
2013-12-31 15:38:42 +00:00
if (ext_code == GRAPHICS_EXT_FUNC_CODE) {
if (ext[1] & 1)
transp = (int) ext[4];
else
transp = -1;
2011-08-18 15:05:32 +01:00
delay = 10 * ((unsigned int) ext[3] << 8 | (unsigned int) ext[2]);
disposal = (unsigned int) ext[1] >> 2 & 0x7;
}
2011-08-16 23:56:18 +01:00
ext = NULL;
DGifGetExtensionNext(gif, &ext);
}
} else if (rec == IMAGE_DESC_RECORD_TYPE) {
if (DGifGetImageDesc(gif) == GIF_ERROR) {
2011-09-11 20:01:24 +01:00
err = true;
2011-08-16 23:56:18 +01:00
break;
}
x = gif->Image.Left;
y = gif->Image.Top;
2011-08-16 23:56:18 +01:00
w = gif->Image.Width;
h = gif->Image.Height;
2011-08-16 23:56:18 +01:00
rows = (GifRowType*) s_malloc(h * sizeof(GifRowType));
for (i = 0; i < h; i++)
rows[i] = (GifRowType) s_malloc(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 = (DATA32*) s_malloc(sizeof(DATA32) * sw * sh);
2011-08-16 23:56:18 +01:00
cmap = gif->Image.ColorMap ? gif->Image.ColorMap : gif->SColorMap;
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++) {
2011-09-28 11:53:44 +01:00
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;
}
2011-08-16 23:56:18 +01:00
} 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 = 0xff << 24 | r << 16 | g << 8 | b;
2011-08-16 23:56:18 +01:00
}
ptr++;
2011-08-16 23:56:18 +01:00
}
}
im = imlib_create_image_using_copied_data(sw, sh, data);
2011-08-16 23:56:18 +01:00
for (i = 0; i < h; i++)
free(rows[i]);
free(rows);
free(data);
2011-09-29 11:43:36 +01:00
if (im == NULL) {
2011-09-11 20:01:24 +01:00
err = true;
2011-08-16 23:56:18 +01:00
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;
2011-08-16 23:56:18 +01:00
if (img->multi.cnt == img->multi.cap) {
img->multi.cap *= 2;
2011-08-18 15:05:32 +01:00
img->multi.frames = (img_frame_t*)
2011-08-16 23:56:18 +01:00
s_realloc(img->multi.frames,
2011-08-18 15:05:32 +01:00
img->multi.cap * sizeof(img_frame_t));
2011-08-16 23:56:18 +01:00
}
2011-08-18 15:05:32 +01:00
img->multi.frames[img->multi.cnt].im = im;
img->multi.frames[img->multi.cnt].delay = delay > 0 ? delay : DEF_GIF_DELAY;
img->multi.length += img->multi.frames[img->multi.cnt].delay;
2011-08-18 15:05:32 +01:00
img->multi.cnt++;
2011-08-16 23:56:18 +01:00
}
} while (rec != TERMINATE_RECORD_TYPE);
2014-05-27 10:46:06 +01:00
#if defined(GIFLIB_MAJOR) && GIFLIB_MAJOR >= 5 && GIFLIB_MINOR >= 1
DGifCloseFile(gif, NULL);
#else
2011-08-16 23:56:18 +01:00
DGifCloseFile(gif);
2014-05-27 10:46:06 +01:00
#endif
2011-08-16 23:56:18 +01:00
if (err && (file->flags & FF_WARN))
warn("corrupted gif file: %s", file->name);
if (img->multi.cnt > 1) {
2011-08-16 23:56:18 +01:00
imlib_context_set_image(img->im);
imlib_free_image();
2011-08-18 15:05:32 +01:00
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();
2011-08-16 23:56:18 +01:00
img->multi.cnt = 0;
}
imlib_context_set_image(img->im);
return !err;
}
#endif /* HAVE_GIFLIB */
2011-08-16 23:56:18 +01:00
bool img_load(img_t *img, const fileinfo_t *file)
{
const char *fmt;
2011-08-16 23:56:18 +01:00
2011-09-29 11:43:36 +01:00
if (access(file->path, R_OK) < 0 ||
(img->im = imlib_load_image(file->path)) == NULL)
{
if (file->flags & FF_WARN)
warn("could not open image: %s", file->name);
2011-09-11 20:01:24 +01:00
return false;
}
2011-01-18 19:11:28 +00:00
imlib_context_set_image(img->im);
imlib_image_set_changes_on_disk();
#if HAVE_LIBEXIF
exif_auto_orientate(file);
#endif
2011-08-16 23:56:18 +01:00
if ((fmt = imlib_image_format()) != NULL) {
#if HAVE_GIFLIB
if (STREQ(fmt, "gif"))
img_load_gif(img, file);
#endif
}
img->w = imlib_image_get_width();
img->h = imlib_image_get_height();
img->checkpan = true;
2011-09-11 20:01:24 +01:00
img->dirty = true;
2011-01-22 22:27:29 +00:00
2011-09-11 20:01:24 +01:00
return true;
2011-01-18 16:20:41 +00:00
}
2011-01-18 19:11:28 +00:00
void img_close(img_t *img, bool decache)
{
int i;
2011-09-29 11:43:36 +01:00
if (img->multi.cnt > 0) {
for (i = 0; i < img->multi.cnt; i++) {
2011-08-18 15:05:32 +01:00
imlib_context_set_image(img->multi.frames[i].im);
imlib_free_image();
}
img->multi.cnt = 0;
img->im = NULL;
2011-09-29 11:43:36 +01:00
} else if (img->im != NULL) {
2011-02-25 11:08:12 +00:00
imlib_context_set_image(img->im);
if (decache)
imlib_free_image_and_decache();
else
imlib_free_image();
2011-02-25 11:08:12 +00:00
img->im = NULL;
}
}
void img_check_pan(img_t *img, bool moved)
{
win_t *win;
2011-09-11 00:13:45 +01:00
int ox, oy;
float w, h;
2011-09-11 00:13:45 +01:00
win = img->win;
w = img->w * img->zoom;
h = img->h * img->zoom;
2011-09-11 00:13:45 +01:00
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;
2011-09-11 00:13:45 +01:00
if (!moved && (ox != img->x || oy != img->y))
2011-09-11 20:01:24 +01:00
img->dirty = true;
2011-01-20 22:22:00 +00:00
}
bool img_fit(img_t *img)
{
2011-09-11 00:13:45 +01:00
float z, zmax, zw, zh;
if (img->scalemode == SCALE_ZOOM)
2011-09-11 20:01:24 +01:00
return false;
2011-09-11 00:13:45 +01:00
zmax = img->scalemode == SCALE_DOWN ? 1.0 : zoom_max;
zw = (float) img->win->w / (float) img->w;
zh = (float) img->win->h / (float) img->h;
switch (img->scalemode) {
case SCALE_WIDTH:
z = zw;
break;
case SCALE_HEIGHT:
z = zh;
break;
default:
z = MIN(zw, zh);
break;
}
2011-09-11 00:13:45 +01:00
z = MAX(z, zoom_min);
z = MIN(z, zmax);
2012-08-16 12:09:44 +01:00
if (zoomdiff(z, img->zoom) != 0) {
2011-09-11 00:13:45 +01:00
img->zoom = z;
2011-09-11 20:01:24 +01:00
img->dirty = true;
return true;
2011-09-11 00:13:45 +01:00
} else {
2011-09-11 20:01:24 +01:00
return false;
2011-09-11 00:13:45 +01:00
}
}
void img_render(img_t *img)
{
win_t *win;
2011-01-20 14:39:08 +00:00
int sx, sy, sw, sh;
int dx, dy, dw, dh;
Imlib_Image bg;
unsigned long c;
2011-01-20 14:39:08 +00:00
win = img->win;
img_fit(img);
2011-01-21 11:13:52 +00:00
2011-01-22 22:27:29 +00:00
if (img->checkpan) {
img_check_pan(img, false);
2011-09-11 20:01:24 +01:00
img->checkpan = false;
2011-01-21 11:13:52 +00:00
}
2011-01-20 22:22:00 +00:00
2011-09-11 00:13:45 +01:00
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;
2011-01-20 20:44:34 +00:00
sw = win->w / img->zoom;
dx = 0;
dw = win->w;
2011-01-18 19:11:28 +00:00
} else {
sx = 0;
2011-01-20 20:44:34 +00:00
sw = img->w;
2011-01-18 19:11:28 +00:00
dx = img->x;
2011-01-20 20:44:34 +00:00
dw = img->w * img->zoom;
2011-01-18 19:11:28 +00:00
}
if (img->y <= 0) {
sy = -img->y / img->zoom + 0.5;
2011-01-20 20:44:34 +00:00
sh = win->h / img->zoom;
dy = 0;
dh = win->h;
2011-01-18 19:11:28 +00:00
} else {
sy = 0;
2011-01-20 20:44:34 +00:00
sh = img->h;
2011-01-18 19:11:28 +00:00
dy = img->y;
2011-01-20 20:44:34 +00:00
dh = img->h * img->zoom;
2011-01-18 19:11:28 +00:00
}
2011-01-20 20:44:34 +00:00
win_clear(win);
2011-01-18 19:11:28 +00:00
imlib_context_set_image(img->im);
imlib_context_set_anti_alias(img->aa);
imlib_context_set_drawable(win->buf.pm);
2011-01-20 20:44:34 +00:00
if (imlib_image_has_alpha()) {
if ((bg = imlib_create_image(dw, dh)) == NULL)
die("could not allocate memory");
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 {
c = win->fullscreen ? win->fscol : win->bgcol;
imlib_context_set_color(c >> 16 & 0xFF, c >> 8 & 0xFF, c & 0xFF, 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 {
imlib_render_image_part_on_drawable_at_size(sx, sy, sw, sh, dx, dy, dw, dh);
}
2011-09-11 20:01:24 +01:00
img->dirty = false;
2011-01-18 19:11:28 +00:00
}
2011-01-20 22:22:00 +00:00
bool img_fit_win(img_t *img, scalemode_t sm)
{
float oz;
2011-02-03 13:32:02 +00:00
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;
2011-09-11 20:01:24 +01:00
return true;
2011-09-11 00:13:45 +01:00
} else {
2011-09-11 20:01:24 +01:00
return false;
2011-09-11 00:13:45 +01:00
}
2011-01-28 12:34:16 +00:00
}
bool img_zoom(img_t *img, float z)
{
2011-01-28 12:34:16 +00:00
z = MAX(z, zoom_min);
z = MIN(z, zoom_max);
img->scalemode = SCALE_ZOOM;
2011-01-20 22:22:00 +00:00
2012-08-16 12:09:44 +01:00
if (zoomdiff(z, img->zoom) != 0) {
img->x = img->win->w / 2 - (img->win->w / 2 - img->x) * z / img->zoom;
img->y = img->win->h / 2 - (img->win->h / 2 - img->y) * z / img->zoom;
2011-01-20 22:22:00 +00:00
img->zoom = z;
2011-09-11 20:01:24 +01:00
img->checkpan = true;
img->dirty = true;
return true;
2011-01-20 22:22:00 +00:00
} else {
2011-09-11 20:01:24 +01:00
return false;
2011-01-20 22:22:00 +00:00
}
}
bool img_zoom_in(img_t *img)
{
2011-01-21 09:29:31 +00:00
int i;
2012-08-16 12:09:44 +01:00
float z;
2011-01-21 09:29:31 +00:00
2011-09-06 10:04:47 +01:00
for (i = 1; i < ARRLEN(zoom_levels); i++) {
2012-08-16 12:09:44 +01:00
z = zoom_levels[i] / 100.0;
if (zoomdiff(z, img->zoom) > 0)
return img_zoom(img, z);
2011-01-21 09:29:31 +00:00
}
2011-09-11 20:01:24 +01:00
return false;
2011-01-20 22:22:00 +00:00
}
bool img_zoom_out(img_t *img)
{
2011-01-21 09:29:31 +00:00
int i;
2012-08-16 12:09:44 +01:00
float z;
2011-01-21 09:29:31 +00:00
2011-09-06 10:04:47 +01:00
for (i = ARRLEN(zoom_levels) - 2; i >= 0; i--) {
2012-08-16 12:09:44 +01:00
z = zoom_levels[i] / 100.0;
if (zoomdiff(z, img->zoom) < 0)
return img_zoom(img, z);
2011-01-21 09:29:31 +00:00
}
2011-09-11 20:01:24 +01:00
return false;
2011-01-20 22:22:00 +00:00
}
2011-01-21 12:48:02 +00:00
bool img_move(img_t *img, float dx, float dy)
{
float ox, oy;
2011-01-21 12:48:02 +00:00
ox = img->x;
oy = img->y;
2011-01-29 21:37:40 +00:00
img->x += dx;
img->y += dy;
img_check_pan(img, true);
2011-01-29 21:37:40 +00:00
2011-09-11 00:13:45 +01:00
if (ox != img->x || oy != img->y) {
2011-09-11 20:01:24 +01:00
img->dirty = true;
return true;
2011-09-11 00:13:45 +01:00
} else {
2011-09-11 20:01:24 +01:00
return false;
2011-09-11 00:13:45 +01:00
}
2011-01-29 21:37:40 +00:00
}
bool img_pan(img_t *img, direction_t dir, int d)
{
/* d < 0: screen-wise
* d = 0: 1/5 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 : 5);
y = img->win->h / (d < 0 ? 1 : 5);
}
2011-01-21 12:48:02 +00:00
switch (dir) {
2011-07-22 13:49:06 +01:00
case DIR_LEFT:
return img_move(img, x, 0.0);
2011-07-22 13:49:06 +01:00
case DIR_RIGHT:
return img_move(img, -x, 0.0);
2011-07-22 13:49:06 +01:00
case DIR_UP:
return img_move(img, 0.0, y);
2011-07-22 13:49:06 +01:00
case DIR_DOWN:
return img_move(img, 0.0, -y);
2011-01-21 12:48:02 +00:00
}
2011-09-11 20:01:24 +01:00
return false;
2011-01-21 12:48:02 +00:00
}
2011-01-26 13:42:10 +00:00
bool img_pan_edge(img_t *img, direction_t dir)
{
2011-05-16 14:54:09 +01:00
int 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;
2011-05-16 14:54:09 +01:00
img_check_pan(img, true);
2011-05-16 14:54:09 +01:00
2011-09-11 00:13:45 +01:00
if (ox != img->x || oy != img->y) {
2011-09-11 20:01:24 +01:00
img->dirty = true;
return true;
2011-09-11 00:13:45 +01:00
} else {
2011-09-11 20:01:24 +01:00
return false;
2011-09-11 00:13:45 +01:00
}
2011-05-16 14:54:09 +01:00
}
2013-08-10 14:55:18 +01:00
void img_rotate(img_t *img, degree_t d)
{
int i, ox, oy, tmp;
2011-01-26 13:42:10 +00:00
2011-02-25 11:08:12 +00:00
imlib_context_set_image(img->im);
2011-01-26 13:42:10 +00:00
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);
}
}
2013-08-10 14:55:18 +01:00
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;
2011-01-26 13:42:10 +00:00
2013-06-23 15:02:26 +01:00
tmp = img->w;
img->w = img->h;
img->h = tmp;
img->checkpan = true;
}
2011-09-11 20:01:24 +01:00
img->dirty = true;
2011-01-26 13:42:10 +00:00
}
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;
2015-10-28 19:59:48 +00:00
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]();
}
}
2012-05-06 12:02:34 +01:00
img->dirty = true;
}
void img_toggle_antialias(img_t *img)
{
2011-09-11 20:01:24 +01:00
img->aa = !img->aa;
2011-09-11 00:13:45 +01:00
imlib_context_set_image(img->im);
imlib_context_set_anti_alias(img->aa);
2011-09-11 20:01:24 +01:00
img->dirty = true;
}
2011-08-18 15:05:32 +01:00
2013-11-14 16:06:20 +00:00
bool img_change_gamma(img_t *img, int d)
{
2013-11-14 16:06:20 +00:00
/* d < 0: decrease gamma
* d = 0: reset gamma
* d > 0: increase gamma
*/
int gamma;
double range;
2013-11-14 16:06:20 +00:00
if (d == 0)
gamma = 0;
else
gamma = MIN(MAX(img->gamma + d, -GAMMA_RANGE), GAMMA_RANGE);
2013-11-14 16:06:20 +00:00
if (img->gamma != gamma) {
imlib_reset_color_modifier();
if (gamma != 0) {
range = gamma <= 0 ? 1.0 : GAMMA_MAX - 1.0;
imlib_modify_color_modifier_gamma(1.0 + gamma * (range / GAMMA_RANGE));
}
2013-11-14 16:06:20 +00:00
img->gamma = gamma;
img->dirty = true;
2013-11-14 16:06:20 +00:00
return true;
} else {
return false;
}
}
bool img_frame_goto(img_t *img, int n)
{
if (n < 0 || n >= img->multi.cnt || n == img->multi.sel)
2011-09-11 20:01:24 +01:00
return false;
2011-08-18 15:05:32 +01:00
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();
2011-09-11 20:01:24 +01:00
img->checkpan = true;
img->dirty = true;
2011-08-18 15:05:32 +01:00
2011-09-11 20:01:24 +01:00
return true;
2011-08-18 15:05:32 +01:00
}
bool img_frame_navigate(img_t *img, int d)
{
2015-10-28 19:59:48 +00:00
if (img->multi.cnt == 0 || d == 0)
2011-09-11 20:01:24 +01:00
return false;
2011-08-18 15:05:32 +01:00
d += img->multi.sel;
if (d < 0)
d = 0;
else if (d >= img->multi.cnt)
d = img->multi.cnt - 1;
return img_frame_goto(img, d);
}
2014-09-01 19:41:27 +01:00
bool img_frame_animate(img_t *img)
{
2015-10-28 19:59:48 +00:00
if (img->multi.cnt == 0)
2011-09-11 20:01:24 +01:00
return false;
2011-08-18 15:05:32 +01:00
2014-09-01 19:41:27 +01:00
if (img->multi.sel + 1 >= img->multi.cnt)
img_frame_goto(img, 0);
2014-09-01 19:41:27 +01:00
else
2011-08-18 15:05:32 +01:00
img_frame_goto(img, img->multi.sel + 1);
2014-09-01 19:41:27 +01:00
img->dirty = true;
return true;
2011-08-18 15:05:32 +01:00
}