nsxiv/commands.c
Berke Kocaoğlu 95bc9b463b add brightness and contrast (#396)
* Imlib2 supports modifying gamma, brightness and contrast directly
  while sxiv only supports gamma. Makes sense to extend it to brightness
  and contrast as well.

* Since color corrections need to be aware of each other, they have been
  refactored into one centralized function.

* This also makes the code more hackable as it makes it easier to add
  more color correction functions without them interfering with each
  other.

Co-authored-by: 0ion9 <finticemo@gmail.com>
Co-authored-by: NRK <nrk@disroot.org>
Reviewed-on: https://codeberg.org/nsxiv/nsxiv/pulls/396
Reviewed-by: NRK <nrk@disroot.org>
Reviewed-by: TAAPArthur <taaparthur@noreply.codeberg.org>
Co-authored-by: Berke Kocaoğlu <kberke@metu.edu.tr>
Co-committed-by: Berke Kocaoğlu <kberke@metu.edu.tr>
2022-12-22 11:21:40 +00:00

479 lines
8.9 KiB
C

/* 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"
#include "commands.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/wait.h>
#include <unistd.h>
extern img_t img;
extern tns_t tns;
extern win_t win;
static bool navigate_to(arg_t n)
{
if (n >= 0 && n < filecnt && n != fileidx) {
if (mode == MODE_IMAGE) {
load_image(n);
} else if (mode == MODE_THUMB) {
fileidx = n;
tns.dirty = true;
}
return true;
}
return false;
}
bool cg_quit(arg_t status)
{
unsigned int i;
if (options->to_stdout && markcnt > 0) {
for (i = 0; i < (unsigned int)filecnt; i++) {
if (files[i].flags & FF_MARK)
printf("%s%c", files[i].name, options->using_null ? '\0' : '\n');
}
}
exit(status);
return None; /* silence tcc warning */
}
bool cg_switch_mode(arg_t _)
{
if (mode == MODE_IMAGE) {
if (tns.thumbs == NULL)
tns_init(&tns, files, &filecnt, &fileidx, &win);
img_close(&img, false);
reset_timeout(reset_cursor);
if (img.ss.on) {
img.ss.on = false;
reset_timeout(slideshow);
}
tns.dirty = true;
mode = MODE_THUMB;
} else {
load_image(fileidx);
mode = MODE_IMAGE;
}
close_info();
open_info();
title_dirty = true;
return true;
}
bool cg_toggle_fullscreen(arg_t _)
{
win_toggle_fullscreen(&win);
/* redraw after next ConfigureNotify event */
set_timeout(redraw, TO_REDRAW_RESIZE, false);
if (mode == MODE_IMAGE)
img.checkpan = img.dirty = true;
else
tns.dirty = true;
return false;
}
bool cg_toggle_bar(arg_t _)
{
win_toggle_bar(&win);
if (mode == MODE_IMAGE)
img.checkpan = img.dirty = true;
else
tns.dirty = true;
if (win.bar.h > 0)
open_info();
else
close_info();
return true;
}
bool cg_prefix_external(arg_t _)
{
handle_key_handler(true);
return false;
}
bool cg_reload_image(arg_t _)
{
if (mode == MODE_IMAGE) {
load_image(fileidx);
} else {
win_set_cursor(&win, CURSOR_WATCH);
if (!tns_load(&tns, fileidx, true, false)) {
remove_file(fileidx, false);
tns.dirty = true;
}
}
return true;
}
bool cg_remove_image(arg_t _)
{
remove_file(fileidx, true);
if (mode == MODE_IMAGE)
load_image(fileidx);
else
tns.dirty = true;
return true;
}
bool cg_first(arg_t _)
{
return navigate_to(0);
}
bool cg_n_or_last(arg_t _)
{
int n = prefix != 0 && prefix - 1 < filecnt ? prefix - 1 : filecnt - 1;
return navigate_to(n);
}
bool cg_scroll_screen(arg_t dir)
{
if (mode == MODE_IMAGE)
return img_pan(&img, dir, -1);
else
return tns_scroll(&tns, dir, true);
}
bool cg_zoom(arg_t d)
{
if (mode == MODE_THUMB)
return tns_zoom(&tns, d);
else
return img_zoom(&img, d);
}
bool cg_toggle_image_mark(arg_t _)
{
return mark_image(fileidx, !(files[fileidx].flags & FF_MARK));
}
bool cg_reverse_marks(arg_t _)
{
int i;
for (i = 0; i < filecnt; i++) {
files[i].flags ^= FF_MARK;
markcnt += files[i].flags & FF_MARK ? 1 : -1;
}
if (mode == MODE_THUMB)
tns.dirty = true;
return true;
}
bool cg_mark_range(arg_t _)
{
int d = markidx < fileidx ? 1 : -1, end, i;
bool dirty = false, on = !!(files[markidx].flags & FF_MARK);
for (i = markidx + d, end = fileidx + d; i != end; i += d)
dirty |= mark_image(i, on);
return dirty;
}
bool cg_unmark_all(arg_t _)
{
int i;
for (i = 0; i < filecnt; i++)
files[i].flags &= ~FF_MARK;
markcnt = 0;
if (mode == MODE_THUMB)
tns.dirty = true;
return true;
}
bool cg_navigate_marked(arg_t n)
{
int d, i;
int new = fileidx;
if (prefix > 0)
n *= prefix;
d = n > 0 ? 1 : -1;
for (i = fileidx + d; n != 0 && i >= 0 && i < filecnt; i += d) {
if (files[i].flags & FF_MARK) {
n -= d;
new = i;
}
}
return navigate_to(new);
}
static bool change_color_modifier(arg_t d, int *target)
{
if (!img_change_color_modifier(&img, d * (prefix > 0 ? prefix : 1), target))
return false;
if (mode == MODE_THUMB)
tns.dirty = true;
return true;
}
bool cg_change_gamma(arg_t d)
{
return change_color_modifier(d, &img.gamma);
}
bool cg_change_brightness(arg_t d)
{
return change_color_modifier(d, &img.brightness);
}
bool cg_change_contrast(arg_t d)
{
return change_color_modifier(d, &img.contrast);
}
bool ci_navigate(arg_t n)
{
if (prefix > 0)
n *= prefix;
n += fileidx;
n = MAX(0, MIN(n, filecnt - 1));
if (n != fileidx) {
load_image(n);
return true;
} else {
return false;
}
}
bool ci_cursor_navigate(arg_t _)
{
return ci_navigate(nav_button() - 1);
}
bool ci_alternate(arg_t _)
{
load_image(alternate);
return true;
}
bool ci_navigate_frame(arg_t d)
{
if (prefix > 0)
d *= prefix;
return !img.multi.animate && img_frame_navigate(&img, d);
}
bool ci_toggle_animation(arg_t _)
{
bool dirty = false;
if (img.multi.cnt > 0) {
img.multi.animate = !img.multi.animate;
if (img.multi.animate) {
dirty = img_frame_animate(&img);
set_timeout(animate, img.multi.frames[img.multi.sel].delay, true);
} else {
reset_timeout(animate);
}
}
return dirty;
}
bool ci_scroll(arg_t dir)
{
return img_pan(&img, dir, prefix);
}
bool ci_scroll_to_center(arg_t _)
{
return img_pan_center(&img);
}
bool ci_scroll_to_edge(arg_t dir)
{
return img_pan_edge(&img, dir);
}
bool ci_drag(arg_t drag_mode)
{
int x, y, ox, oy;
float px, py;
XEvent e;
if ((int)(img.w * img.zoom) <= (int)win.w && (int)(img.h * img.zoom) <= (int)win.h)
return false;
win_set_cursor(&win, drag_mode == DRAG_ABSOLUTE ? CURSOR_DRAG_ABSOLUTE : CURSOR_DRAG_RELATIVE);
win_cursor_pos(&win, &x, &y);
ox = x;
oy = y;
while (true) {
if (drag_mode == DRAG_ABSOLUTE) {
px = MIN(MAX(0.0, x - win.w*0.1), win.w*0.8) / (win.w*0.8)
* (win.w - img.w * img.zoom);
py = MIN(MAX(0.0, y - win.h*0.1), win.h*0.8) / (win.h*0.8)
* (win.h - img.h * img.zoom);
} else {
px = img.x + x - ox;
py = img.y + y - oy;
}
if (img_pos(&img, px, py)) {
img_render(&img);
win_draw(&win);
}
XMaskEvent(win.env.dpy,
ButtonPressMask | ButtonReleaseMask | PointerMotionMask, &e);
if (e.type == ButtonPress || e.type == ButtonRelease)
break;
while (XCheckTypedEvent(win.env.dpy, MotionNotify, &e));
ox = x;
oy = y;
x = e.xmotion.x;
y = e.xmotion.y;
}
set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
reset_cursor();
return true;
}
bool ci_set_zoom(arg_t zl)
{
return img_zoom_to(&img, (prefix ? prefix : zl) / 100.0);
}
bool ci_fit_to_win(arg_t sm)
{
return img_fit_win(&img, sm);
}
bool ci_rotate(arg_t degree)
{
img_rotate(&img, degree);
return true;
}
bool ci_flip(arg_t dir)
{
img_flip(&img, dir);
return true;
}
bool ci_toggle_antialias(arg_t _)
{
img_toggle_antialias(&img);
return true;
}
bool ci_toggle_alpha(arg_t _)
{
img.alpha = !img.alpha;
img.dirty = true;
return true;
}
bool ci_slideshow(arg_t _)
{
if (prefix > 0) {
img.ss.on = true;
img.ss.delay = prefix * 10;
set_timeout(slideshow, img.ss.delay * 100, true);
} else if (img.ss.on) {
img.ss.on = false;
reset_timeout(slideshow);
} else {
img.ss.on = true;
}
return true;
}
bool ct_move_sel(arg_t dir)
{
bool dirty = tns_move_selection(&tns, dir, prefix);
if (dirty) {
close_info();
open_info();
}
return dirty;
}
bool ct_reload_all(arg_t _)
{
tns_free(&tns);
tns_init(&tns, files, &filecnt, &fileidx, &win);
tns.dirty = true;
return true;
}
bool ct_scroll(arg_t dir)
{
return tns_scroll(&tns, dir, false);
}
bool ct_drag_mark_image(arg_t _)
{
int sel;
if ((sel = tns_translate(&tns, xbutton_ev->x, xbutton_ev->y)) >= 0) {
XEvent e;
bool on = !(files[sel].flags & FF_MARK);
while (true) {
if (sel >= 0 && mark_image(sel, on))
redraw();
XMaskEvent(win.env.dpy,
ButtonPressMask | ButtonReleaseMask | PointerMotionMask, &e);
if (e.type == ButtonPress || e.type == ButtonRelease)
break;
while (XCheckTypedEvent(win.env.dpy, MotionNotify, &e));
sel = tns_translate(&tns, e.xbutton.x, e.xbutton.y);
}
}
return false;
}
bool ct_select(arg_t _)
{
int sel;
bool dirty = false;
static Time firstclick;
if ((sel = tns_translate(&tns, xbutton_ev->x, xbutton_ev->y)) >= 0) {
if (sel != fileidx) {
tns_highlight(&tns, fileidx, false);
tns_highlight(&tns, sel, true);
fileidx = sel;
firstclick = xbutton_ev->time;
dirty = true;
} else if (xbutton_ev->time - firstclick <= TO_DOUBLE_CLICK) {
mode = MODE_IMAGE;
set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
load_image(fileidx);
dirty = true;
} else {
firstclick = xbutton_ev->time;
}
}
return dirty;
}