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sxcs.c
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sxcs.c
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/*
* Copyright (C) 2022-2024 NRK and contributors.
*
* This file is part of sxcs.
*
* sxcs 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 3 of the License, or (at your option) any later
* version.
*
* sxcs 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 sxcs. If not, see <https://www.gnu.org/licenses/>.
*/
#define _POSIX_C_SOURCE 200112L /* NOLINT */
#include <errno.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <poll.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/cursorfont.h>
#include <X11/Xcursor/Xcursor.h>
/*
* macros
*/
#ifndef PROGNAME
#define PROGNAME "sxcs"
#endif
#define ARRLEN(X) (sizeof(X) / sizeof((X)[0]))
#define MAX(A, B) ((A) > (B) ? (A) : (B))
#define MIN(A, B) ((A) < (B) ? (A) : (B))
#define DIFF(A, B) ((A) > (B) ? (A) - (B) : (B) - (A))
#define UNUSED(X) ((void)(X))
/* not correct. but works fine for our usecase in this program */
#define ROUNDF(X) ((int)((X) + 0.50f))
#define R(X) ( ((ulong)(X) & 0xFF0000) >> 16 )
#define G(X) ( ((ulong)(X) & 0x00FF00) >> 8 )
#define B(X) ( ((ulong)(X) & 0x0000FF) >> 0 )
#define FILTER_SEQ_FROM_ARRAY(X) { X, ARRLEN(X) }
/* portable compiler attributes */
#ifndef __has_attribute
#define __has_attribute(X) (0)
#endif
#if __has_attribute(format)
#define ATTR_FMT(A, S, ARG) __attribute__ ((format (A, S, ARG)))
#else
#define ATTR_FMT(A, S, ARG)
#endif
#if __has_attribute(noreturn)
#define ATTR_NORETURN __attribute__ ((noreturn))
#else
#define ATTR_NORETURN
#endif
#ifdef __GNUC__
/* when debugging, use gcc/clang and compile with
* `-fsanitize=undefined -fsanitize-undefined-trap-on-error`
* it'll trap if an unreachable code-path is ever reached.
*/
#define ASSERT(X) ((X) ? (void)0 : __builtin_unreachable())
#else
#define ASSERT(X) ((void)0)
#endif
/*
* types
*/
typedef unsigned int uint;
typedef unsigned short ushort;
typedef unsigned long ulong;
typedef unsigned char uchar;
typedef struct { uchar *s; ptrdiff_t len; } Str;
enum output {
OUTPUT_NONE = 0,
OUTPUT_HEX = 1 << 0,
OUTPUT_RGB = 1 << 1,
OUTPUT_HSL = 1 << 2,
OUTPUT_ALL = OUTPUT_HEX | OUTPUT_RGB | OUTPUT_HSL
};
typedef struct {
ushort h; /* only 9bits needed */
uchar s; /* only 7bits needed */
uchar l; /* only 7bits needed */
} HSL;
typedef struct {
uint oneshot : 1;
uint quit_on_keypress : 1;
uint no_mag : 1;
uint keyboard : 1;
enum output fmt;
} Options;
typedef struct {
XImage *im;
uint x, y, w, h;
int cx, cy;
struct { uint w, h; } wanted; /* w, h if no clipping occurred */
} Image;
typedef void (*FilterFunc)(XcursorImage *img);
typedef void (*MagFunc)(XcursorImage *out, const Image *in);
typedef struct {
const FilterFunc *f;
uint len;
} FilterSeq;
/*
* function prototype
*/
/*
* zoom functions:
*
* The zoom functions are given a `XcursorImage` pointer where it must output
* the zoomed image. As input, an `Image` pointer is given.
* NOTE: In case of clipping (cursor at the edge of the screen) the input may
* not be of expected size. `in->{cx,cy}` are the coordinates of the cursor
* position and `in->wanted.{w,h}` are w/h if no clipping had occurred.
* so the zoom function must ensure that the middle of the output maps to the
* cx,cy of the input and it must fill any of the clipped area with transparent
* pixel (0xff000000).
*/
/* TODO: add bicubic scaling */
static void nearest_neighbour(XcursorImage *out, const Image *in);
/*
* filter functions:
*
* The filter functions are given a pointer to `XcursorImage` as input. There
* is no output, the functions can modify it's input as it wants.
*/
/* TODO: add pixels_grid */
static void square(XcursorImage *img);
static void xhair(XcursorImage *img);
static void grid(XcursorImage *img);
static void circle(XcursorImage *img);
/*
* static globals
*/
static struct {
Display *dpy;
Cursor cur;
uint grab_mask;
struct {
Window win;
uint w, h;
} root;
struct {
uint cur : 1;
uint ungrab_ptr : 1;
uint ungrab_kb : 1;
} valid;
} x11;
static XcursorImage *cursor_img;
static volatile sig_atomic_t sig_recieved;
#include "config.h"
static const FilterSeq *filter = &filter_default;
/*
* function implementation
*/
ATTR_NORETURN ATTR_FMT(printf, 1, 2)
static void
fatal(const char *fmt, ...)
{
char prefix[] = PROGNAME ": ";
va_list ap;
fflush(stdout);
fwrite(prefix, 1, sizeof prefix - 1, stderr);
va_start(ap, fmt);
if (fmt != NULL)
vfprintf(stderr, fmt, ap);
va_end(ap);
fwrite("\n", 1, 1, stderr);
exit(1);
}
static Str
str_from_cstr(char *s)
{
Str ret = {0};
for (ret.s = (uchar *)s; ret.s != NULL && ret.s[ret.len] != '\0'; ++ret.len) {}
return ret;
}
static int
str_eq(Str a, Str b)
{
ptrdiff_t n = -1;
ASSERT(a.len >= 0 && b.len >= 0);
if (a.len == b.len) {
for (n = 0; n < a.len && a.s[n] == b.s[n]; ++n) {}
}
return n == a.len;
}
static int
str_tok(Str *s, Str *t, uchar ch)
{
ptrdiff_t l = s->len;
ASSERT(l >= 0);
t->s = s->s;
for (t->len = 0; t->len < l && t->s[t->len] != ch; ++t->len) {}
s->s += t->len + (t->len < l);
s->len -= t->len + (t->len < l);
return l != 0;
}
static HSL
rgb_to_hsl(ulong col)
{
HSL ret = {0};
const int r = R(col);
const int g = G(col);
const int b = B(col);
const int max = MAX(MAX(r, g), b);
const int min = MIN(MIN(r, g), b);
const int ltmp = (int)(((max + min) * 500L) / 255L);
const int l = (ltmp / 10) + (ltmp % 10 >= 5);
/* should work even if long == 32bits */
long s = 0, h = 0;
if (max != min) {
const long d = max - min;
const long M = (max * 1000L) / 255, m = (min * 1000L) / 255;
if (l <= 50)
s = ((M - m) * 1000L) / (M + m);
else
s = ((M - m) * 1000L) / (2000L - M - m);
s = (s / 10) + (s % 10 >= 5);
if (max == r) {
h = ((g - b) * 1000L) / d + (g < b ? 6000L : 0L);
} else if (max == g) {
h = ((b - r) * 1000L) / d + 2000L;
} else {
h = ((r - g) * 1000L) / d + 4000L;
}
h *= 6;
h = (h / 100) + (h % 100 >= 50);
if (h < 0)
h += 360;
}
ASSERT(h >= 0 && h <= 360);
ret.h = (ushort)h;
ASSERT(l >= 0 && l <= 100);
ret.l = (uchar)l;
ASSERT(s >= 0 && s <= 100);
ret.s = (uchar)s;
return ret;
}
/*
* NOTE: calling XGetPixel is expensive. so manually extract the pixels
* instead. it *should* work fine, but only tested it on my system. so it's
* possible that this causes some problems, especially if the X server is
* running on some funny config.
*/
static ulong
ximg_pixel_get(const XImage *img, int x, int y)
{
const size_t off = ((size_t)y * (size_t)img->bytes_per_line) + ((size_t)x * 4);
const uchar *const p = (uchar *)img->data + off;
ASSERT(x >= 0); ASSERT(y >= 0);
if (img->byte_order == MSBFirst) {
return (ulong)p[0] << 24 |
(ulong)p[1] << 16 |
(ulong)p[2] << 8 |
(ulong)p[3] << 0;
} else {
return (ulong)p[3] << 24 |
(ulong)p[2] << 16 |
(ulong)p[1] << 8 |
(ulong)p[0] << 0;
}
}
static ulong
get_pixel(int x, int y)
{
ulong ret;
if (cursor_img != NULL) {
uint m = cursor_img->height / 2;
ret = cursor_img->pixels[m * cursor_img->width + m];
ret &= 0x00ffffff; /* cut off the alpha */
} else {
XImage *im = XGetImage(x11.dpy, x11.root.win, x, y, 1, 1, AllPlanes, ZPixmap);
if (im == NULL)
fatal("failed to get image");
ret = ximg_pixel_get(im, 0, 0);
XDestroyImage(im);
}
return ret;
}
static void
print_color(int x, int y, enum output fmt)
{
ulong pix;
if (fmt == OUTPUT_NONE)
return;
pix = get_pixel(x, y);
if (fmt & OUTPUT_HEX)
fprintf(stdout, "hex:\t#%.6lX\t", pix);
if (fmt & OUTPUT_RGB)
fprintf(stdout, "rgb:\t%lu %lu %lu\t", R(pix), G(pix), B(pix));
if (fmt & OUTPUT_HSL) {
HSL tmp = rgb_to_hsl(pix);
fprintf(stdout, "hsl:\t%u %u %u\t", tmp.h, tmp.s, tmp.l);
}
fwrite("\n", 1, 1, stdout);
fflush(stdout);
if (ferror(stdout))
fatal("writing to stdout failed");
}
ATTR_NORETURN
static void
usage(void)
{
char s[] =
"usage: "PROGNAME" [options]\n"
"See the manpage for more details.\n"
;
fwrite(s, 1, sizeof s - 1, stderr);
exit(1);
}
ATTR_NORETURN
static void
version(void)
{
char s[] =
PROGNAME" v1.1.0\n\n"
"Copyright (C) 2022-2024 NRK and contributors.\n"
"License: GPLv3+ <https://gnu.org/licenses/gpl.html>.\n"
"Upstream: <https://codeberg.org/NRK/sxcs>\n"
;
fwrite(s, 1, sizeof s - 1, stderr);
exit(1);
}
static void
filter_parse(Str arg)
{
static FilterFunc f_buf[16];
static FilterSeq fs_buf = FILTER_SEQ_FROM_ARRAY(f_buf);
Str tok;
uint i, f_len = 0;
if (arg.len == 0)
fatal("--mag-filters: no argument provided");
while (str_tok(&arg, &tok, ',')) {
int found_match = 0;
for (i = 0; i < ARRLEN(FILTER_TABLE); ++i) {
if (str_eq(tok, FILTER_TABLE[i].str)) {
if (f_len >= ARRLEN(f_buf))
fatal("--mag-filters: too many filters");
f_buf[f_len++] = FILTER_TABLE[i].f;
found_match = 1;
break;
}
}
if (!found_match)
fatal("invalid filter `%.*s`", (int)tok.len, tok.s);
}
ASSERT(arg.len == 0);
fs_buf.len = f_len;
filter = &fs_buf;
}
/* inspired by https://github.com/skeeto/scratch/blob/master/parsers/imgo.c */
typedef struct { char **argv, *cur, *flag; int len; } OptCtx;
#define OPT(O, SO, LO) ( ((O)->len == 1 && (SO) != 0x0 && (O)->flag[0] == (SO)) || \
((LO) != 0 && (O)->len-1 == sizeof(LO)-1 && memcmp(LO, (O)->flag+1, (O)->len-1) == 0) )
static int
opt_next(OptCtx *o)
{
if (o->cur == NULL || *o->cur == '\0') {
if ((o->cur = *o->argv++) == NULL || *o->cur++ != '-' || *o->cur == '\0')
return --o->argv, 0;
if (*o->cur == '-') {
o->flag = o->cur; o->cur = NULL;
return o->len = (int)strlen(o->flag);
}
}
o->flag = o->cur++;
return o->len = 1;
}
static Options
opt_parse(int argc, char *argv[])
{
Options ret = {0};
int fmt_default = 1;
OptCtx o[1] = {0};
for (o->argv = argv + (argc > 0); opt_next(o);) { /* NOLINTBEGIN(*misleading-indentation) */
if (OPT(o, 0x0, "rgb")) ret.fmt |= OUTPUT_RGB;
else if (OPT(o, 0x0, "hex")) ret.fmt |= OUTPUT_HEX;
else if (OPT(o, 0x0, "hsl")) ret.fmt |= OUTPUT_HSL;
else if (OPT(o, 0x0, "color-none")) ret.fmt = fmt_default = 0;
else if (OPT(o, 'o', "one-shot")) ret.oneshot = 1;
else if (OPT(o, 'q', "quit-on-keypress")) ret.quit_on_keypress = 1;
else if (OPT(o, 'k', "keyboard")) ret.keyboard = 1;
else if (OPT(o, 0x0, "mag-none")) ret.no_mag = 1;
else if (OPT(o, 0x0, "mag-filters")) filter_parse(str_from_cstr(*o->argv++));
else if (OPT(o, 'h', "help")) usage();
else if (OPT(o, 0x0, "version")) version();
else fatal("unknown argument `-%.*s`", (int)o->len, o->flag);
} /* NOLINTEND(*misleading-indentation) */
if (*o->argv)
fatal("excess argument: `%s`", *o->argv);
if (ret.fmt == OUTPUT_NONE && fmt_default)
ret.fmt = OUTPUT_DEFAULT;
if (ret.quit_on_keypress && ret.keyboard)
fatal("--quit-on-keypress and --keyboard cannot be enabled at the same time");
return ret;
}
static void
nearest_neighbour(XcursorImage *out, const Image *in)
{
uint x, y;
float ocy = (float)out->height / 2.0f;
float ocx = (float)out->width / 2.0f;
float icy = (float)in->wanted.h / 2.0f;
float icx = (float)in->wanted.w / 2.0f;
for (y = 0; y < out->height; ++y) {
for (x = 0; x < out->width; ++x) {
float oy = ((float)y - ocy) / ocy;
float ox = ((float)x - ocx) / ocx;
int iy = ROUNDF((float)in->cy + (icy * oy));
int ix = ROUNDF((float)in->cx + (icx * ox));
ulong tmp;
if ((iy < 0 || iy >= (int)in->h) || (ix < 0 || ix >= (int)in->w))
tmp = 0xff000000;
else
tmp = ximg_pixel_get(in->im, ix, iy) | 0xff000000;
out->pixels[y * out->width + x] = (XcursorPixel)tmp;
}
}
}
static void
square(XcursorImage *img)
{
size_t i, k;
const uint b = SQUARE_WIDTH;
i = 0;
while (i < img->width * b + b) /* draw the top border + 1 left side */
img->pixels[i++] = SQUARE_COLOR;
do {
i += img->width - b * 2; /* skip the mid */
for (k = 0; k < b*2; ++k)
img->pixels[i++] = SQUARE_COLOR;
} while (i < (img->height - b) * img->width);
while (i < img->width * img->height) /* draw the rest */
img->pixels[i++] = SQUARE_COLOR;
}
static void
xhair(XcursorImage *img)
{
uint x, y;
const uint c = img->height / 2;
const uint b = XHAIR_SIZE;
const uint bw = XHAIR_BORDER_WIDTH ;
for (y = c - b; y <= c + b; ++y) {
for (x = c - b; x <= c + b; ++x) {
if (DIFF(x, c) > b - bw || DIFF(y, c) > b - bw)
img->pixels[y * img->width + x] = XHAIR_COLOR;
}
}
}
static void
grid(XcursorImage *img)
{
uint x, y;
const uint z = GRID_SIZE;
const uint c = (img->height / 2) + (z / 2);
for (y = 0; y < img->height; ++y) {
if (DIFF(c, y) % z == 0) {
for (x = 0; x < img->width; ++x)
img->pixels[y * img->width + x] = GRID_COLOR;
} else for (x = c % z; x < img->width; x += z) {
img->pixels[y * img->width + x] = GRID_COLOR;
}
}
}
static void
four_point_draw(XcursorImage *img, uint x, uint y, XcursorPixel col) /* naming is hard */
{
uint w = img->width, h = img->height;
ASSERT(x <= w/2); ASSERT(y <= h/2);
img->pixels[y * w + x] = col;
img->pixels[y * w + (w - x - 1)] = col;
img->pixels[(h - y - 1) * w + x] = col;
img->pixels[(h - y - 1) * w + (w - x - 1)] = col;
}
/* TODO: reduce jaggedness */
static void
circle(XcursorImage *img)
{
uint x, y, h = img->height, w = img->width;
uint r = CIRCLE_RADIUS;
uint br = r - CIRCLE_WIDTH;
uint c = h / 2;
for (y = 0; y < h / 2 + (h & 1); ++y) {
for (x = 0; x < w / 2 + (w & 1); ++x) {
uint tx = c - x;
uint ty = c - y;
uint x2y2 = (tx * tx) + (ty * ty);
if (x2y2 > (r * r)) { /* outside the circle border */
if (CIRCLE_TRANSPARENT_OUTSIDE)
four_point_draw(img, x, y, 0x0);
} else if (x2y2 > (br * br)) { /* inside the circle border */
four_point_draw(img, x, y, CIRCLE_COLOR);
} else { /* inside the circle, nothing to do. move on to the next y */
break;
}
}
}
}
static void
magnify(const int x, const int y)
{
const uint c = (uint)((float)MAG_SIZE / MAG_FACTOR);
const int off = c / 2;
uint i;
Image img;
Cursor new_cur;
img.x = (uint)MAX(0, x - off);
img.y = (uint)MAX(0, y - off);
img.w = MIN(c, x11.root.w - img.x);
img.h = MIN(c, x11.root.h - img.y);
img.cx = x - (int)img.x;
img.cy = y - (int)img.y;
img.wanted.w = img.wanted.h = c;
/* TODO: look into Shm extension to reduce allocation overhead. */
img.im = XGetImage(
x11.dpy, x11.root.win, (int)img.x, (int)img.y, img.w, img.h,
AllPlanes, ZPixmap
);
if (img.im == NULL)
fatal("failed to get image");
if (img.im->bits_per_pixel != 32 ||
img.im->bytes_per_line != (img.im->width * 4) ||
!(img.im->depth == 24 || img.im->depth == 32))
{ /* ximg_pixel_get() depends on these */
fatal("unexpected XImage format");
}
mag_func(cursor_img, &img);
XDestroyImage(img.im);
for (i = 0; i < filter->len; ++i)
filter->f[i](cursor_img);
new_cur = XcursorImageLoadCursor(x11.dpy, cursor_img);
if (x11.valid.cur)
XFreeCursor(x11.dpy, x11.cur);
x11.cur = new_cur;
x11.valid.cur = 1;
XChangeActivePointerGrab(x11.dpy, x11.grab_mask, x11.cur, CurrentTime);
}
static void
sighandler(int sig)
{
sig_recieved = sig_recieved ? sig_recieved : sig;
}
extern int
main(int argc, char *argv[])
{
Options opt;
struct { int x, y, valid; } old = {0};
XEvent ev;
Bool queued;
int npending;
opt = opt_parse(argc, argv);
if ((x11.dpy = XOpenDisplay(NULL)) == NULL)
fatal("failed to open x11 display");
{
XWindowAttributes tmp;
x11.root.win = DefaultRootWindow(x11.dpy);
if (XGetWindowAttributes(x11.dpy, x11.root.win, &tmp) == 0)
fatal("failed to get root window attributes");
x11.root.h = (uint)tmp.height;
x11.root.w = (uint)tmp.width;
}
{
XVisualInfo q = {0}, *r;
int d, dummy;
q.visualid = XVisualIDFromVisual(DefaultVisual(x11.dpy, DefaultScreen(x11.dpy)));
if ((r = XGetVisualInfo(x11.dpy, VisualIDMask, &q, &dummy)) == NULL)
fatal("failed to obtain visual info");
d = r->depth;
XFree(r);
if (d < 24)
fatal("X server does not support truecolor");
}
if (opt.no_mag) {
x11.cur = XCreateFontCursor(x11.dpy, XC_tcross);
x11.valid.cur = 1;
} else {
cursor_img = XcursorImageCreate(MAG_SIZE, MAG_SIZE);
if (cursor_img == NULL)
fatal("failed to create cursor image");
cursor_img->xhot = cursor_img->yhot = MAG_SIZE / 2;
}
if (opt.quit_on_keypress || opt.keyboard) {
/* when launched via dwm keybinding, it fails the grab since
* dwm has it grabbed already. listen for FocusChangeMask and
* keep retrying. */
int res;
XSelectInput(x11.dpy, x11.root.win, FocusChangeMask);
do {
res = XGrabKeyboard(
x11.dpy, x11.root.win, 0,
GrabModeAsync, GrabModeAsync, CurrentTime
);
XNextEvent(x11.dpy, &ev);
} while (res == AlreadyGrabbed);
XSelectInput(x11.dpy, x11.root.win, 0x0);
x11.valid.ungrab_kb = res == GrabSuccess;
if (!x11.valid.ungrab_kb)
fatal("failed to grab keyboard");
}
{
int tmp;
x11.grab_mask = ButtonPressMask | PointerMotionMask;
tmp = XGrabPointer(
x11.dpy, x11.root.win, 0, x11.grab_mask, GrabModeAsync,
GrabModeAsync, x11.root.win, x11.cur, CurrentTime
);
x11.valid.ungrab_ptr = tmp == GrabSuccess;
if (!x11.valid.ungrab_ptr)
fatal("failed to grab cursor");
}
{
int i, sigs[] = { SIGINT, SIGTERM, SIGKILL /* one can try */ };
for (i = 0; i < (int)ARRLEN(sigs); ++i)
signal(sigs[i], sighandler);
}
for (queued = False, npending = 0; 1;) {
Bool pending;
struct pollfd pfd;
pfd.fd = ConnectionNumber(x11.dpy);
pfd.events = POLLIN;
pending = queued || npending > 0 || (npending = XPending(x11.dpy)) > 0 ||
poll(&pfd, 1, MAX_FRAME_TIME) > 0;
if (sig_recieved)
exit(128 + sig_recieved);
if (!pending) {
if (!opt.no_mag && old.valid)
magnify(old.x, old.y);
continue;
}
if (!queued) {
XNextEvent(x11.dpy, &ev);
--npending;
}
queued = False;
switch (ev.type) {
case ButtonPress:
switch (ev.xbutton.button) {
case Button1:
print_color(ev.xbutton.x_root, ev.xbutton.y_root, opt.fmt);
if (opt.oneshot)
goto out;
break;
case Button4:
MAG_FACTOR *= MAG_STEP;
break;
case Button5:
MAG_FACTOR = MAX(1.1f, MAG_FACTOR / MAG_STEP);
break;
default:
goto out;
break;
}
break;
case MotionNotify:
if (opt.no_mag)
break;
old.x = ev.xmotion.x_root;
old.y = ev.xmotion.y_root;
old.valid = 1;
while (npending > 0 || (npending = XPending(x11.dpy)) > 0) {
XNextEvent(x11.dpy, &ev);
--npending;
if (ev.type == MotionNotify) { /* don't act on stale events */
old.x = ev.xmotion.x_root;
old.y = ev.xmotion.y_root;
} else {
queued = True;
break;
}
}
magnify(old.x, old.y);
break;
case KeyPress: {
KeySym k = None;
int x = ev.xkey.x_root, y = ev.xkey.y_root;
int delta = (ev.xkey.state & ControlMask) ? 1 :
((ev.xkey.state & ShiftMask) ? 128 : 16);
if (opt.quit_on_keypress)
goto out;
if (opt.keyboard) {
char junk;
XLookupString(&ev.xkey, &junk, 1, &k, NULL);
}
switch (k) {
case XK_h: case XK_H: case XK_Left: x -= delta; break;
case XK_l: case XK_L: case XK_Right: x += delta; break;
case XK_k: case XK_K: case XK_Up: y -= delta; break;
case XK_j: case XK_J: case XK_Down: y += delta; break;
case XK_q: case XK_Q: case XK_Escape: goto out; break;
case XK_minus: case XK_KP_Subtract:
MAG_FACTOR = MAX(1.1f, MAG_FACTOR / MAG_STEP);
break;
case XK_plus: case XK_KP_Add:
MAG_FACTOR *= MAG_STEP;
break;
case XK_space:
print_color(ev.xkey.x_root, ev.xkey.y_root, opt.fmt);
if (opt.oneshot)
goto out;
break;
}
if (x != ev.xkey.x_root || y != ev.xkey.y_root)
XWarpPointer(x11.dpy, None, x11.root.win, 0, 0, 0, 0, x, y);
} break;
default:
break;
}
}
out:
#ifdef DEBUG
if (x11.valid.ungrab_kb)
XUngrabKeyboard(x11.dpy, CurrentTime);
if (x11.valid.ungrab_ptr)
XUngrabPointer(x11.dpy, CurrentTime);
if (cursor_img != NULL)
XcursorImageDestroy(cursor_img);
if (x11.valid.cur)
XFreeCursor(x11.dpy, x11.cur);
#endif
if (x11.dpy != NULL)
XCloseDisplay(x11.dpy);
return 0;
}