picom/src/config.c

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// SPDX-License-Identifier: MIT
// Copyright (c) 2011-2013, Christopher Jeffrey
// Copyright (c) 2013 Richard Grenville <pyxlcy@gmail.com>
#include <math.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <ctype.h>
#include <xcb/render.h> // for xcb_render_fixed_t, XXX
#include "compiler.h"
#include "common.h"
#include "utils.h"
#include "c2.h"
#include "string_utils.h"
#include "log.h"
#include "region.h"
#include "types.h"
#include "kernel.h"
#include "win.h"
#include "config.h"
/**
* Parse a long number.
*/
bool
parse_long(const char *s, long *dest) {
const char *endptr = NULL;
long val = strtol(s, (char **) &endptr, 0);
if (!endptr || endptr == s) {
log_error("Invalid number: %s", s);
return false;
}
while (isspace(*endptr))
++endptr;
if (*endptr) {
log_error("Trailing characters: %s", s);
return false;
}
*dest = val;
return true;
}
/**
* Parse a floating-point number in from a string,
* also strips the trailing space and comma after the number.
*
* @param[in] src string to parse
* @param[out] dest return the number parsed from the string
* @return pointer to the last character parsed
*/
const char *
parse_readnum(const char *src, double *dest) {
const char *pc = NULL;
double val = strtod_simple(src, &pc);
if (!pc || pc == src) {
log_error("No number found: %s", src);
return src;
}
while (*pc && (isspace(*pc) || *pc == ',')) {
++pc;
}
*dest = val;
return pc;
}
/**
* Parse a matrix.
*
* @param[in] src the blur kernel string
* @param[out] endptr return where the end of kernel is in the string
* @param[out] hasneg whether the kernel has negative values
*/
conv *
parse_blur_kern(const char *src, const char **endptr, bool *hasneg) {
int width = 0, height = 0;
*hasneg = false;
const char *pc = NULL;
// Get matrix width and height
double val = 0.0;
if (src == (pc = parse_readnum(src, &val)))
goto err1;
src = pc;
width = val;
if (src == (pc = parse_readnum(src, &val)))
goto err1;
src = pc;
height = val;
// Validate matrix width and height
if (width <= 0 || height <= 0) {
log_error("Blue kernel width/height can't be negative.");
goto err1;
}
if (!(width % 2 && height % 2)) {
log_error("Blur kernel width/height must be odd.");
goto err1;
}
if (width > 16 || height > 16)
log_warn("Blur kernel width/height too large, may slow down"
"rendering, and/or consume lots of memory");
// Allocate memory
conv *matrix = cvalloc(sizeof(conv) + width * height * sizeof(double));
// Read elements
int skip = height / 2 * width + width / 2;
for (int i = 0; i < width * height; ++i) {
// Ignore the center element
if (i == skip) {
matrix->data[i] = 0;
continue;
}
if (src == (pc = parse_readnum(src, &val))) {
goto err2;
}
src = pc;
if (val < 0) {
*hasneg = true;
}
matrix->data[i] = val;
}
// Detect trailing characters
for (;*pc && *pc != ';'; pc++) {
if (!isspace(*pc) && *pc != ',') {
// TODO isspace is locale aware, be careful
log_error("Trailing characters in blur kernel string.");
goto err2;
}
}
// Jump over spaces after ';'
if (*pc == ';') {
pc++;
while (*pc && isspace(*pc)) {
++pc;
}
}
// Require an end of string if endptr is not provided, otherwise
// copy end pointer to endptr
if (endptr) {
*endptr = pc;
} else if (*pc) {
log_error("Only one blur kernel expected.");
goto err2;
}
// Fill in width and height
matrix->w = width;
matrix->h = height;
return matrix;
err2:
free(matrix);
err1:
return NULL;
}
/**
* Parse a list of convolution kernels.
*
* @param[in] src string to parse
* @param[out] dest pointer to an array of kernels, must points to an array
* of `max` elements.
* @param[in] max maximum number of kernels supported
* @param[out] hasneg whether any of the kernels have negative values
* @return if the `src` string is a valid kernel list string
*/
bool
parse_blur_kern_lst(const char *src, conv **dest, int max, bool *hasneg) {
// TODO just return a predefined kernels, not parse predefined strings...
static const struct {
const char *name;
const char *kern_str;
} CONV_KERN_PREDEF[] = {
{ "3x3box", "3,3,1,1,1,1,1,1,1,1," },
{ "5x5box", "5,5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1," },
{ "7x7box", "7,7,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1," },
{ "3x3gaussian", "3,3,0.243117,0.493069,0.243117,0.493069,0.493069,0.243117,0.493069,0.243117," },
{ "5x5gaussian", "5,5,0.003493,0.029143,0.059106,0.029143,0.003493,0.029143,0.243117,0.493069,0.243117,0.029143,0.059106,0.493069,0.493069,0.059106,0.029143,0.243117,0.493069,0.243117,0.029143,0.003493,0.029143,0.059106,0.029143,0.003493," },
{ "7x7gaussian", "7,7,0.000003,0.000102,0.000849,0.001723,0.000849,0.000102,0.000003,0.000102,0.003493,0.029143,0.059106,0.029143,0.003493,0.000102,0.000849,0.029143,0.243117,0.493069,0.243117,0.029143,0.000849,0.001723,0.059106,0.493069,0.493069,0.059106,0.001723,0.000849,0.029143,0.243117,0.493069,0.243117,0.029143,0.000849,0.000102,0.003493,0.029143,0.059106,0.029143,0.003493,0.000102,0.000003,0.000102,0.000849,0.001723,0.000849,0.000102,0.000003," },
{ "9x9gaussian", "9,9,0.000000,0.000000,0.000001,0.000006,0.000012,0.000006,0.000001,0.000000,0.000000,0.000000,0.000003,0.000102,0.000849,0.001723,0.000849,0.000102,0.000003,0.000000,0.000001,0.000102,0.003493,0.029143,0.059106,0.029143,0.003493,0.000102,0.000001,0.000006,0.000849,0.029143,0.243117,0.493069,0.243117,0.029143,0.000849,0.000006,0.000012,0.001723,0.059106,0.493069,0.493069,0.059106,0.001723,0.000012,0.000006,0.000849,0.029143,0.243117,0.493069,0.243117,0.029143,0.000849,0.000006,0.000001,0.000102,0.003493,0.029143,0.059106,0.029143,0.003493,0.000102,0.000001,0.000000,0.000003,0.000102,0.000849,0.001723,0.000849,0.000102,0.000003,0.000000,0.000000,0.000000,0.000001,0.000006,0.000012,0.000006,0.000001,0.000000,0.000000," },
{ "11x11gaussian", "11,11,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000001,0.000006,0.000012,0.000006,0.000001,0.000000,0.000000,0.000000,0.000000,0.000000,0.000003,0.000102,0.000849,0.001723,0.000849,0.000102,0.000003,0.000000,0.000000,0.000000,0.000001,0.000102,0.003493,0.029143,0.059106,0.029143,0.003493,0.000102,0.000001,0.000000,0.000000,0.000006,0.000849,0.029143,0.243117,0.493069,0.243117,0.029143,0.000849,0.000006,0.000000,0.000000,0.000012,0.001723,0.059106,0.493069,0.493069,0.059106,0.001723,0.000012,0.000000,0.000000,0.000006,0.000849,0.029143,0.243117,0.493069,0.243117,0.029143,0.000849,0.000006,0.000000,0.000000,0.000001,0.000102,0.003493,0.029143,0.059106,0.029143,0.003493,0.000102,0.000001,0.000000,0.000000,0.000000,0.000003,0.000102,0.000849,0.001723,0.000849,0.000102,0.000003,0.000000,0.000000,0.000000,0.000000,0.000000,0.000001,0.000006,0.000012,0.000006,0.000001,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000," },
};
*hasneg = false;
2018-08-22 21:25:40 +08:00
for (unsigned int i = 0;
i < sizeof(CONV_KERN_PREDEF) / sizeof(CONV_KERN_PREDEF[0]); ++i) {
if (!strcmp(CONV_KERN_PREDEF[i].name, src))
return parse_blur_kern_lst(CONV_KERN_PREDEF[i].kern_str, dest, max, hasneg);
}
int i = 0;
const char *pc = src;
// Free old kernels
for (i = 0; i < max; ++i) {
free(dest[i]);
dest[i] = NULL;
}
// Continue parsing until the end of source string
i = 0;
while (pc && *pc && i < max - 1) {
bool tmp_hasneg;
dest[i] = parse_blur_kern(pc, &pc, &tmp_hasneg);
if (!dest[i]) {
return false;
}
i++;
*hasneg |= tmp_hasneg;
}
if (i > 1) {
log_warn("You are seeing this message because your are using multipassblur. Please "
"report an issue to us so we know multipass blur is actually been used. "
"Otherwise it might be removed in future releases");
}
if (*pc) {
log_error("Too many blur kernels!");
return false;
}
return true;
}
/**
* Parse a X geometry.
*
* ps->root_width and ps->root_height must be valid
*/
bool
parse_geometry(session_t *ps, const char *src, region_t *dest) {
pixman_region32_clear(dest);
if (!src)
return true;
if (!ps->root_width || !ps->root_height)
return true;
geometry_t geom = { .wid = ps->root_width, .hei = ps->root_height, .x = 0, .y = 0 };
long val = 0L;
char *endptr = NULL;
src = skip_space(src);
if (!*src)
goto parse_geometry_end;
// Parse width
// Must be base 10, because "0x0..." may appear
if (!('+' == *src || '-' == *src)) {
val = strtol(src, &endptr, 10);
assert(endptr);
if (src != endptr) {
geom.wid = val;
if (geom.wid < 0) {
log_error("Invalid width: %s", src);
return false;
}
src = endptr;
}
src = skip_space(src);
}
// Parse height
if ('x' == *src) {
++src;
val = strtol(src, &endptr, 10);
assert(endptr);
if (src != endptr) {
geom.hei = val;
if (geom.hei < 0) {
log_error("Invalid height: %s", src);
return false;
}
src = endptr;
}
src = skip_space(src);
}
// Parse x
if ('+' == *src || '-' == *src) {
val = strtol(src, &endptr, 10);
if (endptr && src != endptr) {
geom.x = val;
if (*src == '-')
geom.x += ps->root_width - geom.wid;
src = endptr;
}
src = skip_space(src);
}
// Parse y
if ('+' == *src || '-' == *src) {
val = strtol(src, &endptr, 10);
if (endptr && src != endptr) {
geom.y = val;
if (*src == '-')
geom.y += ps->root_height - geom.hei;
src = endptr;
}
src = skip_space(src);
}
if (*src) {
log_error("Trailing characters: %s", src);
return false;
}
parse_geometry_end:
pixman_region32_union_rect(dest, dest, geom.x, geom.y, geom.wid, geom.hei);
return true;
}
/**
* Parse a list of opacity rules.
*/
bool parse_rule_opacity(c2_lptr_t **res, const char *src) {
// Find opacity value
char *endptr = NULL;
long val = strtol(src, &endptr, 0);
if (!endptr || endptr == src) {
log_error("No opacity specified: %s", src);
return false;
}
if (val > 100 || val < 0) {
log_error("Opacity %ld invalid: %s", val, src);
return false;
}
// Skip over spaces
while (*endptr && isspace(*endptr))
++endptr;
if (':' != *endptr) {
log_error("Opacity terminator not found: %s", src);
return false;
}
++endptr;
// Parse pattern
// I hope 1-100 is acceptable for (void *)
return c2_parse(res, endptr, (void *) val);
}
/**
* Add a pattern to a condition linked list.
*/
bool
condlst_add(c2_lptr_t **pcondlst, const char *pattern) {
if (!pattern)
return false;
if (!c2_parse(pcondlst, pattern, NULL))
exit(1);
return true;
}
void set_default_winopts(options_t *opt, win_option_mask_t *mask, bool shadow_enable, bool fading_enable) {
// Apply default wintype options.
if (!mask[WINTYPE_DESKTOP].shadow) {
// Desktop windows are always drawn without shadow by default.
mask[WINTYPE_DESKTOP].shadow = true;
opt->wintype_option[WINTYPE_DESKTOP].shadow = false;
}
// Focused/unfocused state only apply to a few window types, all other windows
// are always considered focused.
const wintype_t nofocus_type[] =
{ WINTYPE_UNKNOWN, WINTYPE_NORMAL, WINTYPE_UTILITY };
for (unsigned long i = 0; i < ARR_SIZE(nofocus_type); i++) {
if (!mask[nofocus_type[i]].focus) {
mask[nofocus_type[i]].focus = true;
opt->wintype_option[nofocus_type[i]].focus = false;
}
}
for (unsigned long i = 0; i < NUM_WINTYPES; i++) {
if (!mask[i].shadow) {
mask[i].shadow = true;
opt->wintype_option[i].shadow = shadow_enable;
}
if (!mask[i].fade) {
mask[i].fade = true;
opt->wintype_option[i].fade = fading_enable;
}
if (!mask[i].focus) {
mask[i].focus = true;
opt->wintype_option[i].focus = true;
}
if (!mask[i].full_shadow) {
mask[i].full_shadow = true;
opt->wintype_option[i].full_shadow = false;
}
if (!mask[i].redir_ignore) {
mask[i].redir_ignore = true;
opt->wintype_option[i].redir_ignore = false;
}
if (!mask[i].opacity) {
mask[i].opacity = true;
// Opacity is not set to a concrete number here because the opacity logic
// is complicated, and needs an "unset" state
opt->wintype_option[i].opacity = NAN;
}
}
}
char *parse_config(options_t *opt, const char *config_file,
bool *shadow_enable, bool *fading_enable, bool *hasneg,
win_option_mask_t *winopt_mask) {
char *ret = NULL;
#ifdef CONFIG_LIBCONFIG
ret = parse_config_libconfig(opt, config_file, shadow_enable, fading_enable,
hasneg, winopt_mask);
#endif
return ret;
}