352 lines
9.3 KiB
C
352 lines
9.3 KiB
C
#ifndef _POSIX_C_SOURCE
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#define _POSIX_C_SOURCE 200809L
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#endif
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#include <stdlib.h>
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#include <limits.h>
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#include <getopt.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/param.h>
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#include <wlr/config.h>
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#include <wlr/util/log.h>
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#include <wlr/types/wlr_box.h>
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#include "support/config.h"
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#include "shared.h"
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#include "ini.h"
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static void usage(const char *name, int ret) {
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fprintf(stderr,
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"usage: %s [-C <FILE>]\n"
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"\n"
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" -C <FILE> Path to the configuration file\n"
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" (default: wlr-example.ini).\n"
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" See `rootston/rootston.ini.example` for config\n"
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" file documentation.\n", name);
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exit(ret);
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}
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static struct wlr_box *parse_geometry(const char *str) {
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// format: {width}x{height}+{x}+{y}
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if (strlen(str) > 255) {
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wlr_log(L_ERROR, "cannot parse geometry string, too long");
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return NULL;
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}
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char *buf = strdup(str);
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struct wlr_box *box = calloc(1, sizeof(struct wlr_box));
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bool has_width = false;
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bool has_height = false;
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bool has_x = false;
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bool has_y = false;
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char *pch = strtok(buf, "x+");
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while (pch != NULL) {
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errno = 0;
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char *endptr;
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long val = strtol(pch, &endptr, 0);
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if ((errno == ERANGE && (val == LONG_MAX || val == LONG_MIN)) ||
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(errno != 0 && val == 0)) {
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goto invalid_input;
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}
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if (endptr == pch) {
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goto invalid_input;
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}
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if (!has_width) {
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box->width = val;
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has_width = true;
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} else if (!has_height) {
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box->height = val;
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has_height = true;
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} else if (!has_x) {
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box->x = val;
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has_x = true;
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} else if (!has_y) {
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box->y = val;
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has_y = true;
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} else {
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break;
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}
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pch = strtok(NULL, "x+");
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}
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if (!has_width || !has_height) {
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goto invalid_input;
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}
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free(buf);
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return box;
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invalid_input:
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wlr_log(L_ERROR, "could not parse geometry string: %s", str);
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free(buf);
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free(box);
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return NULL;
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}
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static const char *output_prefix = "output:";
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static const char *device_prefix = "device:";
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static int config_ini_handler(void *user, const char *section, const char *name,
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const char *value) {
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struct example_config *config = user;
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if (strncmp(output_prefix, section, strlen(output_prefix)) == 0) {
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const char *output_name = section + strlen(output_prefix);
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struct output_config *oc;
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bool found = false;
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wl_list_for_each(oc, &config->outputs, link) {
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if (strcmp(oc->name, output_name) == 0) {
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found = true;
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break;
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}
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}
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if (!found) {
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oc = calloc(1, sizeof(struct output_config));
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oc->name = strdup(output_name);
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oc->transform = WL_OUTPUT_TRANSFORM_NORMAL;
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wl_list_insert(&config->outputs, &oc->link);
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}
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if (strcmp(name, "x") == 0) {
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oc->x = strtol(value, NULL, 10);
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} else if (strcmp(name, "y") == 0) {
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oc->y = strtol(value, NULL, 10);
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} else if (strcmp(name, "rotate") == 0) {
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if (strcmp(value, "90") == 0) {
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oc->transform = WL_OUTPUT_TRANSFORM_90;
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} else if (strcmp(value, "180") == 0) {
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oc->transform = WL_OUTPUT_TRANSFORM_180;
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} else if (strcmp(value, "270") == 0) {
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oc->transform = WL_OUTPUT_TRANSFORM_270;
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} else if (strcmp(value, "flipped") == 0) {
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oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED;
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} else if (strcmp(value, "flipped-90") == 0) {
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oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED_90;
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} else if (strcmp(value, "flipped-180") == 0) {
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oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED_180;
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} else if (strcmp(value, "flipped-270") == 0) {
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oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED_270;
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} else {
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wlr_log(L_ERROR, "got unknown transform value: %s", value);
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}
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}
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} else if (strcmp(section, "cursor") == 0) {
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if (strcmp(name, "map-to-output") == 0) {
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free(config->cursor.mapped_output);
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config->cursor.mapped_output = strdup(value);
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} else if (strcmp(name, "geometry") == 0) {
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free(config->cursor.mapped_box);
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config->cursor.mapped_box = parse_geometry(value);
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} else {
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wlr_log(L_ERROR, "got unknown cursor config: %s", name);
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}
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} else if (strncmp(device_prefix, section, strlen(device_prefix)) == 0) {
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const char *device_name = section + strlen(device_prefix);
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struct device_config *dc;
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bool found = false;
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wl_list_for_each(dc, &config->devices, link) {
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if (strcmp(dc->name, device_name) == 0) {
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found = true;
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break;
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}
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}
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if (!found) {
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dc = calloc(1, sizeof(struct device_config));
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dc->name = strdup(device_name);
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wl_list_insert(&config->devices, &dc->link);
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}
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if (strcmp(name, "map-to-output") == 0) {
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free(dc->mapped_output);
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dc->mapped_output = strdup(value);
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} else if (strcmp(name, "geometry") == 0) {
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free(dc->mapped_box);
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dc->mapped_box = parse_geometry(value);
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} else {
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wlr_log(L_ERROR, "got unknown device config: %s", name);
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}
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} else {
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wlr_log(L_ERROR, "got unknown config section: %s", section);
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}
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return 1;
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}
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struct example_config *parse_args(int argc, char *argv[]) {
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struct example_config *config = calloc(1, sizeof(struct example_config));
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wl_list_init(&config->outputs);
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wl_list_init(&config->devices);
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int c;
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while ((c = getopt(argc, argv, "C:h")) != -1) {
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switch (c) {
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case 'C':
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config->config_path = strdup(optarg);
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break;
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case 'h':
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case '?':
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usage(argv[0], c != 'h');
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}
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}
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if (!config->config_path) {
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// get the config path from the current directory
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char cwd[MAXPATHLEN];
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if (getcwd(cwd, sizeof(cwd)) != NULL) {
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char buf[MAXPATHLEN];
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if (snprintf(buf, MAXPATHLEN, "%s/%s", cwd, "wlr-example.ini") >= MAXPATHLEN) {
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wlr_log(L_ERROR, "config path too long");
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exit(1);
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}
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config->config_path = strdup(buf);
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} else {
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wlr_log(L_ERROR, "could not get cwd");
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exit(1);
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}
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}
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int result = ini_parse(config->config_path, config_ini_handler, config);
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if (result == -1) {
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wlr_log(L_DEBUG, "No config file found. Using empty config.");
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} else if (result == -2) {
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wlr_log(L_ERROR, "Could not allocate memory to parse config file");
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exit(1);
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} else if (result != 0) {
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wlr_log(L_ERROR, "Could not parse config file");
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exit(1);
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}
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return config;
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}
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void example_config_destroy(struct example_config *config) {
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struct output_config *oc, *otmp = NULL;
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wl_list_for_each_safe(oc, otmp, &config->outputs, link) {
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free(oc->name);
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free(oc);
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}
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struct device_config *dc, *dtmp = NULL;
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wl_list_for_each_safe(dc, dtmp, &config->devices, link) {
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free(dc->name);
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if (dc->mapped_output) {
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free(dc->mapped_output);
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}
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if (dc->mapped_box) {
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free(dc->mapped_box);
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}
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free(dc);
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}
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if (config->config_path) {
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free(config->config_path);
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}
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if (config->cursor.mapped_output) {
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free(config->cursor.mapped_output);
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}
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if (config->cursor.mapped_box) {
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free(config->cursor.mapped_box);
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}
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free(config);
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}
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struct output_config *example_config_get_output(struct example_config *config,
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struct wlr_output *output) {
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struct output_config *o_config;
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wl_list_for_each(o_config, &config->outputs, link) {
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if (strcmp(o_config->name, output->name) == 0) {
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return o_config;
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}
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}
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return NULL;
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}
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struct device_config *example_config_get_device(struct example_config *config,
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struct wlr_input_device *device) {
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struct device_config *d_config;
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wl_list_for_each(d_config, &config->devices, link) {
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if (strcmp(d_config->name, device->name) == 0) {
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return d_config;
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}
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}
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return NULL;
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}
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/**
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* Set device output mappings to NULL and configure region mappings.
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*/
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static void reset_device_mappings(struct example_config *config,
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struct wlr_cursor *cursor, struct wlr_input_device *device) {
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struct device_config *d_config;
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wlr_cursor_map_input_to_output(cursor, device, NULL);
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d_config = example_config_get_device(config, device);
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if (d_config) {
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wlr_cursor_map_input_to_region(cursor, device,
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d_config->mapped_box);
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}
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}
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static void set_device_output_mappings(struct example_config *config,
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struct wlr_cursor *cursor, struct wlr_output *output,
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struct wlr_input_device *device) {
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struct device_config *d_config;
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d_config = example_config_get_device(config, device);
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if (d_config &&
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d_config->mapped_output &&
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strcmp(d_config->mapped_output, output->name) == 0) {
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wlr_cursor_map_input_to_output(cursor, device, output);
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}
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}
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void example_config_configure_cursor(struct example_config *config,
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struct wlr_cursor *cursor, struct compositor_state *compositor) {
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struct pointer_state *p_state;
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struct tablet_tool_state *tt_state;
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struct touch_state *tch_state;
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struct output_state *o_state;
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// reset mappings
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wlr_cursor_map_to_output(cursor, NULL);
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wl_list_for_each(p_state, &compositor->pointers, link) {
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reset_device_mappings(config, cursor, p_state->device);
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}
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wl_list_for_each(tt_state, &compositor->tablet_tools, link) {
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reset_device_mappings(config, cursor, tt_state->device);
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}
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wl_list_for_each(tch_state, &compositor->touch, link) {
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reset_device_mappings(config, cursor, tch_state->device);
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}
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// configure device to output mappings
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char *mapped_output = config->cursor.mapped_output;
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wl_list_for_each(o_state, &compositor->outputs, link) {
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if (mapped_output && strcmp(mapped_output, o_state->output->name) == 0) {
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wlr_cursor_map_to_output(cursor, o_state->output);
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}
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wl_list_for_each(p_state, &compositor->pointers, link) {
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set_device_output_mappings(config, cursor, o_state->output,
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p_state->device);
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}
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wl_list_for_each(tt_state, &compositor->tablet_tools, link) {
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set_device_output_mappings(config, cursor, o_state->output,
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tt_state->device);
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}
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wl_list_for_each(tch_state, &compositor->touch, link) {
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set_device_output_mappings(config, cursor, o_state->output,
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tch_state->device);
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}
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}
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}
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