diff options
Diffstat (limited to 'examples/support/config.c')
| -rw-r--r-- | examples/support/config.c | 347 |
1 files changed, 347 insertions, 0 deletions
diff --git a/examples/support/config.c b/examples/support/config.c new file mode 100644 index 00000000..0ef025c0 --- /dev/null +++ b/examples/support/config.c @@ -0,0 +1,347 @@ +#ifndef _POSIX_C_SOURCE +#define _POSIX_C_SOURCE 200809L +#endif +#include <stdlib.h> +#include <limits.h> +#include <getopt.h> +#include <string.h> +#include <unistd.h> +#include <sys/param.h> +#include <wlr/util/log.h> +#include <wlr/types/wlr_box.h> +#include "shared.h" +#include "config.h" +#include "ini.h" + +static void usage(const char *name, int ret) { + fprintf(stderr, + "usage: %s [-C <FILE>]\n" + "\n" + " -C <FILE> Path to the configuration file\n" + " (default: wlr-example.ini).\n" + " See `rootston/rootston.ini.example` for config\n" + " file documentation.\n", name); + + exit(ret); +} + +static struct wlr_box *parse_geometry(const char *str) { + // format: {width}x{height}+{x}+{y} + if (strlen(str) > 255) { + wlr_log(L_ERROR, "cannot parse geometry string, too long"); + return NULL; + } + + char *buf = strdup(str); + struct wlr_box *box = calloc(1, sizeof(struct wlr_box)); + + bool has_width = false; + bool has_height = false; + bool has_x = false; + bool has_y = false; + + char *pch = strtok(buf, "x+"); + while (pch != NULL) { + errno = 0; + char *endptr; + long val = strtol(pch, &endptr, 0); + + if ((errno == ERANGE && (val == LONG_MAX || val == LONG_MIN)) || + (errno != 0 && val == 0)) { + goto invalid_input; + } + + if (endptr == pch) { + goto invalid_input; + } + + if (!has_width) { + box->width = val; + has_width = true; + } else if (!has_height) { + box->height = val; + has_height = true; + } else if (!has_x) { + box->x = val; + has_x = true; + } else if (!has_y) { + box->y = val; + has_y = true; + } else { + break; + } + pch = strtok(NULL, "x+"); + } + + if (!has_width || !has_height) { + goto invalid_input; + } + + free(buf); + return box; + +invalid_input: + wlr_log(L_ERROR, "could not parse geometry string: %s", str); + free(buf); + free(box); + return NULL; +} + +static const char *output_prefix = "output:"; +static const char *device_prefix = "device:"; + +static int config_ini_handler(void *user, const char *section, const char *name, + const char *value) { + struct example_config *config = user; + if (strncmp(output_prefix, section, strlen(output_prefix)) == 0) { + const char *output_name = section + strlen(output_prefix); + struct output_config *oc; + bool found = false; + + wl_list_for_each(oc, &config->outputs, link) { + if (strcmp(oc->name, output_name) == 0) { + found = true; + break; + } + } + + if (!found) { + oc = calloc(1, sizeof(struct output_config)); + oc->name = strdup(output_name); + oc->transform = WL_OUTPUT_TRANSFORM_NORMAL; + wl_list_insert(&config->outputs, &oc->link); + } + + if (strcmp(name, "x") == 0) { + oc->x = strtol(value, NULL, 10); + } else if (strcmp(name, "y") == 0) { + oc->y = strtol(value, NULL, 10); + } else if (strcmp(name, "rotate") == 0) { + if (strcmp(value, "90") == 0) { + oc->transform = WL_OUTPUT_TRANSFORM_90; + } else if (strcmp(value, "180") == 0) { + oc->transform = WL_OUTPUT_TRANSFORM_180; + } else if (strcmp(value, "270") == 0) { + oc->transform = WL_OUTPUT_TRANSFORM_270; + } else if (strcmp(value, "flipped") == 0) { + oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED; + } else if (strcmp(value, "flipped-90") == 0) { + oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED_90; + } else if (strcmp(value, "flipped-180") == 0) { + oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED_180; + } else if (strcmp(value, "flipped-270") == 0) { + oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED_270; + } else { + wlr_log(L_ERROR, "got unknown transform value: %s", value); + } + } + } else if (strcmp(section, "cursor") == 0) { + if (strcmp(name, "map-to-output") == 0) { + free(config->cursor.mapped_output); + config->cursor.mapped_output = strdup(value); + } else if (strcmp(name, "geometry") == 0) { + free(config->cursor.mapped_box); + config->cursor.mapped_box = parse_geometry(value); + } else { + wlr_log(L_ERROR, "got unknown cursor config: %s", name); + } + } else if (strncmp(device_prefix, section, strlen(device_prefix)) == 0) { + const char *device_name = section + strlen(device_prefix); + struct device_config *dc; + bool found = false; + + wl_list_for_each(dc, &config->devices, link) { + if (strcmp(dc->name, device_name) == 0) { + found = true; + break; + } + } + + if (!found) { + dc = calloc(1, sizeof(struct device_config)); + dc->name = strdup(device_name); + wl_list_insert(&config->devices, &dc->link); + } + + if (strcmp(name, "map-to-output") == 0) { + free(dc->mapped_output); + dc->mapped_output = strdup(value); + } else if (strcmp(name, "geometry") == 0) { + free(dc->mapped_box); + dc->mapped_box = parse_geometry(value); + } else { + wlr_log(L_ERROR, "got unknown device config: %s", name); + } + } else { + wlr_log(L_ERROR, "got unknown config section: %s", section); + } + + return 1; +} + +struct example_config *parse_args(int argc, char *argv[]) { + struct example_config *config = calloc(1, sizeof(struct example_config)); + wl_list_init(&config->outputs); + wl_list_init(&config->devices); + + int c; + while ((c = getopt(argc, argv, "C:h")) != -1) { + switch (c) { + case 'C': + config->config_path = strdup(optarg); + break; + case 'h': + case '?': + usage(argv[0], c != 'h'); + } + } + + if (!config->config_path) { + // get the config path from the current directory + char cwd[MAXPATHLEN]; + if (getcwd(cwd, sizeof(cwd)) != NULL) { + char buf[MAXPATHLEN]; + snprintf(buf, MAXPATHLEN, "%s/%s", cwd, "wlr-example.ini"); + config->config_path = strdup(buf); + } else { + wlr_log(L_ERROR, "could not get cwd"); + exit(1); + } + } + + int result = ini_parse(config->config_path, config_ini_handler, config); + + if (result == -1) { + wlr_log(L_DEBUG, "No config file found. Using empty config."); + } else if (result == -2) { + wlr_log(L_ERROR, "Could not allocate memory to parse config file"); + exit(1); + } else if (result != 0) { + wlr_log(L_ERROR, "Could not parse config file"); + exit(1); + } + + return config; +} + +void example_config_destroy(struct example_config *config) { + struct output_config *oc, *otmp = NULL; + wl_list_for_each_safe(oc, otmp, &config->outputs, link) { + free(oc->name); + free(oc); + } + + struct device_config *dc, *dtmp = NULL; + wl_list_for_each_safe(dc, dtmp, &config->devices, link) { + free(dc->name); + if (dc->mapped_output) { + free(dc->mapped_output); + } + if (dc->mapped_box) { + free(dc->mapped_box); + } + free(dc); + } + + if (config->config_path) { + free(config->config_path); + } + if (config->cursor.mapped_output) { + free(config->cursor.mapped_output); + } + if (config->cursor.mapped_box) { + free(config->cursor.mapped_box); + } + free(config); +} + +struct output_config *example_config_get_output(struct example_config *config, + struct wlr_output *output) { + struct output_config *o_config; + wl_list_for_each(o_config, &config->outputs, link) { + if (strcmp(o_config->name, output->name) == 0) { + return o_config; + } + } + + return NULL; +} + +struct device_config *example_config_get_device(struct example_config *config, + struct wlr_input_device *device) { + struct device_config *d_config; + wl_list_for_each(d_config, &config->devices, link) { + if (strcmp(d_config->name, device->name) == 0) { + return d_config; + } + } + + return NULL; +} + +/** + * Set device output mappings to NULL and configure region mappings. + */ +static void reset_device_mappings(struct example_config *config, + struct wlr_cursor *cursor, struct wlr_input_device *device) { + struct device_config *d_config; + wlr_cursor_map_input_to_output(cursor, device, NULL); + d_config = example_config_get_device(config, device); + if (d_config) { + wlr_cursor_map_input_to_region(cursor, device, + d_config->mapped_box); + } +} + +static void set_device_output_mappings(struct example_config *config, + struct wlr_cursor *cursor, struct wlr_output *output, + struct wlr_input_device *device) { + struct device_config *d_config; + d_config = example_config_get_device(config, device); + if (d_config && + d_config->mapped_output && + strcmp(d_config->mapped_output, output->name) == 0) { + wlr_cursor_map_input_to_output(cursor, device, output); + } +} + +void example_config_configure_cursor(struct example_config *config, + struct wlr_cursor *cursor, struct compositor_state *compositor) { + struct pointer_state *p_state; + struct tablet_tool_state *tt_state; + struct touch_state *tch_state; + struct output_state *o_state; + + // reset mappings + wlr_cursor_map_to_output(cursor, NULL); + wl_list_for_each(p_state, &compositor->pointers, link) { + reset_device_mappings(config, cursor, p_state->device); + } + wl_list_for_each(tt_state, &compositor->tablet_tools, link) { + reset_device_mappings(config, cursor, tt_state->device); + } + wl_list_for_each(tch_state, &compositor->touch, link) { + reset_device_mappings(config, cursor, tch_state->device); + } + + // configure device to output mappings + char *mapped_output = config->cursor.mapped_output; + wl_list_for_each(o_state, &compositor->outputs, link) { + if (mapped_output && strcmp(mapped_output, o_state->output->name) == 0) { + wlr_cursor_map_to_output(cursor, o_state->output); + } + + wl_list_for_each(p_state, &compositor->pointers, link) { + set_device_output_mappings(config, cursor, o_state->output, + p_state->device); + } + wl_list_for_each(tt_state, &compositor->tablet_tools, link) { + set_device_output_mappings(config, cursor, o_state->output, + tt_state->device); + } + wl_list_for_each(tch_state, &compositor->touch, link) { + set_device_output_mappings(config, cursor, o_state->output, + tch_state->device); + } + } +} |