01ec18e802
Can be used to change the orientation of a touchscreen.
Example usage with swaymsg:
# identity
swaymsg input type:touch calibration_matrix '"1 0 0 0 1 0"'
# 90 degree clockwise
swaymsg input type:touch calibration_matrix '"0 -1 1 1 0 0"'
# 180 degree clockwise
swaymsg input type:touch calibration_matrix '"-1 0 1 0 -1 1"'
# 270 degree clockwise
swaymsg input type:touch calibration_matrix '"0 1 0 -1 0 1"'
Documentation:
https://wayland.freedesktop.org/libinput/doc/latest/absolute-axes.html#calibration-of-absolute-devices
41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
#define _POSIX_C_SOURCE 200809L
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#include <string.h>
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#include <strings.h>
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#include "sway/config.h"
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#include "sway/commands.h"
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#include "sway/input/input-manager.h"
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#include "log.h"
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#include "stringop.h"
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#include "util.h"
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struct cmd_results *input_cmd_calibration_matrix(int argc, char **argv) {
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struct cmd_results *error = NULL;
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if ((error = checkarg(argc, "calibration_matrix", EXPECTED_EQUAL_TO, 1))) {
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return error;
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}
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struct input_config *ic = config->handler_context.input_config;
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if (!ic) {
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return cmd_results_new(CMD_FAILURE, "No input device defined.");
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}
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list_t *split = split_string(argv[0], " ");
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if (split->length != 6) {
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return cmd_results_new(CMD_FAILURE, "calibration_matrix should be a space-separated list of length 6");
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}
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float parsed[6];
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for (int i = 0; i < split->length; ++i) {
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char *item = split->items[i];
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float x = parse_float(item);
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if (x != x) {
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return cmd_results_new(CMD_FAILURE, "calibration_matrix: unable to parse float: %s", item);
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}
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parsed[i] = x;
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}
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ic->calibration_matrix.configured = true;
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memcpy(ic->calibration_matrix.matrix, parsed, sizeof(ic->calibration_matrix.matrix));
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return cmd_results_new(CMD_SUCCESS, NULL);
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}
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