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Add calibration_matrix config option

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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
This commit is contained in:
Sergei Dolgov 2019-06-17 11:38:41 +02:00 • committed by Simon Ser
parent f5d1c27226
commit 01ec18e802
8 changed files with 70 additions and 0 deletions
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1
sway/commands/input.c
View file

@ -9,6 +9,7 @@
// must be in order for the bsearch
static struct cmd_handler input_handlers[] = {
{ "accel_profile", input_cmd_accel_profile },
{ "calibration_matrix", input_cmd_calibration_matrix },
{ "click_method", input_cmd_click_method },
{ "drag", input_cmd_drag },
{ "drag_lock", input_cmd_drag_lock },

40
sway/commands/input/calibration_matrix.c Normal file
View file

@ -0,0 +1,40 @@
#define _POSIX_C_SOURCE 200809L
#include <string.h>
#include <strings.h>
#include "sway/config.h"
#include "sway/commands.h"
#include "sway/input/input-manager.h"
#include "log.h"
#include "stringop.h"
#include "util.h"
struct cmd_results *input_cmd_calibration_matrix(int argc, char **argv) {
struct cmd_results *error = NULL;
if ((error = checkarg(argc, "calibration_matrix", EXPECTED_EQUAL_TO, 1))) {
return error;
}
struct input_config *ic = config->handler_context.input_config;
if (!ic) {
return cmd_results_new(CMD_FAILURE, "No input device defined.");
}
list_t *split = split_string(argv[0], " ");
if (split->length != 6) {
return cmd_results_new(CMD_FAILURE, "calibration_matrix should be a space-separated list of length 6");
}
float parsed[6];
for (int i = 0; i < split->length; ++i) {
char *item = split->items[i];
float x = parse_float(item);
if (x != x) {
return cmd_results_new(CMD_FAILURE, "calibration_matrix: unable to parse float: %s", item);
}
parsed[i] = x;
}
ic->calibration_matrix.configured = true;
memcpy(ic->calibration_matrix.matrix, parsed, sizeof(ic->calibration_matrix.matrix));
return cmd_results_new(CMD_SUCCESS, NULL);
}