key-state.c: add logging for 'pressed-sent'

diff --git a/src/input/key-state.c b/src/input/key-state.c
index 603b8c5af7a0c7a3205ca0ac17e168f070cbc34e..c512a76251b7376b48f374c0a00dc13bb91e7912 100644 (file)
--- a/src/input/key-state.c
+++ b/src/input/key-state.c
@@ -1,7 +1,10 @@
 // SPDX-License-Identifier: GPL-2.0-only
 #include <stdbool.h>
 #include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
+#include <wlr/util/log.h>
 #include "input/key-state.h"
 
 #define MAX_PRESSED_KEYS (16)
@@ -13,6 +16,26 @@ struct key_array {
 
 static struct key_array pressed, pressed_mods, bound, pressed_sent;
 
+static void
+report(struct key_array *array, const char *msg)
+{
+       static char *should_print;
+       static bool has_run;
+
+       if (!has_run) {
+               should_print = getenv("LABWC_DEBUG_KEY_STATE");
+               has_run = true;
+       }
+       if (!should_print) {
+               return;
+       }
+       printf("%s", msg);
+       for (int i = 0; i < array->nr_keys; ++i) {
+               printf("%d,", array->keys[i]);
+       }
+       printf("\n");
+}
+
 static bool
 key_present(struct key_array *array, uint32_t keycode)
 {
@@ -52,6 +75,9 @@ add_key(struct key_array *array, uint32_t keycode)
 uint32_t *
 key_state_pressed_sent_keycodes(void)
 {
+       report(&pressed, "before - pressed:");
+       report(&bound, "before - bound:");
+
        /* pressed_sent = pressed - bound */
        memcpy(pressed_sent.keys, pressed.keys,
                MAX_PRESSED_KEYS * sizeof(uint32_t));
@@ -59,6 +85,9 @@ key_state_pressed_sent_keycodes(void)
        for (int i = 0; i < bound.nr_keys; ++i) {
                remove_key(&pressed_sent, bound.keys[i]);
        }
+
+       report(&pressed_sent, "after - pressed_sent:");
+
        return pressed_sent.keys;
 }