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keyboard: add utilities for pointer keys

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References: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3803
This commit is contained in:
Simon Ser 2024-08-08 23:36:04 +02:00 • committed by Kirill Primak
parent 7ce868bcf6
commit 95d25d833f
2 changed files with 61 additions and 0 deletions
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17
include/wlr/types/wlr_keyboard.h
View file

@ -115,6 +115,23 @@ bool wlr_keyboard_set_keymap(struct wlr_keyboard *kb,
bool wlr_keyboard_keymaps_match(struct xkb_keymap *km1, struct xkb_keymap *km2); bool wlr_keyboard_keymaps_match(struct xkb_keymap *km1, struct xkb_keymap *km2);
/**
* Interpret pointer button key symbols.
*
* Returns a button code (BTN_*) if the key symbol is a pointer button
* (XKB_KEY_Pointer_Button*), 0 otherwise.
*/
uint32_t wlr_keyboard_keysym_to_pointer_button(xkb_keysym_t keysym);
/**
* Interpret pointer motion key symbols.
*
* Sets dx and dy to horizontal and vertical motion deltas (0, 1 or -1) if the
* key symbol is a pointer motion (XKB_KEY_Pointer_*). Otherwise, sets both dx
* and dy to 0.
*/
void wlr_keyboard_keysym_to_pointer_motion(xkb_keysym_t keysym, int *dx, int *dy);
/** /**
* Set the keyboard repeat info. * Set the keyboard repeat info.
* *

44
types/wlr_keyboard.c
View file

@ -1,4 +1,5 @@
#include <assert.h> #include <assert.h>
#include <linux/input-event-codes.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <sys/mman.h> #include <sys/mman.h>
@ -304,3 +305,46 @@ bool wlr_keyboard_keymaps_match(struct xkb_keymap *km1,
free(km2_str); free(km2_str);
return result; return result;
} }
uint32_t wlr_keyboard_keysym_to_pointer_button(xkb_keysym_t keysym) {
switch (keysym) {
case XKB_KEY_Pointer_Button1:
return BTN_LEFT;
case XKB_KEY_Pointer_Button2:
return BTN_MIDDLE;
case XKB_KEY_Pointer_Button3:
return BTN_RIGHT;
default:
return 0;
}
}
void wlr_keyboard_keysym_to_pointer_motion(xkb_keysym_t keysym, int *dx, int *dy) {
*dx = 0;
switch (keysym) {
case XKB_KEY_Pointer_Right:
case XKB_KEY_Pointer_DownRight:
case XKB_KEY_Pointer_UpRight:
*dx = 1;
break;
case XKB_KEY_Pointer_Left:
case XKB_KEY_Pointer_DownLeft:
case XKB_KEY_Pointer_UpLeft:
*dx = -1;
break;
}
*dy = 0;
switch (keysym) {
case XKB_KEY_Pointer_Down:
case XKB_KEY_Pointer_DownLeft:
case XKB_KEY_Pointer_DownRight:
*dy = 1;
break;
case XKB_KEY_Pointer_Up:
case XKB_KEY_Pointer_UpLeft:
case XKB_KEY_Pointer_UpRight:
*dy = -1;
break;
}
}