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wayland: Handle the Num Lock and Caps Lock modifiers via modifier events

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Num Lock and Caps Lock always need to be explicitly handled by the modifier handler function, or they won't be correctly set if active at application startup, or if the lock state is changed while the application lacks focus since a key press for these keys will never be received.  In these cases, the internal SDL modifier state can end up the inverse of the actual modifier state.

(cherry picked from commit 653e484da17d773f40bff94121a23a3b38f47a0a)
This commit is contained in:
Frank Praznik 2022-12-08 10:56:55 -05:00 committed by Sam Lantinga
parent fc689a6cb3
commit 8b74be464f
1 changed files with 3 additions and 2 deletions
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5
src/video/wayland/SDL_waylandevents.c
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@ -1248,14 +1248,15 @@ static void keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,
WAYLAND_xkb_state_update_mask(input->xkb.state, mods_depressed, mods_latched,
mods_locked, 0, 0, group);
SDL_ToggleModState(KMOD_NUM, modstate & input->xkb.idx_num);
SDL_ToggleModState(KMOD_CAPS, modstate & input->xkb.idx_caps);
/* Toggle the modifier states for virtual keyboards, as they may not send key presses. */
if (input->keyboard_is_virtual) {
SDL_ToggleModState(KMOD_SHIFT, modstate & input->xkb.idx_shift);
SDL_ToggleModState(KMOD_CTRL, modstate & input->xkb.idx_ctrl);
SDL_ToggleModState(KMOD_ALT, modstate & input->xkb.idx_alt);
SDL_ToggleModState(KMOD_GUI, modstate & input->xkb.idx_gui);
SDL_ToggleModState(KMOD_NUM, modstate & input->xkb.idx_num);
SDL_ToggleModState(KMOD_CAPS, modstate & input->xkb.idx_caps);
}
/* If a key is repeating, update the text to apply the modifier. */