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x11: Fail gracefully on keymap creation failure

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This commit is contained in:
Frank Praznik
2025-09-06 13:09:12 -04:00
parent 2a0e751ff5
commit 8c4e048a68
1 changed files with 24 additions and 11 deletions
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35
src/video/x11/SDL_x11keyboard.c
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@@ -307,14 +307,12 @@ static unsigned int X11_GetXkbVirtualModifierMask(SDL_VideoDevice *_this, const
SDL_VideoData *videodata = _this->internal;
unsigned int mod_mask = 0;
if (videodata->keyboard.xkb_enabled) {
Atom vmod = X11_XInternAtom(videodata->display, vmod_name, True);
if (vmod != None) {
for (int i = 0; i < XkbNumVirtualMods; ++i) {
if (vmod == videodata->keyboard.xkb.desc_ptr->names->vmods[i]) {
mod_mask = videodata->keyboard.xkb.desc_ptr->server->vmods[i];
break;
}
const Atom vmod = X11_XInternAtom(videodata->display, vmod_name, True);
if (vmod != None) {
for (int i = 0; i < XkbNumVirtualMods; ++i) {
if (vmod == videodata->keyboard.xkb.desc_ptr->names->vmods[i]) {
mod_mask = videodata->keyboard.xkb.desc_ptr->server->vmods[i];
break;
}
}
}
@@ -382,7 +380,7 @@ void X11_UpdateKeymap(SDL_VideoDevice *_this, bool send_event)
for (unsigned int i = 0; i < XkbNumKbdGroups; ++i) {
SDL_DestroyKeymap(data->keyboard.xkb.keymaps[i]);
data->keyboard.xkb.keymaps[i] = SDL_CreateKeymap(false);
data->keyboard.xkb.keymaps[i] = NULL;
}
X11_XkbGetNames(data->display, XkbVirtualModNamesMask, data->keyboard.xkb.desc_ptr);
@@ -402,6 +400,18 @@ void X11_UpdateKeymap(SDL_VideoDevice *_this, bool send_event)
data->keyboard.numlock_mask = X11_GetXkbVirtualModifierMask(_this, "NumLock");
data->keyboard.scrolllock_mask = X11_GetXkbVirtualModifierMask(_this, "ScrollLock");
for (unsigned int i = 0; i < XkbNumKbdGroups; ++i) {
data->keyboard.xkb.keymaps[i] = SDL_CreateKeymap(false);
if (!data->keyboard.xkb.keymaps[i]) {
for (unsigned int j = 0; j < i; ++j) {
SDL_DestroyKeymap(data->keyboard.xkb.keymaps[i]);
data->keyboard.xkb.keymaps[j] = NULL;
}
return;
}
}
const Uint32 valid_mod_mask = ShiftMask | LockMask | data->keyboard.alt_mask | data->keyboard.level3_mask | data->keyboard.level5_mask;
for (Uint32 xkeycode = data->keyboard.xkb.desc_ptr->min_key_code; xkeycode < data->keyboard.xkb.desc_ptr->max_key_code; ++xkeycode) {
@@ -474,6 +484,9 @@ void X11_UpdateKeymap(SDL_VideoDevice *_this, bool send_event)
#endif
{
SDL_Keymap *keymap = SDL_CreateKeymap(true);
if (!keymap) {
return;
}
if (send_event) {
if (data->keyboard.core.keysym_map) {
@@ -481,8 +494,8 @@ void X11_UpdateKeymap(SDL_VideoDevice *_this, bool send_event)
}
X11_XDisplayKeycodes(data->display, &data->keyboard.core.min_keycode, &data->keyboard.core.max_keycode);
data->keyboard.core.keysym_map = X11_XGetKeyboardMapping(data->display, data->keyboard.core.min_keycode,
data->keyboard.core.max_keycode - data->keyboard.core.min_keycode,
&data->keyboard.core.keysyms_per_key);
data->keyboard.core.max_keycode - data->keyboard.core.min_keycode,
&data->keyboard.core.keysyms_per_key);
}
for (Uint32 xkeycode = data->keyboard.core.min_keycode; xkeycode <= data->keyboard.core.max_keycode; ++xkeycode) {