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[EmuELEC] Feature - Button to keyboard #17

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[EmuELEC] Feature - Button to keyboard #17

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12f577b
Update gptokeyb.cpp
Langerz82 Nov 13, 2025
ebbf03c
Implement delay for key press emission
Langerz82 Jan 3, 2026
15c5a8d
Introduce delay in key emission process
Langerz82 Jan 4, 2026
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71 changes: 70 additions & 1 deletion gptokeyb.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -108,6 +108,7 @@ struct uinput_user_dev uidev;
int kill_signal = 15;
bool kill_mode = false;
bool sudo_kill = false; //allow sudo kill instead of killall for non-emuelec systems
bool is_btntokeyb = false; // allow hotkey+key to simulate keyboard press
bool pckill_mode = false; //emit alt+f4 to close apps on pc during kill mode, if env variable is set
bool openbor_mode = false;
bool xbox360_mode = false;
Expand All @@ -129,6 +130,8 @@ char* AppToKill;
bool config_mode = false;
bool hotkey_override = false;
char* hotkey_code;
char* btntokeyb_btn;
char* btntokeyb_keyb;

struct
{
Expand All @@ -145,6 +148,14 @@ struct
int current_right_analog_y = 0;
int current_l2 = 0;
int current_r2 = 0;

bool a_was_pressed = false;
bool b_was_pressed = false;
bool x_was_pressed = false;
bool y_was_pressed = false;
bool l1_was_pressed = false;
bool r1_was_pressed = false;

bool hotkey_pressed = false; // current state of hotkey
bool hotkey_was_pressed = false; // indicates hotkey button has been pressed, and key may need to be processed on button's release, if hotkey combo isn't triggered
bool start_pressed = false;
Expand Down Expand Up @@ -1414,26 +1425,32 @@ SDL_GameController* controller = SDL_GameControllerFromInstanceID(event.cdevice.
// Fake Xbox360 mode
switch (event.cbutton.button) {
case SDL_CONTROLLER_BUTTON_A:
state.a_was_pressed = is_pressed;
emitKey(BTN_A, is_pressed);
break;

case SDL_CONTROLLER_BUTTON_B:
state.b_was_pressed = is_pressed;
emitKey(BTN_B, is_pressed);
break;

case SDL_CONTROLLER_BUTTON_X:
state.x_was_pressed = is_pressed;
emitKey(BTN_X, is_pressed);
break;

case SDL_CONTROLLER_BUTTON_Y:
state.y_was_pressed = is_pressed;
emitKey(BTN_Y, is_pressed);
break;

case SDL_CONTROLLER_BUTTON_LEFTSHOULDER:
state.l1_was_pressed = is_pressed;
emitKey(BTN_TL, is_pressed);
break;

case SDL_CONTROLLER_BUTTON_RIGHTSHOULDER:
state.r1_was_pressed = is_pressed;
emitKey(BTN_TR, is_pressed);
break;

Expand Down Expand Up @@ -1491,6 +1508,25 @@ SDL_GameController* controller = SDL_GameControllerFromInstanceID(event.cdevice.
emitAxisMotion(ABS_HAT0X, is_pressed ? 1 : 0);
break;
}

if (is_btntokeyb && state.hotkey_pressed) {
if (
(state.a_was_pressed && strcmp(btntokeyb_btn,"a")==0) ||
(state.b_was_pressed && strcmp(btntokeyb_btn,"b")==0) ||
(state.x_was_pressed && strcmp(btntokeyb_btn,"x")==0) ||
(state.y_was_pressed && strcmp(btntokeyb_btn,"y")==0) ||
(state.l1_was_pressed && strcmp(btntokeyb_btn,"l1")==0) ||
(state.l2_was_pressed && strcmp(btntokeyb_btn,"l2")==0) ||
(state.r1_was_pressed && strcmp(btntokeyb_btn,"r1")==0) ||
(state.r2_was_pressed && strcmp(btntokeyb_btn,"r2")==0))
{
std::cout << "emitKey: " << btntokeyb_btn << " " << btntokeyb_keyb << std::endl;
emitKey(char_to_keycode(btntokeyb_keyb),true,0);
SDL_Delay(15);
emitKey(char_to_keycode(btntokeyb_keyb),false,0);
}
}

if ((kill_mode) && (state.start_pressed && state.hotkey_pressed)) {
if (pckill_mode) {
emitKey(KEY_F4,true,KEY_LEFTALT);
Expand Down Expand Up @@ -1566,6 +1602,7 @@ SDL_GameController* controller = SDL_GameControllerFromInstanceID(event.cdevice.
break;

case SDL_CONTROLLER_BUTTON_A:
state.a_was_pressed = is_pressed;
if (state.hotkey_pressed) {
emitKey(config.a_hk, is_pressed, config.a_hk_modifier);
if (is_pressed) { //keep track of combo button press so it can be released if hotkey is released before this button is released
Expand All @@ -1586,6 +1623,7 @@ SDL_GameController* controller = SDL_GameControllerFromInstanceID(event.cdevice.
break;

case SDL_CONTROLLER_BUTTON_B:
state.b_was_pressed = is_pressed;
if (state.hotkey_pressed) {
emitKey(config.b_hk, is_pressed, config.b_hk_modifier);
if (is_pressed) { //keep track of combo button press so it can be released if hotkey is released before this button is released
Expand All @@ -1606,6 +1644,7 @@ SDL_GameController* controller = SDL_GameControllerFromInstanceID(event.cdevice.
break;

case SDL_CONTROLLER_BUTTON_X:
state.x_was_pressed = is_pressed;
if (state.hotkey_pressed) {
emitKey(config.x_hk, is_pressed, config.x_hk_modifier);
if (is_pressed) { //keep track of combo button press so it can be released if hotkey is released before this button is released
Expand All @@ -1626,6 +1665,7 @@ SDL_GameController* controller = SDL_GameControllerFromInstanceID(event.cdevice.
break;

case SDL_CONTROLLER_BUTTON_Y:
state.y_was_pressed = is_pressed;
if (state.hotkey_pressed) {
emitKey(config.y_hk, is_pressed, config.y_hk_modifier);
if (is_pressed) { //keep track of combo button press so it can be released if hotkey is released before this button is released
Expand All @@ -1646,6 +1686,7 @@ SDL_GameController* controller = SDL_GameControllerFromInstanceID(event.cdevice.
break;

case SDL_CONTROLLER_BUTTON_LEFTSHOULDER:
state.l1_was_pressed = is_pressed;
if (state.hotkey_pressed) {
emitKey(config.l1_hk, is_pressed, config.l1_hk_modifier);
if (is_pressed) { //keep track of combo button press so it can be released if hotkey is released before this button is released
Expand All @@ -1666,6 +1707,7 @@ SDL_GameController* controller = SDL_GameControllerFromInstanceID(event.cdevice.
break;

case SDL_CONTROLLER_BUTTON_RIGHTSHOULDER:
state.r1_was_pressed = is_pressed;
if (state.hotkey_pressed) {
emitKey(config.r1_hk, is_pressed, config.r1_hk_modifier);
if (is_pressed) { //keep track of combo button press so it can be released if hotkey is released before this button is released
Expand Down Expand Up @@ -1821,6 +1863,25 @@ SDL_GameController* controller = SDL_GameControllerFromInstanceID(event.cdevice.
}
break;
} //switch

if (is_btntokeyb && state.hotkey_pressed) {
if (
(state.a_was_pressed && strcmp(btntokeyb_btn,"a")==0) ||
(state.b_was_pressed && strcmp(btntokeyb_btn,"b")==0) ||
(state.x_was_pressed && strcmp(btntokeyb_btn,"x")==0) ||
(state.y_was_pressed && strcmp(btntokeyb_btn,"y")==0) ||
(state.l1_was_pressed && strcmp(btntokeyb_btn,"l1")==0) ||
(state.l2_was_pressed && strcmp(btntokeyb_btn,"l2")==0) ||
(state.r1_was_pressed && strcmp(btntokeyb_btn,"r1")==0) ||
(state.r2_was_pressed && strcmp(btntokeyb_btn,"r2")==0))
{
std::cout << "emitKey: " << btntokeyb_btn << " " << btntokeyb_keyb << std::endl;
emitKey(char_to_keycode(btntokeyb_keyb),true,0);
SDL_Delay(15);
emitKey(char_to_keycode(btntokeyb_keyb),false,0);
}
}

if ((kill_mode) && (state.start_pressed && state.hotkey_pressed)) {
if (pckill_mode) {
emitKey(KEY_F4,true,KEY_LEFTALT);
Expand Down Expand Up @@ -2212,6 +2273,14 @@ int main(int argc, char* argv[])
kill_signal = atoi(argv[++ii]);
}
std::cout << "kill_signal: " << kill_signal << std::endl;
} else if (strcmp(argv[ii], "--btntokeyb") == 0) {
if (ii + 2 < argc) {
is_btntokeyb = true;
btntokeyb_btn = argv[++ii];
btntokeyb_keyb = argv[++ii];
}
std::cout << "keypress: " << btntokeyb_btn << std::endl;
std::cout << "keyboard_press: " << btntokeyb_keyb << std::endl;
}
}

Expand Down Expand Up @@ -2325,4 +2394,4 @@ int main(int argc, char* argv[])
ioctl(uinp_fd, UI_DEV_DESTROY);
close(uinp_fd);
return 0;
}
}