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Added support for press/release hardware keyboard events in iOS 13.4

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This commit is contained in:
Sam Lantinga 2020-04-08 19:16:31 -07:00
parent e9c94ac0b3
commit d4f1b520c9
5 changed files with 161 additions and 92 deletions
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80
src/events/SDL_keyboard.c
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@ -33,6 +33,9 @@
/* Global keyboard information */
#define KEYBOARD_HARDWARE 0x01
#define KEYBOARD_AUTORELEASE 0x02
typedef struct SDL_Keyboard SDL_Keyboard;
struct SDL_Keyboard
@ -40,8 +43,10 @@ struct SDL_Keyboard
/* Data common to all keyboards */
SDL_Window *focus;
Uint16 modstate;
Uint8 keysource[SDL_NUM_SCANCODES];
Uint8 keystate[SDL_NUM_SCANCODES];
SDL_Keycode keymap[SDL_NUM_SCANCODES];
SDL_bool autorelease_pending;
};
static SDL_Keyboard SDL_keyboard;
@ -675,19 +680,20 @@ SDL_SetKeyboardFocus(SDL_Window * window)
}
}
int
SDL_SendKeyboardKey(Uint8 state, SDL_Scancode scancode)
static int
SDL_SendKeyboardKeyInternal(Uint8 source, Uint8 state, SDL_Scancode scancode)
{
SDL_Keyboard *keyboard = &SDL_keyboard;
int posted;
SDL_Keymod modifier;
SDL_Keycode keycode;
Uint32 type;
Uint8 repeat;
Uint8 repeat = SDL_FALSE;
if (!scancode) {
if (scancode == SDL_SCANCODE_UNKNOWN) {
return 0;
}
#ifdef DEBUG_KEYBOARD
printf("The '%s' key has been %s\n", SDL_GetScancodeName(scancode),
state == SDL_PRESSED ? "pressed" : "released");
@ -707,12 +713,20 @@ SDL_SendKeyboardKey(Uint8 state, SDL_Scancode scancode)
}
/* Drop events that don't change state */
repeat = (state && keyboard->keystate[scancode]);
if (keyboard->keystate[scancode] == state && !repeat) {
#if 0
printf("Keyboard event didn't change state - dropped!\n");
#endif
return 0;
if (state) {
if (keyboard->keystate[scancode]) {
if (!(keyboard->keysource[scancode] & source)) {
keyboard->keysource[scancode] |= source;
return 0;
}
repeat = SDL_TRUE;
}
keyboard->keysource[scancode] |= source;
} else {
if (!keyboard->keystate[scancode]) {
return 0;
}
keyboard->keysource[scancode] = 0;
}
/* Update internal keyboard state */
@ -720,6 +734,10 @@ SDL_SendKeyboardKey(Uint8 state, SDL_Scancode scancode)
keycode = keyboard->keymap[scancode];
if (source == KEYBOARD_AUTORELEASE) {
keyboard->autorelease_pending = SDL_TRUE;
}
/* Update modifiers state if applicable */
switch (keycode) {
case SDLK_LCTRL:
@ -785,6 +803,48 @@ SDL_SendKeyboardKey(Uint8 state, SDL_Scancode scancode)
return (posted);
}
int
SDL_SendKeyboardKey(Uint8 state, SDL_Scancode scancode)
{
return SDL_SendKeyboardKeyInternal(KEYBOARD_HARDWARE, state, scancode);
}
int
SDL_SendKeyboardKeyAutoRelease(SDL_Scancode scancode)
{
return SDL_SendKeyboardKeyInternal(KEYBOARD_AUTORELEASE, SDL_PRESSED, scancode);
}
void
SDL_ReleaseAutoReleaseKeys(void)
{
SDL_Keyboard *keyboard = &SDL_keyboard;
SDL_Scancode scancode;
if (keyboard->autorelease_pending) {
for (scancode = SDL_SCANCODE_UNKNOWN; scancode < SDL_NUM_SCANCODES; ++scancode) {
if (keyboard->keysource[scancode] == KEYBOARD_AUTORELEASE) {
SDL_SendKeyboardKeyInternal(KEYBOARD_AUTORELEASE, SDL_RELEASED, scancode);
}
}
keyboard->autorelease_pending = SDL_FALSE;
}
}
SDL_bool
SDL_HardwareKeyboardKeyPressed(void)
{
SDL_Keyboard *keyboard = &SDL_keyboard;
SDL_Scancode scancode;
for (scancode = SDL_SCANCODE_UNKNOWN; scancode < SDL_NUM_SCANCODES; ++scancode) {
if ((keyboard->keysource[scancode] & KEYBOARD_HARDWARE) != 0) {
return SDL_TRUE;
}
}
return SDL_FALSE;
}
int
SDL_SendKeyboardText(const char *text)
{