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events: Add function to send keystrokes and not update the modifier state

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Add SDL_SendKeyboardKeyIgnoreModifiers() function and repurpose the source parameter for the SDL_SendKeyboardKeyInternal() function to use as a generic set of keyboard flags.
This commit is contained in:
Frank Praznik 2022-12-30 10:06:00 -05:00 • committed by Sam Lantinga
parent 59ad6793b9
commit d2917918c0
2 changed files with 60 additions and 45 deletions
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20
src/events/SDL_keyboard.c
View file

@ -30,8 +30,14 @@
/* Global keyboard information */
#define KEYBOARD_HARDWARE 0x01
#define KEYBOARD_AUTORELEASE 0x02
typedef enum
{
KEYBOARD_HARDWARE = 0x01,
KEYBOARD_AUTORELEASE = 0x02,
KEYBOARD_IGNOREMODIFIERS = 0x04
} SDL_KeyboardFlags;
#define KEYBOARD_SOURCE_MASK (KEYBOARD_HARDWARE | KEYBOARD_AUTORELEASE)
typedef struct SDL_Keyboard SDL_Keyboard;
@ -789,13 +795,14 @@ void SDL_SetKeyboardFocus(SDL_Window *window)
}
}
static int SDL_SendKeyboardKeyInternal(Uint64 timestamp, Uint8 source, Uint8 state, SDL_Scancode scancode, SDL_Keycode keycode)
static int SDL_SendKeyboardKeyInternal(Uint64 timestamp, SDL_KeyboardFlags flags, Uint8 state, SDL_Scancode scancode, SDL_Keycode keycode)
{
SDL_Keyboard *keyboard = &SDL_keyboard;
int posted;
SDL_Keymod modifier;
Uint32 type;
Uint8 repeat = SDL_FALSE;
const Uint8 source = flags & KEYBOARD_SOURCE_MASK;
if (scancode == SDL_SCANCODE_UNKNOWN || scancode >= SDL_NUM_SCANCODES) {
return 0;
@ -848,6 +855,7 @@ static int SDL_SendKeyboardKeyInternal(Uint64 timestamp, Uint8 source, Uint8 sta
}
/* Update modifiers state if applicable */
if (!(flags & KEYBOARD_IGNOREMODIFIERS)) {
switch (keycode) {
case SDLK_LCTRL:
modifier = SDL_KMOD_LCTRL;
@ -898,6 +906,7 @@ static int SDL_SendKeyboardKeyInternal(Uint64 timestamp, Uint8 source, Uint8 sta
} else {
keyboard->modstate &= ~modifier;
}
}
/* Post the event, if desired */
posted = 0;
@ -973,6 +982,11 @@ int SDL_SendKeyboardKeyAutoRelease(Uint64 timestamp, SDL_Scancode scancode)
return SDL_SendKeyboardKeyInternal(timestamp, KEYBOARD_AUTORELEASE, SDL_PRESSED, scancode, SDLK_UNKNOWN);
}
int SDL_SendKeyboardKeyIgnoreModifiers(Uint64 timestamp, Uint8 state, SDL_Scancode scancode)
{
return SDL_SendKeyboardKeyInternal(timestamp, KEYBOARD_HARDWARE | KEYBOARD_IGNOREMODIFIERS, state, scancode, SDLK_UNKNOWN);
}
void SDL_ReleaseAutoReleaseKeys(void)
{
SDL_Keyboard *keyboard = &SDL_keyboard;

1
src/events/SDL_keyboard_c.h
View file

@ -52,6 +52,7 @@ extern int SDL_SendKeyboardUnicodeKey(Uint64 timestamp, Uint32 ch);
/* Send a keyboard key event */
extern int SDL_SendKeyboardKey(Uint64 timestamp, Uint8 state, SDL_Scancode scancode);
extern int SDL_SendKeyboardKeyAutoRelease(Uint64 timestamp, SDL_Scancode scancode);
extern int SDL_SendKeyboardKeyIgnoreModifiers(Uint64 timestamp, Uint8 state, SDL_Scancode scancode);
/* This is for platforms that don't know the keymap but can report scancode and keycode directly.
Most platforms should prefer to optionally call SDL_SetKeymap and then use SDL_SendKeyboardKey. */