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Copy pathgesture_fwd.c
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74 lines (68 loc) · 3.93 KB
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/* gesture_fwd.c — forward EvenHub long-press + ring release-long-press to the
* phone as SysEvents, replacing the built-in "End this feature?" force-quit
* dialog. (Faceclaw has its own quit + 10s keepalive, so losing the dialog is
* fine.)
*
* Background (all confirmed on 2.2.4.34, see the g2-evenhub-input-event-map note):
* - Input dispatcher FUN_004424a2 turns each gesture into a UI event code and
* posts it via FUN_0045fc80(ctx, code, data).
* - Long-press = subtype 3. In EvenHub the branch calls FUN_0046a644 (dialog).
* - Ring release-long-press = subtype 0xe -> FUN_0045fc80(ctx, 0x4a, coords),
* which the EvenHub UI handler drops (no 0x4a case). Subtype 0xe is SHARED
* with a touchpad gesture, so we gate release forwarding on source==ring.
* - The UI-event dispatch (FUN_0045fc80 -> FUN_004505a4 -> FUN_004509a0 ->
* FUN_0045062c -> (*handler)()) is SYNCHRONOUS on the display thread, and the
* stock EvenHub SysEvent sender FUN_004ff232 is called from that same handler
* on that same thread. So we can build+send the SysEvent DIRECTLY here, from
* FUN_004424a2, with no cross-thread race and no change to the UI handler.
*
* Wire: FUN_004ff232(0,0,0, EventType, 0, 0) emits a g2.evenhub SysEvent
* (Cmd=OS_NOITY_EVENT_TO_APP_PACKET, DevEvent.SysEvent) with EventType = the 4th
* arg. We use the OsEventTypeList values Faceclaw already reserves:
* 9 = RING_LONG_PRESS_EVENT, 10 = RING_LONG_PRESS_RELEASE_EVENT (8 is IMU report).
* Both are gated to source==ring so press/release are symmetric (a touchpad
* long-press won't emit an unpaired press). EventSource stays 0 for these custom
* types, which is fine since we've already restricted them to the ring.
*/
typedef int (*fc80_t)(void *ctx, int code, void *data);
typedef int *(*modelookup_t)(void *g);
typedef int (*sysevt_t)(int, int, int, int, int, int);
#define FW_FC80 ((fc80_t)0x0045f8fdu) /* FUN_0045f8fc post UI event (Thumb) */
#define FW_MODE ((modelookup_t)0x0045f8e7u) /* FUN_0045f8e6 foreground mode ctx (Thumb) */
#define FW_SYSEVT ((sysevt_t)0x004da16bu) /* FUN_004da16a send EvenHub SysEvent (Thumb) */
/* Foreground UI ctx pointer: FUN_00442d86 loads r5 = *(0x00443750) = 0x200744d0,
* then passes r5[0] as the ctx to FUN_0045f8fc / FUN_0045f8e6. */
#define UI_CTX (*(void *volatile *)0x200744d0u)
/* Current input event record (sourced from the literal at 0x004444a4); byte 0 is the source:
* 0/1 = left/right temple touchpad, 4 = R1 ring. */
#define EVT_SRC (*(volatile unsigned char *)0x2034dc30u)
#define APP_EVENHUB 0xe0
#define ET_LONG 9 /* OsEventTypeList: RING_LONG_PRESS_EVENT */
#define ET_REL 10 /* OsEventTypeList: RING_LONG_PRESS_RELEASE_EVENT */
#define SRC_RING 4 /* input event source byte: R1 ring */
/* Replaces the subtype-3 EvenHub force-quit dialog call (bl FUN_0046a644). That
* branch already established app==0xe0 (EvenHub foreground); we additionally gate
* on source==ring so it pairs with the ring-only release below. A touchpad
* long-press in EvenHub now does nothing (dialog removed, no forward). */
void evenhub_longpress(void)
{
if (EVT_SRC == SRC_RING)
FW_SYSEVT(0, 0, 0, ET_LONG, 0, 0);
}
/* Wraps the subtype-0xe post (bl FUN_0045fc80(ctx, 0x4a, coords)). For a RING
* release-long-press while an EvenHub app is foreground, emit the release
* SysEvent and skip the (dropped-anyway) 0x4a post. Every other case — touchpad
* subtype-0xe, or ring release outside EvenHub — falls through to the original
* post so terminal/native/touchpad behavior is byte-for-byte unchanged. The
* return value is ignored by the caller. */
int ring_release(void *ctx, int code, void *data)
{
if (EVT_SRC == SRC_RING) { /* ring */
int *mode = FW_MODE(UI_CTX);
if (mode && *mode == APP_EVENHUB) { /* EvenHub foreground */
FW_SYSEVT(0, 0, 0, ET_REL, 0, 0);
return 1;
}
}
return FW_FC80(ctx, code, data);
}