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[client] input: track pointer confinement state

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This commit is contained in:
Geoffrey McRae
2026-08-06 14:29:45 +10:00
parent 1baa5a3710
commit 142dc2bcef
13 changed files with 383 additions and 138 deletions
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298
client/displayservers/Wayland/input.c
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@@ -196,6 +196,9 @@ static void confinedHandler(void * data,
atomic_store_explicit(&wlWm.confActive, true, memory_order_release);
LG_UNLOCK(wlWm.surfaceLock);
MTRACE("conf active=1 id=%u valid=%d", proxyId(pointer), valid);
if (valid)
app_handleGrabEvent(true);
}
static void unconfinedHandler(void * data,
@@ -208,6 +211,9 @@ static void unconfinedHandler(void * data,
atomic_store_explicit(&wlWm.confActive, false, memory_order_release);
LG_UNLOCK(wlWm.surfaceLock);
MTRACE("conf active=0 id=%u valid=%d", proxyId(pointer), valid);
if (valid)
app_handleGrabEvent(false);
}
static const struct zwp_confined_pointer_v1_listener confinedListener = {
@@ -215,6 +221,65 @@ static const struct zwp_confined_pointer_v1_listener confinedListener = {
.unconfined = unconfinedHandler,
};
static struct zwp_confined_pointer_v1 * createConfine(
struct wl_region * region);
static bool queueConfSync(void);
static void confSyncHandler(void * data, struct wl_callback * callback,
uint32_t serial)
{
bool notify = false;
bool valid = false;
const uint32_t id = proxyId(callback);
uint32_t confId = 0;
uint64_t confSeq = 0;
LG_LOCK(wlWm.surfaceLock);
if (callback == wlWm.confSync)
{
valid = true;
wl_callback_destroy(callback);
wlWm.confSync = NULL;
atomic_store_explicit(&wlWm.confActive, false,
memory_order_release);
notify = wlWm.inputLive;
if (wlWm.inputLive && wlWm.confReq && wlWm.pointer &&
wlWm.pointerConstraints && !wlWm.confinedPointer &&
!wlWm.lockedPointer)
{
wlWm.confinedPointer = createConfine(NULL);
confId = proxyId(wlWm.confinedPointer);
confSeq = app_mouseSeq();
}
}
LG_UNLOCK(wlWm.surfaceLock);
MTRACE("conf sync id=%u serial=%u valid=%d notify=%d", id, serial,
valid, notify);
MLOG(confSeq, "conf req id=%u why=sync", confId);
if (notify)
app_handleGrabEvent(false);
}
static const struct wl_callback_listener confSyncListener = {
.done = confSyncHandler,
};
static bool queueConfSync(void)
{
if (wlWm.confSync)
return true;
wlWm.confSync = wl_display_sync(wlWm.display);
if (!wlWm.confSync)
return false;
wl_callback_add_listener(wlWm.confSync, &confSyncListener, NULL);
return true;
}
static void lockedHandler(void * data,
struct zwp_locked_pointer_v1 * pointer)
{
@@ -437,14 +502,21 @@ static const struct wl_keyboard_listener keyboardListener = {
.modifiers = keyboardModifiersHandler,
};
static void waylandCleanUpPointer(void)
static void waylandCleanUpPointer(bool notify)
{
bool event = false;
uint32_t lockId = 0;
uint32_t confId = 0;
uint64_t lockSeq = 0;
uint64_t confSeq = 0;
INTERLOCKED_SECTION(wlWm.surfaceLock,
{
if (wlWm.confSync)
{
wl_callback_destroy(wlWm.confSync);
wlWm.confSync = NULL;
}
atomic_store_explicit(&wlWm.lockActive, false, memory_order_release);
atomic_store_explicit(&wlWm.confActive, false, memory_order_release);
@@ -463,19 +535,25 @@ static void waylandCleanUpPointer(void)
wlWm.confinedPointer = NULL;
confSeq = app_mouseSeq();
}
if (wlWm.relativePointer)
{
zwp_relative_pointer_v1_destroy(wlWm.relativePointer);
wlWm.relativePointer = NULL;
}
wl_pointer_destroy(wlWm.pointer);
wlWm.pointer = NULL;
wlWm.pointerInSurface = false;
event = notify && wlWm.inputLive;
});
MLOG(lockSeq, "lock destroy id=%u why=pointer", lockId);
MLOG(confSeq, "conf destroy id=%u why=pointer", confId);
if (wlWm.relativePointer)
{
zwp_relative_pointer_v1_destroy(wlWm.relativePointer);
wlWm.relativePointer = NULL;
}
wl_pointer_destroy(wlWm.pointer);
wlWm.pointer = NULL;
if (event)
app_handleGrabEvent(false);
}
// Seat-handling listeners.
@@ -484,7 +562,7 @@ static void handlePointerCapability(uint32_t capabilities)
{
bool hasPointer = capabilities & WL_SEAT_CAPABILITY_POINTER;
if (!hasPointer && wlWm.pointer)
waylandCleanUpPointer();
waylandCleanUpPointer(true);
else if (hasPointer && !wlWm.pointer)
{
wlWm.pointer = wl_seat_get_pointer(wlWm.seat);
@@ -502,6 +580,16 @@ static void handlePointerCapability(uint32_t capabilities)
if (app_isCaptureMode())
waylandCapturePointer();
else
{
bool confReq;
INTERLOCKED_SECTION(wlWm.surfaceLock,
{
confReq = wlWm.confReq;
});
if (confReq)
waylandGrabPointer();
}
}
}
@@ -578,6 +666,10 @@ bool waylandInputInit(bool allowNoInput)
wlWm.warpSupport, !!wlWm.relativePointerManager,
!!wlWm.pointerConstraints);
LG_LOCK(wlWm.surfaceLock);
wlWm.inputLive = true;
LG_UNLOCK(wlWm.surfaceLock);
wlWm.xkb = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
if (!wlWm.xkb)
DEBUG_WARN("Failed to initialize xkb, keyboard input will not work");
@@ -590,13 +682,15 @@ bool waylandInputInit(bool allowNoInput)
void waylandInputFree(void)
{
LG_LOCK(wlWm.surfaceLock);
wlWm.inputLive = false;
LG_UNLOCK(wlWm.surfaceLock);
if (!wlWm.seat)
return;
waylandUngrabPointer();
if (wlWm.pointer)
waylandCleanUpPointer();
waylandCleanUpPointer(false);
// The only legal way the keyboard can be null is if it never existed.
// When unplugged, the compositor must have an inert object.
@@ -617,59 +711,56 @@ void waylandInputFree(void)
void waylandGrabPointer(void)
{
if (!wlWm.pointer ||
!wlWm.relativePointerManager || !wlWm.pointerConstraints)
{
MTRACE("grab drop pointer=%d relMgr=%d constraints=%d",
!!wlWm.pointer, !!wlWm.relativePointerManager,
!!wlWm.pointerConstraints);
return;
}
if (!wlWm.warpSupport && !wlWm.relativePointer)
{
struct zwp_relative_pointer_v1 * relative =
zwp_relative_pointer_manager_v1_get_relative_pointer(
wlWm.relativePointerManager, wlWm.pointer);
zwp_relative_pointer_v1_add_listener(relative,
&relativePointerListener, NULL);
const uint32_t relativeId = proxyId(relative);
wlWm.relativePointer = relative;
MTRACE("rel req id=%u why=grab", relativeId);
}
uint32_t confId = 0;
uint64_t confSeq = 0;
bool haveConf = false;
bool haveLock = false;
uint32_t relativeId = 0;
uint32_t confId = 0;
uint64_t confSeq = 0;
bool haveConf = false;
bool haveLock = false;
bool haveSync = false;
bool havePointer = false;
bool haveConstraints = false;
INTERLOCKED_SECTION(wlWm.surfaceLock,
{
if (!wlWm.confinedPointer && !wlWm.lockedPointer)
wlWm.confReq = true;
if (wlWm.pointer && !wlWm.warpSupport && !wlWm.relativePointer &&
wlWm.relativePointerManager)
{
wlWm.relativePointer =
zwp_relative_pointer_manager_v1_get_relative_pointer(
wlWm.relativePointerManager, wlWm.pointer);
zwp_relative_pointer_v1_add_listener(wlWm.relativePointer,
&relativePointerListener, NULL);
relativeId = proxyId(wlWm.relativePointer);
}
if (wlWm.pointer && wlWm.pointerConstraints &&
!wlWm.confinedPointer && !wlWm.lockedPointer && !wlWm.confSync)
{
atomic_store_explicit(&wlWm.confActive, false,
memory_order_release);
wlWm.confinedPointer = createConfine(NULL);
confId = proxyId(wlWm.confinedPointer);
confSeq = app_mouseSeq();
}
haveConf = !!wlWm.confinedPointer;
haveLock = !!wlWm.lockedPointer;
haveConf = !!wlWm.confinedPointer;
haveLock = !!wlWm.lockedPointer;
haveSync = !!wlWm.confSync;
havePointer = !!wlWm.pointer;
haveConstraints = !!wlWm.pointerConstraints;
});
if (relativeId)
MTRACE("rel req id=%u why=grab", relativeId);
if (confId)
MLOG(confSeq, "conf req id=%u why=grab", confId);
else
MTRACE("conf skip conf=%d lock=%d", haveConf, haveLock);
MTRACE("conf skip pointer=%d constraints=%d conf=%d lock=%d sync=%d",
havePointer, haveConstraints, haveConf, haveLock, haveSync);
}
inline static uint32_t internalUngrabPointer(bool lock, uint64_t * traceSeq)
inline static uint32_t destroyConfine(uint64_t * traceSeq)
{
*traceSeq = 0;
if (!wlWm.pointer)
return 0;
if (lock)
LG_LOCK(wlWm.surfaceLock);
uint32_t confId = 0;
if (wlWm.confinedPointer)
@@ -679,34 +770,57 @@ inline static uint32_t internalUngrabPointer(bool lock, uint64_t * traceSeq)
wlWm.confinedPointer = NULL;
atomic_store_explicit(&wlWm.confActive, false, memory_order_release);
*traceSeq = app_mouseSeq();
}
if (lock)
LG_UNLOCK(wlWm.surfaceLock);
if (!wlWm.warpSupport)
{
if (!wlWm.relativePointer)
{
wlWm.relativePointer =
zwp_relative_pointer_manager_v1_get_relative_pointer(
wlWm.relativePointerManager, wlWm.pointer);
zwp_relative_pointer_v1_add_listener(wlWm.relativePointer,
&relativePointerListener, NULL);
}
app_resyncMouseBasic();
app_handleMouseBasic();
if (!queueConfSync())
DEBUG_ERROR("Failed to queue pointer release sync");
}
return confId;
}
static void ungrabBasic(void)
{
if (wlWm.warpSupport)
return;
uint32_t relativeId = 0;
LG_LOCK(wlWm.surfaceLock);
if (wlWm.pointer && !wlWm.relativePointer &&
wlWm.relativePointerManager)
{
wlWm.relativePointer =
zwp_relative_pointer_manager_v1_get_relative_pointer(
wlWm.relativePointerManager, wlWm.pointer);
zwp_relative_pointer_v1_add_listener(wlWm.relativePointer,
&relativePointerListener, NULL);
relativeId = proxyId(wlWm.relativePointer);
}
LG_UNLOCK(wlWm.surfaceLock);
if (relativeId)
MTRACE("rel req id=%u why=ungrab", relativeId);
app_resyncMouseBasic();
app_handleMouseBasic();
}
void waylandUngrabPointer(void)
{
bool notify;
uint64_t confSeq;
const uint32_t confId = internalUngrabPointer(true, &confSeq);
uint32_t confId;
LG_LOCK(wlWm.surfaceLock);
wlWm.confReq = false;
confId = destroyConfine(&confSeq);
notify = !wlWm.confSync && wlWm.inputLive;
LG_UNLOCK(wlWm.surfaceLock);
MLOG(confSeq, "conf destroy id=%u why=ungrab", confId);
ungrabBasic();
if (notify)
app_handleGrabEvent(false);
}
void waylandCapturePointer(void)
@@ -724,20 +838,17 @@ void waylandCapturePointer(void)
uint64_t lockSeq = 0;
INTERLOCKED_SECTION(wlWm.surfaceLock,
{
if (wlWm.confinedPointer)
{
confId = proxyId(wlWm.confinedPointer);
zwp_confined_pointer_v1_destroy(wlWm.confinedPointer);
wlWm.confinedPointer = NULL;
atomic_store_explicit(&wlWm.confActive, false,
memory_order_release);
confSeq = app_mouseSeq();
}
wlWm.confReq = true;
confId = destroyConfine(&confSeq);
atomic_store_explicit(&wlWm.lockActive, false, memory_order_release);
wlWm.lockedPointer = createLock();
lockId = proxyId(wlWm.lockedPointer);
lockSeq = app_mouseSeq();
if (wlWm.pointer && !wlWm.lockedPointer)
{
atomic_store_explicit(&wlWm.lockActive, false,
memory_order_release);
wlWm.lockedPointer = createLock();
lockId = proxyId(wlWm.lockedPointer);
lockSeq = app_mouseSeq();
}
});
MLOG(confSeq, "conf destroy id=%u why=capture", confId);
@@ -772,20 +883,31 @@ void waylandUncapturePointer(void)
* - if the user has opted to use captureInputOnly mode.
*/
if (!wlWm.warpSupport || !app_isFormatValid() || app_isCaptureOnlyMode())
confDropId = internalUngrabPointer(false, &confDropSeq);
else if (wlWm.pointer)
{
atomic_store_explicit(&wlWm.confActive, false,
memory_order_release);
wlWm.confinedPointer = createConfine(NULL);
confReqId = proxyId(wlWm.confinedPointer);
confReqSeq = app_mouseSeq();
wlWm.confReq = false;
confDropId = destroyConfine(&confDropSeq);
}
else
{
wlWm.confReq = true;
if (wlWm.pointer && !wlWm.confSync && !wlWm.confinedPointer)
{
wlWm.confinedPointer = createConfine(NULL);
confReqId = proxyId(wlWm.confinedPointer);
confReqSeq = app_mouseSeq();
}
}
});
MLOG(lockSeq, "lock destroy id=%u why=uncapture", lockId);
MLOG(confDropSeq, "conf destroy id=%u why=uncapture", confDropId);
MLOG(confReqSeq, "conf req id=%u why=uncapture", confReqId);
ungrabBasic();
}
bool waylandIsPointerGrabbed(void)
{
return atomic_load_explicit(&wlWm.confActive, memory_order_acquire);
}
bool waylandIsPointerCaptured(void)