SDL_events.c
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../SDL_internal.h"
/* General event handling code for SDL */
#include "SDL.h"
#include "SDL_events.h"
#include "SDL_thread.h"
#include "SDL_events_c.h"
#include "../timer/SDL_timer_c.h"
#if !SDL_JOYSTICK_DISABLED
#include "../joystick/SDL_joystick_c.h"
#endif
#include "../video/SDL_sysvideo.h"
#include "SDL_syswm.h"
/* An arbitrary limit so we don't have unbounded growth */
#define SDL_MAX_QUEUED_EVENTS 65535
typedef struct SDL_EventWatcher {
SDL_EventFilter callback;
void *userdata;
SDL_bool removed;
} SDL_EventWatcher;
static SDL_mutex *SDL_event_watchers_lock;
static SDL_EventWatcher SDL_EventOK;
static SDL_EventWatcher *SDL_event_watchers = NULL;
static int SDL_event_watchers_count = 0;
static SDL_bool SDL_event_watchers_dispatching = SDL_FALSE;
static SDL_bool SDL_event_watchers_removed = SDL_FALSE;
typedef struct {
Uint32 bits[8];
} SDL_DisabledEventBlock;
static SDL_DisabledEventBlock *SDL_disabled_events[256];
static Uint32 SDL_userevents = SDL_USEREVENT;
/* Private data -- event queue */
typedef struct _SDL_EventEntry
{
SDL_Event event;
SDL_SysWMmsg msg;
struct _SDL_EventEntry *prev;
struct _SDL_EventEntry *next;
} SDL_EventEntry;
typedef struct _SDL_SysWMEntry
{
SDL_SysWMmsg msg;
struct _SDL_SysWMEntry *next;
} SDL_SysWMEntry;
static struct
{
SDL_mutex *lock;
SDL_atomic_t active;
SDL_atomic_t count;
int max_events_seen;
SDL_EventEntry *head;
SDL_EventEntry *tail;
SDL_EventEntry *free;
SDL_SysWMEntry *wmmsg_used;
SDL_SysWMEntry *wmmsg_free;
} SDL_EventQ = { NULL, { 1 }, { 0 }, 0, NULL, NULL, NULL, NULL, NULL };
/* 0 (default) means no logging, 1 means logging, 2 means logging with mouse and finger motion */
static int SDL_DoEventLogging = 0;
static void SDLCALL
SDL_EventLoggingChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
{
SDL_DoEventLogging = (hint && *hint) ? SDL_max(SDL_min(SDL_atoi(hint), 2), 0) : 0;
}
static void
SDL_LogEvent(const SDL_Event *event)
{
char name[32];
char details[128];
/* mouse/finger motion are spammy, ignore these if they aren't demanded. */
if ( (SDL_DoEventLogging < 2) &&
( (event->type == SDL_MOUSEMOTION) ||
(event->type == SDL_FINGERMOTION) ) ) {
return;
}
/* this is to make SDL_snprintf() calls cleaner. */
#define uint unsigned int
name[0] = '\0';
details[0] = '\0';
/* !!! FIXME: This code is kinda ugly, sorry. */
if ((event->type >= SDL_USEREVENT) && (event->type <= SDL_LASTEVENT)) {
char plusstr[16];
SDL_strlcpy(name, "SDL_USEREVENT", sizeof (name));
if (event->type > SDL_USEREVENT) {
SDL_snprintf(plusstr, sizeof (plusstr), "+%u", ((uint) event->type) - SDL_USEREVENT);
} else {
plusstr[0] = '\0';
}
SDL_snprintf(details, sizeof (details), "%s (timestamp=%u windowid=%u code=%d data1=%p data2=%p)",
plusstr, (uint) event->user.timestamp, (uint) event->user.windowID,
(int) event->user.code, event->user.data1, event->user.data2);
}
switch (event->type) {
#define SDL_EVENT_CASE(x) case x: SDL_strlcpy(name, #x, sizeof (name));
SDL_EVENT_CASE(SDL_FIRSTEVENT) SDL_strlcpy(details, " (THIS IS PROBABLY A BUG!)", sizeof (details)); break;
SDL_EVENT_CASE(SDL_QUIT) SDL_snprintf(details, sizeof (details), " (timestamp=%u)", (uint) event->quit.timestamp); break;
SDL_EVENT_CASE(SDL_APP_TERMINATING) break;
SDL_EVENT_CASE(SDL_APP_LOWMEMORY) break;
SDL_EVENT_CASE(SDL_APP_WILLENTERBACKGROUND) break;
SDL_EVENT_CASE(SDL_APP_DIDENTERBACKGROUND) break;
SDL_EVENT_CASE(SDL_APP_WILLENTERFOREGROUND) break;
SDL_EVENT_CASE(SDL_APP_DIDENTERFOREGROUND) break;
SDL_EVENT_CASE(SDL_KEYMAPCHANGED) break;
SDL_EVENT_CASE(SDL_CLIPBOARDUPDATE) break;
SDL_EVENT_CASE(SDL_RENDER_TARGETS_RESET) break;
SDL_EVENT_CASE(SDL_RENDER_DEVICE_RESET) break;
SDL_EVENT_CASE(SDL_WINDOWEVENT) {
char name2[64];
switch(event->window.event) {
case SDL_WINDOWEVENT_NONE: SDL_strlcpy(name2, "SDL_WINDOWEVENT_NONE (THIS IS PROBABLY A BUG!)", sizeof (name2)); break;
#define SDL_WINDOWEVENT_CASE(x) case x: SDL_strlcpy(name2, #x, sizeof (name2)); break
SDL_WINDOWEVENT_CASE(SDL_WINDOWEVENT_SHOWN);
SDL_WINDOWEVENT_CASE(SDL_WINDOWEVENT_HIDDEN);
SDL_WINDOWEVENT_CASE(SDL_WINDOWEVENT_EXPOSED);
SDL_WINDOWEVENT_CASE(SDL_WINDOWEVENT_MOVED);
SDL_WINDOWEVENT_CASE(SDL_WINDOWEVENT_RESIZED);
SDL_WINDOWEVENT_CASE(SDL_WINDOWEVENT_SIZE_CHANGED);
SDL_WINDOWEVENT_CASE(SDL_WINDOWEVENT_MINIMIZED);
SDL_WINDOWEVENT_CASE(SDL_WINDOWEVENT_MAXIMIZED);
SDL_WINDOWEVENT_CASE(SDL_WINDOWEVENT_RESTORED);
SDL_WINDOWEVENT_CASE(SDL_WINDOWEVENT_ENTER);
SDL_WINDOWEVENT_CASE(SDL_WINDOWEVENT_LEAVE);
SDL_WINDOWEVENT_CASE(SDL_WINDOWEVENT_FOCUS_GAINED);
SDL_WINDOWEVENT_CASE(SDL_WINDOWEVENT_FOCUS_LOST);
SDL_WINDOWEVENT_CASE(SDL_WINDOWEVENT_CLOSE);
SDL_WINDOWEVENT_CASE(SDL_WINDOWEVENT_TAKE_FOCUS);
SDL_WINDOWEVENT_CASE(SDL_WINDOWEVENT_HIT_TEST);
#undef SDL_WINDOWEVENT_CASE
default: SDL_strlcpy(name2, "UNKNOWN (bug? fixme?)", sizeof (name2)); break;
}
SDL_snprintf(details, sizeof (details), " (timestamp=%u windowid=%u event=%s data1=%d data2=%d)",
(uint) event->window.timestamp, (uint) event->window.windowID, name2, (int) event->window.data1, (int) event->window.data2);
break;
}
SDL_EVENT_CASE(SDL_SYSWMEVENT)
/* !!! FIXME: we don't delve further at the moment. */
SDL_snprintf(details, sizeof (details), " (timestamp=%u)", (uint) event->syswm.timestamp);
break;
#define PRINT_KEY_EVENT(event) \
SDL_snprintf(details, sizeof (details), " (timestamp=%u windowid=%u state=%s repeat=%s scancode=%u keycode=%u mod=%u)", \
(uint) event->key.timestamp, (uint) event->key.windowID, \
event->key.state == SDL_PRESSED ? "pressed" : "released", \
event->key.repeat ? "true" : "false", \
(uint) event->key.keysym.scancode, \
(uint) event->key.keysym.sym, \
(uint) event->key.keysym.mod)
SDL_EVENT_CASE(SDL_KEYDOWN) PRINT_KEY_EVENT(event); break;
SDL_EVENT_CASE(SDL_KEYUP) PRINT_KEY_EVENT(event); break;
#undef PRINT_KEY_EVENT
SDL_EVENT_CASE(SDL_TEXTEDITING)
SDL_snprintf(details, sizeof (details), " (timestamp=%u windowid=%u text='%s' start=%d length=%d)",
(uint) event->edit.timestamp, (uint) event->edit.windowID,
event->edit.text, (int) event->edit.start, (int) event->edit.length);
break;
SDL_EVENT_CASE(SDL_TEXTINPUT)
SDL_snprintf(details, sizeof (details), " (timestamp=%u windowid=%u text='%s')", (uint) event->text.timestamp, (uint) event->text.windowID, event->text.text);
break;
SDL_EVENT_CASE(SDL_MOUSEMOTION)
SDL_snprintf(details, sizeof (details), " (timestamp=%u windowid=%u which=%u state=%u x=%d y=%d xrel=%d yrel=%d)",
(uint) event->motion.timestamp, (uint) event->motion.windowID,
(uint) event->motion.which, (uint) event->motion.state,
(int) event->motion.x, (int) event->motion.y,
(int) event->motion.xrel, (int) event->motion.yrel);
break;
#define PRINT_MBUTTON_EVENT(event) \
SDL_snprintf(details, sizeof (details), " (timestamp=%u windowid=%u which=%u button=%u state=%s clicks=%u x=%d y=%d)", \
(uint) event->button.timestamp, (uint) event->button.windowID, \
(uint) event->button.which, (uint) event->button.button, \
event->button.state == SDL_PRESSED ? "pressed" : "released", \
(uint) event->button.clicks, (int) event->button.x, (int) event->button.y)
SDL_EVENT_CASE(SDL_MOUSEBUTTONDOWN) PRINT_MBUTTON_EVENT(event); break;
SDL_EVENT_CASE(SDL_MOUSEBUTTONUP) PRINT_MBUTTON_EVENT(event); break;
#undef PRINT_MBUTTON_EVENT
SDL_EVENT_CASE(SDL_MOUSEWHEEL)
SDL_snprintf(details, sizeof (details), " (timestamp=%u windowid=%u which=%u x=%d y=%d direction=%s)",
(uint) event->wheel.timestamp, (uint) event->wheel.windowID,
(uint) event->wheel.which, (int) event->wheel.x, (int) event->wheel.y,
event->wheel.direction == SDL_MOUSEWHEEL_NORMAL ? "normal" : "flipped");
break;
SDL_EVENT_CASE(SDL_JOYAXISMOTION)
SDL_snprintf(details, sizeof (details), " (timestamp=%u which=%d axis=%u value=%d)",
(uint) event->jaxis.timestamp, (int) event->jaxis.which,
(uint) event->jaxis.axis, (int) event->jaxis.value);
break;
SDL_EVENT_CASE(SDL_JOYBALLMOTION)
SDL_snprintf(details, sizeof (details), " (timestamp=%u which=%d ball=%u xrel=%d yrel=%d)",
(uint) event->jball.timestamp, (int) event->jball.which,
(uint) event->jball.ball, (int) event->jball.xrel, (int) event->jball.yrel);
break;
SDL_EVENT_CASE(SDL_JOYHATMOTION)
SDL_snprintf(details, sizeof (details), " (timestamp=%u which=%d hat=%u value=%u)",
(uint) event->jhat.timestamp, (int) event->jhat.which,
(uint) event->jhat.hat, (uint) event->jhat.value);
break;
#define PRINT_JBUTTON_EVENT(event) \
SDL_snprintf(details, sizeof (details), " (timestamp=%u which=%d button=%u state=%s)", \
(uint) event->jbutton.timestamp, (int) event->jbutton.which, \
(uint) event->jbutton.button, event->jbutton.state == SDL_PRESSED ? "pressed" : "released")
SDL_EVENT_CASE(SDL_JOYBUTTONDOWN) PRINT_JBUTTON_EVENT(event); break;
SDL_EVENT_CASE(SDL_JOYBUTTONUP) PRINT_JBUTTON_EVENT(event); break;
#undef PRINT_JBUTTON_EVENT
#define PRINT_JOYDEV_EVENT(event) SDL_snprintf(details, sizeof (details), " (timestamp=%u which=%d)", (uint) event->jdevice.timestamp, (int) event->jdevice.which)
SDL_EVENT_CASE(SDL_JOYDEVICEADDED) PRINT_JOYDEV_EVENT(event); break;
SDL_EVENT_CASE(SDL_JOYDEVICEREMOVED) PRINT_JOYDEV_EVENT(event); break;
#undef PRINT_JOYDEV_EVENT
SDL_EVENT_CASE(SDL_CONTROLLERAXISMOTION)
SDL_snprintf(details, sizeof (details), " (timestamp=%u which=%d axis=%u value=%d)",
(uint) event->caxis.timestamp, (int) event->caxis.which,
(uint) event->caxis.axis, (int) event->caxis.value);
break;
#define PRINT_CBUTTON_EVENT(event) \
SDL_snprintf(details, sizeof (details), " (timestamp=%u which=%d button=%u state=%s)", \
(uint) event->cbutton.timestamp, (int) event->cbutton.which, \
(uint) event->cbutton.button, event->cbutton.state == SDL_PRESSED ? "pressed" : "released")
SDL_EVENT_CASE(SDL_CONTROLLERBUTTONDOWN) PRINT_CBUTTON_EVENT(event); break;
SDL_EVENT_CASE(SDL_CONTROLLERBUTTONUP) PRINT_CBUTTON_EVENT(event); break;
#undef PRINT_CBUTTON_EVENT
#define PRINT_CONTROLLERDEV_EVENT(event) SDL_snprintf(details, sizeof (details), " (timestamp=%u which=%d)", (uint) event->cdevice.timestamp, (int) event->cdevice.which)
SDL_EVENT_CASE(SDL_CONTROLLERDEVICEADDED) PRINT_CONTROLLERDEV_EVENT(event); break;
SDL_EVENT_CASE(SDL_CONTROLLERDEVICEREMOVED) PRINT_CONTROLLERDEV_EVENT(event); break;
SDL_EVENT_CASE(SDL_CONTROLLERDEVICEREMAPPED) PRINT_CONTROLLERDEV_EVENT(event); break;
#undef PRINT_CONTROLLERDEV_EVENT
#define PRINT_FINGER_EVENT(event) \
SDL_snprintf(details, sizeof (details), " (timestamp=%u touchid=%"SDL_PRIs64" fingerid=%"SDL_PRIs64" x=%f y=%f dx=%f dy=%f pressure=%f)", \
(uint) event->tfinger.timestamp, event->tfinger.touchId, \
event->tfinger.fingerId, event->tfinger.x, event->tfinger.y, \
event->tfinger.dx, event->tfinger.dy, event->tfinger.pressure)
SDL_EVENT_CASE(SDL_FINGERDOWN) PRINT_FINGER_EVENT(event); break;
SDL_EVENT_CASE(SDL_FINGERUP) PRINT_FINGER_EVENT(event); break;
SDL_EVENT_CASE(SDL_FINGERMOTION) PRINT_FINGER_EVENT(event); break;
#undef PRINT_FINGER_EVENT
#define PRINT_DOLLAR_EVENT(event) \
SDL_snprintf(details, sizeof (details), " (timestamp=%u touchid=%"SDL_PRIs64" gestureid=%"SDL_PRIs64" numfingers=%u error=%f x=%f y=%f)", \
(uint) event->dgesture.timestamp, event->dgesture.touchId, \
event->dgesture.gestureId, (uint) event->dgesture.numFingers, \
event->dgesture.error, event->dgesture.x, event->dgesture.y);
SDL_EVENT_CASE(SDL_DOLLARGESTURE) PRINT_DOLLAR_EVENT(event); break;
SDL_EVENT_CASE(SDL_DOLLARRECORD) PRINT_DOLLAR_EVENT(event); break;
#undef PRINT_DOLLAR_EVENT
SDL_EVENT_CASE(SDL_MULTIGESTURE)
SDL_snprintf(details, sizeof (details), " (timestamp=%u touchid=%"SDL_PRIs64" dtheta=%f ddist=%f x=%f y=%f numfingers=%u)",
(uint) event->mgesture.timestamp, event->mgesture.touchId,
event->mgesture.dTheta, event->mgesture.dDist,
event->mgesture.x, event->mgesture.y, (uint) event->mgesture.numFingers);
break;
#define PRINT_DROP_EVENT(event) SDL_snprintf(details, sizeof (details), " (file='%s' timestamp=%u windowid=%u)", event->drop.file, (uint) event->drop.timestamp, (uint) event->drop.windowID)
SDL_EVENT_CASE(SDL_DROPFILE) PRINT_DROP_EVENT(event); break;
SDL_EVENT_CASE(SDL_DROPTEXT) PRINT_DROP_EVENT(event); break;
SDL_EVENT_CASE(SDL_DROPBEGIN) PRINT_DROP_EVENT(event); break;
SDL_EVENT_CASE(SDL_DROPCOMPLETE) PRINT_DROP_EVENT(event); break;
#undef PRINT_DROP_EVENT
#define PRINT_AUDIODEV_EVENT(event) SDL_snprintf(details, sizeof (details), " (timestamp=%u which=%u iscapture=%s)", (uint) event->adevice.timestamp, (uint) event->adevice.which, event->adevice.iscapture ? "true" : "false");
SDL_EVENT_CASE(SDL_AUDIODEVICEADDED) PRINT_AUDIODEV_EVENT(event); break;
SDL_EVENT_CASE(SDL_AUDIODEVICEREMOVED) PRINT_AUDIODEV_EVENT(event); break;
#undef PRINT_AUDIODEV_EVENT
#undef SDL_EVENT_CASE
default:
if (!name[0]) {
SDL_strlcpy(name, "UNKNOWN", sizeof (name));
SDL_snprintf(details, sizeof (details), " #%u! (Bug? FIXME?)", (uint) event->type);
}
break;
}
if (name[0]) {
SDL_Log("SDL EVENT: %s%s", name, details);
}
#undef uint
}
/* Public functions */
void
SDL_StopEventLoop(void)
{
const char *report = SDL_GetHint("SDL_EVENT_QUEUE_STATISTICS");
int i;
SDL_EventEntry *entry;
SDL_SysWMEntry *wmmsg;
if (SDL_EventQ.lock) {
SDL_LockMutex(SDL_EventQ.lock);
}
SDL_AtomicSet(&SDL_EventQ.active, 0);
if (report && SDL_atoi(report)) {
SDL_Log("SDL EVENT QUEUE: Maximum events in-flight: %d\n",
SDL_EventQ.max_events_seen);
}
/* Clean out EventQ */
for (entry = SDL_EventQ.head; entry; ) {
SDL_EventEntry *next = entry->next;
SDL_free(entry);
entry = next;
}
for (entry = SDL_EventQ.free; entry; ) {
SDL_EventEntry *next = entry->next;
SDL_free(entry);
entry = next;
}
for (wmmsg = SDL_EventQ.wmmsg_used; wmmsg; ) {
SDL_SysWMEntry *next = wmmsg->next;
SDL_free(wmmsg);
wmmsg = next;
}
for (wmmsg = SDL_EventQ.wmmsg_free; wmmsg; ) {
SDL_SysWMEntry *next = wmmsg->next;
SDL_free(wmmsg);
wmmsg = next;
}
SDL_AtomicSet(&SDL_EventQ.count, 0);
SDL_EventQ.max_events_seen = 0;
SDL_EventQ.head = NULL;
SDL_EventQ.tail = NULL;
SDL_EventQ.free = NULL;
SDL_EventQ.wmmsg_used = NULL;
SDL_EventQ.wmmsg_free = NULL;
/* Clear disabled event state */
for (i = 0; i < SDL_arraysize(SDL_disabled_events); ++i) {
SDL_free(SDL_disabled_events[i]);
SDL_disabled_events[i] = NULL;
}
if (SDL_event_watchers_lock) {
SDL_DestroyMutex(SDL_event_watchers_lock);
SDL_event_watchers_lock = NULL;
}
if (SDL_event_watchers) {
SDL_free(SDL_event_watchers);
SDL_event_watchers = NULL;
SDL_event_watchers_count = 0;
}
SDL_zero(SDL_EventOK);
if (SDL_EventQ.lock) {
SDL_UnlockMutex(SDL_EventQ.lock);
SDL_DestroyMutex(SDL_EventQ.lock);
SDL_EventQ.lock = NULL;
}
}
/* This function (and associated calls) may be called more than once */
int
SDL_StartEventLoop(void)
{
/* We'll leave the event queue alone, since we might have gotten
some important events at launch (like SDL_DROPFILE)
FIXME: Does this introduce any other bugs with events at startup?
*/
/* Create the lock and set ourselves active */
#if !SDL_THREADS_DISABLED
if (!SDL_EventQ.lock) {
SDL_EventQ.lock = SDL_CreateMutex();
if (SDL_EventQ.lock == NULL) {
return -1;
}
}
if (!SDL_event_watchers_lock) {
SDL_event_watchers_lock = SDL_CreateMutex();
if (SDL_event_watchers_lock == NULL) {
return -1;
}
}
#endif /* !SDL_THREADS_DISABLED */
/* Process most event types */
SDL_EventState(SDL_TEXTINPUT, SDL_DISABLE);
SDL_EventState(SDL_TEXTEDITING, SDL_DISABLE);
SDL_EventState(SDL_SYSWMEVENT, SDL_DISABLE);
#if 0 /* Leave these events enabled so apps can respond to items being dragged onto them at startup */
SDL_EventState(SDL_DROPFILE, SDL_DISABLE);
SDL_EventState(SDL_DROPTEXT, SDL_DISABLE);
#endif
SDL_AtomicSet(&SDL_EventQ.active, 1);
return 0;
}
/* Add an event to the event queue -- called with the queue locked */
static int
SDL_AddEvent(SDL_Event * event)
{
SDL_EventEntry *entry;
const int initial_count = SDL_AtomicGet(&SDL_EventQ.count);
int final_count;
if (initial_count >= SDL_MAX_QUEUED_EVENTS) {
SDL_SetError("Event queue is full (%d events)", initial_count);
return 0;
}
if (SDL_EventQ.free == NULL) {
entry = (SDL_EventEntry *)SDL_malloc(sizeof(*entry));
if (!entry) {
return 0;
}
} else {
entry = SDL_EventQ.free;
SDL_EventQ.free = entry->next;
}
if (SDL_DoEventLogging) {
SDL_LogEvent(event);
}
entry->event = *event;
if (event->type == SDL_SYSWMEVENT) {
entry->msg = *event->syswm.msg;
entry->event.syswm.msg = &entry->msg;
}
if (SDL_EventQ.tail) {
SDL_EventQ.tail->next = entry;
entry->prev = SDL_EventQ.tail;
SDL_EventQ.tail = entry;
entry->next = NULL;
} else {
SDL_assert(!SDL_EventQ.head);
SDL_EventQ.head = entry;
SDL_EventQ.tail = entry;
entry->prev = NULL;
entry->next = NULL;
}
final_count = SDL_AtomicAdd(&SDL_EventQ.count, 1) + 1;
if (final_count > SDL_EventQ.max_events_seen) {
SDL_EventQ.max_events_seen = final_count;
}
return 1;
}
/* Remove an event from the queue -- called with the queue locked */
static void
SDL_CutEvent(SDL_EventEntry *entry)
{
if (entry->prev) {
entry->prev->next = entry->next;
}
if (entry->next) {
entry->next->prev = entry->prev;
}
if (entry == SDL_EventQ.head) {
SDL_assert(entry->prev == NULL);
SDL_EventQ.head = entry->next;
}
if (entry == SDL_EventQ.tail) {
SDL_assert(entry->next == NULL);
SDL_EventQ.tail = entry->prev;
}
entry->next = SDL_EventQ.free;
SDL_EventQ.free = entry;
SDL_assert(SDL_AtomicGet(&SDL_EventQ.count) > 0);
SDL_AtomicAdd(&SDL_EventQ.count, -1);
}
/* Lock the event queue, take a peep at it, and unlock it */
int
SDL_PeepEvents(SDL_Event * events, int numevents, SDL_eventaction action,
Uint32 minType, Uint32 maxType)
{
int i, used;
/* Don't look after we've quit */
if (!SDL_AtomicGet(&SDL_EventQ.active)) {
/* We get a few spurious events at shutdown, so don't warn then */
if (action != SDL_ADDEVENT) {
SDL_SetError("The event system has been shut down");
}
return (-1);
}
/* Lock the event queue */
used = 0;
if (!SDL_EventQ.lock || SDL_LockMutex(SDL_EventQ.lock) == 0) {
if (action == SDL_ADDEVENT) {
for (i = 0; i < numevents; ++i) {
used += SDL_AddEvent(&events[i]);
}
} else {
SDL_EventEntry *entry, *next;
SDL_SysWMEntry *wmmsg, *wmmsg_next;
Uint32 type;
if (action == SDL_GETEVENT) {
/* Clean out any used wmmsg data
FIXME: Do we want to retain the data for some period of time?
*/
for (wmmsg = SDL_EventQ.wmmsg_used; wmmsg; wmmsg = wmmsg_next) {
wmmsg_next = wmmsg->next;
wmmsg->next = SDL_EventQ.wmmsg_free;
SDL_EventQ.wmmsg_free = wmmsg;
}
SDL_EventQ.wmmsg_used = NULL;
}
for (entry = SDL_EventQ.head; entry && (!events || used < numevents); entry = next) {
next = entry->next;
type = entry->event.type;
if (minType <= type && type <= maxType) {
if (events) {
events[used] = entry->event;
if (entry->event.type == SDL_SYSWMEVENT) {
/* We need to copy the wmmsg somewhere safe.
For now we'll guarantee it's valid at least until
the next call to SDL_PeepEvents()
*/
if (SDL_EventQ.wmmsg_free) {
wmmsg = SDL_EventQ.wmmsg_free;
SDL_EventQ.wmmsg_free = wmmsg->next;
} else {
wmmsg = (SDL_SysWMEntry *)SDL_malloc(sizeof(*wmmsg));
}
wmmsg->msg = *entry->event.syswm.msg;
wmmsg->next = SDL_EventQ.wmmsg_used;
SDL_EventQ.wmmsg_used = wmmsg;
events[used].syswm.msg = &wmmsg->msg;
}
if (action == SDL_GETEVENT) {
SDL_CutEvent(entry);
}
}
++used;
}
}
}
if (SDL_EventQ.lock) {
SDL_UnlockMutex(SDL_EventQ.lock);
}
} else {
return SDL_SetError("Couldn't lock event queue");
}
return (used);
}
SDL_bool
SDL_HasEvent(Uint32 type)
{
return (SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, type, type) > 0);
}
SDL_bool
SDL_HasEvents(Uint32 minType, Uint32 maxType)
{
return (SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, minType, maxType) > 0);
}
void
SDL_FlushEvent(Uint32 type)
{
SDL_FlushEvents(type, type);
}
void
SDL_FlushEvents(Uint32 minType, Uint32 maxType)
{
/* !!! FIXME: we need to manually SDL_free() the strings in TEXTINPUT and
drag'n'drop events if we're flushing them without passing them to the
app, but I don't know if this is the right place to do that. */
/* Don't look after we've quit */
if (!SDL_AtomicGet(&SDL_EventQ.active)) {
return;
}
/* Make sure the events are current */
#if 0
/* Actually, we can't do this since we might be flushing while processing
a resize event, and calling this might trigger further resize events.
*/
SDL_PumpEvents();
#endif
/* Lock the event queue */
if (!SDL_EventQ.lock || SDL_LockMutex(SDL_EventQ.lock) == 0) {
SDL_EventEntry *entry, *next;
Uint32 type;
for (entry = SDL_EventQ.head; entry; entry = next) {
next = entry->next;
type = entry->event.type;
if (minType <= type && type <= maxType) {
SDL_CutEvent(entry);
}
}
if (SDL_EventQ.lock) {
SDL_UnlockMutex(SDL_EventQ.lock);
}
}
}
/* Run the system dependent event loops */
void
SDL_PumpEvents(void)
{
SDL_VideoDevice *_this = SDL_GetVideoDevice();
/* Get events from the video subsystem */
if (_this) {
_this->PumpEvents(_this);
}
#if !SDL_JOYSTICK_DISABLED
/* Check for joystick state change */
if ((!SDL_disabled_events[SDL_JOYAXISMOTION >> 8] || SDL_JoystickEventState(SDL_QUERY))) {
SDL_JoystickUpdate();
}
#endif
#if !SDL_SENSOR_DISABLED
/* Check for sensor state change */
if (!SDL_disabled_events[SDL_SENSORUPDATE >> 8]) {
SDL_SensorUpdate();
}
#endif
SDL_SendPendingSignalEvents(); /* in case we had a signal handler fire, etc. */
}
/* Public functions */
int
SDL_PollEvent(SDL_Event * event)
{
return SDL_WaitEventTimeout(event, 0);
}
int
SDL_WaitEvent(SDL_Event * event)
{
return SDL_WaitEventTimeout(event, -1);
}
int
SDL_WaitEventTimeout(SDL_Event * event, int timeout)
{
Uint32 expiration = 0;
if (timeout > 0)
expiration = SDL_GetTicks() + timeout;
for (;;) {
SDL_PumpEvents();
switch (SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT)) {
case -1:
return 0;
case 0:
if (timeout == 0) {
/* Polling and no events, just return */
return 0;
}
if (timeout > 0 && SDL_TICKS_PASSED(SDL_GetTicks(), expiration)) {
/* Timeout expired and no events */
return 0;
}
SDL_Delay(10);
break;
default:
/* Has events */
return 1;
}
}
}
int
SDL_PushEvent(SDL_Event * event)
{
event->common.timestamp = SDL_GetTicks();
if (SDL_EventOK.callback || SDL_event_watchers_count > 0) {
if (!SDL_event_watchers_lock || SDL_LockMutex(SDL_event_watchers_lock) == 0) {
if (SDL_EventOK.callback && !SDL_EventOK.callback(SDL_EventOK.userdata, event)) {
if (SDL_event_watchers_lock) {
SDL_UnlockMutex(SDL_event_watchers_lock);
}
return 0;
}
if (SDL_event_watchers_count > 0) {
/* Make sure we only dispatch the current watcher list */
int i, event_watchers_count = SDL_event_watchers_count;
SDL_event_watchers_dispatching = SDL_TRUE;
for (i = 0; i < event_watchers_count; ++i) {
if (!SDL_event_watchers[i].removed) {
SDL_event_watchers[i].callback(SDL_event_watchers[i].userdata, event);
}
}
SDL_event_watchers_dispatching = SDL_FALSE;
if (SDL_event_watchers_removed) {
for (i = SDL_event_watchers_count; i--; ) {
if (SDL_event_watchers[i].removed) {
--SDL_event_watchers_count;
if (i < SDL_event_watchers_count) {
SDL_memmove(&SDL_event_watchers[i], &SDL_event_watchers[i+1], (SDL_event_watchers_count - i) * sizeof(SDL_event_watchers[i]));
}
}
}
SDL_event_watchers_removed = SDL_FALSE;
}
}
if (SDL_event_watchers_lock) {
SDL_UnlockMutex(SDL_event_watchers_lock);
}
}
}
if (SDL_PeepEvents(event, 1, SDL_ADDEVENT, 0, 0) <= 0) {
return -1;
}
SDL_GestureProcessEvent(event);
return 1;
}
void
SDL_SetEventFilter(SDL_EventFilter filter, void *userdata)
{
if (!SDL_event_watchers_lock || SDL_LockMutex(SDL_event_watchers_lock) == 0) {
/* Set filter and discard pending events */
SDL_EventOK.callback = filter;
SDL_EventOK.userdata = userdata;
SDL_FlushEvents(SDL_FIRSTEVENT, SDL_LASTEVENT);
if (SDL_event_watchers_lock) {
SDL_UnlockMutex(SDL_event_watchers_lock);
}
}
}
SDL_bool
SDL_GetEventFilter(SDL_EventFilter * filter, void **userdata)
{
SDL_EventWatcher event_ok;
if (!SDL_event_watchers_lock || SDL_LockMutex(SDL_event_watchers_lock) == 0) {
event_ok = SDL_EventOK;
if (SDL_event_watchers_lock) {
SDL_UnlockMutex(SDL_event_watchers_lock);
}
} else {
SDL_zero(event_ok);
}
if (filter) {
*filter = event_ok.callback;
}
if (userdata) {
*userdata = event_ok.userdata;
}
return event_ok.callback ? SDL_TRUE : SDL_FALSE;
}
void
SDL_AddEventWatch(SDL_EventFilter filter, void *userdata)
{
if (!SDL_event_watchers_lock || SDL_LockMutex(SDL_event_watchers_lock) == 0) {
SDL_EventWatcher *event_watchers;
event_watchers = SDL_realloc(SDL_event_watchers, (SDL_event_watchers_count + 1) * sizeof(*event_watchers));
if (event_watchers) {
SDL_EventWatcher *watcher;
SDL_event_watchers = event_watchers;
watcher = &SDL_event_watchers[SDL_event_watchers_count];
watcher->callback = filter;
watcher->userdata = userdata;
watcher->removed = SDL_FALSE;
++SDL_event_watchers_count;
}
if (SDL_event_watchers_lock) {
SDL_UnlockMutex(SDL_event_watchers_lock);
}
}
}
void
SDL_DelEventWatch(SDL_EventFilter filter, void *userdata)
{
if (!SDL_event_watchers_lock || SDL_LockMutex(SDL_event_watchers_lock) == 0) {
int i;
for (i = 0; i < SDL_event_watchers_count; ++i) {
if (SDL_event_watchers[i].callback == filter && SDL_event_watchers[i].userdata == userdata) {
if (SDL_event_watchers_dispatching) {
SDL_event_watchers[i].removed = SDL_TRUE;
SDL_event_watchers_removed = SDL_TRUE;
} else {
--SDL_event_watchers_count;
if (i < SDL_event_watchers_count) {
SDL_memmove(&SDL_event_watchers[i], &SDL_event_watchers[i+1], (SDL_event_watchers_count - i) * sizeof(SDL_event_watchers[i]));
}
}
break;
}
}
if (SDL_event_watchers_lock) {
SDL_UnlockMutex(SDL_event_watchers_lock);
}
}
}
void
SDL_FilterEvents(SDL_EventFilter filter, void *userdata)
{
if (!SDL_EventQ.lock || SDL_LockMutex(SDL_EventQ.lock) == 0) {
SDL_EventEntry *entry, *next;
for (entry = SDL_EventQ.head; entry; entry = next) {
next = entry->next;
if (!filter(userdata, &entry->event)) {
SDL_CutEvent(entry);
}
}
if (SDL_EventQ.lock) {
SDL_UnlockMutex(SDL_EventQ.lock);
}
}
}
Uint8
SDL_EventState(Uint32 type, int state)
{
const SDL_bool isdnd = ((state == SDL_DISABLE) || (state == SDL_ENABLE)) &&
((type == SDL_DROPFILE) || (type == SDL_DROPTEXT));
Uint8 current_state;
Uint8 hi = ((type >> 8) & 0xff);
Uint8 lo = (type & 0xff);
if (SDL_disabled_events[hi] &&
(SDL_disabled_events[hi]->bits[lo/32] & (1 << (lo&31)))) {
current_state = SDL_DISABLE;
} else {
current_state = SDL_ENABLE;
}
if (state != current_state)
{
switch (state) {
case SDL_DISABLE:
/* Disable this event type and discard pending events */
if (!SDL_disabled_events[hi]) {
SDL_disabled_events[hi] = (SDL_DisabledEventBlock*) SDL_calloc(1, sizeof(SDL_DisabledEventBlock));
if (!SDL_disabled_events[hi]) {
/* Out of memory, nothing we can do... */
break;
}
}
SDL_disabled_events[hi]->bits[lo/32] |= (1 << (lo&31));
SDL_FlushEvent(type);
break;
case SDL_ENABLE:
SDL_disabled_events[hi]->bits[lo/32] &= ~(1 << (lo&31));
break;
default:
/* Querying state... */
break;
}
}
/* turn off drag'n'drop support if we've disabled the events.
This might change some UI details at the OS level. */
if (isdnd) {
SDL_ToggleDragAndDropSupport();
}
return current_state;
}
Uint32
SDL_RegisterEvents(int numevents)
{
Uint32 event_base;
if ((numevents > 0) && (SDL_userevents+numevents <= SDL_LASTEVENT)) {
event_base = SDL_userevents;
SDL_userevents += numevents;
} else {
event_base = (Uint32)-1;
}
return event_base;
}
int
SDL_SendAppEvent(SDL_EventType eventType)
{
int posted;
posted = 0;
if (SDL_GetEventState(eventType) == SDL_ENABLE) {
SDL_Event event;
event.type = eventType;
posted = (SDL_PushEvent(&event) > 0);
}
return (posted);
}
int
SDL_SendSysWMEvent(SDL_SysWMmsg * message)
{
int posted;
posted = 0;
if (SDL_GetEventState(SDL_SYSWMEVENT) == SDL_ENABLE) {
SDL_Event event;
SDL_memset(&event, 0, sizeof(event));
event.type = SDL_SYSWMEVENT;
event.syswm.msg = message;
posted = (SDL_PushEvent(&event) > 0);
}
/* Update internal event state */
return (posted);
}
int
SDL_SendKeymapChangedEvent(void)
{
return SDL_SendAppEvent(SDL_KEYMAPCHANGED);
}
int
SDL_EventsInit(void)
{
SDL_AddHintCallback(SDL_HINT_EVENT_LOGGING, SDL_EventLoggingChanged, NULL);
if (SDL_StartEventLoop() < 0) {
SDL_DelHintCallback(SDL_HINT_EVENT_LOGGING, SDL_EventLoggingChanged, NULL);
return -1;
}
SDL_QuitInit();
return 0;
}
void
SDL_EventsQuit(void)
{
SDL_QuitQuit();
SDL_StopEventLoop();
SDL_DelHintCallback(SDL_HINT_EVENT_LOGGING, SDL_EventLoggingChanged, NULL);
}
/* vi: set ts=4 sw=4 expandtab: */
SDL.h
SDL_zero
#define SDL_zero(x)
Definition: SDL_stdinc.h:416
SDL_SysWMmsg
Definition: SDL_syswm.h:138
SDL_CONTROLLERDEVICEREMOVED
@ SDL_CONTROLLERDEVICEREMOVED
Definition: SDL_events.h:124
SDL_memset
#define SDL_memset
Definition: SDL_dynapi_overrides.h:386
SDL_GetEventFilter
SDL_bool SDL_GetEventFilter(SDL_EventFilter *filter, void **userdata)
Definition: SDL_events.c:810
PRINT_DOLLAR_EVENT
#define PRINT_DOLLAR_EVENT(event)
Uint32
uint32_t Uint32
Definition: SDL_stdinc.h:203
SDL_SendSysWMEvent
int SDL_SendSysWMEvent(SDL_SysWMmsg *message)
Definition: SDL_events.c:979
SDL_EventWatcher::callback
SDL_EventFilter callback
Definition: SDL_events.c:40
SDL_events.h
SDL_EventWatcher::removed
SDL_bool removed
Definition: SDL_events.c:42
SDL_strlcpy
#define SDL_strlcpy
Definition: SDL_dynapi_overrides.h:394
SDL_APP_TERMINATING
@ SDL_APP_TERMINATING
Definition: SDL_events.h:63
SDL_APP_DIDENTERBACKGROUND
@ SDL_APP_DIDENTERBACKGROUND
Definition: SDL_events.h:75
SDL_APP_DIDENTERFOREGROUND
@ SDL_APP_DIDENTERFOREGROUND
Definition: SDL_events.h:83
max_events_seen
int max_events_seen
Definition: SDL_events.c:79
tail
SDL_EventEntry * tail
Definition: SDL_events.c:81
SDL_AddEvent
static int SDL_AddEvent(SDL_Event *event)
Definition: SDL_events.c:456
PRINT_MBUTTON_EVENT
#define PRINT_MBUTTON_EVENT(event)
SDL_LockMutex
#define SDL_LockMutex
Definition: SDL_dynapi_overrides.h:260
SDL_EventWatcher::userdata
void * userdata
Definition: SDL_events.c:41
SDL_event_watchers_count
static int SDL_event_watchers_count
Definition: SDL_events.c:48
SDL_ADDEVENT
@ SDL_ADDEVENT
Definition: SDL_events.h:615
NULL
#define NULL
Definition: begin_code.h:167
message
GLuint GLsizei const GLchar * message
Definition: SDL_opengl_glext.h:2483
SDL_FilterEvents
void SDL_FilterEvents(SDL_EventFilter filter, void *userdata)
Definition: SDL_events.c:885
SDL_WINDOWEVENT_FOCUS_LOST
@ SDL_WINDOWEVENT_FOCUS_LOST
Definition: SDL_video.h:166
timeout
GLbitfield GLuint64 timeout
Definition: SDL_opengl_glext.h:1483
SDL_CutEvent
static void SDL_CutEvent(SDL_EventEntry *entry)
Definition: SDL_events.c:510
SDL_KEYUP
@ SDL_KEYUP
Definition: SDL_events.h:97
SDL_WINDOWEVENT_CLOSE
@ SDL_WINDOWEVENT_CLOSE
Definition: SDL_video.h:167
SDL_CONTROLLERBUTTONDOWN
@ SDL_CONTROLLERBUTTONDOWN
Definition: SDL_events.h:121
SDL_SensorUpdate
#define SDL_SensorUpdate
Definition: SDL_dynapi_overrides.h:696
SDL_EventFilter
int(* SDL_EventFilter)(void *userdata, SDL_Event *event)
Definition: SDL_events.h:699
PRINT_JOYDEV_EVENT
#define PRINT_JOYDEV_EVENT(event)
SDL_WINDOWEVENT_ENTER
@ SDL_WINDOWEVENT_ENTER
Definition: SDL_video.h:163
SDL_DOLLARRECORD
@ SDL_DOLLARRECORD
Definition: SDL_events.h:134
SDL_mutex
Definition: SDL_sysmutex.c:29
SDL_ToggleDragAndDropSupport
void SDL_ToggleDragAndDropSupport(void)
Definition: SDL_video.c:1371
_SDL_SysWMEntry::next
struct _SDL_SysWMEntry * next
Definition: SDL_events.c:71
SDLCALL
#define SDLCALL
Definition: SDL_internal.h:49
SDL_MOUSEBUTTONUP
@ SDL_MOUSEBUTTONUP
Definition: SDL_events.h:107
SDL_realloc
#define SDL_realloc
Definition: SDL_dynapi_overrides.h:376
SDL_WINDOWEVENT_RESIZED
@ SDL_WINDOWEVENT_RESIZED
Definition: SDL_video.h:155
SDL_TEXTEDITING
@ SDL_TEXTEDITING
Definition: SDL_events.h:98
SDL_CreateMutex
#define SDL_CreateMutex
Definition: SDL_dynapi_overrides.h:259
wmmsg_free
SDL_SysWMEntry * wmmsg_free
Definition: SDL_events.c:84
SDL_SysWMmsg::msg
union SDL_SysWMmsg::@15 msg
callback
static Uint32 callback(Uint32 interval, void *param)
Definition: testtimer.c:34
SDL_GestureProcessEvent
void SDL_GestureProcessEvent(SDL_Event *event)
Definition: SDL_gesture.c:542
SDL_ENABLE
#define SDL_ENABLE
Definition: SDL_events.h:759
uint
#define uint
SDL_DoEventLogging
static int SDL_DoEventLogging
Definition: SDL_events.c:89
SDL_JOYDEVICEREMOVED
@ SDL_JOYDEVICEREMOVED
Definition: SDL_events.h:117
SDL_WINDOWEVENT_MOVED
@ SDL_WINDOWEVENT_MOVED
Definition: SDL_video.h:153
_SDL_EventEntry::next
struct _SDL_EventEntry * next
Definition: SDL_events.c:65
SDL_GetHint
#define SDL_GetHint
Definition: SDL_dynapi_overrides.h:191
SDL_DisabledEventBlock::bits
Uint32 bits[8]
Definition: SDL_events.c:53
SDL_AUDIODEVICEADDED
@ SDL_AUDIODEVICEADDED
Definition: SDL_events.h:147
SDL_KEYDOWN
@ SDL_KEYDOWN
Definition: SDL_events.h:96
SDL_APP_LOWMEMORY
@ SDL_APP_LOWMEMORY
Definition: SDL_events.h:67
_SDL_SysWMEntry::msg
SDL_SysWMmsg msg
Definition: SDL_events.c:70
SDL_EventWatcher
Definition: SDL_events.c:39
SDL_CONTROLLERDEVICEADDED
@ SDL_CONTROLLERDEVICEADDED
Definition: SDL_events.h:123
_SDL_EventEntry::event
SDL_Event event
Definition: SDL_events.c:62
SDL_QuitQuit
void SDL_QuitQuit(void)
Definition: SDL_quit.c:165
SDL_FIRSTEVENT
@ SDL_FIRSTEVENT
Definition: SDL_events.h:57
SDL_APP_WILLENTERFOREGROUND
@ SDL_APP_WILLENTERFOREGROUND
Definition: SDL_events.h:79
SDL_CONTROLLERAXISMOTION
@ SDL_CONTROLLERAXISMOTION
Definition: SDL_events.h:120
SDL_SysWMEvent::msg
SDL_SysWMmsg * msg
Definition: SDL_events.h:551
SDL_RENDER_TARGETS_RESET
@ SDL_RENDER_TARGETS_RESET
Definition: SDL_events.h:154
filter
GLint GLint GLint GLint GLint GLint GLint GLbitfield GLenum filter
Definition: SDL_opengl_glext.h:1184
SDL_event_watchers_lock
static SDL_mutex * SDL_event_watchers_lock
Definition: SDL_events.c:45
PRINT_DROP_EVENT
#define PRINT_DROP_EVENT(event)
SDL_WINDOWEVENT_SHOWN
@ SDL_WINDOWEVENT_SHOWN
Definition: SDL_video.h:149
SDL_FINGERUP
@ SDL_FINGERUP
Definition: SDL_events.h:129
SDL_HasEvents
SDL_bool SDL_HasEvents(Uint32 minType, Uint32 maxType)
Definition: SDL_events.c:620
SDL_QUERY
#define SDL_QUERY
Definition: SDL_events.h:756
SDL_PushEvent
int SDL_PushEvent(SDL_Event *event)
Add an event to the event queue.
Definition: SDL_events.c:741
PRINT_JBUTTON_EVENT
#define PRINT_JBUTTON_EVENT(event)
SDL_event_watchers_removed
static SDL_bool SDL_event_watchers_removed
Definition: SDL_events.c:50
event
struct _cl_event * event
Definition: SDL_opengl_glext.h:2649
SDL_FALSE
@ SDL_FALSE
Definition: SDL_stdinc.h:163
SDL_MOUSEMOTION
@ SDL_MOUSEMOTION
Definition: SDL_events.h:105
SDL_FINGERDOWN
@ SDL_FINGERDOWN
Definition: SDL_events.h:128
SDL_thread.h
_this
static SDL_VideoDevice * _this
Definition: SDL_video.c:118
SDL_WaitEvent
int SDL_WaitEvent(SDL_Event *event)
Waits indefinitely for the next available event.
Definition: SDL_events.c:704
SDL_CONTROLLERBUTTONUP
@ SDL_CONTROLLERBUTTONUP
Definition: SDL_events.h:122
SDL_GetEventState
#define SDL_GetEventState(type)
Definition: SDL_events.h:772
SDL_Log
#define SDL_Log
Definition: SDL_dynapi_overrides.h:31
PRINT_AUDIODEV_EVENT
#define PRINT_AUDIODEV_EVENT(event)
SDL_PollEvent
int SDL_PollEvent(SDL_Event *event)
Polls for currently pending events.
Definition: SDL_events.c:698
SDL_eventaction
SDL_eventaction
Definition: SDL_events.h:613
SDL_TEXTINPUT
@ SDL_TEXTINPUT
Definition: SDL_events.h:99
SDL_DROPCOMPLETE
@ SDL_DROPCOMPLETE
Definition: SDL_events.h:144
SDL_event_watchers_dispatching
static SDL_bool SDL_event_watchers_dispatching
Definition: SDL_events.c:49
SDL_free
#define SDL_free
Definition: SDL_dynapi_overrides.h:377
SDL_SENSORUPDATE
@ SDL_SENSORUPDATE
Definition: SDL_events.h:151
SDL_RegisterEvents
Uint32 SDL_RegisterEvents(int numevents)
Definition: SDL_events.c:951
active
SDL_atomic_t active
Definition: SDL_events.c:77
SDL_DROPTEXT
@ SDL_DROPTEXT
Definition: SDL_events.h:142
SDL_max
#define SDL_max(x, y)
Definition: SDL_stdinc.h:407
SDL_QUIT
@ SDL_QUIT
Definition: SDL_events.h:60
_SDL_EventEntry::prev
struct _SDL_EventEntry * prev
Definition: SDL_events.c:64
name
GLuint const GLchar * name
Definition: SDL_opengl_glext.h:660
SDL_SendPendingSignalEvents
void SDL_SendPendingSignalEvents(void)
Definition: SDL_quit.c:175
SDL_WINDOWEVENT_EXPOSED
@ SDL_WINDOWEVENT_EXPOSED
Definition: SDL_video.h:151
SDL_MOUSEWHEEL
@ SDL_MOUSEWHEEL
Definition: SDL_events.h:108
head
SDL_EventEntry * head
Definition: SDL_events.c:80
SDL_GetTicks
Uint32 SDL_GetTicks(void)
Get the number of milliseconds since the SDL library initialization.
SDL_min
#define SDL_min(x, y)
Definition: SDL_stdinc.h:406
SDL_FINGERMOTION
@ SDL_FINGERMOTION
Definition: SDL_events.h:130
SDL_memmove
#define SDL_memmove
Definition: SDL_dynapi_overrides.h:388
SDL_WINDOWEVENT_HIT_TEST
@ SDL_WINDOWEVENT_HIT_TEST
Definition: SDL_video.h:169
SDL_JOYAXISMOTION
@ SDL_JOYAXISMOTION
Definition: SDL_events.h:111
SDL_QuitInit
int SDL_QuitInit(void)
Definition: SDL_quit.c:154
SDL_APP_WILLENTERBACKGROUND
@ SDL_APP_WILLENTERBACKGROUND
Definition: SDL_events.h:71
SDL_WINDOWEVENT_SIZE_CHANGED
@ SDL_WINDOWEVENT_SIZE_CHANGED
Definition: SDL_video.h:156
SDL_Delay
#define SDL_Delay
Definition: SDL_dynapi_overrides.h:486
SDL_EventQ
static struct @23 SDL_EventQ
PRINT_KEY_EVENT
#define PRINT_KEY_EVENT(event)
SDL_assert
#define SDL_assert(condition)
Definition: SDL_assert.h:169
SDL_DISABLE
#define SDL_DISABLE
Definition: SDL_events.h:758
PRINT_CBUTTON_EVENT
#define PRINT_CBUTTON_EVENT(event)
SDL_WINDOWEVENT_MINIMIZED
@ SDL_WINDOWEVENT_MINIMIZED
Definition: SDL_video.h:159
SDL_WINDOWEVENT_TAKE_FOCUS
@ SDL_WINDOWEVENT_TAKE_FOCUS
Definition: SDL_video.h:168
SDL_EVENT_CASE
#define SDL_EVENT_CASE(x)
SDL_SetEventFilter
void SDL_SetEventFilter(SDL_EventFilter filter, void *userdata)
Definition: SDL_events.c:795
SDL_VideoDevice
Definition: SDL_sysvideo.h:148
PRINT_FINGER_EVENT
#define PRINT_FINGER_EVENT(event)
SDL_JoystickUpdate
#define SDL_JoystickUpdate
Definition: SDL_dynapi_overrides.h:209
SDL_DROPBEGIN
@ SDL_DROPBEGIN
Definition: SDL_events.h:143
SDL_KEYMAPCHANGED
@ SDL_KEYMAPCHANGED
Definition: SDL_events.h:100
SDL_arraysize
#define SDL_arraysize(array)
Definition: SDL_stdinc.h:115
SDL_calloc
#define SDL_calloc
Definition: SDL_dynapi_overrides.h:375
SDL_atoi
#define SDL_atoi
Definition: SDL_dynapi_overrides.h:410
SDL_AddEventWatch
void SDL_AddEventWatch(SDL_EventFilter filter, void *userdata)
Definition: SDL_events.c:834
SDL_FlushEvent
void SDL_FlushEvent(Uint32 type)
Definition: SDL_events.c:626
SDL_userevents
static Uint32 SDL_userevents
Definition: SDL_events.c:57
events
static SDL_Event events[EVENT_BUF_SIZE]
Definition: testgesture.c:39
SDL_TRUE
@ SDL_TRUE
Definition: SDL_stdinc.h:164
SDL_AddHintCallback
#define SDL_AddHintCallback
Definition: SDL_dynapi_overrides.h:192
SDL_EventState
Uint8 SDL_EventState(Uint32 type, int state)
Definition: SDL_events.c:902
SDL_AtomicAdd
#define SDL_AtomicAdd
Definition: SDL_dynapi_overrides.h:69
wmmsg_used
SDL_SysWMEntry * wmmsg_used
Definition: SDL_events.c:83
SDL_WINDOWEVENT_NONE
@ SDL_WINDOWEVENT_NONE
Definition: SDL_video.h:148
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:30
SDL_EventOK
static SDL_EventWatcher SDL_EventOK
Definition: SDL_events.c:46
SDL_snprintf
#define SDL_snprintf
Definition: SDL_dynapi_overrides.h:40
_SDL_EventEntry::msg
SDL_SysWMmsg msg
Definition: SDL_events.c:63
SDL_HINT_EVENT_LOGGING
#define SDL_HINT_EVENT_LOGGING
A variable controlling whether SDL logs all events pushed onto its internal queue.
Definition: SDL_hints.h:1109
SDL_JOYBUTTONUP
@ SDL_JOYBUTTONUP
Definition: SDL_events.h:115
SDL_disabled_events
static SDL_DisabledEventBlock * SDL_disabled_events[256]
Definition: SDL_events.c:56
SDL_StopEventLoop
void SDL_StopEventLoop(void)
Definition: SDL_events.c:340
SDL_MULTIGESTURE
@ SDL_MULTIGESTURE
Definition: SDL_events.h:135
SDL_event_watchers
static SDL_EventWatcher * SDL_event_watchers
Definition: SDL_events.c:47
SDL_JoystickEventState
#define SDL_JoystickEventState
Definition: SDL_dynapi_overrides.h:210
SDL_RENDER_DEVICE_RESET
@ SDL_RENDER_DEVICE_RESET
Definition: SDL_events.h:155
SDL_atomic_t
A type representing an atomic integer value. It is a struct so people don't accidentally use numeric ...
Definition: SDL_atomic.h:216
SDL_DestroyMutex
#define SDL_DestroyMutex
Definition: SDL_dynapi_overrides.h:263
count
SDL_atomic_t count
Definition: SDL_events.c:78
SDL_GETEVENT
@ SDL_GETEVENT
Definition: SDL_events.h:617
SDL_SendKeymapChangedEvent
int SDL_SendKeymapChangedEvent(void)
Definition: SDL_events.c:996
SDL_LogEvent
static void SDL_LogEvent(const SDL_Event *event)
Definition: SDL_events.c:98
SDL_events_c.h
SDL_MOUSEBUTTONDOWN
@ SDL_MOUSEBUTTONDOWN
Definition: SDL_events.h:106
SDL_JOYDEVICEADDED
@ SDL_JOYDEVICEADDED
Definition: SDL_events.h:116
SDL_SYSWMEVENT
@ SDL_SYSWMEVENT
Definition: SDL_events.h:93
SDL_WaitEventTimeout
int SDL_WaitEventTimeout(SDL_Event *event, int timeout)
Waits until the specified timeout (in milliseconds) for the next available event.
Definition: SDL_events.c:710
_SDL_SysWMEntry
Definition: SDL_events.c:68
SDL_EventType
SDL_EventType
The types of events that can be delivered.
Definition: SDL_events.h:55
SDL_PumpEvents
void SDL_PumpEvents(void)
Definition: SDL_events.c:670
SDL_TICKS_PASSED
#define SDL_TICKS_PASSED(A, B)
Compare SDL ticks values, and return true if A has passed B.
Definition: SDL_timer.h:56
_SDL_EventEntry
Definition: SDL_events.c:60
PRINT_CONTROLLERDEV_EVENT
#define PRINT_CONTROLLERDEV_EVENT(event)
SDL_HasEvent
SDL_bool SDL_HasEvent(Uint32 type)
Definition: SDL_events.c:614
SDL_MOUSEWHEEL_NORMAL
@ SDL_MOUSEWHEEL_NORMAL
Definition: SDL_mouse.h:68
bits
GLenum GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const void * bits
Definition: SDL_opengl_glext.h:6176
SDL_WINDOWEVENT_HIDDEN
@ SDL_WINDOWEVENT_HIDDEN
Definition: SDL_video.h:150
SDL_Event::syswm
SDL_SysWMEvent syswm
Definition: SDL_events.h:581
SDL_Event
General event structure.
Definition: SDL_events.h:557
SDL_WINDOWEVENT
@ SDL_WINDOWEVENT
Definition: SDL_events.h:92
SDL_GetVideoDevice
SDL_VideoDevice * SDL_GetVideoDevice(void)
Definition: SDL_video.c:583
SDL_EventLoggingChanged
static void SDL_EventLoggingChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
Definition: SDL_events.c:92
SDL_DelHintCallback
#define SDL_DelHintCallback
Definition: SDL_dynapi_overrides.h:193
SDL_WINDOWEVENT_RESTORED
@ SDL_WINDOWEVENT_RESTORED
Definition: SDL_video.h:161
SDL_AtomicSet
#define SDL_AtomicSet
Definition: SDL_dynapi_overrides.h:67
SDL_malloc
#define SDL_malloc
Definition: SDL_dynapi_overrides.h:374
SDL_JOYBUTTONDOWN
@ SDL_JOYBUTTONDOWN
Definition: SDL_events.h:114
SDL_AtomicGet
#define SDL_AtomicGet
Definition: SDL_dynapi_overrides.h:68
SDL_EventsInit
int SDL_EventsInit(void)
Definition: SDL_events.c:1002
SDL_PRIs64
#define SDL_PRIs64
Definition: SDL_stdinc.h:227
SDL_DisabledEventBlock
Definition: SDL_events.c:52
SDL_AUDIODEVICEREMOVED
@ SDL_AUDIODEVICEREMOVED
Definition: SDL_events.h:148
SDL_EventsQuit
void SDL_EventsQuit(void)
Definition: SDL_events.c:1016
SDL_LASTEVENT
@ SDL_LASTEVENT
Definition: SDL_events.h:165
SDL_UnlockMutex
#define SDL_UnlockMutex
Definition: SDL_dynapi_overrides.h:262
SDL_CONTROLLERDEVICEREMAPPED
@ SDL_CONTROLLERDEVICEREMAPPED
Definition: SDL_events.h:125
SDL_WINDOWEVENT_FOCUS_GAINED
@ SDL_WINDOWEVENT_FOCUS_GAINED
Definition: SDL_video.h:165
SDL_VideoDevice::PumpEvents
void(* PumpEvents)(_THIS)
Definition: SDL_sysvideo.h:281
SDL_SendAppEvent
int SDL_SendAppEvent(SDL_EventType eventType)
Definition: SDL_events.c:965
SDL_PeepEvents
int SDL_PeepEvents(SDL_Event *events, int numevents, SDL_eventaction action, Uint32 minType, Uint32 maxType)
Definition: SDL_events.c:536
SDL_FlushEvents
void SDL_FlushEvents(Uint32 minType, Uint32 maxType)
Definition: SDL_events.c:632
SDL_DelEventWatch
void SDL_DelEventWatch(SDL_EventFilter filter, void *userdata)
Definition: SDL_events.c:858
free
SDL_EventEntry * free
Definition: SDL_events.c:82
type
GLuint GLuint GLsizei GLenum type
Definition: SDL_opengl.h:1571
state
struct xkb_state * state
Definition: SDL_waylandsym.h:113
i
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:50
SDL_JOYHATMOTION
@ SDL_JOYHATMOTION
Definition: SDL_events.h:113
SDL_DOLLARGESTURE
@ SDL_DOLLARGESTURE
Definition: SDL_events.h:133
SDL_DROPFILE
@ SDL_DROPFILE
Definition: SDL_events.h:141
SDL_MAX_QUEUED_EVENTS
#define SDL_MAX_QUEUED_EVENTS
Definition: SDL_events.c:37
SDL_WINDOWEVENT_CASE
#define SDL_WINDOWEVENT_CASE(x)
SDL_StartEventLoop
int SDL_StartEventLoop(void)
Definition: SDL_events.c:414
SDL_WINDOWEVENT_MAXIMIZED
@ SDL_WINDOWEVENT_MAXIMIZED
Definition: SDL_video.h:160
SDL_JOYBALLMOTION
@ SDL_JOYBALLMOTION
Definition: SDL_events.h:112
SDL_CLIPBOARDUPDATE
@ SDL_CLIPBOARDUPDATE
Definition: SDL_events.h:138
SDL_PEEKEVENT
@ SDL_PEEKEVENT
Definition: SDL_events.h:616
SDL_WINDOWEVENT_LEAVE
@ SDL_WINDOWEVENT_LEAVE
Definition: SDL_video.h:164
SDL_bool
SDL_bool
Definition: SDL_stdinc.h:161
SDL_USEREVENT
@ SDL_USEREVENT
Definition: SDL_events.h:160
SDL_syswm.h
lock
SDL_mutex * lock
Definition: SDL_events.c:76
Uint8
uint8_t Uint8
Definition: SDL_stdinc.h:179