src/events/SDL_events.c
author Ryan C. Gordon <icculus@icculus.org>
Thu, 09 Apr 2015 22:33:39 -0400
branchiOS-improvements
changeset 9542 618662dc9e82
parent 9437 569cfb86df95
child 9619 b94b6d0bff0f
permissions -rw-r--r--
Closing the iOS-improvements branch.
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
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  This software is provided 'as-is', without any express or implied
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  warranty.  In no event will the authors be held liable for any damages
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  arising from the use of this software.
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  Permission is granted to anyone to use this software for any purpose,
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  including commercial applications, and to alter it and redistribute it
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  freely, subject to the following restrictions:
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  1. The origin of this software must not be misrepresented; you must not
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     claim that you wrote the original software. If you use this software
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     in a product, an acknowledgment in the product documentation would be
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     appreciated but is not required.
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  2. Altered source versions must be plainly marked as such, and must not be
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     misrepresented as being the original software.
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  3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../SDL_internal.h"
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/* General event handling code for SDL */
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#include "SDL.h"
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#include "SDL_events.h"
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#include "SDL_syswm.h"
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#include "SDL_thread.h"
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#include "SDL_events_c.h"
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#include "../timer/SDL_timer_c.h"
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#if !SDL_JOYSTICK_DISABLED
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#include "../joystick/SDL_joystick_c.h"
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#endif
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#include "../video/SDL_sysvideo.h"
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/* An arbitrary limit so we don't have unbounded growth */
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#define SDL_MAX_QUEUED_EVENTS   65535
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/* Public data -- the event filter */
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SDL_EventFilter SDL_EventOK = NULL;
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void *SDL_EventOKParam;
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typedef struct SDL_EventWatcher {
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    SDL_EventFilter callback;
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    void *userdata;
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    struct SDL_EventWatcher *next;
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} SDL_EventWatcher;
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static SDL_EventWatcher *SDL_event_watchers = NULL;
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typedef struct {
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    Uint32 bits[8];
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} SDL_DisabledEventBlock;
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static SDL_DisabledEventBlock *SDL_disabled_events[256];
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static Uint32 SDL_userevents = SDL_USEREVENT;
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/* Private data -- event queue */
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typedef struct _SDL_EventEntry
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{
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    SDL_Event event;
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    SDL_SysWMmsg msg;
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    struct _SDL_EventEntry *prev;
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    struct _SDL_EventEntry *next;
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} SDL_EventEntry;
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typedef struct _SDL_SysWMEntry
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{
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    SDL_SysWMmsg msg;
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    struct _SDL_SysWMEntry *next;
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} SDL_SysWMEntry;
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static struct
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{
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    SDL_mutex *lock;
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    volatile SDL_bool active;
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    volatile int count;
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    volatile int max_events_seen;
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    SDL_EventEntry *head;
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    SDL_EventEntry *tail;
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    SDL_EventEntry *free;
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    SDL_SysWMEntry *wmmsg_used;
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    SDL_SysWMEntry *wmmsg_free;
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} SDL_EventQ = { NULL, SDL_TRUE, 0, 0, NULL, NULL, NULL, NULL, NULL };
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/* Public functions */
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void
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SDL_StopEventLoop(void)
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{
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    const char *report = SDL_GetHint("SDL_EVENT_QUEUE_STATISTICS");
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    int i;
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    SDL_EventEntry *entry;
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    SDL_SysWMEntry *wmmsg;
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    if (SDL_EventQ.lock) {
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        SDL_LockMutex(SDL_EventQ.lock);
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    }
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    SDL_EventQ.active = SDL_FALSE;
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    if (report && SDL_atoi(report)) {
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        SDL_Log("SDL EVENT QUEUE: Maximum events in-flight: %d\n",
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                SDL_EventQ.max_events_seen);
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    }
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    /* Clean out EventQ */
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    for (entry = SDL_EventQ.head; entry; ) {
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        SDL_EventEntry *next = entry->next;
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        SDL_free(entry);
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        entry = next;
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    }
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    for (entry = SDL_EventQ.free; entry; ) {
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        SDL_EventEntry *next = entry->next;
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        SDL_free(entry);
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        entry = next;
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    }
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    for (wmmsg = SDL_EventQ.wmmsg_used; wmmsg; ) {
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        SDL_SysWMEntry *next = wmmsg->next;
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        SDL_free(wmmsg);
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        wmmsg = next;
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    }
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    for (wmmsg = SDL_EventQ.wmmsg_free; wmmsg; ) {
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        SDL_SysWMEntry *next = wmmsg->next;
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        SDL_free(wmmsg);
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        wmmsg = next;
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    }
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    SDL_EventQ.count = 0;
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    SDL_EventQ.max_events_seen = 0;
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    SDL_EventQ.head = NULL;
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    SDL_EventQ.tail = NULL;
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    SDL_EventQ.free = NULL;
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    SDL_EventQ.wmmsg_used = NULL;
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    SDL_EventQ.wmmsg_free = NULL;
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    /* Clear disabled event state */
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    for (i = 0; i < SDL_arraysize(SDL_disabled_events); ++i) {
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        SDL_free(SDL_disabled_events[i]);
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        SDL_disabled_events[i] = NULL;
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    }
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    while (SDL_event_watchers) {
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        SDL_EventWatcher *tmp = SDL_event_watchers;
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        SDL_event_watchers = tmp->next;
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        SDL_free(tmp);
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    }
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    SDL_EventOK = NULL;
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    if (SDL_EventQ.lock) {
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        SDL_UnlockMutex(SDL_EventQ.lock);
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        SDL_DestroyMutex(SDL_EventQ.lock);
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        SDL_EventQ.lock = NULL;
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    }
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}
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/* This function (and associated calls) may be called more than once */
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int
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SDL_StartEventLoop(void)
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{
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    /* We'll leave the event queue alone, since we might have gotten
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       some important events at launch (like SDL_DROPFILE)
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       FIXME: Does this introduce any other bugs with events at startup?
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     */
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    /* Create the lock and set ourselves active */
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#if !SDL_THREADS_DISABLED
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    if (!SDL_EventQ.lock) {
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        SDL_EventQ.lock = SDL_CreateMutex();
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    }
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    if (SDL_EventQ.lock == NULL) {
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        return (-1);
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    }
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#endif /* !SDL_THREADS_DISABLED */
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    /* Process most event types */
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    SDL_EventState(SDL_TEXTINPUT, SDL_DISABLE);
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    SDL_EventState(SDL_TEXTEDITING, SDL_DISABLE);
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    SDL_EventState(SDL_SYSWMEVENT, SDL_DISABLE);
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    SDL_EventQ.active = SDL_TRUE;
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    return (0);
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}
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/* Add an event to the event queue -- called with the queue locked */
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static int
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SDL_AddEvent(SDL_Event * event)
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{
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    SDL_EventEntry *entry;
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    if (SDL_EventQ.count >= SDL_MAX_QUEUED_EVENTS) {
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        SDL_SetError("Event queue is full (%d events)", SDL_EventQ.count);
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        return 0;
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    }
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    if (SDL_EventQ.free == NULL) {
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        entry = (SDL_EventEntry *)SDL_malloc(sizeof(*entry));
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        if (!entry) {
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            return 0;
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        }
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    } else {
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        entry = SDL_EventQ.free;
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        SDL_EventQ.free = entry->next;
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    }
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    entry->event = *event;
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    if (event->type == SDL_SYSWMEVENT) {
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        entry->msg = *event->syswm.msg;
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        entry->event.syswm.msg = &entry->msg;
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    }
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    if (SDL_EventQ.tail) {
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        SDL_EventQ.tail->next = entry;
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        entry->prev = SDL_EventQ.tail;
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        SDL_EventQ.tail = entry;
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        entry->next = NULL;
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    } else {
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        SDL_assert(!SDL_EventQ.head);
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        SDL_EventQ.head = entry;
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        SDL_EventQ.tail = entry;
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        entry->prev = NULL;
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        entry->next = NULL;
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    }
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    ++SDL_EventQ.count;
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    if (SDL_EventQ.count > SDL_EventQ.max_events_seen) {
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        SDL_EventQ.max_events_seen = SDL_EventQ.count;
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    }
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    return 1;
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}
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/* Remove an event from the queue -- called with the queue locked */
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static void
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SDL_CutEvent(SDL_EventEntry *entry)
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{
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    if (entry->prev) {
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        entry->prev->next = entry->next;
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    }
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    if (entry->next) {
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        entry->next->prev = entry->prev;
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    }
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    if (entry == SDL_EventQ.head) {
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        SDL_assert(entry->prev == NULL);
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        SDL_EventQ.head = entry->next;
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    }
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    if (entry == SDL_EventQ.tail) {
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        SDL_assert(entry->next == NULL);
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        SDL_EventQ.tail = entry->prev;
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    }
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    entry->next = SDL_EventQ.free;
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    SDL_EventQ.free = entry;
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    SDL_assert(SDL_EventQ.count > 0);
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    --SDL_EventQ.count;
0
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}
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/* Lock the event queue, take a peep at it, and unlock it */
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int
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SDL_PeepEvents(SDL_Event * events, int numevents, SDL_eventaction action,
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               Uint32 minType, Uint32 maxType)
0
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{
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    int i, used;
0
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    /* Don't look after we've quit */
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    if (!SDL_EventQ.active) {
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        /* We get a few spurious events at shutdown, so don't warn then */
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        if (action != SDL_ADDEVENT) {
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            SDL_SetError("The event system has been shut down");
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        }
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        return (-1);
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    }
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    /* Lock the event queue */
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    used = 0;
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    if (!SDL_EventQ.lock || SDL_LockMutex(SDL_EventQ.lock) == 0) {
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        if (action == SDL_ADDEVENT) {
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            for (i = 0; i < numevents; ++i) {
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                used += SDL_AddEvent(&events[i]);
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            }
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        } else {
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            SDL_EventEntry *entry, *next;
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            SDL_SysWMEntry *wmmsg, *wmmsg_next;
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            SDL_Event tmpevent;
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            Uint32 type;
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            /* If 'events' is NULL, just see if they exist */
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            if (events == NULL) {
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                action = SDL_PEEKEVENT;
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                numevents = 1;
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                events = &tmpevent;
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            }
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            /* Clean out any used wmmsg data
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               FIXME: Do we want to retain the data for some period of time?
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             */
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            for (wmmsg = SDL_EventQ.wmmsg_used; wmmsg; wmmsg = wmmsg_next) {
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                wmmsg_next = wmmsg->next;
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                wmmsg->next = SDL_EventQ.wmmsg_free;
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                SDL_EventQ.wmmsg_free = wmmsg;
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            }
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            SDL_EventQ.wmmsg_used = NULL;
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            for (entry = SDL_EventQ.head; entry && used < numevents; entry = next) {
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                next = entry->next;
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                type = entry->event.type;
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                if (minType <= type && type <= maxType) {
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                    events[used] = entry->event;
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                    if (entry->event.type == SDL_SYSWMEVENT) {
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                        /* We need to copy the wmmsg somewhere safe.
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                           For now we'll guarantee it's valid at least until
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                           the next call to SDL_PeepEvents()
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                         */
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                        if (SDL_EventQ.wmmsg_free) {
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                            wmmsg = SDL_EventQ.wmmsg_free;
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                            SDL_EventQ.wmmsg_free = wmmsg->next;
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                        } else {
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                            wmmsg = (SDL_SysWMEntry *)SDL_malloc(sizeof(*wmmsg));
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                        }
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                        wmmsg->msg = *entry->event.syswm.msg;
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                        wmmsg->next = SDL_EventQ.wmmsg_used;
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                        SDL_EventQ.wmmsg_used = wmmsg;
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                        events[used].syswm.msg = &wmmsg->msg;
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                    }
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   329
                    ++used;
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   330
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                    if (action == SDL_GETEVENT) {
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                        SDL_CutEvent(entry);
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                    }
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                }
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            }
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        }
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        SDL_UnlockMutex(SDL_EventQ.lock);
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    } else {
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        return SDL_SetError("Couldn't lock event queue");
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    }
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    return (used);
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}
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SDL_bool
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SDL_HasEvent(Uint32 type)
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{
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    return (SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, type, type) > 0);
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}
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SDL_bool
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SDL_HasEvents(Uint32 minType, Uint32 maxType)
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{
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    return (SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, minType, maxType) > 0);
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   354
}
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void
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SDL_FlushEvent(Uint32 type)
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{
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    SDL_FlushEvents(type, type);
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}
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   362
void
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SDL_FlushEvents(Uint32 minType, Uint32 maxType)
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   364
{
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   365
    /* Don't look after we've quit */
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   366
    if (!SDL_EventQ.active) {
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        return;
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   368
    }
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   369
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    /* Make sure the events are current */
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   371
#if 0
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   372
    /* Actually, we can't do this since we might be flushing while processing
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       a resize event, and calling this might trigger further resize events.
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   374
    */
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    SDL_PumpEvents();
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   376
#endif
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   378
    /* Lock the event queue */
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   379
    if (SDL_LockMutex(SDL_EventQ.lock) == 0) {
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   380
        SDL_EventEntry *entry, *next;
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parents: 7201
diff changeset
   381
        Uint32 type;
9598cbf46957 Made the SDL event queue dynamically allocated so we don't ever drop events.
Sam Lantinga <slouken@libsdl.org>
parents: 7201
diff changeset
   382
        for (entry = SDL_EventQ.head; entry; entry = next) {
9598cbf46957 Made the SDL event queue dynamically allocated so we don't ever drop events.
Sam Lantinga <slouken@libsdl.org>
parents: 7201
diff changeset
   383
            next = entry->next;
9598cbf46957 Made the SDL event queue dynamically allocated so we don't ever drop events.
Sam Lantinga <slouken@libsdl.org>
parents: 7201
diff changeset
   384
            type = entry->event.type;
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   385
            if (minType <= type && type <= maxType) {
7304
9598cbf46957 Made the SDL event queue dynamically allocated so we don't ever drop events.
Sam Lantinga <slouken@libsdl.org>
parents: 7201
diff changeset
   386
                SDL_CutEvent(entry);
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   387
            }
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   388
        }
6977
b73d51026c68 Changed the name of SDL_mutexP() SDL_mutexV()
Sam Lantinga <slouken@libsdl.org>
parents: 6949
diff changeset
   389
        SDL_UnlockMutex(SDL_EventQ.lock);
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   390
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   391
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   392
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   393
/* Run the system dependent event loops */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   394
void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   395
SDL_PumpEvents(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   396
{
5123
dc0dfdd58f27 Removed completely non-portable event thread hack.
Sam Lantinga <slouken@libsdl.org>
parents: 5111
diff changeset
   397
    SDL_VideoDevice *_this = SDL_GetVideoDevice();
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   398
5123
dc0dfdd58f27 Removed completely non-portable event thread hack.
Sam Lantinga <slouken@libsdl.org>
parents: 5111
diff changeset
   399
    /* Get events from the video subsystem */
dc0dfdd58f27 Removed completely non-portable event thread hack.
Sam Lantinga <slouken@libsdl.org>
parents: 5111
diff changeset
   400
    if (_this) {
dc0dfdd58f27 Removed completely non-portable event thread hack.
Sam Lantinga <slouken@libsdl.org>
parents: 5111
diff changeset
   401
        _this->PumpEvents(_this);
dc0dfdd58f27 Removed completely non-portable event thread hack.
Sam Lantinga <slouken@libsdl.org>
parents: 5111
diff changeset
   402
    }
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   403
#if !SDL_JOYSTICK_DISABLED
5123
dc0dfdd58f27 Removed completely non-portable event thread hack.
Sam Lantinga <slouken@libsdl.org>
parents: 5111
diff changeset
   404
    /* Check for joystick state change */
8860
c4133d635375 Removed SDL_SYS_JoystickNeedsPolling().
Ryan C. Gordon <icculus@icculus.org>
parents: 8791
diff changeset
   405
    if ((!SDL_disabled_events[SDL_JOYAXISMOTION >> 8] || SDL_JoystickEventState(SDL_QUERY))) {
5123
dc0dfdd58f27 Removed completely non-portable event thread hack.
Sam Lantinga <slouken@libsdl.org>
parents: 5111
diff changeset
   406
        SDL_JoystickUpdate();
dc0dfdd58f27 Removed completely non-portable event thread hack.
Sam Lantinga <slouken@libsdl.org>
parents: 5111
diff changeset
   407
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   408
#endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   409
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   410
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   411
/* Public functions */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   412
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   413
int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   414
SDL_PollEvent(SDL_Event * event)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   415
{
3072
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   416
    return SDL_WaitEventTimeout(event, 0);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   417
}
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   418
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   419
int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   420
SDL_WaitEvent(SDL_Event * event)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   421
{
3072
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   422
    return SDL_WaitEventTimeout(event, -1);
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   423
}
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   424
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   425
int
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   426
SDL_WaitEventTimeout(SDL_Event * event, int timeout)
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   427
{
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   428
    Uint32 expiration = 0;
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   429
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   430
    if (timeout > 0)
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   431
        expiration = SDL_GetTicks() + timeout;
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   432
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   433
    for (;;) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   434
        SDL_PumpEvents();
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   435
        switch (SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT)) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   436
        case -1:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   437
            return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   438
        case 1:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   439
            return 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   440
        case 0:
3072
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   441
            if (timeout == 0) {
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   442
                /* Polling and no events, just return */
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   443
                return 0;
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   444
            }
7857
6388f5229bb7 Added a macro SDL_TICKS_PASSED() to correctly compare two 32-bit tick values.
Sam Lantinga <slouken@libsdl.org>
parents: 7719
diff changeset
   445
            if (timeout > 0 && SDL_TICKS_PASSED(SDL_GetTicks(), expiration)) {
3072
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   446
                /* Timeout expired and no events */
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   447
                return 0;
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   448
            }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   449
            SDL_Delay(10);
3072
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
   450
            break;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   451
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   452
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   453
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   454
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   455
int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   456
SDL_PushEvent(SDL_Event * event)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   457
{
5146
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   458
    SDL_EventWatcher *curr;
7190
11612d544fcd Added mobile application events, with implementations for iOS and Android
Sam Lantinga <slouken@libsdl.org>
parents: 7082
diff changeset
   459
7082
e9d6004d2978 future-proofing for Microsoft's C++/CX extensions, whereby "generic" is a reserved keyword
David Ludwig <dludwig@pobox.com>
parents: 7077
diff changeset
   460
    event->common.timestamp = SDL_GetTicks();
7190
11612d544fcd Added mobile application events, with implementations for iOS and Android
Sam Lantinga <slouken@libsdl.org>
parents: 7082
diff changeset
   461
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   462
    if (SDL_EventOK && !SDL_EventOK(SDL_EventOKParam, event)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   463
        return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   464
    }
5146
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   465
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   466
    for (curr = SDL_event_watchers; curr; curr = curr->next) {
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   467
        curr->callback(curr->userdata, event);
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   468
    }
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   469
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   470
    if (SDL_PeepEvents(event, 1, SDL_ADDEVENT, 0, 0) <= 0) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   471
        return -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   472
    }
4657
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents: 4642
diff changeset
   473
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents: 4642
diff changeset
   474
    SDL_GestureProcessEvent(event);
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents: 4642
diff changeset
   475
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   476
    return 1;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   477
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   478
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   479
void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   480
SDL_SetEventFilter(SDL_EventFilter filter, void *userdata)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   481
{
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   482
    /* Set filter and discard pending events */
7201
c6b3d3c32507 Fixed bug 1113 - SDL_SetEventFilter()'s event deletion process is not safe against intervening event push.
Sam Lantinga <slouken@libsdl.org>
parents: 7191
diff changeset
   483
    SDL_EventOK = NULL;
c6b3d3c32507 Fixed bug 1113 - SDL_SetEventFilter()'s event deletion process is not safe against intervening event push.
Sam Lantinga <slouken@libsdl.org>
parents: 7191
diff changeset
   484
    SDL_FlushEvents(SDL_FIRSTEVENT, SDL_LASTEVENT);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   485
    SDL_EventOKParam = userdata;
7201
c6b3d3c32507 Fixed bug 1113 - SDL_SetEventFilter()'s event deletion process is not safe against intervening event push.
Sam Lantinga <slouken@libsdl.org>
parents: 7191
diff changeset
   486
    SDL_EventOK = filter;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   487
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   488
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   489
SDL_bool
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   490
SDL_GetEventFilter(SDL_EventFilter * filter, void **userdata)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   491
{
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   492
    if (filter) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   493
        *filter = SDL_EventOK;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   494
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   495
    if (userdata) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   496
        *userdata = SDL_EventOKParam;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   497
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   498
    return SDL_EventOK ? SDL_TRUE : SDL_FALSE;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   499
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   500
5146
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   501
/* FIXME: This is not thread-safe yet */
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   502
void
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   503
SDL_AddEventWatch(SDL_EventFilter filter, void *userdata)
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   504
{
8234
80c193c7c8c8 Fixed bug 2414 - Execute event watchers in the order they were added
Sam Lantinga <slouken@libsdl.org>
parents: 8149
diff changeset
   505
    SDL_EventWatcher *watcher, *tail;
5146
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   506
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   507
    watcher = (SDL_EventWatcher *)SDL_malloc(sizeof(*watcher));
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   508
    if (!watcher) {
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   509
        /* Uh oh... */
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   510
        return;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   511
    }
8234
80c193c7c8c8 Fixed bug 2414 - Execute event watchers in the order they were added
Sam Lantinga <slouken@libsdl.org>
parents: 8149
diff changeset
   512
80c193c7c8c8 Fixed bug 2414 - Execute event watchers in the order they were added
Sam Lantinga <slouken@libsdl.org>
parents: 8149
diff changeset
   513
    /* create the watcher */
5146
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   514
    watcher->callback = filter;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   515
    watcher->userdata = userdata;
8234
80c193c7c8c8 Fixed bug 2414 - Execute event watchers in the order they were added
Sam Lantinga <slouken@libsdl.org>
parents: 8149
diff changeset
   516
    watcher->next = NULL;
80c193c7c8c8 Fixed bug 2414 - Execute event watchers in the order they were added
Sam Lantinga <slouken@libsdl.org>
parents: 8149
diff changeset
   517
80c193c7c8c8 Fixed bug 2414 - Execute event watchers in the order they were added
Sam Lantinga <slouken@libsdl.org>
parents: 8149
diff changeset
   518
    /* add the watcher to the end of the list */
80c193c7c8c8 Fixed bug 2414 - Execute event watchers in the order they were added
Sam Lantinga <slouken@libsdl.org>
parents: 8149
diff changeset
   519
    if (SDL_event_watchers) {
80c193c7c8c8 Fixed bug 2414 - Execute event watchers in the order they were added
Sam Lantinga <slouken@libsdl.org>
parents: 8149
diff changeset
   520
        for (tail = SDL_event_watchers; tail->next; tail = tail->next) {
80c193c7c8c8 Fixed bug 2414 - Execute event watchers in the order they were added
Sam Lantinga <slouken@libsdl.org>
parents: 8149
diff changeset
   521
            continue;
80c193c7c8c8 Fixed bug 2414 - Execute event watchers in the order they were added
Sam Lantinga <slouken@libsdl.org>
parents: 8149
diff changeset
   522
        }
80c193c7c8c8 Fixed bug 2414 - Execute event watchers in the order they were added
Sam Lantinga <slouken@libsdl.org>
parents: 8149
diff changeset
   523
        tail->next = watcher;
80c193c7c8c8 Fixed bug 2414 - Execute event watchers in the order they were added
Sam Lantinga <slouken@libsdl.org>
parents: 8149
diff changeset
   524
    } else {
80c193c7c8c8 Fixed bug 2414 - Execute event watchers in the order they were added
Sam Lantinga <slouken@libsdl.org>
parents: 8149
diff changeset
   525
        SDL_event_watchers = watcher;
80c193c7c8c8 Fixed bug 2414 - Execute event watchers in the order they were added
Sam Lantinga <slouken@libsdl.org>
parents: 8149
diff changeset
   526
    }
5146
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   527
}
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   528
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   529
/* FIXME: This is not thread-safe yet */
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   530
void
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   531
SDL_DelEventWatch(SDL_EventFilter filter, void *userdata)
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   532
{
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   533
    SDL_EventWatcher *prev = NULL;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   534
    SDL_EventWatcher *curr;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   535
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   536
    for (curr = SDL_event_watchers; curr; prev = curr, curr = curr->next) {
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   537
        if (curr->callback == filter && curr->userdata == userdata) {
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   538
            if (prev) {
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   539
                prev->next = curr->next;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   540
            } else {
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   541
                SDL_event_watchers = curr->next;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   542
            }
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   543
            SDL_free(curr);
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   544
            break;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   545
        }
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   546
    }
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   547
}
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5123
diff changeset
   548
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   549
void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   550
SDL_FilterEvents(SDL_EventFilter filter, void *userdata)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   551
{
8791
44dc9af6b7c2 Fixed SDL error when filtering events after shutdown.
Sam Lantinga <slouken@libsdl.org>
parents: 8583
diff changeset
   552
    if (SDL_EventQ.lock && SDL_LockMutex(SDL_EventQ.lock) == 0) {
7304
9598cbf46957 Made the SDL event queue dynamically allocated so we don't ever drop events.
Sam Lantinga <slouken@libsdl.org>
parents: 7201
diff changeset
   553
        SDL_EventEntry *entry, *next;
9598cbf46957 Made the SDL event queue dynamically allocated so we don't ever drop events.
Sam Lantinga <slouken@libsdl.org>
parents: 7201
diff changeset
   554
        for (entry = SDL_EventQ.head; entry; entry = next) {
9598cbf46957 Made the SDL event queue dynamically allocated so we don't ever drop events.
Sam Lantinga <slouken@libsdl.org>
parents: 7201
diff changeset
   555
            next = entry->next;
9598cbf46957 Made the SDL event queue dynamically allocated so we don't ever drop events.
Sam Lantinga <slouken@libsdl.org>
parents: 7201
diff changeset
   556
            if (!filter(userdata, &entry->event)) {
9598cbf46957 Made the SDL event queue dynamically allocated so we don't ever drop events.
Sam Lantinga <slouken@libsdl.org>
parents: 7201
diff changeset
   557
                SDL_CutEvent(entry);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   558
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   559
        }
7304
9598cbf46957 Made the SDL event queue dynamically allocated so we don't ever drop events.
Sam Lantinga <slouken@libsdl.org>
parents: 7201
diff changeset
   560
        SDL_UnlockMutex(SDL_EventQ.lock);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   561
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   562
}
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   563
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   564
Uint8
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   565
SDL_EventState(Uint32 type, int state)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   566
{
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   567
    Uint8 current_state;
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   568
    Uint8 hi = ((type >> 8) & 0xff);
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   569
    Uint8 lo = (type & 0xff);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   570
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   571
    if (SDL_disabled_events[hi] &&
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   572
        (SDL_disabled_events[hi]->bits[lo/32] & (1 << (lo&31)))) {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   573
        current_state = SDL_DISABLE;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   574
    } else {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   575
        current_state = SDL_ENABLE;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   576
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   577
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   578
    if (state != current_state)
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   579
    {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   580
        switch (state) {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   581
        case SDL_DISABLE:
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   582
            /* Disable this event type and discard pending events */
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   583
            if (!SDL_disabled_events[hi]) {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   584
                SDL_disabled_events[hi] = (SDL_DisabledEventBlock*) SDL_calloc(1, sizeof(SDL_DisabledEventBlock));
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   585
                if (!SDL_disabled_events[hi]) {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   586
                    /* Out of memory, nothing we can do... */
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   587
                    break;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   588
                }
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   589
            }
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   590
            SDL_disabled_events[hi]->bits[lo/32] |= (1 << (lo&31));
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   591
            SDL_FlushEvent(type);
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   592
            break;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   593
        case SDL_ENABLE:
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   594
            SDL_disabled_events[hi]->bits[lo/32] &= ~(1 << (lo&31));
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   595
            break;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   596
        default:
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   597
            /* Querying state... */
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   598
            break;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   599
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   600
    }
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   601
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   602
    return current_state;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   603
}
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   604
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   605
Uint32
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   606
SDL_RegisterEvents(int numevents)
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   607
{
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   608
    Uint32 event_base;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   609
7611
ed6f4b8557e4 SDL_RegisterEvents() now rejects requests for numevents <= 0.
Ryan C. Gordon <icculus@icculus.org>
parents: 7306
diff changeset
   610
    if ((numevents > 0) && (SDL_userevents+numevents <= SDL_LASTEVENT)) {
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   611
        event_base = SDL_userevents;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   612
        SDL_userevents += numevents;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   613
    } else {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   614
        event_base = (Uint32)-1;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   615
    }
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   616
    return event_base;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   617
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   618
7190
11612d544fcd Added mobile application events, with implementations for iOS and Android
Sam Lantinga <slouken@libsdl.org>
parents: 7082
diff changeset
   619
int
11612d544fcd Added mobile application events, with implementations for iOS and Android
Sam Lantinga <slouken@libsdl.org>
parents: 7082
diff changeset
   620
SDL_SendAppEvent(SDL_EventType eventType)
11612d544fcd Added mobile application events, with implementations for iOS and Android
Sam Lantinga <slouken@libsdl.org>
parents: 7082
diff changeset
   621
{
11612d544fcd Added mobile application events, with implementations for iOS and Android
Sam Lantinga <slouken@libsdl.org>
parents: 7082
diff changeset
   622
    int posted;
11612d544fcd Added mobile application events, with implementations for iOS and Android
Sam Lantinga <slouken@libsdl.org>
parents: 7082
diff changeset
   623
11612d544fcd Added mobile application events, with implementations for iOS and Android
Sam Lantinga <slouken@libsdl.org>
parents: 7082
diff changeset
   624
    posted = 0;
11612d544fcd Added mobile application events, with implementations for iOS and Android
Sam Lantinga <slouken@libsdl.org>
parents: 7082
diff changeset
   625
    if (SDL_GetEventState(eventType) == SDL_ENABLE) {
11612d544fcd Added mobile application events, with implementations for iOS and Android
Sam Lantinga <slouken@libsdl.org>
parents: 7082
diff changeset
   626
        SDL_Event event;
11612d544fcd Added mobile application events, with implementations for iOS and Android
Sam Lantinga <slouken@libsdl.org>
parents: 7082
diff changeset
   627
        event.type = eventType;
11612d544fcd Added mobile application events, with implementations for iOS and Android
Sam Lantinga <slouken@libsdl.org>
parents: 7082
diff changeset
   628
        posted = (SDL_PushEvent(&event) > 0);
11612d544fcd Added mobile application events, with implementations for iOS and Android
Sam Lantinga <slouken@libsdl.org>
parents: 7082
diff changeset
   629
    }
11612d544fcd Added mobile application events, with implementations for iOS and Android
Sam Lantinga <slouken@libsdl.org>
parents: 7082
diff changeset
   630
    return (posted);
11612d544fcd Added mobile application events, with implementations for iOS and Android
Sam Lantinga <slouken@libsdl.org>
parents: 7082
diff changeset
   631
}
11612d544fcd Added mobile application events, with implementations for iOS and Android
Sam Lantinga <slouken@libsdl.org>
parents: 7082
diff changeset
   632
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   633
int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   634
SDL_SendSysWMEvent(SDL_SysWMmsg * message)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   635
{
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   636
    int posted;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   637
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   638
    posted = 0;
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   639
    if (SDL_GetEventState(SDL_SYSWMEVENT) == SDL_ENABLE) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   640
        SDL_Event event;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   641
        SDL_memset(&event, 0, sizeof(event));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   642
        event.type = SDL_SYSWMEVENT;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   643
        event.syswm.msg = message;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   644
        posted = (SDL_PushEvent(&event) > 0);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   645
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   646
    /* Update internal event state */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   647
    return (posted);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   648
}
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   649
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   650
/* vi: set ts=4 sw=4 expandtab: */