slouken@0
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1 |
/*
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slouken@5535
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Simple DirectMedia Layer
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slouken@6138
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Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
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slouken@0
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slouken@5535
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This software is provided 'as-is', without any express or implied
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slouken@5535
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warranty. In no event will the authors be held liable for any damages
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slouken@5535
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arising from the use of this software.
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slouken@0
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slouken@5535
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Permission is granted to anyone to use this software for any purpose,
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slouken@5535
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including commercial applications, and to alter it and redistribute it
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slouken@5535
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freely, subject to the following restrictions:
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slouken@0
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slouken@5535
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1. The origin of this software must not be misrepresented; you must not
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slouken@5535
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claim that you wrote the original software. If you use this software
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slouken@5535
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in a product, an acknowledgment in the product documentation would be
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slouken@5535
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appreciated but is not required.
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slouken@5535
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2. Altered source versions must be plainly marked as such, and must not be
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slouken@5535
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misrepresented as being the original software.
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slouken@5535
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3. This notice may not be removed or altered from any source distribution.
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slouken@0
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*/
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slouken@1402
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#include "SDL_config.h"
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slouken@0
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slouken@0
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/* General event handling code for SDL */
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slouken@0
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slouken@0
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#include "SDL.h"
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slouken@2984
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#include "SDL_events.h"
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slouken@0
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#include "SDL_syswm.h"
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slouken@2984
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#include "SDL_thread.h"
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slouken@1361
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#include "SDL_events_c.h"
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slouken@1361
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#include "../timer/SDL_timer_c.h"
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slouken@1361
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#if !SDL_JOYSTICK_DISABLED
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slouken@1361
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#include "../joystick/SDL_joystick_c.h"
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slouken@1361
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#endif
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slouken@5123
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#include "../video/SDL_sysvideo.h"
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slouken@0
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slouken@0
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/* Public data -- the event filter */
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slouken@0
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SDL_EventFilter SDL_EventOK = NULL;
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slouken@1895
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void *SDL_EventOKParam;
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slouken@4429
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slouken@5146
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typedef struct SDL_EventWatcher {
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slouken@5146
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SDL_EventFilter callback;
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void *userdata;
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slouken@5146
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struct SDL_EventWatcher *next;
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slouken@5146
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} SDL_EventWatcher;
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slouken@5146
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slouken@5146
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static SDL_EventWatcher *SDL_event_watchers = NULL;
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slouken@5146
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typedef struct {
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slouken@4429
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Uint32 bits[8];
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slouken@4429
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} SDL_DisabledEventBlock;
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slouken@4429
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slouken@4429
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static SDL_DisabledEventBlock *SDL_disabled_events[256];
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slouken@4429
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static Uint32 SDL_userevents = SDL_USEREVENT;
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slouken@0
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slouken@0
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/* Private data -- event queue */
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slouken@0
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#define MAXEVENTS 128
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slouken@1895
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static struct
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slouken@1895
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{
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slouken@1895
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SDL_mutex *lock;
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slouken@1895
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int active;
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slouken@1895
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int head;
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slouken@1895
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int tail;
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slouken@1895
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SDL_Event event[MAXEVENTS];
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slouken@1895
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int wmmsg_next;
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slouken@1895
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struct SDL_SysWMmsg wmmsg[MAXEVENTS];
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slouken@6588
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} SDL_EventQ = { NULL, 1 };
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slouken@0
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slouken@0
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slouken@4429
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static __inline__ SDL_bool
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slouken@4429
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SDL_ShouldPollJoystick()
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{
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paul@4698
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#if !SDL_JOYSTICK_DISABLED
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slouken@6753
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if ((!SDL_disabled_events[SDL_JOYAXISMOTION >> 8] ||
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slouken@6753
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SDL_JoystickEventState(SDL_QUERY)) &&
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slouken@6753
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SDL_PrivateJoystickNeedsPolling()) {
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slouken@4429
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return SDL_TRUE;
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slouken@4429
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}
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paul@4698
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#endif
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return SDL_FALSE;
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}
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slouken@0
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/* Public functions */
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slouken@0
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slouken@1895
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void
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slouken@1895
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SDL_StopEventLoop(void)
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slouken@0
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{
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slouken@4429
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int i;
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slouken@4429
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slouken@6495
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SDL_EventQ.active = 0;
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if (SDL_EventQ.lock) {
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SDL_DestroyMutex(SDL_EventQ.lock);
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slouken@5123
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SDL_EventQ.lock = NULL;
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slouken@5123
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}
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slouken@1123
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slouken@1895
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/* Clean out EventQ */
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slouken@1895
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SDL_EventQ.head = 0;
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slouken@1895
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SDL_EventQ.tail = 0;
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slouken@1895
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SDL_EventQ.wmmsg_next = 0;
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slouken@4429
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slouken@4429
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/* Clear disabled event state */
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slouken@4429
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for (i = 0; i < SDL_arraysize(SDL_disabled_events); ++i) {
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slouken@4429
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if (SDL_disabled_events[i]) {
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slouken@4429
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SDL_free(SDL_disabled_events[i]);
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slouken@4429
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SDL_disabled_events[i] = NULL;
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slouken@4429
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}
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slouken@4429
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}
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slouken@5146
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slouken@5146
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while (SDL_event_watchers) {
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slouken@5146
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SDL_EventWatcher *tmp = SDL_event_watchers;
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slouken@5146
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SDL_event_watchers = tmp->next;
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slouken@5146
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SDL_free(tmp);
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slouken@5146
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}
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slouken@0
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}
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slouken@0
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slouken@0
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/* This function (and associated calls) may be called more than once */
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slouken@1895
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int
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slouken@5123
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SDL_StartEventLoop(void)
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slouken@0
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{
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/* We'll leave the event queue alone, since we might have gotten
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slouken@6588
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some important events at launch (like SDL_DROPFILE)
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slouken@6588
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slouken@6588
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FIXME: Does this introduce any other bugs with events at startup?
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slouken@6588
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*/
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slouken@0
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slouken@1895
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/* No filter to start with, process most event types */
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slouken@1895
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SDL_EventOK = NULL;
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slouken@6670
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SDL_EventState(SDL_TEXTINPUT, SDL_DISABLE);
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slouken@6670
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SDL_EventState(SDL_TEXTEDITING, SDL_DISABLE);
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slouken@4429
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SDL_EventState(SDL_SYSWMEVENT, SDL_DISABLE);
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slouken@0
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slouken@5123
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/* Create the lock and set ourselves active */
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slouken@5123
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#if !SDL_THREADS_DISABLED
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slouken@6588
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if (!SDL_EventQ.lock) {
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slouken@6588
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SDL_EventQ.lock = SDL_CreateMutex();
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slouken@6588
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}
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slouken@5123
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if (SDL_EventQ.lock == NULL) {
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slouken@1895
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return (-1);
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slouken@1895
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}
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slouken@5123
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#endif /* !SDL_THREADS_DISABLED */
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slouken@5123
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SDL_EventQ.active = 1;
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slouken@1895
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slouken@1895
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return (0);
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slouken@0
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}
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slouken@0
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slouken@0
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slouken@0
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/* Add an event to the event queue -- called with the queue locked */
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slouken@1895
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static int
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slouken@1895
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SDL_AddEvent(SDL_Event * event)
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slouken@0
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{
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slouken@1895
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int tail, added;
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slouken@0
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slouken@1895
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tail = (SDL_EventQ.tail + 1) % MAXEVENTS;
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slouken@1895
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if (tail == SDL_EventQ.head) {
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slouken@1895
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/* Overflow, drop event */
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slouken@1895
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added = 0;
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slouken@1895
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} else {
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slouken@1895
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SDL_EventQ.event[SDL_EventQ.tail] = *event;
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slouken@1895
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if (event->type == SDL_SYSWMEVENT) {
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slouken@1895
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/* Note that it's possible to lose an event */
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slouken@1895
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int next = SDL_EventQ.wmmsg_next;
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slouken@1895
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SDL_EventQ.wmmsg[next] = *event->syswm.msg;
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slouken@1895
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SDL_EventQ.event[SDL_EventQ.tail].syswm.msg =
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slouken@1895
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&SDL_EventQ.wmmsg[next];
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slouken@1895
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SDL_EventQ.wmmsg_next = (next + 1) % MAXEVENTS;
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slouken@1895
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}
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slouken@1895
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SDL_EventQ.tail = tail;
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slouken@1895
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added = 1;
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slouken@1895
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}
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slouken@1895
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return (added);
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slouken@0
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}
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slouken@0
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slouken@0
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/* Cut an event, and return the next valid spot, or the tail */
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slouken@0
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/* -- called with the queue locked */
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slouken@1895
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static int
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slouken@1895
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SDL_CutEvent(int spot)
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slouken@0
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{
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slouken@1895
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178 |
if (spot == SDL_EventQ.head) {
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slouken@1895
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SDL_EventQ.head = (SDL_EventQ.head + 1) % MAXEVENTS;
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slouken@1895
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180 |
return (SDL_EventQ.head);
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slouken@1895
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181 |
} else if ((spot + 1) % MAXEVENTS == SDL_EventQ.tail) {
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slouken@1895
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SDL_EventQ.tail = spot;
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slouken@1895
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return (SDL_EventQ.tail);
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slouken@1895
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} else
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slouken@1895
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185 |
/* We cut the middle -- shift everything over */
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slouken@1895
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{
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slouken@1895
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187 |
int here, next;
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slouken@0
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188 |
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slouken@1895
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189 |
/* This can probably be optimized with SDL_memcpy() -- careful! */
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slouken@1895
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if (--SDL_EventQ.tail < 0) {
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slouken@1895
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191 |
SDL_EventQ.tail = MAXEVENTS - 1;
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slouken@1895
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192 |
}
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slouken@1895
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193 |
for (here = spot; here != SDL_EventQ.tail; here = next) {
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slouken@1895
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next = (here + 1) % MAXEVENTS;
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slouken@1895
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195 |
SDL_EventQ.event[here] = SDL_EventQ.event[next];
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slouken@1895
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196 |
}
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slouken@1895
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197 |
return (spot);
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slouken@1895
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}
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slouken@1895
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199 |
/* NOTREACHED */
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slouken@0
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200 |
}
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slouken@0
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201 |
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slouken@0
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202 |
/* Lock the event queue, take a peep at it, and unlock it */
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slouken@1895
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203 |
int
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slouken@1895
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204 |
SDL_PeepEvents(SDL_Event * events, int numevents, SDL_eventaction action,
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slouken@4429
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205 |
Uint32 minType, Uint32 maxType)
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slouken@0
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206 |
{
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slouken@1895
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207 |
int i, used;
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slouken@0
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208 |
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slouken@1895
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209 |
/* Don't look after we've quit */
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slouken@1895
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210 |
if (!SDL_EventQ.active) {
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slouken@1895
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211 |
return (-1);
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slouken@1895
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212 |
}
|
slouken@1895
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213 |
/* Lock the event queue */
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slouken@1895
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214 |
used = 0;
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slouken@6588
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215 |
if (!SDL_EventQ.lock || SDL_mutexP(SDL_EventQ.lock) == 0) {
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slouken@1895
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216 |
if (action == SDL_ADDEVENT) {
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slouken@1895
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217 |
for (i = 0; i < numevents; ++i) {
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slouken@1895
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218 |
used += SDL_AddEvent(&events[i]);
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slouken@1895
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219 |
}
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slouken@1895
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220 |
} else {
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slouken@1895
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221 |
SDL_Event tmpevent;
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slouken@1895
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222 |
int spot;
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slouken@0
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223 |
|
slouken@1895
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224 |
/* If 'events' is NULL, just see if they exist */
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slouken@1895
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225 |
if (events == NULL) {
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slouken@1895
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226 |
action = SDL_PEEKEVENT;
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slouken@1895
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227 |
numevents = 1;
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slouken@1895
|
228 |
events = &tmpevent;
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slouken@1895
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229 |
}
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slouken@1895
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230 |
spot = SDL_EventQ.head;
|
slouken@1895
|
231 |
while ((used < numevents) && (spot != SDL_EventQ.tail)) {
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slouken@4429
|
232 |
Uint32 type = SDL_EventQ.event[spot].type;
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slouken@4429
|
233 |
if (minType <= type && type <= maxType) {
|
slouken@1895
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234 |
events[used++] = SDL_EventQ.event[spot];
|
slouken@1895
|
235 |
if (action == SDL_GETEVENT) {
|
slouken@1895
|
236 |
spot = SDL_CutEvent(spot);
|
slouken@1895
|
237 |
} else {
|
slouken@1895
|
238 |
spot = (spot + 1) % MAXEVENTS;
|
slouken@1895
|
239 |
}
|
slouken@1895
|
240 |
} else {
|
slouken@1895
|
241 |
spot = (spot + 1) % MAXEVENTS;
|
slouken@1895
|
242 |
}
|
slouken@1895
|
243 |
}
|
slouken@1895
|
244 |
}
|
slouken@1895
|
245 |
SDL_mutexV(SDL_EventQ.lock);
|
slouken@1895
|
246 |
} else {
|
slouken@1895
|
247 |
SDL_SetError("Couldn't lock event queue");
|
slouken@1895
|
248 |
used = -1;
|
slouken@1895
|
249 |
}
|
slouken@1895
|
250 |
return (used);
|
slouken@1895
|
251 |
}
|
slouken@1895
|
252 |
|
slouken@1895
|
253 |
SDL_bool
|
slouken@4429
|
254 |
SDL_HasEvent(Uint32 type)
|
slouken@4429
|
255 |
{
|
slouken@4429
|
256 |
return (SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, type, type) > 0);
|
slouken@4429
|
257 |
}
|
slouken@4429
|
258 |
|
slouken@4429
|
259 |
SDL_bool
|
slouken@4429
|
260 |
SDL_HasEvents(Uint32 minType, Uint32 maxType)
|
slouken@4429
|
261 |
{
|
slouken@4429
|
262 |
return (SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, minType, maxType) > 0);
|
slouken@4429
|
263 |
}
|
slouken@4429
|
264 |
|
slouken@4429
|
265 |
void
|
slouken@4429
|
266 |
SDL_FlushEvent(Uint32 type)
|
slouken@1895
|
267 |
{
|
slouken@4429
|
268 |
SDL_FlushEvents(type, type);
|
slouken@4429
|
269 |
}
|
slouken@4429
|
270 |
|
slouken@4429
|
271 |
void
|
slouken@4429
|
272 |
SDL_FlushEvents(Uint32 minType, Uint32 maxType)
|
slouken@4429
|
273 |
{
|
slouken@4429
|
274 |
/* Don't look after we've quit */
|
slouken@4429
|
275 |
if (!SDL_EventQ.active) {
|
slouken@4429
|
276 |
return;
|
slouken@4429
|
277 |
}
|
slouken@4429
|
278 |
|
slouken@4460
|
279 |
/* Make sure the events are current */
|
slouken@5293
|
280 |
#if 0
|
slouken@5293
|
281 |
/* Actually, we can't do this since we might be flushing while processing
|
slouken@5293
|
282 |
a resize event, and calling this might trigger further resize events.
|
slouken@5293
|
283 |
*/
|
slouken@4460
|
284 |
SDL_PumpEvents();
|
slouken@5293
|
285 |
#endif
|
slouken@4460
|
286 |
|
slouken@4429
|
287 |
/* Lock the event queue */
|
slouken@4429
|
288 |
if (SDL_mutexP(SDL_EventQ.lock) == 0) {
|
slouken@4429
|
289 |
int spot = SDL_EventQ.head;
|
slouken@4429
|
290 |
while (spot != SDL_EventQ.tail) {
|
slouken@4429
|
291 |
Uint32 type = SDL_EventQ.event[spot].type;
|
slouken@4429
|
292 |
if (minType <= type && type <= maxType) {
|
slouken@4429
|
293 |
spot = SDL_CutEvent(spot);
|
slouken@4429
|
294 |
} else {
|
slouken@4429
|
295 |
spot = (spot + 1) % MAXEVENTS;
|
slouken@4429
|
296 |
}
|
slouken@4429
|
297 |
}
|
slouken@4429
|
298 |
SDL_mutexV(SDL_EventQ.lock);
|
slouken@4429
|
299 |
}
|
slouken@0
|
300 |
}
|
slouken@0
|
301 |
|
slouken@0
|
302 |
/* Run the system dependent event loops */
|
slouken@1895
|
303 |
void
|
slouken@1895
|
304 |
SDL_PumpEvents(void)
|
slouken@0
|
305 |
{
|
slouken@5123
|
306 |
SDL_VideoDevice *_this = SDL_GetVideoDevice();
|
slouken@0
|
307 |
|
slouken@5123
|
308 |
/* Get events from the video subsystem */
|
slouken@5123
|
309 |
if (_this) {
|
slouken@5123
|
310 |
_this->PumpEvents(_this);
|
slouken@5123
|
311 |
}
|
slouken@1361
|
312 |
#if !SDL_JOYSTICK_DISABLED
|
slouken@5123
|
313 |
/* Check for joystick state change */
|
slouken@5123
|
314 |
if (SDL_ShouldPollJoystick()) {
|
slouken@5123
|
315 |
SDL_JoystickUpdate();
|
slouken@5123
|
316 |
}
|
slouken@0
|
317 |
#endif
|
slouken@0
|
318 |
}
|
slouken@0
|
319 |
|
slouken@0
|
320 |
/* Public functions */
|
slouken@0
|
321 |
|
slouken@1895
|
322 |
int
|
slouken@1895
|
323 |
SDL_PollEvent(SDL_Event * event)
|
slouken@0
|
324 |
{
|
slouken@3072
|
325 |
return SDL_WaitEventTimeout(event, 0);
|
slouken@1895
|
326 |
}
|
slouken@0
|
327 |
|
slouken@1895
|
328 |
int
|
slouken@1895
|
329 |
SDL_WaitEvent(SDL_Event * event)
|
slouken@1895
|
330 |
{
|
slouken@3072
|
331 |
return SDL_WaitEventTimeout(event, -1);
|
slouken@3072
|
332 |
}
|
slouken@3072
|
333 |
|
slouken@3072
|
334 |
int
|
slouken@3072
|
335 |
SDL_WaitEventTimeout(SDL_Event * event, int timeout)
|
slouken@3072
|
336 |
{
|
slouken@3072
|
337 |
Uint32 expiration = 0;
|
slouken@3072
|
338 |
|
slouken@3072
|
339 |
if (timeout > 0)
|
slouken@3072
|
340 |
expiration = SDL_GetTicks() + timeout;
|
slouken@3072
|
341 |
|
slouken@3072
|
342 |
for (;;) {
|
slouken@1895
|
343 |
SDL_PumpEvents();
|
slouken@4429
|
344 |
switch (SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT)) {
|
slouken@1895
|
345 |
case -1:
|
slouken@1895
|
346 |
return 0;
|
slouken@1895
|
347 |
case 1:
|
slouken@1895
|
348 |
return 1;
|
slouken@1895
|
349 |
case 0:
|
slouken@3072
|
350 |
if (timeout == 0) {
|
slouken@3072
|
351 |
/* Polling and no events, just return */
|
slouken@3072
|
352 |
return 0;
|
slouken@3072
|
353 |
}
|
slouken@3072
|
354 |
if (timeout > 0 && ((int) (SDL_GetTicks() - expiration) >= 0)) {
|
slouken@3072
|
355 |
/* Timeout expired and no events */
|
slouken@3072
|
356 |
return 0;
|
slouken@3072
|
357 |
}
|
slouken@1895
|
358 |
SDL_Delay(10);
|
slouken@3072
|
359 |
break;
|
slouken@1895
|
360 |
}
|
slouken@1895
|
361 |
}
|
slouken@0
|
362 |
}
|
slouken@0
|
363 |
|
slouken@1895
|
364 |
int
|
slouken@1895
|
365 |
SDL_PushEvent(SDL_Event * event)
|
slouken@0
|
366 |
{
|
slouken@5146
|
367 |
SDL_EventWatcher *curr;
|
slouken@6114
|
368 |
event->window.timestamp = SDL_GetTicks();
|
slouken@1895
|
369 |
if (SDL_EventOK && !SDL_EventOK(SDL_EventOKParam, event)) {
|
slouken@1895
|
370 |
return 0;
|
slouken@1895
|
371 |
}
|
slouken@5146
|
372 |
|
slouken@5146
|
373 |
for (curr = SDL_event_watchers; curr; curr = curr->next) {
|
slouken@5146
|
374 |
curr->callback(curr->userdata, event);
|
slouken@5146
|
375 |
}
|
slouken@5146
|
376 |
|
slouken@4429
|
377 |
if (SDL_PeepEvents(event, 1, SDL_ADDEVENT, 0, 0) <= 0) {
|
slouken@1895
|
378 |
return -1;
|
slouken@1895
|
379 |
}
|
jim@4657
|
380 |
|
jim@4657
|
381 |
SDL_GestureProcessEvent(event);
|
jim@4657
|
382 |
|
slouken@1895
|
383 |
return 1;
|
slouken@0
|
384 |
}
|
slouken@0
|
385 |
|
slouken@1895
|
386 |
void
|
slouken@1895
|
387 |
SDL_SetEventFilter(SDL_EventFilter filter, void *userdata)
|
slouken@0
|
388 |
{
|
slouken@1895
|
389 |
SDL_Event bitbucket;
|
slouken@1895
|
390 |
|
slouken@1895
|
391 |
/* Set filter and discard pending events */
|
slouken@1895
|
392 |
SDL_EventOK = filter;
|
slouken@1895
|
393 |
SDL_EventOKParam = userdata;
|
slouken@1895
|
394 |
while (SDL_PollEvent(&bitbucket) > 0);
|
slouken@0
|
395 |
}
|
slouken@0
|
396 |
|
slouken@1895
|
397 |
SDL_bool
|
slouken@1895
|
398 |
SDL_GetEventFilter(SDL_EventFilter * filter, void **userdata)
|
slouken@0
|
399 |
{
|
slouken@1895
|
400 |
if (filter) {
|
slouken@1895
|
401 |
*filter = SDL_EventOK;
|
slouken@1895
|
402 |
}
|
slouken@1895
|
403 |
if (userdata) {
|
slouken@1895
|
404 |
*userdata = SDL_EventOKParam;
|
slouken@1895
|
405 |
}
|
slouken@1895
|
406 |
return SDL_EventOK ? SDL_TRUE : SDL_FALSE;
|
slouken@0
|
407 |
}
|
slouken@0
|
408 |
|
slouken@5146
|
409 |
/* FIXME: This is not thread-safe yet */
|
slouken@5146
|
410 |
void
|
slouken@5146
|
411 |
SDL_AddEventWatch(SDL_EventFilter filter, void *userdata)
|
slouken@5146
|
412 |
{
|
slouken@5146
|
413 |
SDL_EventWatcher *watcher;
|
slouken@5146
|
414 |
|
slouken@5146
|
415 |
watcher = (SDL_EventWatcher *)SDL_malloc(sizeof(*watcher));
|
slouken@5146
|
416 |
if (!watcher) {
|
slouken@5146
|
417 |
/* Uh oh... */
|
slouken@5146
|
418 |
return;
|
slouken@5146
|
419 |
}
|
slouken@5146
|
420 |
watcher->callback = filter;
|
slouken@5146
|
421 |
watcher->userdata = userdata;
|
slouken@5146
|
422 |
watcher->next = SDL_event_watchers;
|
slouken@5146
|
423 |
SDL_event_watchers = watcher;
|
slouken@5146
|
424 |
}
|
slouken@5146
|
425 |
|
slouken@5146
|
426 |
/* FIXME: This is not thread-safe yet */
|
slouken@5146
|
427 |
void
|
slouken@5146
|
428 |
SDL_DelEventWatch(SDL_EventFilter filter, void *userdata)
|
slouken@5146
|
429 |
{
|
slouken@5146
|
430 |
SDL_EventWatcher *prev = NULL;
|
slouken@5146
|
431 |
SDL_EventWatcher *curr;
|
slouken@5146
|
432 |
|
slouken@5146
|
433 |
for (curr = SDL_event_watchers; curr; prev = curr, curr = curr->next) {
|
slouken@5146
|
434 |
if (curr->callback == filter && curr->userdata == userdata) {
|
slouken@5146
|
435 |
if (prev) {
|
slouken@5146
|
436 |
prev->next = curr->next;
|
slouken@5146
|
437 |
} else {
|
slouken@5146
|
438 |
SDL_event_watchers = curr->next;
|
slouken@5146
|
439 |
}
|
slouken@5146
|
440 |
SDL_free(curr);
|
slouken@5146
|
441 |
break;
|
slouken@5146
|
442 |
}
|
slouken@5146
|
443 |
}
|
slouken@5146
|
444 |
}
|
slouken@5146
|
445 |
|
slouken@1895
|
446 |
void
|
slouken@1895
|
447 |
SDL_FilterEvents(SDL_EventFilter filter, void *userdata)
|
slouken@0
|
448 |
{
|
slouken@1895
|
449 |
if (SDL_mutexP(SDL_EventQ.lock) == 0) {
|
slouken@1895
|
450 |
int spot;
|
slouken@1895
|
451 |
|
slouken@1895
|
452 |
spot = SDL_EventQ.head;
|
slouken@1895
|
453 |
while (spot != SDL_EventQ.tail) {
|
slouken@1895
|
454 |
if (filter(userdata, &SDL_EventQ.event[spot])) {
|
slouken@1895
|
455 |
spot = (spot + 1) % MAXEVENTS;
|
slouken@1895
|
456 |
} else {
|
slouken@1895
|
457 |
spot = SDL_CutEvent(spot);
|
slouken@1895
|
458 |
}
|
slouken@1895
|
459 |
}
|
slouken@1895
|
460 |
}
|
slouken@1895
|
461 |
SDL_mutexV(SDL_EventQ.lock);
|
slouken@1895
|
462 |
}
|
slouken@1895
|
463 |
|
slouken@1895
|
464 |
Uint8
|
slouken@4429
|
465 |
SDL_EventState(Uint32 type, int state)
|
slouken@1895
|
466 |
{
|
slouken@1895
|
467 |
Uint8 current_state;
|
slouken@4429
|
468 |
Uint8 hi = ((type >> 8) & 0xff);
|
slouken@4429
|
469 |
Uint8 lo = (type & 0xff);
|
slouken@0
|
470 |
|
slouken@4429
|
471 |
if (SDL_disabled_events[hi] &&
|
slouken@4429
|
472 |
(SDL_disabled_events[hi]->bits[lo/32] & (1 << (lo&31)))) {
|
slouken@4429
|
473 |
current_state = SDL_DISABLE;
|
slouken@4429
|
474 |
} else {
|
slouken@4429
|
475 |
current_state = SDL_ENABLE;
|
slouken@1895
|
476 |
}
|
slouken@0
|
477 |
|
slouken@4429
|
478 |
if (state != current_state)
|
slouken@4429
|
479 |
{
|
slouken@4429
|
480 |
switch (state) {
|
slouken@4429
|
481 |
case SDL_DISABLE:
|
slouken@4429
|
482 |
/* Disable this event type and discard pending events */
|
slouken@4429
|
483 |
if (!SDL_disabled_events[hi]) {
|
slouken@4429
|
484 |
SDL_disabled_events[hi] = (SDL_DisabledEventBlock*) SDL_calloc(1, sizeof(SDL_DisabledEventBlock));
|
slouken@4429
|
485 |
if (!SDL_disabled_events[hi]) {
|
slouken@4429
|
486 |
/* Out of memory, nothing we can do... */
|
slouken@4429
|
487 |
break;
|
slouken@4429
|
488 |
}
|
slouken@4429
|
489 |
}
|
slouken@4429
|
490 |
SDL_disabled_events[hi]->bits[lo/32] |= (1 << (lo&31));
|
slouken@4429
|
491 |
SDL_FlushEvent(type);
|
slouken@4429
|
492 |
break;
|
slouken@4429
|
493 |
case SDL_ENABLE:
|
slouken@4429
|
494 |
SDL_disabled_events[hi]->bits[lo/32] &= ~(1 << (lo&31));
|
slouken@4429
|
495 |
break;
|
slouken@4429
|
496 |
default:
|
slouken@4429
|
497 |
/* Querying state... */
|
slouken@4429
|
498 |
break;
|
slouken@1895
|
499 |
}
|
slouken@1895
|
500 |
}
|
slouken@4429
|
501 |
|
slouken@4429
|
502 |
return current_state;
|
slouken@4429
|
503 |
}
|
slouken@4429
|
504 |
|
slouken@4429
|
505 |
Uint32
|
slouken@4429
|
506 |
SDL_RegisterEvents(int numevents)
|
slouken@4429
|
507 |
{
|
slouken@4429
|
508 |
Uint32 event_base;
|
slouken@4429
|
509 |
|
slouken@4429
|
510 |
if (SDL_userevents+numevents <= SDL_LASTEVENT) {
|
slouken@4429
|
511 |
event_base = SDL_userevents;
|
slouken@4429
|
512 |
SDL_userevents += numevents;
|
slouken@4429
|
513 |
} else {
|
slouken@4429
|
514 |
event_base = (Uint32)-1;
|
slouken@4429
|
515 |
}
|
slouken@4429
|
516 |
return event_base;
|
slouken@0
|
517 |
}
|
slouken@0
|
518 |
|
slouken@0
|
519 |
/* This is a generic event handler.
|
slouken@0
|
520 |
*/
|
slouken@1895
|
521 |
int
|
slouken@1895
|
522 |
SDL_SendSysWMEvent(SDL_SysWMmsg * message)
|
slouken@0
|
523 |
{
|
slouken@1895
|
524 |
int posted;
|
slouken@0
|
525 |
|
slouken@1895
|
526 |
posted = 0;
|
slouken@4429
|
527 |
if (SDL_GetEventState(SDL_SYSWMEVENT) == SDL_ENABLE) {
|
slouken@1895
|
528 |
SDL_Event event;
|
slouken@1895
|
529 |
SDL_memset(&event, 0, sizeof(event));
|
slouken@1895
|
530 |
event.type = SDL_SYSWMEVENT;
|
slouken@1895
|
531 |
event.syswm.msg = message;
|
slouken@1895
|
532 |
posted = (SDL_PushEvent(&event) > 0);
|
slouken@1895
|
533 |
}
|
slouken@1895
|
534 |
/* Update internal event state */
|
slouken@1895
|
535 |
return (posted);
|
slouken@0
|
536 |
}
|
slouken@1895
|
537 |
|
slouken@1895
|
538 |
/* vi: set ts=4 sw=4 expandtab: */
|