annotate src/events/SDL_events.c @ 4729:1f7ad083fd3c

Merged Paul's Google Summer of Code work from SDL-gsoc2010_android
author Sam Lantinga <slouken@libsdl.org>
date Sun, 22 Aug 2010 12:23:55 -0700
parents eed063a0bf5b 52697090c967
children e8916fe9cfc8
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* General event handling code for SDL */
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25
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26 #include "SDL.h"
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27 #include "SDL_events.h"
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28 #include "SDL_syswm.h"
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29 #include "SDL_thread.h"
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30 #include "SDL_sysevents.h"
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31 #include "SDL_events_c.h"
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32 #include "../timer/SDL_timer_c.h"
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33 #if !SDL_JOYSTICK_DISABLED
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34 #include "../joystick/SDL_joystick_c.h"
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35 #endif
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36
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37 /* Public data -- the event filter */
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38 SDL_EventFilter SDL_EventOK = NULL;
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39 void *SDL_EventOKParam;
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40
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41 typedef struct {
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42 Uint32 bits[8];
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43 } SDL_DisabledEventBlock;
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44
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45 static SDL_DisabledEventBlock *SDL_disabled_events[256];
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46 static Uint32 SDL_userevents = SDL_USEREVENT;
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47
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48 /* Private data -- event queue */
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49 #define MAXEVENTS 128
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50 static struct
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51 {
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52 SDL_mutex *lock;
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53 int active;
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54 int head;
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55 int tail;
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56 SDL_Event event[MAXEVENTS];
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57 int wmmsg_next;
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58 struct SDL_SysWMmsg wmmsg[MAXEVENTS];
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59 } SDL_EventQ;
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60
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61 /* Private data -- event locking structure */
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62 static struct
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63 {
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64 SDL_mutex *lock;
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65 int safe;
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66 } SDL_EventLock;
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67
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68 /* Thread functions */
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69 static SDL_Thread *SDL_EventThread = NULL; /* Thread handle */
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70 static SDL_threadID event_thread; /* The event thread id */
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71
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72 void
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73 SDL_Lock_EventThread(void)
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74 {
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75 if (SDL_EventThread && (SDL_ThreadID() != event_thread)) {
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76 /* Grab lock and spin until we're sure event thread stopped */
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77 SDL_mutexP(SDL_EventLock.lock);
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78 while (!SDL_EventLock.safe) {
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79 SDL_Delay(1);
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80 }
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81 }
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82 }
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83
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84 void
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85 SDL_Unlock_EventThread(void)
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86 {
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87 if (SDL_EventThread && (SDL_ThreadID() != event_thread)) {
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88 SDL_mutexV(SDL_EventLock.lock);
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89 }
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90 }
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91
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92 static __inline__ SDL_bool
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93 SDL_ShouldPollJoystick()
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94 {
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95 #if !SDL_JOYSTICK_DISABLED
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96 if (SDL_numjoysticks &&
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97 (!SDL_disabled_events[SDL_JOYAXISMOTION >> 8] ||
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98 SDL_JoystickEventState(SDL_QUERY))) {
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99 return SDL_TRUE;
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100 }
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101 #endif
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102 return SDL_FALSE;
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103 }
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104
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105 static int SDLCALL
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106 SDL_GobbleEvents(void *unused)
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107 {
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108 event_thread = SDL_ThreadID();
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109
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110 while (SDL_EventQ.active) {
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111 SDL_VideoDevice *_this = SDL_GetVideoDevice();
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112
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113 /* Get events from the video subsystem */
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114 if (_this) {
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115 _this->PumpEvents(_this);
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116 }
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117 #if !SDL_JOYSTICK_DISABLED
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118 /* Check for joystick state change */
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119 if (SDL_ShouldPollJoystick()) {
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120 SDL_JoystickUpdate();
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121 }
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122 #endif
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123
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124 /* Give up the CPU for the rest of our timeslice */
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125 SDL_EventLock.safe = 1;
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126 if (SDL_timer_running) {
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127 SDL_ThreadedTimerCheck();
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128 }
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129 SDL_Delay(1);
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130
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131 /* Check for event locking.
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132 On the P of the lock mutex, if the lock is held, this thread
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133 will wait until the lock is released before continuing. The
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134 safe flag will be set, meaning that the other thread can go
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135 about it's business. The safe flag is reset before the V,
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136 so as soon as the mutex is free, other threads can see that
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137 it's not safe to interfere with the event thread.
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138 */
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139 SDL_mutexP(SDL_EventLock.lock);
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140 SDL_EventLock.safe = 0;
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141 SDL_mutexV(SDL_EventLock.lock);
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142 }
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143 SDL_SetTimerThreaded(0);
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144 event_thread = 0;
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145 return (0);
0
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146 }
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147
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148 static int
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149 SDL_StartEventThread(Uint32 flags)
0
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150 {
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151 /* Reset everything to zero */
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152 SDL_EventThread = NULL;
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153 SDL_memset(&SDL_EventLock, 0, sizeof(SDL_EventLock));
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154
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155 /* Create the lock and set ourselves active */
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156 #if !SDL_THREADS_DISABLED
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157 SDL_EventQ.lock = SDL_CreateMutex();
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158 if (SDL_EventQ.lock == NULL) {
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159 return (-1);
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160 }
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161 #endif /* !SDL_THREADS_DISABLED */
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162 SDL_EventQ.active = 1;
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163
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164 if ((flags & SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD) {
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165 SDL_EventLock.lock = SDL_CreateMutex();
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166 if (SDL_EventLock.lock == NULL) {
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167 return (-1);
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168 }
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169 SDL_EventLock.safe = 0;
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170
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171 /* The event thread will handle timers too */
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172 SDL_SetTimerThreaded(2);
1402
d910939febfa Use consistent identifiers for the various platforms we support.
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173 #if (defined(__WIN32__) && !defined(_WIN32_WCE)) && !defined(HAVE_LIBC)
1330
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174 #undef SDL_CreateThread
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175 SDL_EventThread =
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176 SDL_CreateThread(SDL_GobbleEvents, NULL, NULL, NULL);
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177 #else
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178 SDL_EventThread = SDL_CreateThread(SDL_GobbleEvents, NULL);
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179 #endif
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180 if (SDL_EventThread == NULL) {
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181 return (-1);
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182 }
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183 } else {
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184 event_thread = 0;
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185 }
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186 return (0);
0
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187 }
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188
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189 static void
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190 SDL_StopEventThread(void)
0
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191 {
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192 SDL_EventQ.active = 0;
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193 if (SDL_EventThread) {
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194 SDL_WaitThread(SDL_EventThread, NULL);
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195 SDL_EventThread = NULL;
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196 SDL_DestroyMutex(SDL_EventLock.lock);
3611
57823d017f02 Merged r4121:4122 from branches/SDL-1.2: more double-free fixes.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
197 SDL_EventLock.lock = NULL;
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198 }
3259
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199 if (SDL_EventQ.lock) {
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200 SDL_DestroyMutex(SDL_EventQ.lock);
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201 SDL_EventQ.lock = NULL;
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202 }
0
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203 }
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204
3578
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diff changeset
205 SDL_threadID
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206 SDL_EventThreadID(void)
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207 {
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208 return (event_thread);
0
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209 }
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210
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211 /* Public functions */
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212
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213 void
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214 SDL_StopEventLoop(void)
0
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215 {
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216 int i;
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217
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218 /* Halt the event thread, if running */
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219 SDL_StopEventThread();
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220
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221 /* Shutdown event handlers */
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222 SDL_KeyboardQuit();
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223 SDL_MouseQuit();
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diff changeset
224 SDL_QuitQuit();
1123
28ac87a38c17 Date: Fri, 08 Jul 2005 22:43:48 +0200 (CEST)
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diff changeset
225
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226 /* Clean out EventQ */
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227 SDL_EventQ.head = 0;
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228 SDL_EventQ.tail = 0;
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229 SDL_EventQ.wmmsg_next = 0;
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diff changeset
230
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231 /* Clear disabled event state */
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diff changeset
232 for (i = 0; i < SDL_arraysize(SDL_disabled_events); ++i) {
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233 if (SDL_disabled_events[i]) {
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234 SDL_free(SDL_disabled_events[i]);
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235 SDL_disabled_events[i] = NULL;
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236 }
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237 }
0
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238 }
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239
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240 /* This function (and associated calls) may be called more than once */
1895
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241 int
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242 SDL_StartEventLoop(Uint32 flags)
0
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243 {
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244 int retcode;
0
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245
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246 /* Clean out the event queue */
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247 SDL_EventThread = NULL;
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248 SDL_EventQ.lock = NULL;
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249 SDL_StopEventLoop();
0
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250
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251 /* No filter to start with, process most event types */
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252 SDL_EventOK = NULL;
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253 SDL_EventState(SDL_SYSWMEVENT, SDL_DISABLE);
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254
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255 /* Initialize event handlers */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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256 retcode = 0;
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257 retcode += SDL_KeyboardInit();
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258 retcode += SDL_MouseInit();
4642
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259 retcode += SDL_TouchInit();
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260 retcode += SDL_QuitInit();
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261 if (retcode < 0) {
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262 /* We don't expect them to fail, but... */
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263 return (-1);
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diff changeset
264 }
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diff changeset
265
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266 /* Create the lock and event thread */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
267 if (SDL_StartEventThread(flags) < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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268 SDL_StopEventLoop();
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269 return (-1);
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diff changeset
270 }
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diff changeset
271 return (0);
0
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272 }
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273
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274
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275 /* Add an event to the event queue -- called with the queue locked */
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276 static int
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277 SDL_AddEvent(SDL_Event * event)
0
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278 {
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279 int tail, added;
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280
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281 tail = (SDL_EventQ.tail + 1) % MAXEVENTS;
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282 if (tail == SDL_EventQ.head) {
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283 /* Overflow, drop event */
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284 added = 0;
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285 } else {
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286 SDL_EventQ.event[SDL_EventQ.tail] = *event;
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287 if (event->type == SDL_SYSWMEVENT) {
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288 /* Note that it's possible to lose an event */
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289 int next = SDL_EventQ.wmmsg_next;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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290 SDL_EventQ.wmmsg[next] = *event->syswm.msg;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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291 SDL_EventQ.event[SDL_EventQ.tail].syswm.msg =
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292 &SDL_EventQ.wmmsg[next];
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293 SDL_EventQ.wmmsg_next = (next + 1) % MAXEVENTS;
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294 }
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295 SDL_EventQ.tail = tail;
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296 added = 1;
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297 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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298 return (added);
0
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299 }
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300
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301 /* Cut an event, and return the next valid spot, or the tail */
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302 /* -- called with the queue locked */
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303 static int
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304 SDL_CutEvent(int spot)
0
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305 {
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306 if (spot == SDL_EventQ.head) {
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307 SDL_EventQ.head = (SDL_EventQ.head + 1) % MAXEVENTS;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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308 return (SDL_EventQ.head);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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309 } else if ((spot + 1) % MAXEVENTS == SDL_EventQ.tail) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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310 SDL_EventQ.tail = spot;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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311 return (SDL_EventQ.tail);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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312 } else
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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313 /* We cut the middle -- shift everything over */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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314 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
315 int here, next;
0
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316
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diff changeset
317 /* This can probably be optimized with SDL_memcpy() -- careful! */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
318 if (--SDL_EventQ.tail < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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319 SDL_EventQ.tail = MAXEVENTS - 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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320 }
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321 for (here = spot; here != SDL_EventQ.tail; here = next) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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322 next = (here + 1) % MAXEVENTS;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
323 SDL_EventQ.event[here] = SDL_EventQ.event[next];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
324 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
325 return (spot);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
326 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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327 /* NOTREACHED */
0
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328 }
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329
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330 /* Lock the event queue, take a peep at it, and unlock it */
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c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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331 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
332 SDL_PeepEvents(SDL_Event * events, int numevents, SDL_eventaction action,
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333 Uint32 minType, Uint32 maxType)
0
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334 {
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335 int i, used;
0
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336
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337 /* Don't look after we've quit */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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338 if (!SDL_EventQ.active) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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339 return (-1);
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340 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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341 /* Lock the event queue */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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342 used = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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343 if (SDL_mutexP(SDL_EventQ.lock) == 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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344 if (action == SDL_ADDEVENT) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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345 for (i = 0; i < numevents; ++i) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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346 used += SDL_AddEvent(&events[i]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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347 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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348 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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349 SDL_Event tmpevent;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
350 int spot;
0
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351
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352 /* If 'events' is NULL, just see if they exist */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
353 if (events == NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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354 action = SDL_PEEKEVENT;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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355 numevents = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
356 events = &tmpevent;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
357 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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358 spot = SDL_EventQ.head;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
359 while ((used < numevents) && (spot != SDL_EventQ.tail)) {
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360 Uint32 type = SDL_EventQ.event[spot].type;
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
361 if (minType <= type && type <= maxType) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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362 events[used++] = SDL_EventQ.event[spot];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
363 if (action == SDL_GETEVENT) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
364 spot = SDL_CutEvent(spot);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
365 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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366 spot = (spot + 1) % MAXEVENTS;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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367 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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368 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
369 spot = (spot + 1) % MAXEVENTS;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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370 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1769
diff changeset
371 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
372 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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373 SDL_mutexV(SDL_EventQ.lock);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
374 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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375 SDL_SetError("Couldn't lock event queue");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
376 used = -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
377 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
378 return (used);
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
379 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
380
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
381 SDL_bool
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diff changeset
382 SDL_HasEvent(Uint32 type)
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
383 {
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
384 return (SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, type, type) > 0);
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
385 }
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
386
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
387 SDL_bool
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
388 SDL_HasEvents(Uint32 minType, Uint32 maxType)
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
389 {
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
390 return (SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, minType, maxType) > 0);
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
391 }
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
392
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
393 void
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
394 SDL_FlushEvent(Uint32 type)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
395 {
4429
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diff changeset
396 SDL_FlushEvents(type, type);
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
397 }
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
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diff changeset
398
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
399 void
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diff changeset
400 SDL_FlushEvents(Uint32 minType, Uint32 maxType)
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
401 {
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
402 /* Don't look after we've quit */
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
403 if (!SDL_EventQ.active) {
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
404 return;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
405 }
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
406
4460
363604b42e84 Make sure events are current before flushing them.
Sam Lantinga <slouken@libsdl.org>
parents: 4429
diff changeset
407 /* Make sure the events are current */
363604b42e84 Make sure events are current before flushing them.
Sam Lantinga <slouken@libsdl.org>
parents: 4429
diff changeset
408 SDL_PumpEvents();
363604b42e84 Make sure events are current before flushing them.
Sam Lantinga <slouken@libsdl.org>
parents: 4429
diff changeset
409
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
410 /* Lock the event queue */
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
411 if (SDL_mutexP(SDL_EventQ.lock) == 0) {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
412 int spot = SDL_EventQ.head;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
413 while (spot != SDL_EventQ.tail) {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
414 Uint32 type = SDL_EventQ.event[spot].type;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
415 if (minType <= type && type <= maxType) {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
416 spot = SDL_CutEvent(spot);
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
417 } else {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
418 spot = (spot + 1) % MAXEVENTS;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
419 }
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
420 }
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
421 SDL_mutexV(SDL_EventQ.lock);
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
422 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
425 /* 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
426 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
427 SDL_PumpEvents(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
428 {
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
429 if (!SDL_EventThread) {
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
430 SDL_VideoDevice *_this = SDL_GetVideoDevice();
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431
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
432 /* Get events from the video subsystem */
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
433 if (_this) {
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 _this->PumpEvents(_this);
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
435 }
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
436 #if !SDL_JOYSTICK_DISABLED
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
437 /* Check for joystick state change */
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
438 if (SDL_ShouldPollJoystick()) {
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
439 SDL_JoystickUpdate();
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 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
441 #endif
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
442 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
443 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 /* Public functions */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446
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
447 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
448 SDL_PollEvent(SDL_Event * event)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
449 {
3072
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
450 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
451 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452
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
453 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
454 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
455 {
3072
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
456 return SDL_WaitEventTimeout(event, -1);
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
457 }
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
458
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
459 int
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
460 SDL_WaitEventTimeout(SDL_Event * event, int timeout)
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
461 {
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
462 Uint32 expiration = 0;
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
463
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
464 if (timeout > 0)
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
465 expiration = SDL_GetTicks() + timeout;
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
466
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
467 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
468 SDL_PumpEvents();
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
469 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
470 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
471 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
472 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
473 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
474 case 0:
3072
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
475 if (timeout == 0) {
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
476 /* Polling and no events, just return */
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
477 return 0;
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
478 }
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
479 if (timeout > 0 && ((int) (SDL_GetTicks() - expiration) >= 0)) {
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
480 /* Timeout expired and no events */
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
481 return 0;
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
482 }
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
483 SDL_Delay(10);
3072
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
484 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
485 }
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
486 }
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 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
490 SDL_PushEvent(SDL_Event * event)
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 (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
493 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
494 }
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
495 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
496 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
497 }
4657
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents: 4642
diff changeset
498
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents: 4642
diff changeset
499 SDL_GestureProcessEvent(event);
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents: 4642
diff changeset
500
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents: 4642
diff changeset
501
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
502 return 1;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
503 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504
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
505 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
506 SDL_SetEventFilter(SDL_EventFilter filter, void *userdata)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
507 {
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
508 SDL_Event bitbucket;
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
509
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
510 /* Set filter and discard pending events */
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
511 SDL_EventOK = 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
512 SDL_EventOKParam = 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
513 while (SDL_PollEvent(&bitbucket) > 0);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515
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
516 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
517 SDL_GetEventFilter(SDL_EventFilter * filter, void **userdata)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 {
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
519 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
520 *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
521 }
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
522 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
523 *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
524 }
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
525 return SDL_EventOK ? SDL_TRUE : SDL_FALSE;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
526 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
527
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
528 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
529 SDL_FilterEvents(SDL_EventFilter filter, void *userdata)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 {
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
531 if (SDL_mutexP(SDL_EventQ.lock) == 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
532 int spot;
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
533
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
534 spot = SDL_EventQ.head;
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
535 while (spot != SDL_EventQ.tail) {
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
536 if (filter(userdata, &SDL_EventQ.event[spot])) {
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
537 spot = (spot + 1) % MAXEVENTS;
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
538 } else {
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
539 spot = SDL_CutEvent(spot);
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
540 }
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
541 }
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
542 }
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
543 SDL_mutexV(SDL_EventQ.lock);
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
544 }
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
545
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546 Uint8
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547 SDL_EventState(Uint32 type, int state)
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548 {
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549 Uint8 current_state;
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550 Uint8 hi = ((type >> 8) & 0xff);
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551 Uint8 lo = (type & 0xff);
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552
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553 if (SDL_disabled_events[hi] &&
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554 (SDL_disabled_events[hi]->bits[lo/32] & (1 << (lo&31)))) {
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555 current_state = SDL_DISABLE;
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556 } else {
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557 current_state = SDL_ENABLE;
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558 }
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559
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560 if (state != current_state)
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561 {
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562 switch (state) {
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563 case SDL_DISABLE:
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564 /* Disable this event type and discard pending events */
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565 if (!SDL_disabled_events[hi]) {
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566 SDL_disabled_events[hi] = (SDL_DisabledEventBlock*) SDL_calloc(1, sizeof(SDL_DisabledEventBlock));
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567 if (!SDL_disabled_events[hi]) {
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568 /* Out of memory, nothing we can do... */
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569 break;
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570 }
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571 }
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572 SDL_disabled_events[hi]->bits[lo/32] |= (1 << (lo&31));
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573 SDL_FlushEvent(type);
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574 break;
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575 case SDL_ENABLE:
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576 SDL_disabled_events[hi]->bits[lo/32] &= ~(1 << (lo&31));
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577 break;
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578 default:
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579 /* Querying state... */
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580 break;
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581 }
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582 }
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583
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584 return current_state;
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585 }
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586
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587 Uint32
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588 SDL_RegisterEvents(int numevents)
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589 {
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590 Uint32 event_base;
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591
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592 if (SDL_userevents+numevents <= SDL_LASTEVENT) {
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593 event_base = SDL_userevents;
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594 SDL_userevents += numevents;
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595 } else {
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596 event_base = (Uint32)-1;
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597 }
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598 return event_base;
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599 }
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diff changeset
600
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diff changeset
601 /* This is a generic event handler.
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602 */
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603 int
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604 SDL_SendSysWMEvent(SDL_SysWMmsg * message)
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diff changeset
605 {
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606 int posted;
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607
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608 posted = 0;
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609 if (SDL_GetEventState(SDL_SYSWMEVENT) == SDL_ENABLE) {
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c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
610 SDL_Event event;
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diff changeset
611 SDL_memset(&event, 0, sizeof(event));
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diff changeset
612 event.type = SDL_SYSWMEVENT;
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diff changeset
613 event.syswm.msg = message;
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614 posted = (SDL_PushEvent(&event) > 0);
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615 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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616 /* Update internal event state */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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617 return (posted);
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618 }
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619
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620 /* vi: set ts=4 sw=4 expandtab: */