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annotate src/events/SDL_events.c @ 5182:f652a24a2e99

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author Sam Lantinga <slouken@libsdl.org>
date Fri, 04 Feb 2011 23:31:56 -0800
parents fb424691cfc7
children b530ef003506
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_events_c.h"
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31 #include "../timer/SDL_timer_c.h"
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32 #if !SDL_JOYSTICK_DISABLED
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33 #include "../joystick/SDL_joystick_c.h"
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34 #endif
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35 #include "../video/SDL_sysvideo.h"
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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 SDL_EventWatcher {
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42 SDL_EventFilter callback;
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43 void *userdata;
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44 struct SDL_EventWatcher *next;
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45 } SDL_EventWatcher;
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46
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47 static SDL_EventWatcher *SDL_event_watchers = NULL;
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48
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49 typedef struct {
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50 Uint32 bits[8];
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51 } SDL_DisabledEventBlock;
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52
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53 static SDL_DisabledEventBlock *SDL_disabled_events[256];
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54 static Uint32 SDL_userevents = SDL_USEREVENT;
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55
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56 /* Private data -- event queue */
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57 #define MAXEVENTS 128
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58 static struct
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59 {
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60 SDL_mutex *lock;
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61 int active;
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62 int head;
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63 int tail;
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64 SDL_Event event[MAXEVENTS];
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65 int wmmsg_next;
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66 struct SDL_SysWMmsg wmmsg[MAXEVENTS];
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67 } SDL_EventQ;
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68
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69
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70 static __inline__ SDL_bool
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71 SDL_ShouldPollJoystick()
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72 {
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73 #if !SDL_JOYSTICK_DISABLED
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74 if (SDL_numjoysticks &&
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75 (!SDL_disabled_events[SDL_JOYAXISMOTION >> 8] ||
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76 SDL_JoystickEventState(SDL_QUERY))) {
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77 return SDL_TRUE;
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78 }
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79 #endif
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80 return SDL_FALSE;
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81 }
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82
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83 /* Public functions */
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84
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85 void
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86 SDL_StopEventLoop(void)
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87 {
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88 int i;
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89
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90 if (SDL_EventQ.lock) {
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91 SDL_DestroyMutex(SDL_EventQ.lock);
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92 SDL_EventQ.lock = NULL;
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93 }
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94
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95 /* Clean out EventQ */
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96 SDL_EventQ.head = 0;
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97 SDL_EventQ.tail = 0;
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98 SDL_EventQ.wmmsg_next = 0;
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99
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100 /* Clear disabled event state */
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101 for (i = 0; i < SDL_arraysize(SDL_disabled_events); ++i) {
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102 if (SDL_disabled_events[i]) {
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103 SDL_free(SDL_disabled_events[i]);
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104 SDL_disabled_events[i] = NULL;
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105 }
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106 }
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107
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108 while (SDL_event_watchers) {
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109 SDL_EventWatcher *tmp = SDL_event_watchers;
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110 SDL_event_watchers = tmp->next;
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111 SDL_free(tmp);
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112 }
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113 }
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114
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115 /* This function (and associated calls) may be called more than once */
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116 int
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117 SDL_StartEventLoop(void)
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118 {
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119 /* Clean out the event queue */
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120 SDL_EventQ.lock = NULL;
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121 SDL_StopEventLoop();
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122
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123 /* No filter to start with, process most event types */
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124 SDL_EventOK = NULL;
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125 SDL_EventState(SDL_SYSWMEVENT, SDL_DISABLE);
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126
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127 /* Create the lock and set ourselves active */
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128 #if !SDL_THREADS_DISABLED
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129 SDL_EventQ.lock = SDL_CreateMutex();
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130 if (SDL_EventQ.lock == NULL) {
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131 return (-1);
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132 }
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133 #endif /* !SDL_THREADS_DISABLED */
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134 SDL_EventQ.active = 1;
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135
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136 return (0);
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137 }
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138
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139
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140 /* Add an event to the event queue -- called with the queue locked */
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141 static int
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142 SDL_AddEvent(SDL_Event * event)
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143 {
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144 int tail, added;
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145
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146 tail = (SDL_EventQ.tail + 1) % MAXEVENTS;
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147 if (tail == SDL_EventQ.head) {
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148 /* Overflow, drop event */
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149 added = 0;
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150 } else {
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151 SDL_EventQ.event[SDL_EventQ.tail] = *event;
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152 if (event->type == SDL_SYSWMEVENT) {
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153 /* Note that it's possible to lose an event */
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154 int next = SDL_EventQ.wmmsg_next;
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155 SDL_EventQ.wmmsg[next] = *event->syswm.msg;
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156 SDL_EventQ.event[SDL_EventQ.tail].syswm.msg =
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157 &SDL_EventQ.wmmsg[next];
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158 SDL_EventQ.wmmsg_next = (next + 1) % MAXEVENTS;
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159 }
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160 SDL_EventQ.tail = tail;
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161 added = 1;
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162 }
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163 return (added);
0
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164 }
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165
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166 /* Cut an event, and return the next valid spot, or the tail */
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167 /* -- called with the queue locked */
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168 static int
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169 SDL_CutEvent(int spot)
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170 {
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171 if (spot == SDL_EventQ.head) {
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172 SDL_EventQ.head = (SDL_EventQ.head + 1) % MAXEVENTS;
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173 return (SDL_EventQ.head);
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174 } else if ((spot + 1) % MAXEVENTS == SDL_EventQ.tail) {
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175 SDL_EventQ.tail = spot;
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176 return (SDL_EventQ.tail);
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177 } else
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178 /* We cut the middle -- shift everything over */
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179 {
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180 int here, next;
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181
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182 /* This can probably be optimized with SDL_memcpy() -- careful! */
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183 if (--SDL_EventQ.tail < 0) {
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184 SDL_EventQ.tail = MAXEVENTS - 1;
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185 }
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186 for (here = spot; here != SDL_EventQ.tail; here = next) {
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187 next = (here + 1) % MAXEVENTS;
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188 SDL_EventQ.event[here] = SDL_EventQ.event[next];
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189 }
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190 return (spot);
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191 }
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192 /* NOTREACHED */
0
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193 }
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194
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195 /* Lock the event queue, take a peep at it, and unlock it */
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196 int
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197 SDL_PeepEvents(SDL_Event * events, int numevents, SDL_eventaction action,
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198 Uint32 minType, Uint32 maxType)
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199 {
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200 int i, used;
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201
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202 /* Don't look after we've quit */
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203 if (!SDL_EventQ.active) {
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204 return (-1);
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205 }
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206 /* Lock the event queue */
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207 used = 0;
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208 if (SDL_mutexP(SDL_EventQ.lock) == 0) {
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209 if (action == SDL_ADDEVENT) {
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210 for (i = 0; i < numevents; ++i) {
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211 used += SDL_AddEvent(&events[i]);
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212 }
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213 } else {
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214 SDL_Event tmpevent;
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215 int spot;
0
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216
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217 /* If 'events' is NULL, just see if they exist */
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218 if (events == NULL) {
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219 action = SDL_PEEKEVENT;
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220 numevents = 1;
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221 events = &tmpevent;
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222 }
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223 spot = SDL_EventQ.head;
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224 while ((used < numevents) && (spot != SDL_EventQ.tail)) {
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225 Uint32 type = SDL_EventQ.event[spot].type;
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226 if (minType <= type && type <= maxType) {
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227 events[used++] = SDL_EventQ.event[spot];
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228 if (action == SDL_GETEVENT) {
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229 spot = SDL_CutEvent(spot);
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230 } else {
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231 spot = (spot + 1) % MAXEVENTS;
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232 }
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233 } else {
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234 spot = (spot + 1) % MAXEVENTS;
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235 }
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236 }
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237 }
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238 SDL_mutexV(SDL_EventQ.lock);
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239 } else {
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240 SDL_SetError("Couldn't lock event queue");
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241 used = -1;
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242 }
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243 return (used);
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244 }
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245
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246 SDL_bool
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247 SDL_HasEvent(Uint32 type)
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248 {
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249 return (SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, type, type) > 0);
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250 }
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251
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252 SDL_bool
faa9fc8e7f67 General improvements for user custom event registration
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253 SDL_HasEvents(Uint32 minType, Uint32 maxType)
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254 {
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255 return (SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, minType, maxType) > 0);
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256 }
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257
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diff changeset
258 void
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259 SDL_FlushEvent(Uint32 type)
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260 {
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261 SDL_FlushEvents(type, type);
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262 }
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263
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diff changeset
264 void
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265 SDL_FlushEvents(Uint32 minType, Uint32 maxType)
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266 {
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267 /* Don't look after we've quit */
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268 if (!SDL_EventQ.active) {
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269 return;
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270 }
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271
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272 /* Make sure the events are current */
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diff changeset
273 SDL_PumpEvents();
363604b42e84 Make sure events are current before flushing them.
Sam Lantinga <slouken@libsdl.org>
parents: 4429
diff changeset
274
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diff changeset
275 /* Lock the event queue */
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
276 if (SDL_mutexP(SDL_EventQ.lock) == 0) {
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
277 int spot = SDL_EventQ.head;
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
278 while (spot != SDL_EventQ.tail) {
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
279 Uint32 type = SDL_EventQ.event[spot].type;
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
280 if (minType <= type && type <= maxType) {
faa9fc8e7f67 General improvements for user custom event registration
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diff changeset
281 spot = SDL_CutEvent(spot);
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
282 } else {
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
283 spot = (spot + 1) % MAXEVENTS;
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
284 }
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
285 }
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
286 SDL_mutexV(SDL_EventQ.lock);
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
287 }
0
74212992fb08 Initial revision
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parents:
diff changeset
288 }
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diff changeset
289
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parents:
diff changeset
290 /* Run the system dependent event loops */
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diff changeset
291 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
292 SDL_PumpEvents(void)
0
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diff changeset
293 {
5125
dc0dfdd58f27 Removed completely non-portable event thread hack.
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diff changeset
294 SDL_VideoDevice *_this = SDL_GetVideoDevice();
0
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295
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parents: 5113
diff changeset
296 /* Get events from the video subsystem */
dc0dfdd58f27 Removed completely non-portable event thread hack.
Sam Lantinga <slouken@libsdl.org>
parents: 5113
diff changeset
297 if (_this) {
dc0dfdd58f27 Removed completely non-portable event thread hack.
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parents: 5113
diff changeset
298 _this->PumpEvents(_this);
dc0dfdd58f27 Removed completely non-portable event thread hack.
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parents: 5113
diff changeset
299 }
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
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parents: 1358
diff changeset
300 #if !SDL_JOYSTICK_DISABLED
5125
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diff changeset
301 /* Check for joystick state change */
dc0dfdd58f27 Removed completely non-portable event thread hack.
Sam Lantinga <slouken@libsdl.org>
parents: 5113
diff changeset
302 if (SDL_ShouldPollJoystick()) {
dc0dfdd58f27 Removed completely non-portable event thread hack.
Sam Lantinga <slouken@libsdl.org>
parents: 5113
diff changeset
303 SDL_JoystickUpdate();
dc0dfdd58f27 Removed completely non-portable event thread hack.
Sam Lantinga <slouken@libsdl.org>
parents: 5113
diff changeset
304 }
0
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parents:
diff changeset
305 #endif
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parents:
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306 }
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parents:
diff changeset
307
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parents:
diff changeset
308 /* Public functions */
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309
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diff changeset
310 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
311 SDL_PollEvent(SDL_Event * event)
0
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parents:
diff changeset
312 {
3072
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diff changeset
313 return SDL_WaitEventTimeout(event, 0);
1895
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parents: 1769
diff changeset
314 }
0
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parents:
diff changeset
315
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diff changeset
316 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
317 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
318 {
3072
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diff changeset
319 return SDL_WaitEventTimeout(event, -1);
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
320 }
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
321
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
322 int
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
323 SDL_WaitEventTimeout(SDL_Event * event, int timeout)
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
324 {
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
325 Uint32 expiration = 0;
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
326
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
327 if (timeout > 0)
9da8f57ab92c Fixed bug #684
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parents: 2984
diff changeset
328 expiration = SDL_GetTicks() + timeout;
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
329
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
330 for (;;) {
1895
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
331 SDL_PumpEvents();
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
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diff changeset
332 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
333 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
334 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
335 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
336 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
337 case 0:
3072
9da8f57ab92c Fixed bug #684
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parents: 2984
diff changeset
338 if (timeout == 0) {
9da8f57ab92c Fixed bug #684
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parents: 2984
diff changeset
339 /* Polling and no events, just return */
9da8f57ab92c Fixed bug #684
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parents: 2984
diff changeset
340 return 0;
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
341 }
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
342 if (timeout > 0 && ((int) (SDL_GetTicks() - expiration) >= 0)) {
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
343 /* Timeout expired and no events */
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
344 return 0;
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
345 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
346 SDL_Delay(10);
3072
9da8f57ab92c Fixed bug #684
Sam Lantinga <slouken@libsdl.org>
parents: 2984
diff changeset
347 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
348 }
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
349 }
0
74212992fb08 Initial revision
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parents:
diff changeset
350 }
74212992fb08 Initial revision
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parents:
diff changeset
351
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
352 int
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
353 SDL_PushEvent(SDL_Event * event)
0
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parents:
diff changeset
354 {
5149
3052772b59db Added functions to watch events as they go through the event queue.
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parents: 5125
diff changeset
355 SDL_EventWatcher *curr;
3052772b59db Added functions to watch events as they go through the event queue.
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parents: 5125
diff changeset
356
1895
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
357 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
358 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
359 }
5149
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
360
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
361 for (curr = SDL_event_watchers; curr; curr = curr->next) {
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
362 curr->callback(curr->userdata, event);
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
363 }
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
364
4429
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diff changeset
365 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
366 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
367 }
4657
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents: 4642
diff changeset
368
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents: 4642
diff changeset
369 SDL_GestureProcessEvent(event);
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents: 4642
diff changeset
370
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents: 4642
diff changeset
371
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
372 return 1;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
373 }
74212992fb08 Initial revision
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parents:
diff changeset
374
1895
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
375 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
376 SDL_SetEventFilter(SDL_EventFilter filter, void *userdata)
0
74212992fb08 Initial revision
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parents:
diff changeset
377 {
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
378 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
379
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
380 /* 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
381 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
382 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
383 while (SDL_PollEvent(&bitbucket) > 0);
0
74212992fb08 Initial revision
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parents:
diff changeset
384 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385
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
386 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
387 SDL_GetEventFilter(SDL_EventFilter * filter, void **userdata)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
388 {
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
389 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
390 *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
391 }
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
392 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
393 *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
394 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
395 return SDL_EventOK ? SDL_TRUE : SDL_FALSE;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
396 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
397
5149
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
398 /* FIXME: This is not thread-safe yet */
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
399 void
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
400 SDL_AddEventWatch(SDL_EventFilter filter, void *userdata)
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
401 {
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
402 SDL_EventWatcher *watcher;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
403
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
404 watcher = (SDL_EventWatcher *)SDL_malloc(sizeof(*watcher));
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
405 if (!watcher) {
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
406 /* Uh oh... */
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
407 return;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
408 }
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
409 watcher->callback = filter;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
410 watcher->userdata = userdata;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
411 watcher->next = SDL_event_watchers;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
412 SDL_event_watchers = watcher;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
413 }
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
414
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
415 /* FIXME: This is not thread-safe yet */
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
416 void
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
417 SDL_DelEventWatch(SDL_EventFilter filter, void *userdata)
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
418 {
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
419 SDL_EventWatcher *prev = NULL;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
420 SDL_EventWatcher *curr;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
421
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
422 for (curr = SDL_event_watchers; curr; prev = curr, curr = curr->next) {
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
423 if (curr->callback == filter && curr->userdata == userdata) {
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
424 if (prev) {
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
425 prev->next = curr->next;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
426 } else {
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
427 SDL_event_watchers = curr->next;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
428 }
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
429 SDL_free(curr);
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
430 break;
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
431 }
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
432 }
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
433 }
3052772b59db Added functions to watch events as they go through the event queue.
Sam Lantinga <slouken@libsdl.org>
parents: 5125
diff changeset
434
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
435 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
436 SDL_FilterEvents(SDL_EventFilter filter, void *userdata)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 {
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
438 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
439 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
440
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
441 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
442 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
443 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
444 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
445 } 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
446 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
447 }
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 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
449 }
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
450 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
451 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
452
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 Uint8
4429
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
454 SDL_EventState(Uint32 type, int state)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
455 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
456 Uint8 current_state;
4429
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
457 Uint8 hi = ((type >> 8) & 0xff);
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
458 Uint8 lo = (type & 0xff);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459
4429
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
460 if (SDL_disabled_events[hi] &&
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
461 (SDL_disabled_events[hi]->bits[lo/32] & (1 << (lo&31)))) {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
462 current_state = SDL_DISABLE;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
463 } else {
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
464 current_state = SDL_ENABLE;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
465 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466
4429
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
467 if (state != current_state)
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
468 {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
469 switch (state) {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
470 case SDL_DISABLE:
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
471 /* Disable this event type and discard pending events */
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
472 if (!SDL_disabled_events[hi]) {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
473 SDL_disabled_events[hi] = (SDL_DisabledEventBlock*) SDL_calloc(1, sizeof(SDL_DisabledEventBlock));
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
474 if (!SDL_disabled_events[hi]) {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
475 /* Out of memory, nothing we can do... */
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
476 break;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
477 }
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
478 }
faa9fc8e7f67 General improvements for user custom event registration
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parents: 3697
diff changeset
479 SDL_disabled_events[hi]->bits[lo/32] |= (1 << (lo&31));
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
480 SDL_FlushEvent(type);
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
481 break;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
482 case SDL_ENABLE:
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
483 SDL_disabled_events[hi]->bits[lo/32] &= ~(1 << (lo&31));
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
484 break;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
485 default:
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
486 /* Querying state... */
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
487 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
488 }
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 }
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
490
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
491 return current_state;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
492 }
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
493
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
494 Uint32
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
495 SDL_RegisterEvents(int numevents)
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
496 {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
497 Uint32 event_base;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
498
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
499 if (SDL_userevents+numevents <= SDL_LASTEVENT) {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
500 event_base = SDL_userevents;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
501 SDL_userevents += numevents;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
502 } else {
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
503 event_base = (Uint32)-1;
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
504 }
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
505 return event_base;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
506 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
507
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
508 /* This is a generic event handler.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
509 */
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
510 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
511 SDL_SendSysWMEvent(SDL_SysWMmsg * message)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
512 {
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
513 int posted;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514
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
515 posted = 0;
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
516 if (SDL_GetEventState(SDL_SYSWMEVENT) == SDL_ENABLE) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
517 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
518 SDL_memset(&event, 0, sizeof(event));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
519 event.type = SDL_SYSWMEVENT;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
520 event.syswm.msg = message;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
521 posted = (SDL_PushEvent(&event) > 0);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
522 }
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 /* Update internal event state */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
524 return (posted);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525 }
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
526
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
527 /* vi: set ts=4 sw=4 expandtab: */