1 /*
2 * file event.h - xblast event queue
3 *
4 * $Id: event.c,v 1.10 2006/02/09 21:21:23 fzago Exp $
5 *
6 * Program XBLAST
7 * (C) by Oliver Vogel (e-mail: m.vogel@ndh.net)
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published
11 * by the Free Software Foundation; either version 2; or (at your option)
12 * any later version
13 *
14 * This program is distributed in the hope that it will be entertaining,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILTY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
17 * Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.
21 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24 #include "xblast.h"
25
26 /*
27 * local macros
28 */
29 #define EVENT_QUEUE_SIZE 128
30
31 /*
32 * local types
33 */
34 typedef struct
35 {
36 XBEventCode code;
37 XBEventData data;
38 } XBEvent;
39
40 /*
41 * local variables
42 */
43 static int eventPut = 0;
44 static int eventGet = 0;
45 static XBEvent eventQueue[EVENT_QUEUE_SIZE];
46
47 #ifdef DEBUG_XBEVENT
48 /*
49 *
50 */
51 static const char *
EventName(XBEventCode eCode)52 EventName (XBEventCode eCode)
53 {
54 switch (eCode) {
55 case XBE_NONE:
56 return "XBE_NONE";
57 case XBE_POLL:
58 return "XBE_POLL";
59 case XBE_TIMER:
60 return "XBE_TIMER";
61 case XBE_SOCKET_READ:
62 return "XBE_SOCKET_READ";
63 case XBE_SOCKET_WRITE:
64 return "XBE_SOCKET_WRITE";
65 case XBE_MENU:
66 return "XBE_MENU";
67 case XBE_ASCII:
68 return "XBE_ASCII";
69 case XBE_CTRL:
70 return "XBE_CTRL";
71 case XBE_CHAT:
72 return "XBE_CHAT";
73 case XBE_KEYSYM:
74 return "XBE_KEYSYM";
75 case XBE_XBLAST:
76 return "XBE_XBLAST";
77 case XBE_KEYB_1:
78 return "XBE_KEYB_1";
79 case XBE_KEYB_2:
80 return "XBE_KEYB_2";
81 case XBE_JOYST_1:
82 return "XBE_JOYST_1";
83 case XBE_JOYST_2:
84 return "XBE_JOYST_2";
85 case XBE_MOUSE_1:
86 return "XBE_MOUSE_1";
87 case XBE_MOUSE_2:
88 return "XBE_MOUSE_2";
89 case XBE_MOUSE_3:
90 return "XBE_MOUSE_3";
91 case XBE_MOUSE_MOVE:
92 return "XBE_MOUSE_MOVE";
93 case XBE_SERVER:
94 return "XBE_SERVER";
95 default:
96 return "XBE_?";
97 }
98 } /* EventName */
99 #endif
100
101 /*
102 * Get next event from queue
103 */
104 XBEventCode
NextEvent(XBEventData * data)105 NextEvent (XBEventData * data)
106 {
107 XBEventCode ecode;
108 if (eventPut == eventGet) {
109 ecode = XBE_NONE;
110 }
111 else {
112 ecode = eventQueue[eventGet].code;
113 *data = eventQueue[eventGet].data;
114 eventGet++;
115 if (eventGet >= EVENT_QUEUE_SIZE) {
116 eventGet = 0;
117 }
118 }
119 #ifdef DEBUG_XBEVENT
120 if (ecode != XBE_NONE && ecode != XBE_TIMER)
121 Dbg_Out ("next event %s\n", EventName (ecode), data);
122 #endif
123 return ecode;
124 } /* NextEvent */
125
126 /*
127 * Put event in queue
128 */
129 static XBBool
QueueEvent(XBEventCode ecode,XBEventData data)130 QueueEvent (XBEventCode ecode, XBEventData data)
131 {
132 int newPut;
133
134 newPut = eventPut + 1;
135 if (newPut >= EVENT_QUEUE_SIZE) {
136 newPut = 0;
137 }
138 if (newPut == eventGet) {
139 /* queue overflow abort */
140 return XBFalse;
141 }
142 eventQueue[eventPut].code = ecode;
143 eventQueue[eventPut].data = data;
144 eventPut = newPut;
145 /* that's all */
146 #ifdef DEBUG_XBEVENT
147 if (ecode != XBE_NONE && ecode != XBE_TIMER)
148 Dbg_Out ("queue event %s-%c\n", EventName (ecode), data);
149 #endif
150 return XBTrue;
151 } /* QueueEvent */
152
153 /*
154 * Queue Event with no argument
155 */
156 XBBool
QueueEventVoid(XBEventCode code)157 QueueEventVoid (XBEventCode code)
158 {
159 XBEventData data;
160 data.value = 0;
161 return QueueEvent (code, data);
162 } /* QueueEventVoid */
163
164 /*
165 * Queue Event with integer argument
166 */
167 XBBool
QueueEventValue(XBEventCode code,int value)168 QueueEventValue (XBEventCode code, int value)
169 {
170 XBEventData data;
171 data.value = value;
172 #ifdef DEBUG_XBEVENT
173 if (code != XBE_NONE && code != XBE_TIMER)
174 Dbg_Out ("queue event value %s %c,\n", EventName (code), data.value);
175 #endif
176 return QueueEvent (code, data);
177 } /* QueueEventValue */
178
179 /*
180 * Queue Event with integer argument
181 */
182 XBBool
QueueEventPointer(XBEventCode code,void * ptr)183 QueueEventPointer (XBEventCode code, void *ptr)
184 {
185 XBEventData data;
186 data.ptr = ptr;
187 #ifdef DEBUG_XBEVENT
188 if (code != XBE_NONE && code != XBE_TIMER)
189 Dbg_Out ("queue event pointer %s %c,\n", EventName (code), data.value);
190 #endif
191 return QueueEvent (code, data);
192 } /* QueueEventPointer */
193
194 /*
195 * Queue Event with integer argument
196 */
197 XBBool
QueueEventPos(XBEventCode code,short x,short y)198 QueueEventPos (XBEventCode code, short x, short y)
199 {
200 XBEventData data;
201 data.pos.x = x;
202 data.pos.y = y;
203 return QueueEvent (code, data);
204 } /* QueueEventValue */
205
206 /*
207 * Queue Event with integer argument
208 */
209 XBBool
QueueEventAtom(XBEventCode code,XBAtom atom)210 QueueEventAtom (XBEventCode code, XBAtom atom)
211 {
212 XBEventData data;
213 data.atom = atom;
214 #ifdef DEBUG_XBEVENT
215 if (code != XBE_NONE && code != XBE_TIMER)
216 Dbg_Out ("queue event atom %s %c,\n", EventName (code), data.value);
217 #endif
218 return QueueEvent (code, data);
219 } /* QueueEventValue */
220