Mercurial > sdl-ios-xcode
annotate docs/html/sdlkeysym.html @ 983:7f08bd66f1ca
Date: Fri, 19 Nov 2004 06:23:53 -0800 (PST)
From: Eric Wing
Subject: OS X Mouse inversion problem fix (again)
Here's yet another patch for the OS X mouse inversion
problem. This should fix the problem once and for all.
I know I've said this before, but *This time for
sure!* :)
If you recall, my last patch broke the non-OpenGL
windowed code and caused the inversion to occur there
instead. Max submitted a patch that partially reverted
the changes back which included the os version hack
which is currently the most recent CVS.
Aaron Sullivan identified and reported to the mailing
list the other day, that the last partial regression
of the code broke OS X 10.2. Looking over the results,
I'm thinking that I was slightly more successful than
I thought at unifying the code. I think I was trying
to unify the code base for OpenGL and non-OpenGL
windowed modes for all versions of the OS. It looks
like I failed at at unifying the OpenGL and non-OpenGL
code, but I did succeed at unifying the OS versions.
Thus, we no longer need the hack for the OS version
checks. The partial regression still included an OS
check which is what broke things for < 10.3.
Attached is the patch for SDL_QuartzWM.m. It basically
is a half-line change that removes one of the two
checks that decides if the mouse coordinates need to
be inverted, i.e:
if (system_version >= 0x1030 &&
(SDL_VideoSurface->flags & SDL_OPENGL) )
becomes this:
if(SDL_VideoSurface->flags & SDL_OPENGL)
With Aaron's outstanding help, we have collectively
tested:
windowed OpenGL
windowed non-OpenGL
fullscreen OpenGL
fullscreen non-OpenGL
under OS X 10.2 (Jaguar), 10.3 (Panther), and 10.4
(Tiger).
We don't have access to 10.0 or 10.1, but since the
original problem didn't materialize until 10.3, I'm
hopeful that testing 10.2 is sufficient. And now that
the code is uniform, I'm also hoping we'll be safe
moving forward to deal with future revisions of the OS
with this issue.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 21 Nov 2004 00:57:47 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_keysym</TITLE | |
5 ><META | |
6 NAME="GENERATOR" | |
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ |
0 | 8 "><LINK |
9 REL="HOME" | |
10 TITLE="SDL Library Documentation" | |
11 HREF="index.html"><LINK | |
12 REL="UP" | |
13 TITLE="SDL Event Structures." | |
14 HREF="eventstructures.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_QuitEvent" | |
17 HREF="sdlquitevent.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDLKey" | |
20 HREF="sdlkey.html"></HEAD | |
21 ><BODY | |
22 CLASS="REFENTRY" | |
23 BGCOLOR="#FFF8DC" | |
24 TEXT="#000000" | |
25 LINK="#0000ee" | |
26 VLINK="#551a8b" | |
27 ALINK="#ff0000" | |
28 ><DIV | |
29 CLASS="NAVHEADER" | |
30 ><TABLE | |
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31 SUMMARY="Header navigation table" |
0 | 32 WIDTH="100%" |
33 BORDER="0" | |
34 CELLPADDING="0" | |
35 CELLSPACING="0" | |
36 ><TR | |
37 ><TH | |
38 COLSPAN="3" | |
39 ALIGN="center" | |
40 >SDL Library Documentation</TH | |
41 ></TR | |
42 ><TR | |
43 ><TD | |
44 WIDTH="10%" | |
45 ALIGN="left" | |
46 VALIGN="bottom" | |
47 ><A | |
48 HREF="sdlquitevent.html" | |
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49 ACCESSKEY="P" |
0 | 50 >Prev</A |
51 ></TD | |
52 ><TD | |
53 WIDTH="80%" | |
54 ALIGN="center" | |
55 VALIGN="bottom" | |
56 ></TD | |
57 ><TD | |
58 WIDTH="10%" | |
59 ALIGN="right" | |
60 VALIGN="bottom" | |
61 ><A | |
62 HREF="sdlkey.html" | |
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63 ACCESSKEY="N" |
0 | 64 >Next</A |
65 ></TD | |
66 ></TR | |
67 ></TABLE | |
68 ><HR | |
69 ALIGN="LEFT" | |
70 WIDTH="100%"></DIV | |
71 ><H1 | |
72 ><A | |
73 NAME="SDLKEYSYM" | |
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74 ></A |
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75 >SDL_keysym</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN4659" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_keysym -- Keysym structure</DIV | |
84 ><DIV | |
85 CLASS="REFSECT1" | |
86 ><A | |
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87 NAME="AEN4662" |
0 | 88 ></A |
89 ><H2 | |
90 >Structure Definition</H2 | |
91 ><PRE | |
92 CLASS="PROGRAMLISTING" | |
93 >typedef struct{ | |
94 Uint8 scancode; | |
95 SDLKey sym; | |
96 SDLMod mod; | |
97 Uint16 unicode; | |
98 } SDL_keysym;</PRE | |
99 ></DIV | |
100 ><DIV | |
101 CLASS="REFSECT1" | |
102 ><A | |
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103 NAME="AEN4665" |
0 | 104 ></A |
105 ><H2 | |
106 >Structure Data</H2 | |
107 ><DIV | |
108 CLASS="INFORMALTABLE" | |
109 ><A | |
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110 NAME="AEN4667" |
0 | 111 ></A |
112 ><P | |
113 ></P | |
114 ><TABLE | |
115 BORDER="0" | |
116 CLASS="CALSTABLE" | |
117 ><TBODY | |
118 ><TR | |
119 ><TD | |
120 ALIGN="LEFT" | |
121 VALIGN="TOP" | |
122 ><TT | |
123 CLASS="STRUCTFIELD" | |
124 ><I | |
125 >scancode</I | |
126 ></TT | |
127 ></TD | |
128 ><TD | |
129 ALIGN="LEFT" | |
130 VALIGN="TOP" | |
131 >Hardware specific scancode</TD | |
132 ></TR | |
133 ><TR | |
134 ><TD | |
135 ALIGN="LEFT" | |
136 VALIGN="TOP" | |
137 ><TT | |
138 CLASS="STRUCTFIELD" | |
139 ><I | |
140 >sym</I | |
141 ></TT | |
142 ></TD | |
143 ><TD | |
144 ALIGN="LEFT" | |
145 VALIGN="TOP" | |
146 >SDL virtual keysym</TD | |
147 ></TR | |
148 ><TR | |
149 ><TD | |
150 ALIGN="LEFT" | |
151 VALIGN="TOP" | |
152 ><TT | |
153 CLASS="STRUCTFIELD" | |
154 ><I | |
155 >mod</I | |
156 ></TT | |
157 ></TD | |
158 ><TD | |
159 ALIGN="LEFT" | |
160 VALIGN="TOP" | |
161 >Current key modifiers</TD | |
162 ></TR | |
163 ><TR | |
164 ><TD | |
165 ALIGN="LEFT" | |
166 VALIGN="TOP" | |
167 ><TT | |
168 CLASS="STRUCTFIELD" | |
169 ><I | |
170 >unicode</I | |
171 ></TT | |
172 ></TD | |
173 ><TD | |
174 ALIGN="LEFT" | |
175 VALIGN="TOP" | |
176 >Translated character</TD | |
177 ></TR | |
178 ></TBODY | |
179 ></TABLE | |
180 ><P | |
181 ></P | |
182 ></DIV | |
183 ></DIV | |
184 ><DIV | |
185 CLASS="REFSECT1" | |
186 ><A | |
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187 NAME="AEN4686" |
0 | 188 ></A |
189 ><H2 | |
190 >Description</H2 | |
191 ><P | |
192 >The <SPAN | |
193 CLASS="STRUCTNAME" | |
194 >SDL_keysym</SPAN | |
195 > structure is used by reporting key presses and releases since it is a part of the <A | |
196 HREF="sdlkeyboardevent.html" | |
197 ><SPAN | |
198 CLASS="STRUCTNAME" | |
199 >SDL_KeyboardEvent</SPAN | |
200 ></A | |
201 >.</P | |
202 ><P | |
203 >The <TT | |
204 CLASS="STRUCTFIELD" | |
205 ><I | |
206 >scancode</I | |
207 ></TT | |
208 > field should generally be left alone, it is the hardware dependent scancode returned by the keyboard. The <TT | |
209 CLASS="STRUCTFIELD" | |
210 ><I | |
211 >sym</I | |
212 ></TT | |
213 > field is extremely useful. It is the SDL-defined value of the key (see <A | |
214 HREF="sdlkey.html" | |
215 >SDL Key Syms</A | |
216 >. This field is very useful when you are checking for certain key presses, like so: | |
217 <PRE | |
218 CLASS="PROGRAMLISTING" | |
219 >. | |
220 . | |
221 while(SDL_PollEvent(&event)){ | |
222 switch(event.type){ | |
223 case SDL_KEYDOWN: | |
224 if(event.key.keysym.sym==SDLK_LEFT) | |
225 move_left(); | |
226 break; | |
227 . | |
228 . | |
229 . | |
230 } | |
231 } | |
232 . | |
233 .</PRE | |
234 > | |
235 <TT | |
236 CLASS="STRUCTFIELD" | |
237 ><I | |
238 >mod</I | |
239 ></TT | |
240 > stores the current state of the keyboard modifiers as explained in <A | |
241 HREF="sdlgetmodstate.html" | |
242 ><TT | |
243 CLASS="FUNCTION" | |
244 >SDL_GetModState</TT | |
245 ></A | |
246 >. The <TT | |
247 CLASS="STRUCTFIELD" | |
248 ><I | |
249 >unicode</I | |
250 ></TT | |
251 > is only used when UNICODE translation is enabled with <A | |
252 HREF="sdlenableunicode.html" | |
253 ><TT | |
254 CLASS="FUNCTION" | |
255 >SDL_EnableUNICODE</TT | |
256 ></A | |
257 >. If <TT | |
258 CLASS="STRUCTFIELD" | |
259 ><I | |
260 >unicode</I | |
261 ></TT | |
262 > is non-zero then this a the UNICODE character corresponding to the keypress. If the high 9 bits of the character are 0, then this maps to the equivalent ASCII character: | |
263 <PRE | |
264 CLASS="PROGRAMLISTING" | |
265 >char ch; | |
266 if ( (keysym.unicode & 0xFF80) == 0 ) { | |
267 ch = keysym.unicode & 0x7F; | |
268 } | |
269 else { | |
270 printf("An International Character.\n"); | |
271 }</PRE | |
272 > | |
273 UNICODE translation does have a slight overhead so don't enable it unless its needed.</P | |
274 ></DIV | |
275 ><DIV | |
276 CLASS="REFSECT1" | |
277 ><A | |
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278 NAME="AEN4705" |
0 | 279 ></A |
280 ><H2 | |
281 >See Also</H2 | |
282 ><P | |
283 ><A | |
284 HREF="sdlkey.html" | |
285 ><SPAN | |
286 CLASS="STRUCTNAME" | |
287 >SDLKey</SPAN | |
288 ></A | |
289 ></P | |
290 ></DIV | |
291 ><DIV | |
292 CLASS="NAVFOOTER" | |
293 ><HR | |
294 ALIGN="LEFT" | |
295 WIDTH="100%"><TABLE | |
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296 SUMMARY="Footer navigation table" |
0 | 297 WIDTH="100%" |
298 BORDER="0" | |
299 CELLPADDING="0" | |
300 CELLSPACING="0" | |
301 ><TR | |
302 ><TD | |
303 WIDTH="33%" | |
304 ALIGN="left" | |
305 VALIGN="top" | |
306 ><A | |
307 HREF="sdlquitevent.html" | |
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308 ACCESSKEY="P" |
0 | 309 >Prev</A |
310 ></TD | |
311 ><TD | |
312 WIDTH="34%" | |
313 ALIGN="center" | |
314 VALIGN="top" | |
315 ><A | |
316 HREF="index.html" | |
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317 ACCESSKEY="H" |
0 | 318 >Home</A |
319 ></TD | |
320 ><TD | |
321 WIDTH="33%" | |
322 ALIGN="right" | |
323 VALIGN="top" | |
324 ><A | |
325 HREF="sdlkey.html" | |
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326 ACCESSKEY="N" |
0 | 327 >Next</A |
328 ></TD | |
329 ></TR | |
330 ><TR | |
331 ><TD | |
332 WIDTH="33%" | |
333 ALIGN="left" | |
334 VALIGN="top" | |
335 >SDL_QuitEvent</TD | |
336 ><TD | |
337 WIDTH="34%" | |
338 ALIGN="center" | |
339 VALIGN="top" | |
340 ><A | |
341 HREF="eventstructures.html" | |
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342 ACCESSKEY="U" |
0 | 343 >Up</A |
344 ></TD | |
345 ><TD | |
346 WIDTH="33%" | |
347 ALIGN="right" | |
348 VALIGN="top" | |
349 >SDLKey</TD | |
350 ></TR | |
351 ></TABLE | |
352 ></DIV | |
353 ></BODY | |
354 ></HTML | |
355 > |