Mercurial > sdl-ios-xcode
annotate docs/html/sdlmousebuttonevent.html @ 3880:74e828c64315 SDL-1.2
Fixed bug #292
I might be on crack here.
It looks like SDL_ConvertMono() in src/audio/SDL_audiocvt.c adds the left and
right channels of a stereo stream together, and clamps the new mono channel if
it would overflow.
Shouldn't it be dividing by 2 to average the two sample points instead of
clamping? Otherwise the mono sample point's volume doubles in the conversion.
This would also make the conversion faster, as it replaces two branches per
sample frame with a bitwise shift.
--ryan.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 24 Sep 2006 15:45:37 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_MouseButtonEvent</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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_MouseMotionEvent" | |
| 17 HREF="sdlmousemotionevent.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_JoyAxisEvent" | |
| 20 HREF="sdljoyaxisevent.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 | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="sdlmousemotionevent.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="sdljoyaxisevent.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="SDLMOUSEBUTTONEVENT" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
74 ></A |
|
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
75 >SDL_MouseButtonEvent</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
79 NAME="AEN4144" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_MouseButtonEvent -- Mouse button event structure</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSECT1" | |
| 86 ><A | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
87 NAME="AEN4147" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Structure Definition</H2 | |
| 91 ><PRE | |
| 92 CLASS="PROGRAMLISTING" | |
| 93 >typedef struct{ | |
| 94 Uint8 type; | |
| 95 Uint8 button; | |
| 96 Uint8 state; | |
| 97 Uint16 x, y; | |
| 98 } SDL_MouseButtonEvent;</PRE | |
| 99 ></DIV | |
| 100 ><DIV | |
| 101 CLASS="REFSECT1" | |
| 102 ><A | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
103 NAME="AEN4150" |
| 0 | 104 ></A |
| 105 ><H2 | |
| 106 >Structure Data</H2 | |
| 107 ><DIV | |
| 108 CLASS="INFORMALTABLE" | |
| 109 ><A | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
110 NAME="AEN4152" |
| 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 >type</I | |
| 126 ></TT | |
| 127 ></TD | |
| 128 ><TD | |
| 129 ALIGN="LEFT" | |
| 130 VALIGN="TOP" | |
| 131 ><TT | |
| 132 CLASS="LITERAL" | |
| 133 >SDL_MOUSEBUTTONDOWN</TT | |
| 134 > or <TT | |
| 135 CLASS="LITERAL" | |
| 136 >SDL_MOUSEBUTTONUP</TT | |
| 137 ></TD | |
| 138 ></TR | |
| 139 ><TR | |
| 140 ><TD | |
| 141 ALIGN="LEFT" | |
| 142 VALIGN="TOP" | |
| 143 ><TT | |
| 144 CLASS="STRUCTFIELD" | |
| 145 ><I | |
| 146 >button</I | |
| 147 ></TT | |
| 148 ></TD | |
| 149 ><TD | |
| 150 ALIGN="LEFT" | |
| 151 VALIGN="TOP" | |
| 152 >The mouse button index (SDL_BUTTON_LEFT, SDL_BUTTON_MIDDLE, SDL_BUTTON_RIGHT)</TD | |
| 153 ></TR | |
| 154 ><TR | |
| 155 ><TD | |
| 156 ALIGN="LEFT" | |
| 157 VALIGN="TOP" | |
| 158 ><TT | |
| 159 CLASS="STRUCTFIELD" | |
| 160 ><I | |
| 161 >state</I | |
| 162 ></TT | |
| 163 ></TD | |
| 164 ><TD | |
| 165 ALIGN="LEFT" | |
| 166 VALIGN="TOP" | |
| 167 ><TT | |
| 168 CLASS="LITERAL" | |
| 169 >SDL_PRESSED</TT | |
| 170 > or <TT | |
| 171 CLASS="LITERAL" | |
| 172 >SDL_RELEASED</TT | |
| 173 ></TD | |
| 174 ></TR | |
| 175 ><TR | |
| 176 ><TD | |
| 177 ALIGN="LEFT" | |
| 178 VALIGN="TOP" | |
| 179 ><TT | |
| 180 CLASS="STRUCTFIELD" | |
| 181 ><I | |
| 182 >x</I | |
| 183 ></TT | |
| 184 >, <TT | |
| 185 CLASS="STRUCTFIELD" | |
| 186 ><I | |
| 187 >y</I | |
| 188 ></TT | |
| 189 ></TD | |
| 190 ><TD | |
| 191 ALIGN="LEFT" | |
| 192 VALIGN="TOP" | |
| 193 >The X/Y coordinates of the mouse at press/release time</TD | |
| 194 ></TR | |
| 195 ></TBODY | |
| 196 ></TABLE | |
| 197 ><P | |
| 198 ></P | |
| 199 ></DIV | |
| 200 ></DIV | |
| 201 ><DIV | |
| 202 CLASS="REFSECT1" | |
| 203 ><A | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
204 NAME="AEN4176" |
| 0 | 205 ></A |
| 206 ><H2 | |
| 207 >Description</H2 | |
| 208 ><P | |
| 209 ><SPAN | |
| 210 CLASS="STRUCTNAME" | |
| 211 >SDL_MouseButtonEvent</SPAN | |
| 212 > is a member of the <A | |
| 213 HREF="sdlevent.html" | |
| 214 ><SPAN | |
| 215 CLASS="STRUCTNAME" | |
| 216 >SDL_Event</SPAN | |
| 217 ></A | |
| 218 > union and is used when an event of type <TT | |
| 219 CLASS="LITERAL" | |
| 220 >SDL_MOUSEBUTTONDOWN</TT | |
| 221 > or <TT | |
| 222 CLASS="LITERAL" | |
| 223 >SDL_MOUSEBUTTONUP</TT | |
| 224 > is reported.</P | |
| 225 ><P | |
| 226 >When a mouse button press or release is detected then number of the button pressed (from 1 to 255, with 1 usually being the left button and 2 the right) is placed into <TT | |
| 227 CLASS="STRUCTFIELD" | |
| 228 ><I | |
| 229 >button</I | |
| 230 ></TT | |
| 231 >, the position of the mouse when this event occured is stored in the <TT | |
| 232 CLASS="STRUCTFIELD" | |
| 233 ><I | |
| 234 >x</I | |
| 235 ></TT | |
| 236 > and the <TT | |
| 237 CLASS="STRUCTFIELD" | |
| 238 ><I | |
| 239 >y</I | |
| 240 ></TT | |
| 241 > fields. Like <A | |
| 242 HREF="sdlkeyboardevent.html" | |
| 243 ><SPAN | |
| 244 CLASS="STRUCTNAME" | |
| 245 >SDL_KeyboardEvent</SPAN | |
| 246 ></A | |
| 247 >, information on whether the event was a press or a release event is stored in both the <TT | |
| 248 CLASS="STRUCTFIELD" | |
| 249 ><I | |
| 250 >type</I | |
| 251 ></TT | |
| 252 > and <TT | |
| 253 CLASS="STRUCTFIELD" | |
| 254 ><I | |
| 255 >state</I | |
| 256 ></TT | |
| 257 > fields, but this should be obvious.</P | |
| 258 ></DIV | |
| 259 ><DIV | |
| 260 CLASS="REFSECT1" | |
| 261 ><A | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
262 NAME="AEN4192" |
| 0 | 263 ></A |
| 264 ><H2 | |
| 265 >See Also</H2 | |
| 266 ><P | |
| 267 ><A | |
| 268 HREF="sdlevent.html" | |
| 269 ><SPAN | |
| 270 CLASS="STRUCTNAME" | |
| 271 >SDL_Event</SPAN | |
| 272 ></A | |
| 273 >, | |
| 274 <A | |
| 275 HREF="sdlmousemotionevent.html" | |
| 276 ><SPAN | |
| 277 CLASS="STRUCTNAME" | |
| 278 >SDL_MouseMotionEvent</SPAN | |
| 279 ></A | |
| 280 ></P | |
| 281 ></DIV | |
| 282 ><DIV | |
| 283 CLASS="NAVFOOTER" | |
| 284 ><HR | |
| 285 ALIGN="LEFT" | |
| 286 WIDTH="100%"><TABLE | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
287 SUMMARY="Footer navigation table" |
| 0 | 288 WIDTH="100%" |
| 289 BORDER="0" | |
| 290 CELLPADDING="0" | |
| 291 CELLSPACING="0" | |
| 292 ><TR | |
| 293 ><TD | |
| 294 WIDTH="33%" | |
| 295 ALIGN="left" | |
| 296 VALIGN="top" | |
| 297 ><A | |
| 298 HREF="sdlmousemotionevent.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
299 ACCESSKEY="P" |
| 0 | 300 >Prev</A |
| 301 ></TD | |
| 302 ><TD | |
| 303 WIDTH="34%" | |
| 304 ALIGN="center" | |
| 305 VALIGN="top" | |
| 306 ><A | |
| 307 HREF="index.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
308 ACCESSKEY="H" |
| 0 | 309 >Home</A |
| 310 ></TD | |
| 311 ><TD | |
| 312 WIDTH="33%" | |
| 313 ALIGN="right" | |
| 314 VALIGN="top" | |
| 315 ><A | |
| 316 HREF="sdljoyaxisevent.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
317 ACCESSKEY="N" |
| 0 | 318 >Next</A |
| 319 ></TD | |
| 320 ></TR | |
| 321 ><TR | |
| 322 ><TD | |
| 323 WIDTH="33%" | |
| 324 ALIGN="left" | |
| 325 VALIGN="top" | |
| 326 >SDL_MouseMotionEvent</TD | |
| 327 ><TD | |
| 328 WIDTH="34%" | |
| 329 ALIGN="center" | |
| 330 VALIGN="top" | |
| 331 ><A | |
| 332 HREF="eventstructures.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
333 ACCESSKEY="U" |
| 0 | 334 >Up</A |
| 335 ></TD | |
| 336 ><TD | |
| 337 WIDTH="33%" | |
| 338 ALIGN="right" | |
| 339 VALIGN="top" | |
| 340 >SDL_JoyAxisEvent</TD | |
| 341 ></TR | |
| 342 ></TABLE | |
| 343 ></DIV | |
| 344 ></BODY | |
| 345 ></HTML | |
| 346 > |