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annotate docs/html/sdlcreatecursor.html @ 537:77b05010bb33
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| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 09 Nov 2002 05:51:13 +0000 |
| parents | e5bc29de3f0a |
| children | 355632dca928 |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_CreateCursor</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.64 |
| 0 | 8 "><LINK |
| 9 REL="HOME" | |
| 10 TITLE="SDL Library Documentation" | |
| 11 HREF="index.html"><LINK | |
| 12 REL="UP" | |
| 13 TITLE="Video" | |
| 14 HREF="video.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="SDL_WarpMouse" | |
| 17 HREF="sdlwarpmouse.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_FreeCursor" | |
| 20 HREF="sdlfreecursor.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 | |
| 31 WIDTH="100%" | |
| 32 BORDER="0" | |
| 33 CELLPADDING="0" | |
| 34 CELLSPACING="0" | |
| 35 ><TR | |
| 36 ><TH | |
| 37 COLSPAN="3" | |
| 38 ALIGN="center" | |
| 39 >SDL Library Documentation</TH | |
| 40 ></TR | |
| 41 ><TR | |
| 42 ><TD | |
| 43 WIDTH="10%" | |
| 44 ALIGN="left" | |
| 45 VALIGN="bottom" | |
| 46 ><A | |
| 47 HREF="sdlwarpmouse.html" | |
| 48 >Prev</A | |
| 49 ></TD | |
| 50 ><TD | |
| 51 WIDTH="80%" | |
| 52 ALIGN="center" | |
| 53 VALIGN="bottom" | |
| 54 ></TD | |
| 55 ><TD | |
| 56 WIDTH="10%" | |
| 57 ALIGN="right" | |
| 58 VALIGN="bottom" | |
| 59 ><A | |
| 60 HREF="sdlfreecursor.html" | |
| 61 >Next</A | |
| 62 ></TD | |
| 63 ></TR | |
| 64 ></TABLE | |
| 65 ><HR | |
| 66 ALIGN="LEFT" | |
| 67 WIDTH="100%"></DIV | |
| 68 ><H1 | |
| 69 ><A | |
| 70 NAME="SDLCREATECURSOR" | |
| 71 >SDL_CreateCursor</A | |
| 72 ></H1 | |
| 73 ><DIV | |
| 74 CLASS="REFNAMEDIV" | |
| 75 ><A | |
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76 NAME="AEN2103" |
| 0 | 77 ></A |
| 78 ><H2 | |
| 79 >Name</H2 | |
| 80 >SDL_CreateCursor -- Creates a new mouse cursor.</DIV | |
| 81 ><DIV | |
| 82 CLASS="REFSYNOPSISDIV" | |
| 83 ><A | |
|
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84 NAME="AEN2106" |
| 0 | 85 ></A |
| 86 ><H2 | |
| 87 >Synopsis</H2 | |
| 88 ><DIV | |
| 89 CLASS="FUNCSYNOPSIS" | |
| 90 ><A | |
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91 NAME="AEN2107" |
| 0 | 92 ></A |
| 93 ><P | |
| 94 ></P | |
| 95 ><PRE | |
| 96 CLASS="FUNCSYNOPSISINFO" | |
| 97 >#include "SDL.h"</PRE | |
| 98 ><P | |
| 99 ><CODE | |
| 100 ><CODE | |
| 101 CLASS="FUNCDEF" | |
| 102 >SDL_Cursor *<B | |
| 103 CLASS="FSFUNC" | |
| 104 >SDL_CreateCursor</B | |
| 105 ></CODE | |
| 106 >(Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y);</CODE | |
| 107 ></P | |
| 108 ><P | |
| 109 ></P | |
| 110 ></DIV | |
| 111 ></DIV | |
| 112 ><DIV | |
| 113 CLASS="REFSECT1" | |
| 114 ><A | |
|
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115 NAME="AEN2113" |
| 0 | 116 ></A |
| 117 ><H2 | |
| 118 >Description</H2 | |
| 119 ><P | |
| 120 >Create a cursor using the specified <TT | |
| 121 CLASS="PARAMETER" | |
| 122 ><I | |
| 123 >data</I | |
| 124 ></TT | |
| 125 > and <TT | |
| 126 CLASS="PARAMETER" | |
| 127 ><I | |
| 128 >mask</I | |
| 129 ></TT | |
| 130 > (in MSB format). | |
| 131 The cursor width must be a multiple of 8 bits.</P | |
| 132 ><P | |
| 133 >The cursor is created in black and white according to the following: | |
| 134 <DIV | |
| 135 CLASS="INFORMALTABLE" | |
| 136 ><A | |
|
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137 NAME="AEN2119" |
| 0 | 138 ></A |
| 139 ><P | |
| 140 ></P | |
| 141 ><TABLE | |
| 142 BORDER="1" | |
| 143 CLASS="CALSTABLE" | |
| 144 ><THEAD | |
| 145 ><TR | |
| 146 ><TH | |
| 147 ALIGN="LEFT" | |
| 148 VALIGN="TOP" | |
| 149 >Data / Mask</TH | |
| 150 ><TH | |
| 151 ALIGN="LEFT" | |
| 152 VALIGN="TOP" | |
| 153 >Resulting pixel on screen</TH | |
| 154 ></TR | |
| 155 ></THEAD | |
| 156 ><TBODY | |
| 157 ><TR | |
| 158 ><TD | |
| 159 ALIGN="LEFT" | |
| 160 VALIGN="TOP" | |
| 161 >0 / 1</TD | |
| 162 ><TD | |
| 163 ALIGN="LEFT" | |
| 164 VALIGN="TOP" | |
| 165 >White</TD | |
| 166 ></TR | |
| 167 ><TR | |
| 168 ><TD | |
| 169 ALIGN="LEFT" | |
| 170 VALIGN="TOP" | |
| 171 >1 / 1</TD | |
| 172 ><TD | |
| 173 ALIGN="LEFT" | |
| 174 VALIGN="TOP" | |
| 175 >Black</TD | |
| 176 ></TR | |
| 177 ><TR | |
| 178 ><TD | |
| 179 ALIGN="LEFT" | |
| 180 VALIGN="TOP" | |
| 181 >0 / 0</TD | |
| 182 ><TD | |
| 183 ALIGN="LEFT" | |
| 184 VALIGN="TOP" | |
| 185 >Transparent</TD | |
| 186 ></TR | |
| 187 ><TR | |
| 188 ><TD | |
| 189 ALIGN="LEFT" | |
| 190 VALIGN="TOP" | |
| 191 >1 / 0</TD | |
| 192 ><TD | |
| 193 ALIGN="LEFT" | |
| 194 VALIGN="TOP" | |
| 195 >Inverted color if possible, black if not.</TD | |
| 196 ></TR | |
| 197 ></TBODY | |
| 198 ></TABLE | |
| 199 ><P | |
| 200 ></P | |
| 201 ></DIV | |
| 202 ></P | |
| 203 ><P | |
| 204 >Cursors created with this function must be freed with | |
| 205 <A | |
| 206 HREF="sdlfreecursor.html" | |
| 207 >SDL_FreeCursor</A | |
| 208 >.</P | |
| 209 ></DIV | |
| 210 ><DIV | |
| 211 CLASS="REFSECT1" | |
| 212 ><A | |
|
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213 NAME="AEN2140" |
| 0 | 214 ></A |
| 215 ><H2 | |
| 216 >Example</H2 | |
| 217 ><PRE | |
| 218 CLASS="PROGRAMLISTING" | |
| 219 >/* Stolen from the mailing list */ | |
| 220 /* Creates a new mouse cursor from an XPM */ | |
| 221 | |
| 222 | |
| 223 /* XPM */ | |
| 224 static const char *arrow[] = { | |
| 225 /* width height num_colors chars_per_pixel */ | |
| 226 " 32 32 3 1", | |
| 227 /* colors */ | |
| 228 "X c #000000", | |
| 229 ". c #ffffff", | |
| 230 " c None", | |
| 231 /* pixels */ | |
| 232 "X ", | |
| 233 "XX ", | |
| 234 "X.X ", | |
| 235 "X..X ", | |
| 236 "X...X ", | |
| 237 "X....X ", | |
| 238 "X.....X ", | |
| 239 "X......X ", | |
| 240 "X.......X ", | |
| 241 "X........X ", | |
| 242 "X.....XXXXX ", | |
| 243 "X..X..X ", | |
| 244 "X.X X..X ", | |
| 245 "XX X..X ", | |
| 246 "X X..X ", | |
| 247 " X..X ", | |
| 248 " X..X ", | |
| 249 " X..X ", | |
| 250 " XX ", | |
| 251 " ", | |
| 252 " ", | |
| 253 " ", | |
| 254 " ", | |
| 255 " ", | |
| 256 " ", | |
| 257 " ", | |
| 258 " ", | |
| 259 " ", | |
| 260 " ", | |
| 261 " ", | |
| 262 " ", | |
| 263 " ", | |
| 264 "0,0" | |
| 265 }; | |
| 266 | |
| 267 static SDL_Cursor *init_system_cursor(const char *image[]) | |
| 268 { | |
| 269 int i, row, col; | |
| 270 Uint8 data[4*32]; | |
| 271 Uint8 mask[4*32]; | |
| 272 int hot_x, hot_y; | |
| 273 | |
| 274 i = -1; | |
| 275 for ( row=0; row<32; ++row ) { | |
| 276 for ( col=0; col<32; ++col ) { | |
| 277 if ( col % 8 ) { | |
| 278 data[i] <<= 1; | |
| 279 mask[i] <<= 1; | |
| 280 } else { | |
| 281 ++i; | |
| 282 data[i] = mask[i] = 0; | |
| 283 } | |
| 284 switch (image[4+row][col]) { | |
| 285 case 'X': | |
| 286 data[i] |= 0x01; | |
| 287 k[i] |= 0x01; | |
| 288 break; | |
| 289 case '.': | |
| 290 mask[i] |= 0x01; | |
| 291 break; | |
| 292 case ' ': | |
| 293 break; | |
| 294 } | |
| 295 } | |
| 296 } | |
| 297 sscanf(image[4+row], "%d,%d", &hot_x, &hot_y); | |
| 298 return SDL_CreateCursor(data, mask, 32, 32, hot_x, hot_y); | |
| 299 }</PRE | |
| 300 ></DIV | |
| 301 ><DIV | |
| 302 CLASS="REFSECT1" | |
| 303 ><A | |
|
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304 NAME="AEN2143" |
| 0 | 305 ></A |
| 306 ><H2 | |
| 307 >See Also</H2 | |
| 308 ><P | |
| 309 ><A | |
| 310 HREF="sdlfreecursor.html" | |
| 311 ><TT | |
| 312 CLASS="FUNCTION" | |
| 313 >SDL_FreeCursor</TT | |
| 314 ></A | |
| 315 >, | |
| 316 <A | |
| 317 HREF="sdlsetcursor.html" | |
| 318 ><TT | |
| 319 CLASS="FUNCTION" | |
| 320 >SDL_SetCursor</TT | |
| 321 ></A | |
| 322 >, | |
| 323 <A | |
| 324 HREF="sdlshowcursor.html" | |
| 325 ><TT | |
| 326 CLASS="FUNCTION" | |
| 327 >SDL_ShowCursor</TT | |
| 328 ></A | |
| 329 ></P | |
| 330 ></DIV | |
| 331 ><DIV | |
| 332 CLASS="NAVFOOTER" | |
| 333 ><HR | |
| 334 ALIGN="LEFT" | |
| 335 WIDTH="100%"><TABLE | |
| 336 WIDTH="100%" | |
| 337 BORDER="0" | |
| 338 CELLPADDING="0" | |
| 339 CELLSPACING="0" | |
| 340 ><TR | |
| 341 ><TD | |
| 342 WIDTH="33%" | |
| 343 ALIGN="left" | |
| 344 VALIGN="top" | |
| 345 ><A | |
| 346 HREF="sdlwarpmouse.html" | |
| 347 >Prev</A | |
| 348 ></TD | |
| 349 ><TD | |
| 350 WIDTH="34%" | |
| 351 ALIGN="center" | |
| 352 VALIGN="top" | |
| 353 ><A | |
| 354 HREF="index.html" | |
| 355 >Home</A | |
| 356 ></TD | |
| 357 ><TD | |
| 358 WIDTH="33%" | |
| 359 ALIGN="right" | |
| 360 VALIGN="top" | |
| 361 ><A | |
| 362 HREF="sdlfreecursor.html" | |
| 363 >Next</A | |
| 364 ></TD | |
| 365 ></TR | |
| 366 ><TR | |
| 367 ><TD | |
| 368 WIDTH="33%" | |
| 369 ALIGN="left" | |
| 370 VALIGN="top" | |
| 371 >SDL_WarpMouse</TD | |
| 372 ><TD | |
| 373 WIDTH="34%" | |
| 374 ALIGN="center" | |
| 375 VALIGN="top" | |
| 376 ><A | |
| 377 HREF="video.html" | |
| 378 >Up</A | |
| 379 ></TD | |
| 380 ><TD | |
| 381 WIDTH="33%" | |
| 382 ALIGN="right" | |
| 383 VALIGN="top" | |
| 384 >SDL_FreeCursor</TD | |
| 385 ></TR | |
| 386 ></TABLE | |
| 387 ></DIV | |
| 388 ></BODY | |
| 389 ></HTML | |
| 390 > |