Mercurial > sdl-ios-xcode
annotate docs/html/sdlcreatecursor.html @ 610:95433459fbd2
Date: Mon, 14 Apr 2003 22:08:27 +0100
From: Patrice Mandin
Subject: [SDL][PATCH] 2 patches for sdl
Here are 2 patches for SDL:
- One is to put the dummy video drivers at the end of the
video drivers list. It gave me problems, when
SDL_VIDEODRIVER is not set, and the dummy driver is used
instead of the platform's driver, just because it is
always available. So the dummy driver must always be at
the end of the list. I suppose picogui and dc video
drivers also don't work.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 15 Apr 2003 15:46:56 +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 > |