Mercurial > sdl-ios-xcode
annotate include/SDL_video.h @ 1164:10b3fb28c86b
Date: Mon, 31 Oct 2005 14:23:34 +0100
From: Thomas Omilian <paccy@arcor.de>
To: sdl@libsdl.org
Subject: [SDL] SDL_SoftStretch() fixed!
Ok, after debugging the night I found the error:
in video/SDL_stretch.c in Line 81
/* See if we need to regenerate the copy buffer */
if ( (src_w == last.src_w) &&
(dst_w == last.src_w) && (bpp == last.bpp) ) {
return(0);
}
the second comparison should be (dst_w == last dst_w).
Perhaps someone could apply it to the source...
Regards,
Thomas Omilian
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Tue, 01 Nov 2005 04:14:24 +0000 |
| parents | 5b1cb1e9140d |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2004 (Happy New Year!)
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* Header file for access to the SDL raw framebuffer window */ | |
| 29 | |
| 30 #ifndef _SDL_video_h | |
| 31 #define _SDL_video_h | |
| 32 | |
| 33 #include <stdio.h> | |
| 34 | |
| 35 #include "SDL_types.h" | |
| 36 #include "SDL_mutex.h" | |
| 37 #include "SDL_rwops.h" | |
| 38 | |
| 39 #include "begin_code.h" | |
| 40 /* Set up for C function definitions, even when using C++ */ | |
| 41 #ifdef __cplusplus | |
| 42 extern "C" { | |
| 43 #endif | |
| 44 | |
| 45 /* Transparency definitions: These define alpha as the opacity of a surface */ | |
| 46 #define SDL_ALPHA_OPAQUE 255 | |
| 47 #define SDL_ALPHA_TRANSPARENT 0 | |
| 48 | |
| 49 /* Useful data types */ | |
|
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50 typedef struct SDL_Rect { |
| 0 | 51 Sint16 x, y; |
| 52 Uint16 w, h; | |
| 53 } SDL_Rect; | |
| 54 | |
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55 typedef struct SDL_Color { |
| 0 | 56 Uint8 r; |
| 57 Uint8 g; | |
| 58 Uint8 b; | |
| 59 Uint8 unused; | |
| 60 } SDL_Color; | |
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61 #define SDL_Colour SDL_Color |
| 0 | 62 |
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63 typedef struct SDL_Palette { |
| 0 | 64 int ncolors; |
| 65 SDL_Color *colors; | |
| 66 } SDL_Palette; | |
| 67 | |
| 68 /* Everything in the pixel format structure is read-only */ | |
| 69 typedef struct SDL_PixelFormat { | |
| 70 SDL_Palette *palette; | |
| 71 Uint8 BitsPerPixel; | |
| 72 Uint8 BytesPerPixel; | |
| 73 Uint8 Rloss; | |
| 74 Uint8 Gloss; | |
| 75 Uint8 Bloss; | |
| 76 Uint8 Aloss; | |
| 77 Uint8 Rshift; | |
| 78 Uint8 Gshift; | |
| 79 Uint8 Bshift; | |
| 80 Uint8 Ashift; | |
| 81 Uint32 Rmask; | |
| 82 Uint32 Gmask; | |
| 83 Uint32 Bmask; | |
| 84 Uint32 Amask; | |
| 85 | |
| 86 /* RGB color key information */ | |
| 87 Uint32 colorkey; | |
| 88 /* Alpha value information (per-surface alpha) */ | |
| 89 Uint8 alpha; | |
| 90 } SDL_PixelFormat; | |
| 91 | |
| 92 /* This structure should be treated as read-only, except for 'pixels', | |
| 93 which, if not NULL, contains the raw pixel data for the surface. | |
| 94 */ | |
| 95 typedef struct SDL_Surface { | |
| 96 Uint32 flags; /* Read-only */ | |
| 97 SDL_PixelFormat *format; /* Read-only */ | |
| 98 int w, h; /* Read-only */ | |
| 99 Uint16 pitch; /* Read-only */ | |
| 100 void *pixels; /* Read-write */ | |
| 101 int offset; /* Private */ | |
| 102 | |
| 103 /* Hardware-specific surface info */ | |
| 104 struct private_hwdata *hwdata; | |
| 105 | |
| 106 /* clipping information */ | |
| 107 SDL_Rect clip_rect; /* Read-only */ | |
| 108 Uint32 unused1; /* for binary compatibility */ | |
| 109 | |
| 110 /* Allow recursive locks */ | |
| 111 Uint32 locked; /* Private */ | |
| 112 | |
| 113 /* info for fast blit mapping to other surfaces */ | |
| 114 struct SDL_BlitMap *map; /* Private */ | |
| 115 | |
| 116 /* format version, bumped at every change to invalidate blit maps */ | |
| 117 unsigned int format_version; /* Private */ | |
| 118 | |
| 119 /* Reference count -- used when freeing surface */ | |
| 120 int refcount; /* Read-mostly */ | |
| 121 } SDL_Surface; | |
| 122 | |
| 123 /* These are the currently supported flags for the SDL_surface */ | |
| 124 /* Available for SDL_CreateRGBSurface() or SDL_SetVideoMode() */ | |
| 125 #define SDL_SWSURFACE 0x00000000 /* Surface is in system memory */ | |
| 126 #define SDL_HWSURFACE 0x00000001 /* Surface is in video memory */ | |
| 127 #define SDL_ASYNCBLIT 0x00000004 /* Use asynchronous blits if possible */ | |
| 128 /* Available for SDL_SetVideoMode() */ | |
| 129 #define SDL_ANYFORMAT 0x10000000 /* Allow any video depth/pixel-format */ | |
| 130 #define SDL_HWPALETTE 0x20000000 /* Surface has exclusive palette */ | |
| 131 #define SDL_DOUBLEBUF 0x40000000 /* Set up double-buffered video mode */ | |
| 132 #define SDL_FULLSCREEN 0x80000000 /* Surface is a full screen display */ | |
| 133 #define SDL_OPENGL 0x00000002 /* Create an OpenGL rendering context */ | |
| 134 #define SDL_OPENGLBLIT 0x0000000A /* Create an OpenGL rendering context and use it for blitting */ | |
| 135 #define SDL_RESIZABLE 0x00000010 /* This video mode may be resized */ | |
| 136 #define SDL_NOFRAME 0x00000020 /* No window caption or edge frame */ | |
| 137 /* Used internally (read-only) */ | |
| 138 #define SDL_HWACCEL 0x00000100 /* Blit uses hardware acceleration */ | |
| 139 #define SDL_SRCCOLORKEY 0x00001000 /* Blit uses a source color key */ | |
| 140 #define SDL_RLEACCELOK 0x00002000 /* Private flag */ | |
| 141 #define SDL_RLEACCEL 0x00004000 /* Surface is RLE encoded */ | |
| 142 #define SDL_SRCALPHA 0x00010000 /* Blit uses source alpha blending */ | |
| 143 #define SDL_PREALLOC 0x01000000 /* Surface uses preallocated memory */ | |
| 144 | |
| 145 /* Evaluates to true if the surface needs to be locked before access */ | |
| 146 #define SDL_MUSTLOCK(surface) \ | |
| 147 (surface->offset || \ | |
| 148 ((surface->flags & (SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_RLEACCEL)) != 0)) | |
| 149 | |
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150 /* typedef for private surface blitting functions */ |
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151 typedef int (*SDL_blit)(struct SDL_Surface *src, SDL_Rect *srcrect, |
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152 struct SDL_Surface *dst, SDL_Rect *dstrect); |
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153 |
| 0 | 154 |
| 155 /* Useful for determining the video hardware capabilities */ | |
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156 typedef struct SDL_VideoInfo { |
| 0 | 157 Uint32 hw_available :1; /* Flag: Can you create hardware surfaces? */ |
| 158 Uint32 wm_available :1; /* Flag: Can you talk to a window manager? */ | |
| 159 Uint32 UnusedBits1 :6; | |
| 160 Uint32 UnusedBits2 :1; | |
| 161 Uint32 blit_hw :1; /* Flag: Accelerated blits HW --> HW */ | |
| 162 Uint32 blit_hw_CC :1; /* Flag: Accelerated blits with Colorkey */ | |
| 163 Uint32 blit_hw_A :1; /* Flag: Accelerated blits with Alpha */ | |
| 164 Uint32 blit_sw :1; /* Flag: Accelerated blits SW --> HW */ | |
| 165 Uint32 blit_sw_CC :1; /* Flag: Accelerated blits with Colorkey */ | |
| 166 Uint32 blit_sw_A :1; /* Flag: Accelerated blits with Alpha */ | |
| 167 Uint32 blit_fill :1; /* Flag: Accelerated color fill */ | |
| 168 Uint32 UnusedBits3 :16; | |
| 169 Uint32 video_mem; /* The total amount of video memory (in K) */ | |
| 170 SDL_PixelFormat *vfmt; /* Value: The format of the video surface */ | |
| 171 } SDL_VideoInfo; | |
| 172 | |
| 173 | |
| 174 /* The most common video overlay formats. | |
| 175 For an explanation of these pixel formats, see: | |
| 176 http://www.webartz.com/fourcc/indexyuv.htm | |
| 177 | |
| 178 For information on the relationship between color spaces, see: | |
| 179 http://www.neuro.sfc.keio.ac.jp/~aly/polygon/info/color-space-faq.html | |
| 180 */ | |
| 181 #define SDL_YV12_OVERLAY 0x32315659 /* Planar mode: Y + V + U (3 planes) */ | |
| 182 #define SDL_IYUV_OVERLAY 0x56555949 /* Planar mode: Y + U + V (3 planes) */ | |
| 183 #define SDL_YUY2_OVERLAY 0x32595559 /* Packed mode: Y0+U0+Y1+V0 (1 plane) */ | |
| 184 #define SDL_UYVY_OVERLAY 0x59565955 /* Packed mode: U0+Y0+V0+Y1 (1 plane) */ | |
| 185 #define SDL_YVYU_OVERLAY 0x55595659 /* Packed mode: Y0+V0+Y1+U0 (1 plane) */ | |
| 186 | |
| 187 /* The YUV hardware video overlay */ | |
| 188 typedef struct SDL_Overlay { | |
| 189 Uint32 format; /* Read-only */ | |
| 190 int w, h; /* Read-only */ | |
| 191 int planes; /* Read-only */ | |
| 192 Uint16 *pitches; /* Read-only */ | |
| 193 Uint8 **pixels; /* Read-write */ | |
| 194 | |
| 195 /* Hardware-specific surface info */ | |
| 196 struct private_yuvhwfuncs *hwfuncs; | |
| 197 struct private_yuvhwdata *hwdata; | |
| 198 | |
| 199 /* Special flags */ | |
| 200 Uint32 hw_overlay :1; /* Flag: This overlay hardware accelerated? */ | |
| 201 Uint32 UnusedBits :31; | |
| 202 } SDL_Overlay; | |
| 203 | |
| 204 | |
| 205 /* Public enumeration for setting the OpenGL window attributes. */ | |
| 206 typedef enum { | |
| 207 SDL_GL_RED_SIZE, | |
| 208 SDL_GL_GREEN_SIZE, | |
| 209 SDL_GL_BLUE_SIZE, | |
| 210 SDL_GL_ALPHA_SIZE, | |
| 211 SDL_GL_BUFFER_SIZE, | |
| 212 SDL_GL_DOUBLEBUFFER, | |
| 213 SDL_GL_DEPTH_SIZE, | |
| 214 SDL_GL_STENCIL_SIZE, | |
| 215 SDL_GL_ACCUM_RED_SIZE, | |
| 216 SDL_GL_ACCUM_GREEN_SIZE, | |
| 217 SDL_GL_ACCUM_BLUE_SIZE, | |
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218 SDL_GL_ACCUM_ALPHA_SIZE, |
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219 SDL_GL_STEREO, |
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220 SDL_GL_MULTISAMPLEBUFFERS, |
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221 SDL_GL_MULTISAMPLESAMPLES |
| 0 | 222 } SDL_GLattr; |
| 223 | |
| 224 /* flags for SDL_SetPalette() */ | |
| 225 #define SDL_LOGPAL 0x01 | |
| 226 #define SDL_PHYSPAL 0x02 | |
| 227 | |
| 228 /* Function prototypes */ | |
| 229 | |
| 230 /* These functions are used internally, and should not be used unless you | |
| 231 * have a specific need to specify the video driver you want to use. | |
| 232 * You should normally use SDL_Init() or SDL_InitSubSystem(). | |
| 233 * | |
| 234 * SDL_VideoInit() initializes the video subsystem -- sets up a connection | |
| 235 * to the window manager, etc, and determines the current video mode and | |
| 236 * pixel format, but does not initialize a window or graphics mode. | |
| 237 * Note that event handling is activated by this routine. | |
| 238 * | |
| 239 * If you use both sound and video in your application, you need to call | |
| 240 * SDL_Init() before opening the sound device, otherwise under Win32 DirectX, | |
| 241 * you won't be able to set full-screen display modes. | |
| 242 */ | |
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243 extern DECLSPEC int SDLCALL SDL_VideoInit(const char *driver_name, Uint32 flags); |
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244 extern DECLSPEC void SDLCALL SDL_VideoQuit(void); |
| 0 | 245 |
| 246 /* This function fills the given character buffer with the name of the | |
| 247 * video driver, and returns a pointer to it if the video driver has | |
| 248 * been initialized. It returns NULL if no driver has been initialized. | |
| 249 */ | |
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250 extern DECLSPEC char * SDLCALL SDL_VideoDriverName(char *namebuf, int maxlen); |
| 0 | 251 |
| 252 /* | |
| 253 * This function returns a pointer to the current display surface. | |
| 254 * If SDL is doing format conversion on the display surface, this | |
| 255 * function returns the publicly visible surface, not the real video | |
| 256 * surface. | |
| 257 */ | |
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258 extern DECLSPEC SDL_Surface * SDLCALL SDL_GetVideoSurface(void); |
| 0 | 259 |
| 260 /* | |
| 261 * This function returns a read-only pointer to information about the | |
| 262 * video hardware. If this is called before SDL_SetVideoMode(), the 'vfmt' | |
| 263 * member of the returned structure will contain the pixel format of the | |
| 264 * "best" video mode. | |
| 265 */ | |
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266 extern DECLSPEC const SDL_VideoInfo * SDLCALL SDL_GetVideoInfo(void); |
| 0 | 267 |
| 268 /* | |
| 269 * Check to see if a particular video mode is supported. | |
| 270 * It returns 0 if the requested mode is not supported under any bit depth, | |
| 271 * or returns the bits-per-pixel of the closest available mode with the | |
| 272 * given width and height. If this bits-per-pixel is different from the | |
| 273 * one used when setting the video mode, SDL_SetVideoMode() will succeed, | |
| 274 * but will emulate the requested bits-per-pixel with a shadow surface. | |
| 275 * | |
| 276 * The arguments to SDL_VideoModeOK() are the same ones you would pass to | |
| 277 * SDL_SetVideoMode() | |
| 278 */ | |
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279 extern DECLSPEC int SDLCALL SDL_VideoModeOK(int width, int height, int bpp, Uint32 flags); |
| 0 | 280 |
| 281 /* | |
| 282 * Return a pointer to an array of available screen dimensions for the | |
| 283 * given format and video flags, sorted largest to smallest. Returns | |
| 284 * NULL if there are no dimensions available for a particular format, | |
| 285 * or (SDL_Rect **)-1 if any dimension is okay for the given format. | |
| 286 * | |
| 287 * If 'format' is NULL, the mode list will be for the format given | |
| 288 * by SDL_GetVideoInfo()->vfmt | |
| 289 */ | |
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290 extern DECLSPEC SDL_Rect ** SDLCALL SDL_ListModes(SDL_PixelFormat *format, Uint32 flags); |
| 0 | 291 |
| 292 /* | |
| 293 * Set up a video mode with the specified width, height and bits-per-pixel. | |
| 294 * | |
| 295 * If 'bpp' is 0, it is treated as the current display bits per pixel. | |
| 296 * | |
| 297 * If SDL_ANYFORMAT is set in 'flags', the SDL library will try to set the | |
| 298 * requested bits-per-pixel, but will return whatever video pixel format is | |
| 299 * available. The default is to emulate the requested pixel format if it | |
| 300 * is not natively available. | |
| 301 * | |
| 302 * If SDL_HWSURFACE is set in 'flags', the video surface will be placed in | |
| 303 * video memory, if possible, and you may have to call SDL_LockSurface() | |
| 304 * in order to access the raw framebuffer. Otherwise, the video surface | |
| 305 * will be created in system memory. | |
| 306 * | |
| 307 * If SDL_ASYNCBLIT is set in 'flags', SDL will try to perform rectangle | |
| 308 * updates asynchronously, but you must always lock before accessing pixels. | |
| 309 * SDL will wait for updates to complete before returning from the lock. | |
| 310 * | |
| 311 * If SDL_HWPALETTE is set in 'flags', the SDL library will guarantee | |
| 312 * that the colors set by SDL_SetColors() will be the colors you get. | |
| 313 * Otherwise, in 8-bit mode, SDL_SetColors() may not be able to set all | |
| 314 * of the colors exactly the way they are requested, and you should look | |
| 315 * at the video surface structure to determine the actual palette. | |
| 316 * If SDL cannot guarantee that the colors you request can be set, | |
| 317 * i.e. if the colormap is shared, then the video surface may be created | |
| 318 * under emulation in system memory, overriding the SDL_HWSURFACE flag. | |
| 319 * | |
| 320 * If SDL_FULLSCREEN is set in 'flags', the SDL library will try to set | |
| 321 * a fullscreen video mode. The default is to create a windowed mode | |
| 322 * if the current graphics system has a window manager. | |
| 323 * If the SDL library is able to set a fullscreen video mode, this flag | |
| 324 * will be set in the surface that is returned. | |
| 325 * | |
| 326 * If SDL_DOUBLEBUF is set in 'flags', the SDL library will try to set up | |
| 327 * two surfaces in video memory and swap between them when you call | |
| 328 * SDL_Flip(). This is usually slower than the normal single-buffering | |
| 329 * scheme, but prevents "tearing" artifacts caused by modifying video | |
| 330 * memory while the monitor is refreshing. It should only be used by | |
| 331 * applications that redraw the entire screen on every update. | |
| 332 * | |
| 333 * If SDL_RESIZABLE is set in 'flags', the SDL library will allow the | |
| 334 * window manager, if any, to resize the window at runtime. When this | |
| 335 * occurs, SDL will send a SDL_VIDEORESIZE event to you application, | |
| 336 * and you must respond to the event by re-calling SDL_SetVideoMode() | |
| 337 * with the requested size (or another size that suits the application). | |
| 338 * | |
| 339 * If SDL_NOFRAME is set in 'flags', the SDL library will create a window | |
| 340 * without any title bar or frame decoration. Fullscreen video modes have | |
| 341 * this flag set automatically. | |
| 342 * | |
| 343 * This function returns the video framebuffer surface, or NULL if it fails. | |
| 344 * | |
| 345 * If you rely on functionality provided by certain video flags, check the | |
| 346 * flags of the returned surface to make sure that functionality is available. | |
| 347 * SDL will fall back to reduced functionality if the exact flags you wanted | |
| 348 * are not available. | |
| 349 */ | |
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350 extern DECLSPEC SDL_Surface * SDLCALL SDL_SetVideoMode |
| 0 | 351 (int width, int height, int bpp, Uint32 flags); |
| 352 | |
| 353 /* | |
| 354 * Makes sure the given list of rectangles is updated on the given screen. | |
| 355 * If 'x', 'y', 'w' and 'h' are all 0, SDL_UpdateRect will update the entire | |
| 356 * screen. | |
| 357 * These functions should not be called while 'screen' is locked. | |
| 358 */ | |
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359 extern DECLSPEC void SDLCALL SDL_UpdateRects |
| 0 | 360 (SDL_Surface *screen, int numrects, SDL_Rect *rects); |
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361 extern DECLSPEC void SDLCALL SDL_UpdateRect |
| 0 | 362 (SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h); |
| 363 | |
| 364 /* | |
| 365 * On hardware that supports double-buffering, this function sets up a flip | |
| 366 * and returns. The hardware will wait for vertical retrace, and then swap | |
| 367 * video buffers before the next video surface blit or lock will return. | |
| 368 * On hardware that doesn not support double-buffering, this is equivalent | |
| 369 * to calling SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 370 * The SDL_DOUBLEBUF flag must have been passed to SDL_SetVideoMode() when | |
| 371 * setting the video mode for this function to perform hardware flipping. | |
| 372 * This function returns 0 if successful, or -1 if there was an error. | |
| 373 */ | |
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374 extern DECLSPEC int SDLCALL SDL_Flip(SDL_Surface *screen); |
| 0 | 375 |
| 376 /* | |
| 377 * Set the gamma correction for each of the color channels. | |
| 378 * The gamma values range (approximately) between 0.1 and 10.0 | |
| 379 * | |
| 380 * If this function isn't supported directly by the hardware, it will | |
| 381 * be emulated using gamma ramps, if available. If successful, this | |
| 382 * function returns 0, otherwise it returns -1. | |
| 383 */ | |
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384 extern DECLSPEC int SDLCALL SDL_SetGamma(float red, float green, float blue); |
| 0 | 385 |
| 386 /* | |
| 387 * Set the gamma translation table for the red, green, and blue channels | |
| 388 * of the video hardware. Each table is an array of 256 16-bit quantities, | |
| 389 * representing a mapping between the input and output for that channel. | |
| 390 * The input is the index into the array, and the output is the 16-bit | |
| 391 * gamma value at that index, scaled to the output color precision. | |
| 392 * | |
| 393 * You may pass NULL for any of the channels to leave it unchanged. | |
| 394 * If the call succeeds, it will return 0. If the display driver or | |
| 395 * hardware does not support gamma translation, or otherwise fails, | |
| 396 * this function will return -1. | |
| 397 */ | |
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398 extern DECLSPEC int SDLCALL SDL_SetGammaRamp(const Uint16 *red, const Uint16 *green, const Uint16 *blue); |
| 0 | 399 |
| 400 /* | |
| 401 * Retrieve the current values of the gamma translation tables. | |
| 402 * | |
| 403 * You must pass in valid pointers to arrays of 256 16-bit quantities. | |
| 404 * Any of the pointers may be NULL to ignore that channel. | |
| 405 * If the call succeeds, it will return 0. If the display driver or | |
| 406 * hardware does not support gamma translation, or otherwise fails, | |
| 407 * this function will return -1. | |
| 408 */ | |
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409 extern DECLSPEC int SDLCALL SDL_GetGammaRamp(Uint16 *red, Uint16 *green, Uint16 *blue); |
| 0 | 410 |
| 411 /* | |
| 412 * Sets a portion of the colormap for the given 8-bit surface. If 'surface' | |
| 413 * is not a palettized surface, this function does nothing, returning 0. | |
| 414 * If all of the colors were set as passed to SDL_SetColors(), it will | |
| 415 * return 1. If not all the color entries were set exactly as given, | |
| 416 * it will return 0, and you should look at the surface palette to | |
| 417 * determine the actual color palette. | |
| 418 * | |
| 419 * When 'surface' is the surface associated with the current display, the | |
| 420 * display colormap will be updated with the requested colors. If | |
| 421 * SDL_HWPALETTE was set in SDL_SetVideoMode() flags, SDL_SetColors() | |
| 422 * will always return 1, and the palette is guaranteed to be set the way | |
| 423 * you desire, even if the window colormap has to be warped or run under | |
| 424 * emulation. | |
| 425 */ | |
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426 extern DECLSPEC int SDLCALL SDL_SetColors(SDL_Surface *surface, |
| 0 | 427 SDL_Color *colors, int firstcolor, int ncolors); |
| 428 | |
| 429 /* | |
| 430 * Sets a portion of the colormap for a given 8-bit surface. | |
| 431 * 'flags' is one or both of: | |
| 432 * SDL_LOGPAL -- set logical palette, which controls how blits are mapped | |
| 433 * to/from the surface, | |
| 434 * SDL_PHYSPAL -- set physical palette, which controls how pixels look on | |
| 435 * the screen | |
| 436 * Only screens have physical palettes. Separate change of physical/logical | |
| 437 * palettes is only possible if the screen has SDL_HWPALETTE set. | |
| 438 * | |
| 439 * The return value is 1 if all colours could be set as requested, and 0 | |
| 440 * otherwise. | |
| 441 * | |
| 442 * SDL_SetColors() is equivalent to calling this function with | |
| 443 * flags = (SDL_LOGPAL|SDL_PHYSPAL). | |
| 444 */ | |
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445 extern DECLSPEC int SDLCALL SDL_SetPalette(SDL_Surface *surface, int flags, |
| 0 | 446 SDL_Color *colors, int firstcolor, |
| 447 int ncolors); | |
| 448 | |
| 449 /* | |
| 450 * Maps an RGB triple to an opaque pixel value for a given pixel format | |
| 451 */ | |
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452 extern DECLSPEC Uint32 SDLCALL SDL_MapRGB |
| 0 | 453 (SDL_PixelFormat *format, Uint8 r, Uint8 g, Uint8 b); |
| 454 | |
| 455 /* | |
| 456 * Maps an RGBA quadruple to a pixel value for a given pixel format | |
| 457 */ | |
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458 extern DECLSPEC Uint32 SDLCALL SDL_MapRGBA(SDL_PixelFormat *format, |
| 0 | 459 Uint8 r, Uint8 g, Uint8 b, Uint8 a); |
| 460 | |
| 461 /* | |
| 462 * Maps a pixel value into the RGB components for a given pixel format | |
| 463 */ | |
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464 extern DECLSPEC void SDLCALL SDL_GetRGB(Uint32 pixel, SDL_PixelFormat *fmt, |
| 0 | 465 Uint8 *r, Uint8 *g, Uint8 *b); |
| 466 | |
| 467 /* | |
| 468 * Maps a pixel value into the RGBA components for a given pixel format | |
| 469 */ | |
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470 extern DECLSPEC void SDLCALL SDL_GetRGBA(Uint32 pixel, SDL_PixelFormat *fmt, |
| 0 | 471 Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a); |
| 472 | |
| 473 /* | |
| 474 * Allocate and free an RGB surface (must be called after SDL_SetVideoMode) | |
| 475 * If the depth is 4 or 8 bits, an empty palette is allocated for the surface. | |
| 476 * If the depth is greater than 8 bits, the pixel format is set using the | |
| 477 * flags '[RGB]mask'. | |
| 478 * If the function runs out of memory, it will return NULL. | |
| 479 * | |
| 480 * The 'flags' tell what kind of surface to create. | |
| 481 * SDL_SWSURFACE means that the surface should be created in system memory. | |
| 482 * SDL_HWSURFACE means that the surface should be created in video memory, | |
| 483 * with the same format as the display surface. This is useful for surfaces | |
| 484 * that will not change much, to take advantage of hardware acceleration | |
| 485 * when being blitted to the display surface. | |
| 486 * SDL_ASYNCBLIT means that SDL will try to perform asynchronous blits with | |
| 487 * this surface, but you must always lock it before accessing the pixels. | |
| 488 * SDL will wait for current blits to finish before returning from the lock. | |
| 489 * SDL_SRCCOLORKEY indicates that the surface will be used for colorkey blits. | |
| 490 * If the hardware supports acceleration of colorkey blits between | |
| 491 * two surfaces in video memory, SDL will try to place the surface in | |
| 492 * video memory. If this isn't possible or if there is no hardware | |
| 493 * acceleration available, the surface will be placed in system memory. | |
| 494 * SDL_SRCALPHA means that the surface will be used for alpha blits and | |
| 495 * if the hardware supports hardware acceleration of alpha blits between | |
| 496 * two surfaces in video memory, to place the surface in video memory | |
| 497 * if possible, otherwise it will be placed in system memory. | |
| 498 * If the surface is created in video memory, blits will be _much_ faster, | |
| 499 * but the surface format must be identical to the video surface format, | |
| 500 * and the only way to access the pixels member of the surface is to use | |
| 501 * the SDL_LockSurface() and SDL_UnlockSurface() calls. | |
| 502 * If the requested surface actually resides in video memory, SDL_HWSURFACE | |
| 503 * will be set in the flags member of the returned surface. If for some | |
| 504 * reason the surface could not be placed in video memory, it will not have | |
| 505 * the SDL_HWSURFACE flag set, and will be created in system memory instead. | |
| 506 */ | |
| 507 #define SDL_AllocSurface SDL_CreateRGBSurface | |
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508 extern DECLSPEC SDL_Surface * SDLCALL SDL_CreateRGBSurface |
| 0 | 509 (Uint32 flags, int width, int height, int depth, |
| 510 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask); | |
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511 extern DECLSPEC SDL_Surface * SDLCALL SDL_CreateRGBSurfaceFrom(void *pixels, |
| 0 | 512 int width, int height, int depth, int pitch, |
| 513 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask); | |
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514 extern DECLSPEC void SDLCALL SDL_FreeSurface(SDL_Surface *surface); |
| 0 | 515 |
| 516 /* | |
| 517 * SDL_LockSurface() sets up a surface for directly accessing the pixels. | |
| 518 * Between calls to SDL_LockSurface()/SDL_UnlockSurface(), you can write | |
| 519 * to and read from 'surface->pixels', using the pixel format stored in | |
| 520 * 'surface->format'. Once you are done accessing the surface, you should | |
| 521 * use SDL_UnlockSurface() to release it. | |
| 522 * | |
| 523 * Not all surfaces require locking. If SDL_MUSTLOCK(surface) evaluates | |
| 524 * to 0, then you can read and write to the surface at any time, and the | |
| 525 * pixel format of the surface will not change. In particular, if the | |
| 526 * SDL_HWSURFACE flag is not given when calling SDL_SetVideoMode(), you | |
| 527 * will not need to lock the display surface before accessing it. | |
| 528 * | |
| 529 * No operating system or library calls should be made between lock/unlock | |
| 530 * pairs, as critical system locks may be held during this time. | |
| 531 * | |
| 532 * SDL_LockSurface() returns 0, or -1 if the surface couldn't be locked. | |
| 533 */ | |
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534 extern DECLSPEC int SDLCALL SDL_LockSurface(SDL_Surface *surface); |
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535 extern DECLSPEC void SDLCALL SDL_UnlockSurface(SDL_Surface *surface); |
| 0 | 536 |
| 537 /* | |
| 538 * Load a surface from a seekable SDL data source (memory or file.) | |
| 539 * If 'freesrc' is non-zero, the source will be closed after being read. | |
| 540 * Returns the new surface, or NULL if there was an error. | |
| 541 * The new surface should be freed with SDL_FreeSurface(). | |
| 542 */ | |
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543 extern DECLSPEC SDL_Surface * SDLCALL SDL_LoadBMP_RW(SDL_RWops *src, int freesrc); |
| 0 | 544 |
| 545 /* Convenience macro -- load a surface from a file */ | |
| 546 #define SDL_LoadBMP(file) SDL_LoadBMP_RW(SDL_RWFromFile(file, "rb"), 1) | |
| 547 | |
| 548 /* | |
| 549 * Save a surface to a seekable SDL data source (memory or file.) | |
| 550 * If 'freedst' is non-zero, the source will be closed after being written. | |
| 551 * Returns 0 if successful or -1 if there was an error. | |
| 552 */ | |
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553 extern DECLSPEC int SDLCALL SDL_SaveBMP_RW |
| 0 | 554 (SDL_Surface *surface, SDL_RWops *dst, int freedst); |
| 555 | |
| 556 /* Convenience macro -- save a surface to a file */ | |
| 557 #define SDL_SaveBMP(surface, file) \ | |
| 558 SDL_SaveBMP_RW(surface, SDL_RWFromFile(file, "wb"), 1) | |
| 559 | |
| 560 /* | |
| 561 * Sets the color key (transparent pixel) in a blittable surface. | |
| 562 * If 'flag' is SDL_SRCCOLORKEY (optionally OR'd with SDL_RLEACCEL), | |
| 563 * 'key' will be the transparent pixel in the source image of a blit. | |
| 564 * SDL_RLEACCEL requests RLE acceleration for the surface if present, | |
| 565 * and removes RLE acceleration if absent. | |
| 566 * If 'flag' is 0, this function clears any current color key. | |
| 567 * This function returns 0, or -1 if there was an error. | |
| 568 */ | |
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569 extern DECLSPEC int SDLCALL SDL_SetColorKey |
| 0 | 570 (SDL_Surface *surface, Uint32 flag, Uint32 key); |
| 571 | |
| 572 /* | |
| 573 * This function sets the alpha value for the entire surface, as opposed to | |
| 574 * using the alpha component of each pixel. This value measures the range | |
| 575 * of transparency of the surface, 0 being completely transparent to 255 | |
| 576 * being completely opaque. An 'alpha' value of 255 causes blits to be | |
| 577 * opaque, the source pixels copied to the destination (the default). Note | |
| 578 * that per-surface alpha can be combined with colorkey transparency. | |
| 579 * | |
| 580 * If 'flag' is 0, alpha blending is disabled for the surface. | |
| 581 * If 'flag' is SDL_SRCALPHA, alpha blending is enabled for the surface. | |
| 582 * OR:ing the flag with SDL_RLEACCEL requests RLE acceleration for the | |
| 583 * surface; if SDL_RLEACCEL is not specified, the RLE accel will be removed. | |
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584 * |
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585 * The 'alpha' parameter is ignored for surfaces that have an alpha channel. |
| 0 | 586 */ |
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587 extern DECLSPEC int SDLCALL SDL_SetAlpha(SDL_Surface *surface, Uint32 flag, Uint8 alpha); |
| 0 | 588 |
| 589 /* | |
| 590 * Sets the clipping rectangle for the destination surface in a blit. | |
| 591 * | |
| 592 * If the clip rectangle is NULL, clipping will be disabled. | |
| 593 * If the clip rectangle doesn't intersect the surface, the function will | |
| 594 * return SDL_FALSE and blits will be completely clipped. Otherwise the | |
| 595 * function returns SDL_TRUE and blits to the surface will be clipped to | |
| 596 * the intersection of the surface area and the clipping rectangle. | |
| 597 * | |
| 598 * Note that blits are automatically clipped to the edges of the source | |
| 599 * and destination surfaces. | |
| 600 */ | |
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601 extern DECLSPEC SDL_bool SDLCALL SDL_SetClipRect(SDL_Surface *surface, const SDL_Rect *rect); |
| 0 | 602 |
| 603 /* | |
| 604 * Gets the clipping rectangle for the destination surface in a blit. | |
| 605 * 'rect' must be a pointer to a valid rectangle which will be filled | |
| 606 * with the correct values. | |
| 607 */ | |
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608 extern DECLSPEC void SDLCALL SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect); |
| 0 | 609 |
| 610 /* | |
| 611 * Creates a new surface of the specified format, and then copies and maps | |
| 612 * the given surface to it so the blit of the converted surface will be as | |
| 613 * fast as possible. If this function fails, it returns NULL. | |
| 614 * | |
| 615 * The 'flags' parameter is passed to SDL_CreateRGBSurface() and has those | |
| 616 * semantics. You can also pass SDL_RLEACCEL in the flags parameter and | |
| 617 * SDL will try to RLE accelerate colorkey and alpha blits in the resulting | |
| 618 * surface. | |
| 619 * | |
| 620 * This function is used internally by SDL_DisplayFormat(). | |
| 621 */ | |
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622 extern DECLSPEC SDL_Surface * SDLCALL SDL_ConvertSurface |
| 0 | 623 (SDL_Surface *src, SDL_PixelFormat *fmt, Uint32 flags); |
| 624 | |
| 625 /* | |
| 626 * This performs a fast blit from the source surface to the destination | |
| 627 * surface. It assumes that the source and destination rectangles are | |
| 628 * the same size. If either 'srcrect' or 'dstrect' are NULL, the entire | |
| 629 * surface (src or dst) is copied. The final blit rectangles are saved | |
| 630 * in 'srcrect' and 'dstrect' after all clipping is performed. | |
| 631 * If the blit is successful, it returns 0, otherwise it returns -1. | |
| 632 * | |
| 633 * The blit function should not be called on a locked surface. | |
| 634 * | |
| 635 * The blit semantics for surfaces with and without alpha and colorkey | |
| 636 * are defined as follows: | |
| 637 * | |
| 638 * RGBA->RGB: | |
| 639 * SDL_SRCALPHA set: | |
| 640 * alpha-blend (using alpha-channel). | |
| 641 * SDL_SRCCOLORKEY ignored. | |
| 642 * SDL_SRCALPHA not set: | |
| 643 * copy RGB. | |
| 644 * if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 645 * RGB values of the source colour key, ignoring alpha in the | |
| 646 * comparison. | |
| 647 * | |
| 648 * RGB->RGBA: | |
| 649 * SDL_SRCALPHA set: | |
| 650 * alpha-blend (using the source per-surface alpha value); | |
| 651 * set destination alpha to opaque. | |
| 652 * SDL_SRCALPHA not set: | |
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653 * copy RGB, set destination alpha to source per-surface alpha value. |
| 0 | 654 * both: |
| 655 * if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 656 * source colour key. | |
| 657 * | |
| 658 * RGBA->RGBA: | |
| 659 * SDL_SRCALPHA set: | |
| 660 * alpha-blend (using the source alpha channel) the RGB values; | |
| 661 * leave destination alpha untouched. [Note: is this correct?] | |
| 662 * SDL_SRCCOLORKEY ignored. | |
| 663 * SDL_SRCALPHA not set: | |
| 664 * copy all of RGBA to the destination. | |
| 665 * if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 666 * RGB values of the source colour key, ignoring alpha in the | |
| 667 * comparison. | |
| 668 * | |
| 669 * RGB->RGB: | |
| 670 * SDL_SRCALPHA set: | |
| 671 * alpha-blend (using the source per-surface alpha value). | |
| 672 * SDL_SRCALPHA not set: | |
| 673 * copy RGB. | |
| 674 * both: | |
| 675 * if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 676 * source colour key. | |
| 677 * | |
| 678 * If either of the surfaces were in video memory, and the blit returns -2, | |
| 679 * the video memory was lost, so it should be reloaded with artwork and | |
| 680 * re-blitted: | |
| 681 while ( SDL_BlitSurface(image, imgrect, screen, dstrect) == -2 ) { | |
| 682 while ( SDL_LockSurface(image) < 0 ) | |
| 683 Sleep(10); | |
| 684 -- Write image pixels to image->pixels -- | |
| 685 SDL_UnlockSurface(image); | |
| 686 } | |
| 687 * This happens under DirectX 5.0 when the system switches away from your | |
| 688 * fullscreen application. The lock will also fail until you have access | |
| 689 * to the video memory again. | |
| 690 */ | |
| 691 /* You should call SDL_BlitSurface() unless you know exactly how SDL | |
| 692 blitting works internally and how to use the other blit functions. | |
| 693 */ | |
| 694 #define SDL_BlitSurface SDL_UpperBlit | |
| 695 | |
| 696 /* This is the public blit function, SDL_BlitSurface(), and it performs | |
| 697 rectangle validation and clipping before passing it to SDL_LowerBlit() | |
| 698 */ | |
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699 extern DECLSPEC int SDLCALL SDL_UpperBlit |
| 0 | 700 (SDL_Surface *src, SDL_Rect *srcrect, |
| 701 SDL_Surface *dst, SDL_Rect *dstrect); | |
| 702 /* This is a semi-private blit function and it performs low-level surface | |
| 703 blitting only. | |
| 704 */ | |
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705 extern DECLSPEC int SDLCALL SDL_LowerBlit |
| 0 | 706 (SDL_Surface *src, SDL_Rect *srcrect, |
| 707 SDL_Surface *dst, SDL_Rect *dstrect); | |
| 708 | |
| 709 /* | |
| 710 * This function performs a fast fill of the given rectangle with 'color' | |
| 711 * The given rectangle is clipped to the destination surface clip area | |
| 712 * and the final fill rectangle is saved in the passed in pointer. | |
| 713 * If 'dstrect' is NULL, the whole surface will be filled with 'color' | |
| 714 * The color should be a pixel of the format used by the surface, and | |
| 715 * can be generated by the SDL_MapRGB() function. | |
| 716 * This function returns 0 on success, or -1 on error. | |
| 717 */ | |
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718 extern DECLSPEC int SDLCALL SDL_FillRect |
| 0 | 719 (SDL_Surface *dst, SDL_Rect *dstrect, Uint32 color); |
| 720 | |
| 721 /* | |
| 722 * This function takes a surface and copies it to a new surface of the | |
| 723 * pixel format and colors of the video framebuffer, suitable for fast | |
| 724 * blitting onto the display surface. It calls SDL_ConvertSurface() | |
| 725 * | |
| 726 * If you want to take advantage of hardware colorkey or alpha blit | |
| 727 * acceleration, you should set the colorkey and alpha value before | |
| 728 * calling this function. | |
| 729 * | |
| 730 * If the conversion fails or runs out of memory, it returns NULL | |
| 731 */ | |
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732 extern DECLSPEC SDL_Surface * SDLCALL SDL_DisplayFormat(SDL_Surface *surface); |
| 0 | 733 |
| 734 /* | |
| 735 * This function takes a surface and copies it to a new surface of the | |
| 736 * pixel format and colors of the video framebuffer (if possible), | |
| 737 * suitable for fast alpha blitting onto the display surface. | |
| 738 * The new surface will always have an alpha channel. | |
| 739 * | |
| 740 * If you want to take advantage of hardware colorkey or alpha blit | |
| 741 * acceleration, you should set the colorkey and alpha value before | |
| 742 * calling this function. | |
| 743 * | |
| 744 * If the conversion fails or runs out of memory, it returns NULL | |
| 745 */ | |
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746 extern DECLSPEC SDL_Surface * SDLCALL SDL_DisplayFormatAlpha(SDL_Surface *surface); |
| 0 | 747 |
| 748 | |
| 749 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
| 750 /* YUV video surface overlay functions */ | |
| 751 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
| 752 | |
| 753 /* This function creates a video output overlay | |
| 754 Calling the returned surface an overlay is something of a misnomer because | |
| 755 the contents of the display surface underneath the area where the overlay | |
| 756 is shown is undefined - it may be overwritten with the converted YUV data. | |
| 757 */ | |
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758 extern DECLSPEC SDL_Overlay * SDLCALL SDL_CreateYUVOverlay(int width, int height, |
| 0 | 759 Uint32 format, SDL_Surface *display); |
| 760 | |
| 761 /* Lock an overlay for direct access, and unlock it when you are done */ | |
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762 extern DECLSPEC int SDLCALL SDL_LockYUVOverlay(SDL_Overlay *overlay); |
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763 extern DECLSPEC void SDLCALL SDL_UnlockYUVOverlay(SDL_Overlay *overlay); |
| 0 | 764 |
| 765 /* Blit a video overlay to the display surface. | |
| 766 The contents of the video surface underneath the blit destination are | |
| 767 not defined. | |
| 768 The width and height of the destination rectangle may be different from | |
| 769 that of the overlay, but currently only 2x scaling is supported. | |
| 770 */ | |
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771 extern DECLSPEC int SDLCALL SDL_DisplayYUVOverlay(SDL_Overlay *overlay, SDL_Rect *dstrect); |
| 0 | 772 |
| 773 /* Free a video overlay */ | |
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774 extern DECLSPEC void SDLCALL SDL_FreeYUVOverlay(SDL_Overlay *overlay); |
| 0 | 775 |
| 776 | |
| 777 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
| 778 /* OpenGL support functions. */ | |
| 779 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
| 780 | |
| 781 /* | |
| 782 * Dynamically load a GL driver, if SDL is built with dynamic GL. | |
| 783 * | |
| 784 * SDL links normally with the OpenGL library on your system by default, | |
| 785 * but you can compile it to dynamically load the GL driver at runtime. | |
| 786 * If you do this, you need to retrieve all of the GL functions used in | |
| 787 * your program from the dynamic library using SDL_GL_GetProcAddress(). | |
| 788 * | |
| 789 * This is disabled in default builds of SDL. | |
| 790 */ | |
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791 extern DECLSPEC int SDLCALL SDL_GL_LoadLibrary(const char *path); |
| 0 | 792 |
| 793 /* | |
| 794 * Get the address of a GL function (for extension functions) | |
| 795 */ | |
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796 extern DECLSPEC void * SDLCALL SDL_GL_GetProcAddress(const char* proc); |
| 0 | 797 |
| 798 /* | |
| 799 * Set an attribute of the OpenGL subsystem before intialization. | |
| 800 */ | |
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801 extern DECLSPEC int SDLCALL SDL_GL_SetAttribute(SDL_GLattr attr, int value); |
| 0 | 802 |
| 803 /* | |
| 804 * Get an attribute of the OpenGL subsystem from the windowing | |
| 805 * interface, such as glX. This is of course different from getting | |
| 806 * the values from SDL's internal OpenGL subsystem, which only | |
| 807 * stores the values you request before initialization. | |
| 808 * | |
| 809 * Developers should track the values they pass into SDL_GL_SetAttribute | |
| 810 * themselves if they want to retrieve these values. | |
| 811 */ | |
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812 extern DECLSPEC int SDLCALL SDL_GL_GetAttribute(SDL_GLattr attr, int* value); |
| 0 | 813 |
| 814 /* | |
| 815 * Swap the OpenGL buffers, if double-buffering is supported. | |
| 816 */ | |
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817 extern DECLSPEC void SDLCALL SDL_GL_SwapBuffers(void); |
| 0 | 818 |
| 819 /* | |
| 820 * Internal functions that should not be called unless you have read | |
| 821 * and understood the source code for these functions. | |
| 822 */ | |
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823 extern DECLSPEC void SDLCALL SDL_GL_UpdateRects(int numrects, SDL_Rect* rects); |
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824 extern DECLSPEC void SDLCALL SDL_GL_Lock(void); |
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825 extern DECLSPEC void SDLCALL SDL_GL_Unlock(void); |
| 0 | 826 |
| 827 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
| 828 /* These functions allow interaction with the window manager, if any. */ | |
| 829 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
| 830 | |
| 831 /* | |
| 832 * Sets/Gets the title and icon text of the display window | |
| 833 */ | |
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834 extern DECLSPEC void SDLCALL SDL_WM_SetCaption(const char *title, const char *icon); |
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835 extern DECLSPEC void SDLCALL SDL_WM_GetCaption(char **title, char **icon); |
| 0 | 836 |
| 837 /* | |
| 838 * Sets the icon for the display window. | |
| 839 * This function must be called before the first call to SDL_SetVideoMode(). | |
| 840 * It takes an icon surface, and a mask in MSB format. | |
| 841 * If 'mask' is NULL, the entire icon surface will be used as the icon. | |
| 842 */ | |
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843 extern DECLSPEC void SDLCALL SDL_WM_SetIcon(SDL_Surface *icon, Uint8 *mask); |
| 0 | 844 |
| 845 /* | |
| 846 * This function iconifies the window, and returns 1 if it succeeded. | |
| 847 * If the function succeeds, it generates an SDL_APPACTIVE loss event. | |
| 848 * This function is a noop and returns 0 in non-windowed environments. | |
| 849 */ | |
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850 extern DECLSPEC int SDLCALL SDL_WM_IconifyWindow(void); |
| 0 | 851 |
| 852 /* | |
| 853 * Toggle fullscreen mode without changing the contents of the screen. | |
| 854 * If the display surface does not require locking before accessing | |
| 855 * the pixel information, then the memory pointers will not change. | |
| 856 * | |
| 857 * If this function was able to toggle fullscreen mode (change from | |
| 858 * running in a window to fullscreen, or vice-versa), it will return 1. | |
| 859 * If it is not implemented, or fails, it returns 0. | |
| 860 * | |
| 861 * The next call to SDL_SetVideoMode() will set the mode fullscreen | |
| 862 * attribute based on the flags parameter - if SDL_FULLSCREEN is not | |
| 863 * set, then the display will be windowed by default where supported. | |
| 864 * | |
| 865 * This is currently only implemented in the X11 video driver. | |
| 866 */ | |
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867 extern DECLSPEC int SDLCALL SDL_WM_ToggleFullScreen(SDL_Surface *surface); |
| 0 | 868 |
| 869 /* | |
| 870 * This function allows you to set and query the input grab state of | |
| 871 * the application. It returns the new input grab state. | |
| 872 */ | |
| 873 typedef enum { | |
| 874 SDL_GRAB_QUERY = -1, | |
| 875 SDL_GRAB_OFF = 0, | |
| 876 SDL_GRAB_ON = 1, | |
| 877 SDL_GRAB_FULLSCREEN /* Used internally */ | |
| 878 } SDL_GrabMode; | |
| 879 /* | |
| 880 * Grabbing means that the mouse is confined to the application window, | |
| 881 * and nearly all keyboard input is passed directly to the application, | |
| 882 * and not interpreted by a window manager, if any. | |
| 883 */ | |
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884 extern DECLSPEC SDL_GrabMode SDLCALL SDL_WM_GrabInput(SDL_GrabMode mode); |
| 0 | 885 |
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886 /* Not in public API at the moment - do not use! */ |
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887 extern DECLSPEC int SDLCALL SDL_SoftStretch(SDL_Surface *src, SDL_Rect *srcrect, |
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888 SDL_Surface *dst, SDL_Rect *dstrect); |
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889 |
| 0 | 890 /* Ends C function definitions when using C++ */ |
| 891 #ifdef __cplusplus | |
| 892 } | |
| 893 #endif | |
| 894 #include "close_code.h" | |
| 895 | |
| 896 #endif /* _SDL_video_h */ |