| 1 | /* |
| 2 | Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org> |
| 4 | |
| 5 | This software is provided 'as-is', without any express or implied |
| 6 | warranty. In no event will the authors be held liable for any damages |
| 7 | arising from the use of this software. |
| 8 | |
| 9 | Permission is granted to anyone to use this software for any purpose, |
| 10 | including commercial applications, and to alter it and redistribute it |
| 11 | freely, subject to the following restrictions: |
| 12 | |
| 13 | 1. The origin of this software must not be misrepresented; you must not |
| 14 | claim that you wrote the original software. If you use this software |
| 15 | in a product, an acknowledgment in the product documentation would be |
| 16 | appreciated but is not required. |
| 17 | 2. Altered source versions must be plainly marked as such, and must not be |
| 18 | misrepresented as being the original software. |
| 19 | 3. This notice may not be removed or altered from any source distribution. |
| 20 | */ |
| 21 | |
| 22 | #include <SDL_surface.h> |
| 23 | |
| 24 | typedef struct |
| 25 | { |
| 26 | Uint8 *src; |
| 27 | int src_w, src_h; |
| 28 | int src_pitch; |
| 29 | int src_skip; |
| 30 | Uint8 *dst; |
| 31 | int dst_w, dst_h; |
| 32 | int dst_pitch; |
| 33 | int dst_skip; |
| 34 | SDL_PixelFormat *src_fmt; |
| 35 | SDL_PixelFormat *dst_fmt; |
| 36 | Uint8 *table; |
| 37 | int flags; |
| 38 | Uint32 colorkey; |
| 39 | Uint8 r, g, b, a; |
| 40 | } SDL_BlitInfo; |
| 41 | |
| 42 | /* Blit mapping definition */ |
| 43 | typedef struct SDL_BlitMap |
| 44 | { |
| 45 | SDL_Surface *dst; |
| 46 | int identity; |
| 47 | SDL_blit blit; |
| 48 | void *data; |
| 49 | SDL_BlitInfo info; |
| 50 | |
| 51 | /* the version count matches the destination; mismatch indicates |
| 52 | an invalid mapping */ |
| 53 | Uint32 dst_palette_version; |
| 54 | Uint32 src_palette_version; |
| 55 | } SDL_BlitMap; |
| 56 | |
| 57 | typedef struct SDL_VideoInfo |
| 58 | { |
| 59 | Uint32 hw_available:1; |
| 60 | Uint32 wm_available:1; |
| 61 | Uint32 UnusedBits1:6; |
| 62 | Uint32 UnusedBits2:1; |
| 63 | Uint32 blit_hw:1; |
| 64 | Uint32 blit_hw_CC:1; |
| 65 | Uint32 blit_hw_A:1; |
| 66 | Uint32 blit_sw:1; |
| 67 | Uint32 blit_sw_CC:1; |
| 68 | Uint32 blit_sw_A:1; |
| 69 | Uint32 blit_fill:1; |
| 70 | Uint32 UnusedBits3:16; |
| 71 | Uint32 video_mem; |
| 72 | |
| 73 | SDL_PixelFormat *vfmt; |
| 74 | |
| 75 | int current_w; |
| 76 | int current_h; |
| 77 | } SDL_VideoInfo; |
| 78 | |
| 79 | #define SDL_ANYFORMAT 0x00100000 |
| 80 | #define SDL_HWPALETTE 0x00200000 |
| 81 | #define SDL_FULLSCREEN 0x00800000 |
| 82 | #define SDL_RESIZABLE 0x01000000 |
| 83 | #define SDL_NOFRAME 0x02000000 |
| 84 | #define SDL_OPENGL 0x04000000 |
| 85 | #define SDL_HWSURFACE 0x08000001 /**< \note Not used */ |
| 86 | |
| 87 | #define SDL_BUTTON_WHEELUP 4 |
| 88 | #define SDL_BUTTON_WHEELDOWN 5 |
| 89 | |
| 90 | int initialized_video = 0; |
| 91 | |
| 92 | static SDL_Window *SDL_VideoWindow = NULL; |
| 93 | static SDL_Surface *SDL_WindowSurface = NULL; |
| 94 | static SDL_Surface *SDL_VideoSurface = NULL; |
| 95 | static SDL_Surface *SDL_ShadowSurface = NULL; |
| 96 | static SDL_Surface *SDL_PublicSurface = NULL; |
| 97 | static SDL_Rect SDL_VideoViewport; |
| 98 | static char *wm_title = NULL; |
| 99 | static Uint32 SDL_VideoFlags = 0; |
| 100 | static SDL_GLContext *SDL_VideoContext = NULL; |
| 101 | static SDL_Surface *SDL_VideoIcon; |
| 102 | |
| 103 | static void |
| 104 | SDL_WM_SetCaption(const char *title, const char *icon) |
| 105 | { |
| 106 | if (wm_title) { |
| 107 | SDL_free(wm_title); |
| 108 | } |
| 109 | if (title) { |
| 110 | wm_title = SDL_strdup(title); |
| 111 | } else { |
| 112 | wm_title = NULL; |
| 113 | } |
| 114 | SDL_SetWindowTitle(SDL_VideoWindow, wm_title); |
| 115 | } |
| 116 | |
| 117 | static int |
| 118 | GetVideoDisplay() |
| 119 | { |
| 120 | const char *variable = SDL_getenv("SDL_VIDEO_FULLSCREEN_DISPLAY"); |
| 121 | if ( !variable ) { |
| 122 | variable = SDL_getenv("SDL_VIDEO_FULLSCREEN_HEAD"); |
| 123 | } |
| 124 | if ( variable ) { |
| 125 | return SDL_atoi(variable); |
| 126 | } else { |
| 127 | return 0; |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | static const SDL_VideoInfo * |
| 132 | SDL_GetVideoInfo(void) |
| 133 | { |
| 134 | static SDL_VideoInfo info; |
| 135 | SDL_DisplayMode mode; |
| 136 | |
| 137 | /* Memory leak, compatibility code, who cares? */ |
| 138 | if (!info.vfmt && SDL_GetDesktopDisplayMode(GetVideoDisplay(), &mode) == 0) { |
| 139 | info.vfmt = SDL_AllocFormat(mode.format); |
| 140 | info.current_w = mode.w; |
| 141 | info.current_h = mode.h; |
| 142 | } |
| 143 | return &info; |
| 144 | } |
| 145 | |
| 146 | static SDL_Rect ** |
| 147 | SDL_ListModes(const SDL_PixelFormat * format, Uint32 flags) |
| 148 | { |
| 149 | int i, nmodes; |
| 150 | SDL_Rect **modes; |
| 151 | |
| 152 | if (!initialized_video) { |
| 153 | return NULL; |
| 154 | } |
| 155 | |
| 156 | if (!(flags & SDL_FULLSCREEN)) { |
| 157 | return (SDL_Rect **) (-1); |
| 158 | } |
| 159 | |
| 160 | if (!format) { |
| 161 | format = SDL_GetVideoInfo()->vfmt; |
| 162 | } |
| 163 | |
| 164 | /* Memory leak, but this is a compatibility function, who cares? */ |
| 165 | nmodes = 0; |
| 166 | modes = NULL; |
| 167 | for (i = 0; i < SDL_GetNumDisplayModes(GetVideoDisplay()); ++i) { |
| 168 | SDL_DisplayMode mode; |
| 169 | int bpp; |
| 170 | |
| 171 | SDL_GetDisplayMode(GetVideoDisplay(), i, &mode); |
| 172 | if (!mode.w || !mode.h) { |
| 173 | return (SDL_Rect **) (-1); |
| 174 | } |
| 175 | |
| 176 | /* Copied from src/video/SDL_pixels.c:SDL_PixelFormatEnumToMasks */ |
| 177 | if (SDL_BYTESPERPIXEL(mode.format) <= 2) { |
| 178 | bpp = SDL_BITSPERPIXEL(mode.format); |
| 179 | } else { |
| 180 | bpp = SDL_BYTESPERPIXEL(mode.format) * 8; |
| 181 | } |
| 182 | |
| 183 | if (bpp != format->BitsPerPixel) { |
| 184 | continue; |
| 185 | } |
| 186 | if (nmodes > 0 && modes[nmodes - 1]->w == mode.w |
| 187 | && modes[nmodes - 1]->h == mode.h) { |
| 188 | continue; |
| 189 | } |
| 190 | |
| 191 | modes = (SDL_Rect**)SDL_realloc(modes, (nmodes + 2) * sizeof(*modes)); |
| 192 | if (!modes) { |
| 193 | return NULL; |
| 194 | } |
| 195 | modes[nmodes] = (SDL_Rect *) SDL_malloc(sizeof(SDL_Rect)); |
| 196 | if (!modes[nmodes]) { |
| 197 | return NULL; |
| 198 | } |
| 199 | modes[nmodes]->x = 0; |
| 200 | modes[nmodes]->y = 0; |
| 201 | modes[nmodes]->w = mode.w; |
| 202 | modes[nmodes]->h = mode.h; |
| 203 | ++nmodes; |
| 204 | } |
| 205 | if (modes) { |
| 206 | modes[nmodes] = NULL; |
| 207 | } |
| 208 | return modes; |
| 209 | } |
| 210 | |
| 211 | static void |
| 212 | SDL_UpdateRects(SDL_Surface * screen, int numrects, SDL_Rect * rects) |
| 213 | { |
| 214 | int i; |
| 215 | |
| 216 | if (screen == SDL_ShadowSurface) { |
| 217 | for (i = 0; i < numrects; ++i) { |
| 218 | SDL_BlitSurface(SDL_ShadowSurface, &rects[i], SDL_VideoSurface, |
| 219 | &rects[i]); |
| 220 | } |
| 221 | |
| 222 | /* Fall through to video surface update */ |
| 223 | screen = SDL_VideoSurface; |
| 224 | } |
| 225 | if (screen == SDL_VideoSurface) { |
| 226 | if (SDL_VideoViewport.x || SDL_VideoViewport.y) { |
| 227 | SDL_Rect *stackrects = SDL_stack_alloc(SDL_Rect, numrects); |
| 228 | SDL_Rect *stackrect; |
| 229 | const SDL_Rect *rect; |
| 230 | |
| 231 | /* Offset all the rectangles before updating */ |
| 232 | for (i = 0; i < numrects; ++i) { |
| 233 | rect = &rects[i]; |
| 234 | stackrect = &stackrects[i]; |
| 235 | stackrect->x = SDL_VideoViewport.x + rect->x; |
| 236 | stackrect->y = SDL_VideoViewport.y + rect->y; |
| 237 | stackrect->w = rect->w; |
| 238 | stackrect->h = rect->h; |
| 239 | } |
| 240 | SDL_UpdateWindowSurfaceRects(SDL_VideoWindow, stackrects, numrects); |
| 241 | SDL_stack_free(stackrects); |
| 242 | } else { |
| 243 | SDL_UpdateWindowSurfaceRects(SDL_VideoWindow, rects, numrects); |
| 244 | } |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | static void |
| 249 | SDL_UpdateRect(SDL_Surface * screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h) |
| 250 | { |
| 251 | if (screen) { |
| 252 | SDL_Rect rect; |
| 253 | |
| 254 | /* Fill the rectangle */ |
| 255 | rect.x = (int) x; |
| 256 | rect.y = (int) y; |
| 257 | rect.w = (int) (w ? w : screen->w); |
| 258 | rect.h = (int) (h ? h : screen->h); |
| 259 | SDL_UpdateRects(screen, 1, &rect); |
| 260 | } |
| 261 | } |
| 262 | |
| 263 | static int |
| 264 | SDL_Flip(SDL_Surface * screen) |
| 265 | { |
| 266 | SDL_UpdateRect(screen, 0, 0, 0, 0); |
| 267 | return 0; |
| 268 | } |
| 269 | |
| 270 | /* |
| 271 | * Calculate the pad-aligned scanline width of a surface |
| 272 | */ |
| 273 | static int |
| 274 | SDL_CalculatePitch(SDL_Surface * surface) |
| 275 | { |
| 276 | int pitch; |
| 277 | |
| 278 | /* Surface should be 4-byte aligned for speed */ |
| 279 | pitch = surface->w * surface->format->BytesPerPixel; |
| 280 | switch (surface->format->BitsPerPixel) { |
| 281 | case 1: |
| 282 | pitch = (pitch + 7) / 8; |
| 283 | break; |
| 284 | case 4: |
| 285 | pitch = (pitch + 1) / 2; |
| 286 | break; |
| 287 | default: |
| 288 | break; |
| 289 | } |
| 290 | pitch = (pitch + 3) & ~3; /* 4-byte aligning */ |
| 291 | return (pitch); |
| 292 | } |
| 293 | |
| 294 | static void |
| 295 | SDL_InvalidateMap(SDL_BlitMap * map) |
| 296 | { |
| 297 | if (!map) { |
| 298 | return; |
| 299 | } |
| 300 | if (map->dst) { |
| 301 | /* Release our reference to the surface - see the note below */ |
| 302 | if (--map->dst->refcount <= 0) { |
| 303 | SDL_FreeSurface(map->dst); |
| 304 | } |
| 305 | } |
| 306 | map->dst = NULL; |
| 307 | map->src_palette_version = 0; |
| 308 | map->dst_palette_version = 0; |
| 309 | if (map->info.table) { |
| 310 | SDL_free(map->info.table); |
| 311 | map->info.table = NULL; |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | static void |
| 316 | SDL_GL_SwapBuffers(void) |
| 317 | { |
| 318 | SDL_GL_SwapWindow(SDL_VideoWindow); |
| 319 | } |
| 320 | |
| 321 | static int |
| 322 | SDL_WM_ToggleFullScreen(SDL_Surface * surface) |
| 323 | { |
| 324 | int length; |
| 325 | void *pixels; |
| 326 | Uint8 *src, *dst; |
| 327 | int row; |
| 328 | int window_w; |
| 329 | int window_h; |
| 330 | |
| 331 | if (!SDL_PublicSurface) { |
| 332 | SDL_SetError("SDL_SetVideoMode() hasn't been called"); |
| 333 | return 0; |
| 334 | } |
| 335 | |
| 336 | /* Copy the old bits out */ |
| 337 | length = SDL_PublicSurface->w * SDL_PublicSurface->format->BytesPerPixel; |
| 338 | pixels = SDL_malloc(SDL_PublicSurface->h * length); |
| 339 | if (pixels && SDL_PublicSurface->pixels) { |
| 340 | src = (Uint8*)SDL_PublicSurface->pixels; |
| 341 | dst = (Uint8*)pixels; |
| 342 | for (row = 0; row < SDL_PublicSurface->h; ++row) { |
| 343 | SDL_memcpy(dst, src, length); |
| 344 | src += SDL_PublicSurface->pitch; |
| 345 | dst += length; |
| 346 | } |
| 347 | } |
| 348 | |
| 349 | /* Do the physical mode switch */ |
| 350 | if (SDL_GetWindowFlags(SDL_VideoWindow) & SDL_WINDOW_FULLSCREEN) { |
| 351 | if (SDL_SetWindowFullscreen(SDL_VideoWindow, 0) < 0) { |
| 352 | return 0; |
| 353 | } |
| 354 | SDL_PublicSurface->flags &= ~SDL_FULLSCREEN; |
| 355 | } else { |
| 356 | if (SDL_SetWindowFullscreen(SDL_VideoWindow, 1) < 0) { |
| 357 | return 0; |
| 358 | } |
| 359 | SDL_PublicSurface->flags |= SDL_FULLSCREEN; |
| 360 | } |
| 361 | |
| 362 | /* Recreate the screen surface */ |
| 363 | SDL_WindowSurface = SDL_GetWindowSurface(SDL_VideoWindow); |
| 364 | if (!SDL_WindowSurface) { |
| 365 | /* We're totally hosed... */ |
| 366 | return 0; |
| 367 | } |
| 368 | |
| 369 | /* Center the public surface in the window surface */ |
| 370 | SDL_GetWindowSize(SDL_VideoWindow, &window_w, &window_h); |
| 371 | SDL_VideoViewport.x = (window_w - SDL_VideoSurface->w)/2; |
| 372 | SDL_VideoViewport.y = (window_h - SDL_VideoSurface->h)/2; |
| 373 | SDL_VideoViewport.w = SDL_VideoSurface->w; |
| 374 | SDL_VideoViewport.h = SDL_VideoSurface->h; |
| 375 | |
| 376 | /* Do some shuffling behind the application's back if format changes */ |
| 377 | if (SDL_VideoSurface->format->format != SDL_WindowSurface->format->format) { |
| 378 | if (SDL_ShadowSurface) { |
| 379 | if (SDL_ShadowSurface->format->format == SDL_WindowSurface->format->format) { |
| 380 | /* Whee! We don't need a shadow surface anymore! */ |
| 381 | SDL_VideoSurface->flags &= ~SDL_DONTFREE; |
| 382 | SDL_FreeSurface(SDL_VideoSurface); |
| 383 | SDL_free(SDL_ShadowSurface->pixels); |
| 384 | SDL_VideoSurface = SDL_ShadowSurface; |
| 385 | SDL_VideoSurface->flags |= SDL_PREALLOC; |
| 386 | SDL_ShadowSurface = NULL; |
| 387 | } else { |
| 388 | /* No problem, just change the video surface format */ |
| 389 | SDL_FreeFormat(SDL_VideoSurface->format); |
| 390 | SDL_VideoSurface->format = SDL_WindowSurface->format; |
| 391 | SDL_VideoSurface->format->refcount++; |
| 392 | SDL_InvalidateMap(SDL_ShadowSurface->map); |
| 393 | } |
| 394 | } else { |
| 395 | /* We can make the video surface the shadow surface */ |
| 396 | SDL_ShadowSurface = SDL_VideoSurface; |
| 397 | SDL_ShadowSurface->pitch = SDL_CalculatePitch(SDL_ShadowSurface); |
| 398 | SDL_ShadowSurface->pixels = SDL_malloc(SDL_ShadowSurface->h * SDL_ShadowSurface->pitch); |
| 399 | if (!SDL_ShadowSurface->pixels) { |
| 400 | /* Uh oh, we're hosed */ |
| 401 | SDL_ShadowSurface = NULL; |
| 402 | return 0; |
| 403 | } |
| 404 | SDL_ShadowSurface->flags &= ~SDL_PREALLOC; |
| 405 | |
| 406 | SDL_VideoSurface = SDL_CreateRGBSurfaceFrom(NULL, 0, 0, 32, 0, 0, 0, 0, 0); |
| 407 | SDL_VideoSurface->flags = SDL_ShadowSurface->flags; |
| 408 | SDL_VideoSurface->flags |= SDL_PREALLOC; |
| 409 | SDL_FreeFormat(SDL_VideoSurface->format); |
| 410 | SDL_VideoSurface->format = SDL_WindowSurface->format; |
| 411 | SDL_VideoSurface->format->refcount++; |
| 412 | SDL_VideoSurface->w = SDL_ShadowSurface->w; |
| 413 | SDL_VideoSurface->h = SDL_ShadowSurface->h; |
| 414 | } |
| 415 | } |
| 416 | |
| 417 | /* Update the video surface */ |
| 418 | SDL_VideoSurface->pitch = SDL_WindowSurface->pitch; |
| 419 | SDL_VideoSurface->pixels = (void *)((Uint8 *)SDL_WindowSurface->pixels + |
| 420 | SDL_VideoViewport.y * SDL_VideoSurface->pitch + |
| 421 | SDL_VideoViewport.x * SDL_VideoSurface->format->BytesPerPixel); |
| 422 | SDL_SetClipRect(SDL_VideoSurface, NULL); |
| 423 | |
| 424 | /* Copy the old bits back */ |
| 425 | if (pixels) { |
| 426 | src = (Uint8*)pixels; |
| 427 | dst = (Uint8*)SDL_PublicSurface->pixels; |
| 428 | for (row = 0; row < SDL_PublicSurface->h; ++row) { |
| 429 | SDL_memcpy(dst, src, length); |
| 430 | src += length; |
| 431 | dst += SDL_PublicSurface->pitch; |
| 432 | } |
| 433 | SDL_Flip(SDL_PublicSurface); |
| 434 | SDL_free(pixels); |
| 435 | } |
| 436 | |
| 437 | /* We're done! */ |
| 438 | return 1; |
| 439 | } |
| 440 | |
| 441 | static void |
| 442 | ClearVideoSurface() |
| 443 | { |
| 444 | if (SDL_ShadowSurface) { |
| 445 | SDL_FillRect(SDL_ShadowSurface, NULL, |
| 446 | SDL_MapRGB(SDL_ShadowSurface->format, 0, 0, 0)); |
| 447 | } |
| 448 | SDL_FillRect(SDL_WindowSurface, NULL, 0); |
| 449 | SDL_UpdateWindowSurface(SDL_VideoWindow); |
| 450 | } |
| 451 | |
| 452 | static int |
| 453 | SDL_ResizeVideoMode(int width, int height, int bpp, Uint32 flags) |
| 454 | { |
| 455 | int w, h; |
| 456 | |
| 457 | /* We can't resize something we don't have... */ |
| 458 | if (!SDL_VideoSurface) { |
| 459 | return -1; |
| 460 | } |
| 461 | |
| 462 | /* We probably have to recreate the window in fullscreen mode */ |
| 463 | if (flags & SDL_FULLSCREEN) { |
| 464 | return -1; |
| 465 | } |
| 466 | |
| 467 | /* I don't think there's any change we can gracefully make in flags */ |
| 468 | if (flags != SDL_VideoFlags) { |
| 469 | return -1; |
| 470 | } |
| 471 | if (bpp != SDL_VideoSurface->format->BitsPerPixel) { |
| 472 | return -1; |
| 473 | } |
| 474 | |
| 475 | /* Resize the window */ |
| 476 | SDL_GetWindowSize(SDL_VideoWindow, &w, &h); |
| 477 | if (w != width || h != height) { |
| 478 | SDL_SetWindowSize(SDL_VideoWindow, width, height); |
| 479 | } |
| 480 | |
| 481 | /* If we're in OpenGL mode, just resize the stub surface and we're done! */ |
| 482 | if (flags & SDL_OPENGL) { |
| 483 | SDL_VideoSurface->w = width; |
| 484 | SDL_VideoSurface->h = height; |
| 485 | return 0; |
| 486 | } |
| 487 | |
| 488 | SDL_WindowSurface = SDL_GetWindowSurface(SDL_VideoWindow); |
| 489 | if (!SDL_WindowSurface) { |
| 490 | return -1; |
| 491 | } |
| 492 | if (SDL_VideoSurface->format != SDL_WindowSurface->format) { |
| 493 | return -1; |
| 494 | } |
| 495 | SDL_VideoSurface->w = width; |
| 496 | SDL_VideoSurface->h = height; |
| 497 | SDL_VideoSurface->pixels = SDL_WindowSurface->pixels; |
| 498 | SDL_VideoSurface->pitch = SDL_WindowSurface->pitch; |
| 499 | SDL_SetClipRect(SDL_VideoSurface, NULL); |
| 500 | |
| 501 | if (SDL_ShadowSurface) { |
| 502 | SDL_ShadowSurface->w = width; |
| 503 | SDL_ShadowSurface->h = height; |
| 504 | SDL_ShadowSurface->pitch = SDL_CalculatePitch(SDL_ShadowSurface); |
| 505 | SDL_ShadowSurface->pixels = |
| 506 | SDL_realloc(SDL_ShadowSurface->pixels, |
| 507 | SDL_ShadowSurface->h * SDL_ShadowSurface->pitch); |
| 508 | SDL_SetClipRect(SDL_ShadowSurface, NULL); |
| 509 | SDL_InvalidateMap(SDL_ShadowSurface->map); |
| 510 | } else { |
| 511 | SDL_PublicSurface = SDL_VideoSurface; |
| 512 | } |
| 513 | |
| 514 | ClearVideoSurface(); |
| 515 | |
| 516 | return 0; |
| 517 | } |
| 518 | |
| 519 | static int |
| 520 | SDL_CompatEventFilter(void *userdata, SDL_Event * event) |
| 521 | { |
| 522 | SDL_Event fake; |
| 523 | |
| 524 | switch (event->type) { |
| 525 | case SDL_WINDOWEVENT: |
| 526 | switch (event->window.event) { |
| 527 | case SDL_WINDOWEVENT_CLOSE: |
| 528 | fake.type = SDL_QUIT; |
| 529 | SDL_PushEvent(&fake); |
| 530 | break; |
| 531 | } |
| 532 | case SDL_TEXTINPUT: |
| 533 | { |
| 534 | /* FIXME: Generate an old style key repeat event if needed */ |
| 535 | //printf("TEXTINPUT: '%s'\n", event->text.text); |
| 536 | break; |
| 537 | } |
| 538 | case SDL_MOUSEMOTION: |
| 539 | { |
| 540 | event->motion.x -= SDL_VideoViewport.x; |
| 541 | event->motion.y -= SDL_VideoViewport.y; |
| 542 | break; |
| 543 | } |
| 544 | case SDL_MOUSEBUTTONDOWN: |
| 545 | case SDL_MOUSEBUTTONUP: |
| 546 | { |
| 547 | event->button.x -= SDL_VideoViewport.x; |
| 548 | event->button.y -= SDL_VideoViewport.y; |
| 549 | break; |
| 550 | } |
| 551 | case SDL_MOUSEWHEEL: |
| 552 | { |
| 553 | Uint8 button; |
| 554 | int x, y; |
| 555 | |
| 556 | if (event->wheel.y == 0) { |
| 557 | break; |
| 558 | } |
| 559 | |
| 560 | SDL_GetMouseState(&x, &y); |
| 561 | |
| 562 | if (event->wheel.y > 0) { |
| 563 | button = SDL_BUTTON_WHEELUP; |
| 564 | } else { |
| 565 | button = SDL_BUTTON_WHEELDOWN; |
| 566 | } |
| 567 | |
| 568 | fake.button.button = button; |
| 569 | fake.button.x = x; |
| 570 | fake.button.y = y; |
| 571 | fake.button.windowID = event->wheel.windowID; |
| 572 | |
| 573 | fake.type = SDL_MOUSEBUTTONDOWN; |
| 574 | fake.button.state = SDL_PRESSED; |
| 575 | SDL_PushEvent(&fake); |
| 576 | |
| 577 | fake.type = SDL_MOUSEBUTTONUP; |
| 578 | fake.button.state = SDL_RELEASED; |
| 579 | SDL_PushEvent(&fake); |
| 580 | break; |
| 581 | } |
| 582 | |
| 583 | } |
| 584 | return 1; |
| 585 | } |
| 586 | |
| 587 | static void |
| 588 | GetEnvironmentWindowPosition(int w, int h, int *x, int *y) |
| 589 | { |
| 590 | int display = GetVideoDisplay(); |
| 591 | const char *window = SDL_getenv("SDL_VIDEO_WINDOW_POS"); |
| 592 | const char *center = SDL_getenv("SDL_VIDEO_CENTERED"); |
| 593 | if (window) { |
| 594 | if (SDL_sscanf(window, "%d,%d", x, y) == 2) { |
| 595 | return; |
| 596 | } |
| 597 | if (SDL_strcmp(window, "center") == 0) { |
| 598 | center = window; |
| 599 | } |
| 600 | } |
| 601 | if (center) { |
| 602 | *x = SDL_WINDOWPOS_CENTERED_DISPLAY(display); |
| 603 | *y = SDL_WINDOWPOS_CENTERED_DISPLAY(display); |
| 604 | } |
| 605 | } |
| 606 | |
| 607 | static SDL_Surface * |
| 608 | SDL_SetVideoMode(int width, int height, int bpp, Uint32 flags) |
| 609 | { |
| 610 | SDL_DisplayMode desktop_mode; |
| 611 | int display = GetVideoDisplay(); |
| 612 | int window_x = SDL_WINDOWPOS_UNDEFINED_DISPLAY(display); |
| 613 | int window_y = SDL_WINDOWPOS_UNDEFINED_DISPLAY(display); |
| 614 | int window_w; |
| 615 | int window_h; |
| 616 | Uint32 window_flags; |
| 617 | Uint32 surface_flags; |
| 618 | |
| 619 | if (!initialized_video) { |
| 620 | if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE) < 0) { |
| 621 | return NULL; |
| 622 | } |
| 623 | initialized_video = 1; |
| 624 | } |
| 625 | |
| 626 | SDL_GetDesktopDisplayMode(display, &desktop_mode); |
| 627 | |
| 628 | if (width == 0) { |
| 629 | width = desktop_mode.w; |
| 630 | } |
| 631 | if (height == 0) { |
| 632 | height = desktop_mode.h; |
| 633 | } |
| 634 | if (bpp == 0) { |
| 635 | bpp = SDL_BITSPERPIXEL(desktop_mode.format); |
| 636 | } |
| 637 | |
| 638 | /* See if we can simply resize the existing window and surface */ |
| 639 | if (SDL_ResizeVideoMode(width, height, bpp, flags) == 0) { |
| 640 | return SDL_PublicSurface; |
| 641 | } |
| 642 | |
| 643 | /* Destroy existing window */ |
| 644 | SDL_PublicSurface = NULL; |
| 645 | if (SDL_ShadowSurface) { |
| 646 | SDL_ShadowSurface->flags &= ~SDL_DONTFREE; |
| 647 | SDL_FreeSurface(SDL_ShadowSurface); |
| 648 | SDL_ShadowSurface = NULL; |
| 649 | } |
| 650 | if (SDL_VideoSurface) { |
| 651 | SDL_VideoSurface->flags &= ~SDL_DONTFREE; |
| 652 | SDL_FreeSurface(SDL_VideoSurface); |
| 653 | SDL_VideoSurface = NULL; |
| 654 | } |
| 655 | if (SDL_VideoContext) { |
| 656 | /* SDL_GL_MakeCurrent(0, NULL); *//* Doesn't do anything */ |
| 657 | SDL_GL_DeleteContext(SDL_VideoContext); |
| 658 | SDL_VideoContext = NULL; |
| 659 | } |
| 660 | if (SDL_VideoWindow) { |
| 661 | SDL_GetWindowPosition(SDL_VideoWindow, &window_x, &window_y); |
| 662 | SDL_DestroyWindow(SDL_VideoWindow); |
| 663 | } |
| 664 | |
| 665 | /* Set up the event filter */ |
| 666 | if (!SDL_GetEventFilter(NULL, NULL)) { |
| 667 | SDL_SetEventFilter(SDL_CompatEventFilter, NULL); |
| 668 | } |
| 669 | |
| 670 | /* Create a new window */ |
| 671 | window_flags = SDL_WINDOW_SHOWN; |
| 672 | if (flags & SDL_FULLSCREEN) { |
| 673 | window_flags |= SDL_WINDOW_FULLSCREEN; |
| 674 | } |
| 675 | if (flags & SDL_OPENGL) { |
| 676 | window_flags |= SDL_WINDOW_OPENGL; |
| 677 | } |
| 678 | if (flags & SDL_RESIZABLE) { |
| 679 | window_flags |= SDL_WINDOW_RESIZABLE; |
| 680 | } |
| 681 | if (flags & SDL_NOFRAME) { |
| 682 | window_flags |= SDL_WINDOW_BORDERLESS; |
| 683 | } |
| 684 | GetEnvironmentWindowPosition(width, height, &window_x, &window_y); |
| 685 | SDL_VideoWindow = |
| 686 | SDL_CreateWindow(wm_title, window_x, window_y, width, height, |
| 687 | window_flags); |
| 688 | if (!SDL_VideoWindow) { |
| 689 | return NULL; |
| 690 | } |
| 691 | SDL_SetWindowIcon(SDL_VideoWindow, SDL_VideoIcon); |
| 692 | |
| 693 | window_flags = SDL_GetWindowFlags(SDL_VideoWindow); |
| 694 | surface_flags = 0; |
| 695 | if (window_flags & SDL_WINDOW_FULLSCREEN) { |
| 696 | surface_flags |= SDL_FULLSCREEN; |
| 697 | } |
| 698 | if ((window_flags & SDL_WINDOW_OPENGL) && (flags & SDL_OPENGL)) { |
| 699 | surface_flags |= SDL_OPENGL; |
| 700 | } |
| 701 | if (window_flags & SDL_WINDOW_RESIZABLE) { |
| 702 | surface_flags |= SDL_RESIZABLE; |
| 703 | } |
| 704 | if (window_flags & SDL_WINDOW_BORDERLESS) { |
| 705 | surface_flags |= SDL_NOFRAME; |
| 706 | } |
| 707 | |
| 708 | SDL_VideoFlags = flags; |
| 709 | |
| 710 | /* If we're in OpenGL mode, just create a stub surface and we're done! */ |
| 711 | if (flags & SDL_OPENGL) { |
| 712 | SDL_VideoContext = (SDL_GLContext *)SDL_GL_CreateContext(SDL_VideoWindow); |
| 713 | if (!SDL_VideoContext) { |
| 714 | return NULL; |
| 715 | } |
| 716 | if (SDL_GL_MakeCurrent(SDL_VideoWindow, SDL_VideoContext) < 0) { |
| 717 | return NULL; |
| 718 | } |
| 719 | SDL_VideoSurface = |
| 720 | SDL_CreateRGBSurfaceFrom(NULL, width, height, bpp, 0, 0, 0, 0, 0); |
| 721 | if (!SDL_VideoSurface) { |
| 722 | return NULL; |
| 723 | } |
| 724 | SDL_VideoSurface->flags |= surface_flags; |
| 725 | SDL_PublicSurface = SDL_VideoSurface; |
| 726 | return SDL_PublicSurface; |
| 727 | } |
| 728 | |
| 729 | /* Create the screen surface */ |
| 730 | SDL_WindowSurface = SDL_GetWindowSurface(SDL_VideoWindow); |
| 731 | if (!SDL_WindowSurface) { |
| 732 | return NULL; |
| 733 | } |
| 734 | |
| 735 | /* Center the public surface in the window surface */ |
| 736 | SDL_GetWindowSize(SDL_VideoWindow, &window_w, &window_h); |
| 737 | SDL_VideoViewport.x = (window_w - width)/2; |
| 738 | SDL_VideoViewport.y = (window_h - height)/2; |
| 739 | SDL_VideoViewport.w = width; |
| 740 | SDL_VideoViewport.h = height; |
| 741 | |
| 742 | SDL_VideoSurface = SDL_CreateRGBSurfaceFrom(NULL, 0, 0, 32, 0, 0, 0, 0, 0); |
| 743 | SDL_VideoSurface->flags |= surface_flags; |
| 744 | SDL_VideoSurface->flags |= SDL_DONTFREE; |
| 745 | SDL_FreeFormat(SDL_VideoSurface->format); |
| 746 | SDL_VideoSurface->format = SDL_WindowSurface->format; |
| 747 | SDL_VideoSurface->format->refcount++; |
| 748 | SDL_VideoSurface->w = width; |
| 749 | SDL_VideoSurface->h = height; |
| 750 | SDL_VideoSurface->pitch = SDL_WindowSurface->pitch; |
| 751 | SDL_VideoSurface->pixels = (void *)((Uint8 *)SDL_WindowSurface->pixels + |
| 752 | SDL_VideoViewport.y * SDL_VideoSurface->pitch + |
| 753 | SDL_VideoViewport.x * SDL_VideoSurface->format->BytesPerPixel); |
| 754 | SDL_SetClipRect(SDL_VideoSurface, NULL); |
| 755 | |
| 756 | /* Create a shadow surface if necessary */ |
| 757 | if ((bpp != SDL_VideoSurface->format->BitsPerPixel) |
| 758 | && !(flags & SDL_ANYFORMAT)) { |
| 759 | SDL_ShadowSurface = |
| 760 | SDL_CreateRGBSurface(0, width, height, bpp, 0, 0, 0, 0); |
| 761 | if (!SDL_ShadowSurface) { |
| 762 | return NULL; |
| 763 | } |
| 764 | SDL_ShadowSurface->flags |= surface_flags; |
| 765 | SDL_ShadowSurface->flags |= SDL_DONTFREE; |
| 766 | |
| 767 | /* 8-bit SDL_ShadowSurface surfaces report that they have exclusive palette */ |
| 768 | if (SDL_ShadowSurface->format->palette) { |
| 769 | SDL_ShadowSurface->flags |= SDL_HWPALETTE; |
| 770 | //TODO SDL_DitherColors(SDL_ShadowSurface->format->palette->colors, |
| 771 | // SDL_ShadowSurface->format->BitsPerPixel); |
| 772 | } |
| 773 | SDL_FillRect(SDL_ShadowSurface, NULL, |
| 774 | SDL_MapRGB(SDL_ShadowSurface->format, 0, 0, 0)); |
| 775 | } |
| 776 | SDL_PublicSurface = |
| 777 | (SDL_ShadowSurface ? SDL_ShadowSurface : SDL_VideoSurface); |
| 778 | |
| 779 | ClearVideoSurface(); |
| 780 | |
| 781 | /* We're finally done! */ |
| 782 | return SDL_PublicSurface; |
| 783 | } |