| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 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 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | |
| 22 | Micah Dowty |
| 23 | micahjd@users.sourceforge.net |
| 24 | */ |
| 25 | #include "SDL_config.h" |
| 26 | |
| 27 | #include "SDL_video.h" |
| 28 | #include "SDL_mouse.h" |
| 29 | #include "../SDL_sysvideo.h" |
| 30 | #include "../SDL_pixels_c.h" |
| 31 | #include "../../events/SDL_events_c.h" |
| 32 | |
| 33 | #include "SDL_pgvideo.h" |
| 34 | #include "SDL_pgevents_c.h" |
| 35 | |
| 36 | #define PGVID_DRIVER_NAME "picogui" |
| 37 | |
| 38 | /* Initialization/Query functions */ |
| 39 | static int PG_VideoInit(_THIS, SDL_PixelFormat *vformat); |
| 40 | static SDL_Rect **PG_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); |
| 41 | static SDL_Surface *PG_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); |
| 42 | static int PG_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors); |
| 43 | static void PG_VideoQuit(_THIS); |
| 44 | |
| 45 | /* Hardware surface functions */ |
| 46 | static int PG_AllocHWSurface(_THIS, SDL_Surface *surface); |
| 47 | static int PG_LockHWSurface(_THIS, SDL_Surface *surface); |
| 48 | static void PG_UnlockHWSurface(_THIS, SDL_Surface *surface); |
| 49 | static void PG_FreeHWSurface(_THIS, SDL_Surface *surface); |
| 50 | |
| 51 | /* etc. */ |
| 52 | static void PG_UpdateRects(_THIS, int numrects, SDL_Rect *rects); |
| 53 | |
| 54 | // The implementation dependent data for the window manager cursor |
| 55 | struct WMcursor { |
| 56 | /* Our cursor is a PicoGUI theme */ |
| 57 | pghandle theme; |
| 58 | } ; |
| 59 | |
| 60 | /* WM functions */ |
| 61 | void PG_SetCaption(_THIS, const char *title, const char *icon); |
| 62 | WMcursor * PG_CreateWMCursor (_THIS,Uint8 * data, Uint8 * mask, |
| 63 | int w, int h, int hot_x, int hot_y); |
| 64 | void PG_FreeWMCursor (_THIS, WMcursor * cursor); |
| 65 | void PG_WarpWMCursor(_THIS, Uint16 x, Uint16 y); |
| 66 | int PG_ShowWMCursor (_THIS, WMcursor * cursor); |
| 67 | |
| 68 | /* PicoGUI driver bootstrap functions */ |
| 69 | |
| 70 | static int PG_Available(void) |
| 71 | { |
| 72 | /* FIXME: The current client lib doesn't give a way to see if the picogui |
| 73 | * server is reachable without causing a fatal error if it isn't. |
| 74 | * This should be fixed in cli_c2, but until then assume we can |
| 75 | * connect. Since more common drivers like X11 are probed first anyway, |
| 76 | * this shouldn't be a huge problem. |
| 77 | */ |
| 78 | return(1); |
| 79 | } |
| 80 | |
| 81 | static void PG_DeleteDevice(SDL_VideoDevice *device) |
| 82 | { |
| 83 | SDL_free(device->hidden); |
| 84 | SDL_free(device); |
| 85 | } |
| 86 | |
| 87 | static SDL_VideoDevice *PG_CreateDevice(int devindex) |
| 88 | { |
| 89 | SDL_VideoDevice *device; |
| 90 | |
| 91 | /* Initialize all variables that we clean on shutdown */ |
| 92 | device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice)); |
| 93 | if ( device ) { |
| 94 | SDL_memset(device, 0, (sizeof *device)); |
| 95 | device->hidden = (struct SDL_PrivateVideoData *) |
| 96 | SDL_malloc((sizeof *device->hidden)); |
| 97 | } |
| 98 | if ( (device == NULL) || (device->hidden == NULL) ) { |
| 99 | SDL_OutOfMemory(); |
| 100 | if ( device ) { |
| 101 | SDL_free(device); |
| 102 | } |
| 103 | return(0); |
| 104 | } |
| 105 | SDL_memset(device->hidden, 0, (sizeof *device->hidden)); |
| 106 | |
| 107 | /* Set the function pointers */ |
| 108 | device->VideoInit = PG_VideoInit; |
| 109 | device->ListModes = PG_ListModes; |
| 110 | device->SetVideoMode = PG_SetVideoMode; |
| 111 | device->CreateYUVOverlay = NULL; |
| 112 | device->SetColors = PG_SetColors; |
| 113 | device->UpdateRects = PG_UpdateRects; |
| 114 | device->VideoQuit = PG_VideoQuit; |
| 115 | device->AllocHWSurface = PG_AllocHWSurface; |
| 116 | device->CheckHWBlit = NULL; |
| 117 | device->FillHWRect = NULL; |
| 118 | device->SetHWColorKey = NULL; |
| 119 | device->SetHWAlpha = NULL; |
| 120 | device->LockHWSurface = PG_LockHWSurface; |
| 121 | device->UnlockHWSurface = PG_UnlockHWSurface; |
| 122 | device->FlipHWSurface = NULL; |
| 123 | device->FreeHWSurface = PG_FreeHWSurface; |
| 124 | device->SetCaption = PG_SetCaption; |
| 125 | device->SetIcon = NULL; |
| 126 | device->IconifyWindow = NULL; |
| 127 | device->GrabInput = NULL; |
| 128 | |
| 129 | device->PumpEvents = PG_PumpEvents; |
| 130 | device->InitOSKeymap = PG_InitOSKeymap; |
| 131 | |
| 132 | device->ShowWMCursor = PG_ShowWMCursor; |
| 133 | device->CreateWMCursor = PG_CreateWMCursor; |
| 134 | device->FreeWMCursor = PG_FreeWMCursor; |
| 135 | device->WarpWMCursor = PG_WarpWMCursor; |
| 136 | |
| 137 | device->free = PG_DeleteDevice; |
| 138 | |
| 139 | return device; |
| 140 | } |
| 141 | |
| 142 | VideoBootStrap PG_bootstrap = { |
| 143 | PGVID_DRIVER_NAME, "PicoGUI SDL driver", |
| 144 | PG_Available, PG_CreateDevice |
| 145 | }; |
| 146 | |
| 147 | |
| 148 | int PG_VideoInit(_THIS, SDL_PixelFormat *vformat) |
| 149 | { |
| 150 | /* Connect to the PicoGUI server. No way to process command line args yet, |
| 151 | * but since this is based on SHM it's not important to be able to specify |
| 152 | * a remote PicoGUI server. |
| 153 | * |
| 154 | * FIXME: Another nitpick about the current client lib is there's no |
| 155 | * clean way to indicate that command line args are not available. |
| 156 | */ |
| 157 | pgInit(0,(char**)""); |
| 158 | this->hidden->mi = *pgGetVideoMode(); |
| 159 | |
| 160 | /* Create a picogui application and canvas. We'll populate the canvas later. */ |
| 161 | this->hidden->wApp = pgRegisterApp(PG_APP_NORMAL,"SDL",0); |
| 162 | this->hidden->wCanvas = pgNewWidget(PG_WIDGET_CANVAS,0,0); |
| 163 | pgSetWidget(PGDEFAULT, |
| 164 | PG_WP_SIDE, PG_S_ALL, |
| 165 | 0); |
| 166 | |
| 167 | PG_InitEvents(this); |
| 168 | |
| 169 | /* Determine the current screen size */ |
| 170 | this->info.current_w = this->hidden->mi.lxres; |
| 171 | this->info.current_h = this->hidden->mi.lyres; |
| 172 | |
| 173 | /* Determine the screen depth. |
| 174 | * We change this during the SDL_SetVideoMode implementation... |
| 175 | * Round up to the nearest Bytes per pixel |
| 176 | */ |
| 177 | vformat->BitsPerPixel = this->hidden->mi.bpp; |
| 178 | vformat->BytesPerPixel = this->hidden->mi.bpp >> 3; |
| 179 | if (this->hidden->mi.bpp & 7) |
| 180 | vformat->BytesPerPixel++; |
| 181 | |
| 182 | /* We're done! */ |
| 183 | return(0); |
| 184 | } |
| 185 | |
| 186 | SDL_Rect **PG_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) |
| 187 | { |
| 188 | return (SDL_Rect **) -1; |
| 189 | } |
| 190 | |
| 191 | SDL_Surface *PG_SetVideoMode(_THIS, SDL_Surface *current, |
| 192 | int width, int height, int bpp, Uint32 flags) |
| 193 | { |
| 194 | if ( this->hidden->bitmap ) { |
| 195 | /* Free old bitmap */ |
| 196 | if (current->pixels) { |
| 197 | shmdt(current->pixels); |
| 198 | current->pixels = NULL; |
| 199 | } |
| 200 | pgDelete(this->hidden->bitmap); |
| 201 | } |
| 202 | |
| 203 | /* Allocate the new pixel format for the screen */ |
| 204 | if ( ! SDL_ReallocFormat(current, bpp, 0, 0, 0, 0) ) { |
| 205 | SDL_SetError("Couldn't allocate new pixel format for requested mode"); |
| 206 | return(NULL); |
| 207 | } |
| 208 | |
| 209 | /* Create a new picogui bitmap */ |
| 210 | this->hidden->bitmap = pgCreateBitmap(width,height); |
| 211 | this->hidden->shm = *pgMakeSHMBitmap(this->hidden->bitmap); |
| 212 | current->pixels = shmat(shmget(this->hidden->shm.shm_key, |
| 213 | this->hidden->shm.shm_length,0),NULL,0); |
| 214 | |
| 215 | /* Reset the canvas, and draw persistent and incremental grops. |
| 216 | * Use mapping and offsets to center it. |
| 217 | */ |
| 218 | |
| 219 | pgWriteCmd(this->hidden->wCanvas, PGCANVAS_NUKE, 0); |
| 220 | |
| 221 | /* 0. Set the source position during incremental rendering |
| 222 | */ |
| 223 | pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 5, PG_GROP_SETSRC,0,0,0,0); |
| 224 | pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROPFLAGS, 1, PG_GROPF_INCREMENTAL); |
| 225 | |
| 226 | /* 1. Incremental bitmap rendering |
| 227 | */ |
| 228 | pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 6, PG_GROP_BITMAP, |
| 229 | 0,0,0,0,this->hidden->bitmap); |
| 230 | pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROPFLAGS, 1, PG_GROPF_INCREMENTAL); |
| 231 | |
| 232 | /* 2. Normal bitmap rendering |
| 233 | */ |
| 234 | pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 6, PG_GROP_BITMAP, |
| 235 | 0,0,this->hidden->shm.width,this->hidden->shm.height,this->hidden->bitmap); |
| 236 | |
| 237 | /* Set up the new mode framebuffer */ |
| 238 | current->flags = 0; |
| 239 | current->w = this->hidden->shm.width; |
| 240 | current->h = this->hidden->shm.height; |
| 241 | current->pitch = this->hidden->shm.pitch; |
| 242 | |
| 243 | /* Set up pixel format */ |
| 244 | current->format->BitsPerPixel = this->hidden->shm.bpp; |
| 245 | current->format->BytesPerPixel = this->hidden->shm.bpp >> 3; |
| 246 | if (this->hidden->shm.bpp & 7) |
| 247 | current->format->BytesPerPixel++; |
| 248 | current->format->palette = NULL; |
| 249 | current->format->Rmask = this->hidden->shm.red_mask; |
| 250 | current->format->Gmask = this->hidden->shm.green_mask; |
| 251 | current->format->Bmask = this->hidden->shm.blue_mask; |
| 252 | current->format->Amask = this->hidden->shm.alpha_mask; |
| 253 | current->format->Rshift = this->hidden->shm.red_shift; |
| 254 | current->format->Gshift = this->hidden->shm.green_shift; |
| 255 | current->format->Bshift = this->hidden->shm.blue_shift; |
| 256 | current->format->Ashift = this->hidden->shm.alpha_shift; |
| 257 | current->format->Rloss = 8 - this->hidden->shm.red_length; |
| 258 | current->format->Gloss = 8 - this->hidden->shm.green_length; |
| 259 | current->format->Bloss = 8 - this->hidden->shm.blue_length; |
| 260 | current->format->Aloss = 8 - this->hidden->shm.alpha_length; |
| 261 | |
| 262 | /* Draw the app */ |
| 263 | pgUpdate(); |
| 264 | |
| 265 | /* We're done */ |
| 266 | return(current); |
| 267 | } |
| 268 | |
| 269 | /* We don't actually allow hardware surfaces other than the main one */ |
| 270 | static int PG_AllocHWSurface(_THIS, SDL_Surface *surface) |
| 271 | { |
| 272 | return(-1); |
| 273 | } |
| 274 | static void PG_FreeHWSurface(_THIS, SDL_Surface *surface) |
| 275 | { |
| 276 | return; |
| 277 | } |
| 278 | |
| 279 | /* We need to wait for vertical retrace on page flipped displays */ |
| 280 | static int PG_LockHWSurface(_THIS, SDL_Surface *surface) |
| 281 | { |
| 282 | return(0); |
| 283 | } |
| 284 | |
| 285 | static void PG_UnlockHWSurface(_THIS, SDL_Surface *surface) |
| 286 | { |
| 287 | return; |
| 288 | } |
| 289 | |
| 290 | static void PG_UpdateRects(_THIS, int numrects, SDL_Rect *rects) |
| 291 | { |
| 292 | int i; |
| 293 | |
| 294 | for (i = 0; i < numrects; i++) { |
| 295 | if (rects[i].w <= 0 || rects[i].h <= 0) |
| 296 | continue; |
| 297 | |
| 298 | /* Schedule an incremental update for this rectangle, using |
| 299 | * the canvas gropnodes we've loaded beforehand. |
| 300 | */ |
| 301 | pgWriteCmd(this->hidden->wCanvas, PGCANVAS_FINDGROP, 1, 0); |
| 302 | pgWriteCmd(this->hidden->wCanvas, PGCANVAS_MOVEGROP, 4, |
| 303 | rects[i].x, rects[i].y, |
| 304 | rects[i].w, rects[i].h); |
| 305 | pgWriteCmd(this->hidden->wCanvas, PGCANVAS_FINDGROP, 1, 1); |
| 306 | pgWriteCmd(this->hidden->wCanvas, PGCANVAS_MOVEGROP, 4, |
| 307 | rects[i].x, rects[i].y, |
| 308 | rects[i].w, rects[i].h); |
| 309 | |
| 310 | /* Go perform the update */ |
| 311 | pgWriteCmd(this->hidden->wCanvas, PGCANVAS_INCREMENTAL, 0); |
| 312 | pgSubUpdate(this->hidden->wCanvas); |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | int PG_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) |
| 317 | { |
| 318 | /* do nothing of note. */ |
| 319 | return(1); |
| 320 | } |
| 321 | |
| 322 | /* Note: If we are terminated, this could be called in the middle of |
| 323 | another SDL video routine -- notably UpdateRects. |
| 324 | */ |
| 325 | void PG_VideoQuit(_THIS) |
| 326 | { |
| 327 | if (this->screen->pixels != NULL) |
| 328 | { |
| 329 | shmdt(this->screen->pixels); |
| 330 | this->screen->pixels = NULL; |
| 331 | pgDelete(this->hidden->bitmap); |
| 332 | } |
| 333 | pgDelete(this->hidden->wCanvas); |
| 334 | pgDelete(this->hidden->wApp); |
| 335 | } |
| 336 | |
| 337 | void PG_SetCaption(_THIS, const char *title, const char *icon) |
| 338 | { |
| 339 | if (title != NULL) |
| 340 | pgReplaceText(this->hidden->wApp, title); |
| 341 | pgUpdate(); |
| 342 | } |
| 343 | |
| 344 | /* FIXME: The cursor stuff isn't implemented yet! */ |
| 345 | |
| 346 | WMcursor * PG_CreateWMCursor (_THIS,Uint8 * data, Uint8 * mask, |
| 347 | int w, int h, int hot_x, int hot_y) |
| 348 | { |
| 349 | static WMcursor dummy; |
| 350 | return &dummy; |
| 351 | } |
| 352 | |
| 353 | void PG_FreeWMCursor (_THIS, WMcursor * cursor) |
| 354 | { |
| 355 | } |
| 356 | |
| 357 | void PG_WarpWMCursor(_THIS, Uint16 x, Uint16 y) |
| 358 | { |
| 359 | } |
| 360 | |
| 361 | int PG_ShowWMCursor (_THIS, WMcursor * cursor) |
| 362 | { |
| 363 | return 1; |
| 364 | } |