1 /* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2012 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 (at) libsdl.org 21 22 Micah Dowty 23 micahjd (at) 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 } 365
