e14743d1 |
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 | } |