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comparison src/video/picogui/SDL_pgvideo.c @ 433:706de3956894

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Added initial support for PicoGUI (thanks Micah!)
author Sam Lantinga <slouken@libsdl.org>
date Thu, 01 Aug 2002 23:24:13 +0000
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children b8d311d90021
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432:80a35d43a58f 433:706de3956894
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
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
20 slouken@libsdl.org
21
22 Micah Dowty
23 micahjd@users.sourceforge.net
24 */
25
26 #ifdef SAVE_RCSID
27 static char rcsid =
28 "@(#) $Id$";
29 #endif
30
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34
35 #include "SDL.h"
36 #include "SDL_error.h"
37 #include "SDL_video.h"
38 #include "SDL_mouse.h"
39 #include "SDL_sysvideo.h"
40 #include "SDL_pixels_c.h"
41 #include "SDL_events_c.h"
42
43 #include "SDL_pgvideo.h"
44 #include "SDL_pgevents_c.h"
45
46 #define PGVID_DRIVER_NAME "picogui"
47
48 /* Initialization/Query functions */
49 static int PG_VideoInit(_THIS, SDL_PixelFormat *vformat);
50 static SDL_Rect **PG_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
51 static SDL_Surface *PG_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
52 static int PG_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors);
53 static void PG_VideoQuit(_THIS);
54
55 /* Hardware surface functions */
56 static int PG_AllocHWSurface(_THIS, SDL_Surface *surface);
57 static int PG_LockHWSurface(_THIS, SDL_Surface *surface);
58 static void PG_UnlockHWSurface(_THIS, SDL_Surface *surface);
59 static void PG_FreeHWSurface(_THIS, SDL_Surface *surface);
60
61 /* etc. */
62 static void PG_UpdateRects(_THIS, int numrects, SDL_Rect *rects);
63
64 // The implementation dependent data for the window manager cursor
65 struct WMcursor {
66 /* Our cursor is a PicoGUI theme */
67 pghandle theme;
68 } ;
69
70 /* WM functions */
71 void PG_SetCaption(_THIS, const char *title, const char *icon);
72 WMcursor * PG_CreateWMCursor (_THIS,Uint8 * data, Uint8 * mask,
73 int w, int h, int hot_x, int hot_y);
74 void PG_FreeWMCursor (_THIS, WMcursor * cursor);
75 void PG_WarpWMCursor(_THIS, Uint16 x, Uint16 y);
76 int PG_ShowWMCursor (_THIS, WMcursor * cursor);
77
78 /* PicoGUI driver bootstrap functions */
79
80 static int PG_Available(void)
81 {
82 /* FIXME: The current client lib doesn't give a way to see if the picogui
83 * server is reachable without causing a fatal error if it isn't.
84 * This should be fixed in cli_c2, but until then assume we can
85 * connect. Since more common drivers like X11 are probed first anyway,
86 * this shouldn't be a huge problem.
87 */
88 return(1);
89 }
90
91 static void PG_DeleteDevice(SDL_VideoDevice *device)
92 {
93 free(device->hidden);
94 free(device);
95 }
96
97 static SDL_VideoDevice *PG_CreateDevice(int devindex)
98 {
99 SDL_VideoDevice *device;
100
101 /* Initialize all variables that we clean on shutdown */
102 device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice));
103 if ( device ) {
104 memset(device, 0, (sizeof *device));
105 device->hidden = (struct SDL_PrivateVideoData *)
106 malloc((sizeof *device->hidden));
107 }
108 if ( (device == NULL) || (device->hidden == NULL) ) {
109 SDL_OutOfMemory();
110 if ( device ) {
111 free(device);
112 }
113 return(0);
114 }
115 memset(device->hidden, 0, (sizeof *device->hidden));
116
117 /* Set the function pointers */
118 device->VideoInit = PG_VideoInit;
119 device->ListModes = PG_ListModes;
120 device->SetVideoMode = PG_SetVideoMode;
121 device->CreateYUVOverlay = NULL;
122 device->SetColors = PG_SetColors;
123 device->UpdateRects = PG_UpdateRects;
124 device->VideoQuit = PG_VideoQuit;
125 device->AllocHWSurface = PG_AllocHWSurface;
126 device->CheckHWBlit = NULL;
127 device->FillHWRect = NULL;
128 device->SetHWColorKey = NULL;
129 device->SetHWAlpha = NULL;
130 device->LockHWSurface = PG_LockHWSurface;
131 device->UnlockHWSurface = PG_UnlockHWSurface;
132 device->FlipHWSurface = NULL;
133 device->FreeHWSurface = PG_FreeHWSurface;
134 device->SetCaption = PG_SetCaption;
135 device->SetIcon = NULL;
136 device->IconifyWindow = NULL;
137 device->GrabInput = NULL;
138
139 device->PumpEvents = PG_PumpEvents;
140 device->InitOSKeymap = PG_InitOSKeymap;
141
142 device->ShowWMCursor = PG_ShowWMCursor;
143 device->CreateWMCursor = PG_CreateWMCursor;
144 device->FreeWMCursor = PG_FreeWMCursor;
145 device->WarpWMCursor = PG_WarpWMCursor;
146
147 device->free = PG_DeleteDevice;
148
149 return device;
150 }
151
152 VideoBootStrap PG_bootstrap = {
153 PGVID_DRIVER_NAME, "PicoGUI SDL driver",
154 PG_Available, PG_CreateDevice
155 };
156
157
158 int PG_VideoInit(_THIS, SDL_PixelFormat *vformat)
159 {
160 /* Connect to the PicoGUI server. No way to process command line args yet,
161 * but since this is based on SHM it's not important to be able to specify
162 * a remote PicoGUI server.
163 *
164 * FIXME: Another nitpick about the current client lib is there's no
165 * clean way to indicate that command line args are not available.
166 */
167 pgInit(0,(char**)"");
168 this->hidden->mi = *pgGetVideoMode();
169
170 /* Create a picogui application and canvas. We'll populate the canvas later. */
171 this->hidden->wApp = pgRegisterApp(PG_APP_NORMAL,"SDL",0);
172 this->hidden->wCanvas = pgNewWidget(PG_WIDGET_CANVAS,0,0);
173 pgSetWidget(PGDEFAULT,
174 PG_WP_SIDE, PG_S_ALL,
175 0);
176
177 PG_InitEvents(this);
178
179 /* Determine the screen depth.
180 * We change this during the SDL_SetVideoMode implementation...
181 * Round up to the nearest Bytes per pixel
182 */
183 vformat->BitsPerPixel = this->hidden->mi.bpp;
184 vformat->BytesPerPixel = this->hidden->mi.bpp >> 3;
185 if (this->hidden->mi.bpp & 7)
186 vformat->BytesPerPixel++;
187
188 /* We're done! */
189 return(0);
190 }
191
192 SDL_Rect **PG_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
193 {
194 return (SDL_Rect **) -1;
195 }
196
197 SDL_Surface *PG_SetVideoMode(_THIS, SDL_Surface *current,
198 int width, int height, int bpp, Uint32 flags)
199 {
200 if ( this->hidden->bitmap ) {
201 /* Free old bitmap */
202 if (current->pixels) {
203 shmdt(current->pixels);
204 current->pixels = NULL;
205 }
206 pgDelete(this->hidden->bitmap);
207 }
208
209 /* Allocate the new pixel format for the screen */
210 if ( ! SDL_ReallocFormat(current, bpp, 0, 0, 0, 0) ) {
211 SDL_SetError("Couldn't allocate new pixel format for requested mode");
212 return(NULL);
213 }
214
215 /* Create a new picogui bitmap */
216 this->hidden->bitmap = pgCreateBitmap(width,height);
217 this->hidden->shm = *pgMakeSHMBitmap(this->hidden->bitmap);
218 current->pixels = shmat(shmget(this->hidden->shm.shm_key,
219 this->hidden->shm.shm_length,0),NULL,0);
220
221 /* Reset the canvas, and draw persistent and incremental grops.
222 * Use mapping and offsets to center it.
223 */
224
225 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_NUKE, 0);
226
227 /* 0. Set the source position during incremental rendering
228 */
229 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 5, PG_GROP_SETSRC,0,0,0,0);
230 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROPFLAGS, 1, PG_GROPF_INCREMENTAL);
231
232 /* 1. Incremental bitmap rendering
233 */
234 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 6, PG_GROP_BITMAP,
235 0,0,0,0,this->hidden->bitmap);
236 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROPFLAGS, 1, PG_GROPF_INCREMENTAL);
237
238 /* 2. Normal bitmap rendering
239 */
240 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 6, PG_GROP_BITMAP,
241 0,0,this->hidden->shm.width,this->hidden->shm.height,this->hidden->bitmap);
242
243 /* Set up the new mode framebuffer */
244 current->flags = 0;
245 current->w = this->hidden->shm.width;
246 current->h = this->hidden->shm.height;
247 current->pitch = this->hidden->shm.pitch;
248
249 /* Set up pixel format */
250 current->format->BitsPerPixel = this->hidden->shm.bpp;
251 current->format->BytesPerPixel = this->hidden->shm.bpp >> 3;
252 if (this->hidden->shm.bpp & 7)
253 current->format->BytesPerPixel++;
254 current->format->palette = NULL;
255 current->format->Rmask = this->hidden->shm.red_mask;
256 current->format->Gmask = this->hidden->shm.green_mask;
257 current->format->Bmask = this->hidden->shm.blue_mask;
258 current->format->Amask = this->hidden->shm.alpha_mask;
259 current->format->Rshift = this->hidden->shm.red_shift;
260 current->format->Gshift = this->hidden->shm.green_shift;
261 current->format->Bshift = this->hidden->shm.blue_shift;
262 current->format->Ashift = this->hidden->shm.alpha_shift;
263 current->format->Rloss = 8 - this->hidden->shm.red_length;
264 current->format->Gloss = 8 - this->hidden->shm.green_length;
265 current->format->Bloss = 8 - this->hidden->shm.blue_length;
266 current->format->Aloss = 8 - this->hidden->shm.alpha_length;
267
268 /* Draw the app */
269 pgUpdate();
270
271 /* We're done */
272 return(current);
273 }
274
275 /* We don't actually allow hardware surfaces other than the main one */
276 static int PG_AllocHWSurface(_THIS, SDL_Surface *surface)
277 {
278 return(-1);
279 }
280 static void PG_FreeHWSurface(_THIS, SDL_Surface *surface)
281 {
282 return;
283 }
284
285 /* We need to wait for vertical retrace on page flipped displays */
286 static int PG_LockHWSurface(_THIS, SDL_Surface *surface)
287 {
288 return(0);
289 }
290
291 static void PG_UnlockHWSurface(_THIS, SDL_Surface *surface)
292 {
293 return;
294 }
295
296 static void PG_UpdateRects(_THIS, int numrects, SDL_Rect *rects)
297 {
298 int i;
299
300 for (i = 0; i < numrects; i++) {
301 if (rects[i].w <= 0 || rects[i].h <= 0)
302 continue;
303
304 /* Schedule an incremental update for this rectangle, using
305 * the canvas gropnodes we've loaded beforehand.
306 */
307 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_FINDGROP, 1, 0);
308 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_MOVEGROP, 4,
309 rects[i].x, rects[i].y,
310 rects[i].w, rects[i].h);
311 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_FINDGROP, 1, 1);
312 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_MOVEGROP, 4,
313 rects[i].x, rects[i].y,
314 rects[i].w, rects[i].h);
315
316 /* Go perform the update */
317 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_INCREMENTAL, 0);
318 pgSubUpdate(this->hidden->wCanvas);
319 }
320 }
321
322 int PG_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
323 {
324 /* do nothing of note. */
325 return(1);
326 }
327
328 /* Note: If we are terminated, this could be called in the middle of
329 another SDL video routine -- notably UpdateRects.
330 */
331 void PG_VideoQuit(_THIS)
332 {
333 if (this->screen->pixels != NULL)
334 {
335 shmdt(this->screen->pixels);
336 this->screen->pixels = NULL;
337 pgDelete(this->hidden->bitmap);
338 }
339 pgDelete(this->hidden->wCanvas);
340 pgDelete(this->hidden->wApp);
341 }
342
343 void PG_SetCaption(_THIS, const char *title, const char *icon)
344 {
345 if (title != NULL)
346 pgReplaceText(this->hidden->wApp, title);
347 pgUpdate();
348 }
349
350 /* FIXME: The cursor stuff isn't implemented yet! */
351
352 WMcursor * PG_CreateWMCursor (_THIS,Uint8 * data, Uint8 * mask,
353 int w, int h, int hot_x, int hot_y)
354 {
355 static WMcursor dummy;
356 return &dummy;
357 }
358
359 void PG_FreeWMCursor (_THIS, WMcursor * cursor)
360 {
361 }
362
363 void PG_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
364 {
365 }
366
367 int PG_ShowWMCursor (_THIS, WMcursor * cursor)
368 {
369 return 1;
370 }