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 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 | #include "SDL_config.h" |
23 | |
24 | /* |
25 | File added by Alan Buckley (alan_baa@hotmail.com) for RISC OS compatability |
26 | 27 March 2003 |
27 | |
28 | Implements RISC OS Wimp display. |
29 | */ |
30 | |
31 | #include "SDL_video.h" |
32 | #include "SDL_mouse.h" |
33 | #include "../SDL_sysvideo.h" |
34 | #include "../SDL_pixels_c.h" |
35 | #include "../../events/SDL_events_c.h" |
36 | |
37 | #include "SDL_riscostask.h" |
38 | #include "SDL_riscosvideo.h" |
39 | #include "SDL_riscosevents_c.h" |
40 | #include "SDL_riscosmouse_c.h" |
41 | |
42 | #include "kernel.h" |
43 | #include "swis.h" |
44 | |
45 | /* Initialization/Query functions */ |
46 | SDL_Rect **WIMP_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); |
47 | SDL_Surface *WIMP_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); |
48 | int WIMP_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors); |
49 | void WIMP_SetWMCaption(_THIS, const char *title, const char *icon); |
50 | |
51 | |
52 | extern unsigned char *WIMP_CreateBuffer(int width, int height, int bpp); |
53 | extern void WIMP_PumpEvents(_THIS); |
54 | extern void WIMP_PlotSprite(_THIS, int x, int y); |
55 | extern void WIMP_SetupPlotInfo(_THIS); |
56 | extern void WIMP_SetFocus(int win); |
57 | |
58 | /* etc. */ |
59 | static void WIMP_UpdateRects(_THIS, int numrects, SDL_Rect *rects); |
60 | |
61 | /* RISC OS Wimp handling helpers */ |
62 | void WIMP_ReadModeInfo(_THIS); |
63 | unsigned int WIMP_SetupWindow(_THIS, SDL_Surface *surface); |
64 | void WIMP_SetDeviceMode(_THIS); |
65 | void WIMP_DeleteWindow(_THIS); |
66 | |
67 | /* FULLSCREEN function required for wimp/fullscreen toggling */ |
68 | extern int FULLSCREEN_SetMode(int width, int height, int bpp); |
69 | |
70 | /* Currently need to set this up here as it only works if you |
71 | start up in a Wimp mode */ |
72 | extern int RISCOS_ToggleFullScreen(_THIS, int fullscreen); |
73 | |
74 | extern int riscos_backbuffer; |
75 | extern int mouseInWindow; |
76 | extern int riscos_closeaction; |
77 | |
78 | /* Following needed to ensure window is shown immediately */ |
79 | extern int hasFocus; |
80 | extern void WIMP_Poll(_THIS, int waitTime); |
81 | |
82 | SDL_Surface *WIMP_SetVideoMode(_THIS, SDL_Surface *current, |
83 | int width, int height, int bpp, Uint32 flags) |
84 | { |
85 | Uint32 Rmask = 0; |
86 | Uint32 Gmask = 0; |
87 | Uint32 Bmask = 0; |
88 | char *buffer = NULL; |
89 | int bytesPerPixel = 1; |
90 | |
91 | /* Don't support double buffering in Wimp mode */ |
92 | flags &= ~SDL_DOUBLEBUF; |
93 | flags &= ~SDL_HWSURFACE; |
94 | |
95 | switch(bpp) |
96 | { |
97 | case 8: |
98 | /* Emulated palette using ColourTrans */ |
99 | flags |= SDL_HWPALETTE; |
100 | break; |
101 | |
102 | case 15: |
103 | case 16: |
104 | Bmask = 0x00007c00; |
105 | Gmask = 0x000003e0; |
106 | Rmask = 0x0000001f; |
107 | bytesPerPixel = 2; |
108 | break; |
109 | |
110 | case 32: |
111 | Bmask = 0x00ff0000; |
112 | Gmask = 0x0000ff00; |
113 | Rmask = 0x000000ff; |
114 | bytesPerPixel = 4; |
115 | break; |
116 | |
117 | default: |
118 | SDL_SetError("Pixel depth not supported"); |
119 | return NULL; |
120 | break; |
121 | } |
122 | |
123 | /* printf("Setting mode %dx%d\n", width, height);*/ |
124 | |
125 | /* Allocate the new pixel format for the screen */ |
126 | if ( ! SDL_ReallocFormat(current, bpp, Rmask, Gmask, Bmask, 0) ) { |
127 | SDL_SetError("Couldn't allocate new pixel format for requested mode"); |
128 | return(NULL); |
129 | } |
130 | |
131 | /* Set up the new mode framebuffer */ |
132 | current->w = width; |
133 | this->hidden->height = current->h = height; |
134 | |
135 | if (bpp == 15) bpp = 16; |
136 | buffer = WIMP_CreateBuffer(width, height, bpp); |
137 | if (buffer == NULL) |
138 | { |
139 | SDL_SetError("Couldn't create sprite for video memory"); |
140 | return (NULL); |
141 | } |
142 | |
143 | this->hidden->bank[0] = buffer + 60; /* Start of sprite data */ |
144 | if (bpp == 8) this->hidden->bank[0] += 2048; /* 8bpp sprite have palette first */ |
145 | |
146 | this->hidden->bank[1] = buffer; /* Start of buffer */ |
147 | |
148 | /* Remember sprite buffer so it can be freed later */ |
149 | if (this->hidden->alloc_bank) SDL_free(this->hidden->alloc_bank); |
150 | this->hidden->alloc_bank = buffer; |
151 | |
152 | current->pitch = width * bytesPerPixel; |
153 | if ((current->pitch & 3)) |
154 | { |
155 | /* Sprites are 32bit word aligned */ |
156 | current->pitch += (4 - (current->pitch & 3)); |
157 | } |
158 | |
159 | current->flags = flags | SDL_PREALLOC; |
160 | |
161 | WIMP_ReadModeInfo(this); |
162 | |
163 | SDL_memset(this->hidden->bank[0], 0, height * current->pitch); |
164 | |
165 | this->hidden->current_bank = 0; |
166 | current->pixels = this->hidden->bank[0]; |
167 | |
168 | |
169 | if (WIMP_SetupWindow(this, current) == 0) |
170 | { |
171 | SDL_SetError("Unable to create window to display surface"); |
172 | return NULL; |
173 | } |
174 | |
175 | /* Reset device functions for the wimp */ |
176 | WIMP_SetDeviceMode(this); |
177 | |
178 | /* Needs to set up plot info after window has been created */ |
179 | /* Not sure why, but plots don't work if I do it earlier */ |
180 | WIMP_SetupPlotInfo(this); |
181 | |
182 | /* Poll until window is shown */ |
183 | { |
184 | /* We wait until it gets the focus, but give up after 5 seconds |
185 | in case the focus is prevented in any way. |
186 | */ |
187 | Uint32 now = SDL_GetTicks(); |
188 | while (!hasFocus && SDL_GetTicks() - now < 5000) |
189 | { |
190 | WIMP_Poll(this, 0); |
191 | } |
192 | } |
193 | |
194 | /* We're done */ |
195 | return(current); |
196 | } |
197 | |
198 | |
199 | void WIMP_ReadModeInfo(_THIS) |
200 | { |
201 | _kernel_swi_regs regs; |
202 | int vars[6]; |
203 | int vals[5]; |
204 | |
205 | vars[0] = 4; /* XEig */ |
206 | vars[1] = 5; /* YEig */ |
207 | vars[2] = 9; /* Log base 2 bpp */ |
208 | vars[3] = 11; /* Screen Width - 1 */ |
209 | vars[4] = 12; /* Screen Depth - 1 */ |
210 | vars[5] = -1; /* Terminate list */ |
211 | |
212 | regs.r[0] = (int)vars; |
213 | regs.r[1] = (int)vals; |
214 | _kernel_swi(OS_ReadVduVariables, ®s, ®s); |
215 | this->hidden->xeig = vals[0]; |
216 | this->hidden->yeig = vals[1]; |
217 | this->hidden->screen_bpp = 1 << vals[2]; |
218 | this->hidden->screen_width = vals[3] + 1; |
219 | this->hidden->screen_height = vals[4] + 1; |
220 | } |
221 | |
222 | /* Set device function to call the correct versions for running |
223 | in a wimp window */ |
224 | |
225 | void WIMP_SetDeviceMode(_THIS) |
226 | { |
227 | if (this->UpdateRects == WIMP_UpdateRects) return; /* Already set up */ |
228 | |
229 | this->SetColors = WIMP_SetColors; |
230 | this->UpdateRects = WIMP_UpdateRects; |
231 | |
232 | this->FlipHWSurface = NULL; |
233 | |
234 | this->SetCaption = WIMP_SetWMCaption; |
235 | this->SetIcon = NULL; |
236 | this->IconifyWindow = NULL; |
237 | |
238 | this->ShowWMCursor = WIMP_ShowWMCursor; |
239 | this->WarpWMCursor = WIMP_WarpWMCursor; |
240 | |
241 | this->ToggleFullScreen = RISCOS_ToggleFullScreen; |
242 | |
243 | this->PumpEvents = WIMP_PumpEvents; |
244 | } |
245 | |
246 | /* Setup the Window to display the surface */ |
247 | unsigned int WIMP_SetupWindow(_THIS, SDL_Surface *surface) |
248 | { |
249 | _kernel_swi_regs regs; |
250 | int window_data[23]; |
251 | int *window_block = window_data+1; |
252 | int x = (this->hidden->screen_width - surface->w) / 2; |
253 | int y = (this->hidden->screen_height - surface->h) / 2; |
254 | int xeig = this->hidden->xeig; |
255 | int yeig = this->hidden->yeig; |
256 | |
257 | mouseInWindow = 0; |
258 | |
259 | /* Always delete the window and recreate on a change */ |
260 | if (this->hidden->window_handle) WIMP_DeleteWindow(this); |
261 | |
262 | /* Setup window co-ordinates */ |
263 | window_block[0] = x << xeig; |
264 | window_block[1] = y << yeig; |
265 | window_block[2] = window_block[0] + (surface->w << xeig); |
266 | window_block[3] = window_block[1] + (surface->h << yeig); |
267 | |
268 | |
269 | window_block[4] = 0; /* Scroll offsets */ |
270 | window_block[5] = 0; |
271 | window_block[6] = -1; /* Open on top of window stack */ |
272 | |
273 | window_block[7] = 0x85040042; /* Window flags */ |
274 | if (riscos_closeaction != 0) window_block[7] |= 0x2000000; |
275 | |
276 | /* TODO: Take into account surface->flags */ |
277 | |
278 | window_block[8] = 0xff070207; /* Window colours */ |
279 | window_block[9] = 0x000c0103; |
280 | window_block[10] = 0; /* Work area minimum */ |
281 | window_block[11] = -surface->h << yeig; |
282 | window_block[12] = surface->w << xeig; /* Work area maximum */ |
283 | window_block[13] = 0; |
284 | window_block[14] = 0x2700013d; /* Title icon flags */ |
285 | window_block[15] = 0x00003000; /* Work area flags - Mouse click down reported */ |
286 | window_block[16] = 1; /* Sprite area control block pointer */ |
287 | window_block[17] = 0x00100010; /* Minimum window size (width & height) (16x16)*/ |
288 | window_block[18] = (int)this->hidden->title; /* Title data */ |
289 | window_block[19] = -1; |
290 | window_block[20] = 256; |
291 | window_block[21] = 0; /* Number of icons */ |
292 | |
293 | regs.r[1] = (unsigned int)(window_block); |
294 | |
295 | /* Create the window */ |
296 | if (_kernel_swi(Wimp_CreateWindow, ®s, ®s) == NULL) |
297 | { |
298 | this->hidden->window_handle = window_data[0] = regs.r[0]; |
299 | |
300 | /* Show the window on the screen */ |
301 | regs.r[1] = (unsigned int)window_data; |
302 | if (_kernel_swi(Wimp_OpenWindow, ®s, ®s) == NULL) |
303 | { |
304 | WIMP_SetFocus(this->hidden->window_handle); |
305 | } else |
306 | { |
307 | WIMP_DeleteWindow(this); |
308 | } |
309 | } |
310 | |
311 | return this->hidden->window_handle; |
312 | } |
313 | |
314 | /* Destroy the Window */ |
315 | |
316 | void WIMP_DeleteWindow(_THIS) |
317 | { |
318 | _kernel_swi_regs regs; |
319 | regs.r[1] = (unsigned int)&(this->hidden->window_handle); |
320 | _kernel_swi(Wimp_DeleteWindow, ®s, ®s); |
321 | this->hidden->window_handle = 0; |
322 | } |
323 | |
324 | |
325 | void WIMP_UpdateRects(_THIS, int numrects, SDL_Rect *rects) |
326 | { |
327 | _kernel_swi_regs regs; |
328 | int update_block[12]; |
329 | int xeig = this->hidden->xeig; |
330 | int yeig = this->hidden->yeig; |
331 | int j; |
332 | update_block[0] = this->hidden->window_handle; |
333 | |
334 | for (j = 0; j < numrects; j++) |
335 | { |
336 | update_block[1] = rects[j].x << xeig; /* Min X */ |
337 | update_block[4] = -(rects[j].y << yeig); |
338 | update_block[3] = update_block[1] + (rects[j].w << xeig); |
339 | update_block[2] = update_block[4] - (rects[j].h << yeig); |
340 | |
341 | regs.r[1] = (int)update_block; |
342 | /* Update window can fail if called before first poll */ |
343 | if (_kernel_swi(Wimp_UpdateWindow, ®s, ®s) == 0) |
344 | { |
345 | while (regs.r[0]) |
346 | { |
347 | WIMP_PlotSprite(this, update_block[1], update_block[2]); |
348 | _kernel_swi(Wimp_GetRectangle, ®s, ®s); |
349 | } |
350 | } |
351 | } |
352 | } |
353 | |
354 | |
355 | int WIMP_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) |
356 | { |
357 | unsigned int *pal = (unsigned int *)(this->hidden->bank[1]+60); |
358 | int j; |
359 | SDL_Rect update; |
360 | |
361 | pal += firstcolor*2; |
362 | for (j = 0; j < ncolors; j++) |
363 | { |
364 | *pal = (((unsigned int)colors->r) << 8) |
365 | + (((unsigned int)colors->g) << 16) |
366 | + (((unsigned int)colors->b) << 24); |
367 | pal[1] = *pal; |
368 | pal += 2; |
369 | colors++; |
370 | } |
371 | |
372 | WIMP_SetupPlotInfo(this); |
373 | |
374 | /* Need to refresh the window */ |
375 | update.x = 0; |
376 | update.y = 0; |
377 | update.w = SDL_VideoSurface->w; |
378 | update.h = SDL_VideoSurface->h; |
379 | WIMP_UpdateRects(this, 1, &update); |
380 | |
381 | return 1; |
382 | } |
383 | |
384 | void WIMP_SetWMCaption(_THIS, const char *title, const char *icon) |
385 | { |
386 | _kernel_swi_regs regs; |
387 | |
388 | SDL_strlcpy(this->hidden->title, title, SDL_arraysize(this->hidden->title)); |
389 | |
390 | if (RISCOS_GetWimpVersion() < 380) |
391 | { |
392 | int block[6]; |
393 | |
394 | regs.r[1] = (int)block; |
395 | _kernel_swi(Wimp_GetCaretPosition, ®s, ®s); |
396 | if (block[0] == (int)this->hidden->window_handle) |
397 | { |
398 | regs.r[0] = -1; |
399 | _kernel_swi(Wimp_SetCaretPosition, ®s,®s); |
400 | } else |
401 | { |
402 | regs.r[0] = this->hidden->window_handle; |
403 | regs.r[1] = -1; |
404 | regs.r[2] = -1; |
405 | regs.r[3] = -1; |
406 | _kernel_swi(Wimp_SetCaretPosition, ®s,®s); |
407 | } |
408 | regs.r[0] = block[0]; |
409 | regs.r[1] = block[1]; |
410 | regs.r[2] = block[2]; |
411 | regs.r[3] = block[3]; |
412 | regs.r[4] = block[4]; |
413 | regs.r[5] = block[5]; |
414 | _kernel_swi(Wimp_SetCaretPosition, ®s,®s); |
415 | } else |
416 | { |
417 | regs.r[0] = this->hidden->window_handle; |
418 | regs.r[1] = 0x4b534154; /* "TASK" */ |
419 | regs.r[2] = 3; /* Redraw title */ |
420 | _kernel_swi(Wimp_ForceRedraw, ®s, ®s); |
421 | } |
422 | } |
423 | |
424 | void WIMP_RefreshDesktop(_THIS) |
425 | { |
426 | int width = this->hidden->screen_width << this->hidden->xeig; |
427 | int height = this->hidden->screen_height << this->hidden->yeig; |
428 | _kernel_swi_regs regs; |
429 | regs.r[0] = -1; /* Whole screen */ |
430 | regs.r[1] = 0; |
431 | regs.r[2] = 0; |
432 | regs.r[3] = width; |
433 | regs.r[4] = height; |
434 | _kernel_swi(Wimp_ForceRedraw, ®s, ®s); |
435 | } |
436 | |
437 | /* Toggle to window from full screen */ |
438 | int WIMP_ToggleFromFullScreen(_THIS) |
439 | { |
440 | int width = this->screen->w; |
441 | int height = this->screen->h; |
442 | int bpp = this->screen->format->BitsPerPixel; |
443 | char *buffer = NULL; |
444 | char *old_bank[2]; |
445 | char *old_alloc_bank; |
446 | |
447 | /* Ensure flags are OK */ |
448 | this->screen->flags &= ~(SDL_DOUBLEBUF|SDL_HWSURFACE); |
449 | |
450 | if (this->hidden->bank[0] == this->hidden->alloc_bank || riscos_backbuffer == 0) |
451 | { |
452 | /* Need to create a sprite for the screen and copy the data to it */ |
453 | char *data; |
454 | buffer = WIMP_CreateBuffer(width, height, bpp); |
455 | data = buffer + 60; /* Start of sprite data */ |
456 | if (bpp == 8) data += 2048; /* 8bpp sprite have palette first */ |
457 | |
458 | if (buffer == NULL) return 0; |
459 | SDL_memcpy(data, this->hidden->bank[0], width * height * this->screen->format->BytesPerPixel); |
460 | } |
461 | /* else We've switch to full screen before so we already have a sprite */ |
462 | |
463 | old_bank[0] = this->hidden->bank[0]; |
464 | old_bank[1] = this->hidden->bank[1]; |
465 | old_alloc_bank = this->hidden->alloc_bank; |
466 | |
467 | if (buffer != NULL) this->hidden->alloc_bank = buffer; |
468 | |
469 | this->hidden->bank[1] = this->hidden->alloc_bank; |
470 | this->hidden->bank[0] = this->hidden->bank[1] + 60; /* Start of sprite data */ |
471 | if (bpp == 8) this->hidden->bank[0] += 2048; /* 8bpp sprite have palette first */ |
472 | |
473 | this->hidden->current_bank = 0; |
474 | this->screen->pixels = this->hidden->bank[0]; |
475 | |
476 | RISCOS_RestoreWimpMode(); |
477 | WIMP_ReadModeInfo(this); |
478 | if (WIMP_SetupWindow(this, this->screen)) |
479 | { |
480 | WIMP_SetDeviceMode(this); |
481 | WIMP_SetupPlotInfo(this); |
482 | |
483 | if (riscos_backbuffer == 0) riscos_backbuffer = 1; |
484 | |
485 | if (buffer && old_alloc_bank) SDL_free(old_alloc_bank); |
486 | |
487 | return 1; |
488 | } else |
489 | { |
490 | /* Drop back to full screen mode on failure */ |
491 | this->hidden->bank[0] = old_bank[0]; |
492 | this->hidden->bank[1] = old_bank[1]; |
493 | this->hidden->alloc_bank = old_alloc_bank; |
494 | if (buffer) SDL_free(buffer); |
495 | |
496 | RISCOS_StoreWimpMode(); |
497 | FULLSCREEN_SetMode(width, height, bpp); |
498 | } |
499 | |
500 | return 0; |
501 | } |