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sdl: improve error message on fatal error
[qemu.git] / sdl.c
1 /*
2  * QEMU SDL display driver
3  *
4  * Copyright (c) 2003 Fabrice Bellard
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a copy
7  * of this software and associated documentation files (the "Software"), to deal
8  * in the Software without restriction, including without limitation the rights
9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10  * copies of the Software, and to permit persons to whom the Software is
11  * furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included in
14  * all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22  * THE SOFTWARE.
23  */
24 #include <SDL.h>
25 #include <SDL_syswm.h>
26
27 #ifndef _WIN32
28 #include <signal.h>
29 #endif
30
31 #include "qemu-common.h"
32 #include "console.h"
33 #include "sysemu.h"
34 #include "x_keymap.h"
35 #include "sdl_zoom.h"
36
37 static DisplayChangeListener *dcl;
38 static SDL_Surface *real_screen;
39 static SDL_Surface *guest_screen = NULL;
40 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
41 static int last_vm_running;
42 static int gui_saved_grab;
43 static int gui_fullscreen;
44 static int gui_noframe;
45 static int gui_key_modifier_pressed;
46 static int gui_keysym;
47 static int gui_fullscreen_initial_grab;
48 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
49 static uint8_t modifiers_state[256];
50 static int width, height;
51 static SDL_Cursor *sdl_cursor_normal;
52 static SDL_Cursor *sdl_cursor_hidden;
53 static int absolute_enabled = 0;
54 static int guest_cursor = 0;
55 static int guest_x, guest_y;
56 static SDL_Cursor *guest_sprite = NULL;
57 static uint8_t allocator;
58 static SDL_PixelFormat host_format;
59 static int scaling_active = 0;
60
61 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
62 {
63     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
64     SDL_Rect rec;
65     rec.x = x;
66     rec.y = y;
67     rec.w = w;
68     rec.h = h;
69
70     if (guest_screen) {
71         if (!scaling_active) {
72             SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
73         } else {
74             if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
75                 fprintf(stderr, "Zoom blit failed\n");
76                 exit(1);
77             }
78         }
79     } 
80     SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
81 }
82
83 static void sdl_setdata(DisplayState *ds)
84 {
85     SDL_Rect rec;
86     rec.x = 0;
87     rec.y = 0;
88     rec.w = real_screen->w;
89     rec.h = real_screen->h;
90
91     if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
92
93     guest_screen = SDL_CreateRGBSurfaceFrom(ds_get_data(ds), ds_get_width(ds), ds_get_height(ds),
94                                             ds_get_bits_per_pixel(ds), ds_get_linesize(ds),
95                                             ds->surface->pf.rmask, ds->surface->pf.gmask,
96                                             ds->surface->pf.bmask, ds->surface->pf.amask);
97 }
98
99 static void do_sdl_resize(int new_width, int new_height, int bpp)
100 {
101     int flags;
102
103     //    printf("resizing to %d %d\n", w, h);
104
105     flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL|SDL_RESIZABLE;
106     if (gui_fullscreen)
107         flags |= SDL_FULLSCREEN;
108     if (gui_noframe)
109         flags |= SDL_NOFRAME;
110
111     width = new_width;
112     height = new_height;
113     real_screen = SDL_SetVideoMode(width, height, bpp, flags);
114     if (!real_screen) {
115         fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n", width, 
116                 height, bpp, SDL_GetError());
117         exit(1);
118     }
119 }
120
121 static void sdl_resize(DisplayState *ds)
122 {
123     if  (!allocator) {
124         if (!scaling_active)
125             do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
126         else if (real_screen->format->BitsPerPixel != ds_get_bits_per_pixel(ds))
127             do_sdl_resize(real_screen->w, real_screen->h, ds_get_bits_per_pixel(ds));
128         sdl_setdata(ds);
129     } else {
130         if (guest_screen != NULL) {
131             SDL_FreeSurface(guest_screen);
132             guest_screen = NULL;
133         }
134     }
135 }
136
137 static PixelFormat sdl_to_qemu_pixelformat(SDL_PixelFormat *sdl_pf)
138 {
139     PixelFormat qemu_pf;
140
141     memset(&qemu_pf, 0x00, sizeof(PixelFormat));
142
143     qemu_pf.bits_per_pixel = sdl_pf->BitsPerPixel;
144     qemu_pf.bytes_per_pixel = sdl_pf->BytesPerPixel;
145     qemu_pf.depth = (qemu_pf.bits_per_pixel) == 32 ? 24 : (qemu_pf.bits_per_pixel);
146
147     qemu_pf.rmask = sdl_pf->Rmask;
148     qemu_pf.gmask = sdl_pf->Gmask;
149     qemu_pf.bmask = sdl_pf->Bmask;
150     qemu_pf.amask = sdl_pf->Amask;
151
152     qemu_pf.rshift = sdl_pf->Rshift;
153     qemu_pf.gshift = sdl_pf->Gshift;
154     qemu_pf.bshift = sdl_pf->Bshift;
155     qemu_pf.ashift = sdl_pf->Ashift;
156
157     qemu_pf.rbits = 8 - sdl_pf->Rloss;
158     qemu_pf.gbits = 8 - sdl_pf->Gloss;
159     qemu_pf.bbits = 8 - sdl_pf->Bloss;
160     qemu_pf.abits = 8 - sdl_pf->Aloss;
161
162     qemu_pf.rmax = ((1 << qemu_pf.rbits) - 1);
163     qemu_pf.gmax = ((1 << qemu_pf.gbits) - 1);
164     qemu_pf.bmax = ((1 << qemu_pf.bbits) - 1);
165     qemu_pf.amax = ((1 << qemu_pf.abits) - 1);
166
167     return qemu_pf;
168 }
169
170 static DisplaySurface* sdl_create_displaysurface(int width, int height)
171 {
172     DisplaySurface *surface = (DisplaySurface*) qemu_mallocz(sizeof(DisplaySurface));
173     if (surface == NULL) {
174         fprintf(stderr, "sdl_create_displaysurface: malloc failed\n");
175         exit(1);
176     }
177
178     surface->width = width;
179     surface->height = height;
180     
181     if (scaling_active) {
182         if (host_format.BytesPerPixel != 2 && host_format.BytesPerPixel != 4) {
183             surface->linesize = width * 4;
184             surface->pf = qemu_default_pixelformat(32);
185         } else {
186             surface->linesize = width * host_format.BytesPerPixel;
187             surface->pf = sdl_to_qemu_pixelformat(&host_format);
188         }
189 #ifdef HOST_WORDS_BIGENDIAN
190         surface->flags = QEMU_ALLOCATED_FLAG | QEMU_BIG_ENDIAN_FLAG;
191 #else
192         surface->flags = QEMU_ALLOCATED_FLAG;
193 #endif
194         surface->data = (uint8_t*) qemu_mallocz(surface->linesize * surface->height);
195
196         return surface;
197     }
198
199     if (host_format.BitsPerPixel == 16)
200         do_sdl_resize(width, height, 16);
201     else
202         do_sdl_resize(width, height, 32);
203
204     surface->pf = sdl_to_qemu_pixelformat(real_screen->format);
205     surface->linesize = real_screen->pitch;
206     surface->data = real_screen->pixels;
207
208 #ifdef HOST_WORDS_BIGENDIAN
209     surface->flags = QEMU_REALPIXELS_FLAG | QEMU_BIG_ENDIAN_FLAG;
210 #else
211     surface->flags = QEMU_REALPIXELS_FLAG;
212 #endif
213     allocator = 1;
214
215     return surface;
216 }
217
218 static void sdl_free_displaysurface(DisplaySurface *surface)
219 {
220     allocator = 0;
221     if (surface == NULL)
222         return;
223
224     if (surface->flags & QEMU_ALLOCATED_FLAG)
225         qemu_free(surface->data);
226     qemu_free(surface);
227 }
228
229 static DisplaySurface* sdl_resize_displaysurface(DisplaySurface *surface, int width, int height)
230 {
231     sdl_free_displaysurface(surface);
232     return sdl_create_displaysurface(width, height);
233 }
234
235 /* generic keyboard conversion */
236
237 #include "sdl_keysym.h"
238
239 static kbd_layout_t *kbd_layout = NULL;
240
241 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
242 {
243     int keysym;
244     /* workaround for X11+SDL bug with AltGR */
245     keysym = ev->keysym.sym;
246     if (keysym == 0 && ev->keysym.scancode == 113)
247         keysym = SDLK_MODE;
248     /* For Japanese key '\' and '|' */
249     if (keysym == 92 && ev->keysym.scancode == 133) {
250         keysym = 0xa5;
251     }
252     return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
253 }
254
255 /* specific keyboard conversions from scan codes */
256
257 #if defined(_WIN32)
258
259 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
260 {
261     return ev->keysym.scancode;
262 }
263
264 #else
265
266 #if defined(SDL_VIDEO_DRIVER_X11)
267 #include <X11/XKBlib.h>
268
269 static int check_for_evdev(void)
270 {
271     SDL_SysWMinfo info;
272     XkbDescPtr desc = NULL;
273     int has_evdev = 0;
274     char *keycodes = NULL;
275
276     SDL_VERSION(&info.version);
277     if (!SDL_GetWMInfo(&info)) {
278         return 0;
279     }
280     desc = XkbGetKeyboard(info.info.x11.display,
281                           XkbGBN_AllComponentsMask,
282                           XkbUseCoreKbd);
283     if (desc && desc->names) {
284         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
285         if (keycodes == NULL) {
286             fprintf(stderr, "could not lookup keycode name\n");
287         } else if (strstart(keycodes, "evdev", NULL)) {
288             has_evdev = 1;
289         } else if (!strstart(keycodes, "xfree86", NULL)) {
290             fprintf(stderr, "unknown keycodes `%s', please report to "
291                     "[email protected]\n", keycodes);
292         }
293     }
294
295     if (desc) {
296         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
297     }
298     if (keycodes) {
299         XFree(keycodes);
300     }
301     return has_evdev;
302 }
303 #else
304 static int check_for_evdev(void)
305 {
306         return 0;
307 }
308 #endif
309
310 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
311 {
312     int keycode;
313     static int has_evdev = -1;
314
315     if (has_evdev == -1)
316         has_evdev = check_for_evdev();
317
318     keycode = ev->keysym.scancode;
319
320     if (keycode < 9) {
321         keycode = 0;
322     } else if (keycode < 97) {
323         keycode -= 8; /* just an offset */
324     } else if (keycode < 158) {
325         /* use conversion table */
326         if (has_evdev)
327             keycode = translate_evdev_keycode(keycode - 97);
328         else
329             keycode = translate_xfree86_keycode(keycode - 97);
330     } else if (keycode == 208) { /* Hiragana_Katakana */
331         keycode = 0x70;
332     } else if (keycode == 211) { /* backslash */
333         keycode = 0x73;
334     } else {
335         keycode = 0;
336     }
337     return keycode;
338 }
339
340 #endif
341
342 static void reset_keys(void)
343 {
344     int i;
345     for(i = 0; i < 256; i++) {
346         if (modifiers_state[i]) {
347             if (i & SCANCODE_GREY)
348                 kbd_put_keycode(SCANCODE_EMUL0);
349             kbd_put_keycode(i | SCANCODE_UP);
350             modifiers_state[i] = 0;
351         }
352     }
353 }
354
355 static void sdl_process_key(SDL_KeyboardEvent *ev)
356 {
357     int keycode, v;
358
359     if (ev->keysym.sym == SDLK_PAUSE) {
360         /* specific case */
361         v = 0;
362         if (ev->type == SDL_KEYUP)
363             v |= SCANCODE_UP;
364         kbd_put_keycode(0xe1);
365         kbd_put_keycode(0x1d | v);
366         kbd_put_keycode(0x45 | v);
367         return;
368     }
369
370     if (kbd_layout) {
371         keycode = sdl_keyevent_to_keycode_generic(ev);
372     } else {
373         keycode = sdl_keyevent_to_keycode(ev);
374     }
375
376     switch(keycode) {
377     case 0x00:
378         /* sent when leaving window: reset the modifiers state */
379         reset_keys();
380         return;
381     case 0x2a:                          /* Left Shift */
382     case 0x36:                          /* Right Shift */
383     case 0x1d:                          /* Left CTRL */
384     case 0x9d:                          /* Right CTRL */
385     case 0x38:                          /* Left ALT */
386     case 0xb8:                         /* Right ALT */
387         if (ev->type == SDL_KEYUP)
388             modifiers_state[keycode] = 0;
389         else
390             modifiers_state[keycode] = 1;
391         break;
392     case 0x45: /* num lock */
393     case 0x3a: /* caps lock */
394         /* SDL does not send the key up event, so we generate it */
395         kbd_put_keycode(keycode);
396         kbd_put_keycode(keycode | SCANCODE_UP);
397         return;
398     }
399
400     /* now send the key code */
401     if (keycode & SCANCODE_GREY)
402         kbd_put_keycode(SCANCODE_EMUL0);
403     if (ev->type == SDL_KEYUP)
404         kbd_put_keycode(keycode | SCANCODE_UP);
405     else
406         kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
407 }
408
409 static void sdl_update_caption(void)
410 {
411     char win_title[1024];
412     char icon_title[1024];
413     const char *status = "";
414
415     if (!vm_running)
416         status = " [Stopped]";
417     else if (gui_grab) {
418         if (alt_grab)
419             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
420         else if (ctrl_grab)
421             status = " - Press Right-Ctrl to exit mouse grab";
422         else
423             status = " - Press Ctrl-Alt to exit mouse grab";
424     }
425
426     if (qemu_name) {
427         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
428         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
429     } else {
430         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
431         snprintf(icon_title, sizeof(icon_title), "QEMU");
432     }
433
434     SDL_WM_SetCaption(win_title, icon_title);
435 }
436
437 static void sdl_hide_cursor(void)
438 {
439     if (!cursor_hide)
440         return;
441
442     if (kbd_mouse_is_absolute()) {
443         SDL_ShowCursor(1);
444         SDL_SetCursor(sdl_cursor_hidden);
445     } else {
446         SDL_ShowCursor(0);
447     }
448 }
449
450 static void sdl_show_cursor(void)
451 {
452     if (!cursor_hide)
453         return;
454
455     if (!kbd_mouse_is_absolute()) {
456         SDL_ShowCursor(1);
457         if (guest_cursor &&
458                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
459             SDL_SetCursor(guest_sprite);
460         else
461             SDL_SetCursor(sdl_cursor_normal);
462     }
463 }
464
465 static void sdl_grab_start(void)
466 {
467     if (guest_cursor) {
468         SDL_SetCursor(guest_sprite);
469         if (!kbd_mouse_is_absolute() && !absolute_enabled)
470             SDL_WarpMouse(guest_x, guest_y);
471     } else
472         sdl_hide_cursor();
473
474     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
475         gui_grab = 1;
476         sdl_update_caption();
477     } else
478         sdl_show_cursor();
479 }
480
481 static void sdl_grab_end(void)
482 {
483     SDL_WM_GrabInput(SDL_GRAB_OFF);
484     gui_grab = 0;
485     sdl_show_cursor();
486     sdl_update_caption();
487 }
488
489 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
490 {
491     int buttons;
492     buttons = 0;
493     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
494         buttons |= MOUSE_EVENT_LBUTTON;
495     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
496         buttons |= MOUSE_EVENT_RBUTTON;
497     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
498         buttons |= MOUSE_EVENT_MBUTTON;
499
500     if (kbd_mouse_is_absolute()) {
501         if (!absolute_enabled) {
502             sdl_hide_cursor();
503             if (gui_grab) {
504                 sdl_grab_end();
505             }
506             absolute_enabled = 1;
507         }
508
509        dx = x * 0x7FFF / (width - 1);
510        dy = y * 0x7FFF / (height - 1);
511     } else if (absolute_enabled) {
512         sdl_show_cursor();
513         absolute_enabled = 0;
514     } else if (guest_cursor) {
515         x -= guest_x;
516         y -= guest_y;
517         guest_x += x;
518         guest_y += y;
519         dx = x;
520         dy = y;
521     }
522
523     kbd_mouse_event(dx, dy, dz, buttons);
524 }
525
526 static void toggle_full_screen(DisplayState *ds)
527 {
528     gui_fullscreen = !gui_fullscreen;
529     do_sdl_resize(real_screen->w, real_screen->h, real_screen->format->BitsPerPixel);
530     if (gui_fullscreen) {
531         scaling_active = 0;
532         gui_saved_grab = gui_grab;
533         sdl_grab_start();
534     } else {
535         if (!gui_saved_grab)
536             sdl_grab_end();
537     }
538     vga_hw_invalidate();
539     vga_hw_update();
540 }
541
542 static void sdl_refresh(DisplayState *ds)
543 {
544     SDL_Event ev1, *ev = &ev1;
545     int mod_state;
546     int buttonstate = SDL_GetMouseState(NULL, NULL);
547
548     if (last_vm_running != vm_running) {
549         last_vm_running = vm_running;
550         sdl_update_caption();
551     }
552
553     vga_hw_update();
554     SDL_EnableUNICODE(!is_graphic_console());
555
556     while (SDL_PollEvent(ev)) {
557         switch (ev->type) {
558         case SDL_VIDEOEXPOSE:
559             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
560             break;
561         case SDL_KEYDOWN:
562         case SDL_KEYUP:
563             if (ev->type == SDL_KEYDOWN) {
564                 if (alt_grab) {
565                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
566                                 (gui_grab_code | KMOD_LSHIFT);
567                 } else if (ctrl_grab) {
568                     mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
569                 } else {
570                     mod_state = (SDL_GetModState() & gui_grab_code) ==
571                                 gui_grab_code;
572                 }
573                 gui_key_modifier_pressed = mod_state;
574                 if (gui_key_modifier_pressed) {
575                     int keycode;
576                     keycode = sdl_keyevent_to_keycode(&ev->key);
577                     switch(keycode) {
578                     case 0x21: /* 'f' key on US keyboard */
579                         toggle_full_screen(ds);
580                         gui_keysym = 1;
581                         break;
582                     case 0x16: /* 'u' key on US keyboard */
583                         scaling_active = 0;
584                         sdl_resize(ds);
585                         vga_hw_invalidate();
586                         vga_hw_update();
587                         break;
588                     case 0x02 ... 0x0a: /* '1' to '9' keys */
589                         /* Reset the modifiers sent to the current console */
590                         reset_keys();
591                         console_select(keycode - 0x02);
592                         if (!is_graphic_console()) {
593                             /* display grab if going to a text console */
594                             if (gui_grab)
595                                 sdl_grab_end();
596                         }
597                         gui_keysym = 1;
598                         break;
599                     default:
600                         break;
601                     }
602                 } else if (!is_graphic_console()) {
603                     int keysym;
604                     keysym = 0;
605                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
606                         switch(ev->key.keysym.sym) {
607                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
608                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
609                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
610                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
611                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
612                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
613                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
614                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
615                         default: break;
616                         }
617                     } else {
618                         switch(ev->key.keysym.sym) {
619                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
620                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
621                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
622                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
623                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
624                         case SDLK_END: keysym = QEMU_KEY_END; break;
625                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
626                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
627                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
628                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
629                         default: break;
630                         }
631                     }
632                     if (keysym) {
633                         kbd_put_keysym(keysym);
634                     } else if (ev->key.keysym.unicode != 0) {
635                         kbd_put_keysym(ev->key.keysym.unicode);
636                     }
637                 }
638             } else if (ev->type == SDL_KEYUP) {
639                 if (!alt_grab) {
640                     mod_state = (ev->key.keysym.mod & gui_grab_code);
641                 } else {
642                     mod_state = (ev->key.keysym.mod &
643                                  (gui_grab_code | KMOD_LSHIFT));
644                 }
645                 if (!mod_state) {
646                     if (gui_key_modifier_pressed) {
647                         gui_key_modifier_pressed = 0;
648                         if (gui_keysym == 0) {
649                             /* exit/enter grab if pressing Ctrl-Alt */
650                             if (!gui_grab) {
651                                 /* if the application is not active,
652                                    do not try to enter grab state. It
653                                    prevents
654                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
655                                    from blocking all the application
656                                    (SDL bug). */
657                                 if (SDL_GetAppState() & SDL_APPACTIVE)
658                                     sdl_grab_start();
659                             } else {
660                                 sdl_grab_end();
661                             }
662                             /* SDL does not send back all the
663                                modifiers key, so we must correct it */
664                             reset_keys();
665                             break;
666                         }
667                         gui_keysym = 0;
668                     }
669                 }
670             }
671             if (is_graphic_console() && !gui_keysym)
672                 sdl_process_key(&ev->key);
673             break;
674         case SDL_QUIT:
675             if (!no_quit)
676                 qemu_system_shutdown_request();
677             break;
678         case SDL_MOUSEMOTION:
679             if (gui_grab || kbd_mouse_is_absolute() ||
680                 absolute_enabled) {
681                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
682                        ev->motion.x, ev->motion.y, ev->motion.state);
683             }
684             break;
685         case SDL_MOUSEBUTTONDOWN:
686         case SDL_MOUSEBUTTONUP:
687             {
688                 SDL_MouseButtonEvent *bev = &ev->button;
689                 if (!gui_grab && !kbd_mouse_is_absolute()) {
690                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
691                         (bev->button == SDL_BUTTON_LEFT)) {
692                         /* start grabbing all events */
693                         sdl_grab_start();
694                     }
695                 } else {
696                     int dz;
697                     dz = 0;
698                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
699                         buttonstate |= SDL_BUTTON(bev->button);
700                     } else {
701                         buttonstate &= ~SDL_BUTTON(bev->button);
702                     }
703 #ifdef SDL_BUTTON_WHEELUP
704                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
705                         dz = -1;
706                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
707                         dz = 1;
708                     }
709 #endif
710                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
711                 }
712             }
713             break;
714         case SDL_ACTIVEEVENT:
715             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
716                 !ev->active.gain && !gui_fullscreen_initial_grab) {
717                 sdl_grab_end();
718             }
719             if (ev->active.state & SDL_APPACTIVE) {
720                 if (ev->active.gain) {
721                     /* Back to default interval */
722                     dcl->gui_timer_interval = 0;
723                     dcl->idle = 0;
724                 } else {
725                     /* Sleeping interval */
726                     dcl->gui_timer_interval = 500;
727                     dcl->idle = 1;
728                 }
729             }
730             break;
731         case SDL_VIDEORESIZE:
732         {
733             SDL_ResizeEvent *rev = &ev->resize;
734             int bpp = real_screen->format->BitsPerPixel;
735             if (bpp != 16 && bpp != 32)
736                 bpp = 32;
737             do_sdl_resize(rev->w, rev->h, bpp);
738             scaling_active = 1;
739             if (!is_buffer_shared(ds->surface)) {
740                 ds->surface = qemu_resize_displaysurface(ds, ds_get_width(ds), ds_get_height(ds));
741                 dpy_resize(ds);
742             }
743             vga_hw_invalidate();
744             vga_hw_update();
745             break;
746         }
747         default:
748             break;
749         }
750     }
751 }
752
753 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
754 {
755     SDL_Rect dst = { x, y, w, h };
756     SDL_FillRect(real_screen, &dst, c);
757 }
758
759 static void sdl_mouse_warp(int x, int y, int on)
760 {
761     if (on) {
762         if (!guest_cursor)
763             sdl_show_cursor();
764         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
765             SDL_SetCursor(guest_sprite);
766             if (!kbd_mouse_is_absolute() && !absolute_enabled)
767                 SDL_WarpMouse(x, y);
768         }
769     } else if (gui_grab)
770         sdl_hide_cursor();
771     guest_cursor = on;
772     guest_x = x, guest_y = y;
773 }
774
775 static void sdl_mouse_define(int width, int height, int bpp,
776                              int hot_x, int hot_y,
777                              uint8_t *image, uint8_t *mask)
778 {
779     uint8_t sprite[256], *line;
780     int x, y, dst, bypl, src = 0;
781     if (guest_sprite)
782         SDL_FreeCursor(guest_sprite);
783
784     memset(sprite, 0, 256);
785     bypl = ((width * bpp + 31) >> 5) << 2;
786     for (y = 0, dst = 0; y < height; y ++, image += bypl) {
787         line = image;
788         for (x = 0; x < width; x ++, dst ++) {
789             switch (bpp) {
790             case 32:
791                 src = *(line ++); src |= *(line ++); src |= *(line ++); line++;
792                 break;
793             case 24:
794                 src = *(line ++); src |= *(line ++); src |= *(line ++);
795                 break;
796             case 16:
797             case 15:
798                 src = *(line ++); src |= *(line ++);
799                 break;
800             case 8:
801                 src = *(line ++);
802                 break;
803             case 4:
804                 src = 0xf & (line[x >> 1] >> ((x & 1)) << 2);
805                 break;
806             case 2:
807                 src = 3 & (line[x >> 2] >> ((x & 3)) << 1);
808                 break;
809             case 1:
810                 src = 1 & (line[x >> 3] >> (x & 7));
811                 break;
812             }
813             if (!src)
814                 sprite[dst >> 3] |= (1 << (~dst & 7)) & mask[dst >> 3];
815         }
816     }
817     guest_sprite = SDL_CreateCursor(sprite, mask, width, height, hot_x, hot_y);
818
819     if (guest_cursor &&
820             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
821         SDL_SetCursor(guest_sprite);
822 }
823
824 static void sdl_cleanup(void)
825 {
826     if (guest_sprite)
827         SDL_FreeCursor(guest_sprite);
828     SDL_QuitSubSystem(SDL_INIT_VIDEO);
829 }
830
831 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
832 {
833     int flags;
834     uint8_t data = 0;
835     DisplayAllocator *da;
836     const SDL_VideoInfo *vi;
837
838 #if defined(__APPLE__)
839     /* always use generic keymaps */
840     if (!keyboard_layout)
841         keyboard_layout = "en-us";
842 #endif
843     if(keyboard_layout) {
844         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
845         if (!kbd_layout)
846             exit(1);
847     }
848
849     if (no_frame)
850         gui_noframe = 1;
851
852     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
853     if (SDL_Init (flags)) {
854         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
855                 SDL_GetError());
856         exit(1);
857     }
858     vi = SDL_GetVideoInfo();
859     host_format = *(vi->vfmt);
860
861     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
862     dcl->dpy_update = sdl_update;
863     dcl->dpy_resize = sdl_resize;
864     dcl->dpy_refresh = sdl_refresh;
865     dcl->dpy_setdata = sdl_setdata;
866     dcl->dpy_fill = sdl_fill;
867     ds->mouse_set = sdl_mouse_warp;
868     ds->cursor_define = sdl_mouse_define;
869     register_displaychangelistener(ds, dcl);
870
871     da = qemu_mallocz(sizeof(DisplayAllocator));
872     da->create_displaysurface = sdl_create_displaysurface;
873     da->resize_displaysurface = sdl_resize_displaysurface;
874     da->free_displaysurface = sdl_free_displaysurface;
875     if (register_displayallocator(ds, da) == da) {
876         dpy_resize(ds);
877     }
878
879     sdl_update_caption();
880     SDL_EnableKeyRepeat(250, 50);
881     gui_grab = 0;
882
883     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
884     sdl_cursor_normal = SDL_GetCursor();
885
886     atexit(sdl_cleanup);
887     if (full_screen) {
888         gui_fullscreen = 1;
889         gui_fullscreen_initial_grab = 1;
890         sdl_grab_start();
891     }
892 }
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