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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\n");
116         exit(1);
117     }
118 }
119
120 static void sdl_resize(DisplayState *ds)
121 {
122     if  (!allocator) {
123         if (!scaling_active)
124             do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
125         else if (real_screen->format->BitsPerPixel != ds_get_bits_per_pixel(ds))
126             do_sdl_resize(real_screen->w, real_screen->h, ds_get_bits_per_pixel(ds));
127         sdl_setdata(ds);
128     } else {
129         if (guest_screen != NULL) {
130             SDL_FreeSurface(guest_screen);
131             guest_screen = NULL;
132         }
133     }
134 }
135
136 static PixelFormat sdl_to_qemu_pixelformat(SDL_PixelFormat *sdl_pf)
137 {
138     PixelFormat qemu_pf;
139
140     memset(&qemu_pf, 0x00, sizeof(PixelFormat));
141
142     qemu_pf.bits_per_pixel = sdl_pf->BitsPerPixel;
143     qemu_pf.bytes_per_pixel = sdl_pf->BytesPerPixel;
144     qemu_pf.depth = (qemu_pf.bits_per_pixel) == 32 ? 24 : (qemu_pf.bits_per_pixel);
145
146     qemu_pf.rmask = sdl_pf->Rmask;
147     qemu_pf.gmask = sdl_pf->Gmask;
148     qemu_pf.bmask = sdl_pf->Bmask;
149     qemu_pf.amask = sdl_pf->Amask;
150
151     qemu_pf.rshift = sdl_pf->Rshift;
152     qemu_pf.gshift = sdl_pf->Gshift;
153     qemu_pf.bshift = sdl_pf->Bshift;
154     qemu_pf.ashift = sdl_pf->Ashift;
155
156     qemu_pf.rbits = 8 - sdl_pf->Rloss;
157     qemu_pf.gbits = 8 - sdl_pf->Gloss;
158     qemu_pf.bbits = 8 - sdl_pf->Bloss;
159     qemu_pf.abits = 8 - sdl_pf->Aloss;
160
161     qemu_pf.rmax = ((1 << qemu_pf.rbits) - 1);
162     qemu_pf.gmax = ((1 << qemu_pf.gbits) - 1);
163     qemu_pf.bmax = ((1 << qemu_pf.bbits) - 1);
164     qemu_pf.amax = ((1 << qemu_pf.abits) - 1);
165
166     return qemu_pf;
167 }
168
169 static DisplaySurface* sdl_create_displaysurface(int width, int height)
170 {
171     DisplaySurface *surface = (DisplaySurface*) qemu_mallocz(sizeof(DisplaySurface));
172     if (surface == NULL) {
173         fprintf(stderr, "sdl_create_displaysurface: malloc failed\n");
174         exit(1);
175     }
176
177     surface->width = width;
178     surface->height = height;
179     
180     if (scaling_active) {
181         if (host_format.BytesPerPixel != 2 && host_format.BytesPerPixel != 4) {
182             surface->linesize = width * 4;
183             surface->pf = qemu_default_pixelformat(32);
184         } else {
185             surface->linesize = width * host_format.BytesPerPixel;
186             surface->pf = sdl_to_qemu_pixelformat(&host_format);
187         }
188 #ifdef HOST_WORDS_BIGENDIAN
189         surface->flags = QEMU_ALLOCATED_FLAG | QEMU_BIG_ENDIAN_FLAG;
190 #else
191         surface->flags = QEMU_ALLOCATED_FLAG;
192 #endif
193         surface->data = (uint8_t*) qemu_mallocz(surface->linesize * surface->height);
194
195         return surface;
196     }
197
198     if (host_format.BitsPerPixel == 16)
199         do_sdl_resize(width, height, 16);
200     else
201         do_sdl_resize(width, height, 32);
202
203     surface->pf = sdl_to_qemu_pixelformat(real_screen->format);
204     surface->linesize = real_screen->pitch;
205     surface->data = real_screen->pixels;
206
207 #ifdef HOST_WORDS_BIGENDIAN
208     surface->flags = QEMU_REALPIXELS_FLAG | QEMU_BIG_ENDIAN_FLAG;
209 #else
210     surface->flags = QEMU_REALPIXELS_FLAG;
211 #endif
212     allocator = 1;
213
214     return surface;
215 }
216
217 static void sdl_free_displaysurface(DisplaySurface *surface)
218 {
219     allocator = 0;
220     if (surface == NULL)
221         return;
222
223     if (surface->flags & QEMU_ALLOCATED_FLAG)
224         qemu_free(surface->data);
225     qemu_free(surface);
226 }
227
228 static DisplaySurface* sdl_resize_displaysurface(DisplaySurface *surface, int width, int height)
229 {
230     sdl_free_displaysurface(surface);
231     return sdl_create_displaysurface(width, height);
232 }
233
234 /* generic keyboard conversion */
235
236 #include "sdl_keysym.h"
237
238 static kbd_layout_t *kbd_layout = NULL;
239
240 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
241 {
242     int keysym;
243     /* workaround for X11+SDL bug with AltGR */
244     keysym = ev->keysym.sym;
245     if (keysym == 0 && ev->keysym.scancode == 113)
246         keysym = SDLK_MODE;
247     /* For Japanese key '\' and '|' */
248     if (keysym == 92 && ev->keysym.scancode == 133) {
249         keysym = 0xa5;
250     }
251     return keysym2scancode(kbd_layout, keysym);
252 }
253
254 /* specific keyboard conversions from scan codes */
255
256 #if defined(_WIN32)
257
258 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
259 {
260     return ev->keysym.scancode;
261 }
262
263 #else
264
265 #if defined(SDL_VIDEO_DRIVER_X11)
266 #include <X11/XKBlib.h>
267
268 static int check_for_evdev(void)
269 {
270     SDL_SysWMinfo info;
271     XkbDescPtr desc = NULL;
272     int has_evdev = 0;
273     char *keycodes = NULL;
274
275     SDL_VERSION(&info.version);
276     if (!SDL_GetWMInfo(&info)) {
277         return 0;
278     }
279     desc = XkbGetKeyboard(info.info.x11.display,
280                           XkbGBN_AllComponentsMask,
281                           XkbUseCoreKbd);
282     if (desc && desc->names) {
283         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
284         if (keycodes == NULL) {
285             fprintf(stderr, "could not lookup keycode name\n");
286         } else if (strstart(keycodes, "evdev", NULL)) {
287             has_evdev = 1;
288         } else if (!strstart(keycodes, "xfree86", NULL)) {
289             fprintf(stderr, "unknown keycodes `%s', please report to "
290                     "[email protected]\n", keycodes);
291         }
292     }
293
294     if (desc) {
295         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
296     }
297     if (keycodes) {
298         XFree(keycodes);
299     }
300     return has_evdev;
301 }
302 #else
303 static int check_for_evdev(void)
304 {
305         return 0;
306 }
307 #endif
308
309 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
310 {
311     int keycode;
312     static int has_evdev = -1;
313
314     if (has_evdev == -1)
315         has_evdev = check_for_evdev();
316
317     keycode = ev->keysym.scancode;
318
319     if (keycode < 9) {
320         keycode = 0;
321     } else if (keycode < 97) {
322         keycode -= 8; /* just an offset */
323     } else if (keycode < 158) {
324         /* use conversion table */
325         if (has_evdev)
326             keycode = translate_evdev_keycode(keycode - 97);
327         else
328             keycode = translate_xfree86_keycode(keycode - 97);
329     } else if (keycode == 208) { /* Hiragana_Katakana */
330         keycode = 0x70;
331     } else if (keycode == 211) { /* backslash */
332         keycode = 0x73;
333     } else {
334         keycode = 0;
335     }
336     return keycode;
337 }
338
339 #endif
340
341 static void reset_keys(void)
342 {
343     int i;
344     for(i = 0; i < 256; i++) {
345         if (modifiers_state[i]) {
346             if (i & 0x80)
347                 kbd_put_keycode(0xe0);
348             kbd_put_keycode(i | 0x80);
349             modifiers_state[i] = 0;
350         }
351     }
352 }
353
354 static void sdl_process_key(SDL_KeyboardEvent *ev)
355 {
356     int keycode, v;
357
358     if (ev->keysym.sym == SDLK_PAUSE) {
359         /* specific case */
360         v = 0;
361         if (ev->type == SDL_KEYUP)
362             v |= 0x80;
363         kbd_put_keycode(0xe1);
364         kbd_put_keycode(0x1d | v);
365         kbd_put_keycode(0x45 | v);
366         return;
367     }
368
369     if (kbd_layout) {
370         keycode = sdl_keyevent_to_keycode_generic(ev);
371     } else {
372         keycode = sdl_keyevent_to_keycode(ev);
373     }
374
375     switch(keycode) {
376     case 0x00:
377         /* sent when leaving window: reset the modifiers state */
378         reset_keys();
379         return;
380     case 0x2a:                          /* Left Shift */
381     case 0x36:                          /* Right Shift */
382     case 0x1d:                          /* Left CTRL */
383     case 0x9d:                          /* Right CTRL */
384     case 0x38:                          /* Left ALT */
385     case 0xb8:                         /* Right ALT */
386         if (ev->type == SDL_KEYUP)
387             modifiers_state[keycode] = 0;
388         else
389             modifiers_state[keycode] = 1;
390         break;
391     case 0x45: /* num lock */
392     case 0x3a: /* caps lock */
393         /* SDL does not send the key up event, so we generate it */
394         kbd_put_keycode(keycode);
395         kbd_put_keycode(keycode | 0x80);
396         return;
397     }
398
399     /* now send the key code */
400     if (keycode & 0x80)
401         kbd_put_keycode(0xe0);
402     if (ev->type == SDL_KEYUP)
403         kbd_put_keycode(keycode | 0x80);
404     else
405         kbd_put_keycode(keycode & 0x7f);
406 }
407
408 static void sdl_update_caption(void)
409 {
410     char win_title[1024];
411     char icon_title[1024];
412     const char *status = "";
413
414     if (!vm_running)
415         status = " [Stopped]";
416     else if (gui_grab) {
417         if (alt_grab)
418             status = " - Press Ctrl-Alt-Shift to exit grab";
419         else if (ctrl_grab)
420             status = " - Press Right-Ctrl to exit grab";
421         else
422             status = " - Press Ctrl-Alt to exit grab";
423     }
424
425     if (qemu_name) {
426         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
427         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
428     } else {
429         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
430         snprintf(icon_title, sizeof(icon_title), "QEMU");
431     }
432
433     SDL_WM_SetCaption(win_title, icon_title);
434 }
435
436 static void sdl_hide_cursor(void)
437 {
438     if (!cursor_hide)
439         return;
440
441     if (kbd_mouse_is_absolute()) {
442         SDL_ShowCursor(1);
443         SDL_SetCursor(sdl_cursor_hidden);
444     } else {
445         SDL_ShowCursor(0);
446     }
447 }
448
449 static void sdl_show_cursor(void)
450 {
451     if (!cursor_hide)
452         return;
453
454     if (!kbd_mouse_is_absolute()) {
455         SDL_ShowCursor(1);
456         if (guest_cursor &&
457                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
458             SDL_SetCursor(guest_sprite);
459         else
460             SDL_SetCursor(sdl_cursor_normal);
461     }
462 }
463
464 static void sdl_grab_start(void)
465 {
466     if (guest_cursor) {
467         SDL_SetCursor(guest_sprite);
468         if (!kbd_mouse_is_absolute() && !absolute_enabled)
469             SDL_WarpMouse(guest_x, guest_y);
470     } else
471         sdl_hide_cursor();
472
473     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
474         gui_grab = 1;
475         sdl_update_caption();
476     } else
477         sdl_show_cursor();
478 }
479
480 static void sdl_grab_end(void)
481 {
482     SDL_WM_GrabInput(SDL_GRAB_OFF);
483     gui_grab = 0;
484     sdl_show_cursor();
485     sdl_update_caption();
486 }
487
488 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
489 {
490     int buttons;
491     buttons = 0;
492     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
493         buttons |= MOUSE_EVENT_LBUTTON;
494     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
495         buttons |= MOUSE_EVENT_RBUTTON;
496     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
497         buttons |= MOUSE_EVENT_MBUTTON;
498
499     if (kbd_mouse_is_absolute()) {
500         if (!absolute_enabled) {
501             sdl_hide_cursor();
502             if (gui_grab) {
503                 sdl_grab_end();
504             }
505             absolute_enabled = 1;
506         }
507
508        dx = x * 0x7FFF / (width - 1);
509        dy = y * 0x7FFF / (height - 1);
510     } else if (absolute_enabled) {
511         sdl_show_cursor();
512         absolute_enabled = 0;
513     } else if (guest_cursor) {
514         x -= guest_x;
515         y -= guest_y;
516         guest_x += x;
517         guest_y += y;
518         dx = x;
519         dy = y;
520     }
521
522     kbd_mouse_event(dx, dy, dz, buttons);
523 }
524
525 static void toggle_full_screen(DisplayState *ds)
526 {
527     gui_fullscreen = !gui_fullscreen;
528     if (gui_fullscreen) {
529         scaling_active = 0;
530         gui_saved_grab = gui_grab;
531         sdl_grab_start();
532     } else {
533         if (!gui_saved_grab)
534             sdl_grab_end();
535     }
536     vga_hw_invalidate();
537     vga_hw_update();
538 }
539
540 static void sdl_refresh(DisplayState *ds)
541 {
542     SDL_Event ev1, *ev = &ev1;
543     int mod_state;
544     int buttonstate = SDL_GetMouseState(NULL, NULL);
545
546     if (last_vm_running != vm_running) {
547         last_vm_running = vm_running;
548         sdl_update_caption();
549     }
550
551     vga_hw_update();
552     SDL_EnableUNICODE(!is_graphic_console());
553
554     while (SDL_PollEvent(ev)) {
555         switch (ev->type) {
556         case SDL_VIDEOEXPOSE:
557             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
558             break;
559         case SDL_KEYDOWN:
560         case SDL_KEYUP:
561             if (ev->type == SDL_KEYDOWN) {
562                 if (alt_grab) {
563                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
564                                 (gui_grab_code | KMOD_LSHIFT);
565                 } else if (ctrl_grab) {
566                     mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
567                 } else {
568                     mod_state = (SDL_GetModState() & gui_grab_code) ==
569                                 gui_grab_code;
570                 }
571                 gui_key_modifier_pressed = mod_state;
572                 if (gui_key_modifier_pressed) {
573                     int keycode;
574                     keycode = sdl_keyevent_to_keycode(&ev->key);
575                     switch(keycode) {
576                     case 0x21: /* 'f' key on US keyboard */
577                         toggle_full_screen(ds);
578                         gui_keysym = 1;
579                         break;
580                     case 0x16: /* 'u' key on US keyboard */
581                         scaling_active = 0;
582                         sdl_resize(ds);
583                         vga_hw_invalidate();
584                         vga_hw_update();
585                         break;
586                     case 0x02 ... 0x0a: /* '1' to '9' keys */
587                         /* Reset the modifiers sent to the current console */
588                         reset_keys();
589                         console_select(keycode - 0x02);
590                         if (!is_graphic_console()) {
591                             /* display grab if going to a text console */
592                             if (gui_grab)
593                                 sdl_grab_end();
594                         }
595                         gui_keysym = 1;
596                         break;
597                     default:
598                         break;
599                     }
600                 } else if (!is_graphic_console()) {
601                     int keysym;
602                     keysym = 0;
603                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
604                         switch(ev->key.keysym.sym) {
605                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
606                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
607                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
608                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
609                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
610                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
611                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
612                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
613                         default: break;
614                         }
615                     } else {
616                         switch(ev->key.keysym.sym) {
617                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
618                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
619                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
620                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
621                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
622                         case SDLK_END: keysym = QEMU_KEY_END; break;
623                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
624                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
625                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
626                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
627                         default: break;
628                         }
629                     }
630                     if (keysym) {
631                         kbd_put_keysym(keysym);
632                     } else if (ev->key.keysym.unicode != 0) {
633                         kbd_put_keysym(ev->key.keysym.unicode);
634                     }
635                 }
636             } else if (ev->type == SDL_KEYUP) {
637                 if (!alt_grab) {
638                     mod_state = (ev->key.keysym.mod & gui_grab_code);
639                 } else {
640                     mod_state = (ev->key.keysym.mod &
641                                  (gui_grab_code | KMOD_LSHIFT));
642                 }
643                 if (!mod_state) {
644                     if (gui_key_modifier_pressed) {
645                         gui_key_modifier_pressed = 0;
646                         if (gui_keysym == 0) {
647                             /* exit/enter grab if pressing Ctrl-Alt */
648                             if (!gui_grab) {
649                                 /* if the application is not active,
650                                    do not try to enter grab state. It
651                                    prevents
652                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
653                                    from blocking all the application
654                                    (SDL bug). */
655                                 if (SDL_GetAppState() & SDL_APPACTIVE)
656                                     sdl_grab_start();
657                             } else {
658                                 sdl_grab_end();
659                             }
660                             /* SDL does not send back all the
661                                modifiers key, so we must correct it */
662                             reset_keys();
663                             break;
664                         }
665                         gui_keysym = 0;
666                     }
667                 }
668             }
669             if (is_graphic_console() && !gui_keysym)
670                 sdl_process_key(&ev->key);
671             break;
672         case SDL_QUIT:
673             if (!no_quit)
674                 qemu_system_shutdown_request();
675             break;
676         case SDL_MOUSEMOTION:
677             if (gui_grab || kbd_mouse_is_absolute() ||
678                 absolute_enabled) {
679                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
680                        ev->motion.x, ev->motion.y, ev->motion.state);
681             }
682             break;
683         case SDL_MOUSEBUTTONDOWN:
684         case SDL_MOUSEBUTTONUP:
685             {
686                 SDL_MouseButtonEvent *bev = &ev->button;
687                 if (!gui_grab && !kbd_mouse_is_absolute()) {
688                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
689                         (bev->button == SDL_BUTTON_LEFT)) {
690                         /* start grabbing all events */
691                         sdl_grab_start();
692                     }
693                 } else {
694                     int dz;
695                     dz = 0;
696                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
697                         buttonstate |= SDL_BUTTON(bev->button);
698                     } else {
699                         buttonstate &= ~SDL_BUTTON(bev->button);
700                     }
701 #ifdef SDL_BUTTON_WHEELUP
702                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
703                         dz = -1;
704                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
705                         dz = 1;
706                     }
707 #endif
708                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
709                 }
710             }
711             break;
712         case SDL_ACTIVEEVENT:
713             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
714                 !ev->active.gain && !gui_fullscreen_initial_grab) {
715                 sdl_grab_end();
716             }
717             if (ev->active.state & SDL_APPACTIVE) {
718                 if (ev->active.gain) {
719                     /* Back to default interval */
720                     dcl->gui_timer_interval = 0;
721                     dcl->idle = 0;
722                 } else {
723                     /* Sleeping interval */
724                     dcl->gui_timer_interval = 500;
725                     dcl->idle = 1;
726                 }
727             }
728             break;
729         case SDL_VIDEORESIZE:
730         {
731             SDL_ResizeEvent *rev = &ev->resize;
732             int bpp = real_screen->format->BitsPerPixel;
733             if (bpp != 16 && bpp != 32)
734                 bpp = 32;
735             do_sdl_resize(rev->w, rev->h, bpp);
736             scaling_active = 1;
737             if (!is_buffer_shared(ds->surface)) {
738                 ds->surface = qemu_resize_displaysurface(ds, ds_get_width(ds), ds_get_height(ds));
739                 dpy_resize(ds);
740             }
741             vga_hw_invalidate();
742             vga_hw_update();
743             break;
744         }
745         default:
746             break;
747         }
748     }
749 }
750
751 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
752 {
753     SDL_Rect dst = { x, y, w, h };
754     SDL_FillRect(real_screen, &dst, c);
755 }
756
757 static void sdl_mouse_warp(int x, int y, int on)
758 {
759     if (on) {
760         if (!guest_cursor)
761             sdl_show_cursor();
762         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
763             SDL_SetCursor(guest_sprite);
764             if (!kbd_mouse_is_absolute() && !absolute_enabled)
765                 SDL_WarpMouse(x, y);
766         }
767     } else if (gui_grab)
768         sdl_hide_cursor();
769     guest_cursor = on;
770     guest_x = x, guest_y = y;
771 }
772
773 static void sdl_mouse_define(int width, int height, int bpp,
774                              int hot_x, int hot_y,
775                              uint8_t *image, uint8_t *mask)
776 {
777     uint8_t sprite[256], *line;
778     int x, y, dst, bypl, src = 0;
779     if (guest_sprite)
780         SDL_FreeCursor(guest_sprite);
781
782     memset(sprite, 0, 256);
783     bypl = ((width * bpp + 31) >> 5) << 2;
784     for (y = 0, dst = 0; y < height; y ++, image += bypl) {
785         line = image;
786         for (x = 0; x < width; x ++, dst ++) {
787             switch (bpp) {
788             case 32:
789                 src = *(line ++); src |= *(line ++); src |= *(line ++); line++;
790                 break;
791             case 24:
792                 src = *(line ++); src |= *(line ++); src |= *(line ++);
793                 break;
794             case 16:
795             case 15:
796                 src = *(line ++); src |= *(line ++);
797                 break;
798             case 8:
799                 src = *(line ++);
800                 break;
801             case 4:
802                 src = 0xf & (line[x >> 1] >> ((x & 1)) << 2);
803                 break;
804             case 2:
805                 src = 3 & (line[x >> 2] >> ((x & 3)) << 1);
806                 break;
807             case 1:
808                 src = 1 & (line[x >> 3] >> (x & 7));
809                 break;
810             }
811             if (!src)
812                 sprite[dst >> 3] |= (1 << (~dst & 7)) & mask[dst >> 3];
813         }
814     }
815     guest_sprite = SDL_CreateCursor(sprite, mask, width, height, hot_x, hot_y);
816
817     if (guest_cursor &&
818             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
819         SDL_SetCursor(guest_sprite);
820 }
821
822 static void sdl_cleanup(void)
823 {
824     if (guest_sprite)
825         SDL_FreeCursor(guest_sprite);
826     SDL_QuitSubSystem(SDL_INIT_VIDEO);
827 }
828
829 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
830 {
831     int flags;
832     uint8_t data = 0;
833     DisplayAllocator *da;
834     const SDL_VideoInfo *vi;
835
836 #if defined(__APPLE__)
837     /* always use generic keymaps */
838     if (!keyboard_layout)
839         keyboard_layout = "en-us";
840 #endif
841     if(keyboard_layout) {
842         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
843         if (!kbd_layout)
844             exit(1);
845     }
846
847     if (no_frame)
848         gui_noframe = 1;
849
850     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
851     if (SDL_Init (flags)) {
852         fprintf(stderr, "Could not initialize SDL - exiting\n");
853         exit(1);
854     }
855     vi = SDL_GetVideoInfo();
856     host_format = *(vi->vfmt);
857
858     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
859     dcl->dpy_update = sdl_update;
860     dcl->dpy_resize = sdl_resize;
861     dcl->dpy_refresh = sdl_refresh;
862     dcl->dpy_setdata = sdl_setdata;
863     dcl->dpy_fill = sdl_fill;
864     ds->mouse_set = sdl_mouse_warp;
865     ds->cursor_define = sdl_mouse_define;
866     register_displaychangelistener(ds, dcl);
867
868     da = qemu_mallocz(sizeof(DisplayAllocator));
869     da->create_displaysurface = sdl_create_displaysurface;
870     da->resize_displaysurface = sdl_resize_displaysurface;
871     da->free_displaysurface = sdl_free_displaysurface;
872     if (register_displayallocator(ds, da) == da) {
873         DisplaySurface *surf;
874         surf = sdl_create_displaysurface(ds_get_width(ds), ds_get_height(ds));
875         defaultallocator_free_displaysurface(ds->surface);
876         ds->surface = surf;
877         dpy_resize(ds);
878     }
879
880     sdl_update_caption();
881     SDL_EnableKeyRepeat(250, 50);
882     gui_grab = 0;
883
884     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
885     sdl_cursor_normal = SDL_GetCursor();
886
887     atexit(sdl_cleanup);
888     if (full_screen) {
889         gui_fullscreen = 1;
890         gui_fullscreen_initial_grab = 1;
891         sdl_grab_start();
892     }
893 }
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