xref: /illumos-kvm-cmd/ui/sdl.c (revision 68396ea9)
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 
25 /* Avoid compiler warning because macro is redefined in SDL_syswm.h. */
26 #undef WIN32_LEAN_AND_MEAN
27 
28 #include <SDL.h>
29 #include <SDL_syswm.h>
30 
31 #ifndef _WIN32
32 #include <signal.h>
33 #endif
34 
35 #include "qemu-common.h"
36 #include "console.h"
37 #include "sysemu.h"
38 #include "x_keymap.h"
39 #include "sdl_zoom.h"
40 
41 static DisplayChangeListener *dcl;
42 static SDL_Surface *real_screen;
43 static SDL_Surface *guest_screen = NULL;
44 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
45 static int last_vm_running;
46 static int gui_saved_grab;
47 static int gui_fullscreen;
48 static int gui_noframe;
49 static int gui_key_modifier_pressed;
50 static int gui_keysym;
51 static int gui_fullscreen_initial_grab;
52 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
53 static uint8_t modifiers_state[256];
54 static int width, height;
55 static SDL_Cursor *sdl_cursor_normal;
56 static SDL_Cursor *sdl_cursor_hidden;
57 static int absolute_enabled = 0;
58 static int guest_cursor = 0;
59 static int guest_x, guest_y;
60 static SDL_Cursor *guest_sprite = NULL;
61 static uint8_t allocator;
62 static SDL_PixelFormat host_format;
63 static int scaling_active = 0;
64 static Notifier mouse_mode_notifier;
65 
sdl_update(DisplayState * ds,int x,int y,int w,int h)66 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
67 {
68     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
69     SDL_Rect rec;
70     rec.x = x;
71     rec.y = y;
72     rec.w = w;
73     rec.h = h;
74 
75     if (guest_screen) {
76         if (!scaling_active) {
77             SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
78         } else {
79             if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
80                 fprintf(stderr, "Zoom blit failed\n");
81                 exit(1);
82             }
83         }
84     }
85     SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
86 }
87 
sdl_setdata(DisplayState * ds)88 static void sdl_setdata(DisplayState *ds)
89 {
90     if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
91 
92     guest_screen = SDL_CreateRGBSurfaceFrom(ds_get_data(ds), ds_get_width(ds), ds_get_height(ds),
93                                             ds_get_bits_per_pixel(ds), ds_get_linesize(ds),
94                                             ds->surface->pf.rmask, ds->surface->pf.gmask,
95                                             ds->surface->pf.bmask, ds->surface->pf.amask);
96 }
97 
do_sdl_resize(int new_width,int new_height,int bpp)98 static void do_sdl_resize(int new_width, int new_height, int bpp)
99 {
100     int flags;
101 
102     //    printf("resizing to %d %d\n", w, h);
103 
104     flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL|SDL_RESIZABLE;
105     if (gui_fullscreen)
106         flags |= SDL_FULLSCREEN;
107     if (gui_noframe)
108         flags |= SDL_NOFRAME;
109 
110     width = new_width;
111     height = new_height;
112     real_screen = SDL_SetVideoMode(width, height, bpp, flags);
113     if (!real_screen) {
114 	fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n", width,
115 		height, bpp, SDL_GetError());
116         exit(1);
117     }
118 }
119 
sdl_resize(DisplayState * ds)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 
sdl_to_qemu_pixelformat(SDL_PixelFormat * sdl_pf)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 
sdl_create_displaysurface(int width,int height)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 
sdl_free_displaysurface(DisplaySurface * surface)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 
sdl_resize_displaysurface(DisplaySurface * surface,int width,int height)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 
sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent * ev)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) & SCANCODE_KEYMASK;
252 }
253 
254 /* specific keyboard conversions from scan codes */
255 
256 #if defined(_WIN32)
257 
sdl_keyevent_to_keycode(const SDL_KeyboardEvent * ev)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 
check_for_evdev(void)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                     "qemu-devel@nongnu.org\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
check_for_evdev(void)303 static int check_for_evdev(void)
304 {
305 	return 0;
306 }
307 #endif
308 
sdl_keyevent_to_keycode(const SDL_KeyboardEvent * ev)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 
reset_keys(void)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 & SCANCODE_GREY)
347                 kbd_put_keycode(SCANCODE_EMUL0);
348             kbd_put_keycode(i | SCANCODE_UP);
349             modifiers_state[i] = 0;
350         }
351     }
352 }
353 
sdl_process_key(SDL_KeyboardEvent * ev)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 |= SCANCODE_UP;
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 #define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
392 #if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
393         /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
394     case 0x45: /* num lock */
395     case 0x3a: /* caps lock */
396         /* SDL does not send the key up event, so we generate it */
397         kbd_put_keycode(keycode);
398         kbd_put_keycode(keycode | SCANCODE_UP);
399         return;
400 #endif
401     }
402 
403     /* now send the key code */
404     if (keycode & SCANCODE_GREY)
405         kbd_put_keycode(SCANCODE_EMUL0);
406     if (ev->type == SDL_KEYUP)
407         kbd_put_keycode(keycode | SCANCODE_UP);
408     else
409         kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
410 }
411 
sdl_update_caption(void)412 static void sdl_update_caption(void)
413 {
414     char win_title[1024];
415     char icon_title[1024];
416     const char *status = "";
417 
418     if (!vm_running)
419         status = " [Stopped]";
420     else if (gui_grab) {
421         if (alt_grab)
422             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
423         else if (ctrl_grab)
424             status = " - Press Right-Ctrl to exit mouse grab";
425         else
426             status = " - Press Ctrl-Alt to exit mouse grab";
427     }
428 
429     if (qemu_name) {
430         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
431         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
432     } else {
433         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
434         snprintf(icon_title, sizeof(icon_title), "QEMU");
435     }
436 
437     SDL_WM_SetCaption(win_title, icon_title);
438 }
439 
sdl_hide_cursor(void)440 static void sdl_hide_cursor(void)
441 {
442     if (!cursor_hide)
443         return;
444 
445     if (kbd_mouse_is_absolute()) {
446         SDL_ShowCursor(1);
447         SDL_SetCursor(sdl_cursor_hidden);
448     } else {
449         SDL_ShowCursor(0);
450     }
451 }
452 
sdl_show_cursor(void)453 static void sdl_show_cursor(void)
454 {
455     if (!cursor_hide)
456         return;
457 
458     if (!kbd_mouse_is_absolute()) {
459         SDL_ShowCursor(1);
460         if (guest_cursor &&
461                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
462             SDL_SetCursor(guest_sprite);
463         else
464             SDL_SetCursor(sdl_cursor_normal);
465     }
466 }
467 
sdl_grab_start(void)468 static void sdl_grab_start(void)
469 {
470     if (guest_cursor) {
471         SDL_SetCursor(guest_sprite);
472         if (!kbd_mouse_is_absolute() && !absolute_enabled)
473             SDL_WarpMouse(guest_x, guest_y);
474     } else
475         sdl_hide_cursor();
476 
477     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
478         gui_grab = 1;
479         sdl_update_caption();
480     } else
481         sdl_show_cursor();
482 }
483 
sdl_grab_end(void)484 static void sdl_grab_end(void)
485 {
486     SDL_WM_GrabInput(SDL_GRAB_OFF);
487     gui_grab = 0;
488     sdl_show_cursor();
489     sdl_update_caption();
490 }
491 
sdl_mouse_mode_change(Notifier * notify)492 static void sdl_mouse_mode_change(Notifier *notify)
493 {
494     if (kbd_mouse_is_absolute()) {
495         if (!absolute_enabled) {
496             sdl_hide_cursor();
497             if (gui_grab) {
498                 sdl_grab_end();
499             }
500             absolute_enabled = 1;
501         }
502     } else if (absolute_enabled) {
503 	sdl_show_cursor();
504 	absolute_enabled = 0;
505     }
506 }
507 
sdl_send_mouse_event(int dx,int dy,int dz,int x,int y,int state)508 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
509 {
510     int buttons;
511     buttons = 0;
512     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
513         buttons |= MOUSE_EVENT_LBUTTON;
514     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
515         buttons |= MOUSE_EVENT_RBUTTON;
516     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
517         buttons |= MOUSE_EVENT_MBUTTON;
518 
519     if (kbd_mouse_is_absolute()) {
520        dx = x * 0x7FFF / (width - 1);
521        dy = y * 0x7FFF / (height - 1);
522     } else if (guest_cursor) {
523         x -= guest_x;
524         y -= guest_y;
525         guest_x += x;
526         guest_y += y;
527         dx = x;
528         dy = y;
529     }
530 
531     kbd_mouse_event(dx, dy, dz, buttons);
532 }
533 
toggle_full_screen(DisplayState * ds)534 static void toggle_full_screen(DisplayState *ds)
535 {
536     gui_fullscreen = !gui_fullscreen;
537     do_sdl_resize(real_screen->w, real_screen->h, real_screen->format->BitsPerPixel);
538     if (gui_fullscreen) {
539         scaling_active = 0;
540         gui_saved_grab = gui_grab;
541         sdl_grab_start();
542     } else {
543         if (!gui_saved_grab)
544             sdl_grab_end();
545     }
546     vga_hw_invalidate();
547     vga_hw_update();
548 }
549 
sdl_refresh(DisplayState * ds)550 static void sdl_refresh(DisplayState *ds)
551 {
552     SDL_Event ev1, *ev = &ev1;
553     int mod_state;
554     int buttonstate = SDL_GetMouseState(NULL, NULL);
555 
556     if (last_vm_running != vm_running) {
557         last_vm_running = vm_running;
558         sdl_update_caption();
559     }
560 
561     vga_hw_update();
562     SDL_EnableUNICODE(!is_graphic_console());
563 
564     while (SDL_PollEvent(ev)) {
565         switch (ev->type) {
566         case SDL_VIDEOEXPOSE:
567             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
568             break;
569         case SDL_KEYDOWN:
570         case SDL_KEYUP:
571             if (ev->type == SDL_KEYDOWN) {
572                 if (alt_grab) {
573                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
574                                 (gui_grab_code | KMOD_LSHIFT);
575                 } else if (ctrl_grab) {
576                     mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
577                 } else {
578                     mod_state = (SDL_GetModState() & gui_grab_code) ==
579                                 gui_grab_code;
580                 }
581                 gui_key_modifier_pressed = mod_state;
582                 if (gui_key_modifier_pressed) {
583                     int keycode;
584                     keycode = sdl_keyevent_to_keycode(&ev->key);
585                     switch(keycode) {
586                     case 0x21: /* 'f' key on US keyboard */
587                         toggle_full_screen(ds);
588                         gui_keysym = 1;
589                         break;
590                     case 0x16: /* 'u' key on US keyboard */
591                         scaling_active = 0;
592                         sdl_resize(ds);
593                         vga_hw_invalidate();
594                         vga_hw_update();
595                         break;
596                     case 0x02 ... 0x0a: /* '1' to '9' keys */
597                         /* Reset the modifiers sent to the current console */
598                         reset_keys();
599                         console_select(keycode - 0x02);
600                         if (!is_graphic_console()) {
601                             /* display grab if going to a text console */
602                             if (gui_grab)
603                                 sdl_grab_end();
604                         }
605                         gui_keysym = 1;
606                         break;
607                     default:
608                         break;
609                     }
610                 } else if (!is_graphic_console()) {
611                     int keysym;
612                     keysym = 0;
613                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
614                         switch(ev->key.keysym.sym) {
615                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
616                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
617                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
618                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
619                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
620                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
621                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
622                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
623                         default: break;
624                         }
625                     } else {
626                         switch(ev->key.keysym.sym) {
627                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
628                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
629                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
630                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
631                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
632                         case SDLK_END: keysym = QEMU_KEY_END; break;
633                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
634                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
635                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
636                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
637                         default: break;
638                         }
639                     }
640                     if (keysym) {
641                         kbd_put_keysym(keysym);
642                     } else if (ev->key.keysym.unicode != 0) {
643                         kbd_put_keysym(ev->key.keysym.unicode);
644                     }
645                 }
646             } else if (ev->type == SDL_KEYUP) {
647                 if (!alt_grab) {
648                     mod_state = (ev->key.keysym.mod & gui_grab_code);
649                 } else {
650                     mod_state = (ev->key.keysym.mod &
651                                  (gui_grab_code | KMOD_LSHIFT));
652                 }
653                 if (!mod_state) {
654                     if (gui_key_modifier_pressed) {
655                         gui_key_modifier_pressed = 0;
656                         if (gui_keysym == 0) {
657                             /* exit/enter grab if pressing Ctrl-Alt */
658                             if (!gui_grab) {
659                                 /* if the application is not active,
660                                    do not try to enter grab state. It
661                                    prevents
662                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
663                                    from blocking all the application
664                                    (SDL bug). */
665                                 if (SDL_GetAppState() & SDL_APPACTIVE)
666                                     sdl_grab_start();
667                             } else {
668                                 sdl_grab_end();
669                             }
670                             /* SDL does not send back all the
671                                modifiers key, so we must correct it */
672                             reset_keys();
673                             break;
674                         }
675                         gui_keysym = 0;
676                     }
677                 }
678             }
679             if (is_graphic_console() && !gui_keysym)
680                 sdl_process_key(&ev->key);
681             break;
682         case SDL_QUIT:
683             if (!no_quit)
684                 qemu_system_shutdown_request();
685             break;
686         case SDL_MOUSEMOTION:
687             if (gui_grab || kbd_mouse_is_absolute() ||
688                 absolute_enabled) {
689                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
690                        ev->motion.x, ev->motion.y, ev->motion.state);
691             }
692             break;
693         case SDL_MOUSEBUTTONDOWN:
694         case SDL_MOUSEBUTTONUP:
695             {
696                 SDL_MouseButtonEvent *bev = &ev->button;
697                 if (!gui_grab && !kbd_mouse_is_absolute()) {
698                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
699                         (bev->button == SDL_BUTTON_LEFT)) {
700                         /* start grabbing all events */
701                         sdl_grab_start();
702                     }
703                 } else {
704                     int dz;
705                     dz = 0;
706                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
707                         buttonstate |= SDL_BUTTON(bev->button);
708                     } else {
709                         buttonstate &= ~SDL_BUTTON(bev->button);
710                     }
711 #ifdef SDL_BUTTON_WHEELUP
712                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
713                         dz = -1;
714                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
715                         dz = 1;
716                     }
717 #endif
718                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
719                 }
720             }
721             break;
722         case SDL_ACTIVEEVENT:
723             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
724                 !ev->active.gain && !gui_fullscreen_initial_grab) {
725                 sdl_grab_end();
726             }
727             if (ev->active.state & SDL_APPACTIVE) {
728                 if (ev->active.gain) {
729                     /* Back to default interval */
730                     dcl->gui_timer_interval = 0;
731                     dcl->idle = 0;
732                 } else {
733                     /* Sleeping interval */
734                     dcl->gui_timer_interval = 500;
735                     dcl->idle = 1;
736                 }
737             }
738             break;
739 	case SDL_VIDEORESIZE:
740         {
741 	    SDL_ResizeEvent *rev = &ev->resize;
742             int bpp = real_screen->format->BitsPerPixel;
743             if (bpp != 16 && bpp != 32)
744                 bpp = 32;
745             do_sdl_resize(rev->w, rev->h, bpp);
746             scaling_active = 1;
747             if (!is_buffer_shared(ds->surface)) {
748                 ds->surface = qemu_resize_displaysurface(ds, ds_get_width(ds), ds_get_height(ds));
749                 dpy_resize(ds);
750             }
751             vga_hw_invalidate();
752             vga_hw_update();
753             break;
754         }
755         default:
756             break;
757         }
758     }
759 }
760 
sdl_fill(DisplayState * ds,int x,int y,int w,int h,uint32_t c)761 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
762 {
763     SDL_Rect dst = { x, y, w, h };
764     SDL_FillRect(real_screen, &dst, c);
765 }
766 
sdl_mouse_warp(int x,int y,int on)767 static void sdl_mouse_warp(int x, int y, int on)
768 {
769     if (on) {
770         if (!guest_cursor)
771             sdl_show_cursor();
772         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
773             SDL_SetCursor(guest_sprite);
774             if (!kbd_mouse_is_absolute() && !absolute_enabled)
775                 SDL_WarpMouse(x, y);
776         }
777     } else if (gui_grab)
778         sdl_hide_cursor();
779     guest_cursor = on;
780     guest_x = x, guest_y = y;
781 }
782 
sdl_mouse_define(QEMUCursor * c)783 static void sdl_mouse_define(QEMUCursor *c)
784 {
785     uint8_t *image, *mask;
786     int bpl;
787 
788     if (guest_sprite)
789         SDL_FreeCursor(guest_sprite);
790 
791     bpl = cursor_get_mono_bpl(c);
792     image = qemu_mallocz(bpl * c->height);
793     mask  = qemu_mallocz(bpl * c->height);
794     cursor_get_mono_image(c, 0x000000, image);
795     cursor_get_mono_mask(c, 0, mask);
796     guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
797                                     c->hot_x, c->hot_y);
798     qemu_free(image);
799     qemu_free(mask);
800 
801     if (guest_cursor &&
802             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
803         SDL_SetCursor(guest_sprite);
804 }
805 
sdl_cleanup(void)806 static void sdl_cleanup(void)
807 {
808     if (guest_sprite)
809         SDL_FreeCursor(guest_sprite);
810     SDL_QuitSubSystem(SDL_INIT_VIDEO);
811 }
812 
sdl_display_init(DisplayState * ds,int full_screen,int no_frame)813 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
814 {
815     int flags;
816     uint8_t data = 0;
817     DisplayAllocator *da;
818     const SDL_VideoInfo *vi;
819 
820 #if defined(__APPLE__)
821     /* always use generic keymaps */
822     if (!keyboard_layout)
823         keyboard_layout = "en-us";
824 #endif
825     if(keyboard_layout) {
826         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
827         if (!kbd_layout)
828             exit(1);
829     }
830 
831     if (no_frame)
832         gui_noframe = 1;
833 
834     if (!full_screen) {
835         setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
836     }
837 
838     /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
839      * This requires SDL >= 1.2.14. */
840     setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
841 
842     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
843     if (SDL_Init (flags)) {
844         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
845                 SDL_GetError());
846         exit(1);
847     }
848     vi = SDL_GetVideoInfo();
849     host_format = *(vi->vfmt);
850 
851     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
852     dcl->dpy_update = sdl_update;
853     dcl->dpy_resize = sdl_resize;
854     dcl->dpy_refresh = sdl_refresh;
855     dcl->dpy_setdata = sdl_setdata;
856     dcl->dpy_fill = sdl_fill;
857     ds->mouse_set = sdl_mouse_warp;
858     ds->cursor_define = sdl_mouse_define;
859     register_displaychangelistener(ds, dcl);
860 
861     da = qemu_mallocz(sizeof(DisplayAllocator));
862     da->create_displaysurface = sdl_create_displaysurface;
863     da->resize_displaysurface = sdl_resize_displaysurface;
864     da->free_displaysurface = sdl_free_displaysurface;
865     if (register_displayallocator(ds, da) == da) {
866         dpy_resize(ds);
867     }
868 
869     mouse_mode_notifier.notify = sdl_mouse_mode_change;
870     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
871 
872     sdl_update_caption();
873     SDL_EnableKeyRepeat(250, 50);
874     gui_grab = 0;
875 
876     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
877     sdl_cursor_normal = SDL_GetCursor();
878 
879     atexit(sdl_cleanup);
880     if (full_screen) {
881         gui_fullscreen = 1;
882         gui_fullscreen_initial_grab = 1;
883         sdl_grab_start();
884     }
885 }
886