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[qemu/mini2440.git] / sdl.c
blobec4f93c5efb1d38f0b470b7c77224f1d5ba93dde
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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.
24 #include "vl.h"
26 #include <SDL.h>
28 #ifndef _WIN32
29 #include <signal.h>
30 #endif
32 static SDL_Surface *screen;
33 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
34 static int last_vm_running;
35 static int gui_saved_grab;
36 static int gui_fullscreen;
37 static int gui_key_modifier_pressed;
38 static int gui_keysym;
39 static int gui_fullscreen_initial_grab;
40 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
41 static uint8_t modifiers_state[256];
42 static int width, height;
43 static SDL_Cursor *sdl_cursor_normal;
44 static SDL_Cursor *sdl_cursor_hidden;
45 static int absolute_enabled = 0;
47 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
49 // printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
50 SDL_UpdateRect(screen, x, y, w, h);
53 static void sdl_resize(DisplayState *ds, int w, int h)
55 int flags;
57 // printf("resizing to %d %d\n", w, h);
59 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
60 if (gui_fullscreen)
61 flags |= SDL_FULLSCREEN;
63 width = w;
64 height = h;
66 again:
67 screen = SDL_SetVideoMode(w, h, 0, flags);
68 if (!screen) {
69 fprintf(stderr, "Could not open SDL display\n");
70 exit(1);
72 if (!screen->pixels && (flags & SDL_HWSURFACE) && (flags & SDL_FULLSCREEN)) {
73 flags &= ~SDL_HWSURFACE;
74 goto again;
77 if (!screen->pixels) {
78 fprintf(stderr, "Could not open SDL display\n");
79 exit(1);
81 ds->data = screen->pixels;
82 ds->linesize = screen->pitch;
83 ds->depth = screen->format->BitsPerPixel;
84 if (ds->depth == 32 && screen->format->Rshift == 0) {
85 ds->bgr = 1;
86 } else {
87 ds->bgr = 0;
89 ds->width = w;
90 ds->height = h;
93 /* generic keyboard conversion */
95 #include "sdl_keysym.h"
96 #include "keymaps.c"
98 static kbd_layout_t *kbd_layout = NULL;
100 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
102 int keysym;
103 /* workaround for X11+SDL bug with AltGR */
104 keysym = ev->keysym.sym;
105 if (keysym == 0 && ev->keysym.scancode == 113)
106 keysym = SDLK_MODE;
107 return keysym2scancode(kbd_layout, keysym);
110 /* specific keyboard conversions from scan codes */
112 #if defined(_WIN32)
114 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
116 return ev->keysym.scancode;
119 #else
121 static const uint8_t x_keycode_to_pc_keycode[61] = {
122 0xc7, /* 97 Home */
123 0xc8, /* 98 Up */
124 0xc9, /* 99 PgUp */
125 0xcb, /* 100 Left */
126 0x4c, /* 101 KP-5 */
127 0xcd, /* 102 Right */
128 0xcf, /* 103 End */
129 0xd0, /* 104 Down */
130 0xd1, /* 105 PgDn */
131 0xd2, /* 106 Ins */
132 0xd3, /* 107 Del */
133 0x9c, /* 108 Enter */
134 0x9d, /* 109 Ctrl-R */
135 0x0, /* 110 Pause */
136 0xb7, /* 111 Print */
137 0xb5, /* 112 Divide */
138 0xb8, /* 113 Alt-R */
139 0xc6, /* 114 Break */
140 0x0, /* 115 */
141 0x0, /* 116 */
142 0x0, /* 117 */
143 0x0, /* 118 */
144 0x0, /* 119 */
145 0x70, /* 120 Hiragana_Katakana */
146 0x0, /* 121 */
147 0x0, /* 122 */
148 0x73, /* 123 backslash */
149 0x0, /* 124 */
150 0x0, /* 125 */
151 0x0, /* 126 */
152 0x0, /* 127 */
153 0x0, /* 128 */
154 0x79, /* 129 Henkan */
155 0x0, /* 130 */
156 0x7b, /* 131 Muhenkan */
157 0x0, /* 132 */
158 0x7d, /* 133 Yen */
159 0x0, /* 134 */
160 0x0, /* 135 */
161 0x47, /* 136 KP_7 */
162 0x48, /* 137 KP_8 */
163 0x49, /* 138 KP_9 */
164 0x4b, /* 139 KP_4 */
165 0x4c, /* 140 KP_5 */
166 0x4d, /* 141 KP_6 */
167 0x4f, /* 142 KP_1 */
168 0x50, /* 143 KP_2 */
169 0x51, /* 144 KP_3 */
170 0x52, /* 145 KP_0 */
171 0x53, /* 146 KP_. */
172 0x47, /* 147 KP_HOME */
173 0x48, /* 148 KP_UP */
174 0x49, /* 149 KP_PgUp */
175 0x4b, /* 150 KP_Left */
176 0x4c, /* 151 KP_ */
177 0x4d, /* 152 KP_Right */
178 0x4f, /* 153 KP_End */
179 0x50, /* 154 KP_Down */
180 0x51, /* 155 KP_PgDn */
181 0x52, /* 156 KP_Ins */
182 0x53, /* 157 KP_Del */
185 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
187 int keycode;
189 keycode = ev->keysym.scancode;
191 if (keycode < 9) {
192 keycode = 0;
193 } else if (keycode < 97) {
194 keycode -= 8; /* just an offset */
195 } else if (keycode < 158) {
196 /* use conversion table */
197 keycode = x_keycode_to_pc_keycode[keycode - 97];
198 } else {
199 keycode = 0;
201 return keycode;
204 #endif
206 static void reset_keys(void)
208 int i;
209 for(i = 0; i < 256; i++) {
210 if (modifiers_state[i]) {
211 if (i & 0x80)
212 kbd_put_keycode(0xe0);
213 kbd_put_keycode(i | 0x80);
214 modifiers_state[i] = 0;
219 static void sdl_process_key(SDL_KeyboardEvent *ev)
221 int keycode, v;
223 if (ev->keysym.sym == SDLK_PAUSE) {
224 /* specific case */
225 v = 0;
226 if (ev->type == SDL_KEYUP)
227 v |= 0x80;
228 kbd_put_keycode(0xe1);
229 kbd_put_keycode(0x1d | v);
230 kbd_put_keycode(0x45 | v);
231 return;
234 if (kbd_layout) {
235 keycode = sdl_keyevent_to_keycode_generic(ev);
236 } else {
237 keycode = sdl_keyevent_to_keycode(ev);
240 switch(keycode) {
241 case 0x00:
242 /* sent when leaving window: reset the modifiers state */
243 reset_keys();
244 return;
245 case 0x2a: /* Left Shift */
246 case 0x36: /* Right Shift */
247 case 0x1d: /* Left CTRL */
248 case 0x9d: /* Right CTRL */
249 case 0x38: /* Left ALT */
250 case 0xb8: /* Right ALT */
251 if (ev->type == SDL_KEYUP)
252 modifiers_state[keycode] = 0;
253 else
254 modifiers_state[keycode] = 1;
255 break;
256 case 0x45: /* num lock */
257 case 0x3a: /* caps lock */
258 /* SDL does not send the key up event, so we generate it */
259 kbd_put_keycode(keycode);
260 kbd_put_keycode(keycode | 0x80);
261 return;
264 /* now send the key code */
265 if (keycode & 0x80)
266 kbd_put_keycode(0xe0);
267 if (ev->type == SDL_KEYUP)
268 kbd_put_keycode(keycode | 0x80);
269 else
270 kbd_put_keycode(keycode & 0x7f);
273 static void sdl_update_caption(void)
275 char buf[1024];
276 strcpy(buf, "QEMU");
277 if (!vm_running) {
278 strcat(buf, " [Stopped]");
280 if (gui_grab) {
281 strcat(buf, " - Press Ctrl-Alt to exit grab");
283 SDL_WM_SetCaption(buf, "QEMU");
286 static void sdl_hide_cursor(void)
288 SDL_SetCursor(sdl_cursor_hidden);
291 static void sdl_show_cursor(void)
293 if (!kbd_mouse_is_absolute()) {
294 SDL_SetCursor(sdl_cursor_normal);
298 static void sdl_grab_start(void)
300 sdl_hide_cursor();
301 SDL_WM_GrabInput(SDL_GRAB_ON);
302 /* dummy read to avoid moving the mouse */
303 SDL_GetRelativeMouseState(NULL, NULL);
304 gui_grab = 1;
305 sdl_update_caption();
308 static void sdl_grab_end(void)
310 SDL_WM_GrabInput(SDL_GRAB_OFF);
311 sdl_show_cursor();
312 gui_grab = 0;
313 sdl_update_caption();
316 static void sdl_send_mouse_event(int dz)
318 int dx, dy, state, buttons;
319 state = SDL_GetRelativeMouseState(&dx, &dy);
320 buttons = 0;
321 if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
322 buttons |= MOUSE_EVENT_LBUTTON;
323 if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
324 buttons |= MOUSE_EVENT_RBUTTON;
325 if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
326 buttons |= MOUSE_EVENT_MBUTTON;
328 if (kbd_mouse_is_absolute()) {
329 if (!absolute_enabled) {
330 sdl_hide_cursor();
331 if (gui_grab) {
332 sdl_grab_end();
334 absolute_enabled = 1;
337 SDL_GetMouseState(&dx, &dy);
338 dx = dx * 0x7FFF / width;
339 dy = dy * 0x7FFF / height;
342 kbd_mouse_event(dx, dy, dz, buttons);
345 static void toggle_full_screen(DisplayState *ds)
347 gui_fullscreen = !gui_fullscreen;
348 sdl_resize(ds, screen->w, screen->h);
349 if (gui_fullscreen) {
350 gui_saved_grab = gui_grab;
351 sdl_grab_start();
352 } else {
353 if (!gui_saved_grab)
354 sdl_grab_end();
356 vga_hw_invalidate();
357 vga_hw_update();
360 static void sdl_refresh(DisplayState *ds)
362 SDL_Event ev1, *ev = &ev1;
363 int mod_state;
365 if (last_vm_running != vm_running) {
366 last_vm_running = vm_running;
367 sdl_update_caption();
370 vga_hw_update();
372 while (SDL_PollEvent(ev)) {
373 switch (ev->type) {
374 case SDL_VIDEOEXPOSE:
375 sdl_update(ds, 0, 0, screen->w, screen->h);
376 break;
377 case SDL_KEYDOWN:
378 case SDL_KEYUP:
379 if (ev->type == SDL_KEYDOWN) {
380 mod_state = (SDL_GetModState() & gui_grab_code) ==
381 gui_grab_code;
382 gui_key_modifier_pressed = mod_state;
383 if (gui_key_modifier_pressed) {
384 int keycode;
385 keycode = sdl_keyevent_to_keycode(&ev->key);
386 switch(keycode) {
387 case 0x21: /* 'f' key on US keyboard */
388 toggle_full_screen(ds);
389 gui_keysym = 1;
390 break;
391 case 0x02 ... 0x0a: /* '1' to '9' keys */
392 console_select(keycode - 0x02);
393 if (!is_graphic_console()) {
394 /* display grab if going to a text console */
395 if (gui_grab)
396 sdl_grab_end();
398 gui_keysym = 1;
399 break;
400 default:
401 break;
403 } else if (!is_graphic_console()) {
404 int keysym;
405 keysym = 0;
406 if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
407 switch(ev->key.keysym.sym) {
408 case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
409 case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
410 case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
411 case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
412 case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
413 case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
414 case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
415 case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
416 default: break;
418 } else {
419 switch(ev->key.keysym.sym) {
420 case SDLK_UP: keysym = QEMU_KEY_UP; break;
421 case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
422 case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
423 case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
424 case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
425 case SDLK_END: keysym = QEMU_KEY_END; break;
426 case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
427 case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
428 case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break; case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
429 default: break;
432 if (keysym) {
433 kbd_put_keysym(keysym);
434 } else if (ev->key.keysym.unicode != 0) {
435 kbd_put_keysym(ev->key.keysym.unicode);
438 } else if (ev->type == SDL_KEYUP) {
439 mod_state = (ev->key.keysym.mod & gui_grab_code);
440 if (!mod_state) {
441 if (gui_key_modifier_pressed) {
442 gui_key_modifier_pressed = 0;
443 if (gui_keysym == 0) {
444 /* exit/enter grab if pressing Ctrl-Alt */
445 if (!gui_grab)
446 sdl_grab_start();
447 else
448 sdl_grab_end();
449 /* SDL does not send back all the
450 modifiers key, so we must correct it */
451 reset_keys();
452 break;
454 gui_keysym = 0;
458 if (is_graphic_console())
459 sdl_process_key(&ev->key);
460 break;
461 case SDL_QUIT:
462 qemu_system_shutdown_request();
463 break;
464 case SDL_MOUSEMOTION:
465 if (gui_grab || kbd_mouse_is_absolute()) {
466 sdl_send_mouse_event(0);
468 break;
469 case SDL_MOUSEBUTTONDOWN:
470 case SDL_MOUSEBUTTONUP:
472 SDL_MouseButtonEvent *bev = &ev->button;
473 if (!gui_grab && !kbd_mouse_is_absolute()) {
474 if (ev->type == SDL_MOUSEBUTTONDOWN &&
475 (bev->state & SDL_BUTTON_LMASK)) {
476 /* start grabbing all events */
477 sdl_grab_start();
479 } else {
480 int dz;
481 dz = 0;
482 #ifdef SDL_BUTTON_WHEELUP
483 if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
484 dz = -1;
485 } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
486 dz = 1;
488 #endif
489 sdl_send_mouse_event(dz);
492 break;
493 case SDL_ACTIVEEVENT:
494 if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
495 !ev->active.gain && !gui_fullscreen_initial_grab) {
496 sdl_grab_end();
498 break;
499 default:
500 break;
505 static void sdl_cleanup(void)
507 SDL_Quit();
510 void sdl_display_init(DisplayState *ds, int full_screen)
512 int flags;
513 uint8_t data = 0;
515 #if defined(__APPLE__)
516 /* always use generic keymaps */
517 if (!keyboard_layout)
518 keyboard_layout = "en-us";
519 #endif
520 if(keyboard_layout) {
521 kbd_layout = init_keyboard_layout(keyboard_layout);
522 if (!kbd_layout)
523 exit(1);
526 flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
527 if (SDL_Init (flags)) {
528 fprintf(stderr, "Could not initialize SDL - exiting\n");
529 exit(1);
531 #ifndef _WIN32
532 /* NOTE: we still want Ctrl-C to work, so we undo the SDL redirections */
533 signal(SIGINT, SIG_DFL);
534 signal(SIGQUIT, SIG_DFL);
535 #endif
537 ds->dpy_update = sdl_update;
538 ds->dpy_resize = sdl_resize;
539 ds->dpy_refresh = sdl_refresh;
541 sdl_resize(ds, 640, 400);
542 sdl_update_caption();
543 SDL_EnableKeyRepeat(250, 50);
544 SDL_EnableUNICODE(1);
545 gui_grab = 0;
547 sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
548 sdl_cursor_normal = SDL_GetCursor();
550 atexit(sdl_cleanup);
551 if (full_screen) {
552 gui_fullscreen = 1;
553 gui_fullscreen_initial_grab = 1;
554 sdl_grab_start();