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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
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 * 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,
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22
 * THE SOFTWARE.
23
 */
24
#include "vl.h"
25

    
26
#include <SDL.h>
27

    
28
#ifndef _WIN32
29
#include <signal.h>
30
#endif
31

    
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;
46

    
47
static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
48
{
49
    //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
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    SDL_UpdateRect(screen, x, y, w, h);
51
}
52

    
53
static void sdl_resize(DisplayState *ds, int w, int h)
54
{
55
    int flags;
56

    
57
    //    printf("resizing to %d %d\n", w, h);
58

    
59
    flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
60
    if (gui_fullscreen)
61
        flags |= SDL_FULLSCREEN;
62

    
63
    width = w;
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    height = h;
65

    
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);
71
    }
72
    if (!screen->pixels && (flags & SDL_HWSURFACE) && (flags & SDL_FULLSCREEN)) {
73
        flags &= ~SDL_HWSURFACE;
74
        goto again;
75
    }
76

    
77
    if (!screen->pixels) {
78
        fprintf(stderr, "Could not open SDL display\n");
79
        exit(1);
80
    }
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;
88
    }
89
    ds->width = w;
90
    ds->height = h;
91
}
92

    
93
/* generic keyboard conversion */
94

    
95
#include "sdl_keysym.h"
96
#include "keymaps.c"
97

    
98
static kbd_layout_t *kbd_layout = NULL;
99

    
100
static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
101
{
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
    /* For Japanese key '\' and '|' */
108
    if (keysym == 92 && ev->keysym.scancode == 133) {
109
        keysym = 0xa5;
110
    }
111
    return keysym2scancode(kbd_layout, keysym);
112
}
113

    
114
/* specific keyboard conversions from scan codes */
115

    
116
#if defined(_WIN32)
117

    
118
static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
119
{
120
    return ev->keysym.scancode;
121
}
122

    
123
#else
124

    
125
static const uint8_t x_keycode_to_pc_keycode[115] = {
126
   0xc7,      /*  97  Home   */
127
   0xc8,      /*  98  Up     */
128
   0xc9,      /*  99  PgUp   */
129
   0xcb,      /* 100  Left   */
130
   0x4c,        /* 101  KP-5   */
131
   0xcd,      /* 102  Right  */
132
   0xcf,      /* 103  End    */
133
   0xd0,      /* 104  Down   */
134
   0xd1,      /* 105  PgDn   */
135
   0xd2,      /* 106  Ins    */
136
   0xd3,      /* 107  Del    */
137
   0x9c,      /* 108  Enter  */
138
   0x9d,      /* 109  Ctrl-R */
139
   0x0,       /* 110  Pause  */
140
   0xb7,      /* 111  Print  */
141
   0xb5,      /* 112  Divide */
142
   0xb8,      /* 113  Alt-R  */
143
   0xc6,      /* 114  Break  */   
144
   0x0,         /* 115 */
145
   0x0,         /* 116 */
146
   0x0,         /* 117 */
147
   0x0,         /* 118 */
148
   0x0,         /* 119 */
149
   0x0,         /* 120 */
150
   0x0,         /* 121 */
151
   0x0,         /* 122 */
152
   0x0,         /* 123 */
153
   0x0,         /* 124 */
154
   0x0,         /* 125 */
155
   0x0,         /* 126 */
156
   0x0,         /* 127 */
157
   0x0,         /* 128 */
158
   0x79,         /* 129 Henkan */
159
   0x0,         /* 130 */
160
   0x7b,         /* 131 Muhenkan */
161
   0x0,         /* 132 */
162
   0x7d,         /* 133 Yen */
163
   0x0,         /* 134 */
164
   0x0,         /* 135 */
165
   0x47,         /* 136 KP_7 */
166
   0x48,         /* 137 KP_8 */
167
   0x49,         /* 138 KP_9 */
168
   0x4b,         /* 139 KP_4 */
169
   0x4c,         /* 140 KP_5 */
170
   0x4d,         /* 141 KP_6 */
171
   0x4f,         /* 142 KP_1 */
172
   0x50,         /* 143 KP_2 */
173
   0x51,         /* 144 KP_3 */
174
   0x52,         /* 145 KP_0 */
175
   0x53,         /* 146 KP_. */
176
   0x47,         /* 147 KP_HOME */
177
   0x48,         /* 148 KP_UP */
178
   0x49,         /* 149 KP_PgUp */
179
   0x4b,         /* 150 KP_Left */
180
   0x4c,         /* 151 KP_ */
181
   0x4d,         /* 152 KP_Right */
182
   0x4f,         /* 153 KP_End */
183
   0x50,         /* 154 KP_Down */
184
   0x51,         /* 155 KP_PgDn */
185
   0x52,         /* 156 KP_Ins */
186
   0x53,         /* 157 KP_Del */
187
   0x0,         /* 158 */
188
   0x0,         /* 159 */
189
   0x0,         /* 160 */
190
   0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,         /* 170 */
191
   0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,         /* 180 */
192
   0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,         /* 190 */
193
   0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,         /* 200 */
194
   0x0,         /* 201 */
195
   0x0,         /* 202 */
196
   0x0,         /* 203 */
197
   0x0,         /* 204 */
198
   0x0,         /* 205 */
199
   0x0,         /* 206 */
200
   0x0,         /* 207 */
201
   0x70,         /* 208 Hiragana_Katakana */
202
   0x0,         /* 209 */
203
   0x0,         /* 210 */
204
   0x73,         /* 211 backslash */
205
};
206

    
207
static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
208
{
209
    int keycode;
210

    
211
    keycode = ev->keysym.scancode;
212

    
213
    if (keycode < 9) {
214
        keycode = 0;
215
    } else if (keycode < 97) {
216
        keycode -= 8; /* just an offset */
217
    } else if (keycode < 212) {
218
        /* use conversion table */
219
        keycode = x_keycode_to_pc_keycode[keycode - 97];
220
    } else {
221
        keycode = 0;
222
    }
223
    return keycode;
224
}
225

    
226
#endif
227

    
228
static void reset_keys(void)
229
{
230
    int i;
231
    for(i = 0; i < 256; i++) {
232
        if (modifiers_state[i]) {
233
            if (i & 0x80)
234
                kbd_put_keycode(0xe0);
235
            kbd_put_keycode(i | 0x80);
236
            modifiers_state[i] = 0;
237
        }
238
    }
239
}
240

    
241
static void sdl_process_key(SDL_KeyboardEvent *ev)
242
{
243
    int keycode, v;
244

    
245
    if (ev->keysym.sym == SDLK_PAUSE) {
246
        /* specific case */
247
        v = 0;
248
        if (ev->type == SDL_KEYUP)
249
            v |= 0x80;
250
        kbd_put_keycode(0xe1);
251
        kbd_put_keycode(0x1d | v);
252
        kbd_put_keycode(0x45 | v);
253
        return;
254
    }
255

    
256
    if (kbd_layout) {
257
        keycode = sdl_keyevent_to_keycode_generic(ev);
258
    } else {
259
        keycode = sdl_keyevent_to_keycode(ev);
260
    }
261

    
262
    switch(keycode) {
263
    case 0x00:
264
        /* sent when leaving window: reset the modifiers state */
265
        reset_keys();
266
        return;
267
    case 0x2a:                          /* Left Shift */
268
    case 0x36:                          /* Right Shift */
269
    case 0x1d:                          /* Left CTRL */
270
    case 0x9d:                          /* Right CTRL */
271
    case 0x38:                          /* Left ALT */
272
    case 0xb8:                         /* Right ALT */
273
        if (ev->type == SDL_KEYUP)
274
            modifiers_state[keycode] = 0;
275
        else
276
            modifiers_state[keycode] = 1;
277
        break;
278
    case 0x45: /* num lock */
279
    case 0x3a: /* caps lock */
280
        /* SDL does not send the key up event, so we generate it */
281
        kbd_put_keycode(keycode);
282
        kbd_put_keycode(keycode | 0x80);
283
        return;
284
    }
285

    
286
    /* now send the key code */
287
    if (keycode & 0x80)
288
        kbd_put_keycode(0xe0);
289
    if (ev->type == SDL_KEYUP)
290
        kbd_put_keycode(keycode | 0x80);
291
    else
292
        kbd_put_keycode(keycode & 0x7f);
293
}
294

    
295
static void sdl_update_caption(void)
296
{
297
    char buf[1024];
298
    strcpy(buf, "QEMU");
299
    if (!vm_running) {
300
        strcat(buf, " [Stopped]");
301
    }
302
    if (gui_grab) {
303
        strcat(buf, " - Press Ctrl-Alt to exit grab");
304
    }
305
    SDL_WM_SetCaption(buf, "QEMU");
306
}
307

    
308
static void sdl_hide_cursor(void)
309
{
310
    if (kbd_mouse_is_absolute()) {
311
        SDL_ShowCursor(1);
312
        SDL_SetCursor(sdl_cursor_hidden);
313
    } else {
314
        SDL_ShowCursor(0);
315
    }
316
}
317

    
318
static void sdl_show_cursor(void)
319
{
320
    if (!kbd_mouse_is_absolute()) {
321
        SDL_ShowCursor(1);
322
    }
323
}
324

    
325
static void sdl_grab_start(void)
326
{
327
    sdl_hide_cursor();
328
    SDL_WM_GrabInput(SDL_GRAB_ON);
329
    /* dummy read to avoid moving the mouse */
330
    SDL_GetRelativeMouseState(NULL, NULL);
331
    gui_grab = 1;
332
    sdl_update_caption();
333
}
334

    
335
static void sdl_grab_end(void)
336
{
337
    SDL_WM_GrabInput(SDL_GRAB_OFF);
338
    sdl_show_cursor();
339
    gui_grab = 0;
340
    sdl_update_caption();
341
}
342

    
343
static void sdl_send_mouse_event(int dz)
344
{
345
    int dx, dy, state, buttons;
346
    state = SDL_GetRelativeMouseState(&dx, &dy);
347
    buttons = 0;
348
    if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
349
        buttons |= MOUSE_EVENT_LBUTTON;
350
    if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
351
        buttons |= MOUSE_EVENT_RBUTTON;
352
    if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
353
        buttons |= MOUSE_EVENT_MBUTTON;
354

    
355
    if (kbd_mouse_is_absolute()) {
356
        if (!absolute_enabled) {
357
            sdl_hide_cursor();
358
            if (gui_grab) {
359
                sdl_grab_end();
360
            }
361
            absolute_enabled = 1;
362
        }
363

    
364
        SDL_GetMouseState(&dx, &dy);
365
        dx = dx * 0x7FFF / width;
366
        dy = dy * 0x7FFF / height;
367
    }
368

    
369
    kbd_mouse_event(dx, dy, dz, buttons);
370
}
371

    
372
static void toggle_full_screen(DisplayState *ds)
373
{
374
    gui_fullscreen = !gui_fullscreen;
375
    sdl_resize(ds, screen->w, screen->h);
376
    if (gui_fullscreen) {
377
        gui_saved_grab = gui_grab;
378
        sdl_grab_start();
379
    } else {
380
        if (!gui_saved_grab)
381
            sdl_grab_end();
382
    }
383
    vga_hw_invalidate();
384
    vga_hw_update();
385
}
386

    
387
static void sdl_refresh(DisplayState *ds)
388
{
389
    SDL_Event ev1, *ev = &ev1;
390
    int mod_state;
391
                     
392
    if (last_vm_running != vm_running) {
393
        last_vm_running = vm_running;
394
        sdl_update_caption();
395
    }
396

    
397
    vga_hw_update();
398

    
399
    while (SDL_PollEvent(ev)) {
400
        switch (ev->type) {
401
        case SDL_VIDEOEXPOSE:
402
            sdl_update(ds, 0, 0, screen->w, screen->h);
403
            break;
404
        case SDL_KEYDOWN:
405
        case SDL_KEYUP:
406
            if (ev->type == SDL_KEYDOWN) {
407
                mod_state = (SDL_GetModState() & gui_grab_code) ==
408
                    gui_grab_code;
409
                gui_key_modifier_pressed = mod_state;
410
                if (gui_key_modifier_pressed) {
411
                    int keycode;
412
                    keycode = sdl_keyevent_to_keycode(&ev->key);
413
                    switch(keycode) {
414
                    case 0x21: /* 'f' key on US keyboard */
415
                        toggle_full_screen(ds);
416
                        gui_keysym = 1;
417
                        break;
418
                    case 0x02 ... 0x0a: /* '1' to '9' keys */ 
419
                        /* Reset the modifiers sent to the current console */
420
                        reset_keys();
421
                        console_select(keycode - 0x02);
422
                        if (!is_graphic_console()) {
423
                            /* display grab if going to a text console */
424
                            if (gui_grab)
425
                                sdl_grab_end();
426
                        }
427
                        gui_keysym = 1;
428
                        break;
429
                    default:
430
                        break;
431
                    }
432
                } else if (!is_graphic_console()) {
433
                    int keysym;
434
                    keysym = 0;
435
                    if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
436
                        switch(ev->key.keysym.sym) {
437
                        case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
438
                        case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
439
                        case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
440
                        case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
441
                        case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
442
                        case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
443
                        case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
444
                        case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
445
                        default: break;
446
                        }
447
                    } else {
448
                        switch(ev->key.keysym.sym) {
449
                        case SDLK_UP: keysym = QEMU_KEY_UP; break;
450
                        case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
451
                        case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
452
                        case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
453
                        case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
454
                        case SDLK_END: keysym = QEMU_KEY_END; break;
455
                        case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
456
                        case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
457
                        case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;                        case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
458
                        default: break;
459
                        }
460
                    }
461
                    if (keysym) {
462
                        kbd_put_keysym(keysym);
463
                    } else if (ev->key.keysym.unicode != 0) {
464
                        kbd_put_keysym(ev->key.keysym.unicode);
465
                    }
466
                }
467
            } else if (ev->type == SDL_KEYUP) {
468
                mod_state = (ev->key.keysym.mod & gui_grab_code);
469
                if (!mod_state) {
470
                    if (gui_key_modifier_pressed) {
471
                        gui_key_modifier_pressed = 0;
472
                        if (gui_keysym == 0) {
473
                            /* exit/enter grab if pressing Ctrl-Alt */
474
                            if (!gui_grab) {
475
                                /* if the application is not active,
476
                                   do not try to enter grab state. It
477
                                   prevents
478
                                   'SDL_WM_GrabInput(SDL_GRAB_ON)'
479
                                   from blocking all the application
480
                                   (SDL bug). */
481
                                if (SDL_GetAppState() & SDL_APPACTIVE)
482
                                    sdl_grab_start();
483
                            } else {
484
                                sdl_grab_end();
485
                            }
486
                            /* SDL does not send back all the
487
                               modifiers key, so we must correct it */
488
                            reset_keys();
489
                            break;
490
                        }
491
                        gui_keysym = 0;
492
                    }
493
                }
494
            }
495
            if (is_graphic_console() && !gui_keysym) 
496
                sdl_process_key(&ev->key);
497
            break;
498
        case SDL_QUIT:
499
            qemu_system_shutdown_request();
500
            break;
501
        case SDL_MOUSEMOTION:
502
            if (gui_grab || kbd_mouse_is_absolute()) {
503
                sdl_send_mouse_event(0);
504
            }
505
            break;
506
        case SDL_MOUSEBUTTONDOWN:
507
        case SDL_MOUSEBUTTONUP:
508
            {
509
                SDL_MouseButtonEvent *bev = &ev->button;
510
                if (!gui_grab && !kbd_mouse_is_absolute()) {
511
                    if (ev->type == SDL_MOUSEBUTTONDOWN &&
512
                        (bev->state & SDL_BUTTON_LMASK)) {
513
                        /* start grabbing all events */
514
                        sdl_grab_start();
515
                    }
516
                } else {
517
                    int dz;
518
                    dz = 0;
519
#ifdef SDL_BUTTON_WHEELUP
520
                    if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
521
                        dz = -1;
522
                    } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
523
                        dz = 1;
524
                    }
525
#endif               
526
                    sdl_send_mouse_event(dz);
527
                }
528
            }
529
            break;
530
        case SDL_ACTIVEEVENT:
531
            if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
532
                !ev->active.gain && !gui_fullscreen_initial_grab) {
533
                sdl_grab_end();
534
            }
535
            break;
536
        default:
537
            break;
538
        }
539
    }
540
}
541

    
542
static void sdl_cleanup(void) 
543
{
544
    SDL_Quit();
545
}
546

    
547
void sdl_display_init(DisplayState *ds, int full_screen)
548
{
549
    int flags;
550
    uint8_t data = 0;
551

    
552
#if defined(__APPLE__)
553
    /* always use generic keymaps */
554
    if (!keyboard_layout)
555
        keyboard_layout = "en-us";
556
#endif
557
    if(keyboard_layout) {
558
        kbd_layout = init_keyboard_layout(keyboard_layout);
559
        if (!kbd_layout)
560
            exit(1);
561
    }
562

    
563
    flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
564
    if (SDL_Init (flags)) {
565
        fprintf(stderr, "Could not initialize SDL - exiting\n");
566
        exit(1);
567
    }
568
#ifndef _WIN32
569
    /* NOTE: we still want Ctrl-C to work, so we undo the SDL redirections */
570
    signal(SIGINT, SIG_DFL);
571
    signal(SIGQUIT, SIG_DFL);
572
#endif
573

    
574
    ds->dpy_update = sdl_update;
575
    ds->dpy_resize = sdl_resize;
576
    ds->dpy_refresh = sdl_refresh;
577

    
578
    sdl_resize(ds, 640, 400);
579
    sdl_update_caption();
580
    SDL_EnableKeyRepeat(250, 50);
581
    SDL_EnableUNICODE(1);
582
    gui_grab = 0;
583

    
584
    sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
585
    sdl_cursor_normal = SDL_GetCursor();
586

    
587
    atexit(sdl_cleanup);
588
    if (full_screen) {
589
        gui_fullscreen = 1;
590
        gui_fullscreen_initial_grab = 1;
591
        sdl_grab_start();
592
    }
593
}