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/*
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 * QEMU SDL display driver
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 *
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 * Copyright (c) 2003 Fabrice Bellard
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * 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
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 * 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
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 * THE SOFTWARE.
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 */
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#include <SDL.h>
25
#include <SDL_syswm.h>
26

    
27
#ifndef _WIN32
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#include <signal.h>
29
#endif
30

    
31
#include "qemu-common.h"
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#include "console.h"
33
#include "sysemu.h"
34
#include "x_keymap.h"
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#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;
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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);
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    SDL_Rect rec;
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    rec.x = x;
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    rec.y = y;
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    rec.w = w;
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    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
                    "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
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 to exit grab";
419
        else
420
            status = " - Press Ctrl-Alt-Shift to exit grab";
421
    }
422

    
423
    if (qemu_name) {
424
        snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
425
        snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
426
    } else {
427
        snprintf(win_title, sizeof(win_title), "QEMU%s", status);
428
        snprintf(icon_title, sizeof(icon_title), "QEMU");
429
    }
430

    
431
    SDL_WM_SetCaption(win_title, icon_title);
432
}
433

    
434
static void sdl_hide_cursor(void)
435
{
436
    if (!cursor_hide)
437
        return;
438

    
439
    if (kbd_mouse_is_absolute()) {
440
        SDL_ShowCursor(1);
441
        SDL_SetCursor(sdl_cursor_hidden);
442
    } else {
443
        SDL_ShowCursor(0);
444
    }
445
}
446

    
447
static void sdl_show_cursor(void)
448
{
449
    if (!cursor_hide)
450
        return;
451

    
452
    if (!kbd_mouse_is_absolute()) {
453
        SDL_ShowCursor(1);
454
        if (guest_cursor &&
455
                (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
456
            SDL_SetCursor(guest_sprite);
457
        else
458
            SDL_SetCursor(sdl_cursor_normal);
459
    }
460
}
461

    
462
static void sdl_grab_start(void)
463
{
464
    if (guest_cursor) {
465
        SDL_SetCursor(guest_sprite);
466
        if (!kbd_mouse_is_absolute() && !absolute_enabled)
467
            SDL_WarpMouse(guest_x, guest_y);
468
    } else
469
        sdl_hide_cursor();
470

    
471
    if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
472
        gui_grab = 1;
473
        sdl_update_caption();
474
    } else
475
        sdl_show_cursor();
476
}
477

    
478
static void sdl_grab_end(void)
479
{
480
    SDL_WM_GrabInput(SDL_GRAB_OFF);
481
    gui_grab = 0;
482
    sdl_show_cursor();
483
    sdl_update_caption();
484
}
485

    
486
static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
487
{
488
    int buttons;
489
    buttons = 0;
490
    if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
491
        buttons |= MOUSE_EVENT_LBUTTON;
492
    if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
493
        buttons |= MOUSE_EVENT_RBUTTON;
494
    if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
495
        buttons |= MOUSE_EVENT_MBUTTON;
496

    
497
    if (kbd_mouse_is_absolute()) {
498
        if (!absolute_enabled) {
499
            sdl_hide_cursor();
500
            if (gui_grab) {
501
                sdl_grab_end();
502
            }
503
            absolute_enabled = 1;
504
        }
505

    
506
       dx = x * 0x7FFF / (width - 1);
507
       dy = y * 0x7FFF / (height - 1);
508
    } else if (absolute_enabled) {
509
        sdl_show_cursor();
510
        absolute_enabled = 0;
511
    } else if (guest_cursor) {
512
        x -= guest_x;
513
        y -= guest_y;
514
        guest_x += x;
515
        guest_y += y;
516
        dx = x;
517
        dy = y;
518
    }
519

    
520
    kbd_mouse_event(dx, dy, dz, buttons);
521
}
522

    
523
static void toggle_full_screen(DisplayState *ds)
524
{
525
    gui_fullscreen = !gui_fullscreen;
526
    if (gui_fullscreen) {
527
        scaling_active = 0;
528
        gui_saved_grab = gui_grab;
529
        sdl_grab_start();
530
    } else {
531
        if (!gui_saved_grab)
532
            sdl_grab_end();
533
    }
534
    vga_hw_invalidate();
535
    vga_hw_update();
536
}
537

    
538
static void sdl_refresh(DisplayState *ds)
539
{
540
    SDL_Event ev1, *ev = &ev1;
541
    int mod_state;
542
    int buttonstate = SDL_GetMouseState(NULL, NULL);
543

    
544
    if (last_vm_running != vm_running) {
545
        last_vm_running = vm_running;
546
        sdl_update_caption();
547
    }
548

    
549
    vga_hw_update();
550
    SDL_EnableUNICODE(!is_graphic_console());
551

    
552
    while (SDL_PollEvent(ev)) {
553
        switch (ev->type) {
554
        case SDL_VIDEOEXPOSE:
555
            sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
556
            break;
557
        case SDL_KEYDOWN:
558
        case SDL_KEYUP:
559
            if (ev->type == SDL_KEYDOWN) {
560
                if (!alt_grab) {
561
                    mod_state = (SDL_GetModState() & gui_grab_code) ==
562
                                gui_grab_code;
563
                } else {
564
                    mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
565
                                (gui_grab_code | KMOD_LSHIFT);
566
                }
567
                gui_key_modifier_pressed = mod_state;
568
                if (gui_key_modifier_pressed) {
569
                    int keycode;
570
                    keycode = sdl_keyevent_to_keycode(&ev->key);
571
                    switch(keycode) {
572
                    case 0x21: /* 'f' key on US keyboard */
573
                        toggle_full_screen(ds);
574
                        gui_keysym = 1;
575
                        break;
576
                    case 0x16: /* 'u' key on US keyboard */
577
                        scaling_active = 0;
578
                        sdl_resize(ds);
579
                        vga_hw_invalidate();
580
                        vga_hw_update();
581
                        break;
582
                    case 0x02 ... 0x0a: /* '1' to '9' keys */
583
                        /* Reset the modifiers sent to the current console */
584
                        reset_keys();
585
                        console_select(keycode - 0x02);
586
                        if (!is_graphic_console()) {
587
                            /* display grab if going to a text console */
588
                            if (gui_grab)
589
                                sdl_grab_end();
590
                        }
591
                        gui_keysym = 1;
592
                        break;
593
                    default:
594
                        break;
595
                    }
596
                } else if (!is_graphic_console()) {
597
                    int keysym;
598
                    keysym = 0;
599
                    if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
600
                        switch(ev->key.keysym.sym) {
601
                        case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
602
                        case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
603
                        case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
604
                        case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
605
                        case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
606
                        case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
607
                        case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
608
                        case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
609
                        default: break;
610
                        }
611
                    } else {
612
                        switch(ev->key.keysym.sym) {
613
                        case SDLK_UP: keysym = QEMU_KEY_UP; break;
614
                        case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
615
                        case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
616
                        case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
617
                        case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
618
                        case SDLK_END: keysym = QEMU_KEY_END; break;
619
                        case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
620
                        case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
621
                        case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
622
                        case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
623
                        default: break;
624
                        }
625
                    }
626
                    if (keysym) {
627
                        kbd_put_keysym(keysym);
628
                    } else if (ev->key.keysym.unicode != 0) {
629
                        kbd_put_keysym(ev->key.keysym.unicode);
630
                    }
631
                }
632
            } else if (ev->type == SDL_KEYUP) {
633
                if (!alt_grab) {
634
                    mod_state = (ev->key.keysym.mod & gui_grab_code);
635
                } else {
636
                    mod_state = (ev->key.keysym.mod &
637
                                 (gui_grab_code | KMOD_LSHIFT));
638
                }
639
                if (!mod_state) {
640
                    if (gui_key_modifier_pressed) {
641
                        gui_key_modifier_pressed = 0;
642
                        if (gui_keysym == 0) {
643
                            /* exit/enter grab if pressing Ctrl-Alt */
644
                            if (!gui_grab) {
645
                                /* if the application is not active,
646
                                   do not try to enter grab state. It
647
                                   prevents
648
                                   'SDL_WM_GrabInput(SDL_GRAB_ON)'
649
                                   from blocking all the application
650
                                   (SDL bug). */
651
                                if (SDL_GetAppState() & SDL_APPACTIVE)
652
                                    sdl_grab_start();
653
                            } else {
654
                                sdl_grab_end();
655
                            }
656
                            /* SDL does not send back all the
657
                               modifiers key, so we must correct it */
658
                            reset_keys();
659
                            break;
660
                        }
661
                        gui_keysym = 0;
662
                    }
663
                }
664
            }
665
            if (is_graphic_console() && !gui_keysym)
666
                sdl_process_key(&ev->key);
667
            break;
668
        case SDL_QUIT:
669
            if (!no_quit)
670
                qemu_system_shutdown_request();
671
            break;
672
        case SDL_MOUSEMOTION:
673
            if (gui_grab || kbd_mouse_is_absolute() ||
674
                absolute_enabled) {
675
                sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
676
                       ev->motion.x, ev->motion.y, ev->motion.state);
677
            }
678
            break;
679
        case SDL_MOUSEBUTTONDOWN:
680
        case SDL_MOUSEBUTTONUP:
681
            {
682
                SDL_MouseButtonEvent *bev = &ev->button;
683
                if (!gui_grab && !kbd_mouse_is_absolute()) {
684
                    if (ev->type == SDL_MOUSEBUTTONDOWN &&
685
                        (bev->button == SDL_BUTTON_LEFT)) {
686
                        /* start grabbing all events */
687
                        sdl_grab_start();
688
                    }
689
                } else {
690
                    int dz;
691
                    dz = 0;
692
                    if (ev->type == SDL_MOUSEBUTTONDOWN) {
693
                        buttonstate |= SDL_BUTTON(bev->button);
694
                    } else {
695
                        buttonstate &= ~SDL_BUTTON(bev->button);
696
                    }
697
#ifdef SDL_BUTTON_WHEELUP
698
                    if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
699
                        dz = -1;
700
                    } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
701
                        dz = 1;
702
                    }
703
#endif
704
                    sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
705
                }
706
            }
707
            break;
708
        case SDL_ACTIVEEVENT:
709
            if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
710
                !ev->active.gain && !gui_fullscreen_initial_grab) {
711
                sdl_grab_end();
712
            }
713
            if (ev->active.state & SDL_APPACTIVE) {
714
                if (ev->active.gain) {
715
                    /* Back to default interval */
716
                    dcl->gui_timer_interval = 0;
717
                    dcl->idle = 0;
718
                } else {
719
                    /* Sleeping interval */
720
                    dcl->gui_timer_interval = 500;
721
                    dcl->idle = 1;
722
                }
723
            }
724
            break;
725
        case SDL_VIDEORESIZE:
726
        {
727
            SDL_ResizeEvent *rev = &ev->resize;
728
            int bpp = real_screen->format->BitsPerPixel;
729
            if (bpp != 16 && bpp != 32)
730
                bpp = 32;
731
            do_sdl_resize(rev->w, rev->h, bpp);
732
            scaling_active = 1;
733
            if (!is_buffer_shared(ds->surface)) {
734
                ds->surface = qemu_resize_displaysurface(ds, ds_get_width(ds), ds_get_height(ds));
735
                dpy_resize(ds);
736
            }
737
            vga_hw_invalidate();
738
            vga_hw_update();
739
            break;
740
        }
741
        default:
742
            break;
743
        }
744
    }
745
}
746

    
747
static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
748
{
749
    SDL_Rect dst = { x, y, w, h };
750
    SDL_FillRect(real_screen, &dst, c);
751
}
752

    
753
static void sdl_mouse_warp(int x, int y, int on)
754
{
755
    if (on) {
756
        if (!guest_cursor)
757
            sdl_show_cursor();
758
        if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
759
            SDL_SetCursor(guest_sprite);
760
            if (!kbd_mouse_is_absolute() && !absolute_enabled)
761
                SDL_WarpMouse(x, y);
762
        }
763
    } else if (gui_grab)
764
        sdl_hide_cursor();
765
    guest_cursor = on;
766
    guest_x = x, guest_y = y;
767
}
768

    
769
static void sdl_mouse_define(int width, int height, int bpp,
770
                             int hot_x, int hot_y,
771
                             uint8_t *image, uint8_t *mask)
772
{
773
    uint8_t sprite[256], *line;
774
    int x, y, dst, bypl, src = 0;
775
    if (guest_sprite)
776
        SDL_FreeCursor(guest_sprite);
777

    
778
    memset(sprite, 0, 256);
779
    bypl = ((width * bpp + 31) >> 5) << 2;
780
    for (y = 0, dst = 0; y < height; y ++, image += bypl) {
781
        line = image;
782
        for (x = 0; x < width; x ++, dst ++) {
783
            switch (bpp) {
784
            case 32:
785
                src = *(line ++); src |= *(line ++); src |= *(line ++); line++;
786
                break;
787
            case 24:
788
                src = *(line ++); src |= *(line ++); src |= *(line ++);
789
                break;
790
            case 16:
791
            case 15:
792
                src = *(line ++); src |= *(line ++);
793
                break;
794
            case 8:
795
                src = *(line ++);
796
                break;
797
            case 4:
798
                src = 0xf & (line[x >> 1] >> ((x & 1)) << 2);
799
                break;
800
            case 2:
801
                src = 3 & (line[x >> 2] >> ((x & 3)) << 1);
802
                break;
803
            case 1:
804
                src = 1 & (line[x >> 3] >> (x & 7));
805
                break;
806
            }
807
            if (!src)
808
                sprite[dst >> 3] |= (1 << (~dst & 7)) & mask[dst >> 3];
809
        }
810
    }
811
    guest_sprite = SDL_CreateCursor(sprite, mask, width, height, hot_x, hot_y);
812

    
813
    if (guest_cursor &&
814
            (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
815
        SDL_SetCursor(guest_sprite);
816
}
817

    
818
static void sdl_cleanup(void)
819
{
820
    if (guest_sprite)
821
        SDL_FreeCursor(guest_sprite);
822
    SDL_QuitSubSystem(SDL_INIT_VIDEO);
823
}
824

    
825
void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
826
{
827
    int flags;
828
    uint8_t data = 0;
829
    DisplayAllocator *da;
830
    const SDL_VideoInfo *vi;
831

    
832
#if defined(__APPLE__)
833
    /* always use generic keymaps */
834
    if (!keyboard_layout)
835
        keyboard_layout = "en-us";
836
#endif
837
    if(keyboard_layout) {
838
        kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
839
        if (!kbd_layout)
840
            exit(1);
841
    }
842

    
843
    if (no_frame)
844
        gui_noframe = 1;
845

    
846
    flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
847
    if (SDL_Init (flags)) {
848
        fprintf(stderr, "Could not initialize SDL - exiting\n");
849
        exit(1);
850
    }
851
    vi = SDL_GetVideoInfo();
852
    host_format = *(vi->vfmt);
853

    
854
    dcl = qemu_mallocz(sizeof(DisplayChangeListener));
855
    dcl->dpy_update = sdl_update;
856
    dcl->dpy_resize = sdl_resize;
857
    dcl->dpy_refresh = sdl_refresh;
858
    dcl->dpy_setdata = sdl_setdata;
859
    dcl->dpy_fill = sdl_fill;
860
    ds->mouse_set = sdl_mouse_warp;
861
    ds->cursor_define = sdl_mouse_define;
862
    register_displaychangelistener(ds, dcl);
863

    
864
    da = qemu_mallocz(sizeof(DisplayAllocator));
865
    da->create_displaysurface = sdl_create_displaysurface;
866
    da->resize_displaysurface = sdl_resize_displaysurface;
867
    da->free_displaysurface = sdl_free_displaysurface;
868
    if (register_displayallocator(ds, da) == da) {
869
        DisplaySurface *surf;
870
        surf = sdl_create_displaysurface(ds_get_width(ds), ds_get_height(ds));
871
        defaultallocator_free_displaysurface(ds->surface);
872
        ds->surface = surf;
873
        dpy_resize(ds);
874
    }
875

    
876
    sdl_update_caption();
877
    SDL_EnableKeyRepeat(250, 50);
878
    gui_grab = 0;
879

    
880
    sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
881
    sdl_cursor_normal = SDL_GetCursor();
882

    
883
    atexit(sdl_cleanup);
884
    if (full_screen) {
885
        gui_fullscreen = 1;
886
        gui_fullscreen_initial_grab = 1;
887
        sdl_grab_start();
888
    }
889
}