2 * QEMU SDL display driver
4 * Copyright (c) 2003 Fabrice Bellard
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
25 #include <SDL_syswm.h>
31 #include "qemu-common.h"
37 static DisplayChangeListener *dcl;
38 static SDL_Surface *real_screen;
39 static SDL_Surface *guest_screen = NULL;
40 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
41 static int last_vm_running;
42 static int gui_saved_grab;
43 static int gui_fullscreen;
44 static int gui_noframe;
45 static int gui_key_modifier_pressed;
46 static int gui_keysym;
47 static int gui_fullscreen_initial_grab;
48 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
49 static uint8_t modifiers_state[256];
50 static int width, height;
51 static SDL_Cursor *sdl_cursor_normal;
52 static SDL_Cursor *sdl_cursor_hidden;
53 static int absolute_enabled = 0;
54 static int guest_cursor = 0;
55 static int guest_x, guest_y;
56 static SDL_Cursor *guest_sprite = 0;
57 static uint8_t allocator;
58 static SDL_PixelFormat host_format;
59 static int scaling_active = 0;
61 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
63 // printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
71 if (!scaling_active) {
72 SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
74 if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
75 fprintf(stderr, "Zoom blit failed\n");
80 SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
83 static void sdl_setdata(DisplayState *ds)
88 rec.w = real_screen->w;
89 rec.h = real_screen->h;
91 if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
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);
99 static void do_sdl_resize(int new_width, int new_height, int bpp)
103 // printf("resizing to %d %d\n", w, h);
105 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL|SDL_RESIZABLE;
107 flags |= SDL_FULLSCREEN;
109 flags |= SDL_NOFRAME;
113 real_screen = SDL_SetVideoMode(width, height, bpp, flags);
115 fprintf(stderr, "Could not open SDL display\n");
120 static void sdl_resize(DisplayState *ds)
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));
129 if (guest_screen != NULL) {
130 SDL_FreeSurface(guest_screen);
136 static PixelFormat sdl_to_qemu_pixelformat(SDL_PixelFormat *sdl_pf)
140 memset(&qemu_pf, 0x00, sizeof(PixelFormat));
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);
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;
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;
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;
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);
169 static DisplaySurface* sdl_create_displaysurface(int width, int height)
171 DisplaySurface *surface = (DisplaySurface*) qemu_mallocz(sizeof(DisplaySurface));
172 if (surface == NULL) {
173 fprintf(stderr, "sdl_create_displaysurface: malloc failed\n");
177 surface->width = width;
178 surface->height = height;
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);
185 surface->linesize = width * host_format.BytesPerPixel;
186 surface->pf = sdl_to_qemu_pixelformat(&host_format);
188 #ifdef WORDS_BIGENDIAN
189 surface->flags = QEMU_ALLOCATED_FLAG | QEMU_BIG_ENDIAN_FLAG;
191 surface->flags = QEMU_ALLOCATED_FLAG;
193 surface->data = (uint8_t*) qemu_mallocz(surface->linesize * surface->height);
198 if (host_format.BitsPerPixel == 16)
199 do_sdl_resize(width, height, 16);
201 do_sdl_resize(width, height, 32);
203 surface->pf = sdl_to_qemu_pixelformat(real_screen->format);
204 surface->linesize = real_screen->pitch;
205 surface->data = real_screen->pixels;
207 #ifdef WORDS_BIGENDIAN
208 surface->flags = QEMU_REALPIXELS_FLAG | QEMU_BIG_ENDIAN_FLAG;
210 surface->flags = QEMU_REALPIXELS_FLAG;
217 static void sdl_free_displaysurface(DisplaySurface *surface)
223 if (surface->flags & QEMU_ALLOCATED_FLAG)
224 qemu_free(surface->data);
228 static DisplaySurface* sdl_resize_displaysurface(DisplaySurface *surface, int width, int height)
230 sdl_free_displaysurface(surface);
231 return sdl_create_displaysurface(width, height);
234 /* generic keyboard conversion */
236 #include "sdl_keysym.h"
238 static kbd_layout_t *kbd_layout = NULL;
240 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
243 /* workaround for X11+SDL bug with AltGR */
244 keysym = ev->keysym.sym;
245 if (keysym == 0 && ev->keysym.scancode == 113)
247 /* For Japanese key '\' and '|' */
248 if (keysym == 92 && ev->keysym.scancode == 133) {
251 return keysym2scancode(kbd_layout, keysym);
254 /* specific keyboard conversions from scan codes */
258 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
260 return ev->keysym.scancode;
265 #if defined(SDL_VIDEO_DRIVER_X11)
266 #include <X11/XKBlib.h>
268 static int check_for_evdev(void)
273 const char *keycodes;
275 SDL_VERSION(&info.version);
276 if (!SDL_GetWMInfo(&info))
279 desc = XkbGetKeyboard(info.info.x11.display,
280 XkbGBN_AllComponentsMask,
282 if (desc == NULL || desc->names == NULL)
285 keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
286 if (keycodes == NULL)
287 fprintf(stderr, "could not lookup keycode name\n");
288 else if (strstart(keycodes, "evdev", NULL))
290 else if (!strstart(keycodes, "xfree86", NULL))
295 XkbFreeClientMap(desc, XkbGBN_AllComponentsMask, True);
300 static int check_for_evdev(void)
306 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
309 static int has_evdev = -1;
312 has_evdev = check_for_evdev();
314 keycode = ev->keysym.scancode;
318 } else if (keycode < 97) {
319 keycode -= 8; /* just an offset */
320 } else if (keycode < 158) {
321 /* use conversion table */
323 keycode = translate_evdev_keycode(keycode - 97);
325 keycode = translate_xfree86_keycode(keycode - 97);
326 } else if (keycode == 208) { /* Hiragana_Katakana */
328 } else if (keycode == 211) { /* backslash */
338 static void reset_keys(void)
341 for(i = 0; i < 256; i++) {
342 if (modifiers_state[i]) {
344 kbd_put_keycode(0xe0);
345 kbd_put_keycode(i | 0x80);
346 modifiers_state[i] = 0;
351 static void sdl_process_key(SDL_KeyboardEvent *ev)
355 if (ev->keysym.sym == SDLK_PAUSE) {
358 if (ev->type == SDL_KEYUP)
360 kbd_put_keycode(0xe1);
361 kbd_put_keycode(0x1d | v);
362 kbd_put_keycode(0x45 | v);
367 keycode = sdl_keyevent_to_keycode_generic(ev);
369 keycode = sdl_keyevent_to_keycode(ev);
374 /* sent when leaving window: reset the modifiers state */
377 case 0x2a: /* Left Shift */
378 case 0x36: /* Right Shift */
379 case 0x1d: /* Left CTRL */
380 case 0x9d: /* Right CTRL */
381 case 0x38: /* Left ALT */
382 case 0xb8: /* Right ALT */
383 if (ev->type == SDL_KEYUP)
384 modifiers_state[keycode] = 0;
386 modifiers_state[keycode] = 1;
388 case 0x45: /* num lock */
389 case 0x3a: /* caps lock */
390 /* SDL does not send the key up event, so we generate it */
391 kbd_put_keycode(keycode);
392 kbd_put_keycode(keycode | 0x80);
396 /* now send the key code */
398 kbd_put_keycode(0xe0);
399 if (ev->type == SDL_KEYUP)
400 kbd_put_keycode(keycode | 0x80);
402 kbd_put_keycode(keycode & 0x7f);
405 static void sdl_update_caption(void)
408 const char *status = "";
411 status = " [Stopped]";
414 status = " - Press Ctrl-Alt to exit grab";
416 status = " - Press Ctrl-Alt-Shift to exit grab";
420 snprintf(buf, sizeof(buf), "QEMU (%s)%s", qemu_name, status);
422 snprintf(buf, sizeof(buf), "QEMU%s", status);
424 SDL_WM_SetCaption(buf, "QEMU");
427 static void sdl_hide_cursor(void)
432 if (kbd_mouse_is_absolute()) {
434 SDL_SetCursor(sdl_cursor_hidden);
440 static void sdl_show_cursor(void)
445 if (!kbd_mouse_is_absolute()) {
448 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
449 SDL_SetCursor(guest_sprite);
451 SDL_SetCursor(sdl_cursor_normal);
455 static void sdl_grab_start(void)
458 SDL_SetCursor(guest_sprite);
459 if (!kbd_mouse_is_absolute() && !absolute_enabled)
460 SDL_WarpMouse(guest_x, guest_y);
464 if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
466 sdl_update_caption();
471 static void sdl_grab_end(void)
473 SDL_WM_GrabInput(SDL_GRAB_OFF);
476 sdl_update_caption();
479 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
483 if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
484 buttons |= MOUSE_EVENT_LBUTTON;
485 if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
486 buttons |= MOUSE_EVENT_RBUTTON;
487 if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
488 buttons |= MOUSE_EVENT_MBUTTON;
490 if (kbd_mouse_is_absolute()) {
491 if (!absolute_enabled) {
496 absolute_enabled = 1;
499 dx = x * 0x7FFF / (width - 1);
500 dy = y * 0x7FFF / (height - 1);
501 } else if (absolute_enabled) {
503 absolute_enabled = 0;
504 } else if (guest_cursor) {
513 kbd_mouse_event(dx, dy, dz, buttons);
516 static void toggle_full_screen(DisplayState *ds)
518 gui_fullscreen = !gui_fullscreen;
519 if (gui_fullscreen) {
521 gui_saved_grab = gui_grab;
531 static void sdl_refresh(DisplayState *ds)
533 SDL_Event ev1, *ev = &ev1;
535 int buttonstate = SDL_GetMouseState(NULL, NULL);
537 if (last_vm_running != vm_running) {
538 last_vm_running = vm_running;
539 sdl_update_caption();
543 SDL_EnableUNICODE(!is_graphic_console());
545 while (SDL_PollEvent(ev)) {
547 case SDL_VIDEOEXPOSE:
548 sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
552 if (ev->type == SDL_KEYDOWN) {
554 mod_state = (SDL_GetModState() & gui_grab_code) ==
557 mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
558 (gui_grab_code | KMOD_LSHIFT);
560 gui_key_modifier_pressed = mod_state;
561 if (gui_key_modifier_pressed) {
563 keycode = sdl_keyevent_to_keycode(&ev->key);
565 case 0x21: /* 'f' key on US keyboard */
566 toggle_full_screen(ds);
569 case 0x02 ... 0x0a: /* '1' to '9' keys */
570 /* Reset the modifiers sent to the current console */
572 console_select(keycode - 0x02);
573 if (!is_graphic_console()) {
574 /* display grab if going to a text console */
583 } else if (!is_graphic_console()) {
586 if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
587 switch(ev->key.keysym.sym) {
588 case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
589 case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
590 case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
591 case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
592 case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
593 case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
594 case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
595 case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
599 switch(ev->key.keysym.sym) {
600 case SDLK_UP: keysym = QEMU_KEY_UP; break;
601 case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
602 case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
603 case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
604 case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
605 case SDLK_END: keysym = QEMU_KEY_END; break;
606 case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
607 case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
608 case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
609 case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
614 kbd_put_keysym(keysym);
615 } else if (ev->key.keysym.unicode != 0) {
616 kbd_put_keysym(ev->key.keysym.unicode);
619 } else if (ev->type == SDL_KEYUP) {
621 mod_state = (ev->key.keysym.mod & gui_grab_code);
623 mod_state = (ev->key.keysym.mod &
624 (gui_grab_code | KMOD_LSHIFT));
627 if (gui_key_modifier_pressed) {
628 gui_key_modifier_pressed = 0;
629 if (gui_keysym == 0) {
630 /* exit/enter grab if pressing Ctrl-Alt */
632 /* if the application is not active,
633 do not try to enter grab state. It
635 'SDL_WM_GrabInput(SDL_GRAB_ON)'
636 from blocking all the application
638 if (SDL_GetAppState() & SDL_APPACTIVE)
643 /* SDL does not send back all the
644 modifiers key, so we must correct it */
652 if (is_graphic_console() && !gui_keysym)
653 sdl_process_key(&ev->key);
657 qemu_system_shutdown_request();
659 case SDL_MOUSEMOTION:
660 if (gui_grab || kbd_mouse_is_absolute() ||
662 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
663 ev->motion.x, ev->motion.y, ev->motion.state);
666 case SDL_MOUSEBUTTONDOWN:
667 case SDL_MOUSEBUTTONUP:
669 SDL_MouseButtonEvent *bev = &ev->button;
670 if (!gui_grab && !kbd_mouse_is_absolute()) {
671 if (ev->type == SDL_MOUSEBUTTONDOWN &&
672 (bev->button == SDL_BUTTON_LEFT)) {
673 /* start grabbing all events */
679 if (ev->type == SDL_MOUSEBUTTONDOWN) {
680 buttonstate |= SDL_BUTTON(bev->button);
682 buttonstate &= ~SDL_BUTTON(bev->button);
684 #ifdef SDL_BUTTON_WHEELUP
685 if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
687 } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
691 sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
695 case SDL_ACTIVEEVENT:
696 if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
697 !ev->active.gain && !gui_fullscreen_initial_grab) {
700 if (ev->active.state & SDL_APPACTIVE) {
701 if (ev->active.gain) {
702 /* Back to default interval */
703 dcl->gui_timer_interval = 0;
706 /* Sleeping interval */
707 dcl->gui_timer_interval = 500;
712 case SDL_VIDEORESIZE:
714 SDL_ResizeEvent *rev = &ev->resize;
715 int bpp = real_screen->format->BitsPerPixel;
716 if (bpp != 16 && bpp != 32)
718 do_sdl_resize(rev->w, rev->h, bpp);
730 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
732 SDL_Rect dst = { x, y, w, h };
733 SDL_FillRect(real_screen, &dst, c);
736 static void sdl_mouse_warp(int x, int y, int on)
741 if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
742 SDL_SetCursor(guest_sprite);
743 if (!kbd_mouse_is_absolute() && !absolute_enabled)
749 guest_x = x, guest_y = y;
752 static void sdl_mouse_define(int width, int height, int bpp,
753 int hot_x, int hot_y,
754 uint8_t *image, uint8_t *mask)
756 uint8_t sprite[256], *line;
757 int x, y, dst, bypl, src = 0;
759 SDL_FreeCursor(guest_sprite);
761 memset(sprite, 0, 256);
762 bypl = ((width * bpp + 31) >> 5) << 2;
763 for (y = 0, dst = 0; y < height; y ++, image += bypl) {
765 for (x = 0; x < width; x ++, dst ++) {
768 src = *(line ++); src |= *(line ++); src |= *(line ++);
772 src = *(line ++); src |= *(line ++);
778 src = 0xf & (line[x >> 1] >> ((x & 1)) << 2);
781 src = 3 & (line[x >> 2] >> ((x & 3)) << 1);
784 src = 1 & (line[x >> 3] >> (x & 7));
788 sprite[dst >> 3] |= (1 << (~dst & 7)) & mask[dst >> 3];
791 guest_sprite = SDL_CreateCursor(sprite, mask, width, height, hot_x, hot_y);
794 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
795 SDL_SetCursor(guest_sprite);
798 static void sdl_cleanup(void)
801 SDL_FreeCursor(guest_sprite);
802 SDL_QuitSubSystem(SDL_INIT_VIDEO);
805 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
809 DisplayAllocator *da;
810 const SDL_VideoInfo *vi;
812 #if defined(__APPLE__)
813 /* always use generic keymaps */
814 if (!keyboard_layout)
815 keyboard_layout = "en-us";
817 if(keyboard_layout) {
818 kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
826 flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
827 if (SDL_Init (flags)) {
828 fprintf(stderr, "Could not initialize SDL - exiting\n");
831 vi = SDL_GetVideoInfo();
832 host_format = *(vi->vfmt);
834 dcl = qemu_mallocz(sizeof(DisplayChangeListener));
835 dcl->dpy_update = sdl_update;
836 dcl->dpy_resize = sdl_resize;
837 dcl->dpy_refresh = sdl_refresh;
838 dcl->dpy_setdata = sdl_setdata;
839 dcl->dpy_fill = sdl_fill;
840 ds->mouse_set = sdl_mouse_warp;
841 ds->cursor_define = sdl_mouse_define;
842 register_displaychangelistener(ds, dcl);
844 da = qemu_mallocz(sizeof(DisplayAllocator));
845 da->create_displaysurface = sdl_create_displaysurface;
846 da->resize_displaysurface = sdl_resize_displaysurface;
847 da->free_displaysurface = sdl_free_displaysurface;
848 if (register_displayallocator(ds, da) == da) {
849 DisplaySurface *surf;
850 surf = sdl_create_displaysurface(ds_get_width(ds), ds_get_height(ds));
851 defaultallocator_free_displaysurface(ds->surface);
856 sdl_update_caption();
857 SDL_EnableKeyRepeat(250, 50);
860 sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
861 sdl_cursor_normal = SDL_GetCursor();
866 gui_fullscreen_initial_grab = 1;