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 /* Avoid compiler warning because macro is redefined in SDL_syswm.h. */
26 #undef WIN32_LEAN_AND_MEAN
28 #include "qemu/osdep.h"
30 #include <SDL_syswm.h>
32 #include "qemu-common.h"
33 #include "qemu/cutils.h"
34 #include "ui/console.h"
36 #include "sysemu/sysemu.h"
42 static DisplayChangeListener *dcl;
43 static DisplaySurface *surface;
44 static SDL_Surface *real_screen;
45 static SDL_Surface *guest_screen = NULL;
46 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
47 static int last_vm_running;
48 static bool gui_saved_scaling;
49 static int gui_saved_width;
50 static int gui_saved_height;
51 static int gui_saved_grab;
52 static int gui_fullscreen;
53 static int gui_key_modifier_pressed;
54 static int gui_keysym;
55 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
56 static uint8_t modifiers_state[256];
57 static SDL_Cursor *sdl_cursor_normal;
58 static SDL_Cursor *sdl_cursor_hidden;
59 static int absolute_enabled = 0;
60 static int guest_cursor = 0;
61 static int guest_x, guest_y;
62 static SDL_Cursor *guest_sprite = NULL;
63 static SDL_PixelFormat host_format;
64 static int scaling_active = 0;
65 static Notifier mouse_mode_notifier;
66 static int idle_counter;
67 static const guint16 *keycode_map;
68 static size_t keycode_maplen;
70 #define SDL_REFRESH_INTERVAL_BUSY 10
71 #define SDL_MAX_IDLE_COUNT (2 * GUI_REFRESH_INTERVAL_DEFAULT \
72 / SDL_REFRESH_INTERVAL_BUSY + 1)
78 static void sdl_update(DisplayChangeListener *dcl,
79 int x, int y, int w, int h)
88 printf("SDL: Updating x=%d y=%d w=%d h=%d (scaling: %d)\n",
89 x, y, w, h, scaling_active);
93 if (!scaling_active) {
94 SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
96 if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
97 fprintf(stderr, "Zoom blit failed\n");
102 SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
105 static void do_sdl_resize(int width, int height, int bpp)
108 SDL_Surface *tmp_screen;
111 printf("SDL: Resizing to %dx%d bpp %d\n", width, height, bpp);
114 flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
115 if (gui_fullscreen) {
116 flags |= SDL_FULLSCREEN;
118 flags |= SDL_RESIZABLE;
121 flags |= SDL_NOFRAME;
124 tmp_screen = SDL_SetVideoMode(width, height, bpp, flags);
127 fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n",
128 width, height, bpp, SDL_GetError());
133 * Revert to the previous video mode if the change of resizing or
137 fprintf(stderr, "Failed to set SDL display (%dx%dx%d): %s\n",
138 width, height, bpp, SDL_GetError());
143 real_screen = tmp_screen;
146 static void sdl_switch(DisplayChangeListener *dcl,
147 DisplaySurface *new_surface)
151 /* temporary hack: allows to call sdl_switch to handle scaling changes */
153 surface = new_surface;
155 pf = qemu_pixelformat_from_pixman(surface->format);
157 if (!scaling_active) {
158 do_sdl_resize(surface_width(surface), surface_height(surface), 0);
159 } else if (real_screen->format->BitsPerPixel !=
160 surface_bits_per_pixel(surface)) {
161 do_sdl_resize(real_screen->w, real_screen->h,
162 surface_bits_per_pixel(surface));
165 if (guest_screen != NULL) {
166 SDL_FreeSurface(guest_screen);
170 printf("SDL: Creating surface with masks: %08x %08x %08x %08x\n",
171 pf.rmask, pf.gmask, pf.bmask, pf.amask);
174 guest_screen = SDL_CreateRGBSurfaceFrom
175 (surface_data(surface),
176 surface_width(surface), surface_height(surface),
177 surface_bits_per_pixel(surface), surface_stride(surface),
182 static bool sdl_check_format(DisplayChangeListener *dcl,
183 pixman_format_code_t format)
186 * We let SDL convert for us a few more formats than,
187 * the native ones. Thes are the ones I have tested.
189 return (format == PIXMAN_x8r8g8b8 ||
190 format == PIXMAN_b8g8r8x8 ||
191 format == PIXMAN_x1r5g5b5 ||
192 format == PIXMAN_r5g6b5);
195 /* generic keyboard conversion */
197 #include "sdl_keysym.h"
199 static kbd_layout_t *kbd_layout = NULL;
201 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
204 /* workaround for X11+SDL bug with AltGR */
205 keysym = ev->keysym.sym;
206 if (keysym == 0 && ev->keysym.scancode == 113)
208 /* For Japanese key '\' and '|' */
209 if (keysym == 92 && ev->keysym.scancode == 133) {
212 return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
216 static const guint16 *sdl_get_keymap(size_t *maplen)
219 *maplen = qemu_input_map_atset1_to_qcode_len;
220 return qemu_input_map_atset1_to_qcode;
222 #if defined(SDL_VIDEO_DRIVER_X11)
225 SDL_VERSION(&info.version);
226 if (SDL_GetWMInfo(&info) > 0) {
227 return qemu_xkeymap_mapping_table(
228 info.info.x11.display, maplen);
231 g_warning("Unsupported SDL video driver / platform.\n"
232 "Assuming Linux KBD scancodes, but probably wrong.\n"
234 "including the following information:\n"
236 " - Operating system\n"
237 " - SDL video driver\n");
238 *maplen = qemu_input_map_xorgkbd_to_qcode_len;
239 return qemu_input_map_xorgkbd_to_qcode;
243 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
248 if (ev->keysym.scancode > keycode_maplen) {
252 return keycode_map[ev->keysym.scancode];
255 static void reset_keys(void)
258 for(i = 0; i < 256; i++) {
259 if (modifiers_state[i]) {
260 qemu_input_event_send_key_number(dcl->con, i, false);
261 modifiers_state[i] = 0;
266 static void sdl_process_key(SDL_KeyboardEvent *ev)
270 if (ev->keysym.sym == SDLK_PAUSE) {
272 qemu_input_event_send_key_qcode(dcl->con, Q_KEY_CODE_PAUSE,
273 ev->type == SDL_KEYDOWN);
278 keycode = sdl_keyevent_to_keycode_generic(ev);
280 keycode = sdl_keyevent_to_keycode(ev);
285 /* sent when leaving window: reset the modifiers state */
288 case 0x2a: /* Left Shift */
289 case 0x36: /* Right Shift */
290 case 0x1d: /* Left CTRL */
291 case 0x9d: /* Right CTRL */
292 case 0x38: /* Left ALT */
293 case 0xb8: /* Right ALT */
294 if (ev->type == SDL_KEYUP)
295 modifiers_state[keycode] = 0;
297 modifiers_state[keycode] = 1;
299 #define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
300 #if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
301 /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
302 case 0x45: /* num lock */
303 case 0x3a: /* caps lock */
304 /* SDL does not send the key up event, so we generate it */
305 qemu_input_event_send_key_number(dcl->con, keycode, true);
306 qemu_input_event_send_key_number(dcl->con, keycode, false);
311 /* now send the key code */
312 qemu_input_event_send_key_number(dcl->con, keycode,
313 ev->type == SDL_KEYDOWN);
316 static void sdl_update_caption(void)
318 char win_title[1024];
319 char icon_title[1024];
320 const char *status = "";
322 if (!runstate_is_running())
323 status = " [Stopped]";
326 status = " - Press Ctrl-Alt-Shift-G to exit mouse grab";
328 status = " - Press Right-Ctrl-G to exit mouse grab";
330 status = " - Press Ctrl-Alt-G to exit mouse grab";
334 snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
335 snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
337 snprintf(win_title, sizeof(win_title), "QEMU%s", status);
338 snprintf(icon_title, sizeof(icon_title), "QEMU");
341 SDL_WM_SetCaption(win_title, icon_title);
344 static void sdl_hide_cursor(void)
349 if (qemu_input_is_absolute()) {
351 SDL_SetCursor(sdl_cursor_hidden);
357 static void sdl_show_cursor(void)
362 if (!qemu_input_is_absolute() || !qemu_console_is_graphic(NULL)) {
365 (gui_grab || qemu_input_is_absolute() || absolute_enabled))
366 SDL_SetCursor(guest_sprite);
368 SDL_SetCursor(sdl_cursor_normal);
372 static void sdl_grab_start(void)
375 * If the application is not active, do not try to enter grab state. This
376 * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
377 * application (SDL bug).
379 if (!(SDL_GetAppState() & SDL_APPINPUTFOCUS)) {
383 SDL_SetCursor(guest_sprite);
384 if (!qemu_input_is_absolute() && !absolute_enabled) {
385 SDL_WarpMouse(guest_x, guest_y);
389 SDL_WM_GrabInput(SDL_GRAB_ON);
391 sdl_update_caption();
394 static void sdl_grab_end(void)
396 SDL_WM_GrabInput(SDL_GRAB_OFF);
399 sdl_update_caption();
402 static void absolute_mouse_grab(void)
404 int mouse_x, mouse_y;
406 SDL_GetMouseState(&mouse_x, &mouse_y);
407 if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
408 mouse_y > 0 && mouse_y < real_screen->h - 1) {
413 static void sdl_mouse_mode_change(Notifier *notify, void *data)
415 if (qemu_input_is_absolute()) {
416 if (!absolute_enabled) {
417 absolute_enabled = 1;
418 if (qemu_console_is_graphic(NULL)) {
419 absolute_mouse_grab();
422 } else if (absolute_enabled) {
423 if (!gui_fullscreen) {
426 absolute_enabled = 0;
430 static void sdl_send_mouse_event(int dx, int dy, int x, int y, int state)
432 static uint32_t bmap[INPUT_BUTTON__MAX] = {
433 [INPUT_BUTTON_LEFT] = SDL_BUTTON(SDL_BUTTON_LEFT),
434 [INPUT_BUTTON_MIDDLE] = SDL_BUTTON(SDL_BUTTON_MIDDLE),
435 [INPUT_BUTTON_RIGHT] = SDL_BUTTON(SDL_BUTTON_RIGHT),
436 [INPUT_BUTTON_WHEEL_UP] = SDL_BUTTON(SDL_BUTTON_WHEELUP),
437 [INPUT_BUTTON_WHEEL_DOWN] = SDL_BUTTON(SDL_BUTTON_WHEELDOWN),
439 static uint32_t prev_state;
441 if (prev_state != state) {
442 qemu_input_update_buttons(dcl->con, bmap, prev_state, state);
446 if (qemu_input_is_absolute()) {
447 qemu_input_queue_abs(dcl->con, INPUT_AXIS_X, x,
449 qemu_input_queue_abs(dcl->con, INPUT_AXIS_Y, y,
460 qemu_input_queue_rel(dcl->con, INPUT_AXIS_X, dx);
461 qemu_input_queue_rel(dcl->con, INPUT_AXIS_Y, dy);
463 qemu_input_event_sync();
466 static void sdl_scale(int width, int height)
468 int bpp = real_screen->format->BitsPerPixel;
471 printf("SDL: Scaling to %dx%d bpp %d\n", width, height, bpp);
474 if (bpp != 16 && bpp != 32) {
477 do_sdl_resize(width, height, bpp);
481 static void toggle_full_screen(void)
483 int width = surface_width(surface);
484 int height = surface_height(surface);
485 int bpp = surface_bits_per_pixel(surface);
487 gui_fullscreen = !gui_fullscreen;
488 if (gui_fullscreen) {
489 gui_saved_width = real_screen->w;
490 gui_saved_height = real_screen->h;
491 gui_saved_scaling = scaling_active;
493 do_sdl_resize(width, height, bpp);
496 gui_saved_grab = gui_grab;
499 if (gui_saved_scaling) {
500 sdl_scale(gui_saved_width, gui_saved_height);
502 do_sdl_resize(width, height, 0);
504 if (!gui_saved_grab || !qemu_console_is_graphic(NULL)) {
508 graphic_hw_invalidate(NULL);
509 graphic_hw_update(NULL);
512 static void handle_keydown(SDL_Event *ev)
518 mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
519 (gui_grab_code | KMOD_LSHIFT);
520 } else if (ctrl_grab) {
521 mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
523 mod_state = (SDL_GetModState() & gui_grab_code) == gui_grab_code;
525 gui_key_modifier_pressed = mod_state;
527 if (gui_key_modifier_pressed) {
528 keycode = sdl_keyevent_to_keycode(&ev->key);
530 case 0x21: /* 'f' key on US keyboard */
531 toggle_full_screen();
534 case 0x22: /* 'g' key */
536 if (qemu_console_is_graphic(NULL)) {
539 } else if (!gui_fullscreen) {
544 case 0x16: /* 'u' key on US keyboard */
545 if (scaling_active) {
547 sdl_switch(dcl, NULL);
548 graphic_hw_invalidate(NULL);
549 graphic_hw_update(NULL);
553 case 0x02 ... 0x0a: /* '1' to '9' keys */
554 /* Reset the modifiers sent to the current console */
556 console_select(keycode - 0x02);
558 if (gui_fullscreen) {
561 if (!qemu_console_is_graphic(NULL)) {
562 /* release grab if going to a text console */
565 } else if (absolute_enabled) {
568 } else if (absolute_enabled) {
570 absolute_mouse_grab();
575 if (!gui_fullscreen) {
576 int width = MAX(real_screen->w + (keycode == 0x1b ? 50 : -50),
578 int height = (surface_height(surface) * width) /
579 surface_width(surface);
581 sdl_scale(width, height);
582 graphic_hw_invalidate(NULL);
583 graphic_hw_update(NULL);
589 } else if (!qemu_console_is_graphic(NULL)) {
592 if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
593 switch (ev->key.keysym.sym) {
595 keysym = QEMU_KEY_CTRL_UP;
598 keysym = QEMU_KEY_CTRL_DOWN;
601 keysym = QEMU_KEY_CTRL_LEFT;
604 keysym = QEMU_KEY_CTRL_RIGHT;
607 keysym = QEMU_KEY_CTRL_HOME;
610 keysym = QEMU_KEY_CTRL_END;
613 keysym = QEMU_KEY_CTRL_PAGEUP;
616 keysym = QEMU_KEY_CTRL_PAGEDOWN;
622 switch (ev->key.keysym.sym) {
624 keysym = QEMU_KEY_UP;
627 keysym = QEMU_KEY_DOWN;
630 keysym = QEMU_KEY_LEFT;
633 keysym = QEMU_KEY_RIGHT;
636 keysym = QEMU_KEY_HOME;
639 keysym = QEMU_KEY_END;
642 keysym = QEMU_KEY_PAGEUP;
645 keysym = QEMU_KEY_PAGEDOWN;
648 keysym = QEMU_KEY_BACKSPACE;
651 keysym = QEMU_KEY_DELETE;
658 kbd_put_keysym(keysym);
659 } else if (ev->key.keysym.unicode != 0) {
660 kbd_put_keysym(ev->key.keysym.unicode);
663 if (qemu_console_is_graphic(NULL) && !gui_keysym) {
664 sdl_process_key(&ev->key);
668 static void handle_keyup(SDL_Event *ev)
673 mod_state = (ev->key.keysym.mod & gui_grab_code);
675 mod_state = (ev->key.keysym.mod & (gui_grab_code | KMOD_LSHIFT));
677 if (!mod_state && gui_key_modifier_pressed) {
678 gui_key_modifier_pressed = 0;
681 if (qemu_console_is_graphic(NULL) && !gui_keysym) {
682 sdl_process_key(&ev->key);
686 static void handle_mousemotion(SDL_Event *ev)
690 if (qemu_console_is_graphic(NULL) &&
691 (qemu_input_is_absolute() || absolute_enabled)) {
692 max_x = real_screen->w - 1;
693 max_y = real_screen->h - 1;
694 if (gui_grab && (ev->motion.x == 0 || ev->motion.y == 0 ||
695 ev->motion.x == max_x || ev->motion.y == max_y)) {
699 (ev->motion.x > 0 && ev->motion.x < max_x &&
700 ev->motion.y > 0 && ev->motion.y < max_y)) {
704 if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
705 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel,
706 ev->motion.x, ev->motion.y, ev->motion.state);
710 static void handle_mousebutton(SDL_Event *ev)
712 int buttonstate = SDL_GetMouseState(NULL, NULL);
713 SDL_MouseButtonEvent *bev;
715 if (!qemu_console_is_graphic(NULL)) {
720 if (!gui_grab && !qemu_input_is_absolute()) {
721 if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
722 /* start grabbing all events */
726 if (ev->type == SDL_MOUSEBUTTONDOWN) {
727 buttonstate |= SDL_BUTTON(bev->button);
729 buttonstate &= ~SDL_BUTTON(bev->button);
731 sdl_send_mouse_event(0, 0, bev->x, bev->y, buttonstate);
735 static void handle_activation(SDL_Event *ev)
738 /* Disable grab if the window no longer has the focus
739 * (Windows-only workaround) */
740 if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
741 !ev->active.gain && !gui_fullscreen) {
745 if (!gui_grab && ev->active.gain && qemu_console_is_graphic(NULL) &&
746 (qemu_input_is_absolute() || absolute_enabled)) {
747 absolute_mouse_grab();
749 if (ev->active.state & SDL_APPACTIVE) {
750 if (ev->active.gain) {
751 /* Back to default interval */
752 update_displaychangelistener(dcl, GUI_REFRESH_INTERVAL_DEFAULT);
754 /* Sleeping interval. Not using the long default here as
755 * sdl_refresh does not only update the guest screen, but
756 * also checks for gui events. */
757 update_displaychangelistener(dcl, 500);
762 static void sdl_refresh(DisplayChangeListener *dcl)
764 SDL_Event ev1, *ev = &ev1;
767 if (last_vm_running != runstate_is_running()) {
768 last_vm_running = runstate_is_running();
769 sdl_update_caption();
772 graphic_hw_update(NULL);
773 SDL_EnableUNICODE(!qemu_console_is_graphic(NULL));
775 while (SDL_PollEvent(ev)) {
777 case SDL_VIDEOEXPOSE:
778 sdl_update(dcl, 0, 0, real_screen->w, real_screen->h);
791 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
794 case SDL_MOUSEMOTION:
796 handle_mousemotion(ev);
798 case SDL_MOUSEBUTTONDOWN:
799 case SDL_MOUSEBUTTONUP:
801 handle_mousebutton(ev);
803 case SDL_ACTIVEEVENT:
804 handle_activation(ev);
806 case SDL_VIDEORESIZE:
807 sdl_scale(ev->resize.w, ev->resize.h);
808 graphic_hw_invalidate(NULL);
809 graphic_hw_update(NULL);
817 if (idle_counter < SDL_MAX_IDLE_COUNT) {
819 if (idle_counter >= SDL_MAX_IDLE_COUNT) {
820 dcl->update_interval = GUI_REFRESH_INTERVAL_DEFAULT;
825 dcl->update_interval = SDL_REFRESH_INTERVAL_BUSY;
829 static void sdl_mouse_warp(DisplayChangeListener *dcl,
830 int x, int y, int on)
835 if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
836 SDL_SetCursor(guest_sprite);
837 if (!qemu_input_is_absolute() && !absolute_enabled) {
844 guest_x = x, guest_y = y;
847 static void sdl_mouse_define(DisplayChangeListener *dcl,
850 uint8_t *image, *mask;
854 SDL_FreeCursor(guest_sprite);
856 bpl = cursor_get_mono_bpl(c);
857 image = g_malloc0(bpl * c->height);
858 mask = g_malloc0(bpl * c->height);
859 cursor_get_mono_image(c, 0x000000, image);
860 cursor_get_mono_mask(c, 0, mask);
861 guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
867 (gui_grab || qemu_input_is_absolute() || absolute_enabled))
868 SDL_SetCursor(guest_sprite);
871 static void sdl_cleanup(void)
874 SDL_FreeCursor(guest_sprite);
875 SDL_QuitSubSystem(SDL_INIT_VIDEO);
878 static const DisplayChangeListenerOps dcl_ops = {
880 .dpy_gfx_update = sdl_update,
881 .dpy_gfx_switch = sdl_switch,
882 .dpy_gfx_check_format = sdl_check_format,
883 .dpy_refresh = sdl_refresh,
884 .dpy_mouse_set = sdl_mouse_warp,
885 .dpy_cursor_define = sdl_mouse_define,
888 void sdl_display_early_init(int opengl)
890 if (opengl == 1 /* on */) {
892 "SDL1 display code has no opengl support.\n"
893 "Please recompile qemu with SDL2, using\n"
894 "./configure --enable-sdl --with-sdlabi=2.0\n");
898 void sdl_display_init(DisplayState *ds, int full_screen)
902 const SDL_VideoInfo *vi;
906 #if defined(__APPLE__)
907 /* always use generic keymaps */
908 if (!keyboard_layout)
909 keyboard_layout = "en-us";
911 if(keyboard_layout) {
912 kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
917 g_printerr("Running QEMU with SDL 1.2 is deprecated, and will be removed\n"
918 "in a future release. Please switch to SDL 2.0 instead\n");
921 setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
924 /* on Linux, SDL may use fbcon|directfb|svgalib when run without
925 * accessible $DISPLAY to open X11 window. This is often the case
926 * when qemu is run using sudo. But in this case, and when actually
927 * run in X11 environment, SDL fights with X11 for the video card,
928 * making current display unavailable, often until reboot.
929 * So make x11 the default SDL video driver if this variable is unset.
930 * This is a bit hackish but saves us from bigger problem.
931 * Maybe it's a good idea to fix this in SDL instead.
933 setenv("SDL_VIDEODRIVER", "x11", 0);
936 /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
937 * This requires SDL >= 1.2.14. */
938 setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
940 flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
941 if (SDL_Init (flags)) {
942 fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
946 vi = SDL_GetVideoInfo();
947 host_format = *(vi->vfmt);
949 keycode_map = sdl_get_keymap(&keycode_maplen);
951 /* Load a 32x32x4 image. White pixels are transparent. */
952 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
954 SDL_Surface *image = SDL_LoadBMP(filename);
956 uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
957 SDL_SetColorKey(image, SDL_SRCCOLORKEY, colorkey);
958 SDL_WM_SetIcon(image, NULL);
968 dcl = g_new0(DisplayChangeListener, 1);
970 register_displaychangelistener(dcl);
972 mouse_mode_notifier.notify = sdl_mouse_mode_change;
973 qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
975 sdl_update_caption();
976 SDL_EnableKeyRepeat(250, 50);
979 sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
980 sdl_cursor_normal = SDL_GetCursor();
982 memset(&info, 0, sizeof(info));
983 SDL_VERSION(&info.version);
984 if (SDL_GetWMInfo(&info)) {
987 /* All consoles share the same window */
988 QemuConsole *con = qemu_console_lookup_by_index(i);
990 #if defined(SDL_VIDEO_DRIVER_X11)
991 qemu_console_set_window_id(con, info.info.x11.wmwindow);
992 #elif defined(SDL_VIDEO_DRIVER_NANOX) || \
993 defined(SDL_VIDEO_DRIVER_WINDIB) || defined(SDL_VIDEO_DRIVER_DDRAW) || \
994 defined(SDL_VIDEO_DRIVER_GAPI) || \
995 defined(SDL_VIDEO_DRIVER_RISCOS)
996 qemu_console_set_window_id(con, (int) (uintptr_t) info.window);
998 qemu_console_set_window_id(con, info.data);
1006 atexit(sdl_cleanup);