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qemu/ui/sdl.c

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/*
* QEMU SDL display driver
*
* Copyright (c) 2003 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/* Avoid compiler warning because macro is redefined in SDL_syswm.h. */
#undef WIN32_LEAN_AND_MEAN
#include <SDL.h>
#include <SDL_syswm.h>
#include "qemu-common.h"
#include "ui/console.h"
#include "sysemu/sysemu.h"
#include "x_keymap.h"
#include "sdl_zoom.h"
static DisplayChangeListener *dcl;
static DisplaySurface *surface;
static SDL_Surface *real_screen;
static SDL_Surface *guest_screen = NULL;
static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
static int last_vm_running;
static bool gui_saved_scaling;
static int gui_saved_width;
static int gui_saved_height;
static int gui_saved_grab;
static int gui_fullscreen;
static int gui_noframe;
static int gui_key_modifier_pressed;
static int gui_keysym;
static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
static uint8_t modifiers_state[256];
static SDL_Cursor *sdl_cursor_normal;
static SDL_Cursor *sdl_cursor_hidden;
static int absolute_enabled = 0;
static int guest_cursor = 0;
static int guest_x, guest_y;
static SDL_Cursor *guest_sprite = NULL;
static SDL_PixelFormat host_format;
static int scaling_active = 0;
static Notifier mouse_mode_notifier;
static void sdl_update(DisplayChangeListener *dcl,
int x, int y, int w, int h)
{
// printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
SDL_Rect rec;
rec.x = x;
rec.y = y;
rec.w = w;
rec.h = h;
if (guest_screen) {
if (!scaling_active) {
SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
} else {
if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
fprintf(stderr, "Zoom blit failed\n");
exit(1);
}
}
}
SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
}
static void do_sdl_resize(int width, int height, int bpp)
{
int flags;
// printf("resizing to %d %d\n", w, h);
flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
if (gui_fullscreen) {
flags |= SDL_FULLSCREEN;
} else {
flags |= SDL_RESIZABLE;
}
if (gui_noframe)
flags |= SDL_NOFRAME;
real_screen = SDL_SetVideoMode(width, height, bpp, flags);
if (!real_screen) {
fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n", width,
height, bpp, SDL_GetError());
exit(1);
}
}
static void sdl_switch(DisplayChangeListener *dcl,
DisplaySurface *new_surface)
{
/* temporary hack: allows to call sdl_switch to handle scaling changes */
if (new_surface) {
surface = new_surface;
}
if (!scaling_active) {
do_sdl_resize(surface_width(surface), surface_height(surface), 0);
} else if (real_screen->format->BitsPerPixel !=
surface_bits_per_pixel(surface)) {
do_sdl_resize(real_screen->w, real_screen->h,
surface_bits_per_pixel(surface));
}
if (guest_screen != NULL) {
SDL_FreeSurface(guest_screen);
}
guest_screen = SDL_CreateRGBSurfaceFrom
(surface_data(surface),
surface_width(surface), surface_height(surface),
surface_bits_per_pixel(surface), surface_stride(surface),
surface->pf.rmask, surface->pf.gmask,
surface->pf.bmask, surface->pf.amask);
}
/* generic keyboard conversion */
#include "sdl_keysym.h"
static kbd_layout_t *kbd_layout = NULL;
static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
{
int keysym;
/* workaround for X11+SDL bug with AltGR */
keysym = ev->keysym.sym;
if (keysym == 0 && ev->keysym.scancode == 113)
keysym = SDLK_MODE;
/* For Japanese key '\' and '|' */
if (keysym == 92 && ev->keysym.scancode == 133) {
keysym = 0xa5;
}
return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
}
/* specific keyboard conversions from scan codes */
#if defined(_WIN32)
static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
{
return ev->keysym.scancode;
}
#else
#if defined(SDL_VIDEO_DRIVER_X11)
#include <X11/XKBlib.h>
static int check_for_evdev(void)
{
SDL_SysWMinfo info;
XkbDescPtr desc = NULL;
int has_evdev = 0;
char *keycodes = NULL;
SDL_VERSION(&info.version);
if (!SDL_GetWMInfo(&info)) {
return 0;
}
desc = XkbGetKeyboard(info.info.x11.display,
XkbGBN_AllComponentsMask,
XkbUseCoreKbd);
if (desc && desc->names) {
keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
if (keycodes == NULL) {
fprintf(stderr, "could not lookup keycode name\n");
} else if (strstart(keycodes, "evdev", NULL)) {
has_evdev = 1;
} else if (!strstart(keycodes, "xfree86", NULL)) {
fprintf(stderr, "unknown keycodes `%s', please report to "
"qemu-devel@nongnu.org\n", keycodes);
}
}
if (desc) {
XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
}
if (keycodes) {
XFree(keycodes);
}
return has_evdev;
}
#else
static int check_for_evdev(void)
{
return 0;
}
#endif
static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
{
int keycode;
static int has_evdev = -1;
if (has_evdev == -1)
has_evdev = check_for_evdev();
keycode = ev->keysym.scancode;
if (keycode < 9) {
keycode = 0;
} else if (keycode < 97) {
keycode -= 8; /* just an offset */
} else if (keycode < 158) {
/* use conversion table */
if (has_evdev)
keycode = translate_evdev_keycode(keycode - 97);
else
keycode = translate_xfree86_keycode(keycode - 97);
} else if (keycode == 208) { /* Hiragana_Katakana */
keycode = 0x70;
} else if (keycode == 211) { /* backslash */
keycode = 0x73;
} else {
keycode = 0;
}
return keycode;
}
#endif
static void reset_keys(void)
{
int i;
for(i = 0; i < 256; i++) {
if (modifiers_state[i]) {
if (i & SCANCODE_GREY)
kbd_put_keycode(SCANCODE_EMUL0);
kbd_put_keycode(i | SCANCODE_UP);
modifiers_state[i] = 0;
}
}
}
static void sdl_process_key(SDL_KeyboardEvent *ev)
{
int keycode, v;
if (ev->keysym.sym == SDLK_PAUSE) {
/* specific case */
v = 0;
if (ev->type == SDL_KEYUP)
v |= SCANCODE_UP;
kbd_put_keycode(0xe1);
kbd_put_keycode(0x1d | v);
kbd_put_keycode(0x45 | v);
return;
}
if (kbd_layout) {
keycode = sdl_keyevent_to_keycode_generic(ev);
} else {
keycode = sdl_keyevent_to_keycode(ev);
}
switch(keycode) {
case 0x00:
/* sent when leaving window: reset the modifiers state */
reset_keys();
return;
case 0x2a: /* Left Shift */
case 0x36: /* Right Shift */
case 0x1d: /* Left CTRL */
case 0x9d: /* Right CTRL */
case 0x38: /* Left ALT */
case 0xb8: /* Right ALT */
if (ev->type == SDL_KEYUP)
modifiers_state[keycode] = 0;
else
modifiers_state[keycode] = 1;
break;
#define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
#if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
/* SDL versions before 1.2.14 don't support key up for caps/num lock. */
case 0x45: /* num lock */
case 0x3a: /* caps lock */
/* SDL does not send the key up event, so we generate it */
kbd_put_keycode(keycode);
kbd_put_keycode(keycode | SCANCODE_UP);
return;
#endif
}
/* now send the key code */
if (keycode & SCANCODE_GREY)
kbd_put_keycode(SCANCODE_EMUL0);
if (ev->type == SDL_KEYUP)
kbd_put_keycode(keycode | SCANCODE_UP);
else
kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
}
static void sdl_update_caption(void)
{
char win_title[1024];
char icon_title[1024];
const char *status = "";
if (!runstate_is_running())
status = " [Stopped]";
else if (gui_grab) {
if (alt_grab)
status = " - Press Ctrl-Alt-Shift to exit mouse grab";
else if (ctrl_grab)
status = " - Press Right-Ctrl to exit mouse grab";
else
status = " - Press Ctrl-Alt to exit mouse grab";
}
if (qemu_name) {
snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
} else {
snprintf(win_title, sizeof(win_title), "QEMU%s", status);
snprintf(icon_title, sizeof(icon_title), "QEMU");
}
SDL_WM_SetCaption(win_title, icon_title);
}
static void sdl_hide_cursor(void)
{
if (!cursor_hide)
return;
if (kbd_mouse_is_absolute()) {
SDL_ShowCursor(1);
SDL_SetCursor(sdl_cursor_hidden);
} else {
SDL_ShowCursor(0);
}
}
static void sdl_show_cursor(void)
{
if (!cursor_hide)
return;
if (!kbd_mouse_is_absolute() || !qemu_console_is_graphic(NULL)) {
SDL_ShowCursor(1);
if (guest_cursor &&
(gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
SDL_SetCursor(guest_sprite);
else
SDL_SetCursor(sdl_cursor_normal);
}
}
static void sdl_grab_start(void)
{
/*
* If the application is not active, do not try to enter grab state. This
* prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
* application (SDL bug).
*/
if (!(SDL_GetAppState() & SDL_APPINPUTFOCUS)) {
return;
}
if (guest_cursor) {
SDL_SetCursor(guest_sprite);
if (!kbd_mouse_is_absolute() && !absolute_enabled)
SDL_WarpMouse(guest_x, guest_y);
} else
sdl_hide_cursor();
SDL_WM_GrabInput(SDL_GRAB_ON);
gui_grab = 1;
sdl_update_caption();
}
static void sdl_grab_end(void)
{
SDL_WM_GrabInput(SDL_GRAB_OFF);
gui_grab = 0;
sdl_show_cursor();
sdl_update_caption();
}
static void absolute_mouse_grab(void)
{
int mouse_x, mouse_y;
SDL_GetMouseState(&mouse_x, &mouse_y);
if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
mouse_y > 0 && mouse_y < real_screen->h - 1) {
sdl_grab_start();
}
}
static void sdl_mouse_mode_change(Notifier *notify, void *data)
{
if (kbd_mouse_is_absolute()) {
if (!absolute_enabled) {
absolute_enabled = 1;
if (qemu_console_is_graphic(NULL)) {
absolute_mouse_grab();
}
}
} else if (absolute_enabled) {
if (!gui_fullscreen) {
sdl_grab_end();
}
absolute_enabled = 0;
}
}
static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
{
int buttons = 0;
if (state & SDL_BUTTON(SDL_BUTTON_LEFT)) {
buttons |= MOUSE_EVENT_LBUTTON;
}
if (state & SDL_BUTTON(SDL_BUTTON_RIGHT)) {
buttons |= MOUSE_EVENT_RBUTTON;
}
if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE)) {
buttons |= MOUSE_EVENT_MBUTTON;
}
if (kbd_mouse_is_absolute()) {
dx = x * 0x7FFF / (real_screen->w - 1);
dy = y * 0x7FFF / (real_screen->h - 1);
} else if (guest_cursor) {
x -= guest_x;
y -= guest_y;
guest_x += x;
guest_y += y;
dx = x;
dy = y;
}
kbd_mouse_event(dx, dy, dz, buttons);
}
static void sdl_scale(int width, int height)
{
int bpp = real_screen->format->BitsPerPixel;
if (bpp != 16 && bpp != 32) {
bpp = 32;
}
do_sdl_resize(width, height, bpp);
scaling_active = 1;
}
static void toggle_full_screen(void)
{
int width = surface_width(surface);
int height = surface_height(surface);
int bpp = surface_bits_per_pixel(surface);
gui_fullscreen = !gui_fullscreen;
if (gui_fullscreen) {
gui_saved_width = real_screen->w;
gui_saved_height = real_screen->h;
gui_saved_scaling = scaling_active;
do_sdl_resize(width, height, bpp);
scaling_active = 0;
gui_saved_grab = gui_grab;
sdl_grab_start();
} else {
if (gui_saved_scaling) {
sdl_scale(gui_saved_width, gui_saved_height);
} else {
do_sdl_resize(width, height, 0);
}
if (!gui_saved_grab || !qemu_console_is_graphic(NULL)) {
sdl_grab_end();
}
}
graphic_hw_invalidate(NULL);
graphic_hw_update(NULL);
}
static void handle_keydown(SDL_Event *ev)
{
int mod_state;
int keycode;
if (alt_grab) {
mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
(gui_grab_code | KMOD_LSHIFT);
} else if (ctrl_grab) {
mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
} else {
mod_state = (SDL_GetModState() & gui_grab_code) == gui_grab_code;
}
gui_key_modifier_pressed = mod_state;
if (gui_key_modifier_pressed) {
keycode = sdl_keyevent_to_keycode(&ev->key);
switch (keycode) {
case 0x21: /* 'f' key on US keyboard */
toggle_full_screen();
gui_keysym = 1;
break;
case 0x16: /* 'u' key on US keyboard */
if (scaling_active) {
scaling_active = 0;
sdl_switch(dcl, NULL);
graphic_hw_invalidate(NULL);
graphic_hw_update(NULL);
}
gui_keysym = 1;
break;
case 0x02 ... 0x0a: /* '1' to '9' keys */
/* Reset the modifiers sent to the current console */
reset_keys();
console_select(keycode - 0x02);
gui_keysym = 1;
if (gui_fullscreen) {
break;
}
if (!qemu_console_is_graphic(NULL)) {
/* release grab if going to a text console */
if (gui_grab) {
sdl_grab_end();
} else if (absolute_enabled) {
sdl_show_cursor();
}
} else if (absolute_enabled) {
sdl_hide_cursor();
absolute_mouse_grab();
}
break;
case 0x1b: /* '+' */
case 0x35: /* '-' */
if (!gui_fullscreen) {
int width = MAX(real_screen->w + (keycode == 0x1b ? 50 : -50),
160);
int height = (surface_height(surface) * width) /
surface_width(surface);
sdl_scale(width, height);
graphic_hw_invalidate(NULL);
graphic_hw_update(NULL);
gui_keysym = 1;
}
default:
break;
}
} else if (!qemu_console_is_graphic(NULL)) {
int keysym = 0;
if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
switch (ev->key.keysym.sym) {
case SDLK_UP:
keysym = QEMU_KEY_CTRL_UP;
break;
case SDLK_DOWN:
keysym = QEMU_KEY_CTRL_DOWN;
break;
case SDLK_LEFT:
keysym = QEMU_KEY_CTRL_LEFT;
break;
case SDLK_RIGHT:
keysym = QEMU_KEY_CTRL_RIGHT;
break;
case SDLK_HOME:
keysym = QEMU_KEY_CTRL_HOME;
break;
case SDLK_END:
keysym = QEMU_KEY_CTRL_END;
break;
case SDLK_PAGEUP:
keysym = QEMU_KEY_CTRL_PAGEUP;
break;
case SDLK_PAGEDOWN:
keysym = QEMU_KEY_CTRL_PAGEDOWN;
break;
default:
break;
}
} else {
switch (ev->key.keysym.sym) {
case SDLK_UP:
keysym = QEMU_KEY_UP;
break;
case SDLK_DOWN:
keysym = QEMU_KEY_DOWN;
break;
case SDLK_LEFT:
keysym = QEMU_KEY_LEFT;
break;
case SDLK_RIGHT:
keysym = QEMU_KEY_RIGHT;
break;
case SDLK_HOME:
keysym = QEMU_KEY_HOME;
break;
case SDLK_END:
keysym = QEMU_KEY_END;
break;
case SDLK_PAGEUP:
keysym = QEMU_KEY_PAGEUP;
break;
case SDLK_PAGEDOWN:
keysym = QEMU_KEY_PAGEDOWN;
break;
case SDLK_BACKSPACE:
keysym = QEMU_KEY_BACKSPACE;
break;
case SDLK_DELETE:
keysym = QEMU_KEY_DELETE;
break;
default:
break;
}
}
if (keysym) {
kbd_put_keysym(keysym);
} else if (ev->key.keysym.unicode != 0) {
kbd_put_keysym(ev->key.keysym.unicode);
}
}
if (qemu_console_is_graphic(NULL) && !gui_keysym) {
sdl_process_key(&ev->key);
}
}
static void handle_keyup(SDL_Event *ev)
{
int mod_state;
if (!alt_grab) {
mod_state = (ev->key.keysym.mod & gui_grab_code);
} else {
mod_state = (ev->key.keysym.mod & (gui_grab_code | KMOD_LSHIFT));
}
if (!mod_state && gui_key_modifier_pressed) {
gui_key_modifier_pressed = 0;
if (gui_keysym == 0) {
/* exit/enter grab if pressing Ctrl-Alt */
if (!gui_grab) {
if (qemu_console_is_graphic(NULL)) {
sdl_grab_start();
}
} else if (!gui_fullscreen) {
sdl_grab_end();
}
/* SDL does not send back all the modifiers key, so we must
* correct it. */
reset_keys();
return;
}
gui_keysym = 0;
}
if (qemu_console_is_graphic(NULL) && !gui_keysym) {
sdl_process_key(&ev->key);
}
}
static void handle_mousemotion(SDL_Event *ev)
{
int max_x, max_y;
if (qemu_console_is_graphic(NULL) &&
(kbd_mouse_is_absolute() || absolute_enabled)) {
max_x = real_screen->w - 1;
max_y = real_screen->h - 1;
if (gui_grab && (ev->motion.x == 0 || ev->motion.y == 0 ||
ev->motion.x == max_x || ev->motion.y == max_y)) {
sdl_grab_end();
}
if (!gui_grab &&
(ev->motion.x > 0 && ev->motion.x < max_x &&
ev->motion.y > 0 && ev->motion.y < max_y)) {
sdl_grab_start();
}
}
if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
ev->motion.x, ev->motion.y, ev->motion.state);
}
}
static void handle_mousebutton(SDL_Event *ev)
{
int buttonstate = SDL_GetMouseState(NULL, NULL);
SDL_MouseButtonEvent *bev;
int dz;
if (!qemu_console_is_graphic(NULL)) {
return;
}
bev = &ev->button;
if (!gui_grab && !kbd_mouse_is_absolute()) {
if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
/* start grabbing all events */
sdl_grab_start();
}
} else {
dz = 0;
if (ev->type == SDL_MOUSEBUTTONDOWN) {
buttonstate |= SDL_BUTTON(bev->button);
} else {
buttonstate &= ~SDL_BUTTON(bev->button);
}
#ifdef SDL_BUTTON_WHEELUP
if (bev->button == SDL_BUTTON_WHEELUP &&
ev->type == SDL_MOUSEBUTTONDOWN) {
dz = -1;
} else if (bev->button == SDL_BUTTON_WHEELDOWN &&
ev->type == SDL_MOUSEBUTTONDOWN) {
dz = 1;
}
#endif
sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
}
}
static void handle_activation(SDL_Event *ev)
{
#ifdef _WIN32
/* Disable grab if the window no longer has the focus
* (Windows-only workaround) */
if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
!ev->active.gain && !gui_fullscreen) {
sdl_grab_end();
}
#endif
if (!gui_grab && ev->active.gain && qemu_console_is_graphic(NULL) &&
(kbd_mouse_is_absolute() || absolute_enabled)) {
absolute_mouse_grab();
}
if (ev->active.state & SDL_APPACTIVE) {
if (ev->active.gain) {
/* Back to default interval */
update_displaychangelistener(dcl, GUI_REFRESH_INTERVAL_DEFAULT);
} else {
/* Sleeping interval. Not using the long default here as
* sdl_refresh does not only update the guest screen, but
* also checks for gui events. */
update_displaychangelistener(dcl, 500);
}
}
}
static void sdl_refresh(DisplayChangeListener *dcl)
{
SDL_Event ev1, *ev = &ev1;
if (last_vm_running != runstate_is_running()) {
last_vm_running = runstate_is_running();
sdl_update_caption();
}
graphic_hw_update(NULL);
SDL_EnableUNICODE(!qemu_console_is_graphic(NULL));
while (SDL_PollEvent(ev)) {
switch (ev->type) {
case SDL_VIDEOEXPOSE:
sdl_update(dcl, 0, 0, real_screen->w, real_screen->h);
break;
case SDL_KEYDOWN:
handle_keydown(ev);
break;
case SDL_KEYUP:
handle_keyup(ev);
break;
case SDL_QUIT:
if (!no_quit) {
no_shutdown = 0;
qemu_system_shutdown_request();
}
break;
case SDL_MOUSEMOTION:
handle_mousemotion(ev);
break;
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
handle_mousebutton(ev);
break;
case SDL_ACTIVEEVENT:
handle_activation(ev);
break;
case SDL_VIDEORESIZE:
sdl_scale(ev->resize.w, ev->resize.h);
graphic_hw_invalidate(NULL);
graphic_hw_update(NULL);
break;
default:
break;
}
}
}
static void sdl_mouse_warp(DisplayChangeListener *dcl,
int x, int y, int on)
{
if (on) {
if (!guest_cursor)
sdl_show_cursor();
if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
SDL_SetCursor(guest_sprite);
if (!kbd_mouse_is_absolute() && !absolute_enabled)
SDL_WarpMouse(x, y);
}
} else if (gui_grab)
sdl_hide_cursor();
guest_cursor = on;
guest_x = x, guest_y = y;
}
static void sdl_mouse_define(DisplayChangeListener *dcl,
QEMUCursor *c)
{
uint8_t *image, *mask;
int bpl;
if (guest_sprite)
SDL_FreeCursor(guest_sprite);
bpl = cursor_get_mono_bpl(c);
image = g_malloc0(bpl * c->height);
mask = g_malloc0(bpl * c->height);
cursor_get_mono_image(c, 0x000000, image);
cursor_get_mono_mask(c, 0, mask);
guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
c->hot_x, c->hot_y);
g_free(image);
g_free(mask);
if (guest_cursor &&
(gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
SDL_SetCursor(guest_sprite);
}
static void sdl_cleanup(void)
{
if (guest_sprite)
SDL_FreeCursor(guest_sprite);
SDL_QuitSubSystem(SDL_INIT_VIDEO);
}
static const DisplayChangeListenerOps dcl_ops = {
.dpy_name = "sdl",
.dpy_gfx_update = sdl_update,
.dpy_gfx_switch = sdl_switch,
.dpy_refresh = sdl_refresh,
.dpy_mouse_set = sdl_mouse_warp,
.dpy_cursor_define = sdl_mouse_define,
};
void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
{
int flags;
uint8_t data = 0;
const SDL_VideoInfo *vi;
char *filename;
#if defined(__APPLE__)
/* always use generic keymaps */
if (!keyboard_layout)
keyboard_layout = "en-us";
#endif
if(keyboard_layout) {
kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
if (!kbd_layout)
exit(1);
}
if (no_frame)
gui_noframe = 1;
if (!full_screen) {
setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
}
#ifdef __linux__
/* on Linux, SDL may use fbcon|directfb|svgalib when run without
* accessible $DISPLAY to open X11 window. This is often the case
* when qemu is run using sudo. But in this case, and when actually
* run in X11 environment, SDL fights with X11 for the video card,
* making current display unavailable, often until reboot.
* So make x11 the default SDL video driver if this variable is unset.
* This is a bit hackish but saves us from bigger problem.
* Maybe it's a good idea to fix this in SDL instead.
*/
setenv("SDL_VIDEODRIVER", "x11", 0);
#endif
/* Enable normal up/down events for Caps-Lock and Num-Lock keys.
* This requires SDL >= 1.2.14. */
setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
if (SDL_Init (flags)) {
fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
SDL_GetError());
exit(1);
}
vi = SDL_GetVideoInfo();
host_format = *(vi->vfmt);
/* Load a 32x32x4 image. White pixels are transparent. */
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
if (filename) {
SDL_Surface *image = SDL_LoadBMP(filename);
if (image) {
uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
SDL_SetColorKey(image, SDL_SRCCOLORKEY, colorkey);
SDL_WM_SetIcon(image, NULL);
}
g_free(filename);
}
if (full_screen) {
gui_fullscreen = 1;
sdl_grab_start();
}
dcl = g_malloc0(sizeof(DisplayChangeListener));
dcl->ops = &dcl_ops;
register_displaychangelistener(dcl);
mouse_mode_notifier.notify = sdl_mouse_mode_change;
qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
sdl_update_caption();
SDL_EnableKeyRepeat(250, 50);
gui_grab = 0;
sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
sdl_cursor_normal = SDL_GetCursor();
atexit(sdl_cleanup);
}
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