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qemu/sdl.c
bellard c66b0d4cf4 avoid stopping QEMU when switching desktops with Ctrl-Alt-x 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1954 c046a42c-6fe2-441c-8c8c-71466251a162
2006-06-13 12:03:53 +00:00

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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.
*/
#include "vl.h"
#include <SDL.h>
#ifndef _WIN32
#include <signal.h>
#endif
static SDL_Surface *screen;
static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
static int last_vm_running;
static int gui_saved_grab;
static int gui_fullscreen;
static int gui_key_modifier_pressed;
static int gui_keysym;
static int gui_fullscreen_initial_grab;
static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
static uint8_t modifiers_state[256];
static int width, height;
static SDL_Cursor *sdl_cursor_normal;
static SDL_Cursor *sdl_cursor_hidden;
static int absolute_enabled = 0;
static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
{
// printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
SDL_UpdateRect(screen, x, y, w, h);
}
static void sdl_resize(DisplayState *ds, int w, int h)
{
int flags;
// printf("resizing to %d %d\n", w, h);
flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
if (gui_fullscreen)
flags |= SDL_FULLSCREEN;
width = w;
height = h;
again:
screen = SDL_SetVideoMode(w, h, 0, flags);
if (!screen) {
fprintf(stderr, "Could not open SDL display\n");
exit(1);
}
if (!screen->pixels && (flags & SDL_HWSURFACE) && (flags & SDL_FULLSCREEN)) {
flags &= ~SDL_HWSURFACE;
goto again;
}
if (!screen->pixels) {
fprintf(stderr, "Could not open SDL display\n");
exit(1);
}
ds->data = screen->pixels;
ds->linesize = screen->pitch;
ds->depth = screen->format->BitsPerPixel;
if (ds->depth == 32 && screen->format->Rshift == 0) {
ds->bgr = 1;
} else {
ds->bgr = 0;
}
ds->width = w;
ds->height = h;
}
/* generic keyboard conversion */
#include "sdl_keysym.h"
#include "keymaps.c"
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;
return keysym2scancode(kbd_layout, keysym);
}
/* 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
static const uint8_t x_keycode_to_pc_keycode[61] = {
0xc7, /* 97 Home */
0xc8, /* 98 Up */
0xc9, /* 99 PgUp */
0xcb, /* 100 Left */
0x4c, /* 101 KP-5 */
0xcd, /* 102 Right */
0xcf, /* 103 End */
0xd0, /* 104 Down */
0xd1, /* 105 PgDn */
0xd2, /* 106 Ins */
0xd3, /* 107 Del */
0x9c, /* 108 Enter */
0x9d, /* 109 Ctrl-R */
0x0, /* 110 Pause */
0xb7, /* 111 Print */
0xb5, /* 112 Divide */
0xb8, /* 113 Alt-R */
0xc6, /* 114 Break */
0x0, /* 115 */
0x0, /* 116 */
0x0, /* 117 */
0x0, /* 118 */
0x0, /* 119 */
0x70, /* 120 Hiragana_Katakana */
0x0, /* 121 */
0x0, /* 122 */
0x73, /* 123 backslash */
0x0, /* 124 */
0x0, /* 125 */
0x0, /* 126 */
0x0, /* 127 */
0x0, /* 128 */
0x79, /* 129 Henkan */
0x0, /* 130 */
0x7b, /* 131 Muhenkan */
0x0, /* 132 */
0x7d, /* 133 Yen */
0x0, /* 134 */
0x0, /* 135 */
0x47, /* 136 KP_7 */
0x48, /* 137 KP_8 */
0x49, /* 138 KP_9 */
0x4b, /* 139 KP_4 */
0x4c, /* 140 KP_5 */
0x4d, /* 141 KP_6 */
0x4f, /* 142 KP_1 */
0x50, /* 143 KP_2 */
0x51, /* 144 KP_3 */
0x52, /* 145 KP_0 */
0x53, /* 146 KP_. */
0x47, /* 147 KP_HOME */
0x48, /* 148 KP_UP */
0x49, /* 149 KP_PgUp */
0x4b, /* 150 KP_Left */
0x4c, /* 151 KP_ */
0x4d, /* 152 KP_Right */
0x4f, /* 153 KP_End */
0x50, /* 154 KP_Down */
0x51, /* 155 KP_PgDn */
0x52, /* 156 KP_Ins */
0x53, /* 157 KP_Del */
};
static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
{
int keycode;
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 */
keycode = x_keycode_to_pc_keycode[keycode - 97];
} 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 & 0x80)
kbd_put_keycode(0xe0);
kbd_put_keycode(i | 0x80);
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 |= 0x80;
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;
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 | 0x80);
return;
}
/* now send the key code */
if (keycode & 0x80)
kbd_put_keycode(0xe0);
if (ev->type == SDL_KEYUP)
kbd_put_keycode(keycode | 0x80);
else
kbd_put_keycode(keycode & 0x7f);
}
static void sdl_update_caption(void)
{
char buf[1024];
strcpy(buf, "QEMU");
if (!vm_running) {
strcat(buf, " [Stopped]");
}
if (gui_grab) {
strcat(buf, " - Press Ctrl-Alt to exit grab");
}
SDL_WM_SetCaption(buf, "QEMU");
}
static void sdl_hide_cursor(void)
{
if (kbd_mouse_is_absolute()) {
SDL_ShowCursor(1);
SDL_SetCursor(sdl_cursor_hidden);
} else {
SDL_ShowCursor(0);
}
}
static void sdl_show_cursor(void)
{
if (!kbd_mouse_is_absolute()) {
SDL_ShowCursor(1);
}
}
static void sdl_grab_start(void)
{
sdl_hide_cursor();
SDL_WM_GrabInput(SDL_GRAB_ON);
/* dummy read to avoid moving the mouse */
SDL_GetRelativeMouseState(NULL, NULL);
gui_grab = 1;
sdl_update_caption();
}
static void sdl_grab_end(void)
{
SDL_WM_GrabInput(SDL_GRAB_OFF);
sdl_show_cursor();
gui_grab = 0;
sdl_update_caption();
}
static void sdl_send_mouse_event(int dz)
{
int dx, dy, state, buttons;
state = SDL_GetRelativeMouseState(&dx, &dy);
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()) {
if (!absolute_enabled) {
sdl_hide_cursor();
if (gui_grab) {
sdl_grab_end();
}
absolute_enabled = 1;
}
SDL_GetMouseState(&dx, &dy);
dx = dx * 0x7FFF / width;
dy = dy * 0x7FFF / height;
}
kbd_mouse_event(dx, dy, dz, buttons);
}
static void toggle_full_screen(DisplayState *ds)
{
gui_fullscreen = !gui_fullscreen;
sdl_resize(ds, screen->w, screen->h);
if (gui_fullscreen) {
gui_saved_grab = gui_grab;
sdl_grab_start();
} else {
if (!gui_saved_grab)
sdl_grab_end();
}
vga_hw_invalidate();
vga_hw_update();
}
static void sdl_refresh(DisplayState *ds)
{
SDL_Event ev1, *ev = &ev1;
int mod_state;
if (last_vm_running != vm_running) {
last_vm_running = vm_running;
sdl_update_caption();
}
vga_hw_update();
while (SDL_PollEvent(ev)) {
switch (ev->type) {
case SDL_VIDEOEXPOSE:
sdl_update(ds, 0, 0, screen->w, screen->h);
break;
case SDL_KEYDOWN:
case SDL_KEYUP:
if (ev->type == SDL_KEYDOWN) {
mod_state = (SDL_GetModState() & gui_grab_code) ==
gui_grab_code;
gui_key_modifier_pressed = mod_state;
if (gui_key_modifier_pressed) {
int keycode;
keycode = sdl_keyevent_to_keycode(&ev->key);
switch(keycode) {
case 0x21: /* 'f' key on US keyboard */
toggle_full_screen(ds);
gui_keysym = 1;
break;
case 0x02 ... 0x0a: /* '1' to '9' keys */
console_select(keycode - 0x02);
if (!is_graphic_console()) {
/* display grab if going to a text console */
if (gui_grab)
sdl_grab_end();
}
gui_keysym = 1;
break;
default:
break;
}
} else if (!is_graphic_console()) {
int keysym;
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);
}
}
} else if (ev->type == SDL_KEYUP) {
mod_state = (ev->key.keysym.mod & gui_grab_code);
if (!mod_state) {
if (gui_key_modifier_pressed) {
gui_key_modifier_pressed = 0;
if (gui_keysym == 0) {
/* exit/enter grab if pressing Ctrl-Alt */
if (!gui_grab) {
/* if the application is not active,
do not try to enter grab state. It
prevents
'SDL_WM_GrabInput(SDL_GRAB_ON)'
from blocking all the application
(SDL bug). */
if (SDL_GetAppState() & SDL_APPACTIVE)
sdl_grab_start();
} else {
sdl_grab_end();
}
/* SDL does not send back all the
modifiers key, so we must correct it */
reset_keys();
break;
}
gui_keysym = 0;
}
}
}
if (is_graphic_console())
sdl_process_key(&ev->key);
break;
case SDL_QUIT:
qemu_system_shutdown_request();
break;
case SDL_MOUSEMOTION:
if (gui_grab || kbd_mouse_is_absolute()) {
sdl_send_mouse_event(0);
}
break;
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
{
SDL_MouseButtonEvent *bev = &ev->button;
if (!gui_grab && !kbd_mouse_is_absolute()) {
if (ev->type == SDL_MOUSEBUTTONDOWN &&
(bev->state & SDL_BUTTON_LMASK)) {
/* start grabbing all events */
sdl_grab_start();
}
} else {
int dz;
dz = 0;
#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(dz);
}
}
break;
case SDL_ACTIVEEVENT:
if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
!ev->active.gain && !gui_fullscreen_initial_grab) {
sdl_grab_end();
}
break;
default:
break;
}
}
}
static void sdl_cleanup(void)
{
SDL_Quit();
}
void sdl_display_init(DisplayState *ds, int full_screen)
{
int flags;
uint8_t data = 0;
#if defined(__APPLE__)
/* always use generic keymaps */
if (!keyboard_layout)
keyboard_layout = "en-us";
#endif
if(keyboard_layout) {
kbd_layout = init_keyboard_layout(keyboard_layout);
if (!kbd_layout)
exit(1);
}
flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
if (SDL_Init (flags)) {
fprintf(stderr, "Could not initialize SDL - exiting\n");
exit(1);
}
#ifndef _WIN32
/* NOTE: we still want Ctrl-C to work, so we undo the SDL redirections */
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
#endif
ds->dpy_update = sdl_update;
ds->dpy_resize = sdl_resize;
ds->dpy_refresh = sdl_refresh;
sdl_resize(ds, 640, 400);
sdl_update_caption();
SDL_EnableKeyRepeat(250, 50);
SDL_EnableUNICODE(1);
gui_grab = 0;
sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
sdl_cursor_normal = SDL_GetCursor();
atexit(sdl_cleanup);
if (full_screen) {
gui_fullscreen = 1;
gui_fullscreen_initial_grab = 1;
sdl_grab_start();
}
}
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