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qemu/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.
*/
#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 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;
flags |= SDL_RESIZABLE;
if (gui_fullscreen)
flags |= SDL_FULLSCREEN;
screen = SDL_SetVideoMode(w, h, 0, flags);
if (!screen) {
fprintf(stderr, "Could not open SDL display\n");
exit(1);
}
ds->data = screen->pixels;
ds->linesize = screen->pitch;
ds->depth = screen->format->BitsPerPixel;
}
static const uint32_t x_keycode_to_pc_keycode[61] = {
0x47e0, /* 97 Home */
0x48e0, /* 98 Up */
0x49e0, /* 99 PgUp */
0x4be0, /* 100 Left */
0x4c, /* 101 KP-5 */
0x4de0, /* 102 Right */
0x4fe0, /* 103 End */
0x50e0, /* 104 Down */
0x51e0, /* 105 PgDn */
0x52e0, /* 106 Ins */
0x53e0, /* 107 Del */
0x1ce0, /* 108 Enter */
0x1de0, /* 109 Ctrl-R */
0x451de1, /* 110 Pause */
0x37e0, /* 111 Print */
0x35e0, /* 112 Divide */
0x38e0, /* 113 Alt-R */
0x46e0, /* 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 void sdl_process_key(SDL_KeyboardEvent *ev)
{
int keycode, v;
/* XXX: not portable, but avoids complicated mappings */
keycode = ev->keysym.scancode;
#ifndef _WIN32
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;
}
#endif
/* now send the key code */
while (keycode != 0) {
v = keycode & 0xff;
if (ev->type == SDL_KEYUP)
v |= 0x80;
kbd_put_keycode(v);
keycode >>= 8;
}
}
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-Shift to exit grab");
}
SDL_WM_SetCaption(buf, "QEMU");
}
static void sdl_grab_start(void)
{
SDL_ShowCursor(0);
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_ShowCursor(1);
gui_grab = 0;
sdl_update_caption();
}
static void sdl_send_mouse_event(void)
{
int dx, dy, dz, 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;
/* XXX: test wheel */
dz = 0;
#ifdef SDL_BUTTON_WHEELUP
if (state & SDL_BUTTON(SDL_BUTTON_WHEELUP))
dz--;
if (state & SDL_BUTTON(SDL_BUTTON_WHEELDOWN))
dz++;
#endif
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_update_display();
sdl_update(ds, 0, 0, screen->w, screen->h);
}
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_update_display();
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() & (KMOD_LSHIFT | KMOD_LCTRL)) ==
(KMOD_LSHIFT | KMOD_LCTRL);
gui_key_modifier_pressed = mod_state;
if (gui_key_modifier_pressed &&
ev->key.keysym.sym == SDLK_f) {
gui_keysym = ev->key.keysym.sym;
}
} else if (ev->type == SDL_KEYUP) {
mod_state = (SDL_GetModState() & (KMOD_LSHIFT | KMOD_LCTRL));
if (!mod_state) {
if (gui_key_modifier_pressed) {
switch(gui_keysym) {
case SDLK_f:
toggle_full_screen(ds);
break;
case 0:
/* exit/enter grab if pressing Ctrl-Shift */
if (!gui_grab)
sdl_grab_start();
else
sdl_grab_end();
break;
}
gui_key_modifier_pressed = 0;
gui_keysym = 0;
}
}
}
sdl_process_key(&ev->key);
break;
case SDL_QUIT:
reset_requested = 1;
break;
case SDL_MOUSEMOTION:
if (gui_grab) {
sdl_send_mouse_event();
}
break;
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
{
SDL_MouseButtonEvent *bev = &ev->button;
if (!gui_grab) {
if (ev->type == SDL_MOUSEBUTTONDOWN &&
(bev->state & SDL_BUTTON_LMASK)) {
/* start grabbing all events */
sdl_grab_start();
}
} else {
sdl_send_mouse_event();
}
}
break;
case SDL_ACTIVEEVENT:
if (gui_grab && (ev->active.gain & SDL_ACTIVEEVENTMASK) == 0) {
sdl_grab_end();
}
break;
default:
break;
}
}
}
static void sdl_cleanup(void)
{
SDL_Quit();
}
void sdl_display_init(DisplayState *ds)
{
int flags;
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);
gui_grab = 0;
atexit(sdl_cleanup);
}
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