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
32 static SDL_Surface *screen;
33 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
34 static int last_vm_running;
35 static int gui_saved_grab;
36 static int gui_fullscreen;
37 static int gui_key_modifier_pressed;
38 static int gui_keysym;
40 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
42 // printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
43 SDL_UpdateRect(screen, x, y, w, h);
46 static void sdl_resize(DisplayState *ds, int w, int h)
50 // printf("resizing to %d %d\n", w, h);
52 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
53 flags |= SDL_RESIZABLE;
55 flags |= SDL_FULLSCREEN;
56 screen = SDL_SetVideoMode(w, h, 0, flags);
58 fprintf(stderr, "Could not open SDL display\n");
61 ds->data = screen->pixels;
62 ds->linesize = screen->pitch;
63 ds->depth = screen->format->BitsPerPixel;
66 static const uint32_t x_keycode_to_pc_keycode[61] = {
70 0x4be0, /* 100 Left */
72 0x4de0, /* 102 Right */
74 0x50e0, /* 104 Down */
75 0x51e0, /* 105 PgDn */
78 0x1ce0, /* 108 Enter */
79 0x1de0, /* 109 Ctrl-R */
80 0x451de1, /* 110 Pause */
81 0x37e0, /* 111 Print */
82 0x35e0, /* 112 Divide */
83 0x38e0, /* 113 Alt-R */
84 0x46e0, /* 114 Break */
117 0x47, /* 147 KP_HOME */
118 0x48, /* 148 KP_UP */
119 0x49, /* 149 KP_PgUp */
120 0x4b, /* 150 KP_Left */
122 0x4d, /* 152 KP_Right */
123 0x4f, /* 153 KP_End */
124 0x50, /* 154 KP_Down */
125 0x51, /* 155 KP_PgDn */
126 0x52, /* 156 KP_Ins */
127 0x53, /* 157 KP_Del */
130 static void sdl_process_key(SDL_KeyboardEvent *ev)
134 /* XXX: not portable, but avoids complicated mappings */
135 keycode = ev->keysym.scancode;
143 } else if (keycode < 97) {
144 keycode -= 8; /* just an offset */
148 /* use conversion table */
149 keycode = x_keycode_to_pc_keycode[keycode - 97];
154 /* now send the key code */
155 while (keycode != 0) {
157 if (ev->type == SDL_KEYUP)
164 static void sdl_update_caption(void)
169 strcat(buf, " [Stopped]");
172 strcat(buf, " - Press Ctrl-Shift to exit grab");
174 SDL_WM_SetCaption(buf, "QEMU");
177 static void sdl_grab_start(void)
180 SDL_WM_GrabInput(SDL_GRAB_ON);
181 /* dummy read to avoid moving the mouse */
182 SDL_GetRelativeMouseState(NULL, NULL);
184 sdl_update_caption();
187 static void sdl_grab_end(void)
189 SDL_WM_GrabInput(SDL_GRAB_OFF);
192 sdl_update_caption();
195 static void sdl_send_mouse_event(void)
197 int dx, dy, dz, state, buttons;
198 state = SDL_GetRelativeMouseState(&dx, &dy);
200 if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
201 buttons |= MOUSE_EVENT_LBUTTON;
202 if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
203 buttons |= MOUSE_EVENT_RBUTTON;
204 if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
205 buttons |= MOUSE_EVENT_MBUTTON;
206 /* XXX: test wheel */
208 #ifdef SDL_BUTTON_WHEELUP
209 if (state & SDL_BUTTON(SDL_BUTTON_WHEELUP))
211 if (state & SDL_BUTTON(SDL_BUTTON_WHEELDOWN))
214 kbd_mouse_event(dx, dy, dz, buttons);
217 static void toggle_full_screen(DisplayState *ds)
219 gui_fullscreen = !gui_fullscreen;
220 sdl_resize(ds, screen->w, screen->h);
221 if (gui_fullscreen) {
222 gui_saved_grab = gui_grab;
228 vga_update_display();
229 sdl_update(ds, 0, 0, screen->w, screen->h);
232 static void sdl_refresh(DisplayState *ds)
234 SDL_Event ev1, *ev = &ev1;
237 if (last_vm_running != vm_running) {
238 last_vm_running = vm_running;
239 sdl_update_caption();
242 vga_update_display();
243 while (SDL_PollEvent(ev)) {
245 case SDL_VIDEOEXPOSE:
246 sdl_update(ds, 0, 0, screen->w, screen->h);
250 if (ev->type == SDL_KEYDOWN) {
251 mod_state = (SDL_GetModState() & (KMOD_LSHIFT | KMOD_LCTRL)) ==
252 (KMOD_LSHIFT | KMOD_LCTRL);
253 gui_key_modifier_pressed = mod_state;
254 if (gui_key_modifier_pressed &&
255 ev->key.keysym.sym == SDLK_f) {
256 gui_keysym = ev->key.keysym.sym;
258 } else if (ev->type == SDL_KEYUP) {
259 mod_state = (SDL_GetModState() & (KMOD_LSHIFT | KMOD_LCTRL));
261 if (gui_key_modifier_pressed) {
264 toggle_full_screen(ds);
267 /* exit/enter grab if pressing Ctrl-Shift */
274 gui_key_modifier_pressed = 0;
279 sdl_process_key(&ev->key);
284 case SDL_MOUSEMOTION:
286 sdl_send_mouse_event();
289 case SDL_MOUSEBUTTONDOWN:
290 case SDL_MOUSEBUTTONUP:
292 SDL_MouseButtonEvent *bev = &ev->button;
294 if (ev->type == SDL_MOUSEBUTTONDOWN &&
295 (bev->state & SDL_BUTTON_LMASK)) {
296 /* start grabbing all events */
300 sdl_send_mouse_event();
304 case SDL_ACTIVEEVENT:
305 if (gui_grab && (ev->active.gain & SDL_ACTIVEEVENTMASK) == 0) {
315 static void sdl_cleanup(void)
320 void sdl_display_init(DisplayState *ds)
324 flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
325 if (SDL_Init (flags)) {
326 fprintf(stderr, "Could not initialize SDL - exiting\n");
331 /* NOTE: we still want Ctrl-C to work, so we undo the SDL redirections */
332 signal(SIGINT, SIG_DFL);
333 signal(SIGQUIT, SIG_DFL);
336 ds->dpy_update = sdl_update;
337 ds->dpy_resize = sdl_resize;
338 ds->dpy_refresh = sdl_refresh;
340 sdl_resize(ds, 640, 400);
341 sdl_update_caption();
342 SDL_EnableKeyRepeat(250, 50);