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 uint8_t x_keycode_to_pc_keycode[61] = {
79 0x9d, /* 109 Ctrl-R */
82 0xb5, /* 112 Divide */
90 0x70, /* 120 Hiragana_Katakana */
93 0x73, /* 123 backslash */
99 0x79, /* 129 Henkan */
101 0x7b, /* 131 Muhenkan */
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)
133 static uint8_t modifiers_state[256];
135 if (ev->keysym.sym == SDLK_PAUSE) {
138 if (ev->type == SDL_KEYUP)
140 kbd_put_keycode(0xe1);
141 kbd_put_keycode(0x1d | v);
142 kbd_put_keycode(0x45 | v);
146 /* XXX: not portable, but avoids complicated mappings */
147 keycode = ev->keysym.scancode;
149 /* XXX: windows version may not work: 0xe0/0xe1 should be trapped
154 } else if (keycode < 97) {
155 keycode -= 8; /* just an offset */
156 } else if (keycode < 158) {
157 /* use conversion table */
158 keycode = x_keycode_to_pc_keycode[keycode - 97];
166 /* sent when leaving window: reset the modifiers state */
167 for(i = 0; i < 256; i++) {
168 if (modifiers_state[i]) {
170 kbd_put_keycode(0xe0);
171 kbd_put_keycode(i | 0x80);
175 case 0x2a: /* Left Shift */
176 case 0x36: /* Right Shift */
177 case 0x1d: /* Left CTRL */
178 case 0x9d: /* Right CTRL */
179 case 0x38: /* Left ALT */
180 case 0xb8: /* Right ALT */
181 if (ev->type == SDL_KEYUP)
182 modifiers_state[keycode] = 0;
184 modifiers_state[keycode] = 1;
186 case 0x45: /* num lock */
187 case 0x3a: /* caps lock */
188 /* SDL does not send the key up event, so we generate it */
189 kbd_put_keycode(keycode);
190 kbd_put_keycode(keycode | 0x80);
194 /* now send the key code */
196 kbd_put_keycode(0xe0);
197 if (ev->type == SDL_KEYUP)
198 kbd_put_keycode(keycode | 0x80);
200 kbd_put_keycode(keycode & 0x7f);
203 static void sdl_update_caption(void)
208 strcat(buf, " [Stopped]");
211 strcat(buf, " - Press Ctrl-Shift to exit grab");
213 SDL_WM_SetCaption(buf, "QEMU");
216 static void sdl_grab_start(void)
219 SDL_WM_GrabInput(SDL_GRAB_ON);
220 /* dummy read to avoid moving the mouse */
221 SDL_GetRelativeMouseState(NULL, NULL);
223 sdl_update_caption();
226 static void sdl_grab_end(void)
228 SDL_WM_GrabInput(SDL_GRAB_OFF);
231 sdl_update_caption();
234 static void sdl_send_mouse_event(void)
236 int dx, dy, dz, state, buttons;
237 state = SDL_GetRelativeMouseState(&dx, &dy);
239 if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
240 buttons |= MOUSE_EVENT_LBUTTON;
241 if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
242 buttons |= MOUSE_EVENT_RBUTTON;
243 if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
244 buttons |= MOUSE_EVENT_MBUTTON;
245 /* XXX: test wheel */
247 #ifdef SDL_BUTTON_WHEELUP
248 if (state & SDL_BUTTON(SDL_BUTTON_WHEELUP))
250 if (state & SDL_BUTTON(SDL_BUTTON_WHEELDOWN))
253 kbd_mouse_event(dx, dy, dz, buttons);
256 static void toggle_full_screen(DisplayState *ds)
258 gui_fullscreen = !gui_fullscreen;
259 sdl_resize(ds, screen->w, screen->h);
260 if (gui_fullscreen) {
261 gui_saved_grab = gui_grab;
267 vga_invalidate_display();
268 vga_update_display();
271 static void sdl_refresh(DisplayState *ds)
273 SDL_Event ev1, *ev = &ev1;
276 if (last_vm_running != vm_running) {
277 last_vm_running = vm_running;
278 sdl_update_caption();
281 vga_update_display();
282 while (SDL_PollEvent(ev)) {
284 case SDL_VIDEOEXPOSE:
285 sdl_update(ds, 0, 0, screen->w, screen->h);
289 if (ev->type == SDL_KEYDOWN) {
290 mod_state = (SDL_GetModState() & (KMOD_LSHIFT | KMOD_LCTRL)) ==
291 (KMOD_LSHIFT | KMOD_LCTRL);
292 gui_key_modifier_pressed = mod_state;
293 if (gui_key_modifier_pressed &&
294 ev->key.keysym.sym == SDLK_f) {
295 gui_keysym = ev->key.keysym.sym;
297 } else if (ev->type == SDL_KEYUP) {
298 mod_state = (SDL_GetModState() & (KMOD_LSHIFT | KMOD_LCTRL));
300 if (gui_key_modifier_pressed) {
303 toggle_full_screen(ds);
306 /* exit/enter grab if pressing Ctrl-Shift */
313 gui_key_modifier_pressed = 0;
318 sdl_process_key(&ev->key);
323 case SDL_MOUSEMOTION:
325 sdl_send_mouse_event();
328 case SDL_MOUSEBUTTONDOWN:
329 case SDL_MOUSEBUTTONUP:
331 SDL_MouseButtonEvent *bev = &ev->button;
333 if (ev->type == SDL_MOUSEBUTTONDOWN &&
334 (bev->state & SDL_BUTTON_LMASK)) {
335 /* start grabbing all events */
339 sdl_send_mouse_event();
343 case SDL_ACTIVEEVENT:
344 if (gui_grab && (ev->active.gain & SDL_ACTIVEEVENTMASK) == 0) {
354 static void sdl_cleanup(void)
359 void sdl_display_init(DisplayState *ds)
363 flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
364 if (SDL_Init (flags)) {
365 fprintf(stderr, "Could not initialize SDL - exiting\n");
370 /* NOTE: we still want Ctrl-C to work, so we undo the SDL redirections */
371 signal(SIGINT, SIG_DFL);
372 signal(SIGQUIT, SIG_DFL);
375 ds->dpy_update = sdl_update;
376 ds->dpy_resize = sdl_resize;
377 ds->dpy_refresh = sdl_refresh;
379 sdl_resize(ds, 640, 400);
380 sdl_update_caption();
381 SDL_EnableKeyRepeat(250, 50);