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 */
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)
134 /* XXX: not portable, but avoids complicated mappings */
135 keycode = ev->keysym.scancode;
140 } else if (keycode < 97) {
141 keycode -= 8; /* just an offset */
142 } else if (keycode < 158) {
143 /* use conversion table */
144 keycode = x_keycode_to_pc_keycode[keycode - 97];
150 /* now send the key code */
151 while (keycode != 0) {
153 if (ev->type == SDL_KEYUP)
160 static void sdl_update_caption(void)
165 strcat(buf, " [Stopped]");
168 strcat(buf, " - Press Ctrl-Shift to exit grab");
170 SDL_WM_SetCaption(buf, "QEMU");
173 static void sdl_grab_start(void)
176 SDL_WM_GrabInput(SDL_GRAB_ON);
177 /* dummy read to avoid moving the mouse */
178 SDL_GetRelativeMouseState(NULL, NULL);
180 sdl_update_caption();
183 static void sdl_grab_end(void)
185 SDL_WM_GrabInput(SDL_GRAB_OFF);
188 sdl_update_caption();
191 static void sdl_send_mouse_event(void)
193 int dx, dy, dz, state, buttons;
194 state = SDL_GetRelativeMouseState(&dx, &dy);
196 if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
197 buttons |= MOUSE_EVENT_LBUTTON;
198 if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
199 buttons |= MOUSE_EVENT_RBUTTON;
200 if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
201 buttons |= MOUSE_EVENT_MBUTTON;
202 /* XXX: test wheel */
204 #ifdef SDL_BUTTON_WHEELUP
205 if (state & SDL_BUTTON(SDL_BUTTON_WHEELUP))
207 if (state & SDL_BUTTON(SDL_BUTTON_WHEELDOWN))
210 kbd_mouse_event(dx, dy, dz, buttons);
213 static void toggle_full_screen(DisplayState *ds)
215 gui_fullscreen = !gui_fullscreen;
216 sdl_resize(ds, screen->w, screen->h);
217 if (gui_fullscreen) {
218 gui_saved_grab = gui_grab;
224 vga_update_display();
225 sdl_update(ds, 0, 0, screen->w, screen->h);
228 static void sdl_refresh(DisplayState *ds)
230 SDL_Event ev1, *ev = &ev1;
233 if (last_vm_running != vm_running) {
234 last_vm_running = vm_running;
235 sdl_update_caption();
238 vga_update_display();
239 while (SDL_PollEvent(ev)) {
241 case SDL_VIDEOEXPOSE:
242 sdl_update(ds, 0, 0, screen->w, screen->h);
246 if (ev->type == SDL_KEYDOWN) {
247 mod_state = (SDL_GetModState() & (KMOD_LSHIFT | KMOD_LCTRL)) ==
248 (KMOD_LSHIFT | KMOD_LCTRL);
249 gui_key_modifier_pressed = mod_state;
250 if (gui_key_modifier_pressed &&
251 ev->key.keysym.sym == SDLK_f) {
252 gui_keysym = ev->key.keysym.sym;
254 } else if (ev->type == SDL_KEYUP) {
255 mod_state = (SDL_GetModState() & (KMOD_LSHIFT | KMOD_LCTRL));
257 if (gui_key_modifier_pressed) {
260 toggle_full_screen(ds);
263 /* exit/enter grab if pressing Ctrl-Shift */
270 gui_key_modifier_pressed = 0;
275 sdl_process_key(&ev->key);
280 case SDL_MOUSEMOTION:
282 sdl_send_mouse_event();
285 case SDL_MOUSEBUTTONDOWN:
286 case SDL_MOUSEBUTTONUP:
288 SDL_MouseButtonEvent *bev = &ev->button;
290 if (ev->type == SDL_MOUSEBUTTONDOWN &&
291 (bev->state & SDL_BUTTON_LMASK)) {
292 /* start grabbing all events */
296 sdl_send_mouse_event();
300 case SDL_ACTIVEEVENT:
301 if (gui_grab && (ev->active.gain & SDL_ACTIVEEVENTMASK) == 0) {
311 static void sdl_cleanup(void)
316 void sdl_display_init(DisplayState *ds)
320 flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
321 if (SDL_Init (flags)) {
322 fprintf(stderr, "Could not initialize SDL - exiting\n");
327 /* NOTE: we still want Ctrl-C to work, so we undo the SDL redirections */
328 signal(SIGINT, SIG_DFL);
329 signal(SIGQUIT, SIG_DFL);
332 ds->dpy_update = sdl_update;
333 ds->dpy_resize = sdl_resize;
334 ds->dpy_refresh = sdl_refresh;
336 sdl_resize(ds, 640, 400);
337 sdl_update_caption();
338 SDL_EnableKeyRepeat(250, 50);