sdl.c

   1 /*
   2  * QEMU SDL display driver
   3  *
   4  * Copyright (c) 2003 Fabrice Bellard
   5  *
   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:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  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
  22  * THE SOFTWARE.
  23  */
  24 #include <stdlib.h>
  25 #include <stdio.h>
  26 #include <stdarg.h>
  27 #include <string.h>
  28 #include <getopt.h>
  29 #include <inttypes.h>
  30 #include <unistd.h>
  31 #include <sys/mman.h>
  32 #include <fcntl.h>
  33 #include <signal.h>
  34 #include <time.h>
  35 #include <sys/time.h>
  36 #include <malloc.h>
  37 #include <termios.h>
  38 #include <sys/poll.h>
  39 #include <errno.h>
  40 #include <sys/wait.h>
  41 #include <netinet/in.h>
  42
  43 #include <SDL.h>
  44
  45 #include "cpu.h"
  46 #include "exec-all.h"
  47
  48 #include "vl.h"
  49
  50 static SDL_Surface *screen;
  51 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  52
  53 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
  54 {
  55     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  56     SDL_UpdateRect(screen, x, y, w, h);
  57 }
  58
  59 static void sdl_resize(DisplayState *ds, int w, int h)
  60 {
  61     int flags;
  62
  63     //    printf("resizing to %d %d\n", w, h);
  64
  65     flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
  66     flags |= SDL_RESIZABLE;
  67     screen = SDL_SetVideoMode(w, h, 0, flags);
  68     if (!screen) {
  69         fprintf(stderr, "Could not open SDL display\n");
  70         exit(1);
  71     }
  72     ds->data = screen->pixels;
  73     ds->linesize = screen->pitch;
  74     ds->depth = screen->format->BitsPerPixel;
  75 }
  76
  77 static const uint32_t x_keycode_to_pc_keycode[61] = {
  78    0x47e0,      /*  97  Home   */
  79    0x48e0,      /*  98  Up     */
  80    0x49e0,      /*  99  PgUp   */
  81    0x4be0,      /* 100  Left   */
  82    0x4c,        /* 101  KP-5   */
  83    0x4de0,      /* 102  Right  */
  84    0x4fe0,      /* 103  End    */
  85    0x50e0,      /* 104  Down   */
  86    0x51e0,      /* 105  PgDn   */
  87    0x52e0,      /* 106  Ins    */
  88    0x53e0,      /* 107  Del    */
  89    0x1ce0,      /* 108  Enter  */
  90    0x1de0,      /* 109  Ctrl-R */
  91    0x451de1,    /* 110  Pause  */
  92    0x37e0,      /* 111  Print  */
  93    0x35e0,      /* 112  Divide */
  94    0x38e0,      /* 113  Alt-R  */
  95    0x46e0,      /* 114  Break  */
  96    0x0,         /* 115 */
  97    0x0,         /* 116 */
  98    0x0,         /* 117 */
  99    0x0,         /* 118 */
 100    0x0,         /* 119 */
 101    0x0,         /* 120 */
 102    0x0,         /* 121 */
 103    0x0,         /* 122 */
 104    0x0,         /* 123 */
 105    0x0,         /* 124 */
 106    0x0,         /* 125 */
 107    0x0,         /* 126 */
 108    0x0,         /* 127 */
 109    0x0,         /* 128 */
 110    0x0,         /* 129 */
 111    0x0,         /* 130 */
 112    0x0,         /* 131 */
 113    0x0,         /* 132 */
 114    0x0,         /* 133 */
 115    0x0,         /* 134 */
 116    0x0,         /* 135 */
 117    0x47,         /* 136 KP_7 */
 118    0x48,         /* 137 KP_8 */
 119    0x49,         /* 138 KP_9 */
 120    0x4b,         /* 139 KP_4 */
 121    0x4c,         /* 140 KP_5 */
 122    0x4d,         /* 141 KP_6 */
 123    0x4f,         /* 142 KP_1 */
 124    0x50,         /* 143 KP_2 */
 125    0x51,         /* 144 KP_3 */
 126    0x52,         /* 145 KP_0 */
 127    0x53,         /* 146 KP_. */
 128    0x47,         /* 147 KP_HOME */
 129    0x48,         /* 148 KP_UP */
 130    0x49,         /* 149 KP_PgUp */
 131    0x4b,         /* 150 KP_Left */
 132    0x4c,         /* 151 KP_ */
 133    0x4d,         /* 152 KP_Right */
 134    0x4f,         /* 153 KP_End */
 135    0x50,         /* 154 KP_Down */
 136    0x51,         /* 155 KP_PgDn */
 137    0x52,         /* 156 KP_Ins */
 138    0x53,         /* 157 KP_Del */
 139 };
 140
 141 static void sdl_process_key(SDL_KeyboardEvent *ev)
 142 {
 143     int keycode, v;
 144
 145     /* XXX: not portable, but avoids complicated mappings */
 146     keycode = ev->keysym.scancode;
 147     if (keycode < 9) {
 148         keycode = 0;
 149     } else if (keycode < 97) {
 150         keycode -= 8; /* just an offset */
 151     } else if (keycode < 158) {
 152         /* use conversion table */
 153         keycode = x_keycode_to_pc_keycode[keycode - 97];
 154     } else {
 155         keycode = 0;
 156     }
 157
 158     /* now send the key code */
 159     while (keycode != 0) {
 160         v = keycode & 0xff;
 161         if (ev->type == SDL_KEYUP)
 162             v |= 0x80;
 163         kbd_put_keycode(v);
 164         keycode >>= 8;
 165     }
 166 }
 167
 168 static void sdl_grab_start(void)
 169 {
 170     SDL_WM_SetCaption("QEMU - Press Ctrl-Shift to exit grab", "QEMU");
 171     SDL_ShowCursor(0);
 172     SDL_WM_GrabInput(SDL_GRAB_ON);
 173     /* dummy read to avoid moving the mouse */
 174     SDL_GetRelativeMouseState(NULL, NULL);
 175     gui_grab = 1;
 176 }
 177
 178 static void sdl_grab_end(void)
 179 {
 180     SDL_WM_SetCaption("QEMU", "QEMU");
 181     SDL_WM_GrabInput(SDL_GRAB_OFF);
 182     SDL_ShowCursor(1);
 183     gui_grab = 0;
 184 }
 185
 186 static void sdl_send_mouse_event(void)
 187 {
 188     int dx, dy, dz, state, buttons;
 189     state = SDL_GetRelativeMouseState(&dx, &dy);
 190     buttons = 0;
 191     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 192         buttons |= MOUSE_EVENT_LBUTTON;
 193     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 194         buttons |= MOUSE_EVENT_RBUTTON;
 195     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 196         buttons |= MOUSE_EVENT_MBUTTON;
 197     /* XXX: test wheel */
 198     dz = 0;
 199 #ifdef SDL_BUTTON_WHEELUP
 200     if (state & SDL_BUTTON(SDL_BUTTON_WHEELUP))
 201         dz--;
 202     if (state & SDL_BUTTON(SDL_BUTTON_WHEELDOWN))
 203         dz++;
 204 #endif
 205     kbd_mouse_event(dx, dy, dz, buttons);
 206 }
 207
 208 static void sdl_refresh(DisplayState *ds)
 209 {
 210     SDL_Event ev1, *ev = &ev1;
 211
 212     vga_update_display();
 213     while (SDL_PollEvent(ev)) {
 214         switch (ev->type) {
 215         case SDL_VIDEOEXPOSE:
 216             sdl_update(ds, 0, 0, screen->w, screen->h);
 217             break;
 218         case SDL_KEYDOWN:
 219         case SDL_KEYUP:
 220             if (ev->type == SDL_KEYDOWN) {
 221                 if ((SDL_GetModState() & (KMOD_LSHIFT | KMOD_LCTRL)) ==
 222                     (KMOD_LSHIFT | KMOD_LCTRL)) {
 223                     /* exit/enter grab if pressing Ctrl-Shift */
 224                     if (!gui_grab)
 225                         sdl_grab_start();
 226                     else
 227                         sdl_grab_end();
 228                 }
 229             }
 230             sdl_process_key(&ev->key);
 231             break;
 232         case SDL_QUIT:
 233             reset_requested = 1;
 234             break;
 235         case SDL_MOUSEMOTION:
 236             if (gui_grab) {
 237                 sdl_send_mouse_event();
 238             }
 239             break;
 240         case SDL_MOUSEBUTTONDOWN:
 241         case SDL_MOUSEBUTTONUP:
 242             {
 243                 SDL_MouseButtonEvent *bev = &ev->button;
 244                 if (!gui_grab) {
 245                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 246                         (bev->state & SDL_BUTTON_LMASK)) {
 247                         /* start grabbing all events */
 248                         sdl_grab_start();
 249                     }
 250                 } else {
 251                     sdl_send_mouse_event();
 252                 }
 253             }
 254             break;
 255         default:
 256             break;
 257         }
 258     }
 259 }
 260
 261 static void sdl_cleanup(void)
 262 {
 263     SDL_Quit();
 264 }
 265
 266 void sdl_display_init(DisplayState *ds)
 267 {
 268     int flags;
 269
 270     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 271     if (SDL_Init (flags)) {
 272         fprintf(stderr, "Could not initialize SDL - exiting\n");
 273         exit(1);
 274     }
 275     /* NOTE: we still want Ctrl-C to work, so we undo the SDL redirections */
 276     signal(SIGINT, SIG_DFL);
 277     signal(SIGQUIT, SIG_DFL);
 278
 279     ds->dpy_update = sdl_update;
 280     ds->dpy_resize = sdl_resize;
 281     ds->dpy_refresh = sdl_refresh;
 282
 283     sdl_resize(ds, 640, 400);
 284     SDL_WM_SetCaption("QEMU", "QEMU");
 285     SDL_EnableKeyRepeat(250, 50);
 286     gui_grab = 0;
 287
 288     atexit(sdl_cleanup);
 289 }