1 /* 2 * QEMU curses/ncurses display driver 3 * 4 * Copyright (c) 2005 Andrzej Zaborowski <balrog (at) zabor.org> 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 <curses.h> 25 26 #ifndef _WIN32 27 #include <signal.h> 28 #include <sys/ioctl.h> 29 #include <termios.h> 30 #endif 31 32 #ifdef __OpenBSD__ 33 #define resize_term resizeterm 34 #endif 35 36 #include "qemu-common.h" 37 #include "ui/console.h" 38 #include "sysemu/sysemu.h" 39 40 #define FONT_HEIGHT 16 41 #define FONT_WIDTH 8 42 43 static console_ch_t screen[160 * 100]; 44 static WINDOW *screenpad = NULL; 45 static int width, height, gwidth, gheight, invalidate; 46 static int px, py, sminx, sminy, smaxx, smaxy; 47 48 static void curses_update(DisplayState *ds, int x, int y, int w, int h) 49 { 50 chtype *line; 51 52 line = ((chtype *) screen) + y * width; 53 for (h += y; y < h; y ++, line += width) 54 mvwaddchnstr(screenpad, y, 0, line, width); 55 56 pnoutrefresh(screenpad, py, px, sminy, sminx, smaxy - 1, smaxx - 1); 57 refresh(); 58 } 59 60 static void curses_calc_pad(void) 61 { 62 if (is_fixedsize_console()) { 63 width = gwidth; 64 height = gheight; 65 } else { 66 width = COLS; 67 height = LINES; 68 } 69 70 if (screenpad) 71 delwin(screenpad); 72 73 clear(); 74 refresh(); 75 76 screenpad = newpad(height, width); 77 78 if (width > COLS) { 79 px = (width - COLS) / 2; 80 sminx = 0; 81 smaxx = COLS; 82 } else { 83 px = 0; 84 sminx = (COLS - width) / 2; 85 smaxx = sminx + width; 86 } 87 88 if (height > LINES) { 89 py = (height - LINES) / 2; 90 sminy = 0; 91 smaxy = LINES; 92 } else { 93 py = 0; 94 sminy = (LINES - height) / 2; 95 smaxy = sminy + height; 96 } 97 } 98 99 static void curses_resize(DisplayState *ds) 100 { 101 if (ds_get_width(ds) == gwidth && ds_get_height(ds) == gheight) 102 return; 103 104 gwidth = ds_get_width(ds); 105 gheight = ds_get_height(ds); 106 107 curses_calc_pad(); 108 ds->surface->width = width * FONT_WIDTH; 109 ds->surface->height = height * FONT_HEIGHT; 110 } 111 112 #ifndef _WIN32 113 #if defined(SIGWINCH) && defined(KEY_RESIZE) 114 static void curses_winch_handler(int signum) 115 { 116 struct winsize { 117 unsigned short ws_row; 118 unsigned short ws_col; 119 unsigned short ws_xpixel; /* unused */ 120 unsigned short ws_ypixel; /* unused */ 121 } ws; 122 123 /* terminal size changed */ 124 if (ioctl(1, TIOCGWINSZ, &ws) == -1) 125 return; 126 127 resize_term(ws.ws_row, ws.ws_col); 128 curses_calc_pad(); 129 invalidate = 1; 130 131 /* some systems require this */ 132 signal(SIGWINCH, curses_winch_handler); 133 } 134 #endif 135 #endif 136 137 static void curses_cursor_position(DisplayState *ds, int x, int y) 138 { 139 if (x >= 0) { 140 x = sminx + x - px; 141 y = sminy + y - py; 142 143 if (x >= 0 && y >= 0 && x < COLS && y < LINES) { 144 move(y, x); 145 curs_set(1); 146 /* it seems that curs_set(1) must always be called before 147 * curs_set(2) for the latter to have effect */ 148 if (!is_graphic_console()) 149 curs_set(2); 150 return; 151 } 152 } 153 154 curs_set(0); 155 } 156 157 /* generic keyboard conversion */ 158 159 #include "curses_keys.h" 160 161 static kbd_layout_t *kbd_layout = NULL; 162 static int keycode2keysym[CURSES_KEYS]; 163 164 static void curses_refresh(DisplayState *ds) 165 { 166 int chr, nextchr, keysym, keycode; 167 168 if (invalidate) { 169 clear(); 170 refresh(); 171 curses_calc_pad(); 172 ds->surface->width = FONT_WIDTH * width; 173 ds->surface->height = FONT_HEIGHT * height; 174 vga_hw_invalidate(); 175 invalidate = 0; 176 } 177 178 vga_hw_text_update(screen); 179 180 nextchr = ERR; 181 while (1) { 182 /* while there are any pending key strokes to process */ 183 if (nextchr == ERR) 184 chr = getch(); 185 else { 186 chr = nextchr; 187 nextchr = ERR; 188 } 189 190 if (chr == ERR) 191 break; 192 193 #ifdef KEY_RESIZE 194 /* this shouldn't occur when we use a custom SIGWINCH handler */ 195 if (chr == KEY_RESIZE) { 196 clear(); 197 refresh(); 198 curses_calc_pad(); 199 curses_update(ds, 0, 0, width, height); 200 ds->surface->width = FONT_WIDTH * width; 201 ds->surface->height = FONT_HEIGHT * height; 202 continue; 203 } 204 #endif 205 206 keycode = curses2keycode[chr]; 207 if (keycode == -1) 208 continue; 209 210 /* alt key */ 211 if (keycode == 1) { 212 nextchr = getch(); 213 214 if (nextchr != ERR) { 215 keycode = curses2keycode[nextchr]; 216 nextchr = ERR; 217 if (keycode == -1) 218 continue; 219 220 keycode |= ALT; 221 222 /* process keys reserved for qemu */ 223 if (keycode >= QEMU_KEY_CONSOLE0 && 224 keycode < QEMU_KEY_CONSOLE0 + 9) { 225 erase(); 226 wnoutrefresh(stdscr); 227 console_select(keycode - QEMU_KEY_CONSOLE0); 228 229 invalidate = 1; 230 continue; 231 } 232 } 233 } 234 235 if (kbd_layout && !(keycode & GREY)) { 236 keysym = keycode2keysym[keycode & KEY_MASK]; 237 if (keysym == -1) 238 keysym = chr; 239 240 keycode &= ~KEY_MASK; 241 keycode |= keysym2scancode(kbd_layout, keysym); 242 } 243 244 if (is_graphic_console()) { 245 /* since terminals don't know about key press and release 246 * events, we need to emit both for each key received */ 247 if (keycode & SHIFT) 248 kbd_put_keycode(SHIFT_CODE); 249 if (keycode & CNTRL) 250 kbd_put_keycode(CNTRL_CODE); 251 if (keycode & ALT) 252 kbd_put_keycode(ALT_CODE); 253 if (keycode & GREY) 254 kbd_put_keycode(GREY_CODE); 255 kbd_put_keycode(keycode & KEY_MASK); 256 if (keycode & GREY) 257 kbd_put_keycode(GREY_CODE); 258 kbd_put_keycode((keycode & KEY_MASK) | KEY_RELEASE); 259 if (keycode & ALT) 260 kbd_put_keycode(ALT_CODE | KEY_RELEASE); 261 if (keycode & CNTRL) 262 kbd_put_keycode(CNTRL_CODE | KEY_RELEASE); 263 if (keycode & SHIFT) 264 kbd_put_keycode(SHIFT_CODE | KEY_RELEASE); 265 } else { 266 keysym = curses2keysym[chr]; 267 if (keysym == -1) 268 keysym = chr; 269 270 kbd_put_keysym(keysym); 271 } 272 } 273 } 274 275 static void curses_cleanup(void *opaque) 276 { 277 endwin(); 278 } 279 280 static void curses_atexit(void) 281 { 282 curses_cleanup(NULL); 283 } 284 285 static void curses_setup(void) 286 { 287 int i, colour_default[8] = { 288 COLOR_BLACK, COLOR_BLUE, COLOR_GREEN, COLOR_CYAN, 289 COLOR_RED, COLOR_MAGENTA, COLOR_YELLOW, COLOR_WHITE, 290 }; 291 292 /* input as raw as possible, let everything be interpreted 293 * by the guest system */ 294 initscr(); noecho(); intrflush(stdscr, FALSE); 295 nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE); 296 start_color(); raw(); scrollok(stdscr, FALSE); 297 298 for (i = 0; i < 64; i ++) 299 init_pair(i, colour_default[i & 7], colour_default[i >> 3]); 300 } 301 302 static void curses_keyboard_setup(void) 303 { 304 int i, keycode, keysym; 305 306 #if defined(__APPLE__) 307 /* always use generic keymaps */ 308 if (!keyboard_layout) 309 keyboard_layout = "en-us"; 310 #endif 311 if(keyboard_layout) { 312 kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout); 313 if (!kbd_layout) 314 exit(1); 315 } 316 317 for (i = 0; i < CURSES_KEYS; i ++) 318 keycode2keysym[i] = -1; 319 320 for (i = 0; i < CURSES_KEYS; i ++) { 321 if (curses2keycode[i] == -1) 322 continue; 323 324 keycode = curses2keycode[i] & KEY_MASK; 325 if (keycode2keysym[keycode] >= 0) 326 continue; 327 328 for (keysym = 0; keysym < CURSES_KEYS; keysym ++) 329 if (curses2keycode[keysym] == keycode) { 330 keycode2keysym[keycode] = keysym; 331 break; 332 } 333 334 if (keysym >= CURSES_KEYS) 335 keycode2keysym[keycode] = i; 336 } 337 } 338 339 void curses_display_init(DisplayState *ds, int full_screen) 340 { 341 DisplayChangeListener *dcl; 342 #ifndef _WIN32 343 if (!isatty(1)) { 344 fprintf(stderr, "We need a terminal output\n"); 345 exit(1); 346 } 347 #endif 348 349 curses_setup(); 350 curses_keyboard_setup(); 351 atexit(curses_atexit); 352 353 #ifndef _WIN32 354 #if defined(SIGWINCH) && defined(KEY_RESIZE) 355 /* some curses implementations provide a handler, but we 356 * want to be sure this is handled regardless of the library */ 357 signal(SIGWINCH, curses_winch_handler); 358 #endif 359 #endif 360 361 dcl = (DisplayChangeListener *) g_malloc0(sizeof(DisplayChangeListener)); 362 dcl->dpy_update = curses_update; 363 dcl->dpy_resize = curses_resize; 364 dcl->dpy_refresh = curses_refresh; 365 dcl->dpy_text_cursor = curses_cursor_position; 366 register_displaychangelistener(ds, dcl); 367 qemu_free_displaysurface(ds); 368 ds->surface = qemu_create_displaysurface_from(640, 400, 0, 0, (uint8_t*) screen); 369 370 invalidate = 1; 371 } 372