1 /* 2 * QEMU curses/ncurses display driver 3 * 4 * Copyright (c) 2005 Andrzej Zaborowski <balrog@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 "qemu/osdep.h" 25 26 #ifndef _WIN32 27 #include <sys/ioctl.h> 28 #include <termios.h> 29 #endif 30 31 #include "qapi/error.h" 32 #include "qemu-common.h" 33 #include "ui/console.h" 34 #include "ui/input.h" 35 #include "sysemu/sysemu.h" 36 37 /* KEY_EVENT is defined in wincon.h and in curses.h. Avoid redefinition. */ 38 #undef KEY_EVENT 39 #include <curses.h> 40 #undef KEY_EVENT 41 42 #define FONT_HEIGHT 16 43 #define FONT_WIDTH 8 44 45 static DisplayChangeListener *dcl; 46 static console_ch_t screen[160 * 100]; 47 static WINDOW *screenpad = NULL; 48 static int width, height, gwidth, gheight, invalidate; 49 static int px, py, sminx, sminy, smaxx, smaxy; 50 51 static chtype vga_to_curses[256]; 52 53 static void curses_update(DisplayChangeListener *dcl, 54 int x, int y, int w, int h) 55 { 56 console_ch_t *line; 57 chtype curses_line[width]; 58 59 line = screen + y * width; 60 for (h += y; y < h; y ++, line += width) { 61 for (x = 0; x < width; x++) { 62 chtype ch = line[x] & 0xff; 63 chtype at = line[x] & ~0xff; 64 if (vga_to_curses[ch]) { 65 ch = vga_to_curses[ch]; 66 } 67 curses_line[x] = ch | at; 68 } 69 mvwaddchnstr(screenpad, y, 0, curses_line, width); 70 } 71 72 pnoutrefresh(screenpad, py, px, sminy, sminx, smaxy - 1, smaxx - 1); 73 refresh(); 74 } 75 76 static void curses_calc_pad(void) 77 { 78 if (qemu_console_is_fixedsize(NULL)) { 79 width = gwidth; 80 height = gheight; 81 } else { 82 width = COLS; 83 height = LINES; 84 } 85 86 if (screenpad) 87 delwin(screenpad); 88 89 clear(); 90 refresh(); 91 92 screenpad = newpad(height, width); 93 94 if (width > COLS) { 95 px = (width - COLS) / 2; 96 sminx = 0; 97 smaxx = COLS; 98 } else { 99 px = 0; 100 sminx = (COLS - width) / 2; 101 smaxx = sminx + width; 102 } 103 104 if (height > LINES) { 105 py = (height - LINES) / 2; 106 sminy = 0; 107 smaxy = LINES; 108 } else { 109 py = 0; 110 sminy = (LINES - height) / 2; 111 smaxy = sminy + height; 112 } 113 } 114 115 static void curses_resize(DisplayChangeListener *dcl, 116 int width, int height) 117 { 118 if (width == gwidth && height == gheight) { 119 return; 120 } 121 122 gwidth = width; 123 gheight = height; 124 125 curses_calc_pad(); 126 } 127 128 #if !defined(_WIN32) && defined(SIGWINCH) && defined(KEY_RESIZE) 129 static volatile sig_atomic_t got_sigwinch; 130 static void curses_winch_check(void) 131 { 132 struct winsize { 133 unsigned short ws_row; 134 unsigned short ws_col; 135 unsigned short ws_xpixel; /* unused */ 136 unsigned short ws_ypixel; /* unused */ 137 } ws; 138 139 if (!got_sigwinch) { 140 return; 141 } 142 got_sigwinch = false; 143 144 if (ioctl(1, TIOCGWINSZ, &ws) == -1) { 145 return; 146 } 147 148 resize_term(ws.ws_row, ws.ws_col); 149 invalidate = 1; 150 } 151 152 static void curses_winch_handler(int signum) 153 { 154 got_sigwinch = true; 155 } 156 157 static void curses_winch_init(void) 158 { 159 struct sigaction old, winch = { 160 .sa_handler = curses_winch_handler, 161 }; 162 sigaction(SIGWINCH, &winch, &old); 163 } 164 #else 165 static void curses_winch_check(void) {} 166 static void curses_winch_init(void) {} 167 #endif 168 169 static void curses_cursor_position(DisplayChangeListener *dcl, 170 int x, int y) 171 { 172 if (x >= 0) { 173 x = sminx + x - px; 174 y = sminy + y - py; 175 176 if (x >= 0 && y >= 0 && x < COLS && y < LINES) { 177 move(y, x); 178 curs_set(1); 179 /* it seems that curs_set(1) must always be called before 180 * curs_set(2) for the latter to have effect */ 181 if (!qemu_console_is_graphic(NULL)) { 182 curs_set(2); 183 } 184 return; 185 } 186 } 187 188 curs_set(0); 189 } 190 191 /* generic keyboard conversion */ 192 193 #include "curses_keys.h" 194 195 static kbd_layout_t *kbd_layout = NULL; 196 197 static void curses_refresh(DisplayChangeListener *dcl) 198 { 199 int chr, keysym, keycode, keycode_alt; 200 201 curses_winch_check(); 202 203 if (invalidate) { 204 clear(); 205 refresh(); 206 curses_calc_pad(); 207 graphic_hw_invalidate(NULL); 208 invalidate = 0; 209 } 210 211 graphic_hw_text_update(NULL, screen); 212 213 while (1) { 214 /* while there are any pending key strokes to process */ 215 chr = getch(); 216 217 if (chr == ERR) 218 break; 219 220 #ifdef KEY_RESIZE 221 /* this shouldn't occur when we use a custom SIGWINCH handler */ 222 if (chr == KEY_RESIZE) { 223 clear(); 224 refresh(); 225 curses_calc_pad(); 226 curses_update(dcl, 0, 0, width, height); 227 continue; 228 } 229 #endif 230 231 keycode = curses2keycode[chr]; 232 keycode_alt = 0; 233 234 /* alt key */ 235 if (keycode == 1) { 236 int nextchr = getch(); 237 238 if (nextchr != ERR) { 239 chr = nextchr; 240 keycode_alt = ALT; 241 keycode = curses2keycode[chr]; 242 243 if (keycode != -1) { 244 keycode |= ALT; 245 246 /* process keys reserved for qemu */ 247 if (keycode >= QEMU_KEY_CONSOLE0 && 248 keycode < QEMU_KEY_CONSOLE0 + 9) { 249 erase(); 250 wnoutrefresh(stdscr); 251 console_select(keycode - QEMU_KEY_CONSOLE0); 252 253 invalidate = 1; 254 continue; 255 } 256 } 257 } 258 } 259 260 if (kbd_layout) { 261 keysym = -1; 262 if (chr < CURSES_KEYS) 263 keysym = curses2keysym[chr]; 264 265 if (keysym == -1) { 266 if (chr < ' ') { 267 keysym = chr + '@'; 268 if (keysym >= 'A' && keysym <= 'Z') 269 keysym += 'a' - 'A'; 270 keysym |= KEYSYM_CNTRL; 271 } else 272 keysym = chr; 273 } 274 275 keycode = keysym2scancode(kbd_layout, keysym & KEYSYM_MASK, 276 false, false, false); 277 if (keycode == 0) 278 continue; 279 280 keycode |= (keysym & ~KEYSYM_MASK) >> 16; 281 keycode |= keycode_alt; 282 } 283 284 if (keycode == -1) 285 continue; 286 287 if (qemu_console_is_graphic(NULL)) { 288 /* since terminals don't know about key press and release 289 * events, we need to emit both for each key received */ 290 if (keycode & SHIFT) { 291 qemu_input_event_send_key_number(NULL, SHIFT_CODE, true); 292 qemu_input_event_send_key_delay(0); 293 } 294 if (keycode & CNTRL) { 295 qemu_input_event_send_key_number(NULL, CNTRL_CODE, true); 296 qemu_input_event_send_key_delay(0); 297 } 298 if (keycode & ALT) { 299 qemu_input_event_send_key_number(NULL, ALT_CODE, true); 300 qemu_input_event_send_key_delay(0); 301 } 302 if (keycode & ALTGR) { 303 qemu_input_event_send_key_number(NULL, GREY | ALT_CODE, true); 304 qemu_input_event_send_key_delay(0); 305 } 306 307 qemu_input_event_send_key_number(NULL, keycode & KEY_MASK, true); 308 qemu_input_event_send_key_delay(0); 309 qemu_input_event_send_key_number(NULL, keycode & KEY_MASK, false); 310 qemu_input_event_send_key_delay(0); 311 312 if (keycode & ALTGR) { 313 qemu_input_event_send_key_number(NULL, GREY | ALT_CODE, false); 314 qemu_input_event_send_key_delay(0); 315 } 316 if (keycode & ALT) { 317 qemu_input_event_send_key_number(NULL, ALT_CODE, false); 318 qemu_input_event_send_key_delay(0); 319 } 320 if (keycode & CNTRL) { 321 qemu_input_event_send_key_number(NULL, CNTRL_CODE, false); 322 qemu_input_event_send_key_delay(0); 323 } 324 if (keycode & SHIFT) { 325 qemu_input_event_send_key_number(NULL, SHIFT_CODE, false); 326 qemu_input_event_send_key_delay(0); 327 } 328 } else { 329 keysym = -1; 330 if (chr < CURSES_KEYS) { 331 keysym = curses2qemu[chr]; 332 } 333 if (keysym == -1) 334 keysym = chr; 335 336 kbd_put_keysym(keysym); 337 } 338 } 339 } 340 341 static void curses_atexit(void) 342 { 343 endwin(); 344 } 345 346 static void curses_setup(void) 347 { 348 int i, colour_default[8] = { 349 [QEMU_COLOR_BLACK] = COLOR_BLACK, 350 [QEMU_COLOR_BLUE] = COLOR_BLUE, 351 [QEMU_COLOR_GREEN] = COLOR_GREEN, 352 [QEMU_COLOR_CYAN] = COLOR_CYAN, 353 [QEMU_COLOR_RED] = COLOR_RED, 354 [QEMU_COLOR_MAGENTA] = COLOR_MAGENTA, 355 [QEMU_COLOR_YELLOW] = COLOR_YELLOW, 356 [QEMU_COLOR_WHITE] = COLOR_WHITE, 357 }; 358 359 /* input as raw as possible, let everything be interpreted 360 * by the guest system */ 361 initscr(); noecho(); intrflush(stdscr, FALSE); 362 nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE); 363 start_color(); raw(); scrollok(stdscr, FALSE); 364 365 /* Make color pair to match color format (3bits bg:3bits fg) */ 366 for (i = 0; i < 64; i++) { 367 init_pair(i, colour_default[i & 7], colour_default[i >> 3]); 368 } 369 /* Set default color for more than 64 for safety. */ 370 for (i = 64; i < COLOR_PAIRS; i++) { 371 init_pair(i, COLOR_WHITE, COLOR_BLACK); 372 } 373 374 /* 375 * Setup mapping for vga to curses line graphics. 376 * FIXME: for better font, have to use ncursesw and setlocale() 377 */ 378 #if 0 379 /* FIXME: map from where? */ 380 ACS_S1; 381 ACS_S3; 382 ACS_S7; 383 ACS_S9; 384 #endif 385 /* ACS_* is not constant. So, we can't initialize statically. */ 386 vga_to_curses['\0'] = ' '; 387 vga_to_curses[0x04] = ACS_DIAMOND; 388 vga_to_curses[0x18] = ACS_UARROW; 389 vga_to_curses[0x19] = ACS_DARROW; 390 vga_to_curses[0x1a] = ACS_RARROW; 391 vga_to_curses[0x1b] = ACS_LARROW; 392 vga_to_curses[0x9c] = ACS_STERLING; 393 vga_to_curses[0xb0] = ACS_BOARD; 394 vga_to_curses[0xb1] = ACS_CKBOARD; 395 vga_to_curses[0xb3] = ACS_VLINE; 396 vga_to_curses[0xb4] = ACS_RTEE; 397 vga_to_curses[0xbf] = ACS_URCORNER; 398 vga_to_curses[0xc0] = ACS_LLCORNER; 399 vga_to_curses[0xc1] = ACS_BTEE; 400 vga_to_curses[0xc2] = ACS_TTEE; 401 vga_to_curses[0xc3] = ACS_LTEE; 402 vga_to_curses[0xc4] = ACS_HLINE; 403 vga_to_curses[0xc5] = ACS_PLUS; 404 vga_to_curses[0xce] = ACS_LANTERN; 405 vga_to_curses[0xd8] = ACS_NEQUAL; 406 vga_to_curses[0xd9] = ACS_LRCORNER; 407 vga_to_curses[0xda] = ACS_ULCORNER; 408 vga_to_curses[0xdb] = ACS_BLOCK; 409 vga_to_curses[0xe3] = ACS_PI; 410 vga_to_curses[0xf1] = ACS_PLMINUS; 411 vga_to_curses[0xf2] = ACS_GEQUAL; 412 vga_to_curses[0xf3] = ACS_LEQUAL; 413 vga_to_curses[0xf8] = ACS_DEGREE; 414 vga_to_curses[0xfe] = ACS_BULLET; 415 } 416 417 static void curses_keyboard_setup(void) 418 { 419 #if defined(__APPLE__) 420 /* always use generic keymaps */ 421 if (!keyboard_layout) 422 keyboard_layout = "en-us"; 423 #endif 424 if(keyboard_layout) { 425 kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout, 426 &error_fatal); 427 } 428 } 429 430 static const DisplayChangeListenerOps dcl_ops = { 431 .dpy_name = "curses", 432 .dpy_text_update = curses_update, 433 .dpy_text_resize = curses_resize, 434 .dpy_refresh = curses_refresh, 435 .dpy_text_cursor = curses_cursor_position, 436 }; 437 438 static void curses_display_init(DisplayState *ds, DisplayOptions *opts) 439 { 440 #ifndef _WIN32 441 if (!isatty(1)) { 442 fprintf(stderr, "We need a terminal output\n"); 443 exit(1); 444 } 445 #endif 446 447 curses_setup(); 448 curses_keyboard_setup(); 449 atexit(curses_atexit); 450 451 curses_winch_init(); 452 453 dcl = g_new0(DisplayChangeListener, 1); 454 dcl->ops = &dcl_ops; 455 register_displaychangelistener(dcl); 456 457 invalidate = 1; 458 } 459 460 static QemuDisplay qemu_display_curses = { 461 .type = DISPLAY_TYPE_CURSES, 462 .init = curses_display_init, 463 }; 464 465 static void register_curses(void) 466 { 467 qemu_display_register(&qemu_display_curses); 468 } 469 470 type_init(register_curses); 471