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