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