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, nextchr, 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 nextchr = ERR; 199 while (1) { 200 /* while there are any pending key strokes to process */ 201 if (nextchr == ERR) 202 chr = getch(); 203 else { 204 chr = nextchr; 205 nextchr = ERR; 206 } 207 208 if (chr == ERR) 209 break; 210 211 #ifdef KEY_RESIZE 212 /* this shouldn't occur when we use a custom SIGWINCH handler */ 213 if (chr == KEY_RESIZE) { 214 clear(); 215 refresh(); 216 curses_calc_pad(); 217 curses_update(dcl, 0, 0, width, height); 218 continue; 219 } 220 #endif 221 222 keycode = curses2keycode[chr]; 223 keycode_alt = 0; 224 225 /* alt key */ 226 if (keycode == 1) { 227 nextchr = getch(); 228 229 if (nextchr != ERR) { 230 chr = nextchr; 231 keycode_alt = ALT; 232 keycode = curses2keycode[nextchr]; 233 nextchr = ERR; 234 235 if (keycode != -1) { 236 keycode |= ALT; 237 238 /* process keys reserved for qemu */ 239 if (keycode >= QEMU_KEY_CONSOLE0 && 240 keycode < QEMU_KEY_CONSOLE0 + 9) { 241 erase(); 242 wnoutrefresh(stdscr); 243 console_select(keycode - QEMU_KEY_CONSOLE0); 244 245 invalidate = 1; 246 continue; 247 } 248 } 249 } 250 } 251 252 if (kbd_layout) { 253 keysym = -1; 254 if (chr < CURSES_KEYS) 255 keysym = curses2keysym[chr]; 256 257 if (keysym == -1) { 258 if (chr < ' ') { 259 keysym = chr + '@'; 260 if (keysym >= 'A' && keysym <= 'Z') 261 keysym += 'a' - 'A'; 262 keysym |= KEYSYM_CNTRL; 263 } else 264 keysym = chr; 265 } 266 267 keycode = keysym2scancode(kbd_layout, keysym & KEYSYM_MASK); 268 if (keycode == 0) 269 continue; 270 271 keycode |= (keysym & ~KEYSYM_MASK) >> 16; 272 keycode |= keycode_alt; 273 } 274 275 if (keycode == -1) 276 continue; 277 278 if (qemu_console_is_graphic(NULL)) { 279 /* since terminals don't know about key press and release 280 * events, we need to emit both for each key received */ 281 if (keycode & SHIFT) { 282 qemu_input_event_send_key_number(NULL, SHIFT_CODE, true); 283 qemu_input_event_send_key_delay(0); 284 } 285 if (keycode & CNTRL) { 286 qemu_input_event_send_key_number(NULL, CNTRL_CODE, true); 287 qemu_input_event_send_key_delay(0); 288 } 289 if (keycode & ALT) { 290 qemu_input_event_send_key_number(NULL, ALT_CODE, true); 291 qemu_input_event_send_key_delay(0); 292 } 293 if (keycode & ALTGR) { 294 qemu_input_event_send_key_number(NULL, GREY | ALT_CODE, true); 295 qemu_input_event_send_key_delay(0); 296 } 297 298 qemu_input_event_send_key_number(NULL, keycode & KEY_MASK, true); 299 qemu_input_event_send_key_delay(0); 300 qemu_input_event_send_key_number(NULL, keycode & KEY_MASK, false); 301 qemu_input_event_send_key_delay(0); 302 303 if (keycode & ALTGR) { 304 qemu_input_event_send_key_number(NULL, GREY | ALT_CODE, false); 305 qemu_input_event_send_key_delay(0); 306 } 307 if (keycode & ALT) { 308 qemu_input_event_send_key_number(NULL, ALT_CODE, false); 309 qemu_input_event_send_key_delay(0); 310 } 311 if (keycode & CNTRL) { 312 qemu_input_event_send_key_number(NULL, CNTRL_CODE, false); 313 qemu_input_event_send_key_delay(0); 314 } 315 if (keycode & SHIFT) { 316 qemu_input_event_send_key_number(NULL, SHIFT_CODE, false); 317 qemu_input_event_send_key_delay(0); 318 } 319 } else { 320 keysym = curses2qemu[chr]; 321 if (keysym == -1) 322 keysym = chr; 323 324 kbd_put_keysym(keysym); 325 } 326 } 327 } 328 329 static void curses_atexit(void) 330 { 331 endwin(); 332 } 333 334 static void curses_setup(void) 335 { 336 int i, colour_default[8] = { 337 [QEMU_COLOR_BLACK] = COLOR_BLACK, 338 [QEMU_COLOR_BLUE] = COLOR_BLUE, 339 [QEMU_COLOR_GREEN] = COLOR_GREEN, 340 [QEMU_COLOR_CYAN] = COLOR_CYAN, 341 [QEMU_COLOR_RED] = COLOR_RED, 342 [QEMU_COLOR_MAGENTA] = COLOR_MAGENTA, 343 [QEMU_COLOR_YELLOW] = COLOR_YELLOW, 344 [QEMU_COLOR_WHITE] = COLOR_WHITE, 345 }; 346 347 /* input as raw as possible, let everything be interpreted 348 * by the guest system */ 349 initscr(); noecho(); intrflush(stdscr, FALSE); 350 nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE); 351 start_color(); raw(); scrollok(stdscr, FALSE); 352 353 /* Make color pair to match color format (3bits bg:3bits fg) */ 354 for (i = 0; i < 64; i++) { 355 init_pair(i, colour_default[i & 7], colour_default[i >> 3]); 356 } 357 /* Set default color for more than 64 for safety. */ 358 for (i = 64; i < COLOR_PAIRS; i++) { 359 init_pair(i, COLOR_WHITE, COLOR_BLACK); 360 } 361 362 /* 363 * Setup mapping for vga to curses line graphics. 364 * FIXME: for better font, have to use ncursesw and setlocale() 365 */ 366 #if 0 367 /* FIXME: map from where? */ 368 ACS_S1; 369 ACS_S3; 370 ACS_S7; 371 ACS_S9; 372 #endif 373 /* ACS_* is not constant. So, we can't initialize statically. */ 374 vga_to_curses['\0'] = ' '; 375 vga_to_curses[0x04] = ACS_DIAMOND; 376 vga_to_curses[0x0a] = ACS_RARROW; 377 vga_to_curses[0x0b] = ACS_LARROW; 378 vga_to_curses[0x18] = ACS_UARROW; 379 vga_to_curses[0x19] = ACS_DARROW; 380 vga_to_curses[0x9c] = ACS_STERLING; 381 vga_to_curses[0xb0] = ACS_BOARD; 382 vga_to_curses[0xb1] = ACS_CKBOARD; 383 vga_to_curses[0xb3] = ACS_VLINE; 384 vga_to_curses[0xb4] = ACS_RTEE; 385 vga_to_curses[0xbf] = ACS_URCORNER; 386 vga_to_curses[0xc0] = ACS_LLCORNER; 387 vga_to_curses[0xc1] = ACS_BTEE; 388 vga_to_curses[0xc2] = ACS_TTEE; 389 vga_to_curses[0xc3] = ACS_LTEE; 390 vga_to_curses[0xc4] = ACS_HLINE; 391 vga_to_curses[0xc5] = ACS_PLUS; 392 vga_to_curses[0xce] = ACS_LANTERN; 393 vga_to_curses[0xd8] = ACS_NEQUAL; 394 vga_to_curses[0xd9] = ACS_LRCORNER; 395 vga_to_curses[0xda] = ACS_ULCORNER; 396 vga_to_curses[0xdb] = ACS_BLOCK; 397 vga_to_curses[0xe3] = ACS_PI; 398 vga_to_curses[0xf1] = ACS_PLMINUS; 399 vga_to_curses[0xf2] = ACS_GEQUAL; 400 vga_to_curses[0xf3] = ACS_LEQUAL; 401 vga_to_curses[0xf8] = ACS_DEGREE; 402 vga_to_curses[0xfe] = ACS_BULLET; 403 } 404 405 static void curses_keyboard_setup(void) 406 { 407 #if defined(__APPLE__) 408 /* always use generic keymaps */ 409 if (!keyboard_layout) 410 keyboard_layout = "en-us"; 411 #endif 412 if(keyboard_layout) { 413 kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout); 414 if (!kbd_layout) 415 exit(1); 416 } 417 } 418 419 static const DisplayChangeListenerOps dcl_ops = { 420 .dpy_name = "curses", 421 .dpy_text_update = curses_update, 422 .dpy_text_resize = curses_resize, 423 .dpy_refresh = curses_refresh, 424 .dpy_text_cursor = curses_cursor_position, 425 }; 426 427 void curses_display_init(DisplayState *ds, int full_screen) 428 { 429 #ifndef _WIN32 430 if (!isatty(1)) { 431 fprintf(stderr, "We need a terminal output\n"); 432 exit(1); 433 } 434 #endif 435 436 curses_setup(); 437 curses_keyboard_setup(); 438 atexit(curses_atexit); 439 440 curses_winch_init(); 441 442 dcl = g_new0(DisplayChangeListener, 1); 443 dcl->ops = &dcl_ops; 444 register_displaychangelistener(dcl); 445 446 invalidate = 1; 447 } 448