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 <curses.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 #define FONT_HEIGHT 16 37 #define FONT_WIDTH 8 38 39 static DisplayChangeListener *dcl; 40 static console_ch_t screen[160 * 100]; 41 static WINDOW *screenpad = NULL; 42 static int width, height, gwidth, gheight, invalidate; 43 static int px, py, sminx, sminy, smaxx, smaxy; 44 45 chtype vga_to_curses[256]; 46 47 static void curses_update(DisplayChangeListener *dcl, 48 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 (qemu_console_is_fixedsize(NULL)) { 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(DisplayChangeListener *dcl, 100 int width, int height) 101 { 102 if (width == gwidth && height == gheight) { 103 return; 104 } 105 106 gwidth = width; 107 gheight = height; 108 109 curses_calc_pad(); 110 } 111 112 #if !defined(_WIN32) && defined(SIGWINCH) && defined(KEY_RESIZE) 113 static volatile sig_atomic_t got_sigwinch; 114 static void curses_winch_check(void) 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 if (!got_sigwinch) { 124 return; 125 } 126 got_sigwinch = false; 127 128 if (ioctl(1, TIOCGWINSZ, &ws) == -1) { 129 return; 130 } 131 132 resize_term(ws.ws_row, ws.ws_col); 133 invalidate = 1; 134 } 135 136 static void curses_winch_handler(int signum) 137 { 138 got_sigwinch = true; 139 } 140 141 static void curses_winch_init(void) 142 { 143 struct sigaction old, winch = { 144 .sa_handler = curses_winch_handler, 145 }; 146 sigaction(SIGWINCH, &winch, &old); 147 } 148 #else 149 static void curses_winch_check(void) {} 150 static void curses_winch_init(void) {} 151 #endif 152 153 static void curses_cursor_position(DisplayChangeListener *dcl, 154 int x, int y) 155 { 156 if (x >= 0) { 157 x = sminx + x - px; 158 y = sminy + y - py; 159 160 if (x >= 0 && y >= 0 && x < COLS && y < LINES) { 161 move(y, x); 162 curs_set(1); 163 /* it seems that curs_set(1) must always be called before 164 * curs_set(2) for the latter to have effect */ 165 if (!qemu_console_is_graphic(NULL)) { 166 curs_set(2); 167 } 168 return; 169 } 170 } 171 172 curs_set(0); 173 } 174 175 /* generic keyboard conversion */ 176 177 #include "curses_keys.h" 178 179 static kbd_layout_t *kbd_layout = NULL; 180 181 static void curses_refresh(DisplayChangeListener *dcl) 182 { 183 int chr, nextchr, keysym, keycode, keycode_alt; 184 185 curses_winch_check(); 186 187 if (invalidate) { 188 clear(); 189 refresh(); 190 curses_calc_pad(); 191 graphic_hw_invalidate(NULL); 192 invalidate = 0; 193 } 194 195 graphic_hw_text_update(NULL, screen); 196 197 nextchr = ERR; 198 while (1) { 199 /* while there are any pending key strokes to process */ 200 if (nextchr == ERR) 201 chr = getch(); 202 else { 203 chr = nextchr; 204 nextchr = ERR; 205 } 206 207 if (chr == ERR) 208 break; 209 210 #ifdef KEY_RESIZE 211 /* this shouldn't occur when we use a custom SIGWINCH handler */ 212 if (chr == KEY_RESIZE) { 213 clear(); 214 refresh(); 215 curses_calc_pad(); 216 curses_update(dcl, 0, 0, width, height); 217 continue; 218 } 219 #endif 220 221 keycode = curses2keycode[chr]; 222 keycode_alt = 0; 223 224 /* alt key */ 225 if (keycode == 1) { 226 nextchr = getch(); 227 228 if (nextchr != ERR) { 229 chr = nextchr; 230 keycode_alt = ALT; 231 keycode = curses2keycode[nextchr]; 232 nextchr = ERR; 233 234 if (keycode != -1) { 235 keycode |= ALT; 236 237 /* process keys reserved for qemu */ 238 if (keycode >= QEMU_KEY_CONSOLE0 && 239 keycode < QEMU_KEY_CONSOLE0 + 9) { 240 erase(); 241 wnoutrefresh(stdscr); 242 console_select(keycode - QEMU_KEY_CONSOLE0); 243 244 invalidate = 1; 245 continue; 246 } 247 } 248 } 249 } 250 251 if (kbd_layout) { 252 keysym = -1; 253 if (chr < CURSES_KEYS) 254 keysym = curses2keysym[chr]; 255 256 if (keysym == -1) { 257 if (chr < ' ') { 258 keysym = chr + '@'; 259 if (keysym >= 'A' && keysym <= 'Z') 260 keysym += 'a' - 'A'; 261 keysym |= KEYSYM_CNTRL; 262 } else 263 keysym = chr; 264 } 265 266 keycode = keysym2scancode(kbd_layout, keysym & KEYSYM_MASK); 267 if (keycode == 0) 268 continue; 269 270 keycode |= (keysym & ~KEYSYM_MASK) >> 16; 271 keycode |= keycode_alt; 272 } 273 274 if (keycode == -1) 275 continue; 276 277 if (qemu_console_is_graphic(NULL)) { 278 /* since terminals don't know about key press and release 279 * events, we need to emit both for each key received */ 280 if (keycode & SHIFT) { 281 qemu_input_event_send_key_number(NULL, SHIFT_CODE, true); 282 qemu_input_event_send_key_delay(0); 283 } 284 if (keycode & CNTRL) { 285 qemu_input_event_send_key_number(NULL, CNTRL_CODE, true); 286 qemu_input_event_send_key_delay(0); 287 } 288 if (keycode & ALT) { 289 qemu_input_event_send_key_number(NULL, ALT_CODE, true); 290 qemu_input_event_send_key_delay(0); 291 } 292 if (keycode & ALTGR) { 293 qemu_input_event_send_key_number(NULL, GREY | ALT_CODE, true); 294 qemu_input_event_send_key_delay(0); 295 } 296 297 qemu_input_event_send_key_number(NULL, keycode & KEY_MASK, true); 298 qemu_input_event_send_key_delay(0); 299 qemu_input_event_send_key_number(NULL, keycode & KEY_MASK, false); 300 qemu_input_event_send_key_delay(0); 301 302 if (keycode & ALTGR) { 303 qemu_input_event_send_key_number(NULL, GREY | ALT_CODE, false); 304 qemu_input_event_send_key_delay(0); 305 } 306 if (keycode & ALT) { 307 qemu_input_event_send_key_number(NULL, ALT_CODE, false); 308 qemu_input_event_send_key_delay(0); 309 } 310 if (keycode & CNTRL) { 311 qemu_input_event_send_key_number(NULL, CNTRL_CODE, false); 312 qemu_input_event_send_key_delay(0); 313 } 314 if (keycode & SHIFT) { 315 qemu_input_event_send_key_number(NULL, SHIFT_CODE, false); 316 qemu_input_event_send_key_delay(0); 317 } 318 } else { 319 keysym = curses2qemu[chr]; 320 if (keysym == -1) 321 keysym = chr; 322 323 kbd_put_keysym(keysym); 324 } 325 } 326 } 327 328 static void curses_atexit(void) 329 { 330 endwin(); 331 } 332 333 static void curses_setup(void) 334 { 335 int i, colour_default[8] = { 336 [QEMU_COLOR_BLACK] = COLOR_BLACK, 337 [QEMU_COLOR_BLUE] = COLOR_BLUE, 338 [QEMU_COLOR_GREEN] = COLOR_GREEN, 339 [QEMU_COLOR_CYAN] = COLOR_CYAN, 340 [QEMU_COLOR_RED] = COLOR_RED, 341 [QEMU_COLOR_MAGENTA] = COLOR_MAGENTA, 342 [QEMU_COLOR_YELLOW] = COLOR_YELLOW, 343 [QEMU_COLOR_WHITE] = COLOR_WHITE, 344 }; 345 346 /* input as raw as possible, let everything be interpreted 347 * by the guest system */ 348 initscr(); noecho(); intrflush(stdscr, FALSE); 349 nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE); 350 start_color(); raw(); scrollok(stdscr, FALSE); 351 352 /* Make color pair to match color format (3bits bg:3bits fg) */ 353 for (i = 0; i < 64; i++) { 354 init_pair(i, colour_default[i & 7], colour_default[i >> 3]); 355 } 356 /* Set default color for more than 64 for safety. */ 357 for (i = 64; i < COLOR_PAIRS; i++) { 358 init_pair(i, COLOR_WHITE, COLOR_BLACK); 359 } 360 361 /* 362 * Setup mapping for vga to curses line graphics. 363 * FIXME: for better font, have to use ncursesw and setlocale() 364 */ 365 #if 0 366 /* FIXME: map from where? */ 367 ACS_S1; 368 ACS_S3; 369 ACS_S7; 370 ACS_S9; 371 #endif 372 /* ACS_* is not constant. So, we can't initialize statically. */ 373 vga_to_curses['\0'] = ' '; 374 vga_to_curses[0x04] = ACS_DIAMOND; 375 vga_to_curses[0x0a] = ACS_RARROW; 376 vga_to_curses[0x0b] = ACS_LARROW; 377 vga_to_curses[0x18] = ACS_UARROW; 378 vga_to_curses[0x19] = ACS_DARROW; 379 vga_to_curses[0x9c] = ACS_STERLING; 380 vga_to_curses[0xb0] = ACS_BOARD; 381 vga_to_curses[0xb1] = ACS_CKBOARD; 382 vga_to_curses[0xb3] = ACS_VLINE; 383 vga_to_curses[0xb4] = ACS_RTEE; 384 vga_to_curses[0xbf] = ACS_URCORNER; 385 vga_to_curses[0xc0] = ACS_LLCORNER; 386 vga_to_curses[0xc1] = ACS_BTEE; 387 vga_to_curses[0xc2] = ACS_TTEE; 388 vga_to_curses[0xc3] = ACS_LTEE; 389 vga_to_curses[0xc4] = ACS_HLINE; 390 vga_to_curses[0xc5] = ACS_PLUS; 391 vga_to_curses[0xce] = ACS_LANTERN; 392 vga_to_curses[0xd8] = ACS_NEQUAL; 393 vga_to_curses[0xd9] = ACS_LRCORNER; 394 vga_to_curses[0xda] = ACS_ULCORNER; 395 vga_to_curses[0xdb] = ACS_BLOCK; 396 vga_to_curses[0xe3] = ACS_PI; 397 vga_to_curses[0xf1] = ACS_PLMINUS; 398 vga_to_curses[0xf2] = ACS_GEQUAL; 399 vga_to_curses[0xf3] = ACS_LEQUAL; 400 vga_to_curses[0xf8] = ACS_DEGREE; 401 vga_to_curses[0xfe] = ACS_BULLET; 402 } 403 404 static void curses_keyboard_setup(void) 405 { 406 #if defined(__APPLE__) 407 /* always use generic keymaps */ 408 if (!keyboard_layout) 409 keyboard_layout = "en-us"; 410 #endif 411 if(keyboard_layout) { 412 kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout); 413 if (!kbd_layout) 414 exit(1); 415 } 416 } 417 418 static const DisplayChangeListenerOps dcl_ops = { 419 .dpy_name = "curses", 420 .dpy_text_update = curses_update, 421 .dpy_text_resize = curses_resize, 422 .dpy_refresh = curses_refresh, 423 .dpy_text_cursor = curses_cursor_position, 424 }; 425 426 void curses_display_init(DisplayState *ds, int full_screen) 427 { 428 #ifndef _WIN32 429 if (!isatty(1)) { 430 fprintf(stderr, "We need a terminal output\n"); 431 exit(1); 432 } 433 #endif 434 435 curses_setup(); 436 curses_keyboard_setup(); 437 atexit(curses_atexit); 438 439 curses_winch_init(); 440 441 dcl = g_new0(DisplayChangeListener, 1); 442 dcl->ops = &dcl_ops; 443 register_displaychangelistener(dcl); 444 445 invalidate = 1; 446 } 447