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 "sysemu/sysemu.h" 34 35 #define FONT_HEIGHT 16 36 #define FONT_WIDTH 8 37 38 static DisplayChangeListener *dcl; 39 static console_ch_t screen[160 * 100]; 40 static WINDOW *screenpad = NULL; 41 static int width, height, gwidth, gheight, invalidate; 42 static int px, py, sminx, sminy, smaxx, smaxy; 43 44 static void curses_update(DisplayChangeListener *dcl, 45 int x, int y, int w, int h) 46 { 47 chtype *line; 48 49 line = ((chtype *) screen) + y * width; 50 for (h += y; y < h; y ++, line += width) 51 mvwaddchnstr(screenpad, y, 0, line, width); 52 53 pnoutrefresh(screenpad, py, px, sminy, sminx, smaxy - 1, smaxx - 1); 54 refresh(); 55 } 56 57 static void curses_calc_pad(void) 58 { 59 if (is_fixedsize_console()) { 60 width = gwidth; 61 height = gheight; 62 } else { 63 width = COLS; 64 height = LINES; 65 } 66 67 if (screenpad) 68 delwin(screenpad); 69 70 clear(); 71 refresh(); 72 73 screenpad = newpad(height, width); 74 75 if (width > COLS) { 76 px = (width - COLS) / 2; 77 sminx = 0; 78 smaxx = COLS; 79 } else { 80 px = 0; 81 sminx = (COLS - width) / 2; 82 smaxx = sminx + width; 83 } 84 85 if (height > LINES) { 86 py = (height - LINES) / 2; 87 sminy = 0; 88 smaxy = LINES; 89 } else { 90 py = 0; 91 sminy = (LINES - height) / 2; 92 smaxy = sminy + height; 93 } 94 } 95 96 static void curses_resize(DisplayChangeListener *dcl, 97 int width, int height) 98 { 99 if (width == gwidth && height == gheight) { 100 return; 101 } 102 103 gwidth = width; 104 gheight = height; 105 106 curses_calc_pad(); 107 } 108 109 #ifndef _WIN32 110 #if defined(SIGWINCH) && defined(KEY_RESIZE) 111 static void curses_winch_handler(int signum) 112 { 113 struct winsize { 114 unsigned short ws_row; 115 unsigned short ws_col; 116 unsigned short ws_xpixel; /* unused */ 117 unsigned short ws_ypixel; /* unused */ 118 } ws; 119 120 /* terminal size changed */ 121 if (ioctl(1, TIOCGWINSZ, &ws) == -1) 122 return; 123 124 resize_term(ws.ws_row, ws.ws_col); 125 curses_calc_pad(); 126 invalidate = 1; 127 128 /* some systems require this */ 129 signal(SIGWINCH, curses_winch_handler); 130 } 131 #endif 132 #endif 133 134 static void curses_cursor_position(DisplayChangeListener *dcl, 135 int x, int y) 136 { 137 if (x >= 0) { 138 x = sminx + x - px; 139 y = sminy + y - py; 140 141 if (x >= 0 && y >= 0 && x < COLS && y < LINES) { 142 move(y, x); 143 curs_set(1); 144 /* it seems that curs_set(1) must always be called before 145 * curs_set(2) for the latter to have effect */ 146 if (!is_graphic_console()) 147 curs_set(2); 148 return; 149 } 150 } 151 152 curs_set(0); 153 } 154 155 /* generic keyboard conversion */ 156 157 #include "curses_keys.h" 158 159 static kbd_layout_t *kbd_layout = NULL; 160 161 static void curses_refresh(DisplayChangeListener *dcl) 162 { 163 int chr, nextchr, keysym, keycode, keycode_alt; 164 165 if (invalidate) { 166 clear(); 167 refresh(); 168 curses_calc_pad(); 169 vga_hw_invalidate(); 170 invalidate = 0; 171 } 172 173 vga_hw_text_update(screen); 174 175 nextchr = ERR; 176 while (1) { 177 /* while there are any pending key strokes to process */ 178 if (nextchr == ERR) 179 chr = getch(); 180 else { 181 chr = nextchr; 182 nextchr = ERR; 183 } 184 185 if (chr == ERR) 186 break; 187 188 #ifdef KEY_RESIZE 189 /* this shouldn't occur when we use a custom SIGWINCH handler */ 190 if (chr == KEY_RESIZE) { 191 clear(); 192 refresh(); 193 curses_calc_pad(); 194 curses_update(dcl, 0, 0, width, height); 195 continue; 196 } 197 #endif 198 199 keycode = curses2keycode[chr]; 200 keycode_alt = 0; 201 202 /* alt key */ 203 if (keycode == 1) { 204 nextchr = getch(); 205 206 if (nextchr != ERR) { 207 chr = nextchr; 208 keycode_alt = ALT; 209 keycode = curses2keycode[nextchr]; 210 nextchr = ERR; 211 212 if (keycode != -1) { 213 keycode |= ALT; 214 215 /* process keys reserved for qemu */ 216 if (keycode >= QEMU_KEY_CONSOLE0 && 217 keycode < QEMU_KEY_CONSOLE0 + 9) { 218 erase(); 219 wnoutrefresh(stdscr); 220 console_select(keycode - QEMU_KEY_CONSOLE0); 221 222 invalidate = 1; 223 continue; 224 } 225 } 226 } 227 } 228 229 if (kbd_layout) { 230 keysym = -1; 231 if (chr < CURSES_KEYS) 232 keysym = curses2keysym[chr]; 233 234 if (keysym == -1) { 235 if (chr < ' ') { 236 keysym = chr + '@'; 237 if (keysym >= 'A' && keysym <= 'Z') 238 keysym += 'a' - 'A'; 239 keysym |= KEYSYM_CNTRL; 240 } else 241 keysym = chr; 242 } 243 244 keycode = keysym2scancode(kbd_layout, keysym & KEYSYM_MASK); 245 if (keycode == 0) 246 continue; 247 248 keycode |= (keysym & ~KEYSYM_MASK) >> 16; 249 keycode |= keycode_alt; 250 } 251 252 if (keycode == -1) 253 continue; 254 255 if (is_graphic_console()) { 256 /* since terminals don't know about key press and release 257 * events, we need to emit both for each key received */ 258 if (keycode & SHIFT) 259 kbd_put_keycode(SHIFT_CODE); 260 if (keycode & CNTRL) 261 kbd_put_keycode(CNTRL_CODE); 262 if (keycode & ALT) 263 kbd_put_keycode(ALT_CODE); 264 if (keycode & ALTGR) { 265 kbd_put_keycode(SCANCODE_EMUL0); 266 kbd_put_keycode(ALT_CODE); 267 } 268 if (keycode & GREY) 269 kbd_put_keycode(GREY_CODE); 270 kbd_put_keycode(keycode & KEY_MASK); 271 if (keycode & GREY) 272 kbd_put_keycode(GREY_CODE); 273 kbd_put_keycode((keycode & KEY_MASK) | KEY_RELEASE); 274 if (keycode & ALTGR) { 275 kbd_put_keycode(SCANCODE_EMUL0); 276 kbd_put_keycode(ALT_CODE | KEY_RELEASE); 277 } 278 if (keycode & ALT) 279 kbd_put_keycode(ALT_CODE | KEY_RELEASE); 280 if (keycode & CNTRL) 281 kbd_put_keycode(CNTRL_CODE | KEY_RELEASE); 282 if (keycode & SHIFT) 283 kbd_put_keycode(SHIFT_CODE | KEY_RELEASE); 284 } else { 285 keysym = curses2qemu[chr]; 286 if (keysym == -1) 287 keysym = chr; 288 289 kbd_put_keysym(keysym); 290 } 291 } 292 } 293 294 static void curses_atexit(void) 295 { 296 endwin(); 297 } 298 299 static void curses_setup(void) 300 { 301 int i, colour_default[8] = { 302 COLOR_BLACK, COLOR_BLUE, COLOR_GREEN, COLOR_CYAN, 303 COLOR_RED, COLOR_MAGENTA, COLOR_YELLOW, COLOR_WHITE, 304 }; 305 306 /* input as raw as possible, let everything be interpreted 307 * by the guest system */ 308 initscr(); noecho(); intrflush(stdscr, FALSE); 309 nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE); 310 start_color(); raw(); scrollok(stdscr, FALSE); 311 312 for (i = 0; i < 64; i ++) 313 init_pair(i, colour_default[i & 7], colour_default[i >> 3]); 314 } 315 316 static void curses_keyboard_setup(void) 317 { 318 #if defined(__APPLE__) 319 /* always use generic keymaps */ 320 if (!keyboard_layout) 321 keyboard_layout = "en-us"; 322 #endif 323 if(keyboard_layout) { 324 kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout); 325 if (!kbd_layout) 326 exit(1); 327 } 328 } 329 330 static const DisplayChangeListenerOps dcl_ops = { 331 .dpy_name = "curses", 332 .dpy_text_update = curses_update, 333 .dpy_text_resize = curses_resize, 334 .dpy_refresh = curses_refresh, 335 .dpy_text_cursor = curses_cursor_position, 336 }; 337 338 void curses_display_init(DisplayState *ds, int full_screen) 339 { 340 #ifndef _WIN32 341 if (!isatty(1)) { 342 fprintf(stderr, "We need a terminal output\n"); 343 exit(1); 344 } 345 #endif 346 347 curses_setup(); 348 curses_keyboard_setup(); 349 atexit(curses_atexit); 350 351 #ifndef _WIN32 352 #if defined(SIGWINCH) && defined(KEY_RESIZE) 353 /* some curses implementations provide a handler, but we 354 * want to be sure this is handled regardless of the library */ 355 signal(SIGWINCH, curses_winch_handler); 356 #endif 357 #endif 358 359 dcl = (DisplayChangeListener *) g_malloc0(sizeof(DisplayChangeListener)); 360 dcl->ops = &dcl_ops; 361 register_displaychangelistener(ds, dcl); 362 363 invalidate = 1; 364 } 365