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 "console.h" 33 #include "sysemu.h" 34 35 #define FONT_HEIGHT 16 36 #define FONT_WIDTH 8 37 38 static console_ch_t screen[160 * 100]; 39 static WINDOW *screenpad = NULL; 40 static int width, height, gwidth, gheight, invalidate; 41 static int px, py, sminx, sminy, smaxx, smaxy; 42 43 static void curses_update(DisplayState *ds, int x, int y, int w, int h) 44 { 45 chtype *line; 46 47 line = ((chtype *) screen) + y * width; 48 for (h += y; y < h; y ++, line += width) 49 mvwaddchnstr(screenpad, y, 0, line, width); 50 51 pnoutrefresh(screenpad, py, px, sminy, sminx, smaxy - 1, smaxx - 1); 52 refresh(); 53 } 54 55 static void curses_calc_pad(void) 56 { 57 if (is_fixedsize_console()) { 58 width = gwidth; 59 height = gheight; 60 } else { 61 width = COLS; 62 height = LINES; 63 } 64 65 if (screenpad) 66 delwin(screenpad); 67 68 clear(); 69 refresh(); 70 71 screenpad = newpad(height, width); 72 73 if (width > COLS) { 74 px = (width - COLS) / 2; 75 sminx = 0; 76 smaxx = COLS; 77 } else { 78 px = 0; 79 sminx = (COLS - width) / 2; 80 smaxx = sminx + width; 81 } 82 83 if (height > LINES) { 84 py = (height - LINES) / 2; 85 sminy = 0; 86 smaxy = LINES; 87 } else { 88 py = 0; 89 sminy = (LINES - height) / 2; 90 smaxy = sminy + height; 91 } 92 } 93 94 static void curses_resize(DisplayState *ds, int width, int height) 95 { 96 if (width == gwidth && height == gheight) { 97 return; 98 } 99 100 gwidth = width; 101 gheight = height; 102 103 curses_calc_pad(); 104 } 105 106 #ifndef _WIN32 107 #if defined(SIGWINCH) && defined(KEY_RESIZE) 108 static void curses_winch_handler(int signum) 109 { 110 struct winsize { 111 unsigned short ws_row; 112 unsigned short ws_col; 113 unsigned short ws_xpixel; /* unused */ 114 unsigned short ws_ypixel; /* unused */ 115 } ws; 116 117 /* terminal size changed */ 118 if (ioctl(1, TIOCGWINSZ, &ws) == -1) 119 return; 120 121 resize_term(ws.ws_row, ws.ws_col); 122 curses_calc_pad(); 123 invalidate = 1; 124 125 /* some systems require this */ 126 signal(SIGWINCH, curses_winch_handler); 127 } 128 #endif 129 #endif 130 131 static void curses_cursor_position(DisplayState *ds, int x, int y) 132 { 133 if (x >= 0) { 134 x = sminx + x - px; 135 y = sminy + y - py; 136 137 if (x >= 0 && y >= 0 && x < COLS && y < LINES) { 138 move(y, x); 139 curs_set(1); 140 /* it seems that curs_set(1) must always be called before 141 * curs_set(2) for the latter to have effect */ 142 if (!is_graphic_console()) 143 curs_set(2); 144 return; 145 } 146 } 147 148 curs_set(0); 149 } 150 151 /* generic keyboard conversion */ 152 153 #include "curses_keys.h" 154 155 static kbd_layout_t *kbd_layout = NULL; 156 157 static void curses_refresh(DisplayState *ds) 158 { 159 int chr, nextchr, keysym, keycode, keycode_alt; 160 161 if (invalidate) { 162 clear(); 163 refresh(); 164 curses_calc_pad(); 165 vga_hw_invalidate(); 166 invalidate = 0; 167 } 168 169 vga_hw_text_update(screen); 170 171 nextchr = ERR; 172 while (1) { 173 /* while there are any pending key strokes to process */ 174 if (nextchr == ERR) 175 chr = getch(); 176 else { 177 chr = nextchr; 178 nextchr = ERR; 179 } 180 181 if (chr == ERR) 182 break; 183 184 #ifdef KEY_RESIZE 185 /* this shouldn't occur when we use a custom SIGWINCH handler */ 186 if (chr == KEY_RESIZE) { 187 clear(); 188 refresh(); 189 curses_calc_pad(); 190 curses_update(ds, 0, 0, width, height); 191 continue; 192 } 193 #endif 194 195 keycode = curses2keycode[chr]; 196 keycode_alt = 0; 197 198 /* alt key */ 199 if (keycode == 1) { 200 nextchr = getch(); 201 202 if (nextchr != ERR) { 203 chr = nextchr; 204 keycode_alt = ALT; 205 keycode = curses2keycode[nextchr]; 206 nextchr = ERR; 207 208 if (keycode != -1) { 209 keycode |= ALT; 210 211 /* process keys reserved for qemu */ 212 if (keycode >= QEMU_KEY_CONSOLE0 && 213 keycode < QEMU_KEY_CONSOLE0 + 9) { 214 erase(); 215 wnoutrefresh(stdscr); 216 console_select(keycode - QEMU_KEY_CONSOLE0); 217 218 invalidate = 1; 219 continue; 220 } 221 } 222 } 223 } 224 225 if (kbd_layout) { 226 keysym = -1; 227 if (chr < CURSES_KEYS) 228 keysym = curses2keysym[chr]; 229 230 if (keysym == -1) { 231 if (chr < ' ') { 232 keysym = chr + '@'; 233 if (keysym >= 'A' && keysym <= 'Z') 234 keysym += 'a' - 'A'; 235 keysym |= KEYSYM_CNTRL; 236 } else 237 keysym = chr; 238 } 239 240 keycode = keysym2scancode(kbd_layout, keysym & KEYSYM_MASK); 241 if (keycode == 0) 242 continue; 243 244 keycode |= (keysym & ~KEYSYM_MASK) >> 16; 245 keycode |= keycode_alt; 246 } 247 248 if (keycode == -1) 249 continue; 250 251 if (is_graphic_console()) { 252 /* since terminals don't know about key press and release 253 * events, we need to emit both for each key received */ 254 if (keycode & SHIFT) 255 kbd_put_keycode(SHIFT_CODE); 256 if (keycode & CNTRL) 257 kbd_put_keycode(CNTRL_CODE); 258 if (keycode & ALT) 259 kbd_put_keycode(ALT_CODE); 260 if (keycode & ALTGR) { 261 kbd_put_keycode(SCANCODE_EMUL0); 262 kbd_put_keycode(ALT_CODE); 263 } 264 if (keycode & GREY) 265 kbd_put_keycode(GREY_CODE); 266 kbd_put_keycode(keycode & KEY_MASK); 267 if (keycode & GREY) 268 kbd_put_keycode(GREY_CODE); 269 kbd_put_keycode((keycode & KEY_MASK) | KEY_RELEASE); 270 if (keycode & ALTGR) { 271 kbd_put_keycode(SCANCODE_EMUL0); 272 kbd_put_keycode(ALT_CODE | KEY_RELEASE); 273 } 274 if (keycode & ALT) 275 kbd_put_keycode(ALT_CODE | KEY_RELEASE); 276 if (keycode & CNTRL) 277 kbd_put_keycode(CNTRL_CODE | KEY_RELEASE); 278 if (keycode & SHIFT) 279 kbd_put_keycode(SHIFT_CODE | KEY_RELEASE); 280 } else { 281 keysym = curses2qemu[chr]; 282 if (keysym == -1) 283 keysym = chr; 284 285 kbd_put_keysym(keysym); 286 } 287 } 288 } 289 290 static void curses_atexit(void) 291 { 292 endwin(); 293 } 294 295 static void curses_setup(void) 296 { 297 int i, colour_default[8] = { 298 COLOR_BLACK, COLOR_BLUE, COLOR_GREEN, COLOR_CYAN, 299 COLOR_RED, COLOR_MAGENTA, COLOR_YELLOW, COLOR_WHITE, 300 }; 301 302 /* input as raw as possible, let everything be interpreted 303 * by the guest system */ 304 initscr(); noecho(); intrflush(stdscr, FALSE); 305 nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE); 306 start_color(); raw(); scrollok(stdscr, FALSE); 307 308 for (i = 0; i < 64; i ++) 309 init_pair(i, colour_default[i & 7], colour_default[i >> 3]); 310 } 311 312 static void curses_keyboard_setup(void) 313 { 314 #if defined(__APPLE__) 315 /* always use generic keymaps */ 316 if (!keyboard_layout) 317 keyboard_layout = "en-us"; 318 #endif 319 if(keyboard_layout) { 320 kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout); 321 if (!kbd_layout) 322 exit(1); 323 } 324 } 325 326 void curses_display_init(DisplayState *ds, int full_screen) 327 { 328 DisplayChangeListener *dcl; 329 #ifndef _WIN32 330 if (!isatty(1)) { 331 fprintf(stderr, "We need a terminal output\n"); 332 exit(1); 333 } 334 #endif 335 336 curses_setup(); 337 curses_keyboard_setup(); 338 atexit(curses_atexit); 339 340 #ifndef _WIN32 341 #if defined(SIGWINCH) && defined(KEY_RESIZE) 342 /* some curses implementations provide a handler, but we 343 * want to be sure this is handled regardless of the library */ 344 signal(SIGWINCH, curses_winch_handler); 345 #endif 346 #endif 347 348 dcl = (DisplayChangeListener *) g_malloc0(sizeof(DisplayChangeListener)); 349 dcl->dpy_text_update = curses_update; 350 dcl->dpy_text_resize = curses_resize; 351 dcl->dpy_refresh = curses_refresh; 352 dcl->dpy_text_cursor = curses_cursor_position; 353 register_displaychangelistener(ds, dcl); 354 355 invalidate = 1; 356 } 357