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 (qemu_console_is_fixedsize(NULL)) { 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 (!qemu_console_is_graphic(NULL)) { 147 curs_set(2); 148 } 149 return; 150 } 151 } 152 153 curs_set(0); 154 } 155 156 /* generic keyboard conversion */ 157 158 #include "curses_keys.h" 159 160 static kbd_layout_t *kbd_layout = NULL; 161 162 static void curses_refresh(DisplayChangeListener *dcl) 163 { 164 int chr, nextchr, keysym, keycode, keycode_alt; 165 166 if (invalidate) { 167 clear(); 168 refresh(); 169 curses_calc_pad(); 170 graphic_hw_invalidate(NULL); 171 invalidate = 0; 172 } 173 174 graphic_hw_text_update(NULL, screen); 175 176 nextchr = ERR; 177 while (1) { 178 /* while there are any pending key strokes to process */ 179 if (nextchr == ERR) 180 chr = getch(); 181 else { 182 chr = nextchr; 183 nextchr = ERR; 184 } 185 186 if (chr == ERR) 187 break; 188 189 #ifdef KEY_RESIZE 190 /* this shouldn't occur when we use a custom SIGWINCH handler */ 191 if (chr == KEY_RESIZE) { 192 clear(); 193 refresh(); 194 curses_calc_pad(); 195 curses_update(dcl, 0, 0, width, height); 196 continue; 197 } 198 #endif 199 200 keycode = curses2keycode[chr]; 201 keycode_alt = 0; 202 203 /* alt key */ 204 if (keycode == 1) { 205 nextchr = getch(); 206 207 if (nextchr != ERR) { 208 chr = nextchr; 209 keycode_alt = ALT; 210 keycode = curses2keycode[nextchr]; 211 nextchr = ERR; 212 213 if (keycode != -1) { 214 keycode |= ALT; 215 216 /* process keys reserved for qemu */ 217 if (keycode >= QEMU_KEY_CONSOLE0 && 218 keycode < QEMU_KEY_CONSOLE0 + 9) { 219 erase(); 220 wnoutrefresh(stdscr); 221 console_select(keycode - QEMU_KEY_CONSOLE0); 222 223 invalidate = 1; 224 continue; 225 } 226 } 227 } 228 } 229 230 if (kbd_layout) { 231 keysym = -1; 232 if (chr < CURSES_KEYS) 233 keysym = curses2keysym[chr]; 234 235 if (keysym == -1) { 236 if (chr < ' ') { 237 keysym = chr + '@'; 238 if (keysym >= 'A' && keysym <= 'Z') 239 keysym += 'a' - 'A'; 240 keysym |= KEYSYM_CNTRL; 241 } else 242 keysym = chr; 243 } 244 245 keycode = keysym2scancode(kbd_layout, keysym & KEYSYM_MASK); 246 if (keycode == 0) 247 continue; 248 249 keycode |= (keysym & ~KEYSYM_MASK) >> 16; 250 keycode |= keycode_alt; 251 } 252 253 if (keycode == -1) 254 continue; 255 256 if (qemu_console_is_graphic(NULL)) { 257 /* since terminals don't know about key press and release 258 * events, we need to emit both for each key received */ 259 if (keycode & SHIFT) 260 kbd_put_keycode(SHIFT_CODE); 261 if (keycode & CNTRL) 262 kbd_put_keycode(CNTRL_CODE); 263 if (keycode & ALT) 264 kbd_put_keycode(ALT_CODE); 265 if (keycode & ALTGR) { 266 kbd_put_keycode(SCANCODE_EMUL0); 267 kbd_put_keycode(ALT_CODE); 268 } 269 if (keycode & GREY) 270 kbd_put_keycode(GREY_CODE); 271 kbd_put_keycode(keycode & KEY_MASK); 272 if (keycode & GREY) 273 kbd_put_keycode(GREY_CODE); 274 kbd_put_keycode((keycode & KEY_MASK) | KEY_RELEASE); 275 if (keycode & ALTGR) { 276 kbd_put_keycode(SCANCODE_EMUL0); 277 kbd_put_keycode(ALT_CODE | KEY_RELEASE); 278 } 279 if (keycode & ALT) 280 kbd_put_keycode(ALT_CODE | KEY_RELEASE); 281 if (keycode & CNTRL) 282 kbd_put_keycode(CNTRL_CODE | KEY_RELEASE); 283 if (keycode & SHIFT) 284 kbd_put_keycode(SHIFT_CODE | KEY_RELEASE); 285 } else { 286 keysym = curses2qemu[chr]; 287 if (keysym == -1) 288 keysym = chr; 289 290 kbd_put_keysym(keysym); 291 } 292 } 293 } 294 295 static void curses_atexit(void) 296 { 297 endwin(); 298 } 299 300 static void curses_setup(void) 301 { 302 int i, colour_default[8] = { 303 COLOR_BLACK, COLOR_BLUE, COLOR_GREEN, COLOR_CYAN, 304 COLOR_RED, COLOR_MAGENTA, COLOR_YELLOW, COLOR_WHITE, 305 }; 306 307 /* input as raw as possible, let everything be interpreted 308 * by the guest system */ 309 initscr(); noecho(); intrflush(stdscr, FALSE); 310 nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE); 311 start_color(); raw(); scrollok(stdscr, FALSE); 312 313 for (i = 0; i < 64; i ++) 314 init_pair(i, colour_default[i & 7], colour_default[i >> 3]); 315 } 316 317 static void curses_keyboard_setup(void) 318 { 319 #if defined(__APPLE__) 320 /* always use generic keymaps */ 321 if (!keyboard_layout) 322 keyboard_layout = "en-us"; 323 #endif 324 if(keyboard_layout) { 325 kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout); 326 if (!kbd_layout) 327 exit(1); 328 } 329 } 330 331 static const DisplayChangeListenerOps dcl_ops = { 332 .dpy_name = "curses", 333 .dpy_text_update = curses_update, 334 .dpy_text_resize = curses_resize, 335 .dpy_refresh = curses_refresh, 336 .dpy_text_cursor = curses_cursor_position, 337 }; 338 339 void curses_display_init(DisplayState *ds, int full_screen) 340 { 341 #ifndef _WIN32 342 if (!isatty(1)) { 343 fprintf(stderr, "We need a terminal output\n"); 344 exit(1); 345 } 346 #endif 347 348 curses_setup(); 349 curses_keyboard_setup(); 350 atexit(curses_atexit); 351 352 #ifndef _WIN32 353 #if defined(SIGWINCH) && defined(KEY_RESIZE) 354 /* some curses implementations provide a handler, but we 355 * want to be sure this is handled regardless of the library */ 356 signal(SIGWINCH, curses_winch_handler); 357 #endif 358 #endif 359 360 dcl = (DisplayChangeListener *) g_malloc0(sizeof(DisplayChangeListener)); 361 dcl->ops = &dcl_ops; 362 register_displaychangelistener(dcl); 363 364 invalidate = 1; 365 } 366