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 <signal.h> 28 #include <sys/ioctl.h> 29 #include <termios.h> 30 #endif 31 32 #ifdef __OpenBSD__ 33 #define resize_term resizeterm 34 #endif 35 36 #include "qemu-common.h" 37 #include "console.h" 38 #include "sysemu.h" 39 40 #define FONT_HEIGHT 16 41 #define FONT_WIDTH 8 42 43 static console_ch_t screen[160 * 100]; 44 static WINDOW *screenpad = NULL; 45 static int width, height, gwidth, gheight, invalidate; 46 static int px, py, sminx, sminy, smaxx, smaxy; 47 48 static void curses_update(DisplayState *ds, 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 (is_fixedsize_console()) { 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(DisplayState *ds) 100 { 101 if (ds_get_width(ds) == gwidth && ds_get_height(ds) == gheight) 102 return; 103 104 gwidth = ds_get_width(ds); 105 gheight = ds_get_height(ds); 106 107 curses_calc_pad(); 108 ds->surface->width = width * FONT_WIDTH; 109 ds->surface->height = height * FONT_HEIGHT; 110 } 111 112 #ifndef _WIN32 113 #if defined(SIGWINCH) && defined(KEY_RESIZE) 114 static void curses_winch_handler(int signum) 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 /* terminal size changed */ 124 if (ioctl(1, TIOCGWINSZ, &ws) == -1) 125 return; 126 127 resize_term(ws.ws_row, ws.ws_col); 128 curses_calc_pad(); 129 invalidate = 1; 130 131 /* some systems require this */ 132 signal(SIGWINCH, curses_winch_handler); 133 } 134 #endif 135 #endif 136 137 static void curses_cursor_position(DisplayState *ds, int x, int y) 138 { 139 if (x >= 0) { 140 x = sminx + x - px; 141 y = sminy + y - py; 142 143 if (x >= 0 && y >= 0 && x < COLS && y < LINES) { 144 move(y, x); 145 curs_set(1); 146 /* it seems that curs_set(1) must always be called before 147 * curs_set(2) for the latter to have effect */ 148 if (!is_graphic_console()) 149 curs_set(2); 150 return; 151 } 152 } 153 154 curs_set(0); 155 } 156 157 /* generic keyboard conversion */ 158 159 #include "curses_keys.h" 160 161 static kbd_layout_t *kbd_layout = NULL; 162 163 static void curses_refresh(DisplayState *ds) 164 { 165 int chr, nextchr, keysym, keycode, keycode_alt; 166 167 if (invalidate) { 168 clear(); 169 refresh(); 170 curses_calc_pad(); 171 ds->surface->width = FONT_WIDTH * width; 172 ds->surface->height = FONT_HEIGHT * height; 173 vga_hw_invalidate(); 174 invalidate = 0; 175 } 176 177 vga_hw_text_update(screen); 178 179 nextchr = ERR; 180 while (1) { 181 /* while there are any pending key strokes to process */ 182 if (nextchr == ERR) 183 chr = getch(); 184 else { 185 chr = nextchr; 186 nextchr = ERR; 187 } 188 189 if (chr == ERR) 190 break; 191 192 #ifdef KEY_RESIZE 193 /* this shouldn't occur when we use a custom SIGWINCH handler */ 194 if (chr == KEY_RESIZE) { 195 clear(); 196 refresh(); 197 curses_calc_pad(); 198 curses_update(ds, 0, 0, width, height); 199 ds->surface->width = FONT_WIDTH * width; 200 ds->surface->height = FONT_HEIGHT * height; 201 continue; 202 } 203 #endif 204 205 keycode = curses2keycode[chr]; 206 keycode_alt = 0; 207 208 /* alt key */ 209 if (keycode == 1) { 210 nextchr = getch(); 211 212 if (nextchr != ERR) { 213 chr = nextchr; 214 keycode_alt = ALT; 215 keycode = curses2keycode[nextchr]; 216 nextchr = ERR; 217 218 if (keycode != -1) { 219 keycode |= ALT; 220 221 /* process keys reserved for qemu */ 222 if (keycode >= QEMU_KEY_CONSOLE0 && 223 keycode < QEMU_KEY_CONSOLE0 + 9) { 224 erase(); 225 wnoutrefresh(stdscr); 226 console_select(keycode - QEMU_KEY_CONSOLE0); 227 228 invalidate = 1; 229 continue; 230 } 231 } 232 } 233 } 234 235 if (kbd_layout) { 236 keysym = -1; 237 if (chr < CURSES_KEYS) 238 keysym = curses2keysym[chr]; 239 240 if (keysym == -1) { 241 if (chr < ' ') 242 keysym = (chr + '@' - 'A' + 'a') | KEYSYM_CNTRL; 243 else 244 keysym = chr; 245 } 246 247 keycode = keysym2scancode(kbd_layout, keysym & KEYSYM_MASK); 248 if (keycode == 0) 249 continue; 250 251 keycode |= (keysym & ~KEYSYM_MASK) >> 16; 252 keycode |= keycode_alt; 253 } 254 255 if (keycode == -1) 256 continue; 257 258 if (is_graphic_console()) { 259 /* since terminals don't know about key press and release 260 * events, we need to emit both for each key received */ 261 if (keycode & SHIFT) 262 kbd_put_keycode(SHIFT_CODE); 263 if (keycode & CNTRL) 264 kbd_put_keycode(CNTRL_CODE); 265 if (keycode & ALT) 266 kbd_put_keycode(ALT_CODE); 267 if (keycode & ALTGR) { 268 kbd_put_keycode(SCANCODE_EMUL0); 269 kbd_put_keycode(ALT_CODE); 270 } 271 if (keycode & GREY) 272 kbd_put_keycode(GREY_CODE); 273 kbd_put_keycode(keycode & KEY_MASK); 274 if (keycode & GREY) 275 kbd_put_keycode(GREY_CODE); 276 kbd_put_keycode((keycode & KEY_MASK) | KEY_RELEASE); 277 if (keycode & ALTGR) { 278 kbd_put_keycode(SCANCODE_EMUL0); 279 kbd_put_keycode(ALT_CODE | KEY_RELEASE); 280 } 281 if (keycode & ALT) 282 kbd_put_keycode(ALT_CODE | KEY_RELEASE); 283 if (keycode & CNTRL) 284 kbd_put_keycode(CNTRL_CODE | KEY_RELEASE); 285 if (keycode & SHIFT) 286 kbd_put_keycode(SHIFT_CODE | KEY_RELEASE); 287 } else { 288 keysym = curses2qemu[chr]; 289 if (keysym == -1) 290 keysym = chr; 291 292 kbd_put_keysym(keysym); 293 } 294 } 295 } 296 297 static void curses_atexit(void) 298 { 299 endwin(); 300 } 301 302 static void curses_setup(void) 303 { 304 int i, colour_default[8] = { 305 COLOR_BLACK, COLOR_BLUE, COLOR_GREEN, COLOR_CYAN, 306 COLOR_RED, COLOR_MAGENTA, COLOR_YELLOW, COLOR_WHITE, 307 }; 308 309 /* input as raw as possible, let everything be interpreted 310 * by the guest system */ 311 initscr(); noecho(); intrflush(stdscr, FALSE); 312 nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE); 313 start_color(); raw(); scrollok(stdscr, FALSE); 314 315 for (i = 0; i < 64; i ++) 316 init_pair(i, colour_default[i & 7], colour_default[i >> 3]); 317 } 318 319 static void curses_keyboard_setup(void) 320 { 321 #if defined(__APPLE__) 322 /* always use generic keymaps */ 323 if (!keyboard_layout) 324 keyboard_layout = "en-us"; 325 #endif 326 if(keyboard_layout) { 327 kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout); 328 if (!kbd_layout) 329 exit(1); 330 } 331 } 332 333 void curses_display_init(DisplayState *ds, int full_screen) 334 { 335 DisplayChangeListener *dcl; 336 #ifndef _WIN32 337 if (!isatty(1)) { 338 fprintf(stderr, "We need a terminal output\n"); 339 exit(1); 340 } 341 #endif 342 343 curses_setup(); 344 curses_keyboard_setup(); 345 atexit(curses_atexit); 346 347 #ifndef _WIN32 348 #if defined(SIGWINCH) && defined(KEY_RESIZE) 349 /* some curses implementations provide a handler, but we 350 * want to be sure this is handled regardless of the library */ 351 signal(SIGWINCH, curses_winch_handler); 352 #endif 353 #endif 354 355 dcl = (DisplayChangeListener *) qemu_mallocz(sizeof(DisplayChangeListener)); 356 dcl->dpy_update = curses_update; 357 dcl->dpy_resize = curses_resize; 358 dcl->dpy_refresh = curses_refresh; 359 dcl->dpy_text_cursor = curses_cursor_position; 360 register_displaychangelistener(ds, dcl); 361 qemu_free_displaysurface(ds); 362 ds->surface = qemu_create_displaysurface_from(640, 400, 0, 0, (uint8_t*) screen); 363 364 invalidate = 1; 365 } 366