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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 */
e16f4c87 24#include "qemu/osdep.h"
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25
26#ifndef _WIN32
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27#include <sys/ioctl.h>
28#include <termios.h>
29#endif
30
511d2b14 31#include "qemu-common.h"
28ecbaee 32#include "ui/console.h"
cd100328 33#include "ui/input.h"
9c17d615 34#include "sysemu/sysemu.h"
511d2b14 35
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36#define FONT_HEIGHT 16
37#define FONT_WIDTH 8
38
7c20b4a3 39static DisplayChangeListener *dcl;
c227f099 40static console_ch_t screen[160 * 100];
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41static WINDOW *screenpad = NULL;
42static int width, height, gwidth, gheight, invalidate;
43static int px, py, sminx, sminy, smaxx, smaxy;
44
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45chtype vga_to_curses[256];
46
7c20b4a3 47static void curses_update(DisplayChangeListener *dcl,
7c20b4a3 48 int x, int y, int w, int h)
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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
60static void curses_calc_pad(void)
61{
81c0d5a6 62 if (qemu_console_is_fixedsize(NULL)) {
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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
7c20b4a3 99static void curses_resize(DisplayChangeListener *dcl,
7c20b4a3 100 int width, int height)
4d3b6f6e 101{
a93a4a22 102 if (width == gwidth && height == gheight) {
4d3b6f6e 103 return;
a93a4a22 104 }
4d3b6f6e 105
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106 gwidth = width;
107 gheight = height;
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108
109 curses_calc_pad();
110}
111
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112#if !defined(_WIN32) && defined(SIGWINCH) && defined(KEY_RESIZE)
113static volatile sig_atomic_t got_sigwinch;
114static void curses_winch_check(void)
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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
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123 if (!got_sigwinch) {
124 return;
125 }
126 got_sigwinch = false;
127
128 if (ioctl(1, TIOCGWINSZ, &ws) == -1) {
4d3b6f6e 129 return;
032ac6f8 130 }
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131
132 resize_term(ws.ws_row, ws.ws_col);
4d3b6f6e 133 invalidate = 1;
032ac6f8 134}
4d3b6f6e 135
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136static void curses_winch_handler(int signum)
137{
138 got_sigwinch = true;
4d3b6f6e 139}
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140
141static 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
149static void curses_winch_check(void) {}
150static void curses_winch_init(void) {}
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151#endif
152
7c20b4a3 153static void curses_cursor_position(DisplayChangeListener *dcl,
7c20b4a3 154 int x, int y)
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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 */
81c0d5a6 165 if (!qemu_console_is_graphic(NULL)) {
4d3b6f6e 166 curs_set(2);
81c0d5a6 167 }
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168 return;
169 }
170 }
171
172 curs_set(0);
173}
174
175/* generic keyboard conversion */
176
177#include "curses_keys.h"
4d3b6f6e 178
c227f099 179static kbd_layout_t *kbd_layout = NULL;
4d3b6f6e 180
bc2ed970 181static void curses_refresh(DisplayChangeListener *dcl)
4d3b6f6e 182{
99a9ef44 183 int chr, keysym, keycode, keycode_alt;
4d3b6f6e 184
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185 curses_winch_check();
186
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187 if (invalidate) {
188 clear();
189 refresh();
190 curses_calc_pad();
1dbfa005 191 graphic_hw_invalidate(NULL);
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192 invalidate = 0;
193 }
194
1dbfa005 195 graphic_hw_text_update(NULL, screen);
4d3b6f6e 196
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197 while (1) {
198 /* while there are any pending key strokes to process */
99a9ef44 199 chr = getch();
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200
201 if (chr == ERR)
202 break;
203
b1314cf9 204#ifdef KEY_RESIZE
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205 /* this shouldn't occur when we use a custom SIGWINCH handler */
206 if (chr == KEY_RESIZE) {
207 clear();
208 refresh();
209 curses_calc_pad();
bc2ed970 210 curses_update(dcl, 0, 0, width, height);
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211 continue;
212 }
b1314cf9 213#endif
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214
215 keycode = curses2keycode[chr];
44bb61c8 216 keycode_alt = 0;
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217
218 /* alt key */
219 if (keycode == 1) {
99a9ef44 220 int nextchr = getch();
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221
222 if (nextchr != ERR) {
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223 chr = nextchr;
224 keycode_alt = ALT;
99a9ef44 225 keycode = curses2keycode[chr];
4d3b6f6e 226
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227 if (keycode != -1) {
228 keycode |= ALT;
4d3b6f6e 229
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230 /* process keys reserved for qemu */
231 if (keycode >= QEMU_KEY_CONSOLE0 &&
232 keycode < QEMU_KEY_CONSOLE0 + 9) {
233 erase();
234 wnoutrefresh(stdscr);
235 console_select(keycode - QEMU_KEY_CONSOLE0);
4d3b6f6e 236
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237 invalidate = 1;
238 continue;
239 }
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240 }
241 }
242 }
243
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244 if (kbd_layout) {
245 keysym = -1;
246 if (chr < CURSES_KEYS)
247 keysym = curses2keysym[chr];
248
249 if (keysym == -1) {
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250 if (chr < ' ') {
251 keysym = chr + '@';
252 if (keysym >= 'A' && keysym <= 'Z')
253 keysym += 'a' - 'A';
254 keysym |= KEYSYM_CNTRL;
255 } else
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256 keysym = chr;
257 }
4d3b6f6e 258
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259 keycode = keysym2scancode(kbd_layout, keysym & KEYSYM_MASK);
260 if (keycode == 0)
261 continue;
262
263 keycode |= (keysym & ~KEYSYM_MASK) >> 16;
264 keycode |= keycode_alt;
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265 }
266
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267 if (keycode == -1)
268 continue;
269
81c0d5a6 270 if (qemu_console_is_graphic(NULL)) {
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271 /* since terminals don't know about key press and release
272 * events, we need to emit both for each key received */
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273 if (keycode & SHIFT) {
274 qemu_input_event_send_key_number(NULL, SHIFT_CODE, true);
5a165668 275 qemu_input_event_send_key_delay(0);
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276 }
277 if (keycode & CNTRL) {
278 qemu_input_event_send_key_number(NULL, CNTRL_CODE, true);
5a165668 279 qemu_input_event_send_key_delay(0);
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280 }
281 if (keycode & ALT) {
282 qemu_input_event_send_key_number(NULL, ALT_CODE, true);
5a165668 283 qemu_input_event_send_key_delay(0);
cd100328 284 }
44bb61c8 285 if (keycode & ALTGR) {
cd100328 286 qemu_input_event_send_key_number(NULL, GREY | ALT_CODE, true);
5a165668 287 qemu_input_event_send_key_delay(0);
44bb61c8 288 }
cd100328 289
f5c0ab13 290 qemu_input_event_send_key_number(NULL, keycode & KEY_MASK, true);
5a165668 291 qemu_input_event_send_key_delay(0);
f5c0ab13 292 qemu_input_event_send_key_number(NULL, keycode & KEY_MASK, false);
5a165668 293 qemu_input_event_send_key_delay(0);
cd100328 294
44bb61c8 295 if (keycode & ALTGR) {
cd100328 296 qemu_input_event_send_key_number(NULL, GREY | ALT_CODE, false);
5a165668 297 qemu_input_event_send_key_delay(0);
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298 }
299 if (keycode & ALT) {
300 qemu_input_event_send_key_number(NULL, ALT_CODE, false);
5a165668 301 qemu_input_event_send_key_delay(0);
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302 }
303 if (keycode & CNTRL) {
304 qemu_input_event_send_key_number(NULL, CNTRL_CODE, false);
5a165668 305 qemu_input_event_send_key_delay(0);
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306 }
307 if (keycode & SHIFT) {
308 qemu_input_event_send_key_number(NULL, SHIFT_CODE, false);
5a165668 309 qemu_input_event_send_key_delay(0);
44bb61c8 310 }
4d3b6f6e 311 } else {
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312 keysym = -1;
313 if (chr < CURSES_KEYS) {
314 keysym = curses2qemu[chr];
315 }
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316 if (keysym == -1)
317 keysym = chr;
318
319 kbd_put_keysym(keysym);
320 }
321 }
322}
323
aaf12c25 324static void curses_atexit(void)
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325{
326 endwin();
327}
328
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329static void curses_setup(void)
330{
331 int i, colour_default[8] = {
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332 [QEMU_COLOR_BLACK] = COLOR_BLACK,
333 [QEMU_COLOR_BLUE] = COLOR_BLUE,
334 [QEMU_COLOR_GREEN] = COLOR_GREEN,
335 [QEMU_COLOR_CYAN] = COLOR_CYAN,
336 [QEMU_COLOR_RED] = COLOR_RED,
337 [QEMU_COLOR_MAGENTA] = COLOR_MAGENTA,
338 [QEMU_COLOR_YELLOW] = COLOR_YELLOW,
339 [QEMU_COLOR_WHITE] = COLOR_WHITE,
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340 };
341
342 /* input as raw as possible, let everything be interpreted
343 * by the guest system */
344 initscr(); noecho(); intrflush(stdscr, FALSE);
345 nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE);
346 start_color(); raw(); scrollok(stdscr, FALSE);
347
4083733d 348 /* Make color pair to match color format (3bits bg:3bits fg) */
615220dd 349 for (i = 0; i < 64; i++) {
4d3b6f6e 350 init_pair(i, colour_default[i & 7], colour_default[i >> 3]);
615220dd 351 }
4083733d 352 /* Set default color for more than 64 for safety. */
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353 for (i = 64; i < COLOR_PAIRS; i++) {
354 init_pair(i, COLOR_WHITE, COLOR_BLACK);
355 }
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356
357 /*
358 * Setup mapping for vga to curses line graphics.
359 * FIXME: for better font, have to use ncursesw and setlocale()
360 */
361#if 0
362 /* FIXME: map from where? */
363 ACS_S1;
364 ACS_S3;
365 ACS_S7;
366 ACS_S9;
367#endif
368 /* ACS_* is not constant. So, we can't initialize statically. */
369 vga_to_curses['\0'] = ' ';
370 vga_to_curses[0x04] = ACS_DIAMOND;
e2368dc9
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371 vga_to_curses[0x18] = ACS_UARROW;
372 vga_to_curses[0x19] = ACS_DARROW;
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373 vga_to_curses[0x1a] = ACS_RARROW;
374 vga_to_curses[0x1b] = ACS_LARROW;
e2368dc9
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375 vga_to_curses[0x9c] = ACS_STERLING;
376 vga_to_curses[0xb0] = ACS_BOARD;
377 vga_to_curses[0xb1] = ACS_CKBOARD;
378 vga_to_curses[0xb3] = ACS_VLINE;
379 vga_to_curses[0xb4] = ACS_RTEE;
380 vga_to_curses[0xbf] = ACS_URCORNER;
381 vga_to_curses[0xc0] = ACS_LLCORNER;
382 vga_to_curses[0xc1] = ACS_BTEE;
383 vga_to_curses[0xc2] = ACS_TTEE;
384 vga_to_curses[0xc3] = ACS_LTEE;
385 vga_to_curses[0xc4] = ACS_HLINE;
386 vga_to_curses[0xc5] = ACS_PLUS;
387 vga_to_curses[0xce] = ACS_LANTERN;
388 vga_to_curses[0xd8] = ACS_NEQUAL;
389 vga_to_curses[0xd9] = ACS_LRCORNER;
390 vga_to_curses[0xda] = ACS_ULCORNER;
391 vga_to_curses[0xdb] = ACS_BLOCK;
392 vga_to_curses[0xe3] = ACS_PI;
393 vga_to_curses[0xf1] = ACS_PLMINUS;
394 vga_to_curses[0xf2] = ACS_GEQUAL;
395 vga_to_curses[0xf3] = ACS_LEQUAL;
396 vga_to_curses[0xf8] = ACS_DEGREE;
397 vga_to_curses[0xfe] = ACS_BULLET;
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398}
399
400static void curses_keyboard_setup(void)
401{
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402#if defined(__APPLE__)
403 /* always use generic keymaps */
404 if (!keyboard_layout)
405 keyboard_layout = "en-us";
406#endif
407 if(keyboard_layout) {
0483755a 408 kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
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409 if (!kbd_layout)
410 exit(1);
411 }
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412}
413
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414static const DisplayChangeListenerOps dcl_ops = {
415 .dpy_name = "curses",
416 .dpy_text_update = curses_update,
417 .dpy_text_resize = curses_resize,
418 .dpy_refresh = curses_refresh,
419 .dpy_text_cursor = curses_cursor_position,
420};
421
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422void curses_display_init(DisplayState *ds, int full_screen)
423{
424#ifndef _WIN32
425 if (!isatty(1)) {
426 fprintf(stderr, "We need a terminal output\n");
427 exit(1);
428 }
429#endif
430
431 curses_setup();
432 curses_keyboard_setup();
28695489 433 atexit(curses_atexit);
4d3b6f6e 434
032ac6f8 435 curses_winch_init();
4d3b6f6e 436
fedf0d35 437 dcl = g_new0(DisplayChangeListener, 1);
7c20b4a3 438 dcl->ops = &dcl_ops;
5209089f 439 register_displaychangelistener(dcl);
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440
441 invalidate = 1;
4d3b6f6e 442}