Merge remote-tracking branch 'remotes/kraxel/tags/pull-vga-20170103-1' into staging
[qemu.git] / ui / curses.c
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 "qemu/osdep.h"
25 #include <curses.h>
26
27 #ifndef _WIN32
28 #include <sys/ioctl.h>
29 #include <termios.h>
30 #endif
31
32 #include "qemu-common.h"
33 #include "ui/console.h"
34 #include "ui/input.h"
35 #include "sysemu/sysemu.h"
36
37 #define FONT_HEIGHT 16
38 #define FONT_WIDTH 8
39
40 static DisplayChangeListener *dcl;
41 static console_ch_t screen[160 * 100];
42 static WINDOW *screenpad = NULL;
43 static int width, height, gwidth, gheight, invalidate;
44 static int px, py, sminx, sminy, smaxx, smaxy;
45
46 chtype vga_to_curses[256];
47
48 static void curses_update(DisplayChangeListener *dcl,
49 int x, int y, int w, int h)
50 {
51 chtype *line;
52
53 line = ((chtype *) screen) + y * width;
54 for (h += y; y < h; y ++, line += width)
55 mvwaddchnstr(screenpad, y, 0, line, width);
56
57 pnoutrefresh(screenpad, py, px, sminy, sminx, smaxy - 1, smaxx - 1);
58 refresh();
59 }
60
61 static void curses_calc_pad(void)
62 {
63 if (qemu_console_is_fixedsize(NULL)) {
64 width = gwidth;
65 height = gheight;
66 } else {
67 width = COLS;
68 height = LINES;
69 }
70
71 if (screenpad)
72 delwin(screenpad);
73
74 clear();
75 refresh();
76
77 screenpad = newpad(height, width);
78
79 if (width > COLS) {
80 px = (width - COLS) / 2;
81 sminx = 0;
82 smaxx = COLS;
83 } else {
84 px = 0;
85 sminx = (COLS - width) / 2;
86 smaxx = sminx + width;
87 }
88
89 if (height > LINES) {
90 py = (height - LINES) / 2;
91 sminy = 0;
92 smaxy = LINES;
93 } else {
94 py = 0;
95 sminy = (LINES - height) / 2;
96 smaxy = sminy + height;
97 }
98 }
99
100 static void curses_resize(DisplayChangeListener *dcl,
101 int width, int height)
102 {
103 if (width == gwidth && height == gheight) {
104 return;
105 }
106
107 gwidth = width;
108 gheight = height;
109
110 curses_calc_pad();
111 }
112
113 #if !defined(_WIN32) && defined(SIGWINCH) && defined(KEY_RESIZE)
114 static volatile sig_atomic_t got_sigwinch;
115 static void curses_winch_check(void)
116 {
117 struct winsize {
118 unsigned short ws_row;
119 unsigned short ws_col;
120 unsigned short ws_xpixel; /* unused */
121 unsigned short ws_ypixel; /* unused */
122 } ws;
123
124 if (!got_sigwinch) {
125 return;
126 }
127 got_sigwinch = false;
128
129 if (ioctl(1, TIOCGWINSZ, &ws) == -1) {
130 return;
131 }
132
133 resize_term(ws.ws_row, ws.ws_col);
134 invalidate = 1;
135 }
136
137 static void curses_winch_handler(int signum)
138 {
139 got_sigwinch = true;
140 }
141
142 static void curses_winch_init(void)
143 {
144 struct sigaction old, winch = {
145 .sa_handler = curses_winch_handler,
146 };
147 sigaction(SIGWINCH, &winch, &old);
148 }
149 #else
150 static void curses_winch_check(void) {}
151 static void curses_winch_init(void) {}
152 #endif
153
154 static void curses_cursor_position(DisplayChangeListener *dcl,
155 int x, int y)
156 {
157 if (x >= 0) {
158 x = sminx + x - px;
159 y = sminy + y - py;
160
161 if (x >= 0 && y >= 0 && x < COLS && y < LINES) {
162 move(y, x);
163 curs_set(1);
164 /* it seems that curs_set(1) must always be called before
165 * curs_set(2) for the latter to have effect */
166 if (!qemu_console_is_graphic(NULL)) {
167 curs_set(2);
168 }
169 return;
170 }
171 }
172
173 curs_set(0);
174 }
175
176 /* generic keyboard conversion */
177
178 #include "curses_keys.h"
179
180 static kbd_layout_t *kbd_layout = NULL;
181
182 static void curses_refresh(DisplayChangeListener *dcl)
183 {
184 int chr, keysym, keycode, keycode_alt;
185
186 curses_winch_check();
187
188 if (invalidate) {
189 clear();
190 refresh();
191 curses_calc_pad();
192 graphic_hw_invalidate(NULL);
193 invalidate = 0;
194 }
195
196 graphic_hw_text_update(NULL, screen);
197
198 while (1) {
199 /* while there are any pending key strokes to process */
200 chr = getch();
201
202 if (chr == ERR)
203 break;
204
205 #ifdef KEY_RESIZE
206 /* this shouldn't occur when we use a custom SIGWINCH handler */
207 if (chr == KEY_RESIZE) {
208 clear();
209 refresh();
210 curses_calc_pad();
211 curses_update(dcl, 0, 0, width, height);
212 continue;
213 }
214 #endif
215
216 keycode = curses2keycode[chr];
217 keycode_alt = 0;
218
219 /* alt key */
220 if (keycode == 1) {
221 int nextchr = getch();
222
223 if (nextchr != ERR) {
224 chr = nextchr;
225 keycode_alt = ALT;
226 keycode = curses2keycode[chr];
227
228 if (keycode != -1) {
229 keycode |= ALT;
230
231 /* process keys reserved for qemu */
232 if (keycode >= QEMU_KEY_CONSOLE0 &&
233 keycode < QEMU_KEY_CONSOLE0 + 9) {
234 erase();
235 wnoutrefresh(stdscr);
236 console_select(keycode - QEMU_KEY_CONSOLE0);
237
238 invalidate = 1;
239 continue;
240 }
241 }
242 }
243 }
244
245 if (kbd_layout) {
246 keysym = -1;
247 if (chr < CURSES_KEYS)
248 keysym = curses2keysym[chr];
249
250 if (keysym == -1) {
251 if (chr < ' ') {
252 keysym = chr + '@';
253 if (keysym >= 'A' && keysym <= 'Z')
254 keysym += 'a' - 'A';
255 keysym |= KEYSYM_CNTRL;
256 } else
257 keysym = chr;
258 }
259
260 keycode = keysym2scancode(kbd_layout, keysym & KEYSYM_MASK);
261 if (keycode == 0)
262 continue;
263
264 keycode |= (keysym & ~KEYSYM_MASK) >> 16;
265 keycode |= keycode_alt;
266 }
267
268 if (keycode == -1)
269 continue;
270
271 if (qemu_console_is_graphic(NULL)) {
272 /* since terminals don't know about key press and release
273 * events, we need to emit both for each key received */
274 if (keycode & SHIFT) {
275 qemu_input_event_send_key_number(NULL, SHIFT_CODE, true);
276 qemu_input_event_send_key_delay(0);
277 }
278 if (keycode & CNTRL) {
279 qemu_input_event_send_key_number(NULL, CNTRL_CODE, true);
280 qemu_input_event_send_key_delay(0);
281 }
282 if (keycode & ALT) {
283 qemu_input_event_send_key_number(NULL, ALT_CODE, true);
284 qemu_input_event_send_key_delay(0);
285 }
286 if (keycode & ALTGR) {
287 qemu_input_event_send_key_number(NULL, GREY | ALT_CODE, true);
288 qemu_input_event_send_key_delay(0);
289 }
290
291 qemu_input_event_send_key_number(NULL, keycode & KEY_MASK, true);
292 qemu_input_event_send_key_delay(0);
293 qemu_input_event_send_key_number(NULL, keycode & KEY_MASK, false);
294 qemu_input_event_send_key_delay(0);
295
296 if (keycode & ALTGR) {
297 qemu_input_event_send_key_number(NULL, GREY | ALT_CODE, false);
298 qemu_input_event_send_key_delay(0);
299 }
300 if (keycode & ALT) {
301 qemu_input_event_send_key_number(NULL, ALT_CODE, false);
302 qemu_input_event_send_key_delay(0);
303 }
304 if (keycode & CNTRL) {
305 qemu_input_event_send_key_number(NULL, CNTRL_CODE, false);
306 qemu_input_event_send_key_delay(0);
307 }
308 if (keycode & SHIFT) {
309 qemu_input_event_send_key_number(NULL, SHIFT_CODE, false);
310 qemu_input_event_send_key_delay(0);
311 }
312 } else {
313 keysym = -1;
314 if (chr < CURSES_KEYS) {
315 keysym = curses2qemu[chr];
316 }
317 if (keysym == -1)
318 keysym = chr;
319
320 kbd_put_keysym(keysym);
321 }
322 }
323 }
324
325 static void curses_atexit(void)
326 {
327 endwin();
328 }
329
330 static void curses_setup(void)
331 {
332 int i, colour_default[8] = {
333 [QEMU_COLOR_BLACK] = COLOR_BLACK,
334 [QEMU_COLOR_BLUE] = COLOR_BLUE,
335 [QEMU_COLOR_GREEN] = COLOR_GREEN,
336 [QEMU_COLOR_CYAN] = COLOR_CYAN,
337 [QEMU_COLOR_RED] = COLOR_RED,
338 [QEMU_COLOR_MAGENTA] = COLOR_MAGENTA,
339 [QEMU_COLOR_YELLOW] = COLOR_YELLOW,
340 [QEMU_COLOR_WHITE] = COLOR_WHITE,
341 };
342
343 /* input as raw as possible, let everything be interpreted
344 * by the guest system */
345 initscr(); noecho(); intrflush(stdscr, FALSE);
346 nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE);
347 start_color(); raw(); scrollok(stdscr, FALSE);
348
349 /* Make color pair to match color format (3bits bg:3bits fg) */
350 for (i = 0; i < 64; i++) {
351 init_pair(i, colour_default[i & 7], colour_default[i >> 3]);
352 }
353 /* Set default color for more than 64 for safety. */
354 for (i = 64; i < COLOR_PAIRS; i++) {
355 init_pair(i, COLOR_WHITE, COLOR_BLACK);
356 }
357
358 /*
359 * Setup mapping for vga to curses line graphics.
360 * FIXME: for better font, have to use ncursesw and setlocale()
361 */
362 #if 0
363 /* FIXME: map from where? */
364 ACS_S1;
365 ACS_S3;
366 ACS_S7;
367 ACS_S9;
368 #endif
369 /* ACS_* is not constant. So, we can't initialize statically. */
370 vga_to_curses['\0'] = ' ';
371 vga_to_curses[0x04] = ACS_DIAMOND;
372 vga_to_curses[0x18] = ACS_UARROW;
373 vga_to_curses[0x19] = ACS_DARROW;
374 vga_to_curses[0x1a] = ACS_RARROW;
375 vga_to_curses[0x1b] = ACS_LARROW;
376 vga_to_curses[0x9c] = ACS_STERLING;
377 vga_to_curses[0xb0] = ACS_BOARD;
378 vga_to_curses[0xb1] = ACS_CKBOARD;
379 vga_to_curses[0xb3] = ACS_VLINE;
380 vga_to_curses[0xb4] = ACS_RTEE;
381 vga_to_curses[0xbf] = ACS_URCORNER;
382 vga_to_curses[0xc0] = ACS_LLCORNER;
383 vga_to_curses[0xc1] = ACS_BTEE;
384 vga_to_curses[0xc2] = ACS_TTEE;
385 vga_to_curses[0xc3] = ACS_LTEE;
386 vga_to_curses[0xc4] = ACS_HLINE;
387 vga_to_curses[0xc5] = ACS_PLUS;
388 vga_to_curses[0xce] = ACS_LANTERN;
389 vga_to_curses[0xd8] = ACS_NEQUAL;
390 vga_to_curses[0xd9] = ACS_LRCORNER;
391 vga_to_curses[0xda] = ACS_ULCORNER;
392 vga_to_curses[0xdb] = ACS_BLOCK;
393 vga_to_curses[0xe3] = ACS_PI;
394 vga_to_curses[0xf1] = ACS_PLMINUS;
395 vga_to_curses[0xf2] = ACS_GEQUAL;
396 vga_to_curses[0xf3] = ACS_LEQUAL;
397 vga_to_curses[0xf8] = ACS_DEGREE;
398 vga_to_curses[0xfe] = ACS_BULLET;
399 }
400
401 static void curses_keyboard_setup(void)
402 {
403 #if defined(__APPLE__)
404 /* always use generic keymaps */
405 if (!keyboard_layout)
406 keyboard_layout = "en-us";
407 #endif
408 if(keyboard_layout) {
409 kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
410 if (!kbd_layout)
411 exit(1);
412 }
413 }
414
415 static const DisplayChangeListenerOps dcl_ops = {
416 .dpy_name = "curses",
417 .dpy_text_update = curses_update,
418 .dpy_text_resize = curses_resize,
419 .dpy_refresh = curses_refresh,
420 .dpy_text_cursor = curses_cursor_position,
421 };
422
423 void curses_display_init(DisplayState *ds, int full_screen)
424 {
425 #ifndef _WIN32
426 if (!isatty(1)) {
427 fprintf(stderr, "We need a terminal output\n");
428 exit(1);
429 }
430 #endif
431
432 curses_setup();
433 curses_keyboard_setup();
434 atexit(curses_atexit);
435
436 curses_winch_init();
437
438 dcl = g_new0(DisplayChangeListener, 1);
439 dcl->ops = &dcl_ops;
440 register_displaychangelistener(dcl);
441
442 invalidate = 1;
443 }