monitor: Fix tracepoint crash on JSON syntax error
[qemu/armbru.git] / ui / curses.c
blob59d819fd4dd07b45e33556e00193f3bcbf27cc9e
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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.
24 #include "qemu/osdep.h"
26 #ifndef _WIN32
27 #include <sys/ioctl.h>
28 #include <termios.h>
29 #endif
31 #include "qemu-common.h"
32 #include "ui/console.h"
33 #include "ui/input.h"
34 #include "sysemu/sysemu.h"
36 /* KEY_EVENT is defined in wincon.h and in curses.h. Avoid redefinition. */
37 #undef KEY_EVENT
38 #include <curses.h>
39 #undef KEY_EVENT
41 #define FONT_HEIGHT 16
42 #define FONT_WIDTH 8
44 static DisplayChangeListener *dcl;
45 static console_ch_t screen[160 * 100];
46 static WINDOW *screenpad = NULL;
47 static int width, height, gwidth, gheight, invalidate;
48 static int px, py, sminx, sminy, smaxx, smaxy;
50 static chtype vga_to_curses[256];
52 static void curses_update(DisplayChangeListener *dcl,
53 int x, int y, int w, int h)
55 console_ch_t *line;
56 chtype curses_line[width];
58 line = screen + y * width;
59 for (h += y; y < h; y ++, line += width) {
60 for (x = 0; x < width; x++) {
61 chtype ch = line[x] & 0xff;
62 chtype at = line[x] & ~0xff;
63 if (vga_to_curses[ch]) {
64 ch = vga_to_curses[ch];
66 curses_line[x] = ch | at;
68 mvwaddchnstr(screenpad, y, 0, curses_line, width);
71 pnoutrefresh(screenpad, py, px, sminy, sminx, smaxy - 1, smaxx - 1);
72 refresh();
75 static void curses_calc_pad(void)
77 if (qemu_console_is_fixedsize(NULL)) {
78 width = gwidth;
79 height = gheight;
80 } else {
81 width = COLS;
82 height = LINES;
85 if (screenpad)
86 delwin(screenpad);
88 clear();
89 refresh();
91 screenpad = newpad(height, width);
93 if (width > COLS) {
94 px = (width - COLS) / 2;
95 sminx = 0;
96 smaxx = COLS;
97 } else {
98 px = 0;
99 sminx = (COLS - width) / 2;
100 smaxx = sminx + width;
103 if (height > LINES) {
104 py = (height - LINES) / 2;
105 sminy = 0;
106 smaxy = LINES;
107 } else {
108 py = 0;
109 sminy = (LINES - height) / 2;
110 smaxy = sminy + height;
114 static void curses_resize(DisplayChangeListener *dcl,
115 int width, int height)
117 if (width == gwidth && height == gheight) {
118 return;
121 gwidth = width;
122 gheight = height;
124 curses_calc_pad();
127 #if !defined(_WIN32) && defined(SIGWINCH) && defined(KEY_RESIZE)
128 static volatile sig_atomic_t got_sigwinch;
129 static void curses_winch_check(void)
131 struct winsize {
132 unsigned short ws_row;
133 unsigned short ws_col;
134 unsigned short ws_xpixel; /* unused */
135 unsigned short ws_ypixel; /* unused */
136 } ws;
138 if (!got_sigwinch) {
139 return;
141 got_sigwinch = false;
143 if (ioctl(1, TIOCGWINSZ, &ws) == -1) {
144 return;
147 resize_term(ws.ws_row, ws.ws_col);
148 invalidate = 1;
151 static void curses_winch_handler(int signum)
153 got_sigwinch = true;
156 static void curses_winch_init(void)
158 struct sigaction old, winch = {
159 .sa_handler = curses_winch_handler,
161 sigaction(SIGWINCH, &winch, &old);
163 #else
164 static void curses_winch_check(void) {}
165 static void curses_winch_init(void) {}
166 #endif
168 static void curses_cursor_position(DisplayChangeListener *dcl,
169 int x, int y)
171 if (x >= 0) {
172 x = sminx + x - px;
173 y = sminy + y - py;
175 if (x >= 0 && y >= 0 && x < COLS && y < LINES) {
176 move(y, x);
177 curs_set(1);
178 /* it seems that curs_set(1) must always be called before
179 * curs_set(2) for the latter to have effect */
180 if (!qemu_console_is_graphic(NULL)) {
181 curs_set(2);
183 return;
187 curs_set(0);
190 /* generic keyboard conversion */
192 #include "curses_keys.h"
194 static kbd_layout_t *kbd_layout = NULL;
196 static void curses_refresh(DisplayChangeListener *dcl)
198 int chr, keysym, keycode, keycode_alt;
200 curses_winch_check();
202 if (invalidate) {
203 clear();
204 refresh();
205 curses_calc_pad();
206 graphic_hw_invalidate(NULL);
207 invalidate = 0;
210 graphic_hw_text_update(NULL, screen);
212 while (1) {
213 /* while there are any pending key strokes to process */
214 chr = getch();
216 if (chr == ERR)
217 break;
219 #ifdef KEY_RESIZE
220 /* this shouldn't occur when we use a custom SIGWINCH handler */
221 if (chr == KEY_RESIZE) {
222 clear();
223 refresh();
224 curses_calc_pad();
225 curses_update(dcl, 0, 0, width, height);
226 continue;
228 #endif
230 keycode = curses2keycode[chr];
231 keycode_alt = 0;
233 /* alt key */
234 if (keycode == 1) {
235 int nextchr = getch();
237 if (nextchr != ERR) {
238 chr = nextchr;
239 keycode_alt = ALT;
240 keycode = curses2keycode[chr];
242 if (keycode != -1) {
243 keycode |= ALT;
245 /* process keys reserved for qemu */
246 if (keycode >= QEMU_KEY_CONSOLE0 &&
247 keycode < QEMU_KEY_CONSOLE0 + 9) {
248 erase();
249 wnoutrefresh(stdscr);
250 console_select(keycode - QEMU_KEY_CONSOLE0);
252 invalidate = 1;
253 continue;
259 if (kbd_layout) {
260 keysym = -1;
261 if (chr < CURSES_KEYS)
262 keysym = curses2keysym[chr];
264 if (keysym == -1) {
265 if (chr < ' ') {
266 keysym = chr + '@';
267 if (keysym >= 'A' && keysym <= 'Z')
268 keysym += 'a' - 'A';
269 keysym |= KEYSYM_CNTRL;
270 } else
271 keysym = chr;
274 keycode = keysym2scancode(kbd_layout, keysym & KEYSYM_MASK,
275 false, false, false);
276 if (keycode == 0)
277 continue;
279 keycode |= (keysym & ~KEYSYM_MASK) >> 16;
280 keycode |= keycode_alt;
283 if (keycode == -1)
284 continue;
286 if (qemu_console_is_graphic(NULL)) {
287 /* since terminals don't know about key press and release
288 * events, we need to emit both for each key received */
289 if (keycode & SHIFT) {
290 qemu_input_event_send_key_number(NULL, SHIFT_CODE, true);
291 qemu_input_event_send_key_delay(0);
293 if (keycode & CNTRL) {
294 qemu_input_event_send_key_number(NULL, CNTRL_CODE, true);
295 qemu_input_event_send_key_delay(0);
297 if (keycode & ALT) {
298 qemu_input_event_send_key_number(NULL, ALT_CODE, true);
299 qemu_input_event_send_key_delay(0);
301 if (keycode & ALTGR) {
302 qemu_input_event_send_key_number(NULL, GREY | ALT_CODE, true);
303 qemu_input_event_send_key_delay(0);
306 qemu_input_event_send_key_number(NULL, keycode & KEY_MASK, true);
307 qemu_input_event_send_key_delay(0);
308 qemu_input_event_send_key_number(NULL, keycode & KEY_MASK, false);
309 qemu_input_event_send_key_delay(0);
311 if (keycode & ALTGR) {
312 qemu_input_event_send_key_number(NULL, GREY | ALT_CODE, false);
313 qemu_input_event_send_key_delay(0);
315 if (keycode & ALT) {
316 qemu_input_event_send_key_number(NULL, ALT_CODE, false);
317 qemu_input_event_send_key_delay(0);
319 if (keycode & CNTRL) {
320 qemu_input_event_send_key_number(NULL, CNTRL_CODE, false);
321 qemu_input_event_send_key_delay(0);
323 if (keycode & SHIFT) {
324 qemu_input_event_send_key_number(NULL, SHIFT_CODE, false);
325 qemu_input_event_send_key_delay(0);
327 } else {
328 keysym = -1;
329 if (chr < CURSES_KEYS) {
330 keysym = curses2qemu[chr];
332 if (keysym == -1)
333 keysym = chr;
335 kbd_put_keysym(keysym);
340 static void curses_atexit(void)
342 endwin();
345 static void curses_setup(void)
347 int i, colour_default[8] = {
348 [QEMU_COLOR_BLACK] = COLOR_BLACK,
349 [QEMU_COLOR_BLUE] = COLOR_BLUE,
350 [QEMU_COLOR_GREEN] = COLOR_GREEN,
351 [QEMU_COLOR_CYAN] = COLOR_CYAN,
352 [QEMU_COLOR_RED] = COLOR_RED,
353 [QEMU_COLOR_MAGENTA] = COLOR_MAGENTA,
354 [QEMU_COLOR_YELLOW] = COLOR_YELLOW,
355 [QEMU_COLOR_WHITE] = COLOR_WHITE,
358 /* input as raw as possible, let everything be interpreted
359 * by the guest system */
360 initscr(); noecho(); intrflush(stdscr, FALSE);
361 nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE);
362 start_color(); raw(); scrollok(stdscr, FALSE);
364 /* Make color pair to match color format (3bits bg:3bits fg) */
365 for (i = 0; i < 64; i++) {
366 init_pair(i, colour_default[i & 7], colour_default[i >> 3]);
368 /* Set default color for more than 64 for safety. */
369 for (i = 64; i < COLOR_PAIRS; i++) {
370 init_pair(i, COLOR_WHITE, COLOR_BLACK);
374 * Setup mapping for vga to curses line graphics.
375 * FIXME: for better font, have to use ncursesw and setlocale()
377 #if 0
378 /* FIXME: map from where? */
379 ACS_S1;
380 ACS_S3;
381 ACS_S7;
382 ACS_S9;
383 #endif
384 /* ACS_* is not constant. So, we can't initialize statically. */
385 vga_to_curses['\0'] = ' ';
386 vga_to_curses[0x04] = ACS_DIAMOND;
387 vga_to_curses[0x18] = ACS_UARROW;
388 vga_to_curses[0x19] = ACS_DARROW;
389 vga_to_curses[0x1a] = ACS_RARROW;
390 vga_to_curses[0x1b] = ACS_LARROW;
391 vga_to_curses[0x9c] = ACS_STERLING;
392 vga_to_curses[0xb0] = ACS_BOARD;
393 vga_to_curses[0xb1] = ACS_CKBOARD;
394 vga_to_curses[0xb3] = ACS_VLINE;
395 vga_to_curses[0xb4] = ACS_RTEE;
396 vga_to_curses[0xbf] = ACS_URCORNER;
397 vga_to_curses[0xc0] = ACS_LLCORNER;
398 vga_to_curses[0xc1] = ACS_BTEE;
399 vga_to_curses[0xc2] = ACS_TTEE;
400 vga_to_curses[0xc3] = ACS_LTEE;
401 vga_to_curses[0xc4] = ACS_HLINE;
402 vga_to_curses[0xc5] = ACS_PLUS;
403 vga_to_curses[0xce] = ACS_LANTERN;
404 vga_to_curses[0xd8] = ACS_NEQUAL;
405 vga_to_curses[0xd9] = ACS_LRCORNER;
406 vga_to_curses[0xda] = ACS_ULCORNER;
407 vga_to_curses[0xdb] = ACS_BLOCK;
408 vga_to_curses[0xe3] = ACS_PI;
409 vga_to_curses[0xf1] = ACS_PLMINUS;
410 vga_to_curses[0xf2] = ACS_GEQUAL;
411 vga_to_curses[0xf3] = ACS_LEQUAL;
412 vga_to_curses[0xf8] = ACS_DEGREE;
413 vga_to_curses[0xfe] = ACS_BULLET;
416 static void curses_keyboard_setup(void)
418 #if defined(__APPLE__)
419 /* always use generic keymaps */
420 if (!keyboard_layout)
421 keyboard_layout = "en-us";
422 #endif
423 if(keyboard_layout) {
424 kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
425 if (!kbd_layout)
426 exit(1);
430 static const DisplayChangeListenerOps dcl_ops = {
431 .dpy_name = "curses",
432 .dpy_text_update = curses_update,
433 .dpy_text_resize = curses_resize,
434 .dpy_refresh = curses_refresh,
435 .dpy_text_cursor = curses_cursor_position,
438 static void curses_display_init(DisplayState *ds, DisplayOptions *opts)
440 #ifndef _WIN32
441 if (!isatty(1)) {
442 fprintf(stderr, "We need a terminal output\n");
443 exit(1);
445 #endif
447 curses_setup();
448 curses_keyboard_setup();
449 atexit(curses_atexit);
451 curses_winch_init();
453 dcl = g_new0(DisplayChangeListener, 1);
454 dcl->ops = &dcl_ops;
455 register_displaychangelistener(dcl);
457 invalidate = 1;
460 static QemuDisplay qemu_display_curses = {
461 .type = DISPLAY_TYPE_CURSES,
462 .init = curses_display_init,
465 static void register_curses(void)
467 qemu_display_register(&qemu_display_curses);
470 type_init(register_curses);