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 "ui/console.h"
38 #include "sysemu/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
curses_update(DisplayState * ds,int x,int y,int w,int h)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
curses_calc_pad(void)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
curses_resize(DisplayState * ds)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)
curses_winch_handler(int signum)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
curses_cursor_position(DisplayState * ds,int x,int y)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 static int keycode2keysym[CURSES_KEYS];
163
curses_refresh(DisplayState * ds)164 static void curses_refresh(DisplayState *ds)
165 {
166 int chr, nextchr, keysym, keycode;
167
168 if (invalidate) {
169 clear();
170 refresh();
171 curses_calc_pad();
172 ds->surface->width = FONT_WIDTH * width;
173 ds->surface->height = FONT_HEIGHT * height;
174 vga_hw_invalidate();
175 invalidate = 0;
176 }
177
178 vga_hw_text_update(screen);
179
180 nextchr = ERR;
181 while (1) {
182 /* while there are any pending key strokes to process */
183 if (nextchr == ERR)
184 chr = getch();
185 else {
186 chr = nextchr;
187 nextchr = ERR;
188 }
189
190 if (chr == ERR)
191 break;
192
193 #ifdef KEY_RESIZE
194 /* this shouldn't occur when we use a custom SIGWINCH handler */
195 if (chr == KEY_RESIZE) {
196 clear();
197 refresh();
198 curses_calc_pad();
199 curses_update(ds, 0, 0, width, height);
200 ds->surface->width = FONT_WIDTH * width;
201 ds->surface->height = FONT_HEIGHT * height;
202 continue;
203 }
204 #endif
205
206 keycode = curses2keycode[chr];
207 if (keycode == -1)
208 continue;
209
210 /* alt key */
211 if (keycode == 1) {
212 nextchr = getch();
213
214 if (nextchr != ERR) {
215 keycode = curses2keycode[nextchr];
216 nextchr = ERR;
217 if (keycode == -1)
218 continue;
219
220 keycode |= ALT;
221
222 /* process keys reserved for qemu */
223 if (keycode >= QEMU_KEY_CONSOLE0 &&
224 keycode < QEMU_KEY_CONSOLE0 + 9) {
225 erase();
226 wnoutrefresh(stdscr);
227 console_select(keycode - QEMU_KEY_CONSOLE0);
228
229 invalidate = 1;
230 continue;
231 }
232 }
233 }
234
235 if (kbd_layout && !(keycode & GREY)) {
236 keysym = keycode2keysym[keycode & KEY_MASK];
237 if (keysym == -1)
238 keysym = chr;
239
240 keycode &= ~KEY_MASK;
241 keycode |= keysym2scancode(kbd_layout, keysym);
242 }
243
244 if (is_graphic_console()) {
245 /* since terminals don't know about key press and release
246 * events, we need to emit both for each key received */
247 if (keycode & SHIFT)
248 kbd_put_keycode(SHIFT_CODE);
249 if (keycode & CNTRL)
250 kbd_put_keycode(CNTRL_CODE);
251 if (keycode & ALT)
252 kbd_put_keycode(ALT_CODE);
253 if (keycode & GREY)
254 kbd_put_keycode(GREY_CODE);
255 kbd_put_keycode(keycode & KEY_MASK);
256 if (keycode & GREY)
257 kbd_put_keycode(GREY_CODE);
258 kbd_put_keycode((keycode & KEY_MASK) | KEY_RELEASE);
259 if (keycode & ALT)
260 kbd_put_keycode(ALT_CODE | KEY_RELEASE);
261 if (keycode & CNTRL)
262 kbd_put_keycode(CNTRL_CODE | KEY_RELEASE);
263 if (keycode & SHIFT)
264 kbd_put_keycode(SHIFT_CODE | KEY_RELEASE);
265 } else {
266 keysym = curses2keysym[chr];
267 if (keysym == -1)
268 keysym = chr;
269
270 kbd_put_keysym(keysym);
271 }
272 }
273 }
274
curses_cleanup(void * opaque)275 static void curses_cleanup(void *opaque)
276 {
277 endwin();
278 }
279
curses_atexit(void)280 static void curses_atexit(void)
281 {
282 curses_cleanup(NULL);
283 }
284
curses_setup(void)285 static void curses_setup(void)
286 {
287 int i, colour_default[8] = {
288 COLOR_BLACK, COLOR_BLUE, COLOR_GREEN, COLOR_CYAN,
289 COLOR_RED, COLOR_MAGENTA, COLOR_YELLOW, COLOR_WHITE,
290 };
291
292 /* input as raw as possible, let everything be interpreted
293 * by the guest system */
294 initscr(); noecho(); intrflush(stdscr, FALSE);
295 nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE);
296 start_color(); raw(); scrollok(stdscr, FALSE);
297
298 for (i = 0; i < 64; i ++)
299 init_pair(i, colour_default[i & 7], colour_default[i >> 3]);
300 }
301
curses_keyboard_setup(void)302 static void curses_keyboard_setup(void)
303 {
304 int i, keycode, keysym;
305
306 #if defined(__APPLE__)
307 /* always use generic keymaps */
308 if (!keyboard_layout)
309 keyboard_layout = "en-us";
310 #endif
311 if(keyboard_layout) {
312 kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
313 if (!kbd_layout)
314 exit(1);
315 }
316
317 for (i = 0; i < CURSES_KEYS; i ++)
318 keycode2keysym[i] = -1;
319
320 for (i = 0; i < CURSES_KEYS; i ++) {
321 if (curses2keycode[i] == -1)
322 continue;
323
324 keycode = curses2keycode[i] & KEY_MASK;
325 if (keycode2keysym[keycode] >= 0)
326 continue;
327
328 for (keysym = 0; keysym < CURSES_KEYS; keysym ++)
329 if (curses2keycode[keysym] == keycode) {
330 keycode2keysym[keycode] = keysym;
331 break;
332 }
333
334 if (keysym >= CURSES_KEYS)
335 keycode2keysym[keycode] = i;
336 }
337 }
338
curses_display_init(DisplayState * ds,int full_screen)339 void curses_display_init(DisplayState *ds, int full_screen)
340 {
341 DisplayChangeListener *dcl;
342 #ifndef _WIN32
343 if (!isatty(1)) {
344 fprintf(stderr, "We need a terminal output\n");
345 exit(1);
346 }
347 #endif
348
349 curses_setup();
350 curses_keyboard_setup();
351 atexit(curses_atexit);
352
353 #ifndef _WIN32
354 #if defined(SIGWINCH) && defined(KEY_RESIZE)
355 /* some curses implementations provide a handler, but we
356 * want to be sure this is handled regardless of the library */
357 signal(SIGWINCH, curses_winch_handler);
358 #endif
359 #endif
360
361 dcl = (DisplayChangeListener *) g_malloc0(sizeof(DisplayChangeListener));
362 dcl->dpy_update = curses_update;
363 dcl->dpy_resize = curses_resize;
364 dcl->dpy_refresh = curses_refresh;
365 dcl->dpy_text_cursor = curses_cursor_position;
366 register_displaychangelistener(ds, dcl);
367 qemu_free_displaysurface(ds);
368 ds->surface = qemu_create_displaysurface_from(640, 400, 0, 0, (uint8_t*) screen);
369
370 invalidate = 1;
371 }
372