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1.1 root 1: /*
2: * QEMU curses/ncurses display driver
3: *
4: * Copyright (c) 2005 Andrzej Zaborowski <[email protected]>
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: }
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