summaryrefslogtreecommitdiff
blob: d13a7d7427d75c24e749751f5ee5aa910d6bf4ac (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
/*
 * QEMU curses/ncurses display driver
 * 
 * Copyright (c) 2005 Andrzej Zaborowski  <balrog@zabor.org>
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "qemu-common.h"
#include "console.h"
#include "sysemu.h"

#include <curses.h>

#ifndef _WIN32
#include <signal.h>
#include <sys/ioctl.h>
#include <termios.h>
#endif

#define FONT_HEIGHT 16
#define FONT_WIDTH 8

static console_ch_t screen[160 * 100];
static WINDOW *screenpad = NULL;
static int width, height, gwidth, gheight, invalidate;
static int px, py, sminx, sminy, smaxx, smaxy;

static void curses_update(DisplayState *ds, int x, int y, int w, int h)
{
    chtype *line;

    line = ((chtype *) screen) + y * width;
    for (h += y; y < h; y ++, line += width)
        mvwaddchnstr(screenpad, y, 0, line, width);

    pnoutrefresh(screenpad, py, px, sminy, sminx, smaxy - 1, smaxx - 1);
    refresh();
}

static void curses_calc_pad(void)
{
    if (is_graphic_console()) {
        width = gwidth;
        height = gheight;
    } else {
        width = COLS;
        height = LINES;
    }

    if (screenpad)
        delwin(screenpad);

    clear();
    refresh();

    screenpad = newpad(height, width);

    if (width > COLS) {
        px = (width - COLS) / 2;
        sminx = 0;
        smaxx = COLS;
    } else {
        px = 0;
        sminx = (COLS - width) / 2;
        smaxx = sminx + width;
    }

    if (height > LINES) {
        py = (height - LINES) / 2;
        sminy = 0;
        smaxy = LINES;
    } else {
        py = 0;
        sminy = (LINES - height) / 2;
        smaxy = sminy + height;
    }
}

static void curses_resize(DisplayState *ds, int w, int h)
{
    if (w == gwidth && h == gheight)
        return;

    gwidth = w;
    gheight = h;

    curses_calc_pad();
}

#ifndef _WIN32
#ifdef SIGWINCH
static void curses_winch_handler(int signum)
{
    struct winsize {
        unsigned short ws_row;
        unsigned short ws_col;
        unsigned short ws_xpixel;   /* unused */
        unsigned short ws_ypixel;   /* unused */
    } ws;

    /* terminal size changed */
    if (ioctl(1, TIOCGWINSZ, &ws) == -1)
        return;

    resize_term(ws.ws_row, ws.ws_col);
    curses_calc_pad();
    invalidate = 1;

    /* some systems require this */
    signal(SIGWINCH, curses_winch_handler);
}
#endif
#endif

static void curses_cursor_position(DisplayState *ds, int x, int y)
{
    if (x >= 0) {
        x = sminx + x - px;
        y = sminy + y - py;

        if (x >= 0 && y >= 0 && x < COLS && y < LINES) {
            move(y, x);
            curs_set(1);
            /* it seems that curs_set(1) must always be called before
             * curs_set(2) for the latter to have effect */
            if (!is_graphic_console())
                curs_set(2);
            return;
        }
    }

    curs_set(0);
}

/* generic keyboard conversion */

#include "curses_keys.h"
#include "keymaps.c"

static kbd_layout_t *kbd_layout = 0;
static int keycode2keysym[CURSES_KEYS];

static void curses_refresh(DisplayState *ds)
{
    int chr, nextchr, keysym, keycode;

    if (invalidate) {
        clear();
        refresh();
        curses_calc_pad();
        ds->width = FONT_WIDTH * width;
        ds->height = FONT_HEIGHT * height;
        vga_hw_invalidate();
        invalidate = 0;
    }

    vga_hw_text_update(screen);

    nextchr = ERR;
    while (1) {
        /* while there are any pending key strokes to process */
        if (nextchr == ERR)
            chr = getch();
        else {
            chr = nextchr;
            nextchr = ERR;
        }

        if (chr == ERR)
            break;

        /* this shouldn't occur when we use a custom SIGWINCH handler */
        if (chr == KEY_RESIZE) {
            clear();
            refresh();
            curses_calc_pad();
            curses_update(ds, 0, 0, width, height);
            ds->width = FONT_WIDTH * width;
            ds->height = FONT_HEIGHT * height;
            continue;
        }

        keycode = curses2keycode[chr];
        if (keycode == -1)
            continue;

        /* alt key */
        if (keycode == 1) {
            nextchr = getch();

            if (nextchr != ERR) {
                keycode = curses2keycode[nextchr];
                nextchr = ERR;
                if (keycode == -1)
                    continue;

                keycode |= ALT;

                /* process keys reserved for qemu */
                if (keycode >= QEMU_KEY_CONSOLE0 &&
                        keycode < QEMU_KEY_CONSOLE0 + 9) {
                    erase();
                    wnoutrefresh(stdscr);
                    console_select(keycode - QEMU_KEY_CONSOLE0);

                    invalidate = 1;
                    continue;
                }
            }
        }

        if (kbd_layout && !(keycode & GREY)) {
            keysym = keycode2keysym[keycode & KEY_MASK];
            if (keysym == -1)
                keysym = chr;

            keycode &= ~KEY_MASK;
            keycode |= keysym2scancode(kbd_layout, keysym);
        }

        if (is_graphic_console()) {
            /* since terminals don't know about key press and release
             * events, we need to emit both for each key received */
            if (keycode & SHIFT)
                kbd_put_keycode(SHIFT_CODE);
            if (keycode & CNTRL)
                kbd_put_keycode(CNTRL_CODE);
            if (keycode & ALT)
                kbd_put_keycode(ALT_CODE);
            if (keycode & GREY)
                kbd_put_keycode(GREY_CODE);
            kbd_put_keycode(keycode & KEY_MASK);
            if (keycode & GREY)
                kbd_put_keycode(GREY_CODE);
            kbd_put_keycode((keycode & KEY_MASK) | KEY_RELEASE);
            if (keycode & ALT)
                kbd_put_keycode(ALT_CODE | KEY_RELEASE);
            if (keycode & CNTRL)
                kbd_put_keycode(CNTRL_CODE | KEY_RELEASE);
            if (keycode & SHIFT)
                kbd_put_keycode(SHIFT_CODE | KEY_RELEASE);
        } else {
            keysym = curses2keysym[chr];
            if (keysym == -1)
                keysym = chr;

            kbd_put_keysym(keysym);
        }
    }
}

static void curses_cleanup(void *opaque) 
{
    endwin();
}

static void curses_atexit(void)
{
    curses_cleanup(NULL);
}

static void curses_setup(void)
{
    int i, colour_default[8] = {
        COLOR_BLACK, COLOR_BLUE, COLOR_GREEN, COLOR_CYAN,
        COLOR_RED, COLOR_MAGENTA, COLOR_YELLOW, COLOR_WHITE,
    };

    /* input as raw as possible, let everything be interpreted
     * by the guest system */
    initscr(); noecho(); intrflush(stdscr, FALSE);
    nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE);
    start_color(); raw(); scrollok(stdscr, FALSE);

    for (i = 0; i < 64; i ++)
        init_pair(i, colour_default[i & 7], colour_default[i >> 3]);
}

static void curses_keyboard_setup(void)
{
    int i, keycode, keysym;

#if defined(__APPLE__)
    /* always use generic keymaps */
    if (!keyboard_layout)
        keyboard_layout = "en-us";
#endif
    if(keyboard_layout) {
        kbd_layout = init_keyboard_layout(keyboard_layout);
        if (!kbd_layout)
            exit(1);
    }

    for (i = 0; i < CURSES_KEYS; i ++)
        keycode2keysym[i] = -1;

    for (i = 0; i < CURSES_KEYS; i ++) {
        if (curses2keycode[i] == -1)
            continue;

        keycode = curses2keycode[i] & KEY_MASK;
        if (keycode2keysym[keycode] >= 0)
            continue;

        for (keysym = 0; keysym < CURSES_KEYS; keysym ++)
            if (curses2keycode[keysym] == keycode) {
                keycode2keysym[keycode] = keysym;
                break;
            }

        if (keysym >= CURSES_KEYS)
            keycode2keysym[keycode] = i;
    }
}

void curses_display_init(DisplayState *ds, int full_screen)
{
#ifndef _WIN32
    if (!isatty(1)) {
        fprintf(stderr, "We need a terminal output\n");
        exit(1);
    }
#endif

    curses_setup();
    curses_keyboard_setup();
    atexit(curses_atexit);

#ifndef _WIN32
    signal(SIGINT, SIG_DFL);
    signal(SIGQUIT, SIG_DFL);
#ifdef SIGWINCH
    /* some curses implementations provide a handler, but we
     * want to be sure this is handled regardless of the library */
    signal(SIGWINCH, curses_winch_handler);
#endif
#endif

    ds->data = (void *) screen;
    ds->linesize = 0;
    ds->depth = 0;
    ds->width = 640;
    ds->height = 400;
    ds->dpy_update = curses_update;
    ds->dpy_resize = curses_resize;
    ds->dpy_refresh = curses_refresh;
    ds->dpy_text_cursor = curses_cursor_position;

    invalidate = 1;

    /* Standard VGA initial text mode dimensions */
    curses_resize(ds, 80, 25);
}