[qemu.git] / curses.c

/*
 * 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
#if defined(SIGWINCH) && defined(KEY_RESIZE)
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;

#ifdef KEY_RESIZE
        /* 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;
        }
#endif

        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);
#if defined(SIGWINCH) && defined(KEY_RESIZE)
    /* 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);
}
Commit	Line	Data
4d3b6f6e AZ	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
	25	#include "qemu-common.h"
	26	#include "console.h"
	27	#include "sysemu.h"
	28
	29	#include <curses.h>
	30
	31	#ifndef _WIN32
	32	#include <signal.h>
	33	#include <sys/ioctl.h>
	34	#include <termios.h>
	35	#endif
	36
	37	#define FONT_HEIGHT 16
	38	#define FONT_WIDTH 8
	39
	40	static console_ch_t screen[160 * 100];
	41	static WINDOW *screenpad = NULL;
	42	static int width, height, gwidth, gheight, invalidate;
	43	static int px, py, sminx, sminy, smaxx, smaxy;
	44
	45	static void curses_update(DisplayState *ds, int x, int y, int w, int h)
	46	{
	47	chtype *line;
	48
	49	line = ((chtype ) screen) + y width;
	50	for (h += y; y < h; y ++, line += width)
	51	mvwaddchnstr(screenpad, y, 0, line, width);
	52
	53	pnoutrefresh(screenpad, py, px, sminy, sminx, smaxy - 1, smaxx - 1);
	54	refresh();
	55	}
	56
	57	static void curses_calc_pad(void)
	58	{
	59	if (is_graphic_console()) {
	60	width = gwidth;
	61	height = gheight;
	62	} else {
	63	width = COLS;
	64	height = LINES;
65	}
66
67	if (screenpad)
68	delwin(screenpad);
69
70	clear();
71	refresh();
72
73	screenpad = newpad(height, width);
74
75	if (width > COLS) {
76	px = (width - COLS) / 2;
77	sminx = 0;
78	smaxx = COLS;
79	} else {
80	px = 0;
81	sminx = (COLS - width) / 2;
82	smaxx = sminx + width;
83	}
84
85	if (height > LINES) {
86	py = (height - LINES) / 2;
87	sminy = 0;
88	smaxy = LINES;
89	} else {
90	py = 0;
91	sminy = (LINES - height) / 2;
92	smaxy = sminy + height;
93	}
94	}
95
96	static void curses_resize(DisplayState *ds, int w, int h)
97	{
98	if (w == gwidth && h == gheight)
99	return;
100
101	gwidth = w;
102	gheight = h;
103
104	curses_calc_pad();
105	}
106
107	#ifndef _WIN32
b1314cf9	108	#if defined(SIGWINCH) && defined(KEY_RESIZE)
4d3b6f6e AZ	109	static void curses_winch_handler(int signum)
	110	{
	111	struct winsize {
	112	unsigned short ws_row;
	113	unsigned short ws_col;
	114	unsigned short ws_xpixel; /* unused */
	115	unsigned short ws_ypixel; /* unused */
	116	} ws;
	117
	118	/* terminal size changed */
	119	if (ioctl(1, TIOCGWINSZ, &ws) == -1)
	120	return;
	121
	122	resize_term(ws.ws_row, ws.ws_col);
	123	curses_calc_pad();
	124	invalidate = 1;
	125
	126	/* some systems require this */
	127	signal(SIGWINCH, curses_winch_handler);
	128	}
	129	#endif
	130	#endif
	131
	132	static void curses_cursor_position(DisplayState *ds, int x, int y)
	133	{
	134	if (x >= 0) {
	135	x = sminx + x - px;
	136	y = sminy + y - py;
	137
	138	if (x >= 0 && y >= 0 && x < COLS && y < LINES) {
	139	move(y, x);
	140	curs_set(1);
	141	/* it seems that curs_set(1) must always be called before
	142	* curs_set(2) for the latter to have effect */
	143	if (!is_graphic_console())
	144	curs_set(2);
	145	return;
	146	}
	147	}
	148
	149	curs_set(0);
	150	}
	151
	152	/* generic keyboard conversion */
	153
	154	#include "curses_keys.h"
	155	#include "keymaps.c"
	156
	157	static kbd_layout_t *kbd_layout = 0;
	158	static int keycode2keysym[CURSES_KEYS];
	159
	160	static void curses_refresh(DisplayState *ds)
	161	{
	162	int chr, nextchr, keysym, keycode;
	163
	164	if (invalidate) {
	165	clear();
	166	refresh();
	167	curses_calc_pad();
	168	ds->width = FONT_WIDTH * width;
	169	ds->height = FONT_HEIGHT * height;
	170	vga_hw_invalidate();
	171	invalidate = 0;
	172	}
173
174	vga_hw_text_update(screen);
175
176	nextchr = ERR;
177	while (1) {
178	/* while there are any pending key strokes to process */
179	if (nextchr == ERR)
180	chr = getch();
181	else {
182	chr = nextchr;
183	nextchr = ERR;
184	}
185
186	if (chr == ERR)
187	break;
188
b1314cf9	189	#ifdef KEY_RESIZE
4d3b6f6e AZ	190	/* this shouldn't occur when we use a custom SIGWINCH handler */
	191	if (chr == KEY_RESIZE) {
	192	clear();
	193	refresh();
	194	curses_calc_pad();
	195	curses_update(ds, 0, 0, width, height);
	196	ds->width = FONT_WIDTH * width;
	197	ds->height = FONT_HEIGHT * height;
	198	continue;
	199	}
b1314cf9	200	#endif
4d3b6f6e AZ	201
	202	keycode = curses2keycode[chr];
	203	if (keycode == -1)
	204	continue;
	205
	206	/* alt key */
	207	if (keycode == 1) {
	208	nextchr = getch();
	209
	210	if (nextchr != ERR) {
	211	keycode = curses2keycode[nextchr];
	212	nextchr = ERR;
	213	if (keycode == -1)
	214	continue;
	215
	216	keycode \|= ALT;
	217
	218	/* process keys reserved for qemu */
	219	if (keycode >= QEMU_KEY_CONSOLE0 &&
	220	keycode < QEMU_KEY_CONSOLE0 + 9) {
	221	erase();
	222	wnoutrefresh(stdscr);
	223	console_select(keycode - QEMU_KEY_CONSOLE0);
	224
	225	invalidate = 1;
	226	continue;
	227	}
	228	}
	229	}
	230
	231	if (kbd_layout && !(keycode & GREY)) {
	232	keysym = keycode2keysym[keycode & KEY_MASK];
	233	if (keysym == -1)
	234	keysym = chr;
	235
	236	keycode &= ~KEY_MASK;
	237	keycode \|= keysym2scancode(kbd_layout, keysym);
	238	}
	239
	240	if (is_graphic_console()) {
	241	/* since terminals don't know about key press and release
	242	* events, we need to emit both for each key received */
	243	if (keycode & SHIFT)
	244	kbd_put_keycode(SHIFT_CODE);
	245	if (keycode & CNTRL)
	246	kbd_put_keycode(CNTRL_CODE);
	247	if (keycode & ALT)
	248	kbd_put_keycode(ALT_CODE);
	249	if (keycode & GREY)
	250	kbd_put_keycode(GREY_CODE);
	251	kbd_put_keycode(keycode & KEY_MASK);
	252	if (keycode & GREY)
	253	kbd_put_keycode(GREY_CODE);
	254	kbd_put_keycode((keycode & KEY_MASK) \| KEY_RELEASE);
	255	if (keycode & ALT)
	256	kbd_put_keycode(ALT_CODE \| KEY_RELEASE);
	257	if (keycode & CNTRL)
	258	kbd_put_keycode(CNTRL_CODE \| KEY_RELEASE);
	259	if (keycode & SHIFT)
	260	kbd_put_keycode(SHIFT_CODE \| KEY_RELEASE);
	261	} else {
	262	keysym = curses2keysym[chr];
	263	if (keysym == -1)
	264	keysym = chr;
265
266	kbd_put_keysym(keysym);
267	}
268	}
269	}
270
271	static void curses_cleanup(void *opaque)
272	{
273	endwin();
274	}
275
276	static void curses_atexit(void)
277	{
278	curses_cleanup(NULL);
279	}
280
281	static void curses_setup(void)
282	{
283	int i, colour_default[8] = {
284	COLOR_BLACK, COLOR_BLUE, COLOR_GREEN, COLOR_CYAN,
285	COLOR_RED, COLOR_MAGENTA, COLOR_YELLOW, COLOR_WHITE,
286	};
287
288	/* input as raw as possible, let everything be interpreted
289	* by the guest system */
290	initscr(); noecho(); intrflush(stdscr, FALSE);
291	nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE);
292	start_color(); raw(); scrollok(stdscr, FALSE);
293
294	for (i = 0; i < 64; i ++)
295	init_pair(i, colour_default[i & 7], colour_default[i >> 3]);
296	}
297
298	static void curses_keyboard_setup(void)
299	{
300	int i, keycode, keysym;
301
302	#if defined(__APPLE__)
303	/* always use generic keymaps */
304	if (!keyboard_layout)
305	keyboard_layout = "en-us";
306	#endif
307	if(keyboard_layout) {
308	kbd_layout = init_keyboard_layout(keyboard_layout);
309	if (!kbd_layout)
310	exit(1);
311	}
312
313	for (i = 0; i < CURSES_KEYS; i ++)
314	keycode2keysym[i] = -1;
315
316	for (i = 0; i < CURSES_KEYS; i ++) {
317	if (curses2keycode[i] == -1)
318	continue;
319
320	keycode = curses2keycode[i] & KEY_MASK;
321	if (keycode2keysym[keycode] >= 0)
322	continue;
323
324	for (keysym = 0; keysym < CURSES_KEYS; keysym ++)
325	if (curses2keycode[keysym] == keycode) {
326	keycode2keysym[keycode] = keysym;
327	break;
328	}
329
330	if (keysym >= CURSES_KEYS)
331	keycode2keysym[keycode] = i;
332	}
333	}
334
335	void curses_display_init(DisplayState *ds, int full_screen)
336	{
337	#ifndef _WIN32
338	if (!isatty(1)) {
339	fprintf(stderr, "We need a terminal output\n");
340	exit(1);
341	}
342	#endif
343
344	curses_setup();
345	curses_keyboard_setup();
346	atexit(curses_atexit);
347
348	#ifndef _WIN32
349	signal(SIGINT, SIG_DFL);
350	signal(SIGQUIT, SIG_DFL);
b1314cf9	351	#if defined(SIGWINCH) && defined(KEY_RESIZE)
4d3b6f6e AZ	352	/* some curses implementations provide a handler, but we
	353	* want to be sure this is handled regardless of the library */
	354	signal(SIGWINCH, curses_winch_handler);
	355	#endif
	356	#endif
	357
	358	ds->data = (void *) screen;
	359	ds->linesize = 0;
	360	ds->depth = 0;
	361	ds->width = 640;
	362	ds->height = 400;
	363	ds->dpy_update = curses_update;
	364	ds->dpy_resize = curses_resize;
	365	ds->dpy_refresh = curses_refresh;
	366	ds->dpy_text_cursor = curses_cursor_position;
	367
	368	invalidate = 1;
	369
	370	/* Standard VGA initial text mode dimensions */
	371	curses_resize(ds, 80, 25);
	372	}