[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

#ifdef __OpenBSD__
#define resize_term resizeterm
#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_fixedsize_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
#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
128ab2ff BS	37	#ifdef __OpenBSD__
	38	#define resize_term resizeterm
	39	#endif
	40
4d3b6f6e AZ	41	#define FONT_HEIGHT 16
	42	#define FONT_WIDTH 8
	43
	44	static console_ch_t screen[160 * 100];
	45	static WINDOW *screenpad = NULL;
	46	static int width, height, gwidth, gheight, invalidate;
	47	static int px, py, sminx, sminy, smaxx, smaxy;
	48
	49	static void curses_update(DisplayState *ds, int x, int y, int w, int h)
	50	{
	51	chtype *line;
	52
	53	line = ((chtype ) screen) + y width;
	54	for (h += y; y < h; y ++, line += width)
	55	mvwaddchnstr(screenpad, y, 0, line, width);
	56
	57	pnoutrefresh(screenpad, py, px, sminy, sminx, smaxy - 1, smaxx - 1);
	58	refresh();
	59	}
	60
	61	static void curses_calc_pad(void)
	62	{
c21bbcfa	63	if (is_fixedsize_console()) {
4d3b6f6e AZ	64	width = gwidth;
	65	height = gheight;
	66	} else {
	67	width = COLS;
	68	height = LINES;
	69	}
	70
	71	if (screenpad)
	72	delwin(screenpad);
	73
	74	clear();
	75	refresh();
	76
	77	screenpad = newpad(height, width);
	78
	79	if (width > COLS) {
	80	px = (width - COLS) / 2;
	81	sminx = 0;
	82	smaxx = COLS;
	83	} else {
	84	px = 0;
	85	sminx = (COLS - width) / 2;
	86	smaxx = sminx + width;
	87	}
	88
	89	if (height > LINES) {
	90	py = (height - LINES) / 2;
	91	sminy = 0;
	92	smaxy = LINES;
	93	} else {
	94	py = 0;
	95	sminy = (LINES - height) / 2;
	96	smaxy = sminy + height;
	97	}
	98	}
	99
	100	static void curses_resize(DisplayState *ds, int w, int h)
	101	{
	102	if (w == gwidth && h == gheight)
	103	return;
	104
	105	gwidth = w;
	106	gheight = h;
	107
	108	curses_calc_pad();
	109	}
	110
	111	#ifndef _WIN32
b1314cf9	112	#if defined(SIGWINCH) && defined(KEY_RESIZE)
4d3b6f6e AZ	113	static void curses_winch_handler(int signum)
	114	{
	115	struct winsize {
	116	unsigned short ws_row;
	117	unsigned short ws_col;
	118	unsigned short ws_xpixel; /* unused */
	119	unsigned short ws_ypixel; /* unused */
	120	} ws;
	121
	122	/* terminal size changed */
	123	if (ioctl(1, TIOCGWINSZ, &ws) == -1)
	124	return;
	125
	126	resize_term(ws.ws_row, ws.ws_col);
	127	curses_calc_pad();
	128	invalidate = 1;
	129
	130	/* some systems require this */
	131	signal(SIGWINCH, curses_winch_handler);
	132	}
	133	#endif
	134	#endif
	135
	136	static void curses_cursor_position(DisplayState *ds, int x, int y)
	137	{
	138	if (x >= 0) {
	139	x = sminx + x - px;
	140	y = sminy + y - py;
	141
	142	if (x >= 0 && y >= 0 && x < COLS && y < LINES) {
	143	move(y, x);
	144	curs_set(1);
	145	/* it seems that curs_set(1) must always be called before
	146	* curs_set(2) for the latter to have effect */
	147	if (!is_graphic_console())
	148	curs_set(2);
	149	return;
	150	}
	151	}
	152
	153	curs_set(0);
	154	}
	155
	156	/* generic keyboard conversion */
	157
	158	#include "curses_keys.h"
	159	#include "keymaps.c"
	160
	161	static kbd_layout_t *kbd_layout = 0;
	162	static int keycode2keysym[CURSES_KEYS];
	163
	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->width = FONT_WIDTH * width;
	173	ds->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
b1314cf9	193	#ifdef KEY_RESIZE
4d3b6f6e AZ	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->width = FONT_WIDTH * width;
	201	ds->height = FONT_HEIGHT * height;
	202	continue;
	203	}
b1314cf9	204	#endif
4d3b6f6e AZ	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
275	static void curses_cleanup(void *opaque)
276	{
277	endwin();
278	}
279
280	static void curses_atexit(void)
281	{
282	curses_cleanup(NULL);
283	}
284
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
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(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
339	void curses_display_init(DisplayState *ds, int full_screen)
340	{
341	#ifndef _WIN32
342	if (!isatty(1)) {
343	fprintf(stderr, "We need a terminal output\n");
344	exit(1);
345	}
346	#endif
347
348	curses_setup();
349	curses_keyboard_setup();
350	atexit(curses_atexit);
351
352	#ifndef _WIN32
b1314cf9	353	#if defined(SIGWINCH) && defined(KEY_RESIZE)
4d3b6f6e AZ	354	/* some curses implementations provide a handler, but we
	355	* want to be sure this is handled regardless of the library */
	356	signal(SIGWINCH, curses_winch_handler);
	357	#endif
	358	#endif
	359
	360	ds->data = (void *) screen;
	361	ds->linesize = 0;
	362	ds->depth = 0;
	363	ds->width = 640;
	364	ds->height = 400;
	365	ds->dpy_update = curses_update;
	366	ds->dpy_resize = curses_resize;
	367	ds->dpy_refresh = curses_refresh;
	368	ds->dpy_text_cursor = curses_cursor_position;
	369
	370	invalidate = 1;
	371
	372	/* Standard VGA initial text mode dimensions */
	373	curses_resize(ds, 80, 25);
	374	}