[qemu.git] / ui / curses.c

/*
 * QEMU curses/ncurses display driver
 * 
 * Copyright (c) 2005 Andrzej Zaborowski  <[email protected]>
 * 
 * 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 <curses.h>

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

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

#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 width, int height)
{
    if (width == gwidth && height == gheight) {
        return;
    }

    gwidth = width;
    gheight = height;

    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"

static kbd_layout_t *kbd_layout = NULL;

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

    if (invalidate) {
        clear();
        refresh();
        curses_calc_pad();
        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);
            continue;
        }
#endif

        keycode = curses2keycode[chr];
        keycode_alt = 0;

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

            if (nextchr != ERR) {
                chr = nextchr;
                keycode_alt = ALT;
                keycode = curses2keycode[nextchr];
                nextchr = ERR;

                if (keycode != -1) {
                    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) {
            keysym = -1;
            if (chr < CURSES_KEYS)
                keysym = curses2keysym[chr];

            if (keysym == -1) {
                if (chr < ' ') {
                    keysym = chr + '@';
                    if (keysym >= 'A' && keysym <= 'Z')
                        keysym += 'a' - 'A';
                    keysym |= KEYSYM_CNTRL;
                } else
                    keysym = chr;
            }

            keycode = keysym2scancode(kbd_layout, keysym & KEYSYM_MASK);
            if (keycode == 0)
                continue;

            keycode |= (keysym & ~KEYSYM_MASK) >> 16;
            keycode |= keycode_alt;
        }

        if (keycode == -1)
            continue;

        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 & ALTGR) {
                kbd_put_keycode(SCANCODE_EMUL0);
                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 & ALTGR) {
                kbd_put_keycode(SCANCODE_EMUL0);
                kbd_put_keycode(ALT_CODE | 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 = curses2qemu[chr];
            if (keysym == -1)
                keysym = chr;

            kbd_put_keysym(keysym);
        }
    }
}

static void curses_atexit(void)
{
    endwin();
}

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)
{
#if defined(__APPLE__)
    /* always use generic keymaps */
    if (!keyboard_layout)
        keyboard_layout = "en-us";
#endif
    if(keyboard_layout) {
        kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
        if (!kbd_layout)
            exit(1);
    }
}

void curses_display_init(DisplayState *ds, int full_screen)
{
    DisplayChangeListener *dcl;
#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

    dcl = (DisplayChangeListener *) g_malloc0(sizeof(DisplayChangeListener));
    dcl->dpy_text_update = curses_update;
    dcl->dpy_text_resize = curses_resize;
    dcl->dpy_refresh = curses_refresh;
    dcl->dpy_text_cursor = curses_cursor_position;
    register_displaychangelistener(ds, dcl);

    invalidate = 1;
}
Commit	Line	Data
4d3b6f6e AZ	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	*/
4d3b6f6e AZ	24	#include <curses.h>
	25
	26	#ifndef _WIN32
4d3b6f6e AZ	27	#include <sys/ioctl.h>
	28	#include <termios.h>
	29	#endif
	30
511d2b14	31	#include "qemu-common.h"
28ecbaee	32	#include "ui/console.h"
9c17d615	33	#include "sysemu/sysemu.h"
511d2b14	34
4d3b6f6e AZ	35	#define FONT_HEIGHT 16
	36	#define FONT_WIDTH 8
	37
c227f099	38	static console_ch_t screen[160 * 100];
4d3b6f6e AZ	39	static WINDOW *screenpad = NULL;
	40	static int width, height, gwidth, gheight, invalidate;
	41	static int px, py, sminx, sminy, smaxx, smaxy;
	42
	43	static void curses_update(DisplayState *ds, int x, int y, int w, int h)
	44	{
	45	chtype *line;
	46
	47	line = ((chtype ) screen) + y width;
	48	for (h += y; y < h; y ++, line += width)
	49	mvwaddchnstr(screenpad, y, 0, line, width);
	50
	51	pnoutrefresh(screenpad, py, px, sminy, sminx, smaxy - 1, smaxx - 1);
	52	refresh();
	53	}
	54
	55	static void curses_calc_pad(void)
	56	{
c21bbcfa	57	if (is_fixedsize_console()) {
4d3b6f6e AZ	58	width = gwidth;
	59	height = gheight;
	60	} else {
	61	width = COLS;
	62	height = LINES;
	63	}
	64
	65	if (screenpad)
	66	delwin(screenpad);
	67
	68	clear();
	69	refresh();
	70
	71	screenpad = newpad(height, width);
	72
	73	if (width > COLS) {
	74	px = (width - COLS) / 2;
	75	sminx = 0;
	76	smaxx = COLS;
	77	} else {
	78	px = 0;
	79	sminx = (COLS - width) / 2;
	80	smaxx = sminx + width;
	81	}
	82
	83	if (height > LINES) {
	84	py = (height - LINES) / 2;
	85	sminy = 0;
	86	smaxy = LINES;
	87	} else {
	88	py = 0;
	89	sminy = (LINES - height) / 2;
	90	smaxy = sminy + height;
	91	}
	92	}
	93
a93a4a22	94	static void curses_resize(DisplayState *ds, int width, int height)
4d3b6f6e	95	{
a93a4a22	96	if (width == gwidth && height == gheight) {
4d3b6f6e	97	return;
a93a4a22	98	}
4d3b6f6e	99
a93a4a22 GH	100	gwidth = width;
a93a4a22 GH	101	gheight = height;
4d3b6f6e AZ	102
	103	curses_calc_pad();
	104	}
	105
	106	#ifndef _WIN32
b1314cf9	107	#if defined(SIGWINCH) && defined(KEY_RESIZE)
4d3b6f6e AZ	108	static void curses_winch_handler(int signum)
	109	{
	110	struct winsize {
	111	unsigned short ws_row;
	112	unsigned short ws_col;
	113	unsigned short ws_xpixel; /* unused */
	114	unsigned short ws_ypixel; /* unused */
	115	} ws;
	116
	117	/* terminal size changed */
	118	if (ioctl(1, TIOCGWINSZ, &ws) == -1)
	119	return;
	120
	121	resize_term(ws.ws_row, ws.ws_col);
	122	curses_calc_pad();
	123	invalidate = 1;
	124
	125	/* some systems require this */
	126	signal(SIGWINCH, curses_winch_handler);
	127	}
	128	#endif
	129	#endif
	130
	131	static void curses_cursor_position(DisplayState *ds, int x, int y)
	132	{
	133	if (x >= 0) {
	134	x = sminx + x - px;
	135	y = sminy + y - py;
	136
	137	if (x >= 0 && y >= 0 && x < COLS && y < LINES) {
	138	move(y, x);
	139	curs_set(1);
	140	/* it seems that curs_set(1) must always be called before
	141	* curs_set(2) for the latter to have effect */
	142	if (!is_graphic_console())
	143	curs_set(2);
	144	return;
	145	}
	146	}
	147
	148	curs_set(0);
	149	}
	150
	151	/* generic keyboard conversion */
	152
	153	#include "curses_keys.h"
4d3b6f6e	154
c227f099	155	static kbd_layout_t *kbd_layout = NULL;
4d3b6f6e AZ	156
	157	static void curses_refresh(DisplayState *ds)
	158	{
44bb61c8	159	int chr, nextchr, keysym, keycode, keycode_alt;
4d3b6f6e AZ	160
	161	if (invalidate) {
	162	clear();
	163	refresh();
	164	curses_calc_pad();
4d3b6f6e AZ	165	vga_hw_invalidate();
	166	invalidate = 0;
	167	}
	168
	169	vga_hw_text_update(screen);
	170
	171	nextchr = ERR;
	172	while (1) {
	173	/* while there are any pending key strokes to process */
	174	if (nextchr == ERR)
	175	chr = getch();
	176	else {
	177	chr = nextchr;
	178	nextchr = ERR;
	179	}
	180
	181	if (chr == ERR)
	182	break;
	183
b1314cf9	184	#ifdef KEY_RESIZE
4d3b6f6e AZ	185	/* this shouldn't occur when we use a custom SIGWINCH handler */
	186	if (chr == KEY_RESIZE) {
	187	clear();
	188	refresh();
	189	curses_calc_pad();
	190	curses_update(ds, 0, 0, width, height);
4d3b6f6e AZ	191	continue;
4d3b6f6e AZ	192	}
b1314cf9	193	#endif
4d3b6f6e AZ	194
4d3b6f6e AZ	195	keycode = curses2keycode[chr];
44bb61c8	196	keycode_alt = 0;
4d3b6f6e AZ	197
	198	/* alt key */
	199	if (keycode == 1) {
	200	nextchr = getch();
	201
	202	if (nextchr != ERR) {
44bb61c8 ST	203	chr = nextchr;
44bb61c8 ST	204	keycode_alt = ALT;
4d3b6f6e AZ	205	keycode = curses2keycode[nextchr];
4d3b6f6e AZ	206	nextchr = ERR;
4d3b6f6e	207
44bb61c8 ST	208	if (keycode != -1) {
44bb61c8 ST	209	keycode \|= ALT;
4d3b6f6e	210
44bb61c8 ST	211	/* process keys reserved for qemu */
	212	if (keycode >= QEMU_KEY_CONSOLE0 &&
	213	keycode < QEMU_KEY_CONSOLE0 + 9) {
	214	erase();
	215	wnoutrefresh(stdscr);
	216	console_select(keycode - QEMU_KEY_CONSOLE0);
4d3b6f6e	217
44bb61c8 ST	218	invalidate = 1;
	219	continue;
	220	}
4d3b6f6e AZ	221	}
	222	}
	223	}
	224
44bb61c8 ST	225	if (kbd_layout) {
	226	keysym = -1;
	227	if (chr < CURSES_KEYS)
	228	keysym = curses2keysym[chr];
	229
	230	if (keysym == -1) {
d03703c8 ST	231	if (chr < ' ') {
	232	keysym = chr + '@';
	233	if (keysym >= 'A' && keysym <= 'Z')
	234	keysym += 'a' - 'A';
	235	keysym \|= KEYSYM_CNTRL;
	236	} else
44bb61c8 ST	237	keysym = chr;
44bb61c8 ST	238	}
4d3b6f6e	239
44bb61c8 ST	240	keycode = keysym2scancode(kbd_layout, keysym & KEYSYM_MASK);
	241	if (keycode == 0)
	242	continue;
	243
	244	keycode \|= (keysym & ~KEYSYM_MASK) >> 16;
	245	keycode \|= keycode_alt;
4d3b6f6e AZ	246	}
4d3b6f6e AZ	247
44bb61c8 ST	248	if (keycode == -1)
	249	continue;
	250
4d3b6f6e AZ	251	if (is_graphic_console()) {
	252	/* since terminals don't know about key press and release
	253	* events, we need to emit both for each key received */
	254	if (keycode & SHIFT)
	255	kbd_put_keycode(SHIFT_CODE);
	256	if (keycode & CNTRL)
	257	kbd_put_keycode(CNTRL_CODE);
	258	if (keycode & ALT)
	259	kbd_put_keycode(ALT_CODE);
44bb61c8 ST	260	if (keycode & ALTGR) {
	261	kbd_put_keycode(SCANCODE_EMUL0);
	262	kbd_put_keycode(ALT_CODE);
	263	}
4d3b6f6e AZ	264	if (keycode & GREY)
	265	kbd_put_keycode(GREY_CODE);
	266	kbd_put_keycode(keycode & KEY_MASK);
	267	if (keycode & GREY)
	268	kbd_put_keycode(GREY_CODE);
	269	kbd_put_keycode((keycode & KEY_MASK) \| KEY_RELEASE);
44bb61c8 ST	270	if (keycode & ALTGR) {
	271	kbd_put_keycode(SCANCODE_EMUL0);
	272	kbd_put_keycode(ALT_CODE \| KEY_RELEASE);
	273	}
4d3b6f6e AZ	274	if (keycode & ALT)
	275	kbd_put_keycode(ALT_CODE \| KEY_RELEASE);
	276	if (keycode & CNTRL)
	277	kbd_put_keycode(CNTRL_CODE \| KEY_RELEASE);
	278	if (keycode & SHIFT)
	279	kbd_put_keycode(SHIFT_CODE \| KEY_RELEASE);
	280	} else {
44bb61c8	281	keysym = curses2qemu[chr];
4d3b6f6e AZ	282	if (keysym == -1)
	283	keysym = chr;
	284
	285	kbd_put_keysym(keysym);
	286	}
	287	}
	288	}
	289
aaf12c25	290	static void curses_atexit(void)
4d3b6f6e AZ	291	{
	292	endwin();
	293	}
	294
4d3b6f6e AZ	295	static void curses_setup(void)
	296	{
	297	int i, colour_default[8] = {
	298	COLOR_BLACK, COLOR_BLUE, COLOR_GREEN, COLOR_CYAN,
	299	COLOR_RED, COLOR_MAGENTA, COLOR_YELLOW, COLOR_WHITE,
	300	};
	301
	302	/* input as raw as possible, let everything be interpreted
	303	* by the guest system */
	304	initscr(); noecho(); intrflush(stdscr, FALSE);
	305	nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE);
	306	start_color(); raw(); scrollok(stdscr, FALSE);
	307
	308	for (i = 0; i < 64; i ++)
	309	init_pair(i, colour_default[i & 7], colour_default[i >> 3]);
	310	}
	311
	312	static void curses_keyboard_setup(void)
	313	{
4d3b6f6e AZ	314	#if defined(__APPLE__)
	315	/* always use generic keymaps */
	316	if (!keyboard_layout)
	317	keyboard_layout = "en-us";
	318	#endif
	319	if(keyboard_layout) {
0483755a	320	kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
4d3b6f6e AZ	321	if (!kbd_layout)
	322	exit(1);
	323	}
4d3b6f6e AZ	324	}
	325
	326	void curses_display_init(DisplayState *ds, int full_screen)
	327	{
7d957bd8	328	DisplayChangeListener *dcl;
4d3b6f6e AZ	329	#ifndef _WIN32
	330	if (!isatty(1)) {
	331	fprintf(stderr, "We need a terminal output\n");
	332	exit(1);
	333	}
	334	#endif
	335
	336	curses_setup();
	337	curses_keyboard_setup();
28695489	338	atexit(curses_atexit);
4d3b6f6e AZ	339
4d3b6f6e AZ	340	#ifndef _WIN32
b1314cf9	341	#if defined(SIGWINCH) && defined(KEY_RESIZE)
4d3b6f6e AZ	342	/* some curses implementations provide a handler, but we
	343	* want to be sure this is handled regardless of the library */
	344	signal(SIGWINCH, curses_winch_handler);
	345	#endif
	346	#endif
	347
7267c094	348	dcl = (DisplayChangeListener *) g_malloc0(sizeof(DisplayChangeListener));
a93a4a22 GH	349	dcl->dpy_text_update = curses_update;
a93a4a22 GH	350	dcl->dpy_text_resize = curses_resize;
7d957bd8 AL	351	dcl->dpy_refresh = curses_refresh;
	352	dcl->dpy_text_cursor = curses_cursor_position;
	353	register_displaychangelistener(ds, dcl);
4d3b6f6e AZ	354
4d3b6f6e AZ	355	invalidate = 1;
4d3b6f6e	356	}