[mirror_qemu.git] / ui / 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 <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 DisplayChangeListener *dcl;
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(DisplayChangeListener *dcl,
                          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(DisplayChangeListener *dcl,
                          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(DisplayChangeListener *dcl,
                                   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(DisplayChangeListener *dcl)
{
    int chr, nextchr, keysym, keycode, keycode_alt;

    if (invalidate) {
        clear();
        refresh();
        curses_calc_pad();
        graphic_hw_invalidate(NULL);
        invalidate = 0;
    }

    graphic_hw_text_update(NULL, 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(dcl, 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);
    }
}

static const DisplayChangeListenerOps dcl_ops = {
    .dpy_name        = "curses",
    .dpy_text_update = curses_update,
    .dpy_text_resize = curses_resize,
    .dpy_refresh     = curses_refresh,
    .dpy_text_cursor = curses_cursor_position,
};

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

    dcl = (DisplayChangeListener *) g_malloc0(sizeof(DisplayChangeListener));
    dcl->ops = &dcl_ops;
    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 <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	*/
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
7c20b4a3	38	static DisplayChangeListener *dcl;
c227f099	39	static console_ch_t screen[160 * 100];
4d3b6f6e AZ	40	static WINDOW *screenpad = NULL;
	41	static int width, height, gwidth, gheight, invalidate;
	42	static int px, py, sminx, sminy, smaxx, smaxy;
	43
7c20b4a3	44	static void curses_update(DisplayChangeListener *dcl,
7c20b4a3	45	int x, int y, int w, int h)
4d3b6f6e AZ	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	{
c21bbcfa	59	if (is_fixedsize_console()) {
4d3b6f6e AZ	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
7c20b4a3	96	static void curses_resize(DisplayChangeListener *dcl,
7c20b4a3	97	int width, int height)
4d3b6f6e	98	{
a93a4a22	99	if (width == gwidth && height == gheight) {
4d3b6f6e	100	return;
a93a4a22	101	}
4d3b6f6e	102
a93a4a22 GH	103	gwidth = width;
a93a4a22 GH	104	gheight = height;
4d3b6f6e AZ	105
	106	curses_calc_pad();
	107	}
	108
	109	#ifndef _WIN32
b1314cf9	110	#if defined(SIGWINCH) && defined(KEY_RESIZE)
4d3b6f6e AZ	111	static void curses_winch_handler(int signum)
	112	{
	113	struct winsize {
	114	unsigned short ws_row;
	115	unsigned short ws_col;
	116	unsigned short ws_xpixel; /* unused */
	117	unsigned short ws_ypixel; /* unused */
	118	} ws;
	119
	120	/* terminal size changed */
	121	if (ioctl(1, TIOCGWINSZ, &ws) == -1)
	122	return;
	123
	124	resize_term(ws.ws_row, ws.ws_col);
	125	curses_calc_pad();
	126	invalidate = 1;
	127
	128	/* some systems require this */
	129	signal(SIGWINCH, curses_winch_handler);
	130	}
	131	#endif
	132	#endif
	133
7c20b4a3	134	static void curses_cursor_position(DisplayChangeListener *dcl,
7c20b4a3	135	int x, int y)
4d3b6f6e AZ	136	{
	137	if (x >= 0) {
	138	x = sminx + x - px;
	139	y = sminy + y - py;
	140
	141	if (x >= 0 && y >= 0 && x < COLS && y < LINES) {
	142	move(y, x);
	143	curs_set(1);
	144	/* it seems that curs_set(1) must always be called before
	145	* curs_set(2) for the latter to have effect */
	146	if (!is_graphic_console())
	147	curs_set(2);
	148	return;
	149	}
	150	}
	151
	152	curs_set(0);
	153	}
	154
	155	/* generic keyboard conversion */
	156
	157	#include "curses_keys.h"
4d3b6f6e	158
c227f099	159	static kbd_layout_t *kbd_layout = NULL;
4d3b6f6e	160
bc2ed970	161	static void curses_refresh(DisplayChangeListener *dcl)
4d3b6f6e	162	{
44bb61c8	163	int chr, nextchr, keysym, keycode, keycode_alt;
4d3b6f6e AZ	164
	165	if (invalidate) {
	166	clear();
	167	refresh();
	168	curses_calc_pad();
1dbfa005	169	graphic_hw_invalidate(NULL);
4d3b6f6e AZ	170	invalidate = 0;
	171	}
	172
1dbfa005	173	graphic_hw_text_update(NULL, screen);
4d3b6f6e AZ	174
	175	nextchr = ERR;
	176	while (1) {
	177	/* while there are any pending key strokes to process */
	178	if (nextchr == ERR)
	179	chr = getch();
	180	else {
	181	chr = nextchr;
	182	nextchr = ERR;
	183	}
	184
	185	if (chr == ERR)
	186	break;
	187
b1314cf9	188	#ifdef KEY_RESIZE
4d3b6f6e AZ	189	/* this shouldn't occur when we use a custom SIGWINCH handler */
	190	if (chr == KEY_RESIZE) {
	191	clear();
	192	refresh();
	193	curses_calc_pad();
bc2ed970	194	curses_update(dcl, 0, 0, width, height);
4d3b6f6e AZ	195	continue;
4d3b6f6e AZ	196	}
b1314cf9	197	#endif
4d3b6f6e AZ	198
4d3b6f6e AZ	199	keycode = curses2keycode[chr];
44bb61c8	200	keycode_alt = 0;
4d3b6f6e AZ	201
	202	/* alt key */
	203	if (keycode == 1) {
	204	nextchr = getch();
	205
	206	if (nextchr != ERR) {
44bb61c8 ST	207	chr = nextchr;
44bb61c8 ST	208	keycode_alt = ALT;
4d3b6f6e AZ	209	keycode = curses2keycode[nextchr];
4d3b6f6e AZ	210	nextchr = ERR;
4d3b6f6e	211
44bb61c8 ST	212	if (keycode != -1) {
44bb61c8 ST	213	keycode \|= ALT;
4d3b6f6e	214
44bb61c8 ST	215	/* process keys reserved for qemu */
	216	if (keycode >= QEMU_KEY_CONSOLE0 &&
	217	keycode < QEMU_KEY_CONSOLE0 + 9) {
	218	erase();
	219	wnoutrefresh(stdscr);
	220	console_select(keycode - QEMU_KEY_CONSOLE0);
4d3b6f6e	221
44bb61c8 ST	222	invalidate = 1;
	223	continue;
	224	}
4d3b6f6e AZ	225	}
	226	}
	227	}
	228
44bb61c8 ST	229	if (kbd_layout) {
	230	keysym = -1;
	231	if (chr < CURSES_KEYS)
	232	keysym = curses2keysym[chr];
	233
	234	if (keysym == -1) {
d03703c8 ST	235	if (chr < ' ') {
	236	keysym = chr + '@';
	237	if (keysym >= 'A' && keysym <= 'Z')
	238	keysym += 'a' - 'A';
	239	keysym \|= KEYSYM_CNTRL;
	240	} else
44bb61c8 ST	241	keysym = chr;
44bb61c8 ST	242	}
4d3b6f6e	243
44bb61c8 ST	244	keycode = keysym2scancode(kbd_layout, keysym & KEYSYM_MASK);
	245	if (keycode == 0)
	246	continue;
	247
	248	keycode \|= (keysym & ~KEYSYM_MASK) >> 16;
	249	keycode \|= keycode_alt;
4d3b6f6e AZ	250	}
4d3b6f6e AZ	251
44bb61c8 ST	252	if (keycode == -1)
	253	continue;
	254
4d3b6f6e AZ	255	if (is_graphic_console()) {
	256	/* since terminals don't know about key press and release
	257	* events, we need to emit both for each key received */
	258	if (keycode & SHIFT)
	259	kbd_put_keycode(SHIFT_CODE);
	260	if (keycode & CNTRL)
	261	kbd_put_keycode(CNTRL_CODE);
	262	if (keycode & ALT)
	263	kbd_put_keycode(ALT_CODE);
44bb61c8 ST	264	if (keycode & ALTGR) {
	265	kbd_put_keycode(SCANCODE_EMUL0);
	266	kbd_put_keycode(ALT_CODE);
	267	}
4d3b6f6e AZ	268	if (keycode & GREY)
	269	kbd_put_keycode(GREY_CODE);
	270	kbd_put_keycode(keycode & KEY_MASK);
	271	if (keycode & GREY)
	272	kbd_put_keycode(GREY_CODE);
	273	kbd_put_keycode((keycode & KEY_MASK) \| KEY_RELEASE);
44bb61c8 ST	274	if (keycode & ALTGR) {
	275	kbd_put_keycode(SCANCODE_EMUL0);
	276	kbd_put_keycode(ALT_CODE \| KEY_RELEASE);
	277	}
4d3b6f6e AZ	278	if (keycode & ALT)
	279	kbd_put_keycode(ALT_CODE \| KEY_RELEASE);
	280	if (keycode & CNTRL)
	281	kbd_put_keycode(CNTRL_CODE \| KEY_RELEASE);
	282	if (keycode & SHIFT)
	283	kbd_put_keycode(SHIFT_CODE \| KEY_RELEASE);
	284	} else {
44bb61c8	285	keysym = curses2qemu[chr];
4d3b6f6e AZ	286	if (keysym == -1)
	287	keysym = chr;
	288
	289	kbd_put_keysym(keysym);
	290	}
	291	}
	292	}
	293
aaf12c25	294	static void curses_atexit(void)
4d3b6f6e AZ	295	{
	296	endwin();
	297	}
	298
4d3b6f6e AZ	299	static void curses_setup(void)
	300	{
	301	int i, colour_default[8] = {
	302	COLOR_BLACK, COLOR_BLUE, COLOR_GREEN, COLOR_CYAN,
	303	COLOR_RED, COLOR_MAGENTA, COLOR_YELLOW, COLOR_WHITE,
	304	};
	305
	306	/* input as raw as possible, let everything be interpreted
	307	* by the guest system */
	308	initscr(); noecho(); intrflush(stdscr, FALSE);
	309	nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE);
	310	start_color(); raw(); scrollok(stdscr, FALSE);
	311
	312	for (i = 0; i < 64; i ++)
	313	init_pair(i, colour_default[i & 7], colour_default[i >> 3]);
	314	}
	315
	316	static void curses_keyboard_setup(void)
	317	{
4d3b6f6e AZ	318	#if defined(__APPLE__)
	319	/* always use generic keymaps */
	320	if (!keyboard_layout)
	321	keyboard_layout = "en-us";
	322	#endif
	323	if(keyboard_layout) {
0483755a	324	kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
4d3b6f6e AZ	325	if (!kbd_layout)
	326	exit(1);
	327	}
4d3b6f6e AZ	328	}
4d3b6f6e AZ	329
7c20b4a3 GH	330	static const DisplayChangeListenerOps dcl_ops = {
	331	.dpy_name = "curses",
	332	.dpy_text_update = curses_update,
	333	.dpy_text_resize = curses_resize,
	334	.dpy_refresh = curses_refresh,
	335	.dpy_text_cursor = curses_cursor_position,
	336	};
	337
4d3b6f6e AZ	338	void curses_display_init(DisplayState *ds, int full_screen)
	339	{
	340	#ifndef _WIN32
	341	if (!isatty(1)) {
	342	fprintf(stderr, "We need a terminal output\n");
	343	exit(1);
	344	}
	345	#endif
	346
	347	curses_setup();
	348	curses_keyboard_setup();
28695489	349	atexit(curses_atexit);
4d3b6f6e AZ	350
4d3b6f6e AZ	351	#ifndef _WIN32
b1314cf9	352	#if defined(SIGWINCH) && defined(KEY_RESIZE)
4d3b6f6e AZ	353	/* some curses implementations provide a handler, but we
	354	* want to be sure this is handled regardless of the library */
	355	signal(SIGWINCH, curses_winch_handler);
	356	#endif
	357	#endif
	358
7267c094	359	dcl = (DisplayChangeListener *) g_malloc0(sizeof(DisplayChangeListener));
7c20b4a3	360	dcl->ops = &dcl_ops;
7d957bd8	361	register_displaychangelistener(ds, dcl);
4d3b6f6e AZ	362
4d3b6f6e AZ	363	invalidate = 1;
4d3b6f6e	364	}