mirror of https://github.com/xqemu/xqemu.git
send correctly long key sequences on slow terminals - fixes backspace handling
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2012 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard
parent
be995c2764
commit
e15d737181
128
console.c
128
console.c
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@ -53,6 +53,57 @@ enum TTYState {
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TTY_STATE_CSI,
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};
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typedef struct QEMUFIFO {
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uint8_t *buf;
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int buf_size;
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int count, wptr, rptr;
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} QEMUFIFO;
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int qemu_fifo_write(QEMUFIFO *f, const uint8_t *buf, int len1)
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{
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int l, len;
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l = f->buf_size - f->count;
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if (len1 > l)
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len1 = l;
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len = len1;
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while (len > 0) {
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l = f->buf_size - f->wptr;
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if (l > len)
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l = len;
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memcpy(f->buf + f->wptr, buf, l);
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f->wptr += l;
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if (f->wptr >= f->buf_size)
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f->wptr = 0;
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buf += l;
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len -= l;
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}
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f->count += len1;
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return len1;
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}
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int qemu_fifo_read(QEMUFIFO *f, uint8_t *buf, int len1)
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{
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int l, len;
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if (len1 > f->count)
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len1 = f->count;
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len = len1;
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while (len > 0) {
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l = f->buf_size - f->rptr;
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if (l > len)
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l = len;
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memcpy(buf, f->buf + f->rptr, l);
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f->rptr += l;
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if (f->rptr >= f->buf_size)
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f->rptr = 0;
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buf += l;
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len -= l;
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}
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f->count -= len1;
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return len1;
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}
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/* ??? This is mis-named.
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It is used for both text and graphical consoles. */
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struct TextConsole {
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@ -81,8 +132,13 @@ struct TextConsole {
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int nb_esc_params;
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/* kbd read handler */
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IOCanRWHandler *fd_can_read;
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IOReadHandler *fd_read;
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void *fd_opaque;
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/* fifo for key pressed */
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QEMUFIFO out_fifo;
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uint8_t out_fifo_buf[16];
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QEMUTimer *kbd_timer;
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};
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static TextConsole *active_console;
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@ -712,12 +768,8 @@ static void console_putchar(TextConsole *s, int ch)
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console_put_lf(s);
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break;
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case '\b': /* backspace */
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if(s->x > 0) s->x--;
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y1 = (s->y_base + s->y) % s->total_height;
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c = &s->cells[y1 * s->width + s->x];
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c->ch = ' ';
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c->t_attrib = s->t_attrib;
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update_xy(s, s->x, s->y);
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if (s->x > 0)
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s->x--;
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break;
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case '\t': /* tabspace */
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if (s->x + (8 - (s->x % 8)) > s->width) {
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@ -835,6 +887,7 @@ static void console_chr_add_read_handler(CharDriverState *chr,
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IOReadHandler *fd_read, void *opaque)
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{
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TextConsole *s = chr->opaque;
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s->fd_can_read = fd_can_read;
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s->fd_read = fd_read;
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s->fd_opaque = opaque;
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}
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@ -854,6 +907,28 @@ static void console_send_event(CharDriverState *chr, int event)
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}
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}
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static void kbd_send_chars(void *opaque)
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{
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TextConsole *s = opaque;
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int len;
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uint8_t buf[16];
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len = s->fd_can_read(s->fd_opaque);
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if (len > s->out_fifo.count)
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len = s->out_fifo.count;
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if (len > 0) {
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if (len > sizeof(buf))
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len = sizeof(buf);
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qemu_fifo_read(&s->out_fifo, buf, len);
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s->fd_read(s->fd_opaque, buf, len);
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}
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/* characters are pending: we send them a bit later (XXX:
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horrible, should change char device API) */
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if (s->out_fifo.count > 0) {
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qemu_mod_timer(s->kbd_timer, qemu_get_clock(rt_clock) + 1);
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}
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}
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/* called when an ascii key is pressed */
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void kbd_put_keysym(int keysym)
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{
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@ -879,25 +954,26 @@ void kbd_put_keysym(int keysym)
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console_scroll(10);
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break;
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default:
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if (s->fd_read) {
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/* convert the QEMU keysym to VT100 key string */
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q = buf;
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if (keysym >= 0xe100 && keysym <= 0xe11f) {
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*q++ = '\033';
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*q++ = '[';
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c = keysym - 0xe100;
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if (c >= 10)
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*q++ = '0' + (c / 10);
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*q++ = '0' + (c % 10);
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*q++ = '~';
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} else if (keysym >= 0xe120 && keysym <= 0xe17f) {
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*q++ = '\033';
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*q++ = '[';
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*q++ = keysym & 0xff;
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} else {
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/* convert the QEMU keysym to VT100 key string */
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q = buf;
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if (keysym >= 0xe100 && keysym <= 0xe11f) {
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*q++ = '\033';
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*q++ = '[';
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c = keysym - 0xe100;
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if (c >= 10)
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*q++ = '0' + (c / 10);
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*q++ = '0' + (c % 10);
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*q++ = '~';
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} else if (keysym >= 0xe120 && keysym <= 0xe17f) {
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*q++ = '\033';
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*q++ = '[';
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*q++ = keysym & 0xff;
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} else {
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*q++ = keysym;
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}
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s->fd_read(s->fd_opaque, buf, q - buf);
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}
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if (s->fd_read) {
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qemu_fifo_write(&s->out_fifo, buf, q - buf);
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kbd_send_chars(s);
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}
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break;
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}
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@ -974,6 +1050,10 @@ CharDriverState *text_console_init(DisplayState *ds)
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chr->chr_add_read_handler = console_chr_add_read_handler;
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chr->chr_send_event = console_send_event;
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s->out_fifo.buf = s->out_fifo_buf;
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s->out_fifo.buf_size = sizeof(s->out_fifo_buf);
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s->kbd_timer = qemu_new_timer(rt_clock, kbd_send_chars, s);
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if (!color_inited) {
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color_inited = 1;
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for(j = 0; j < 2; j++) {
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