mirror of
https://github.com/tmux/tmux.git
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1566 lines
35 KiB
C
1566 lines
35 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <stdlib.h>
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#include <string.h>
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#include "tmux.h"
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static void screen_write_initctx(struct screen_write_ctx *,
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struct tty_ctx *);
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static void screen_write_collect_clear(struct screen_write_ctx *, u_int,
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u_int);
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static void screen_write_collect_scroll(struct screen_write_ctx *);
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static void screen_write_collect_flush(struct screen_write_ctx *, int);
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static int screen_write_overwrite(struct screen_write_ctx *,
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struct grid_cell *, u_int);
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static const struct grid_cell *screen_write_combine(struct screen_write_ctx *,
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const struct utf8_data *, u_int *);
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static const struct grid_cell screen_write_pad_cell = {
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GRID_FLAG_PADDING, 0, 8, 8, { { 0 }, 0, 0, 0 }
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};
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struct screen_write_collect_item {
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u_int x;
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int wrapped;
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u_int used;
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char data[256];
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struct grid_cell gc;
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TAILQ_ENTRY(screen_write_collect_item) entry;
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};
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struct screen_write_collect_line {
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TAILQ_HEAD(, screen_write_collect_item) items;
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};
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/* Initialize writing with a window. */
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void
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screen_write_start(struct screen_write_ctx *ctx, struct window_pane *wp,
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struct screen *s)
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{
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char tmp[16];
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u_int y;
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memset(ctx, 0, sizeof *ctx);
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ctx->wp = wp;
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if (wp != NULL && s == NULL)
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ctx->s = wp->screen;
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else
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ctx->s = s;
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ctx->list = xcalloc(screen_size_y(ctx->s), sizeof *ctx->list);
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for (y = 0; y < screen_size_y(ctx->s); y++)
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TAILQ_INIT(&ctx->list[y].items);
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ctx->item = xcalloc(1, sizeof *ctx->item);
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ctx->scrolled = 0;
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ctx->bg = 8;
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if (wp != NULL)
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snprintf(tmp, sizeof tmp, "pane %%%u", wp->id);
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log_debug("%s: size %ux%u, %s", __func__, screen_size_x(ctx->s),
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screen_size_y(ctx->s), wp == NULL ? "no pane" : tmp);
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}
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/* Finish writing. */
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void
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screen_write_stop(struct screen_write_ctx *ctx)
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{
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screen_write_collect_end(ctx);
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screen_write_collect_flush(ctx, 0);
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log_debug("%s: %u cells (%u written, %u skipped)", __func__,
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ctx->cells, ctx->written, ctx->skipped);
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free(ctx->item);
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free(ctx->list); /* flush will have emptied */
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}
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/* Reset screen state. */
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void
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screen_write_reset(struct screen_write_ctx *ctx)
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{
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struct screen *s = ctx->s;
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screen_reset_tabs(s);
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screen_write_scrollregion(ctx, 0, screen_size_y(s) - 1);
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s->mode &= ~(MODE_INSERT|MODE_KCURSOR|MODE_KKEYPAD|MODE_FOCUSON);
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s->mode &= ~(ALL_MOUSE_MODES|MODE_MOUSE_UTF8|MODE_MOUSE_SGR);
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screen_write_clearscreen(ctx, 8);
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screen_write_cursormove(ctx, 0, 0);
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}
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/* Write character. */
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void
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screen_write_putc(struct screen_write_ctx *ctx, const struct grid_cell *gcp,
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u_char ch)
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{
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struct grid_cell gc;
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memcpy(&gc, gcp, sizeof gc);
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utf8_set(&gc.data, ch);
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screen_write_cell(ctx, &gc);
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}
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/* Calculate string length, with embedded formatting. */
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size_t
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screen_write_cstrlen(const char *fmt, ...)
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{
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va_list ap;
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char *msg, *msg2, *ptr, *ptr2;
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size_t size;
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va_start(ap, fmt);
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xvasprintf(&msg, fmt, ap);
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va_end(ap);
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msg2 = xmalloc(strlen(msg) + 1);
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ptr = msg;
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ptr2 = msg2;
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while (*ptr != '\0') {
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if (ptr[0] == '#' && ptr[1] == '[') {
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while (*ptr != ']' && *ptr != '\0')
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ptr++;
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if (*ptr == ']')
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ptr++;
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continue;
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}
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*ptr2++ = *ptr++;
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}
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*ptr2 = '\0';
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size = screen_write_strlen("%s", msg2);
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free(msg);
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free(msg2);
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return (size);
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}
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/* Calculate string length. */
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size_t
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screen_write_strlen(const char *fmt, ...)
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{
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va_list ap;
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char *msg;
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struct utf8_data ud;
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u_char *ptr;
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size_t left, size = 0;
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enum utf8_state more;
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va_start(ap, fmt);
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xvasprintf(&msg, fmt, ap);
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va_end(ap);
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ptr = msg;
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while (*ptr != '\0') {
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if (*ptr > 0x7f && utf8_open(&ud, *ptr) == UTF8_MORE) {
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ptr++;
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left = strlen(ptr);
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if (left < (size_t)ud.size - 1)
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break;
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while ((more = utf8_append(&ud, *ptr)) == UTF8_MORE)
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ptr++;
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ptr++;
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if (more == UTF8_DONE)
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size += ud.width;
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} else {
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if (*ptr > 0x1f && *ptr < 0x7f)
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size++;
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ptr++;
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}
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}
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free(msg);
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return (size);
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}
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/* Write simple string (no UTF-8 or maximum length). */
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void
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screen_write_puts(struct screen_write_ctx *ctx, const struct grid_cell *gcp,
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const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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screen_write_vnputs(ctx, -1, gcp, fmt, ap);
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va_end(ap);
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}
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/* Write string with length limit (-1 for unlimited). */
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void
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screen_write_nputs(struct screen_write_ctx *ctx, ssize_t maxlen,
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const struct grid_cell *gcp, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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screen_write_vnputs(ctx, maxlen, gcp, fmt, ap);
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va_end(ap);
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}
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void
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screen_write_vnputs(struct screen_write_ctx *ctx, ssize_t maxlen,
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const struct grid_cell *gcp, const char *fmt, va_list ap)
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{
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struct grid_cell gc;
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struct utf8_data *ud = &gc.data;
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char *msg;
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u_char *ptr;
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size_t left, size = 0;
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enum utf8_state more;
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memcpy(&gc, gcp, sizeof gc);
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xvasprintf(&msg, fmt, ap);
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ptr = msg;
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while (*ptr != '\0') {
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if (*ptr > 0x7f && utf8_open(ud, *ptr) == UTF8_MORE) {
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ptr++;
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left = strlen(ptr);
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if (left < (size_t)ud->size - 1)
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break;
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while ((more = utf8_append(ud, *ptr)) == UTF8_MORE)
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ptr++;
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ptr++;
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if (more != UTF8_DONE)
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continue;
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if (maxlen > 0 && size + ud->width > (size_t)maxlen) {
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while (size < (size_t)maxlen) {
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screen_write_putc(ctx, &gc, ' ');
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size++;
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}
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break;
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}
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size += ud->width;
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screen_write_cell(ctx, &gc);
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} else {
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if (maxlen > 0 && size + 1 > (size_t)maxlen)
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break;
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if (*ptr == '\001')
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gc.attr ^= GRID_ATTR_CHARSET;
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else if (*ptr > 0x1f && *ptr < 0x7f) {
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size++;
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screen_write_putc(ctx, &gc, *ptr);
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}
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ptr++;
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}
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}
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free(msg);
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}
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/* Write string, similar to nputs, but with embedded formatting (#[]). */
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void
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screen_write_cnputs(struct screen_write_ctx *ctx, ssize_t maxlen,
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const struct grid_cell *gcp, const char *fmt, ...)
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{
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struct grid_cell gc;
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struct utf8_data *ud = &gc.data;
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va_list ap;
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char *msg;
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u_char *ptr, *last;
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size_t left, size = 0;
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enum utf8_state more;
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memcpy(&gc, gcp, sizeof gc);
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va_start(ap, fmt);
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xvasprintf(&msg, fmt, ap);
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va_end(ap);
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ptr = msg;
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while (*ptr != '\0') {
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if (ptr[0] == '#' && ptr[1] == '[') {
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ptr += 2;
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last = ptr + strcspn(ptr, "]");
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if (*last == '\0') {
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/* No ]. Not much point in doing anything. */
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break;
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}
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*last = '\0';
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style_parse(gcp, &gc, ptr);
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ptr = last + 1;
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continue;
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}
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if (*ptr > 0x7f && utf8_open(ud, *ptr) == UTF8_MORE) {
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ptr++;
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left = strlen(ptr);
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if (left < (size_t)ud->size - 1)
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break;
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while ((more = utf8_append(ud, *ptr)) == UTF8_MORE)
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ptr++;
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ptr++;
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if (more != UTF8_DONE)
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continue;
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if (maxlen > 0 && size + ud->width > (size_t)maxlen) {
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while (size < (size_t)maxlen) {
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screen_write_putc(ctx, &gc, ' ');
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size++;
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}
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break;
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}
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size += ud->width;
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screen_write_cell(ctx, &gc);
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} else {
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if (maxlen > 0 && size + 1 > (size_t)maxlen)
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break;
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if (*ptr > 0x1f && *ptr < 0x7f) {
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size++;
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screen_write_putc(ctx, &gc, *ptr);
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}
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ptr++;
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}
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}
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free(msg);
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}
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/* Copy from another screen. */
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void
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screen_write_copy(struct screen_write_ctx *ctx, struct screen *src, u_int px,
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u_int py, u_int nx, u_int ny, bitstr_t *markbs,
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const struct grid_cell *markgc)
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{
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struct screen *s = ctx->s;
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struct grid *gd = src->grid;
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struct grid_cell gc;
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u_int xx, yy, cx, cy, b;
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if (nx == 0 || ny == 0)
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return;
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cx = s->cx;
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cy = s->cy;
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for (yy = py; yy < py + ny; yy++) {
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for (xx = px; xx < px + nx; xx++) {
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grid_get_cell(gd, xx, yy, &gc);
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if (markbs != NULL) {
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b = (yy * screen_size_x(src)) + xx;
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if (bit_test(markbs, b)) {
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gc.attr = markgc->attr;
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gc.fg = markgc->fg;
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gc.bg = markgc->bg;
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}
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}
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screen_write_cell(ctx, &gc);
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}
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cy++;
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screen_write_cursormove(ctx, cx, cy);
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}
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}
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/* Draw a line on screen. */
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void
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screen_write_line(struct screen_write_ctx *ctx, u_int nx, int left, int right)
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{
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struct screen *s = ctx->s;
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struct grid_cell gc;
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u_int cx, cy, i;
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cx = s->cx;
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cy = s->cy;
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memcpy(&gc, &grid_default_cell, sizeof gc);
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gc.attr |= GRID_ATTR_CHARSET;
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screen_write_putc(ctx, &gc, left ? 't' : 'q');
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for (i = 1; i < nx - 1; i++)
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screen_write_putc(ctx, &gc, 'q');
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screen_write_putc(ctx, &gc, right ? 'u' : 'q');
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screen_write_cursormove(ctx, cx, cy);
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}
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/* Draw a box on screen. */
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void
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screen_write_box(struct screen_write_ctx *ctx, u_int nx, u_int ny)
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{
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struct screen *s = ctx->s;
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struct grid_cell gc;
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u_int cx, cy, i;
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cx = s->cx;
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cy = s->cy;
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memcpy(&gc, &grid_default_cell, sizeof gc);
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gc.attr |= GRID_ATTR_CHARSET;
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screen_write_putc(ctx, &gc, 'l');
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for (i = 1; i < nx - 1; i++)
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screen_write_putc(ctx, &gc, 'q');
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screen_write_putc(ctx, &gc, 'k');
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screen_write_cursormove(ctx, cx, cy + ny - 1);
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screen_write_putc(ctx, &gc, 'm');
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for (i = 1; i < nx - 1; i++)
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screen_write_putc(ctx, &gc, 'q');
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screen_write_putc(ctx, &gc, 'j');
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for (i = 1; i < ny - 1; i++) {
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screen_write_cursormove(ctx, cx, cy + i);
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screen_write_putc(ctx, &gc, 'x');
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}
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for (i = 1; i < ny - 1; i++) {
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screen_write_cursormove(ctx, cx + nx - 1, cy + i);
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screen_write_putc(ctx, &gc, 'x');
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}
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screen_write_cursormove(ctx, cx, cy);
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}
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/* Write a preview version of a window. */
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void
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screen_write_preview(struct screen_write_ctx *ctx, struct screen *src, u_int nx,
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u_int ny)
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{
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struct screen *s = ctx->s;
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struct grid_cell gc;
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u_int cx, cy, px, py;
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cx = s->cx;
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cy = s->cy;
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/*
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* If the cursor is on, pick the area around the cursor, otherwise use
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* the top left.
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*/
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if (src->mode & MODE_CURSOR) {
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px = src->cx;
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if (px < nx / 3)
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px = 0;
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else
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px = px - nx / 3;
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if (px + nx > screen_size_x(src)) {
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if (nx > screen_size_x(src))
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px = 0;
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else
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px = screen_size_x(src) - nx;
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}
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py = src->cy;
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if (py < ny / 3)
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py = 0;
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else
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py = py - ny / 3;
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if (py + ny > screen_size_y(src)) {
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if (ny > screen_size_y(src))
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py = 0;
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else
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py = screen_size_y(src) - ny;
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}
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} else {
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px = 0;
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py = 0;
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}
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screen_write_copy(ctx, src, px, src->grid->hsize + py, nx, ny, NULL,
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NULL);
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if (src->mode & MODE_CURSOR) {
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grid_view_get_cell(src->grid, src->cx, src->cy, &gc);
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gc.attr |= GRID_ATTR_REVERSE;
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screen_write_cursormove(ctx, cx + (src->cx - px),
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cy + (src->cy - py));
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screen_write_cell(ctx, &gc);
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}
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}
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/* Set up context for TTY command. */
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static void
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screen_write_initctx(struct screen_write_ctx *ctx, struct tty_ctx *ttyctx)
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{
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struct screen *s = ctx->s;
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memset(ttyctx, 0, sizeof *ttyctx);
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ttyctx->wp = ctx->wp;
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ttyctx->ocx = s->cx;
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ttyctx->ocy = s->cy;
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ttyctx->orlower = s->rlower;
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ttyctx->orupper = s->rupper;
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}
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/* Set a mode. */
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void
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screen_write_mode_set(struct screen_write_ctx *ctx, int mode)
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{
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struct screen *s = ctx->s;
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s->mode |= mode;
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}
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/* Clear a mode. */
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void
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screen_write_mode_clear(struct screen_write_ctx *ctx, int mode)
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{
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struct screen *s = ctx->s;
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s->mode &= ~mode;
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}
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/* Cursor up by ny. */
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void
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screen_write_cursorup(struct screen_write_ctx *ctx, u_int ny)
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{
|
|
struct screen *s = ctx->s;
|
|
|
|
if (ny == 0)
|
|
ny = 1;
|
|
|
|
if (s->cy < s->rupper) {
|
|
/* Above region. */
|
|
if (ny > s->cy)
|
|
ny = s->cy;
|
|
} else {
|
|
/* Below region. */
|
|
if (ny > s->cy - s->rupper)
|
|
ny = s->cy - s->rupper;
|
|
}
|
|
if (s->cx == screen_size_x(s))
|
|
s->cx--;
|
|
if (ny == 0)
|
|
return;
|
|
|
|
s->cy -= ny;
|
|
}
|
|
|
|
/* Cursor down by ny. */
|
|
void
|
|
screen_write_cursordown(struct screen_write_ctx *ctx, u_int ny)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
|
|
if (ny == 0)
|
|
ny = 1;
|
|
|
|
if (s->cy > s->rlower) {
|
|
/* Below region. */
|
|
if (ny > screen_size_y(s) - 1 - s->cy)
|
|
ny = screen_size_y(s) - 1 - s->cy;
|
|
} else {
|
|
/* Above region. */
|
|
if (ny > s->rlower - s->cy)
|
|
ny = s->rlower - s->cy;
|
|
}
|
|
if (s->cx == screen_size_x(s))
|
|
s->cx--;
|
|
if (ny == 0)
|
|
return;
|
|
|
|
s->cy += ny;
|
|
}
|
|
|
|
/* Cursor right by nx. */
|
|
void
|
|
screen_write_cursorright(struct screen_write_ctx *ctx, u_int nx)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
|
|
if (nx == 0)
|
|
nx = 1;
|
|
|
|
if (nx > screen_size_x(s) - 1 - s->cx)
|
|
nx = screen_size_x(s) - 1 - s->cx;
|
|
if (nx == 0)
|
|
return;
|
|
|
|
s->cx += nx;
|
|
}
|
|
|
|
/* Cursor left by nx. */
|
|
void
|
|
screen_write_cursorleft(struct screen_write_ctx *ctx, u_int nx)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
|
|
if (nx == 0)
|
|
nx = 1;
|
|
|
|
if (nx > s->cx)
|
|
nx = s->cx;
|
|
if (nx == 0)
|
|
return;
|
|
|
|
s->cx -= nx;
|
|
}
|
|
|
|
/* Backspace; cursor left unless at start of wrapped line when can move up. */
|
|
void
|
|
screen_write_backspace(struct screen_write_ctx *ctx)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct grid_line *gl;
|
|
|
|
if (s->cx == 0) {
|
|
if (s->cy == 0)
|
|
return;
|
|
gl = &s->grid->linedata[s->grid->hsize + s->cy - 1];
|
|
if (gl->flags & GRID_LINE_WRAPPED) {
|
|
s->cy--;
|
|
s->cx = screen_size_x(s) - 1;
|
|
}
|
|
} else
|
|
s->cx--;
|
|
}
|
|
|
|
/* VT100 alignment test. */
|
|
void
|
|
screen_write_alignmenttest(struct screen_write_ctx *ctx)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct tty_ctx ttyctx;
|
|
struct grid_cell gc;
|
|
u_int xx, yy;
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
|
|
memcpy(&gc, &grid_default_cell, sizeof gc);
|
|
utf8_set(&gc.data, 'E');
|
|
|
|
for (yy = 0; yy < screen_size_y(s); yy++) {
|
|
for (xx = 0; xx < screen_size_x(s); xx++)
|
|
grid_view_set_cell(s->grid, xx, yy, &gc);
|
|
}
|
|
|
|
s->cx = 0;
|
|
s->cy = 0;
|
|
|
|
s->rupper = 0;
|
|
s->rlower = screen_size_y(s) - 1;
|
|
|
|
screen_write_collect_clear(ctx, 0, screen_size_y(s) - 1);
|
|
tty_write(tty_cmd_alignmenttest, &ttyctx);
|
|
}
|
|
|
|
/* Insert nx characters. */
|
|
void
|
|
screen_write_insertcharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct tty_ctx ttyctx;
|
|
|
|
if (nx == 0)
|
|
nx = 1;
|
|
|
|
if (nx > screen_size_x(s) - s->cx)
|
|
nx = screen_size_x(s) - s->cx;
|
|
if (nx == 0)
|
|
return;
|
|
|
|
if (s->cx > screen_size_x(s) - 1)
|
|
return;
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.bg = bg;
|
|
|
|
grid_view_insert_cells(s->grid, s->cx, s->cy, nx, bg);
|
|
|
|
screen_write_collect_flush(ctx, 0);
|
|
ttyctx.num = nx;
|
|
tty_write(tty_cmd_insertcharacter, &ttyctx);
|
|
}
|
|
|
|
/* Delete nx characters. */
|
|
void
|
|
screen_write_deletecharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct tty_ctx ttyctx;
|
|
|
|
if (nx == 0)
|
|
nx = 1;
|
|
|
|
if (nx > screen_size_x(s) - s->cx)
|
|
nx = screen_size_x(s) - s->cx;
|
|
if (nx == 0)
|
|
return;
|
|
|
|
if (s->cx > screen_size_x(s) - 1)
|
|
return;
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.bg = bg;
|
|
|
|
grid_view_delete_cells(s->grid, s->cx, s->cy, nx, bg);
|
|
|
|
screen_write_collect_flush(ctx, 0);
|
|
ttyctx.num = nx;
|
|
tty_write(tty_cmd_deletecharacter, &ttyctx);
|
|
}
|
|
|
|
/* Clear nx characters. */
|
|
void
|
|
screen_write_clearcharacter(struct screen_write_ctx *ctx, u_int nx, u_int bg)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct tty_ctx ttyctx;
|
|
|
|
if (nx == 0)
|
|
nx = 1;
|
|
|
|
if (nx > screen_size_x(s) - s->cx)
|
|
nx = screen_size_x(s) - s->cx;
|
|
if (nx == 0)
|
|
return;
|
|
|
|
if (s->cx > screen_size_x(s) - 1)
|
|
return;
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.bg = bg;
|
|
|
|
grid_view_clear(s->grid, s->cx, s->cy, nx, 1, bg);
|
|
|
|
screen_write_collect_flush(ctx, 0);
|
|
ttyctx.num = nx;
|
|
tty_write(tty_cmd_clearcharacter, &ttyctx);
|
|
}
|
|
|
|
/* Insert ny lines. */
|
|
void
|
|
screen_write_insertline(struct screen_write_ctx *ctx, u_int ny, u_int bg)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct grid *gd = s->grid;
|
|
struct tty_ctx ttyctx;
|
|
|
|
if (ny == 0)
|
|
ny = 1;
|
|
|
|
if (s->cy < s->rupper || s->cy > s->rlower) {
|
|
if (ny > screen_size_y(s) - s->cy)
|
|
ny = screen_size_y(s) - s->cy;
|
|
if (ny == 0)
|
|
return;
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.bg = bg;
|
|
|
|
grid_view_insert_lines(gd, s->cy, ny, bg);
|
|
|
|
screen_write_collect_flush(ctx, 0);
|
|
ttyctx.num = ny;
|
|
tty_write(tty_cmd_insertline, &ttyctx);
|
|
return;
|
|
}
|
|
|
|
if (ny > s->rlower + 1 - s->cy)
|
|
ny = s->rlower + 1 - s->cy;
|
|
if (ny == 0)
|
|
return;
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.bg = bg;
|
|
|
|
if (s->cy < s->rupper || s->cy > s->rlower)
|
|
grid_view_insert_lines(gd, s->cy, ny, bg);
|
|
else
|
|
grid_view_insert_lines_region(gd, s->rlower, s->cy, ny, bg);
|
|
|
|
screen_write_collect_flush(ctx, 0);
|
|
ttyctx.num = ny;
|
|
tty_write(tty_cmd_insertline, &ttyctx);
|
|
}
|
|
|
|
/* Delete ny lines. */
|
|
void
|
|
screen_write_deleteline(struct screen_write_ctx *ctx, u_int ny, u_int bg)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct grid *gd = s->grid;
|
|
struct tty_ctx ttyctx;
|
|
|
|
if (ny == 0)
|
|
ny = 1;
|
|
|
|
if (s->cy < s->rupper || s->cy > s->rlower) {
|
|
if (ny > screen_size_y(s) - s->cy)
|
|
ny = screen_size_y(s) - s->cy;
|
|
if (ny == 0)
|
|
return;
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.bg = bg;
|
|
|
|
grid_view_delete_lines(gd, s->cy, ny, bg);
|
|
|
|
screen_write_collect_flush(ctx, 0);
|
|
ttyctx.num = ny;
|
|
tty_write(tty_cmd_deleteline, &ttyctx);
|
|
return;
|
|
}
|
|
|
|
if (ny > s->rlower + 1 - s->cy)
|
|
ny = s->rlower + 1 - s->cy;
|
|
if (ny == 0)
|
|
return;
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.bg = bg;
|
|
|
|
if (s->cy < s->rupper || s->cy > s->rlower)
|
|
grid_view_delete_lines(gd, s->cy, ny, bg);
|
|
else
|
|
grid_view_delete_lines_region(gd, s->rlower, s->cy, ny, bg);
|
|
|
|
screen_write_collect_flush(ctx, 0);
|
|
ttyctx.num = ny;
|
|
tty_write(tty_cmd_deleteline, &ttyctx);
|
|
}
|
|
|
|
/* Clear line at cursor. */
|
|
void
|
|
screen_write_clearline(struct screen_write_ctx *ctx, u_int bg)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct grid_line *gl;
|
|
struct tty_ctx ttyctx;
|
|
u_int sx = screen_size_x(s);
|
|
|
|
gl = &s->grid->linedata[s->grid->hsize + s->cy];
|
|
if (gl->cellsize == 0 && bg == 8)
|
|
return;
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.bg = bg;
|
|
|
|
grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
|
|
|
|
screen_write_collect_clear(ctx, s->cy, 1);
|
|
screen_write_collect_flush(ctx, 0);
|
|
tty_write(tty_cmd_clearline, &ttyctx);
|
|
}
|
|
|
|
/* Clear to end of line from cursor. */
|
|
void
|
|
screen_write_clearendofline(struct screen_write_ctx *ctx, u_int bg)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct grid_line *gl;
|
|
struct tty_ctx ttyctx;
|
|
u_int sx = screen_size_x(s);
|
|
|
|
gl = &s->grid->linedata[s->grid->hsize + s->cy];
|
|
if (s->cx > sx - 1 || (s->cx >= gl->cellsize && bg == 8))
|
|
return;
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.bg = bg;
|
|
|
|
grid_view_clear(s->grid, s->cx, s->cy, sx - s->cx, 1, bg);
|
|
|
|
if (s->cx == 0)
|
|
screen_write_collect_clear(ctx, s->cy, 1);
|
|
screen_write_collect_flush(ctx, 0);
|
|
tty_write(tty_cmd_clearendofline, &ttyctx);
|
|
}
|
|
|
|
/* Clear to start of line from cursor. */
|
|
void
|
|
screen_write_clearstartofline(struct screen_write_ctx *ctx, u_int bg)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct tty_ctx ttyctx;
|
|
u_int sx = screen_size_x(s);
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.bg = bg;
|
|
|
|
if (s->cx > sx - 1)
|
|
grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
|
|
else
|
|
grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1, bg);
|
|
|
|
if (s->cx > sx - 1)
|
|
screen_write_collect_clear(ctx, s->cy, 1);
|
|
screen_write_collect_flush(ctx, 0);
|
|
tty_write(tty_cmd_clearstartofline, &ttyctx);
|
|
}
|
|
|
|
/* Move cursor to px,py. */
|
|
void
|
|
screen_write_cursormove(struct screen_write_ctx *ctx, u_int px, u_int py)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
|
|
if (px > screen_size_x(s) - 1)
|
|
px = screen_size_x(s) - 1;
|
|
if (py > screen_size_y(s) - 1)
|
|
py = screen_size_y(s) - 1;
|
|
|
|
s->cx = px;
|
|
s->cy = py;
|
|
}
|
|
|
|
/* Reverse index (up with scroll). */
|
|
void
|
|
screen_write_reverseindex(struct screen_write_ctx *ctx, u_int bg)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct tty_ctx ttyctx;
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.bg = bg;
|
|
|
|
if (s->cy == s->rupper)
|
|
grid_view_scroll_region_down(s->grid, s->rupper, s->rlower, bg);
|
|
else if (s->cy > 0)
|
|
s->cy--;
|
|
|
|
screen_write_collect_flush(ctx, 0);
|
|
tty_write(tty_cmd_reverseindex, &ttyctx);
|
|
}
|
|
|
|
/* Set scroll region. */
|
|
void
|
|
screen_write_scrollregion(struct screen_write_ctx *ctx, u_int rupper,
|
|
u_int rlower)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
|
|
if (rupper > screen_size_y(s) - 1)
|
|
rupper = screen_size_y(s) - 1;
|
|
if (rlower > screen_size_y(s) - 1)
|
|
rlower = screen_size_y(s) - 1;
|
|
if (rupper >= rlower) /* cannot be one line */
|
|
return;
|
|
|
|
screen_write_collect_flush(ctx, 0);
|
|
|
|
/* Cursor moves to top-left. */
|
|
s->cx = 0;
|
|
s->cy = 0;
|
|
|
|
s->rupper = rupper;
|
|
s->rlower = rlower;
|
|
}
|
|
|
|
/* Line feed. */
|
|
void
|
|
screen_write_linefeed(struct screen_write_ctx *ctx, int wrapped, u_int bg)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct grid *gd = s->grid;
|
|
struct grid_line *gl;
|
|
|
|
gl = &gd->linedata[gd->hsize + s->cy];
|
|
if (wrapped)
|
|
gl->flags |= GRID_LINE_WRAPPED;
|
|
else
|
|
gl->flags &= ~GRID_LINE_WRAPPED;
|
|
|
|
log_debug("%s: at %u,%u (region %u-%u)", __func__, s->cx, s->cy,
|
|
s->rupper, s->rlower);
|
|
|
|
if (bg != ctx->bg) {
|
|
screen_write_collect_flush(ctx, 1);
|
|
ctx->bg = bg;
|
|
}
|
|
|
|
if (s->cy == s->rlower) {
|
|
grid_view_scroll_region_up(gd, s->rupper, s->rlower, bg);
|
|
screen_write_collect_scroll(ctx);
|
|
ctx->scrolled++;
|
|
} else if (s->cy < screen_size_y(s) - 1)
|
|
s->cy++;
|
|
}
|
|
|
|
/* Scroll up. */
|
|
void
|
|
screen_write_scrollup(struct screen_write_ctx *ctx, u_int lines, u_int bg)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct grid *gd = s->grid;
|
|
u_int i;
|
|
|
|
if (lines == 0)
|
|
lines = 1;
|
|
else if (lines > s->rlower - s->rupper + 1)
|
|
lines = s->rlower - s->rupper + 1;
|
|
|
|
if (bg != ctx->bg) {
|
|
screen_write_collect_flush(ctx, 1);
|
|
ctx->bg = bg;
|
|
}
|
|
|
|
for (i = 0; i < lines; i++) {
|
|
grid_view_scroll_region_up(gd, s->rupper, s->rlower, bg);
|
|
screen_write_collect_scroll(ctx);
|
|
}
|
|
ctx->scrolled += lines;
|
|
}
|
|
|
|
/* Carriage return (cursor to start of line). */
|
|
void
|
|
screen_write_carriagereturn(struct screen_write_ctx *ctx)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
|
|
s->cx = 0;
|
|
}
|
|
|
|
/* Clear to end of screen from cursor. */
|
|
void
|
|
screen_write_clearendofscreen(struct screen_write_ctx *ctx, u_int bg)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct grid *gd = s->grid;
|
|
struct tty_ctx ttyctx;
|
|
u_int sx = screen_size_x(s), sy = screen_size_y(s);
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.bg = bg;
|
|
|
|
/* Scroll into history if it is enabled and clearing entire screen. */
|
|
if (s->cx == 0 && s->cy == 0 && (gd->flags & GRID_HISTORY))
|
|
grid_view_clear_history(gd, bg);
|
|
else {
|
|
if (s->cx <= sx - 1)
|
|
grid_view_clear(gd, s->cx, s->cy, sx - s->cx, 1, bg);
|
|
grid_view_clear(gd, 0, s->cy + 1, sx, sy - (s->cy + 1), bg);
|
|
}
|
|
|
|
screen_write_collect_clear(ctx, s->cy + 1, sy - (s->cy + 1));
|
|
screen_write_collect_flush(ctx, 0);
|
|
tty_write(tty_cmd_clearendofscreen, &ttyctx);
|
|
}
|
|
|
|
/* Clear to start of screen. */
|
|
void
|
|
screen_write_clearstartofscreen(struct screen_write_ctx *ctx, u_int bg)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct tty_ctx ttyctx;
|
|
u_int sx = screen_size_x(s);
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.bg = bg;
|
|
|
|
if (s->cy > 0)
|
|
grid_view_clear(s->grid, 0, 0, sx, s->cy, bg);
|
|
if (s->cx > sx - 1)
|
|
grid_view_clear(s->grid, 0, s->cy, sx, 1, bg);
|
|
else
|
|
grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1, bg);
|
|
|
|
screen_write_collect_clear(ctx, 0, s->cy);
|
|
screen_write_collect_flush(ctx, 0);
|
|
tty_write(tty_cmd_clearstartofscreen, &ttyctx);
|
|
}
|
|
|
|
/* Clear entire screen. */
|
|
void
|
|
screen_write_clearscreen(struct screen_write_ctx *ctx, u_int bg)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct tty_ctx ttyctx;
|
|
u_int sx = screen_size_x(s), sy = screen_size_y(s);
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.bg = bg;
|
|
|
|
/* Scroll into history if it is enabled. */
|
|
if (s->grid->flags & GRID_HISTORY)
|
|
grid_view_clear_history(s->grid, bg);
|
|
else
|
|
grid_view_clear(s->grid, 0, 0, sx, sy, bg);
|
|
|
|
screen_write_collect_clear(ctx, 0, sy);
|
|
tty_write(tty_cmd_clearscreen, &ttyctx);
|
|
}
|
|
|
|
/* Clear entire history. */
|
|
void
|
|
screen_write_clearhistory(struct screen_write_ctx *ctx)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct grid *gd = s->grid;
|
|
|
|
grid_move_lines(gd, 0, gd->hsize, gd->sy, 8);
|
|
gd->hscrolled = gd->hsize = 0;
|
|
}
|
|
|
|
/* Clear a collected line. */
|
|
static void
|
|
screen_write_collect_clear(struct screen_write_ctx *ctx, u_int y, u_int n)
|
|
{
|
|
struct screen_write_collect_item *ci, *tmp;
|
|
u_int i;
|
|
size_t size;
|
|
|
|
for (i = y ; i < y + n; i++) {
|
|
if (TAILQ_EMPTY(&ctx->list[i].items))
|
|
continue;
|
|
size = 0;
|
|
TAILQ_FOREACH_SAFE(ci, &ctx->list[i].items, entry, tmp) {
|
|
size += ci->used;
|
|
TAILQ_REMOVE(&ctx->list[i].items, ci, entry);
|
|
free(ci);
|
|
}
|
|
ctx->skipped += size;
|
|
log_debug("%s: dropped %zu bytes (line %u)", __func__, size, i);
|
|
}
|
|
}
|
|
|
|
/* Scroll collected lines up. */
|
|
static void
|
|
screen_write_collect_scroll(struct screen_write_ctx *ctx)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct screen_write_collect_line *cl;
|
|
u_int y;
|
|
|
|
log_debug("%s: at %u,%u (region %u-%u)", __func__, s->cx, s->cy,
|
|
s->rupper, s->rlower);
|
|
|
|
screen_write_collect_clear(ctx, s->rupper, 1);
|
|
for (y = s->rupper; y < s->rlower; y++) {
|
|
cl = &ctx->list[y + 1];
|
|
TAILQ_CONCAT(&ctx->list[y].items, &cl->items, entry);
|
|
TAILQ_INIT(&cl->items);
|
|
}
|
|
}
|
|
|
|
/* Flush collected lines. */
|
|
static void
|
|
screen_write_collect_flush(struct screen_write_ctx *ctx, int scroll_only)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct screen_write_collect_item *ci, *tmp;
|
|
u_int y, cx, cy, items = 0;
|
|
struct tty_ctx ttyctx;
|
|
size_t written = 0;
|
|
|
|
if (ctx->scrolled != 0) {
|
|
log_debug("%s: scrolled %u (region %u-%u)", __func__,
|
|
ctx->scrolled, s->rupper, s->rlower);
|
|
if (ctx->scrolled > s->rlower - s->rupper + 1)
|
|
ctx->scrolled = s->rlower - s->rupper + 1;
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.num = ctx->scrolled;
|
|
ttyctx.bg = ctx->bg;
|
|
tty_write(tty_cmd_scrollup, &ttyctx);
|
|
}
|
|
ctx->scrolled = 0;
|
|
ctx->bg = 8;
|
|
|
|
if (scroll_only)
|
|
return;
|
|
|
|
cx = s->cx; cy = s->cy;
|
|
for (y = 0; y < screen_size_y(s); y++) {
|
|
TAILQ_FOREACH_SAFE(ci, &ctx->list[y].items, entry, tmp) {
|
|
screen_write_cursormove(ctx, ci->x, y);
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.cell = &ci->gc;
|
|
ttyctx.wrapped = ci->wrapped;
|
|
ttyctx.ptr = ci->data;
|
|
ttyctx.num = ci->used;
|
|
tty_write(tty_cmd_cells, &ttyctx);
|
|
|
|
items++;
|
|
written += ci->used;
|
|
|
|
TAILQ_REMOVE(&ctx->list[y].items, ci, entry);
|
|
free(ci);
|
|
}
|
|
}
|
|
s->cx = cx; s->cy = cy;
|
|
|
|
log_debug("%s: flushed %u items (%zu bytes)", __func__, items, written);
|
|
ctx->written += written;
|
|
}
|
|
|
|
/* Finish and store collected cells. */
|
|
void
|
|
screen_write_collect_end(struct screen_write_ctx *ctx)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct screen_write_collect_item *ci = ctx->item;
|
|
struct grid_cell gc;
|
|
|
|
if (ci->used == 0)
|
|
return;
|
|
ci->data[ci->used] = '\0';
|
|
|
|
ci->x = s->cx;
|
|
TAILQ_INSERT_TAIL(&ctx->list[s->cy].items, ci, entry);
|
|
ctx->item = xcalloc(1, sizeof *ctx->item);
|
|
|
|
log_debug("%s: %u %s (at %u,%u)", __func__, ci->used, ci->data, s->cx,
|
|
s->cy);
|
|
|
|
memcpy(&gc, &ci->gc, sizeof gc);
|
|
grid_view_set_cells(s->grid, s->cx, s->cy, &gc, ci->data, ci->used);
|
|
s->cx += ci->used;
|
|
}
|
|
|
|
/* Write cell data, collecting if necessary. */
|
|
void
|
|
screen_write_collect_add(struct screen_write_ctx *ctx,
|
|
const struct grid_cell *gc)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct screen_write_collect_item *ci;
|
|
u_int sx = screen_size_x(s);
|
|
int collect;
|
|
|
|
/*
|
|
* Don't need to check that the attributes and whatnot are still the
|
|
* same - input_parse will end the collection when anything that isn't
|
|
* a plain character is encountered. Also nothing should make it here
|
|
* that isn't a single ASCII character.
|
|
*/
|
|
|
|
collect = 1;
|
|
if (gc->data.width != 1 || gc->data.size != 1)
|
|
collect = 0;
|
|
else if (gc->attr & GRID_ATTR_CHARSET)
|
|
collect = 0;
|
|
else if (~s->mode & MODE_WRAP)
|
|
collect = 0;
|
|
else if (s->mode & MODE_INSERT)
|
|
collect = 0;
|
|
else if (s->sel.flag)
|
|
collect = 0;
|
|
if (!collect) {
|
|
screen_write_collect_end(ctx);
|
|
screen_write_collect_flush(ctx, 0);
|
|
screen_write_cell(ctx, gc);
|
|
return;
|
|
}
|
|
ctx->cells++;
|
|
|
|
if (s->cx > sx - 1 || ctx->item->used > sx - 1 - s->cx)
|
|
screen_write_collect_end(ctx);
|
|
ci = ctx->item; /* may have changed */
|
|
|
|
if (s->cx > sx - 1) {
|
|
log_debug("%s: wrapped at %u,%u", __func__, s->cx, s->cy);
|
|
ci->wrapped = 1;
|
|
screen_write_linefeed(ctx, 1, 8);
|
|
s->cx = 0;
|
|
}
|
|
|
|
if (ci->used == 0)
|
|
memcpy(&ci->gc, gc, sizeof ci->gc);
|
|
ci->data[ci->used++] = gc->data.data[0];
|
|
if (ci->used == (sizeof ci->data) - 1)
|
|
screen_write_collect_end(ctx);
|
|
}
|
|
|
|
/* Write cell data. */
|
|
void
|
|
screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct grid *gd = s->grid;
|
|
struct grid_line *gl;
|
|
struct grid_cell_entry *gce;
|
|
struct grid_cell tmp_gc, now_gc;
|
|
struct tty_ctx ttyctx;
|
|
u_int sx = screen_size_x(s), sy = screen_size_y(s);
|
|
u_int width = gc->data.width, xx, last, cx, cy;
|
|
int selected, skip = 1;
|
|
|
|
/* Ignore padding cells. */
|
|
if (gc->flags & GRID_FLAG_PADDING)
|
|
return;
|
|
ctx->cells++;
|
|
|
|
/* If the width is zero, combine onto the previous character. */
|
|
if (width == 0) {
|
|
screen_write_collect_flush(ctx, 0);
|
|
if ((gc = screen_write_combine(ctx, &gc->data, &xx)) != 0) {
|
|
cx = s->cx; cy = s->cy;
|
|
screen_write_cursormove(ctx, xx, s->cy);
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.cell = gc;
|
|
tty_write(tty_cmd_cell, &ttyctx);
|
|
s->cx = cx; s->cy = cy;
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* Flush any existing scrolling. */
|
|
screen_write_collect_flush(ctx, 1);
|
|
|
|
/* If this character doesn't fit, ignore it. */
|
|
if ((~s->mode & MODE_WRAP) &&
|
|
width > 1 &&
|
|
(width > sx || (s->cx != sx && s->cx > sx - width)))
|
|
return;
|
|
|
|
/* If in insert mode, make space for the cells. */
|
|
if (s->mode & MODE_INSERT) {
|
|
grid_view_insert_cells(s->grid, s->cx, s->cy, width, 8);
|
|
skip = 0;
|
|
}
|
|
|
|
/* Check this will fit on the current line and wrap if not. */
|
|
if ((s->mode & MODE_WRAP) && s->cx > sx - width) {
|
|
screen_write_linefeed(ctx, 1, 8);
|
|
s->cx = 0;
|
|
}
|
|
|
|
/* Sanity check cursor position. */
|
|
if (s->cx > sx - width || s->cy > sy - 1)
|
|
return;
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
|
|
/* Handle overwriting of UTF-8 characters. */
|
|
gl = &s->grid->linedata[s->grid->hsize + s->cy];
|
|
if (gl->flags & GRID_LINE_EXTENDED) {
|
|
grid_view_get_cell(gd, s->cx, s->cy, &now_gc);
|
|
if (screen_write_overwrite(ctx, &now_gc, width))
|
|
skip = 0;
|
|
}
|
|
|
|
/*
|
|
* If the new character is UTF-8 wide, fill in padding cells. Have
|
|
* already ensured there is enough room.
|
|
*/
|
|
for (xx = s->cx + 1; xx < s->cx + width; xx++) {
|
|
grid_view_set_cell(gd, xx, s->cy, &screen_write_pad_cell);
|
|
skip = 0;
|
|
}
|
|
|
|
/* If no change, do not draw. */
|
|
if (skip) {
|
|
if (s->cx >= gl->cellsize)
|
|
skip = grid_cells_equal(gc, &grid_default_cell);
|
|
else {
|
|
gce = &gl->celldata[s->cx];
|
|
if (gce->flags & GRID_FLAG_EXTENDED)
|
|
skip = 0;
|
|
else if (gc->flags != gce->flags)
|
|
skip = 0;
|
|
else if (gc->attr != gce->data.attr)
|
|
skip = 0;
|
|
else if (gc->fg != gce->data.fg)
|
|
skip = 0;
|
|
else if (gc->bg != gce->data.bg)
|
|
skip = 0;
|
|
else if (gc->data.width != 1)
|
|
skip = 0;
|
|
else if (gc->data.size != 1)
|
|
skip = 0;
|
|
else if (gce->data.data != gc->data.data[0])
|
|
skip = 0;
|
|
}
|
|
}
|
|
|
|
/* Update the selected flag and set the cell. */
|
|
selected = screen_check_selection(s, s->cx, s->cy);
|
|
if (selected && (~gc->flags & GRID_FLAG_SELECTED)) {
|
|
memcpy(&tmp_gc, gc, sizeof tmp_gc);
|
|
tmp_gc.flags |= GRID_FLAG_SELECTED;
|
|
grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
|
|
} else if (!selected && (gc->flags & GRID_FLAG_SELECTED)) {
|
|
memcpy(&tmp_gc, gc, sizeof tmp_gc);
|
|
tmp_gc.flags &= ~GRID_FLAG_SELECTED;
|
|
grid_view_set_cell(gd, s->cx, s->cy, &tmp_gc);
|
|
} else if (!skip)
|
|
grid_view_set_cell(gd, s->cx, s->cy, gc);
|
|
if (selected)
|
|
skip = 0;
|
|
|
|
/*
|
|
* Move the cursor. If not wrapping, stick at the last character and
|
|
* replace it.
|
|
*/
|
|
last = !(s->mode & MODE_WRAP);
|
|
if (s->cx <= sx - last - width)
|
|
s->cx += width;
|
|
else
|
|
s->cx = sx - last;
|
|
|
|
/* Create space for character in insert mode. */
|
|
if (s->mode & MODE_INSERT) {
|
|
screen_write_collect_flush(ctx, 0);
|
|
ttyctx.num = width;
|
|
tty_write(tty_cmd_insertcharacter, &ttyctx);
|
|
}
|
|
|
|
/* Write to the screen. */
|
|
if (!skip) {
|
|
if (selected) {
|
|
screen_select_cell(s, &tmp_gc, gc);
|
|
ttyctx.cell = &tmp_gc;
|
|
} else
|
|
ttyctx.cell = gc;
|
|
tty_write(tty_cmd_cell, &ttyctx);
|
|
ctx->written++;
|
|
} else
|
|
ctx->skipped++;
|
|
}
|
|
|
|
/* Combine a UTF-8 zero-width character onto the previous. */
|
|
static const struct grid_cell *
|
|
screen_write_combine(struct screen_write_ctx *ctx, const struct utf8_data *ud,
|
|
u_int *xx)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct grid *gd = s->grid;
|
|
static struct grid_cell gc;
|
|
u_int n;
|
|
|
|
/* Can't combine if at 0. */
|
|
if (s->cx == 0)
|
|
return (NULL);
|
|
|
|
/* Empty data is out. */
|
|
if (ud->size == 0)
|
|
fatalx("UTF-8 data empty");
|
|
|
|
/* Retrieve the previous cell. */
|
|
for (n = 1; n <= s->cx; n++) {
|
|
grid_view_get_cell(gd, s->cx - n, s->cy, &gc);
|
|
if (~gc.flags & GRID_FLAG_PADDING)
|
|
break;
|
|
}
|
|
if (n > s->cx)
|
|
return (NULL);
|
|
*xx = s->cx - n;
|
|
|
|
/* Check there is enough space. */
|
|
if (gc.data.size + ud->size > sizeof gc.data.data)
|
|
return (NULL);
|
|
|
|
log_debug("%s: %.*s onto %.*s at %u,%u", __func__, (int)ud->size,
|
|
ud->data, (int)gc.data.size, gc.data.data, *xx, s->cy);
|
|
|
|
/* Append the data. */
|
|
memcpy(gc.data.data + gc.data.size, ud->data, ud->size);
|
|
gc.data.size += ud->size;
|
|
|
|
/* Set the new cell. */
|
|
grid_view_set_cell(gd, *xx, s->cy, &gc);
|
|
|
|
return (&gc);
|
|
}
|
|
|
|
/*
|
|
* UTF-8 wide characters are a bit of an annoyance. They take up more than one
|
|
* cell on the screen, so following cells must not be drawn by marking them as
|
|
* padding.
|
|
*
|
|
* So far, so good. The problem is, when overwriting a padding cell, or a UTF-8
|
|
* character, it is necessary to also overwrite any other cells which covered
|
|
* by the same character.
|
|
*/
|
|
static int
|
|
screen_write_overwrite(struct screen_write_ctx *ctx, struct grid_cell *gc,
|
|
u_int width)
|
|
{
|
|
struct screen *s = ctx->s;
|
|
struct grid *gd = s->grid;
|
|
struct grid_cell tmp_gc;
|
|
u_int xx;
|
|
int done = 0;
|
|
|
|
if (gc->flags & GRID_FLAG_PADDING) {
|
|
/*
|
|
* A padding cell, so clear any following and leading padding
|
|
* cells back to the character. Don't overwrite the current
|
|
* cell as that happens later anyway.
|
|
*/
|
|
xx = s->cx + 1;
|
|
while (--xx > 0) {
|
|
grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
|
|
if (~tmp_gc.flags & GRID_FLAG_PADDING)
|
|
break;
|
|
grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
|
|
}
|
|
|
|
/* Overwrite the character at the start of this padding. */
|
|
grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
|
|
done = 1;
|
|
}
|
|
|
|
/*
|
|
* Overwrite any padding cells that belong to any UTF-8 characters
|
|
* we'll be overwriting with the current character.
|
|
*/
|
|
if (width != 1 ||
|
|
gc->data.width != 1 ||
|
|
gc->flags & GRID_FLAG_PADDING) {
|
|
xx = s->cx + width - 1;
|
|
while (++xx < screen_size_x(s)) {
|
|
grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
|
|
if (~tmp_gc.flags & GRID_FLAG_PADDING)
|
|
break;
|
|
grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
|
|
done = 1;
|
|
}
|
|
}
|
|
|
|
return (done);
|
|
}
|
|
|
|
/* Set external clipboard. */
|
|
void
|
|
screen_write_setselection(struct screen_write_ctx *ctx, u_char *str, u_int len)
|
|
{
|
|
struct tty_ctx ttyctx;
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.ptr = str;
|
|
ttyctx.num = len;
|
|
|
|
tty_write(tty_cmd_setselection, &ttyctx);
|
|
}
|
|
|
|
/* Write unmodified string. */
|
|
void
|
|
screen_write_rawstring(struct screen_write_ctx *ctx, u_char *str, u_int len)
|
|
{
|
|
struct tty_ctx ttyctx;
|
|
|
|
screen_write_initctx(ctx, &ttyctx);
|
|
ttyctx.ptr = str;
|
|
ttyctx.num = len;
|
|
|
|
tty_write(tty_cmd_rawstring, &ttyctx);
|
|
}
|