/* $OpenBSD$ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
static void screen_write_initctx(struct screen_write_ctx *,
struct tty_ctx *);
static void screen_write_collect_clear(struct screen_write_ctx *, u_int,
u_int);
static void screen_write_collect_scroll(struct screen_write_ctx *);
static void screen_write_collect_flush(struct screen_write_ctx *, int);
static int screen_write_overwrite(struct screen_write_ctx *,
struct grid_cell *, u_int);
static const struct grid_cell *screen_write_combine(struct screen_write_ctx *,
const struct utf8_data *, u_int *);
static const struct grid_cell screen_write_pad_cell = {
GRID_FLAG_PADDING, 0, 8, 8, { { 0 }, 0, 0, 0 }
};
struct screen_write_collect_item {
u_int x;
int wrapped;
u_int used;
char data[256];
struct grid_cell gc;
TAILQ_ENTRY (screen_write_collect_item) entry;
};
struct screen_write_collect_line {
TAILQ_HEAD(, screen_write_collect_item) items;
};
/* Initialize writing with a window. */
void
screen_write_start(struct screen_write_ctx *ctx, struct window_pane *wp,
struct screen *s)
{
char tmp[16];
u_int y;
memset(ctx, 0, sizeof *ctx);
ctx->wp = wp;
if (wp != NULL && s == NULL)
ctx->s = wp->screen;
else
ctx->s = s;
ctx->list = xcalloc(screen_size_y(ctx->s), sizeof *ctx->list);
for (y = 0; y < screen_size_y(ctx->s); y++)
TAILQ_INIT(&ctx->list[y].items);
ctx->item = xcalloc(1, sizeof *ctx->item);
ctx->scrolled = 0
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