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Only redraw the modified character when adding combining characters, not

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the whole line.
This commit is contained in:
nicm 2017-02-06 13:23:00 +00:00
parent d091253a5d
commit 3fd34e70e5
3 changed files with 26 additions and 25 deletions
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38
screen-write.c
View File

@ -31,8 +31,8 @@ static void screen_write_flush(struct screen_write_ctx *);
static int screen_write_overwrite(struct screen_write_ctx *,
struct grid_cell *, u_int);
static int screen_write_combine(struct screen_write_ctx *,
const struct utf8_data *);
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 }
@ -1061,9 +1061,11 @@ screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
* there is space.
*/
if (width == 0) {
if (screen_write_combine(ctx, &gc->data) == 0) {
if ((gc = screen_write_combine(ctx, &gc->data, &xx)) != 0) {
screen_write_cursormove(ctx, xx, s->cy);
screen_write_initctx(ctx, &ttyctx);
tty_write(tty_cmd_utf8character, &ttyctx);
ttyctx.cell = gc;
tty_write(tty_cmd_cell, &ttyctx);
}
return;
}
@ -1203,36 +1205,48 @@ screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
}
/* Combine a UTF-8 zero-width character onto the previous. */
static int
screen_write_combine(struct screen_write_ctx *ctx, const struct utf8_data *ud)
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;
struct grid_cell gc;
static struct grid_cell gc;
u_int n;
/* Can't combine if at 0. */
if (s->cx == 0)
return (-1);
return (NULL);
/* Empty data is out. */
if (ud->size == 0)
fatalx("UTF-8 data empty");
/* Retrieve the previous cell. */
grid_view_get_cell(gd, s->cx - 1, s->cy, &gc);
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 (-1);
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, s->cx - 1, s->cy, &gc);
grid_view_set_cell(gd, *xx, s->cy, &gc);
return (0);
return (&gc);
}
/*

1
tmux.h
View File

@ -1667,7 +1667,6 @@ void tty_cmd_erasecharacter(struct tty *, const struct tty_ctx *);
void tty_cmd_insertcharacter(struct tty *, const struct tty_ctx *);
void tty_cmd_insertline(struct tty *, const struct tty_ctx *);
void tty_cmd_linefeed(struct tty *, const struct tty_ctx *);
void tty_cmd_utf8character(struct tty *, const struct tty_ctx *);
void tty_cmd_reverseindex(struct tty *, const struct tty_ctx *);
void tty_cmd_setselection(struct tty *, const struct tty_ctx *);
void tty_cmd_rawstring(struct tty *, const struct tty_ctx *);

12
tty.c
View File

@ -1173,18 +1173,6 @@ tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
tty_cell(tty, ctx->cell, wp);
}
void
tty_cmd_utf8character(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
/*
* Cannot rely on not being a partial character, so just redraw the
* whole line.
*/
tty_draw_pane(tty, wp, ctx->ocy, ctx->xoff, ctx->yoff);
}
void
tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
{