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Sync OpenBSD patchset 414:

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Instead of having a complicated check to see if the cursor is in the last
position to avoid an explicit wrap, actually move it there.

Some UTF-8 fixes to come.
This commit is contained in:
Tiago Cunha
2009-10-23 17:06:23 +00:00
parent 13d1df659f
commit ac4e4a2b6c
3 changed files with 68 additions and 47 deletions
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36
tty.c
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@ -1,4 +1,4 @@
/* $Id: tty.c,v 1.153 2009-10-23 17:03:48 tcunha Exp $ */
/* $Id: tty.c,v 1.154 2009-10-23 17:06:23 tcunha Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -461,7 +461,7 @@ tty_draw_line(struct tty *tty, struct screen *s, u_int py, u_int ox, u_int oy)
/*
* Don't move the cursor to the start permission if it will wrap there
* itself; much the same as the conditions in tty_cmd_cell.
* itself.
*/
gl = NULL;
if (py != 0)
@ -847,33 +847,21 @@ tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct screen *s = wp->screen;
struct grid_line *gl;
u_int wx, wy;
u_int cx;
tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
wx = ctx->ocx + wp->xoff;
wy = ctx->ocy + wp->yoff;
/*
* If:
*
* - the line was wrapped:
* - the cursor is beyond the edge of the screen,
* - the desired position is at the left,
* - and either a) the desired next line is the one below the current
* or b) the current line is the bottom of the scroll region,
*
* Then just printing the next character will be enough to scroll into
* place, so don't do an explicit cursor move.
* Should the cursor be in the last cursor position ready for a natural
* wrap? If so - and it isn't - move to and rewrite the last cell.
*/
gl = NULL;
if (ctx->ocy != 0)
gl = &s->grid->linedata[s->grid->hsize + ctx->ocy - 1];
if (wy == 0 || (gl != NULL && !(gl->flags & GRID_LINE_WRAPPED)) ||
tty->cx < tty->sx || /* not at edge of screen */
wx != 0 || /* don't want 0 next */
(wy != tty->cy + 1 && tty->cy != ctx->orlower + wp->yoff))
if (ctx->ocx + wp->xoff > tty->sx - ctx->last_width) {
if (tty->cx < tty->sx) {
cx = screen_size_x(s) - ctx->last_width;
tty_cursor_pane(tty, ctx, cx, ctx->ocy);
tty_cell(tty, &ctx->last_cell, &ctx->last_utf8);
}
} else
tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
tty_cell(tty, ctx->cell, ctx->utf8);