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Sync OpenBSD patchset 853: 

When clearing the entire screen, clear lines that are used into the
history like xterm does. Requested ages ago by someone I've forgotten.
pull/1/head
Tiago Cunha 2011-02-15 15:10:47 +00:00
parent 4e4568cade
commit 2ab568fa88
3 changed files with 43 additions and 7 deletions
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26
grid-view.c
View File

@ -1,4 +1,4 @@
/* $Id: grid-view.c,v 1.20 2009-12-04 22:14:47 tcunha Exp $ */
/* $Id: grid-view.c,v 1.21 2011-02-15 15:10:47 tcunha Exp $ */
/*
* Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
@ -74,6 +74,30 @@ grid_view_set_utf8(
grid_set_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py), gu);
}
/* Clear into history. */
void
grid_view_clear_history(struct grid *gd)
{
struct grid_line *gl;
u_int yy, last;
GRID_DEBUG(gd, "");
/* Find the last used line. */
last = 0;
for (yy = 0; yy < gd->sy; yy++) {
gl = &gd->linedata[grid_view_y(gd, yy)];
if (gl->cellsize != 0 || gl->utf8size != 0)
last = yy + 1;
}
if (last == 0)
return;
/* Scroll the lines into the history. */
for (yy = 0; yy < last; yy++)
grid_scroll_history(gd);
}
/* Clear area. */
void
grid_view_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny)

21
screen-write.c
View File

@ -1,4 +1,4 @@
/* $Id: screen-write.c,v 1.92 2011-01-07 14:34:45 tcunha Exp $ */
/* $Id: screen-write.c,v 1.93 2011-02-15 15:10:47 tcunha Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -931,9 +931,14 @@ screen_write_clearendofscreen(struct screen_write_ctx *ctx)
sx = screen_size_x(s);
sy = screen_size_y(s);
if (s->cx <= sx - 1)
grid_view_clear(s->grid, s->cx, s->cy, sx - s->cx, 1);
grid_view_clear(s->grid, 0, s->cy + 1, sx, sy - (s->cy + 1));
/* Scroll into history if it is enabled and clearing entire screen. */
if (s->cy == 0 && s->grid->flags & GRID_HISTORY)
grid_view_clear_history(s->grid);
else {
if (s->cx <= sx - 1)
grid_view_clear(s->grid, s->cx, s->cy, sx - s->cx, 1);
grid_view_clear(s->grid, 0, s->cy + 1, sx, sy - (s->cy + 1));
}
tty_write(tty_cmd_clearendofscreen, &ttyctx);
}
@ -969,7 +974,13 @@ screen_write_clearscreen(struct screen_write_ctx *ctx)
screen_write_initctx(ctx, &ttyctx, 0);
grid_view_clear(s->grid, 0, 0, screen_size_x(s), screen_size_y(s));
/* Scroll into history if it is enabled. */
if (s->grid->flags & GRID_HISTORY)
grid_view_clear_history(s->grid);
else {
grid_view_clear(
s->grid, 0, 0, screen_size_x(s), screen_size_y(s));
}
tty_write(tty_cmd_clearscreen, &ttyctx);
}

3
tmux.h
View File

@ -1,4 +1,4 @@
/* $Id: tmux.h,v 1.607 2011-02-15 15:09:52 tcunha Exp $ */
/* $Id: tmux.h,v 1.608 2011-02-15 15:10:47 tcunha Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -1737,6 +1737,7 @@ const struct grid_utf8 *grid_view_peek_utf8(struct grid *, u_int, u_int);
struct grid_utf8 *grid_view_get_utf8(struct grid *, u_int, u_int);
void grid_view_set_utf8(
struct grid *, u_int, u_int, const struct grid_utf8 *);
void grid_view_clear_history(struct grid *);
void grid_view_clear(struct grid *, u_int, u_int, u_int, u_int);
void grid_view_scroll_region_up(struct grid *, u_int, u_int);
void grid_view_scroll_region_down(struct grid *, u_int, u_int);