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Initial history support.

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This commit is contained in:
Nicholas Marriott
2007-11-21 13:11:41 +00:00
parent 9b9ceac657
commit 9a6e47cfa8
21 changed files with 491 additions and 187 deletions
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46
screen-display.c
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@ -1,4 +1,4 @@
/* $Id: screen-display.c,v 1.1 2007-11-20 21:42:29 nicm Exp $ */
/* $Id: screen-display.c,v 1.2 2007-11-21 13:11:41 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -168,6 +168,36 @@ screen_display_cursor_down(struct screen *s)
void
screen_display_scroll_region_up(struct screen *s)
{
u_int sy;
/*
* If the region is the entire screen, this is easy-peasy. Allocate
* a new line and adjust the history size.
* XXX1 should this be done somewhere else?
*/
if (s->rupper == 0 && s->rlower == screen_last_y(s)) {
sy = screen_size_y(s) + s->hsize;
if (s->hsize == s->hlimit) {
/*
* If the limit is hit, shift the whole thing up.
* XXX this is inefficient, is there a better way?
*/
screen_move_lines(s, 0, 1, sy - 1);
} else {
s->hsize++;
s->grid_data = xrealloc(
s->grid_data, sy + 1, sizeof *s->grid_data);
s->grid_attr = xrealloc(
s->grid_attr, sy + 1, sizeof *s->grid_attr);
s->grid_colr = xrealloc(
s->grid_colr, sy + 1, sizeof *s->grid_colr);
}
screen_display_make_lines(s, screen_last_y(s), 1);
return;
}
/*
* Scroll scrolling region up:
* - delete rupper
@ -189,8 +219,6 @@ screen_display_scroll_region_up(struct screen *s)
}
screen_display_make_lines(s, s->rlower, 1);
screen_display_fill_lines(
s, s->rlower, 1, SCREEN_DEFDATA, SCREEN_DEFATTR, SCREEN_DEFCOLR);
}
/* Scroll region down. */
@ -218,8 +246,6 @@ screen_display_scroll_region_down(struct screen *s)
}
screen_display_make_lines(s, s->rupper, 1);
screen_display_fill_lines(
s, s->rupper, 1, SCREEN_DEFDATA, SCREEN_DEFATTR, SCREEN_DEFCOLR);
}
/* Insert lines. */
@ -368,15 +394,14 @@ screen_display_insert_characters(struct screen *s, u_int px, u_int py, u_int nx)
{
u_int mx;
px = screen_x(s, px);
py = screen_y(s, py);
if (!screen_in_x(s, px) || !screen_in_y(s, py))
fatalx("bad value");
if (px + nx > screen_last_x(s))
nx = screen_last_x(s) - px;
py = screen_y(s, py);
/*
* Inserting a range of nx at px.
*
@ -401,15 +426,14 @@ screen_display_delete_characters(struct screen *s, u_int px, u_int py, u_int nx)
{
u_int mx;
px = screen_x(s, px);
py = screen_y(s, py);
if (!screen_in_x(s, px) || !screen_in_y(s, py))
fatalx("bad value");
if (px + nx > screen_last_x(s))
nx = screen_last_x(s) - px;
py = screen_y(s, py);
/*
* Deleting the range from px to px + nx.
*