circlecloud/tmux
1
0
Fork 0
mirror of https://github.com/tmux/tmux.git synced 2024-12-13 01:48:47 +00:00
Code Issues Projects Releases Wiki Activity

Change to match xterm's resizing behaviour, including pushing lines into the

Browse Source 
history from the top when reducing vertical size and pulling them again when
increasing size.
This commit is contained in:
Nicholas Marriott 2009-06-25 16:02:10 +00:00
parent 944520b3a8
commit e6e1b45fa1
1 changed files with 47 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

78
screen.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: screen.c,v 1.3 2009/06/04 18:48:24 nicm Exp $ */
/* $OpenBSD: screen.c,v 1.4 2009/06/24 19:12:44 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -169,37 +169,41 @@ void
screen_resize_y(struct screen *s, u_int sy)
{
struct grid *gd = s->grid;
u_int oy, yy, ny;
u_int needed, available, oldy, i;
if (sy == 0)
fatalx("zero size");
oldy = screen_size_y(s);
/*
* When resizing:
*
* If the height is decreasing, delete lines from the bottom until
* hitting the cursor, then push lines from the top into the history.
*
* When increasing, pull as many lines as possible from the history to
* the top, then fill the remaining with blanks at the bottom.
*/
/* Size decreasing. */
if (sy < screen_size_y(s)) {
oy = screen_size_y(s);
if (sy < oldy) {
needed = oldy - sy;
/* Delete as many lines as possible from the bottom. */
available = oldy - 1 - s->cy;
if (available > 0) {
if (available > needed)
available = needed;
grid_view_delete_lines(gd, oldy - available, available);
}
needed -= available;
if (s->cy != 0) {
/*
* The cursor is not at the start. Try to remove as
* many lines as possible from the top. (Up to the
* cursor line.)
* Now just increase the history size to take over the lines
* which are left. XXX Should apply history limit?
*/
ny = s->cy;
if (ny > oy - sy)
ny = oy - sy;
grid_view_delete_lines(gd, 0, ny);
s->cy -= ny;
oy -= ny;
}
if (sy < oy) {
/* Remove any remaining lines from the bottom. */
grid_view_delete_lines(gd, sy, oy - sy);
if (s->cy >= sy)
s->cy = sy - 1;
}
gd->hsize += needed;
s->cy -= needed;
}
/* Resize line arrays. */
@ -209,18 +213,28 @@ screen_resize_y(struct screen *s, u_int sy)
gd->udata = xrealloc(gd->udata, gd->hsize + sy, sizeof *gd->udata);
/* Size increasing. */
if (sy > screen_size_y(s)) {
oy = screen_size_y(s);
for (yy = gd->hsize + oy; yy < gd->hsize + sy; yy++) {
gd->size[yy] = 0;
gd->data[yy] = NULL;
gd->usize[yy] = 0;
gd->udata[yy] = NULL;
if (sy > oldy) {
needed = sy - oldy;
/* Try to pull as much as possible out of the history. */
available = gd->hsize;
if (available > 0) {
if (available > needed)
available = needed;
gd->hsize -= available;
s->cy += available;
}
needed -= available;
/* Then fill the rest in with blanks. */
for (i = gd->hsize + sy - needed; i < gd->hsize + sy; i++) {
gd->size[i] = gd->usize[i] = 0;
gd->data[i] = gd->udata[i] = NULL;
}
}
/* Set the new size, and reset the scroll region. */
gd->sy = sy;
s->rupper = 0;
s->rlower = screen_size_y(s) - 1;
}