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Commit 5fe0b054 authored by Richard M. Stallman's avatar Richard M. Stallman
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(size_window): New arg FIRST_ONLY. All callers changed. 

(adjust_window_trailing_edge): Specially compute FIRST_PARALLEL
for the case of a top-level window and the following minibuffer.
Don't exit because of no `next' when there is a parent.
Use the FIRST_ONLY feature when resizing following windows.
parent aa7b08b4
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Inline Side-by-side
Showing with 70 additions and 17 deletions
src/window.c
View file @ 5fe0b054
......@@ -63,7 +63,7 @@ static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int));
static void window_scroll_line_based P_ ((Lisp_Object, int, int, int));
static int window_min_size_1 P_ ((struct window *, int));
static int window_min_size P_ ((struct window *, int, int, int *));
static void size_window P_ ((Lisp_Object, int, int, int));
static void size_window P_ ((Lisp_Object, int, int, int, int, int));
static int freeze_window_start P_ ((struct window *, void *));
static int window_fixed_size_p P_ ((struct window *, int, int));
static void enlarge_window P_ ((Lisp_Object, int, int));
......@@ -2826,17 +2826,23 @@ shrink_windows (total, size, nchildren, shrinkable,
/* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set
WINDOW's width. Resize WINDOW's children, if any, so that they
keep their proportionate size relative to WINDOW. Propagate
WINDOW's top or left edge position to children. Delete windows
that become too small unless NODELETE_P is non-zero.
keep their proportionate size relative to WINDOW.
If FIRST_ONLY is 1, change only the first of WINDOW's children when
they are in series. If LAST_ONLY is 1, change only the last of
WINDOW's children when they are in series.
Propagate WINDOW's top or left edge position to children. Delete
windows that become too small unless NODELETE_P is non-zero.
If NODELETE_P is 2, that means we do delete windows that are
too small, even if they were too small before! */
static void
size_window (window, size, width_p, nodelete_p)
size_window (window, size, width_p, nodelete_p, first_only, last_only)
Lisp_Object window;
int size, width_p, nodelete_p;
int first_only, last_only;
{
struct window *w = XWINDOW (window);
struct window *c;
......@@ -2911,6 +2917,7 @@ size_window (window, size, width_p, nodelete_p)
if (!NILP (*sideward))
{
/* We have a chain of parallel siblings whose size should all change. */
for (child = *sideward; !NILP (child); child = c->next)
{
c = XWINDOW (child);
......@@ -2918,9 +2925,45 @@ size_window (window, size, width_p, nodelete_p)
c->left_col = w->left_col;
else
c->top_line = w->top_line;
size_window (child, size, width_p, nodelete_p);
size_window (child, size, width_p, nodelete_p,
first_only, last_only);
}
}
else if (!NILP (*forward) && last_only)
{
/* Change the last in a series of siblings. */
Lisp_Object last_child;
int child_size;
for (child = *forward; !NILP (child); child = c->next)
{
c = XWINDOW (child);
last_child = child;
}
child_size = XINT (width_p ? c->total_cols : c->total_lines);
size_window (last_child,
size - old_size + child_size,
width_p, nodelete_p, first_only, last_only);
}
else if (!NILP (*forward) && first_only)
{
/* Change the first in a series of siblings. */
int child_size;
child = *forward;
c = XWINDOW (child);
if (width_p)
c->left_col = w->left_col;
else
c->top_line = w->top_line;
child_size = XINT (width_p ? c->total_cols : c->total_lines);
size_window (child,
size - old_size + child_size,
width_p, nodelete_p, first_only, last_only);
}
else if (!NILP (*forward))
{
int fixed_size, each, extra, n;
......@@ -2928,7 +2971,7 @@ size_window (window, size, width_p, nodelete_p)
int last_pos, first_pos, nchildren, total;
int *new_sizes = NULL;
/* Determine the fixed-size portion of the this window, and the
/* Determine the fixed-size portion of this window, and the
number of child windows. */
fixed_size = nchildren = nfixed = total = 0;
for (child = *forward; !NILP (child); child = c->next, ++nchildren)
......@@ -2991,7 +3034,7 @@ size_window (window, size, width_p, nodelete_p)
/* Set new height. Note that size_window also propagates
edge positions to children, so it's not a no-op if we
didn't change the child's size. */
size_window (child, new_size, width_p, 1);
size_window (child, new_size, width_p, 1, first_only, last_only);
/* Remember the bottom/right edge position of this child; it
will be used to set the top/left edge of the next child. */
......@@ -3010,7 +3053,7 @@ size_window (window, size, width_p, nodelete_p)
int child_size;
c = XWINDOW (child);
child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines);
size_window (child, child_size, width_p, 2);
size_window (child, child_size, width_p, 2, first_only, last_only);
}
}
}
......@@ -3026,7 +3069,7 @@ set_window_height (window, height, nodelete)
int height;
int nodelete;
{
size_window (window, height, 0, nodelete);
size_window (window, height, 0, nodelete, 0, 0);
}
......@@ -3041,7 +3084,7 @@ set_window_width (window, width, nodelete)
int width;
int nodelete;
{
size_window (window, width, 1, nodelete);
size_window (window, width, 1, nodelete, 0, 0);
}
/* Change window heights in windows rooted in WINDOW by N lines. */
......@@ -4281,8 +4324,8 @@ adjust_window_trailing_edge (window, delta, horiz_flag)
if (NILP (window))
{
/* This can happen if WINDOW on the previous iteration was
at top level of the tree and we did not exit. */
/* This happens if WINDOW on the previous iteration was
at top level of the window tree. */
Fset_window_configuration (old_config);
error ("Specified window edge is fixed");
}
......@@ -4296,6 +4339,14 @@ adjust_window_trailing_edge (window, delta, horiz_flag)
{
if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild))
first_parallel = XWINDOW (parent)->vchild;
else if (NILP (parent) && !NILP (p->next))
{
/* Handle the vertical chain of main window and minibuffer
which has no parent. */
first_parallel = window;
while (! NILP (XWINDOW (first_parallel)->prev))
first_parallel = XWINDOW (first_parallel)->prev;
}
}
else
{
......@@ -4304,8 +4355,10 @@ adjust_window_trailing_edge (window, delta, horiz_flag)
}
/* If this level's succession is in the desired dimension,
and this window is the last one, its trailing edge is fixed. */
if (NILP (XWINDOW (window)->next) && NILP (first_parallel))
and this window is the last one, and there is no higher level,
its trailing edge is fixed. */
if (NILP (XWINDOW (window)->next) && NILP (first_parallel)
&& NILP (parent))
{
Fset_window_configuration (old_config);
error ("Specified window edge is fixed");
......@@ -4347,7 +4400,7 @@ adjust_window_trailing_edge (window, delta, horiz_flag)
XSETINT (CURBEG (p->next),
XINT (CURBEG (p->next)) + delta);
size_window (p->next, XINT (CURSIZE (p->next)) - delta,
horiz_flag, 0);
horiz_flag, 0, 1, 0);
break;
}
}
......@@ -4359,7 +4412,7 @@ adjust_window_trailing_edge (window, delta, horiz_flag)
child = XWINDOW (child)->next)
if (! EQ (child, window))
size_window (child, XINT (CURSIZE (child)) + delta,
horiz_flag, 0);
horiz_flag, 0, 0, 1);
window = parent;
}
......
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