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Simplify code to work out if an extra line is needed in the cell.

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This commit is contained in:
nicm
2019-07-15 18:43:32 +00:00
parent 6ceeceab7a
commit eac055bfaf
1 changed files with 65 additions and 42 deletions
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99
layout.c
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@@ -39,7 +39,6 @@ static int layout_resize_pane_grow(struct window *, struct layout_cell *,
enum layout_type, int, int);
static int layout_resize_pane_shrink(struct window *, struct layout_cell *,
enum layout_type, int);
static int layout_need_status(struct layout_cell *, int);
static u_int layout_new_pane_size(struct window *, u_int,
struct layout_cell *, enum layout_type, u_int, u_int,
u_int);
@@ -199,7 +198,7 @@ layout_make_node(struct layout_cell *lc, enum layout_type type)
lc->wp = NULL;
}
/* Fix cell offsets based on their sizes. */
/* Fix cell offsets for a child cell. */
static void
layout_fix_offsets1(struct layout_cell *lc)
{
@@ -239,55 +238,74 @@ layout_fix_offsets(struct window *w)
layout_fix_offsets1(lc);
}
/*
* Returns 1 if we need to reserve space for the pane status line. This is the
* case for the most upper panes only.
*/
/* Is this a top cell? */
static int
layout_need_status(struct layout_cell *lc, int status)
layout_cell_is_top(struct window *w, struct layout_cell *lc)
{
struct layout_cell *next;
if (lc->parent != NULL) {
if (lc->parent->type == LAYOUT_LEFTRIGHT)
return (layout_need_status(lc->parent, status));
if (status == PANE_STATUS_TOP)
next = TAILQ_FIRST(&lc->parent->cells);
else
next = TAILQ_LAST(&lc->parent->cells,layout_cells);
if (lc == next)
return (layout_need_status(lc->parent, status));
while (lc != w->layout_root) {
next = lc->parent;
if (next->type == LAYOUT_TOPBOTTOM &&
lc != TAILQ_FIRST(&next->cells))
return (0);
lc = next;
}
return (1);
}
/* Is this a bottom cell? */
static int
layout_cell_is_bottom(struct window *w, struct layout_cell *lc)
{
struct layout_cell *next;
while (lc != w->layout_root) {
next = lc->parent;
if (next->type == LAYOUT_TOPBOTTOM &&
lc != TAILQ_LAST(&next->cells, layout_cells))
return (0);
lc = next;
}
return (1);
}
/*
* Returns 1 if we need to add an extra line for the pane status line. This is
* the case for the most upper or lower panes only.
*/
static int
layout_add_border(struct window *w, struct layout_cell *lc, int status)
{
if (status == PANE_STATUS_TOP)
return (layout_cell_is_top(w, lc));
if (status == PANE_STATUS_BOTTOM)
return (layout_cell_is_bottom(w, lc));
return (0);
}
/* Update pane offsets and sizes based on their cells. */
void
layout_fix_panes(struct window *w)
{
struct window_pane *wp;
struct layout_cell *lc;
int shift, status;
int status;
status = options_get_number(w->options, "pane-border-status");
TAILQ_FOREACH(wp, &w->panes, entry) {
if ((lc = wp->layout_cell) == NULL)
continue;
if (status != PANE_STATUS_OFF)
shift = layout_need_status(lc, status);
else
shift = 0;
wp->xoff = lc->xoff;
wp->yoff = lc->yoff;
if (shift && status == PANE_STATUS_TOP)
wp->yoff += 1;
window_pane_resize(wp, lc->sx, lc->sy - shift);
if (layout_add_border(w, lc, status)) {
if (status == PANE_STATUS_TOP)
wp->yoff++;
window_pane_resize(wp, lc->sx, lc->sy - 1);
} else
window_pane_resize(wp, lc->sx, lc->sy);
}
}
@@ -324,13 +342,15 @@ layout_resize_check(struct window *w, struct layout_cell *lc,
status = options_get_number(w->options, "pane-border-status");
if (lc->type == LAYOUT_WINDOWPANE) {
/* Space available in this cell only. */
minimum = PANE_MINIMUM;
if (type == LAYOUT_LEFTRIGHT)
if (type == LAYOUT_LEFTRIGHT) {
available = lc->sx;
else {
minimum = PANE_MINIMUM;
} else {
available = lc->sy;
if (status != PANE_STATUS_OFF)
minimum += layout_need_status(lc, status);
if (layout_add_border(w, lc, status))
minimum = PANE_MINIMUM + 1;
else
minimum = PANE_MINIMUM;
}
if (available > minimum)
available -= minimum;
@@ -873,9 +893,10 @@ layout_split_pane(struct window_pane *wp, enum layout_type type, int size,
return (NULL);
break;
case LAYOUT_TOPBOTTOM:
if (layout_add_border(wp->window, lc, status))
minimum = PANE_MINIMUM * 2 + 2;
else
minimum = PANE_MINIMUM * 2 + 1;
if (status != PANE_STATUS_OFF)
minimum += layout_need_status(lc, status);
if (sy < minimum)
return (NULL);
break;
@@ -1041,9 +1062,10 @@ layout_spread_cell(struct window *w, struct layout_cell *parent)
if (parent->type == LAYOUT_LEFTRIGHT)
size = parent->sx;
else if (parent->type == LAYOUT_TOPBOTTOM) {
if (layout_add_border(w, parent, status))
size = parent->sy - 1;
else
size = parent->sy;
if (status != PANE_STATUS_OFF)
size -= layout_need_status(parent, status);
} else
return (0);
if (size < number - 1)
@@ -1061,9 +1083,10 @@ layout_spread_cell(struct window *w, struct layout_cell *parent)
change = each - (int)lc->sx;
layout_resize_adjust(w, lc, LAYOUT_LEFTRIGHT, change);
} else if (parent->type == LAYOUT_TOPBOTTOM) {
if (layout_add_border(w, lc, status))
this = each + 1;
else
this = each;
if (status != PANE_STATUS_OFF)
this += layout_need_status(lc, status);
change = this - (int)lc->sy;
layout_resize_adjust(w, lc, LAYOUT_TOPBOTTOM, change);
}