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Instead of fixing with the cursor position when the copied screen is

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created, resize it and let the resize/reflow code fix it up and return
it. Solves various problems with cursor position and resizing when in
copy mode. With Anindya Mukherjee.
This commit is contained in:
nicm
2020-04-15 17:50:02 +00:00
parent 1e72f5ea43
commit 53a29a2ffa
3 changed files with 88 additions and 62 deletions
Download Patch File Download Diff File Expand all files Collapse all files

82
screen.c
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@ -48,9 +48,8 @@ struct screen_title_entry {
};
TAILQ_HEAD(screen_titles, screen_title_entry);
static void screen_resize_y(struct screen *, u_int);
static void screen_reflow(struct screen *, u_int);
static void screen_resize_y(struct screen *, u_int, int);
static void screen_reflow(struct screen *, u_int, u_int *, u_int *);
/* Free titles stack. */
static void
@ -216,10 +215,23 @@ screen_pop_title(struct screen *s)
}
}
/* Resize screen. */
/* Resize screen and return cursor position. */
void
screen_resize(struct screen *s, u_int sx, u_int sy, int reflow)
screen_resize_cursor(struct screen *s, u_int sx, u_int sy, int reflow,
int eat_empty, u_int *cx, u_int *cy)
{
u_int tcx, tcy;
if (cx == NULL)
cx = &tcx;
*cx = s->cx;
if (cy == NULL)
cy = т
*cy = s->grid->hsize + s->cy;
log_debug("%s: start %u,%u (%u,%u)", __func__, s->cx, s->cy, *cx, *cy);
if (sx < 1)
sx = 1;
if (sy < 1)
@ -232,14 +244,30 @@ screen_resize(struct screen *s, u_int sx, u_int sy, int reflow)
reflow = 0;
if (sy != screen_size_y(s))
screen_resize_y(s, sy);
screen_resize_y(s, sy, eat_empty);
if (reflow)
screen_reflow(s, sx);
screen_reflow(s, sx, cx, cy);
if (*cy >= s->grid->hsize) {
s->cx = *cx;
s->cy = (*cy) - s->grid->hsize;
} else {
s->cx = 0;
s->cy = 0;
}
log_debug("%s: finish %u,%u (%u,%u)", __func__, s->cx, s->cy, *cx, *cy);
}
/* Resize screen. */
void
screen_resize(struct screen *s, u_int sx, u_int sy, int reflow)
{
screen_resize_cursor(s, sx, sy, reflow, 1, NULL, NULL);
}
static void
screen_resize_y(struct screen *s, u_int sy)
screen_resize_y(struct screen *s, u_int sy, int eat_empty)
{
struct grid *gd = s->grid;
u_int needed, available, oldy, i;
@ -264,14 +292,16 @@ screen_resize_y(struct screen *s, u_int sy)
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,
8);
if (eat_empty) {
available = oldy - 1 - s->cy;
if (available > 0) {
if (available > needed)
available = needed;
grid_view_delete_lines(gd, oldy - available,
available, 8);
}
needed -= available;
}
needed -= available;
/*
* Now just increase the history size, if possible, to take
@ -287,7 +317,6 @@ screen_resize_y(struct screen *s, u_int sy)
available = needed;
grid_view_delete_lines(gd, 0, available, 8);
}
s->cy -= needed;
}
/* Resize line array. */
@ -307,7 +336,6 @@ screen_resize_y(struct screen *s, u_int sy)
available = needed;
gd->hscrolled -= available;
gd->hsize -= available;
s->cy += available;
} else
available = 0;
needed -= available;
@ -482,25 +510,17 @@ screen_select_cell(struct screen *s, struct grid_cell *dst,
/* Reflow wrapped lines. */
static void
screen_reflow(struct screen *s, u_int new_x)
screen_reflow(struct screen *s, u_int new_x, u_int *cx, u_int *cy)
{
u_int cx = s->cx, cy = s->grid->hsize + s->cy, wx, wy;
u_int wx, wy;
grid_wrap_position(s->grid, cx, cy, &wx, &wy);
log_debug("%s: cursor %u,%u is %u,%u", __func__, cx, cy, wx, wy);
grid_wrap_position(s->grid, *cx, *cy, &wx, &wy);
log_debug("%s: cursor %u,%u is %u,%u", __func__, *cx, *cy, wx, wy);
grid_reflow(s->grid, new_x);
grid_unwrap_position(s->grid, &cx, &cy, wx, wy);
log_debug("%s: new cursor is %u,%u", __func__, cx, cy);
if (cy >= s->grid->hsize) {
s->cx = cx;
s->cy = cy - s->grid->hsize;
} else {
s->cx = 0;
s->cy = 0;
}
grid_unwrap_position(s->grid, cx, cy, wx, wy);
log_debug("%s: new cursor is %u,%u", __func__, *cx,* cy);
}
/*