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Move alternate screen into the screen rather than the pane.

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This commit is contained in:
nicm
2020-03-31 07:00:34 +00:00
parent eedf059d00
commit 3bbd66c013
7 changed files with 127 additions and 107 deletions
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86
window.c
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@ -879,10 +879,6 @@ window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
wp->pipe_off = 0;
wp->pipe_event = NULL;
wp->saved_grid = NULL;
wp->saved_cx = UINT_MAX;
wp->saved_cy = UINT_MAX;
screen_init(&wp->base, sx, sy, hlimit);
wp->screen = &wp->base;
@ -891,8 +887,6 @@ window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
if (gethostname(host, sizeof host) == 0)
screen_set_title(&wp->base, host);
wp->ictx = input_init(wp);
return (wp);
}
@ -906,14 +900,12 @@ window_pane_destroy(struct window_pane *wp)
bufferevent_free(wp->event);
close(wp->fd);
}
input_free(wp->ictx);
if (wp->ictx != NULL)
input_free(wp->ictx);
screen_free(&wp->status_screen);
screen_free(&wp->base);
if (wp->saved_grid != NULL)
grid_destroy(wp->saved_grid);
if (wp->pipe_fd != -1) {
bufferevent_free(wp->pipe_event);
@ -974,6 +966,7 @@ window_pane_set_event(struct window_pane *wp)
wp->event = bufferevent_new(wp->fd, window_pane_read_callback,
NULL, window_pane_error_callback, wp);
wp->ictx = input_init(wp, wp->event);
bufferevent_setwatermark(wp->event, EV_READ, 0, READ_SIZE);
bufferevent_enable(wp->event, EV_READ|EV_WRITE);
@ -990,7 +983,7 @@ window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
wp->sy = sy;
log_debug("%s: %%%u resize %ux%u", __func__, wp->id, sx, sy);
screen_resize(&wp->base, sx, sy, wp->saved_grid == NULL);
screen_resize(&wp->base, sx, sy, wp->base.saved_grid == NULL);
wme = TAILQ_FIRST(&wp->modes);
if (wme != NULL && wme->mode->resize != NULL)
@ -999,90 +992,23 @@ window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
wp->flags |= (PANE_RESIZE|PANE_RESIZED);
}
/*
* Enter alternative screen mode. A copy of the visible screen is saved and the
* history is not updated
*/
void
window_pane_alternate_on(struct window_pane *wp, struct grid_cell *gc,
int cursor)
{
struct screen *s = &wp->base;
u_int sx, sy;
if (wp->saved_grid != NULL)
return;
if (!options_get_number(wp->options, "alternate-screen"))
return;
sx = screen_size_x(s);
sy = screen_size_y(s);
wp->saved_grid = grid_create(sx, sy, 0);
grid_duplicate_lines(wp->saved_grid, 0, s->grid, screen_hsize(s), sy);
if (cursor) {
wp->saved_cx = s->cx;
wp->saved_cy = s->cy;
}
memcpy(&wp->saved_cell, gc, sizeof wp->saved_cell);
grid_view_clear(s->grid, 0, 0, sx, sy, 8);
wp->base.grid->flags &= ~GRID_HISTORY;
screen_alternate_on(&wp->base, gc, cursor);
wp->flags |= PANE_REDRAW;
}
/* Exit alternate screen mode and restore the copied grid. */
void
window_pane_alternate_off(struct window_pane *wp, struct grid_cell *gc,
int cursor)
{
struct screen *s = &wp->base;
u_int sx, sy;
if (!options_get_number(wp->options, "alternate-screen"))
return;
/*
* Restore the cursor position and cell. This happens even if not
* currently in the alternate screen.
*/
if (cursor && wp->saved_cx != UINT_MAX && wp->saved_cy != UINT_MAX) {
s->cx = wp->saved_cx;
if (s->cx > screen_size_x(s) - 1)
s->cx = screen_size_x(s) - 1;
s->cy = wp->saved_cy;
if (s->cy > screen_size_y(s) - 1)
s->cy = screen_size_y(s) - 1;
memcpy(gc, &wp->saved_cell, sizeof *gc);
}
if (wp->saved_grid == NULL)
return;
sx = screen_size_x(s);
sy = screen_size_y(s);
/*
* If the current size is bigger, temporarily resize to the old size
* before copying back.
*/
if (sy > wp->saved_grid->sy)
screen_resize(s, sx, wp->saved_grid->sy, 1);
/* Restore the saved grid. */
grid_duplicate_lines(s->grid, screen_hsize(s), wp->saved_grid, 0, sy);
/*
* Turn history back on (so resize can use it) and then resize back to
* the current size.
*/
wp->base.grid->flags |= GRID_HISTORY;
if (sy > wp->saved_grid->sy || sx != wp->saved_grid->sx)
screen_resize(s, sx, sy, 1);
grid_destroy(wp->saved_grid);
wp->saved_grid = NULL;
screen_alternate_off(&wp->base, gc, cursor);
wp->flags |= PANE_REDRAW;
}