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mirror of https://github.com/rkd77/elinks.git synced 2024-06-12 23:10:51 +00:00
elinks/src/terminal/window.c
2022-06-17 15:55:05 +02:00

244 lines
5.1 KiB
C

/** Terminal windows stuff.
* @file */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "elinks.h"
#include "bfu/dialog.h"
#include "bfu/menu.h"
#include "terminal/event.h"
#include "terminal/tab.h"
#include "terminal/terminal.h"
#include "terminal/window.h"
#include "util/error.h"
#include "util/memory.h"
void
redraw_windows(enum windows_to_redraw which, struct window *win)
{
struct terminal *term = win->term;
struct term_event ev;
struct window *end;
enum term_redrawing_state saved_redraw_state = term->redrawing;
switch (which) {
case REDRAW_IN_FRONT_OF_WINDOW:
win = win->prev;
/* fall through */
case REDRAW_WINDOW_AND_FRONT:
end = (struct window *) &term->windows;
if (term->redrawing != TREDRAW_READY) return;
term->redrawing = TREDRAW_BUSY;
break;
case REDRAW_BEHIND_WINDOW:
end = win;
win = (struct window *) term->windows.prev;
if (term->redrawing == TREDRAW_DELAYED) return;
term->redrawing = TREDRAW_DELAYED;
break;
default:
ERROR("invalid enum windows_to_redraw: which==%d", (int) which);
return;
}
set_redraw_term_event(&ev, term->width, term->height);
for (; win != end; win = win->prev) {
if (!inactive_tab(win))
win->handler(win, &ev);
}
term->redrawing = saved_redraw_state;
}
void
add_window(struct terminal *term, window_handler_T handler, void *data)
{
struct term_event ev;
struct window *win = (struct window *)mem_calloc(1, sizeof(*win));
if (!win) {
mem_free_if(data);
return;
}
win->handler = handler;
win->data = data; /* freed later in delete_window() */
win->term = term;
win->type = WINDOW_NORMAL;
add_at_pos((struct window *) &term->windows, win);
set_init_term_event(&ev, term->width, term->height);
win->handler(win, &ev);
}
void
delete_window(struct window *win)
{
struct term_event ev;
/* Updating the status when destroying tabs needs this before the win
* handler call. */
del_from_list(win);
set_abort_term_event(&ev);
win->handler(win, &ev);
mem_free_if(win->data);
redraw_terminal(win->term);
mem_free(win);
}
void
delete_window_ev(struct window *win, struct term_event *ev)
{
struct window *w;
w = list_has_next(win->term->windows, win) ? win->next : NULL;
delete_window(win);
if (!ev || !w) return;
/* If next is a tab send it to the current tab */
if (w->type == WINDOW_TAB) {
w = get_current_tab(w->term);
}
if (w) w->handler(w, ev);
}
void
get_parent_ptr(struct window *win, int *x, int *y)
{
struct window *parent = win->next;
if (parent->type == WINDOW_TAB)
parent = get_tab_by_number(win->term, win->term->current_tab);
if (parent) {
*x = parent->x;
*y = parent->y;
} else {
*x = 0;
*y = 0;
}
}
struct ewd {
void (*fn)(void *);
void *data;
unsigned int called_once:1;
};
static void
empty_window_handler(struct window *win, struct term_event *ev)
{
struct terminal *term = win->term;
struct ewd *ewd = (struct ewd *)win->data;
void (*fn)(void *) = ewd->fn;
void *data = ewd->data;
if (ewd->called_once) return;
switch (ev->ev) {
case EVENT_INIT:
case EVENT_RESIZE:
case EVENT_REDRAW:
get_parent_ptr(win, &win->x, &win->y);
return;
case EVENT_ABORT:
fn(data);
return;
case EVENT_KBD:
case EVENT_MOUSE:
/* Silence compiler warnings */
break;
}
ewd->called_once = 1;
delete_window(win);
fn(data);
term_send_event(term, ev);
}
void
add_empty_window(struct terminal *term, void (*fn)(void *), void *data)
{
struct ewd *ewd = (struct ewd *)mem_alloc(sizeof(*ewd));
if (!ewd) return;
ewd->fn = fn;
ewd->data = data;
ewd->called_once = 0;
add_window(term, empty_window_handler, ewd);
}
#if CONFIG_DEBUG
/** Check that terminal.windows are in the documented order. */
void
assert_window_stacking(struct terminal *term)
{
enum { WANT_ANY, WANT_TAB, WANT_NONE } want = WANT_ANY;
const struct window *win;
const struct window *main_menu_win;
/* The main menu can be either above or below the tabs. */
main_menu_win = term->main_menu ? term->main_menu->win : NULL;
foreach (win, term->windows) {
switch (want) {
case WANT_ANY:
if (win->type == WINDOW_TAB)
want = WANT_TAB;
break;
case WANT_TAB:
if (win == main_menu_win)
want = WANT_NONE;
else
assert(win->type == WINDOW_TAB);
break;
case WANT_NONE:
assert(0);
break;
}
}
}
#endif /* CONFIG_DEBUG */
void
set_dlg_window_ptr(struct dialog_data *dlg_data, struct window *window, int x, int y)
{
struct el_box *box = &dlg_data->real_box;
if (box->height) {
int y_max = box->y + box->height;
y -= dlg_data->y;
if (y < box->y || y >= y_max) return;
}
set_window_ptr(window, x, y);
}
#ifdef CONFIG_SCRIPTING_SPIDERMONKEY
/** Check whether keypress events would be directed to @a win. */
int
would_window_receive_keypresses(const struct window *win)
{
struct terminal *const term = win->term;
const struct window *selected;
/* At least @win must be in the list. */
assert(!list_empty(term->windows));
if_assert_failed return 0;
selected = (const struct window *)term->windows.next;
if (selected->type != WINDOW_TAB) return 0;
selected = get_current_tab(term);
if (selected != win) return 0;
return 1;
}
#endif /* CONFIG_SCRIPTING_SPIDERMONKEY */