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/*
* Copyright (C) 2012-2025 Robin Haberkorn
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <glib.h>
#include <curses.h>
#include "list.h"
#include "string-utils.h"
#include "interface.h"
#include "curses-utils.h"
#include "curses-info-popup.h"
#include "curses-icons.h"
/*
* FIXME: This is redundant with gtk-info-popup.c.
*/
typedef struct {
teco_stailq_entry_t entry;
teco_popup_entry_type_t type;
teco_string_t name;
gboolean highlight;
} teco_popup_entry_t;
void
teco_curses_info_popup_add(teco_curses_info_popup_t *ctx, teco_popup_entry_type_t type,
const gchar *name, gsize name_len, gboolean highlight)
{
if (G_UNLIKELY(!ctx->chunk))
ctx->chunk = g_string_chunk_new(32);
/*
* FIXME: Test with g_slice_new()...
* It could however cause problems upon command-line termination
* and may not be measurably faster.
*/
teco_popup_entry_t *entry = g_new(teco_popup_entry_t, 1);
entry->type = type;
/*
* Popup entries aren't removed individually, so we can
* more efficiently store them via GStringChunk.
*/
teco_string_init_chunk(&entry->name, name, name_len, ctx->chunk);
entry->highlight = highlight;
teco_stailq_insert_tail(&ctx->list, &entry->entry);
ctx->longest = MAX(ctx->longest, (gint)name_len);
ctx->length++;
}
static void
teco_curses_info_popup_init_pad(teco_curses_info_popup_t *ctx, attr_t attr)
{
int cols = getmaxx(stdscr); /**! screen width */
int pad_lines; /**! pad height */
gint pad_cols; /**! entry columns */
gint pad_colwidth; /**! width per entry column */
/*
* With Unicode icons enabled, we reserve 2 characters at the beginning and one
* after the filename/directory.
* Otherwise 2 characters after the entry.
*/
gint reserve = teco_ed & TECO_ED_ICONS ? 2+1 : 2;
pad_colwidth = MIN(ctx->longest + reserve, cols - 2);
/* pad_cols = floor((cols - 2) / pad_colwidth) */
pad_cols = (cols - 2) / pad_colwidth;
/* pad_lines = ceil(length / pad_cols) */
pad_lines = (ctx->length+pad_cols-1) / pad_cols;
/*
* Render the entire autocompletion list into a pad
* which can be higher than the physical screen.
* The pad uses two columns less than the screen since
* it will be drawn into the popup window which has left
* and right borders.
*/
ctx->pad = newpad(pad_lines, cols - 2);
wbkgd(ctx->pad, ' ' | attr);
/*
* cur_col is the row currently written.
* It does not wrap but grows indefinitely.
* Therefore the real current row is (cur_col % popup_cols)
*/
gint cur_col = 0;
for (teco_stailq_entry_t *cur = ctx->list.first; cur != NULL; cur = cur->next) {
teco_popup_entry_t *entry = (teco_popup_entry_t *)cur;
gint cur_line = cur_col/pad_cols + 1;
wmove(ctx->pad, cur_line-1,
(cur_col % pad_cols)*pad_colwidth);
wattrset(ctx->pad, entry->highlight ? A_BOLD : A_NORMAL);
switch (entry->type) {
case TECO_POPUP_FILE:
g_assert(!teco_string_contains(&entry->name, '\0'));
if (teco_ed & TECO_ED_ICONS) {
teco_curses_add_wc(ctx->pad, teco_curses_icons_lookup_file(entry->name.data));
waddch(ctx->pad, ' ');
}
teco_curses_format_filename(ctx->pad, entry->name.data, -1);
break;
case TECO_POPUP_DIRECTORY:
g_assert(!teco_string_contains(&entry->name, '\0'));
if (teco_ed & TECO_ED_ICONS) {
teco_curses_add_wc(ctx->pad, teco_curses_icons_lookup_dir(entry->name.data));
waddch(ctx->pad, ' ');
}
teco_curses_format_filename(ctx->pad, entry->name.data, -1);
break;
default:
teco_curses_format_str(ctx->pad, entry->name.data, entry->name.len, -1);
break;
}
cur_col++;
}
}
void
teco_curses_info_popup_show(teco_curses_info_popup_t *ctx, attr_t attr)
{
if (!ctx->length)
/* nothing to display */
return;
int lines, cols; /* screen dimensions */
getmaxyx(stdscr, lines, cols);
if (ctx->window)
delwin(ctx->window);
if (!ctx->pad)
teco_curses_info_popup_init_pad(ctx, attr);
gint pad_lines = getmaxy(ctx->pad);
/*
* Popup window can cover all but one screen row.
* Another row is reserved for the top border.
*/
gint popup_lines = MIN(pad_lines + 1, lines - 1);
/* window covers message, scintilla and info windows */
ctx->window = newwin(popup_lines, 0, lines - 1 - popup_lines, 0);
wbkgdset(ctx->window, ' ' | attr);
wborder(ctx->window,
ACS_VLINE,
ACS_VLINE, /* may be overwritten with scrollbar */
ACS_HLINE,
' ', /* no bottom line */
ACS_ULCORNER, ACS_URCORNER,
ACS_VLINE, ACS_VLINE);
copywin(ctx->pad, ctx->window,
ctx->pad_first_line, 0,
1, 1, popup_lines - 1, cols - 2, FALSE);
if (pad_lines <= popup_lines - 1)
/* no need for scrollbar */
return;
/* bar_height = ceil((popup_lines-1)/pad_lines * (popup_lines-2)) */
gint bar_height = ((popup_lines-1)*(popup_lines-2) + pad_lines-1) /
pad_lines;
/* bar_y = floor(pad_first_line/pad_lines * (popup_lines-2)) + 1 */
gint bar_y = ctx->pad_first_line*(popup_lines-2) / pad_lines + 1;
mvwvline(ctx->window, 1, cols-1, ACS_CKBOARD, popup_lines-2);
/*
* We do not use ACS_BLOCK here since it will not
* always be drawn as a solid block (e.g. xterm).
* Instead, simply draw reverse blanks.
*/
wmove(ctx->window, bar_y, cols-1);
wattron(ctx->window, A_REVERSE);
wvline(ctx->window, ' ', bar_height);
/* progress scroll position */
ctx->pad_first_line += popup_lines - 1;
/* wrap on last shown page */
ctx->pad_first_line %= pad_lines;
if (pad_lines - ctx->pad_first_line < popup_lines - 1)
/* show last page */
ctx->pad_first_line = pad_lines - (popup_lines - 1);
}
void
teco_curses_info_popup_clear(teco_curses_info_popup_t *ctx)
{
if (ctx->window)
delwin(ctx->window);
if (ctx->pad)
delwin(ctx->pad);
if (ctx->chunk)
g_string_chunk_free(ctx->chunk);
teco_stailq_entry_t *entry;
while ((entry = teco_stailq_remove_head(&ctx->list)))
g_free(entry);
teco_curses_info_popup_init(ctx);
}
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