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/* $OpenBSD: window-more.c,v 1.6 2009/07/28 07:03:32 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <string.h>
#include "tmux.h"
struct screen *window_more_init(struct window_pane *);
void window_more_free(struct window_pane *);
void window_more_resize(struct window_pane *, u_int, u_int);
void window_more_key(struct window_pane *, struct client *, int);
void window_more_redraw_screen(struct window_pane *);
void window_more_write_line(
struct window_pane *, struct screen_write_ctx *, u_int);
void window_more_scroll_up(struct window_pane *);
void window_more_scroll_down(struct window_pane *);
const struct window_mode window_more_mode = {
window_more_init,
window_more_free,
window_more_resize,
window_more_key,
NULL,
NULL,
};
struct window_more_mode_data {
struct screen screen;
struct mode_key_data mdata;
ARRAY_DECL(, char *) list;
u_int top;
};
void
window_more_vadd(struct window_pane *wp, const char *fmt, va_list ap)
{
struct window_more_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
struct screen_write_ctx ctx;
char *msg;
u_int size;
xvasprintf(&msg, fmt, ap);
ARRAY_ADD(&data->list, msg);
screen_write_start(&ctx, wp, NULL);
size = ARRAY_LENGTH(&data->list) - 1;
if (size >= data->top && size <= data->top + screen_size_y(s) - 1) {
window_more_write_line(wp, &ctx, size - data->top);
if (size != data->top)
window_more_write_line(wp, &ctx, 0);
} else
window_more_write_line(wp, &ctx, 0);
screen_write_stop(&ctx);
}
struct screen *
window_more_init(struct window_pane *wp)
{
struct window_more_mode_data *data;
struct screen *s;
int keys;
wp->modedata = data = xmalloc(sizeof *data);
ARRAY_INIT(&data->list);
data->top = 0;
s = &data->screen;
screen_init(s, screen_size_x(&wp->base), screen_size_y(&wp->base), 0);
s->mode &= ~MODE_CURSOR;
keys = options_get_number(&wp->window->options, "mode-keys");
if (keys == MODEKEY_EMACS)
mode_key_init(&data->mdata, &mode_key_tree_emacs_choice);
else
mode_key_init(&data->mdata, &mode_key_tree_vi_choice);
return (s);
}
void
window_more_free(struct window_pane *wp)
{
struct window_more_mode_data *data = wp->modedata;
u_int i;
for (i = 0; i < ARRAY_LENGTH(&data->list); i++)
xfree(ARRAY_ITEM(&data->list, i));
ARRAY_FREE(&data->list);
screen_free(&data->screen);
xfree(data);
}
void
window_more_resize(struct window_pane *wp, u_int sx, u_int sy)
{
struct window_more_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
screen_resize(s, sx, sy);
window_more_redraw_screen(wp);
}
void
window_more_key(struct window_pane *wp, unused struct client *c, int key)
{
struct window_more_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
switch (mode_key_lookup(&data->mdata, key)) {
case MODEKEYCHOICE_CANCEL:
window_pane_reset_mode(wp);
break;
case MODEKEYCHOICE_UP:
window_more_scroll_up(wp);
break;
case MODEKEYCHOICE_DOWN:
window_more_scroll_down(wp);
break;
case MODEKEYCHOICE_PAGEUP:
if (data->top < screen_size_y(s))
data->top = 0;
else
data->top -= screen_size_y(s);
window_more_redraw_screen(wp);
break;
case MODEKEYCHOICE_PAGEDOWN:
if (data->top + screen_size_y(s) > ARRAY_LENGTH(&data->list))
data->top = ARRAY_LENGTH(&data->list);
else
data->top += screen_size_y(s);
window_more_redraw_screen(wp);
break;
default:
break;
}
}
void
window_more_write_line(
struct window_pane *wp, struct screen_write_ctx *ctx, u_int py)
{
struct window_more_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
struct grid_cell gc;
char *msg, hdr[32];
size_t size;
int utf8flag;
utf8flag = options_get_number(&wp->window->options, "utf8");
memcpy(&gc, &grid_default_cell, sizeof gc);
if (py == 0) {
size = xsnprintf(hdr, sizeof hdr,
"[%u/%u]", data->top, ARRAY_LENGTH(&data->list));
screen_write_cursormove(ctx, screen_size_x(s) - size, 0);
gc.bg = options_get_number(&wp->window->options, "mode-fg");
gc.fg = options_get_number(&wp->window->options, "mode-bg");
gc.attr |= options_get_number(&wp->window->options, "mode-attr");
screen_write_puts(ctx, &gc, "%s", hdr);
memcpy(&gc, &grid_default_cell, sizeof gc);
} else
size = 0;
screen_write_cursormove(ctx, 0, py);
if (data->top + py < ARRAY_LENGTH(&data->list)) {
msg = ARRAY_ITEM(&data->list, data->top + py);
screen_write_nputs(
ctx, screen_size_x(s) - 1 - size, &gc, utf8flag, "%s", msg);
}
while (s->cx < screen_size_x(s) - size)
screen_write_putc(ctx, &gc, ' ');
}
void
window_more_redraw_screen(struct window_pane *wp)
{
struct window_more_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
struct screen_write_ctx ctx;
u_int i;
screen_write_start(&ctx, wp, NULL);
for (i = 0; i < screen_size_y(s); i++)
window_more_write_line(wp, &ctx, i);
screen_write_stop(&ctx);
}
void
window_more_scroll_up(struct window_pane *wp)
{
struct window_more_mode_data *data = wp->modedata;
struct screen_write_ctx ctx;
if (data->top == 0)
return;
data->top--;
screen_write_start(&ctx, wp, NULL);
screen_write_cursormove(&ctx, 0, 0);
screen_write_insertline(&ctx, 1);
window_more_write_line(wp, &ctx, 0);
window_more_write_line(wp, &ctx, 1);
screen_write_stop(&ctx);
}
void
window_more_scroll_down(struct window_pane *wp)
{
struct window_more_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
struct screen_write_ctx ctx;
if (data->top >= ARRAY_LENGTH(&data->list))
return;
data->top++;
screen_write_start(&ctx, wp, NULL);
screen_write_cursormove(&ctx, 0, 0);
screen_write_deleteline(&ctx, 1);
window_more_write_line(wp, &ctx, screen_size_y(s) - 1);
window_more_write_line(wp, &ctx, 0);
screen_write_stop(&ctx);
}
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