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/* $Id: window-scroll.c,v 1.6 2007-11-21 15:55:02 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"
void window_scroll_init(struct window *);
void window_scroll_resize(struct window *, u_int, u_int);
void window_scroll_draw(struct window *, struct buffer *, u_int, u_int);
void window_scroll_key(struct window *, int);
void window_scroll_up_1(struct window *);
void window_scroll_down_1(struct window *);
const struct window_mode window_scroll_mode = {
window_scroll_init,
window_scroll_resize,
window_scroll_draw,
window_scroll_key
};
struct window_scroll_mode_data {
u_int ox;
u_int oy;
u_int size;
};
void
window_scroll_init(struct window *w)
{
struct window_scroll_mode_data *data;
w->modedata = data = xmalloc(sizeof *data);
data->ox = data->oy = 0;
data->size = w->screen.hsize;
}
void
window_scroll_resize(unused struct window *w, unused u_int sx, unused u_int sy)
{
}
void
window_scroll_draw(struct window *w, struct buffer *b, u_int py, u_int ny)
{
struct window_scroll_mode_data *data = w->modedata;
struct screen *s = &w->screen;
char buf[32];
size_t len;
if (s->hsize != data->size) {
data->ox += s->hsize - data->size;
data->size = s->hsize;
}
screen_draw(s, b, py, ny, data->ox, data->oy);
input_store_zero(b, CODE_CURSOROFF);
if (py == 0 && ny > 0) {
len = screen_size_x(s);
if (len > (sizeof buf) - 1)
len = (sizeof buf) - 1;
len = xsnprintf(
buf, len + 1, "[%u,%u/%u]", data->ox, data->oy, s->hsize);
input_store_two(
b, CODE_CURSORMOVE, 0, screen_size_x(s) - len + 1);
input_store_two(b, CODE_ATTRIBUTES, 0, status_colour);
buffer_write(b, buf, len);
}
}
void
window_scroll_key(struct window *w, int key)
{
struct window_scroll_mode_data *data = w->modedata;
u_int ox, oy, sx, sy;
sx = screen_size_x(&w->screen);
sy = screen_size_y(&w->screen);
ox = data->ox;
oy = data->oy;
switch (key) {
case 'Q':
case 'q':
w->mode = NULL;
xfree(w->modedata);
recalculate_sizes();
server_redraw_window_all(w);
return;
case 'h':
case KEYC_LEFT:
if (data->ox > 0)
data->ox--;
break;
case 'l':
case KEYC_RIGHT:
if (data->ox < SHRT_MAX)
data->ox++;
break;
case 'k':
case 'K':
case KEYC_UP:
window_scroll_up_1(w);
return;
case 'j':
case 'J':
case KEYC_DOWN:
if (data->oy > 0)
data->oy--;
break;
case '\025':
case KEYC_PPAGE:
if (data->oy + sy > data->size)
data->oy = data->size;
else
data->oy += sy;
break;
case '\006':
case KEYC_NPAGE:
if (data->oy < sy)
data->oy = 0;
else
data->oy -= sy;
break;
}
if (ox != data->ox || oy != data->oy)
server_redraw_window_all(w);
}
void
window_scroll_up_1(struct window *w)
{
struct window_scroll_mode_data *data = w->modedata;
struct screen *s = &w->screen;
struct client *c;
u_int i;
struct hdr hdr;
size_t size;
if (data->oy >= data->size)
return;
data->oy++;
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c == NULL || c->session == NULL)
continue;
if (!session_has(c->session, w))
continue;
buffer_ensure(c->out, sizeof hdr);
buffer_add(c->out, sizeof hdr);
size = BUFFER_USED(c->out);
input_store_two(c->out, CODE_CURSORMOVE, 1, screen_size_y(s));
input_store_one(c->out, CODE_INSERTLINE, 1);
/* Redraw the top two lines to nuke the position display too. */
window_scroll_draw(w, c->out, 0, 2);
size = BUFFER_USED(c->out) - size;
hdr.type = MSG_DATA;
hdr.size = size;
memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
}
}
void
window_scroll_down_1(struct window *w)
{
struct window_scroll_mode_data *data = w->modedata;
struct screen *s = &w->screen;
struct client *c;
u_int i;
struct hdr hdr;
size_t size;
if (data->oy == 0)
return;
data->oy--;
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c == NULL || c->session == NULL)
continue;
if (!session_has(c->session, w))
continue;
buffer_ensure(c->out, sizeof hdr);
buffer_add(c->out, sizeof hdr);
size = BUFFER_USED(c->out);
input_store_two(c->out, CODE_CURSORMOVE, 1, 1);
input_store_one(c->out, CODE_DELETELINE, 1);
input_store_two(c->out, CODE_CURSORMOVE, 1, screen_size_y(s));
window_scroll_draw(w, c->out, screen_last_y(s), 1);
size = BUFFER_USED(c->out) - size;
hdr.type = MSG_DATA;
hdr.size = size;
memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
}
}
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