tmux/window-more.c

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/* $Id: window-more.c,v 1.19 2008-09-25 20:08:57 nicm Exp $ */
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/*
* 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"
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struct screen *window_more_init(struct window *);
void window_more_free(struct window *);
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void window_more_resize(struct window *, u_int, u_int);
void window_more_key(struct window *, struct client *, int);
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void window_more_redraw_screen(struct window *);
void window_more_write_line(
struct window *, struct screen_write_ctx *, u_int);
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void window_more_scroll_up(struct window *);
void window_more_scroll_down(struct window *);
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const struct window_mode window_more_mode = {
window_more_init,
window_more_free,
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window_more_resize,
window_more_key
};
struct window_more_mode_data {
struct screen screen;
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ARRAY_DECL(, char *) list;
u_int top;
};
void
window_more_vadd(struct window *w, const char *fmt, va_list ap)
{
struct window_more_mode_data *data = w->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);
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screen_write_start_window(&ctx, w);
size = ARRAY_LENGTH(&data->list) - 1;
if (size >= data->top && size <= data->top + screen_size_y(s) - 1) {
window_more_write_line(w, &ctx, size - data->top);
if (size != data->top)
window_more_write_line(w, &ctx, 0);
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} else
window_more_write_line(w, &ctx, 0);
screen_write_stop(&ctx);
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}
void
window_more_add(struct window *w, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
window_more_vadd(w, fmt, ap);
va_end(ap);
}
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struct screen *
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window_more_init(struct window *w)
{
struct window_more_mode_data *data;
struct screen *s;
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w->modedata = data = xmalloc(sizeof *data);
ARRAY_INIT(&data->list);
data->top = 0;
s = &data->screen;
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screen_init(s, screen_size_x(&w->base), screen_size_y(&w->base), 0);
s->mode &= ~MODE_CURSOR;
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return (s);
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}
void
window_more_free(struct window *w)
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{
struct window_more_mode_data *data = w->modedata;
u_int i;
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for (i = 0; i < ARRAY_LENGTH(&data->list); i++)
xfree(ARRAY_ITEM(&data->list, i));
ARRAY_FREE(&data->list);
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screen_free(&data->screen);
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xfree(data);
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}
void
window_more_resize(struct window *w, u_int sx, u_int sy)
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{
struct window_more_mode_data *data = w->modedata;
struct screen *s = &data->screen;
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screen_resize(s, sx, sy);
window_more_redraw_screen(w);
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}
void
window_more_key(struct window *w, struct client *c, int key)
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{
struct window_more_mode_data *data = w->modedata;
struct screen *s = &data->screen;
int table;
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table = options_get_number(&c->session->options, "mode-keys");
switch (mode_key_lookup(table, key)) {
case MODEKEY_QUIT:
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window_reset_mode(w);
break;
case MODEKEY_UP:
window_more_scroll_up(w);
break;
case MODEKEY_DOWN:
window_more_scroll_down(w);
break;
case MODEKEY_PPAGE:
if (data->top < screen_size_y(s))
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data->top = 0;
else
data->top -= screen_size_y(s);
window_more_redraw_screen(w);
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break;
case MODEKEY_NPAGE:
if (data->top + screen_size_y(s) > ARRAY_LENGTH(&data->list))
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data->top = ARRAY_LENGTH(&data->list);
else
data->top += screen_size_y(s);
window_more_redraw_screen(w);
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break;
default:
break;
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}
}
void
window_more_write_line(struct window *w, struct screen_write_ctx *ctx, u_int py)
{
struct window_more_mode_data *data = w->modedata;
struct screen *s = &data->screen;
struct grid_cell gc;
char *msg, hdr[32];
size_t size;
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.attr |= GRID_ATTR_BRIGHT|GRID_ATTR_REVERSE;
screen_write_puts(ctx, &gc, "%s", hdr);
gc.attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_REVERSE);
} 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_puts(
ctx, &gc, "%.*s", (int) (screen_size_x(s) - size), msg);
}
while (s->cx < screen_size_x(s) - size)
screen_write_putc(ctx, &gc, ' ');
}
void
window_more_redraw_screen(struct window *w)
{
struct window_more_mode_data *data = w->modedata;
struct screen *s = &data->screen;
struct screen_write_ctx ctx;
u_int i;
screen_write_start_window(&ctx, w);
for (i = 0; i < screen_size_y(s); i++)
window_more_write_line(w, &ctx, i);
screen_write_stop(&ctx);
}
void
window_more_scroll_up(struct window *w)
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{
struct window_more_mode_data *data = w->modedata;
struct screen_write_ctx ctx;
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if (data->top == 0)
return;
data->top--;
screen_write_start_window(&ctx, w);
screen_write_cursormove(&ctx, 0, 0);
screen_write_insertline(&ctx, 1);
window_more_write_line(w, &ctx, 0);
window_more_write_line(w, &ctx, 1);
screen_write_stop(&ctx);
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}
void
window_more_scroll_down(struct window *w)
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{
struct window_more_mode_data *data = w->modedata;
struct screen *s = &data->screen;
struct screen_write_ctx ctx;
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if (data->top >= ARRAY_LENGTH(&data->list))
return;
data->top++;
screen_write_start_window(&ctx, w);
screen_write_cursormove(&ctx, 0, 0);
screen_write_deleteline(&ctx, 1);
window_more_write_line(w, &ctx, screen_size_y(s) - 1);
window_more_write_line(w, &ctx, 0);
screen_write_stop(&ctx);
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}