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Scrollable win for command output.
This commit is contained in:
Nicholas Marriott
294
window-more.c
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294
window-more.c
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/* $Id: window-more.c,v 1.1 2007-11-21 19:44:05 nicm Exp $ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <string.h>
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#include "tmux.h"
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void window_more_init(struct window *);
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void window_more_resize(struct window *, u_int, u_int);
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void window_more_draw(struct window *, struct buffer *, u_int, u_int);
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void window_more_key(struct window *, int);
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void window_more_draw_position(struct window *, struct screen_draw_ctx *);
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void window_more_draw_line(struct window *, struct screen_draw_ctx *, u_int);
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void window_more_up_1(struct window *);
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void window_more_down_1(struct window *);
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const struct window_mode window_more_mode = {
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window_more_init,
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window_more_resize,
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window_more_draw,
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window_more_key
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};
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struct window_more_mode_data {
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ARRAY_DECL(, char *) list;
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u_int top;
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};
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void
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window_more_vadd(struct window *w, const char *fmt, va_list ap)
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{
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struct window_more_mode_data *data = w->modedata;
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char *s;
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xvasprintf(&s, fmt, ap);
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ARRAY_ADD(&data->list, s);
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}
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void
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window_more_add(struct window *w, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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window_more_vadd(w, fmt, ap);
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va_end(ap);
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}
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void
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window_more_init(struct window *w)
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{
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struct window_more_mode_data *data;
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w->modedata = data = xmalloc(sizeof *data);
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ARRAY_INIT(&data->list);
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data->top = 0;
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}
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void
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window_more_resize(unused struct window *w, unused u_int sx, unused u_int sy)
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{
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}
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void
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window_more_draw_position(struct window *w, struct screen_draw_ctx *ctx)
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{
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struct window_more_mode_data *data = w->modedata;
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char *ptr, buf[32];
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size_t len;
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char *line;
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size_t n;
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len = xsnprintf(
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buf, sizeof buf, "[%u/%u]", data->top, ARRAY_LENGTH(&data->list));
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if (len <= screen_size_x(ctx->s))
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ptr = buf;
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else {
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ptr = buf + len - screen_size_x(ctx->s);
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len -= len - screen_size_x(ctx->s);
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}
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screen_draw_move(ctx, 0, 0);
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if (data->top < ARRAY_LENGTH(&data->list)) {
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line = ARRAY_ITEM(&data->list, data->top);
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n = strlen(line);
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if (n > screen_size_x(ctx->s) - len)
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n = screen_size_x(ctx->s) - len;
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buffer_write(ctx->b, line, n);
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} else
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n = 0;
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for (; n < screen_size_x(ctx->s) - len; n++)
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input_store8(ctx->b, SCREEN_DEFDATA);
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screen_draw_move(ctx, screen_size_x(ctx->s) - len, 0);
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screen_draw_set_attributes(ctx, 0, status_colour);
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buffer_write(ctx->b, buf, len);
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}
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void
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window_more_draw_line(struct window *w, struct screen_draw_ctx *ctx, u_int py)
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{
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struct window_more_mode_data *data = w->modedata;
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char *line;
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size_t n;
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u_int p;
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screen_draw_move(ctx, 0, py);
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screen_draw_set_attributes(ctx, SCREEN_DEFATTR, SCREEN_DEFCOLR);
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p = data->top + py;
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if (p >= ARRAY_LENGTH(&data->list)) {
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input_store_zero(ctx->b, CODE_CLEARLINE);
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return;
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}
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line = ARRAY_ITEM(&data->list, p);
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n = strlen(line);
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if (n > screen_size_x(ctx->s))
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n = screen_size_x(ctx->s);
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buffer_write(ctx->b, line, n);
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for (; n < screen_size_x(ctx->s); n++)
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input_store8(ctx->b, SCREEN_DEFDATA);
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}
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void
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window_more_draw(struct window *w, struct buffer *b, u_int py, u_int ny)
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{
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struct screen *s = &w->screen;
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struct screen_draw_ctx ctx;
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u_int i;
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screen_draw_start(&ctx, s, b, 0, 0);
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for (i = py; i < py + ny; i++) {
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if (i == 0)
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continue;
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window_more_draw_line(w, &ctx, i);
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}
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if (py == 0)
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window_more_draw_position(w, &ctx);
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screen_draw_stop(&ctx);
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input_store_zero(b, CODE_CURSOROFF);
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}
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void
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window_more_key(struct window *w, int key)
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{
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struct window_more_mode_data *data = w->modedata;
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u_int top, sy;
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sy = screen_size_y(&w->screen);
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top = data->top;
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switch (key) {
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case 'Q':
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case 'q':
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w->mode = NULL;
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xfree(w->modedata);
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recalculate_sizes();
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server_redraw_window_all(w);
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return;
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case 'k':
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case 'K':
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case KEYC_UP:
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window_more_up_1(w);
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return;
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case 'j':
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case 'J':
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case KEYC_DOWN:
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window_more_down_1(w);
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return;
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case '\025': /* C-u */
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case KEYC_PPAGE:
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if (data->top < sy)
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data->top = 0;
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else
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data->top -= sy;
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break;
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case '\006': /* C-f */
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case KEYC_NPAGE:
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if (data->top + sy > ARRAY_LENGTH(&data->list))
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data->top = ARRAY_LENGTH(&data->list);
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else
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data->top += sy;
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break;
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}
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if (top != data->top)
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server_redraw_window_all(w);
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}
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void
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window_more_up_1(struct window *w)
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{
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struct window_more_mode_data *data = w->modedata;
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struct screen *s = &w->screen;
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struct screen_draw_ctx ctx;
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struct client *c;
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u_int i;
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struct hdr hdr;
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size_t size;
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if (data->top == 0)
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return;
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data->top--;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c == NULL || c->session == NULL)
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continue;
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if (!session_has(c->session, w))
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continue;
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buffer_ensure(c->out, sizeof hdr);
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buffer_add(c->out, sizeof hdr);
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size = BUFFER_USED(c->out);
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screen_draw_start(&ctx, s, c->out, 0, 0);
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screen_draw_move(&ctx, 0, 0);
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input_store_one(c->out, CODE_INSERTLINE, 1);
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window_more_draw_position(w, &ctx);
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window_more_draw_line(w, &ctx, 1);
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screen_draw_stop(&ctx);
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input_store_zero(c->out, CODE_CURSOROFF);
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size = BUFFER_USED(c->out) - size;
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hdr.type = MSG_DATA;
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hdr.size = size;
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memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
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}
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}
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void
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window_more_down_1(struct window *w)
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{
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struct window_more_mode_data *data = w->modedata;
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struct screen *s = &w->screen;
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struct screen_draw_ctx ctx;
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struct client *c;
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u_int i;
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struct hdr hdr;
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size_t size;
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if (data->top >= ARRAY_LENGTH(&data->list))
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return;
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data->top++;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c == NULL || c->session == NULL)
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continue;
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if (!session_has(c->session, w))
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continue;
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buffer_ensure(c->out, sizeof hdr);
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buffer_add(c->out, sizeof hdr);
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size = BUFFER_USED(c->out);
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screen_draw_start(&ctx, s, c->out, 0, 0);
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screen_draw_move(&ctx, 0, 0);
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input_store_one(c->out, CODE_DELETELINE, 1);
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window_more_draw_line(w, &ctx, screen_last_y(s));
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window_more_draw_position(w, &ctx);
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screen_draw_stop(&ctx);
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input_store_zero(c->out, CODE_CURSOROFF);
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size = BUFFER_USED(c->out) - size;
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hdr.type = MSG_DATA;
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hdr.size = size;
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memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
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}
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}
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