mirror of
https://github.com/tmux/tmux.git
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269 lines
6.7 KiB
C
269 lines
6.7 KiB
C
/* $Id: window-scroll.c,v 1.21 2008-07-02 21:22:57 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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struct screen *window_scroll_init(struct window *);
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void window_scroll_free(struct window *);
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void window_scroll_resize(struct window *, u_int, u_int);
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void window_scroll_key(struct window *, struct client *, int);
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void window_scroll_redraw_screen(struct window *);
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void window_scroll_write_line(
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struct window *, struct screen_write_ctx *, u_int);
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void window_scroll_write_column(
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struct window *, struct screen_write_ctx *, u_int);
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void window_scroll_scroll_up(struct window *);
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void window_scroll_scroll_down(struct window *);
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void window_scroll_scroll_left(struct window *);
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void window_scroll_scroll_right(struct window *);
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const struct window_mode window_scroll_mode = {
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window_scroll_init,
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window_scroll_free,
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window_scroll_resize,
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window_scroll_key
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};
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struct window_scroll_mode_data {
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struct screen screen;
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u_int ox;
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u_int oy;
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};
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struct screen *
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window_scroll_init(struct window *w)
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{
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struct window_scroll_mode_data *data;
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struct screen *s;
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struct screen_write_ctx ctx;
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u_int i;
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w->modedata = data = xmalloc(sizeof *data);
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data->ox = 0;
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data->oy = 0;
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s = &data->screen;
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screen_create(s, screen_size_x(&w->base), screen_size_y(&w->base), 0);
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s->mode &= ~MODE_CURSOR;
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screen_write_start(&ctx, s, NULL, NULL);
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for (i = 0; i < screen_size_y(s); i++)
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window_scroll_write_line(w, &ctx, i);
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screen_write_stop(&ctx);
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return (s);
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}
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void
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window_scroll_free(struct window *w)
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{
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struct window_scroll_mode_data *data = w->modedata;
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screen_destroy(&data->screen);
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xfree(data);
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}
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void
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window_scroll_resize(struct window *w, u_int sx, u_int sy)
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{
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struct window_scroll_mode_data *data = w->modedata;
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struct screen *s = &data->screen;
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screen_resize(s, sx, sy);
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screen_display_copy_area(&data->screen, &w->base,
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0, 0, screen_size_x(s), screen_size_y(s), data->ox, data->oy);
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}
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void
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window_scroll_key(struct window *w, struct client *c, int key)
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{
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struct window_scroll_mode_data *data = w->modedata;
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struct screen *s = &data->screen;
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int table;
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table = options_get_number(&c->session->options, "mode-keys");
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switch (mode_key_lookup(table, key)) {
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case MODEKEY_QUIT:
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window_reset_mode(w);
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break;
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case MODEKEY_LEFT:
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window_scroll_scroll_left(w);
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break;
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case MODEKEY_RIGHT:
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window_scroll_scroll_right(w);
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break;
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case MODEKEY_UP:
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window_scroll_scroll_up(w);
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break;
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case MODEKEY_DOWN:
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window_scroll_scroll_down(w);
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break;
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case MODEKEY_PPAGE:
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if (data->oy + screen_size_y(s) > w->base.hsize)
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data->oy = w->base.hsize;
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else
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data->oy += screen_size_y(s);
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window_scroll_redraw_screen(w);
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break;
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case MODEKEY_NPAGE:
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if (data->oy < screen_size_y(s))
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data->oy = 0;
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else
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data->oy -= screen_size_y(s);
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window_scroll_redraw_screen(w);
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break;
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default:
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break;
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}
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}
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void
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window_scroll_write_line(
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struct window *w, struct screen_write_ctx *ctx, u_int py)
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{
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struct window_scroll_mode_data *data = w->modedata;
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struct screen *s = &data->screen;
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size_t size;
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if (py == 0) {
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screen_write_set_attributes(
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ctx, ATTR_BRIGHT|ATTR_REVERSE, 0x88);
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screen_write_move_cursor(ctx, 0, 0);
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size = screen_write_put_string_rjust(
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ctx, "[%u,%u/%u]", data->ox, data->oy, w->base.hsize);
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} else
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size = 0;
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screen_write_move_cursor(ctx, 0, py);
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screen_write_copy_area(
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ctx, &w->base, screen_size_x(s) - size, 1, data->ox, data->oy);
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}
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void
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window_scroll_write_column(
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struct window *w, struct screen_write_ctx *ctx, u_int px)
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{
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struct window_scroll_mode_data *data = w->modedata;
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struct screen *s = &data->screen;
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screen_write_move_cursor(ctx, px, 0);
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screen_write_copy_area(
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ctx, &w->base, 1, screen_size_y(s), data->ox, data->oy);
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}
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void
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window_scroll_redraw_screen(struct window *w)
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{
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struct window_scroll_mode_data *data = w->modedata;
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struct screen *s = &data->screen;
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struct screen_write_ctx ctx;
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u_int i;
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screen_write_start_window(&ctx, w);
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for (i = 0; i < screen_size_y(s); i++)
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window_scroll_write_line(w, &ctx, i);
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screen_write_stop(&ctx);
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}
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void
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window_scroll_scroll_up(struct window *w)
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{
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struct window_scroll_mode_data *data = w->modedata;
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struct screen_write_ctx ctx;
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if (data->oy >= w->base.hsize)
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return;
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data->oy++;
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screen_write_start_window(&ctx, w);
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screen_write_move_cursor(&ctx, 0, 0);
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screen_write_insert_lines(&ctx, 1);
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window_scroll_write_line(w, &ctx, 0);
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window_scroll_write_line(w, &ctx, 1);
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screen_write_stop(&ctx);
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}
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void
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window_scroll_scroll_down(struct window *w)
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{
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struct window_scroll_mode_data *data = w->modedata;
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struct screen *s = &data->screen;
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struct screen_write_ctx ctx;
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if (data->oy == 0)
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return;
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data->oy--;
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screen_write_start_window(&ctx, w);
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screen_write_move_cursor(&ctx, 0, 0);
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screen_write_delete_lines(&ctx, 1);
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window_scroll_write_line(w, &ctx, screen_last_y(s));
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window_scroll_write_line(w, &ctx, 0);
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screen_write_stop(&ctx);
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}
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void
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window_scroll_scroll_right(struct window *w)
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{
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struct window_scroll_mode_data *data = w->modedata;
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struct screen *s = &data->screen;
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struct screen_write_ctx ctx;
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u_int i;
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if (data->ox >= SHRT_MAX)
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return;
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data->ox++;
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screen_write_start_window(&ctx, w);
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for (i = 1; i < screen_size_y(s); i++) {
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screen_write_move_cursor(&ctx, 0, i);
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screen_write_delete_characters(&ctx, 1);
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}
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window_scroll_write_column(w, &ctx, screen_last_x(s));
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window_scroll_write_line(w, &ctx, 0);
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screen_write_stop(&ctx);
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}
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void
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window_scroll_scroll_left(struct window *w)
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{
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struct window_scroll_mode_data *data = w->modedata;
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struct screen *s = &data->screen;
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struct screen_write_ctx ctx;
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u_int i;
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if (data->ox == 0)
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return;
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data->ox--;
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screen_write_start_window(&ctx, w);
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for (i = 1; i < screen_size_y(s); i++) {
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screen_write_move_cursor(&ctx, 0, i);
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screen_write_insert_characters(&ctx, 1);
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}
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window_scroll_write_column(w, &ctx, 0);
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window_scroll_write_line(w, &ctx, 0);
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screen_write_stop(&ctx);
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}
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