diff options
Diffstat (limited to 'usr.bin/tmux/window-scroll.c')
| -rw-r--r-- | usr.bin/tmux/window-scroll.c | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/usr.bin/tmux/window-scroll.c b/usr.bin/tmux/window-scroll.c new file mode 100644 index 00000000000..14d01e3637b --- /dev/null +++ b/usr.bin/tmux/window-scroll.c @@ -0,0 +1,296 @@ +/* $OpenBSD: window-scroll.c,v 1.1 2009/06/01 22:58:49 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_scroll_init(struct window_pane *); +void window_scroll_free(struct window_pane *); +void window_scroll_resize(struct window_pane *, u_int, u_int); +void window_scroll_key(struct window_pane *, struct client *, int); + +void window_scroll_redraw_screen(struct window_pane *); +void window_scroll_write_line( + struct window_pane *, struct screen_write_ctx *, u_int); +void window_scroll_write_column( + struct window_pane *, struct screen_write_ctx *, u_int); + +void window_scroll_scroll_up(struct window_pane *); +void window_scroll_scroll_down(struct window_pane *); +void window_scroll_scroll_left(struct window_pane *); +void window_scroll_scroll_right(struct window_pane *); + +const struct window_mode window_scroll_mode = { + window_scroll_init, + window_scroll_free, + window_scroll_resize, + window_scroll_key, + NULL, + NULL, +}; + +struct window_scroll_mode_data { + struct screen screen; + + struct mode_key_data mdata; + + u_int ox; + u_int oy; +}; + +struct screen * +window_scroll_init(struct window_pane *wp) +{ + struct window_scroll_mode_data *data; + struct screen *s; + struct screen_write_ctx ctx; + u_int i; + + wp->modedata = data = xmalloc(sizeof *data); + data->ox = 0; + data->oy = 0; + + s = &data->screen; + screen_init(s, screen_size_x(&wp->base), screen_size_y(&wp->base), 0); + s->mode &= ~MODE_CURSOR; + + mode_key_init(&data->mdata, + options_get_number(&wp->window->options, "mode-keys"), 0); + + screen_write_start(&ctx, NULL, s); + for (i = 0; i < screen_size_y(s); i++) + window_scroll_write_line(wp, &ctx, i); + screen_write_stop(&ctx); + + return (s); +} + +void +window_scroll_free(struct window_pane *wp) +{ + struct window_scroll_mode_data *data = wp->modedata; + + mode_key_free(&data->mdata); + + screen_free(&data->screen); + xfree(data); +} + +void +window_scroll_pageup(struct window_pane *wp) +{ + struct window_scroll_mode_data *data = wp->modedata; + struct screen *s = &data->screen; + + if (data->oy + screen_size_y(s) > screen_hsize(&wp->base)) + data->oy = screen_hsize(&wp->base); + else + data->oy += screen_size_y(s); + + window_scroll_redraw_screen(wp); +} + +void +window_scroll_resize(struct window_pane *wp, u_int sx, u_int sy) +{ + struct window_scroll_mode_data *data = wp->modedata; + struct screen *s = &data->screen; + struct screen_write_ctx ctx; + u_int i; + + screen_resize(s, sx, sy); + screen_write_start(&ctx, NULL, s); + for (i = 0; i < screen_size_y(s); i++) + window_scroll_write_line(wp, &ctx, i); + screen_write_stop(&ctx); +} + +void +window_scroll_key(struct window_pane *wp, unused struct client *c, int key) +{ + struct window_scroll_mode_data *data = wp->modedata; + struct screen *s = &data->screen; + + switch (mode_key_lookup(&data->mdata, key)) { + case MODEKEYCMD_QUIT: + window_pane_reset_mode(wp); + break; + case MODEKEYCMD_LEFT: + window_scroll_scroll_left(wp); + break; + case MODEKEYCMD_RIGHT: + window_scroll_scroll_right(wp); + break; + case MODEKEYCMD_UP: + window_scroll_scroll_up(wp); + break; + case MODEKEYCMD_DOWN: + window_scroll_scroll_down(wp); + break; + case MODEKEYCMD_PREVIOUSPAGE: + window_scroll_pageup(wp); + break; + case MODEKEYCMD_NEXTPAGE: + if (data->oy < screen_size_y(s)) + data->oy = 0; + else + data->oy -= screen_size_y(s); + window_scroll_redraw_screen(wp); + break; + default: + break; + } +} + +void +window_scroll_write_line( + struct window_pane *wp, struct screen_write_ctx *ctx, u_int py) +{ + struct window_scroll_mode_data *data = wp->modedata; + struct screen *s = &data->screen; + struct grid_cell gc; + char hdr[32]; + size_t size; + + if (py == 0) { + memcpy(&gc, &grid_default_cell, sizeof gc); + size = xsnprintf(hdr, sizeof hdr, + "[%u,%u/%u]", data->ox, data->oy, screen_hsize(&wp->base)); + 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_cursormove(ctx, screen_size_x(s) - size, 0); + screen_write_puts(ctx, &gc, "%s", hdr); + memcpy(&gc, &grid_default_cell, sizeof gc); + } else + size = 0; + + screen_write_cursormove(ctx, 0, py); + screen_write_copy(ctx, &wp->base, data->ox, (screen_hsize(&wp->base) - + data->oy) + py, screen_size_x(s) - size, 1); +} + +void +window_scroll_write_column( + struct window_pane *wp, struct screen_write_ctx *ctx, u_int px) +{ + struct window_scroll_mode_data *data = wp->modedata; + struct screen *s = &data->screen; + + screen_write_cursormove(ctx, px, 0); + screen_write_copy(ctx, &wp->base, data->ox + px, + screen_hsize(&wp->base) - data->oy, 1, screen_size_y(s)); +} + +void +window_scroll_redraw_screen(struct window_pane *wp) +{ + struct window_scroll_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_scroll_write_line(wp, &ctx, i); + screen_write_stop(&ctx); +} + +void +window_scroll_scroll_up(struct window_pane *wp) +{ + struct window_scroll_mode_data *data = wp->modedata; + struct screen_write_ctx ctx; + + if (data->oy >= screen_hsize(&wp->base)) + return; + data->oy++; + + screen_write_start(&ctx, wp, NULL); + screen_write_cursormove(&ctx, 0, 0); + screen_write_insertline(&ctx, 1); + window_scroll_write_line(wp, &ctx, 0); + window_scroll_write_line(wp, &ctx, 1); + screen_write_stop(&ctx); +} + +void +window_scroll_scroll_down(struct window_pane *wp) +{ + struct window_scroll_mode_data *data = wp->modedata; + struct screen *s = &data->screen; + struct screen_write_ctx ctx; + + if (data->oy == 0) + return; + data->oy--; + + screen_write_start(&ctx, wp, NULL); + screen_write_cursormove(&ctx, 0, 0); + screen_write_deleteline(&ctx, 1); + window_scroll_write_line(wp, &ctx, screen_size_y(s) - 1); + window_scroll_write_line(wp, &ctx, 0); + screen_write_stop(&ctx); +} + +void +window_scroll_scroll_right(struct window_pane *wp) +{ + struct window_scroll_mode_data *data = wp->modedata; + struct screen *s = &data->screen; + struct screen_write_ctx ctx; + u_int i; + + if (data->ox >= SHRT_MAX) + return; + data->ox++; + + screen_write_start(&ctx, wp, NULL); + for (i = 1; i < screen_size_y(s); i++) { + screen_write_cursormove(&ctx, 0, i); + screen_write_deletecharacter(&ctx, 1); + } + window_scroll_write_column(wp, &ctx, screen_size_x(s) - 1); + window_scroll_write_line(wp, &ctx, 0); + screen_write_stop(&ctx); +} + +void +window_scroll_scroll_left(struct window_pane *wp) +{ + struct window_scroll_mode_data *data = wp->modedata; + struct screen *s = &data->screen; + struct screen_write_ctx ctx; + u_int i; + + if (data->ox == 0) + return; + data->ox--; + + screen_write_start(&ctx, wp, NULL); + for (i = 1; i < screen_size_y(s); i++) { + screen_write_cursormove(&ctx, 0, i); + screen_write_insertcharacter(&ctx, 1); + } + window_scroll_write_column(wp, &ctx, 0); + window_scroll_write_line(wp, &ctx, 0); + screen_write_stop(&ctx); +} |