/* $OpenBSD: window-scroll.c,v 1.1 2009/06/01 22:58:49 nicm Exp $ */ /* * Copyright (c) 2007 Nicholas Marriott * * 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 #include #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); }