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250 lines
5.7 KiB
C
250 lines
5.7 KiB
C
/* $Id: window-scroll.c,v 1.13 2007-11-27 19:23:34 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_scroll_init(struct window *);
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void window_scroll_resize(struct window *, u_int, u_int);
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void window_scroll_draw(
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struct window *, struct screen_draw_ctx *, u_int, u_int);
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void window_scroll_key(struct window *, int);
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void window_scroll_draw_position(struct window *, struct screen_draw_ctx *);
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void window_scroll_up_1(struct window *);
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void window_scroll_down_1(struct window *);
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void window_scroll_left_1(struct window *);
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void window_scroll_right_1(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_resize,
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window_scroll_draw,
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window_scroll_key
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};
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struct window_scroll_mode_data {
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u_int ox;
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u_int oy;
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u_int size;
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};
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void
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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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w->modedata = data = xmalloc(sizeof *data);
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data->ox = data->oy = 0;
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data->size = w->screen.hsize;
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w->screen.mode |= MODE_BACKGROUND;
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w->screen.mode &= ~MODE_BGCURSOR;
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}
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void
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window_scroll_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_scroll_draw_position(struct window *w, struct screen_draw_ctx *ctx)
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{
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struct window_scroll_mode_data *data = w->modedata;
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char *ptr, buf[32];
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size_t len;
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len = xsnprintf(
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buf, sizeof buf, "[%u,%u/%u]", data->ox, data->oy, data->size);
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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_cells(ctx, 0, 0, screen_size_x(ctx->s) - len);
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screen_draw_move_cursor(ctx, screen_size_x(ctx->s) - len, 0);
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screen_draw_set_attributes(ctx, 0, status_colour);
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}
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void
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window_scroll_draw(
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struct window *w, struct screen_draw_ctx *ctx, u_int py, u_int ny)
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{
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struct window_scroll_mode_data *data = w->modedata;
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struct screen *s = &w->screen;
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if (s->hsize != data->size) {
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data->oy += s->hsize - data->size;
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data->size = s->hsize;
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}
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if (py != 0)
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screen_draw_lines(ctx, py, ny);
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else {
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if (ny > 1)
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screen_draw_lines(ctx, py + 1, ny - 1);
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window_scroll_draw_position(w, ctx);
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}
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}
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void
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window_scroll_key(struct window *w, int key)
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{
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struct window_scroll_mode_data *data = w->modedata;
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u_int ox, oy, sx, sy;
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sx = screen_size_x(&w->screen);
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sy = screen_size_y(&w->screen);
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ox = data->ox;
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oy = data->oy;
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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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w->screen.mode &= ~MODE_BACKGROUND;
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recalculate_sizes();
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server_redraw_window(w);
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return;
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case 'h':
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case KEYC_LEFT:
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window_scroll_left_1(w);
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return;
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case 'l':
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case KEYC_RIGHT:
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window_scroll_right_1(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_scroll_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_scroll_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->oy + sy > data->size)
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data->oy = data->size;
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else
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data->oy += 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->oy < sy)
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data->oy = 0;
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else
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data->oy -= sy;
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break;
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}
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if (ox != data->ox || oy != data->oy)
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server_redraw_window(w);
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}
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void
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window_scroll_up_1(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_draw_ctx ctx;
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if (data->oy >= data->size)
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return;
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data->oy++;
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screen_draw_start_window(&ctx, w, data->ox, data->oy);
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screen_draw_move_cursor(&ctx, 0, 0);
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screen_draw_insert_lines(&ctx, 1);
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window_scroll_draw_position(w, &ctx);
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screen_draw_line(&ctx, 1);
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screen_draw_stop(&ctx);
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}
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void
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window_scroll_down_1(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_draw_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_draw_start_window(&ctx, w, data->ox, data->oy);
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screen_draw_move_cursor(&ctx, 0, 0);
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screen_draw_delete_lines(&ctx, 1);
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screen_draw_line(&ctx, screen_last_y(&w->screen));
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window_scroll_draw_position(w, &ctx);
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screen_draw_stop(&ctx);
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}
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void
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window_scroll_right_1(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_draw_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_draw_start_window(&ctx, w, data->ox, data->oy);
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for (i = 1; i < screen_size_y(&w->screen); i++) {
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screen_draw_move_cursor(&ctx, 0, i);
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screen_draw_delete_characters(&ctx, 1);
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}
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screen_draw_column(&ctx, screen_last_x(&w->screen));
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window_scroll_draw_position(w, &ctx);
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screen_draw_stop(&ctx);
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}
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void
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window_scroll_left_1(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_draw_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_draw_start_window(&ctx, w, data->ox, data->oy);
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for (i = 1; i < screen_size_y(&w->screen); i++) {
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screen_draw_move_cursor(&ctx, 0, i);
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screen_draw_insert_characters(&ctx, 1);
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}
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screen_draw_column(&ctx, 0);
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window_scroll_draw_position(w, &ctx);
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screen_draw_stop(&ctx);
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}
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