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135 lines
2.9 KiB
C
135 lines
2.9 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
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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 <stdlib.h>
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#include "tmux.h"
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static struct images all_images = TAILQ_HEAD_INITIALIZER(all_images);
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static u_int all_images_count;
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static void
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image_free(struct image *im)
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{
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struct screen *s = im->s;
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TAILQ_REMOVE(&all_images, im, all_entry);
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all_images_count--;
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TAILQ_REMOVE(&s->images, im, entry);
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free(im);
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}
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int
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image_free_all(struct screen *s)
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{
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struct image *im, *im1;
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int redraw = !TAILQ_EMPTY(&s->images);
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TAILQ_FOREACH_SAFE(im, &s->images, entry, im1)
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image_free(im);
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return (redraw);
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}
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void
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image_store(struct screen *s, struct sixel_image *si)
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{
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struct image *im;
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im = xcalloc(1, sizeof *im);
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im->s = s;
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im->data = si;
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im->px = s->cx;
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im->py = s->cy;
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sixel_size_in_cells(si, &im->sx, &im->sy);
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TAILQ_INSERT_TAIL(&s->images, im, entry);
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TAILQ_INSERT_TAIL(&all_images, im, all_entry);
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if (++all_images_count == 10/*XXX*/)
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image_free(TAILQ_FIRST(&all_images));
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}
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int
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image_check_line(struct screen *s, u_int py, u_int ny)
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{
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struct image *im, *im1;
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int redraw = 0;
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TAILQ_FOREACH_SAFE(im, &s->images, entry, im1) {
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if (py + ny > im->py && py < im->py + im->sy) {
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image_free(im);
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redraw = 1;
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}
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}
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return (redraw);
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}
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int
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image_check_area(struct screen *s, u_int px, u_int py, u_int nx, u_int ny)
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{
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struct image *im, *im1;
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int redraw = 0;
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TAILQ_FOREACH_SAFE(im, &s->images, entry, im1) {
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if (py + ny <= im->py || py >= im->py + im->sy)
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continue;
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if (px + nx <= im->px || px >= im->px + im->sx)
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continue;
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image_free(im);
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redraw = 1;
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}
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return (redraw);
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}
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int
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image_scroll_up(struct screen *s, u_int lines)
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{
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struct image *im, *im1;
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int redraw = 0;
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u_int sx, sy;
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struct sixel_image *new;
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TAILQ_FOREACH_SAFE(im, &s->images, entry, im1) {
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if (im->py >= lines) {
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im->py -= lines;
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redraw = 1;
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continue;
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}
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if (im->py + im->sy <= lines) {
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image_free(im);
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redraw = 1;
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continue;
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}
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sx = im->sx;
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sy = (im->py + im->sy) - lines;
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new = sixel_scale(im->data, 0, 0, 0, im->sy - sy, sx, sy, 1);
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sixel_free(im->data);
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im->data = new;
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im->py = 0;
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sixel_size_in_cells(im->data, &im->sx, &im->sy);
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redraw = 1;
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}
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return (redraw);
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}
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