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Image grid infrastructure.

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Nicholas Marriott
2026-10-12 19:20:42 +01:00
parent 9566f6f9ca
commit e9fffcc7e9
11 changed files with 777 additions and 589 deletions
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/* $OpenBSD$ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
* Copyright (c) 2026 Michael Grant <mgrant@grant.org>
*
* 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.
*/
#ifndef TMUX_IMAGE_H
#define TMUX_IMAGE_H
#ifdef ENABLE_IMAGES
#error image support is not ready yet
struct grid;
struct grid_line;
struct image;
struct image_line;
struct image_store;
struct screen;
struct screen_write_ctx;
struct sixel_image;
/* View of all or part of an image. */
struct image_view {
/* Position and size in the image, in pixels. */
u_int x;
u_int y;
u_int width;
u_int height;
/* Size after scaling, in pixels. */
u_int scaled_width;
u_int scaled_height;
/* Destination canvas size and offset in pixels. */
u_int canvas_width;
u_int canvas_height;
u_int canvas_xoff;
u_int canvas_yoff;
/* Destination size in terminal cells. */
u_int sx;
u_int sy;
};
/* image.c */
struct image *image_create(u_int, u_int, u_int, u_int, u_int, u_int,
u_char *);
struct image *image_create_view(struct image *, struct image_view *);
struct image *image_find(u_int);
u_int image_get_id(struct image *);
void image_ref(struct image *);
void image_free(struct image *);
void image_get_size(struct image *, u_int *, u_int *);
void image_get_canvas_size(struct image *, u_int *, u_int *);
void image_get_size_in_cells(struct image *, u_int *, u_int *);
const u_char *image_get_pixels(struct image *, size_t *, size_t *);
void image_size_in_cells(u_int, u_int, u_int, u_int, u_int *,
u_int *);
/* image-grid.c */
void image_grid_add(struct grid *, struct image *, u_int, u_int,
u_int, u_int, u_int, u_int);
void image_grid_remove(struct grid *, u_int, u_int, u_int, u_int);
void image_grid_free_line(struct grid *, struct grid_line *);
void image_grid_free(struct grid *);
void image_grid_move_cells(struct grid *, u_int, u_int, u_int,
u_int);
void image_grid_duplicate_lines(struct grid *, u_int, struct grid *,
u_int, u_int);
int image_grid_line_has_images(struct grid_line *);
/* image-sixel.c */
#define SIXEL_COLOUR_REGISTERS 1024
struct sixel_image *sixel_parse(const char *, size_t, u_int, u_int, u_int);
void sixel_free(struct sixel_image *);
void sixel_log(struct sixel_image *);
void sixel_size_in_cells(struct sixel_image *, u_int *, u_int *);
struct sixel_image *sixel_scale(struct sixel_image *, u_int, u_int, u_int,
u_int, u_int, u_int, int);
char *sixel_print(struct sixel_image *, struct sixel_image *,
size_t *);
struct screen *sixel_to_screen(struct sixel_image *);
#endif /* ENABLE_IMAGES */
#endif /* TMUX_IMAGE_H */