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This commit is contained in:
Thomas Adam
2026-03-06 18:17:20 +00:00
parent 9c3ec2b8eb
commit 1cf7889fd7
11 changed files with 194 additions and 200 deletions
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87
image-kitty.c
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@@ -23,6 +23,41 @@
#include "tmux.h"
/*
* kitty_image stores the raw decoded pixel data and metadata from a kitty
* graphics protocol APC sequence. It is used to re-emit the sequence to the
* outer terminal on redraw.
*/
struct kitty_image {
/* Control-data fields parsed from the APC sequence. */
char action; /* a=: 'T'=transmit+display, 't', 'p', 'd' */
u_int format; /* f=: 32=RGBA, 24=RGB, 100=PNG */
char medium; /* t=: 'd'=direct, 'f'=file, 't'=tmp, 's'=shm */
u_int pixel_w; /* s=: source image pixel width */
u_int pixel_h; /* v=: source image pixel height */
u_int cols; /* c=: display columns (0=auto) */
u_int rows; /* r=: display rows (0=auto) */
u_int image_id; /* i=: image id (0=unassigned) */
u_int image_num; /* I=: image number */
u_int placement_id; /* p=: placement id */
u_int more; /* m=: 1=more chunks coming, 0=last */
u_int quiet; /* q=: suppress responses */
int z_index; /* z=: z-index */
char compression; /* o=: 'z'=zlib, 0=none */
char delete_what; /* d=: delete target (used with a=d) */
/* Cell size at the time of parsing (from the owning window). */
u_int xpixel;
u_int ypixel;
/* Original base64-encoded payload (concatenated across all chunks). */
char *encoded;
size_t encodedlen;
char *ctrl;
size_t ctrllen;
};
/*
* Parse control-data key=value pairs from a kitty APC sequence.
* Format: key=value,key=value,...
@@ -190,6 +225,52 @@ kitty_free(struct kitty_image *ki)
free(ki);
}
/*
* Get the size in cells of a kitty image. If cols/rows are 0 (auto),
* calculate from pixel dimensions. Returns size via sx/sy pointers.
*/
void
kitty_size_in_cells(struct kitty_image *ki, u_int *sx, u_int *sy)
{
*sx = ki->cols;
*sy = ki->rows;
/*
* If cols/rows are 0, they mean "auto" - calculate from
* pixel dimensions.
*/
if (*sx == 0 && ki->pixel_w > 0 && ki->xpixel > 0) {
*sx = (ki->pixel_w + ki->xpixel - 1) / ki->xpixel;
}
if (*sy == 0 && ki->pixel_h > 0 && ki->ypixel > 0) {
*sy = (ki->pixel_h + ki->ypixel - 1) / ki->ypixel;
}
/* If still 0, use a reasonable default */
if (*sx == 0)
*sx = 10;
if (*sy == 0)
*sy = 10;
}
char
kitty_get_action(struct kitty_image *ki)
{
return (ki->action);
}
u_int
kitty_get_image_id(struct kitty_image *ki)
{
return (ki->image_id);
}
u_int
kitty_get_rows(struct kitty_image *ki)
{
return (ki->rows);
}
/*
* Serialize a kitty_image back into an APC escape sequence for transmission
* to the terminal. This recreates the original command that was parsed.
@@ -238,9 +319,7 @@ kitty_delete_all(size_t *outlen)
{
char *out;
*outlen = 3 + 7 + 2;
out = xmalloc(*outlen + 1);
memcpy(out, "\033_Ga=d,d=a\033\\", *outlen);
out[*outlen] = '\0';
out = xstrdup("\033_Ga=d,d=a\033\\");
*outlen = strlen(out);
return (out);
}