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Expose image backend flags

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This commit is contained in:
Michael Grant
2026-08-08 10:21:30 +01:00
parent db7ec915ea
commit 5c9ae058bf
4 changed files with 10 additions and 18 deletions
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17
image.c
View File

@@ -87,9 +87,6 @@ static u_int image_next_id;
static u_short image_next_grid_id;
static struct image *image_grid_ids[USHRT_MAX + 1];
#define IMAGE_BACKEND_GRAPHICAL 0x1
#define IMAGE_BACKEND_SCROLLS 0x2
struct image_backend {
const char *name;
int flags;
@@ -151,20 +148,12 @@ image_redraw_start(struct tty *tty, u_int x, u_int y, u_int width,
kitty_redraw_start(tty, x, y, width, height);
}
/* Return if a terminal can draw graphical images. */
/* Return the flags for a terminal's image backend. */
int
image_tty_is_graphical(struct tty *tty)
image_backend_flags(struct tty *tty)
{
image_tty_update(tty);
return (!!(tty->image_backend->flags & IMAGE_BACKEND_GRAPHICAL));
}
/* Return if image output advances the terminal screen. */
int
image_tty_scrolls(struct tty *tty)
{
image_tty_update(tty);
return (!!(tty->image_backend->flags & IMAGE_BACKEND_SCROLLS));
return (tty->image_backend->flags);
}
/* Discard image backend state after a terminal geometry change. */

6
tmux.h
View File

@@ -4235,6 +4235,9 @@ char *regsub(const char *, const char *, const char *, int);
#ifdef ENABLE_IMAGES
/* image.c */
#define IMAGE_BACKEND_GRAPHICAL 0x1
#define IMAGE_BACKEND_SCROLLS 0x2
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 *, u_int, u_int, u_int,
@@ -4267,8 +4270,7 @@ void image_redraw_area(struct screen_write_ctx *, u_int, u_int,
void image_redraw_all(struct screen_write_ctx *);
void image_redraw_scroll(struct screen_write_ctx *, u_int);
void image_redraw_start(struct tty *, u_int, u_int, u_int, u_int);
int image_tty_is_graphical(struct tty *);
int image_tty_scrolls(struct tty *);
int image_backend_flags(struct tty *);
void image_tty_update(struct tty *);
void image_tty_geometry_changed(struct tty *);
void image_tty_free(struct tty *, int);

3
tty-draw.c
View File

@@ -264,7 +264,8 @@ tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx,
*/
if (gc.flags & GRID_FLAG_IMAGE) {
im = image_find(gc.image_id);
if (image_tty_is_graphical(tty)) {
if (image_backend_flags(tty) &
IMAGE_BACKEND_GRAPHICAL) {
memcpy(&image_gc, &gc,
sizeof image_gc);
image_gc.flags &= ~(GRID_FLAG_IMAGE|

2
tty.c
View File

@@ -2158,7 +2158,7 @@ tty_cell(struct tty *tty, const struct grid_cell *gc,
* selection; the unchanged image would then need to be drawn again.
*/
if (gc->flags & GRID_FLAG_IMAGE) {
if (image_tty_is_graphical(tty))
if (image_backend_flags(tty) & IMAGE_BACKEND_GRAPHICAL)
return;
im = image_find(gc->image_id);
image_get_fallback_cell(tty, im, gc->image_x, gc->image_y, gc,