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Check image size against available screen size properly, GitHub issue 4739.

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This commit is contained in:
Nicholas Marriott
2025-12-18 13:44:17 +00:00
parent fe645c5bcc
commit 54202fcaad
1 changed files with 7 additions and 6 deletions
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13
screen-write.c
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@@ -2367,8 +2367,11 @@ screen_write_sixelimage(struct screen_write_ctx *ctx, struct sixel_image *si,
u_int x, y, sx, sy, cx = s->cx, cy = s->cy, i, lines;
struct sixel_image *new;
if (screen_size_y(s) == 1)
return;
sixel_size_in_cells(si, &x, &y);
if (x > screen_size_x(s) || y > screen_size_y(s)) {
if (x > screen_size_x(s) || y > screen_size_y(s) - 1) {
if (x > screen_size_x(s) - cx)
sx = screen_size_x(s) - cx;
else
@@ -2379,12 +2382,10 @@ screen_write_sixelimage(struct screen_write_ctx *ctx, struct sixel_image *si,
sy = y;
new = sixel_scale(si, 0, 0, 0, y - sy, sx, sy, 1);
sixel_free(si);
si = new;
/* Bail out if the image cannot be scaled. */
if (si == NULL)
if (new == NULL)
return;
sixel_size_in_cells(si, &x, &y);
sixel_size_in_cells(new, &x, &y);
si = new;
}
sy = screen_size_y(s) - cy;