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Some more image redraw bits.

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This commit is contained in:
Nicholas Marriott
2026-10-13 21:05:08 +01:00
parent 198b0e6933
commit 2c64f131a9
4 changed files with 202 additions and 2 deletions
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79
image-grid.c
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@@ -380,3 +380,82 @@ image_grid_line_has_images(struct grid_line *gl)
{
return (gl->images != NULL && !TAILQ_EMPTY(&gl->images->spans));
}
/* Check whether a grid area has any image spans. */
int
image_grid_area_has_images(struct grid *gd, u_int x, u_int y, u_int sx,
u_int sy)
{
struct image_line *line;
struct image_span *span;
u_int row, end;
if (gd->images == NULL)
return (0);
if (sx == 0 || sy == 0 || y >= gd->hsize + gd->sy)
return (0);
end = x + sx;
if (end < x)
end = UINT_MAX;
if (sy > gd->hsize + gd->sy - y)
sy = gd->hsize + gd->sy - y;
for (row = y; row < y + sy; row++) {
line = gd->linedata[row].images;
if (line == NULL)
continue;
TAILQ_FOREACH(span, &line->spans, line_entry) {
if (span->x < end && span->x + span->sx > x)
return (1);
}
}
return (0);
}
/* Record window damage when an area containing images changes. */
void
image_redraw_area(struct screen_write_ctx *ctx, u_int x, u_int y, u_int sx,
u_int sy)
{
struct window_pane *wp = ctx->wp;
struct grid *gd = ctx->s->grid;
if (wp == NULL)
return;
if (!image_grid_area_has_images(gd, x, gd->hsize + y, sx, sy))
return;
redraw_damage_window(wp->window, wp->xoff + x, wp->yoff + y, sx, sy);
}
/* Record window damage for all visible images. */
void
image_redraw_all(struct screen_write_ctx *ctx)
{
struct screen *s = ctx->s;
u_int sx = screen_size_x(s), sy = screen_size_y(s);
image_redraw_area(ctx, 0, 0, sx, sy);
}
/* Record window damage for images in the scroll region. */
void
image_redraw_scroll(struct screen_write_ctx *ctx)
{
struct screen *s = ctx->s;
u_int sx = screen_size_x(s), sy = s->rlower - s->rupper + 1;
image_redraw_area(ctx, 0, s->rupper, sx, sy);
}
/* Redraw images under changed cells. */
void
image_damage_screen(struct screen_write_ctx *ctx, u_int x, u_int y, u_int sx,
u_int sy)
{
struct screen *s = ctx->s;
image_redraw_area(ctx, x, y, sx, sy);
if (ctx->flags & SCREEN_WRITE_INPUT)
image_grid_remove(s->grid, x, s->grid->hsize + y, sx, sy);
}