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[cairo-path-fixed] Consolidate cairo_path_buf_t when copying.

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When copying the cairo_path_fixed_t, consolidate the list of
dynamically allocated cairo_path_buf_t into a single buffer.
This commit is contained in:
Chris Wilson 2007-11-14 00:45:24 +00:00
parent e0187ad49b
commit e82b0f46b2
1 changed files with 25 additions and 8 deletions
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33
src/cairo-path-fixed.c
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@ -91,6 +91,7 @@ _cairo_path_fixed_init_copy (cairo_path_fixed_t *path,
cairo_path_fixed_t *other)
{
cairo_path_buf_t *buf, *other_buf;
unsigned int num_points, num_ops, buf_size;
_cairo_path_fixed_init (path);
@ -106,21 +107,37 @@ _cairo_path_fixed_init_copy (cairo_path_fixed_t *path,
other->buf_head.base.num_ops * sizeof (other->buf_head.op[0]));
memcpy (path->buf_head.points, other->buf_head.points,
other->buf_head.base.num_points * sizeof (other->buf_head.points[0]));
num_points = num_ops = 0;
for (other_buf = other->buf_head.base.next;
other_buf;
other_buf != NULL;
other_buf = other_buf->next)
{
buf = _cairo_path_buf_create (other_buf->buf_size);
num_ops += other_buf->num_ops;
num_points += other_buf->num_points;
}
buf_size = MAX (num_ops, (num_points + 1) / 2);
if (buf_size) {
buf = _cairo_path_buf_create (buf_size);
if (buf == NULL) {
_cairo_path_fixed_fini (path);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
buf->num_ops = other_buf->num_ops;
buf->num_points = other_buf->num_points;
memcpy (buf->op, other_buf->op,
buf->num_ops * sizeof (buf->op[0]));
memcpy (buf->points, other_buf->points,
buf->num_points * sizeof (buf->points[0]));
for (other_buf = other->buf_head.base.next;
other_buf != NULL;
other_buf = other_buf->next)
{
memcpy (buf->op + buf->num_ops, other_buf->op,
other_buf->num_ops * sizeof (buf->op[0]));
buf->num_ops += other_buf->num_ops;
memcpy (buf->points + buf->num_points, other_buf->points,
other_buf->num_points * sizeof (buf->points[0]));
buf->num_points += other_buf->num_points;
}
_cairo_path_fixed_add_buf (path, buf);
}