/* XXX: Perhaps this should compute a PixRegion rather than 4 doubles */
cairo_status_t
_cairo_path_fixed_bounds (cairo_path_fixed_t *path,
double *x1, double *y1,
double *x2, double *y2,
double tolerance)
{
cairo_path_bounder_t bounder;
cairo_status_t status;
_cairo_path_bounder_init (&bounder);
status = _cairo_path_fixed_interpret_flat (path, CAIRO_DIRECTION_FORWARD,
_cairo_path_bounder_move_to,
_cairo_path_bounder_line_to,
_cairo_path_bounder_close_path,
&bounder,
tolerance);
if (status == CAIRO_STATUS_SUCCESS && bounder.has_point) {
*x1 = _cairo_fixed_to_double (bounder.min_x);
*y1 = _cairo_fixed_to_double (bounder.min_y);
*x2 = _cairo_fixed_to_double (bounder.max_x);
*y2 = _cairo_fixed_to_double (bounder.max_y);
} else {
*x1 = 0.0;
*y1 = 0.0;
*x2 = 0.0;
*y2 = 0.0;
}
_cairo_path_bounder_fini (&bounder);
return status;
}
static int
_cairo_path_count (cairo_path_t *path,
cairo_path_fixed_t *path_fixed,
double tolerance,
cairo_bool_t flatten)
{
cairo_status_t status;
cpc_t cpc;
cpc.count = 0;
if (flatten) {
status = _cairo_path_fixed_interpret_flat (path_fixed,
_cpc_move_to,
_cpc_line_to,
_cpc_close_path,
&cpc,
tolerance);
} else {
status = _cairo_path_fixed_interpret (path_fixed,
_cpc_move_to,
_cpc_line_to,
_cpc_curve_to,
_cpc_close_path,
&cpc);
}
if (unlikely (status))
return -1;
return cpc.count;
}
void
_cairo_path_fixed_fill_extents (const cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_rectangle_int_t *extents)
{
cairo_path_bounder_t bounder;
cairo_status_t status;
_cairo_path_bounder_init (&bounder);
status = _cairo_path_fixed_interpret_flat (path, CAIRO_DIRECTION_FORWARD,
_cairo_path_bounder_move_to,
_cairo_path_bounder_line_to,
_cairo_path_bounder_close_path,
&bounder, tolerance);
assert (status == CAIRO_STATUS_SUCCESS);
if (bounder.has_point) {
_cairo_box_round_to_rectangle (&bounder.extents, extents);
} else {
extents->x = extents->y = 0;
extents->width = extents->height = 0;
}
}
cairo_status_t
_cairo_path_fixed_fill_rectilinear_to_polygon (const cairo_path_fixed_t *path,
cairo_antialias_t antialias,
cairo_polygon_t *polygon)
{
cairo_filler_ra_t filler;
cairo_status_t status;
if (antialias != CAIRO_ANTIALIAS_NONE)
return _cairo_path_fixed_fill_to_polygon (path, 0., polygon);
filler.polygon = polygon;
/* make sure that the closure represents a degenerate path */
filler.current_point.x = 0;
filler.current_point.y = 0;
filler.last_move_to = filler.current_point;
status = _cairo_path_fixed_interpret_flat (path,
_cairo_filler_ra_move_to,
_cairo_filler_ra_line_to,
_cairo_filler_ra_close,
&filler,
0.);
if (unlikely (status))
return status;
return _cairo_filler_ra_close (&filler);
}
static cairo_clip_t *
_cairo_clip_reduce_to_boxes (cairo_clip_t *clip)
{
struct reduce r;
cairo_clip_path_t *clip_path;
cairo_status_t status;
return clip;
if (clip->path == NULL)
return clip;
r.clip = clip;
r.extents.p1.x = r.extents.p1.y = INT_MAX;
r.extents.p2.x = r.extents.p2.y = INT_MIN;
r.inside = FALSE;
r.limit.p1.x = _cairo_fixed_from_int (clip->extents.x);
r.limit.p1.y = _cairo_fixed_from_int (clip->extents.y);
r.limit.p2.x = _cairo_fixed_from_int (clip->extents.x + clip->extents.width);
r.limit.p2.y = _cairo_fixed_from_int (clip->extents.y + clip->extents.height);
clip_path = clip->path;
do {
r.current_point.x = 0;
r.current_point.y = 0;
r.last_move_to = r.current_point;
status = _cairo_path_fixed_interpret_flat (&clip_path->path,
_reduce_move_to,
_reduce_line_to,
_reduce_close,
&r,
clip_path->tolerance);
assert (status == CAIRO_STATUS_SUCCESS);
_reduce_close (&r);
} while ((clip_path = clip_path->prev));
if (! r.inside) {
_cairo_clip_path_destroy (clip->path);
clip->path = NULL;
}
return _cairo_clip_intersect_box (clip, &r.extents);
}
static cairo_status_t
_cairo_path_populate (cairo_path_t *path,
cairo_path_fixed_t *path_fixed,
cairo_gstate_t *gstate,
cairo_bool_t flatten)
{
cairo_status_t status;
cpp_t cpp;
cpp.data = path->data;
cpp.gstate = gstate;
cpp.current_point.x = 0;
cpp.current_point.y = 0;
if (flatten) {
double tolerance = _cairo_gstate_get_tolerance (gstate);
status = _cairo_path_fixed_interpret_flat (path_fixed,
CAIRO_DIRECTION_FORWARD,
_cpp_move_to,
_cpp_line_to,
_cpp_close_path,
&cpp,
tolerance);
} else {
status = _cairo_path_fixed_interpret (path_fixed,
CAIRO_DIRECTION_FORWARD,
_cpp_move_to,
_cpp_line_to,
_cpp_curve_to,
_cpp_close_path,
&cpp);
}
if (unlikely (status))
return status;
/* Sanity check the count */
assert (cpp.data - path->data == path->num_data);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_path_fixed_fill_to_scan_converter (
cairo_path_fixed_t *path,
double tolerance,
cairo_scan_converter_t *converter)
{
scan_converter_filler_t filler;
cairo_status_t status;
scan_converter_filler_init (&filler, converter);
status = _cairo_path_fixed_interpret_flat (
path, CAIRO_DIRECTION_FORWARD,
scan_converter_filler_move_to,
scan_converter_filler_line_to,
scan_converter_filler_close_path,
&filler, tolerance);
if (status)
return status;
return scan_converter_filler_close_path (&filler);
}
static cairo_status_t
_cairo_path_populate (cairo_path_t *path,
cairo_path_fixed_t *path_fixed,
cairo_t *cr,
cairo_bool_t flatten)
{
cairo_status_t status;
cpp_t cpp;
cpp.data = path->data;
cpp.cr = cr;
if (flatten) {
status = _cairo_path_fixed_interpret_flat (path_fixed,
_cpp_move_to,
_cpp_line_to,
_cpp_close_path,
&cpp,
cairo_get_tolerance (cr));
} else {
status = _cairo_path_fixed_interpret (path_fixed,
_cpp_move_to,
_cpp_line_to,
_cpp_curve_to,
_cpp_close_path,
&cpp);
}
if (unlikely (status))
return status;
/* Sanity check the count */
XASSERT (cpp.data - path->data == path->num_data);
return CAIRO_STATUS_SUCCESS;
}
static int
_cairo_path_count (cairo_path_t *path,
cairo_path_fixed_t *path_fixed,
double tolerance,
cairo_bool_t flatten)
{
cairo_status_t status;
cpc_t cpc;
cpc.count = 0;
cpc.current_point.x = 0;
cpc.current_point.y = 0;
if (flatten) {
status = _cairo_path_fixed_interpret_flat (path_fixed,
CAIRO_DIRECTION_FORWARD,
_cpc_move_to,
_cpc_line_to,
_cpc_close_path,
&cpc,
tolerance);
} else {
status = _cairo_path_fixed_interpret (path_fixed,
CAIRO_DIRECTION_FORWARD,
_cpc_move_to,
_cpc_line_to,
_cpc_curve_to,
_cpc_close_path,
&cpc);
}
if (status)
return -1;
return cpc.count;
}
