C++ (Cpp) _cairo_path_fixed_equal Examples

Example #1

File: cairo-surface-clipper.c Project: angerangel/livecode-thirdparty

cairo_status_t
_cairo_surface_clipper_set_clip (cairo_surface_clipper_t *clipper,
				 cairo_clip_t *clip)
{
    cairo_status_t status;
    cairo_bool_t clear;

    /* XXX as we cache a reference to the path, and compare every time,
     * we may in future need to install a notification if the clip->path
     * is every modified (e.g. cairo_clip_translate).
     */

    if (clip == NULL && clipper->clip.path == NULL)
	return CAIRO_STATUS_SUCCESS;

    if (clip != NULL && clip->path == clipper->clip.path)
	return CAIRO_STATUS_SUCCESS;

    if (clip != NULL && clipper->clip.path != NULL &&
	_cairo_path_fixed_equal (&clip->path->path, &clipper->clip.path->path))
    {
	return CAIRO_STATUS_SUCCESS;
    }

    /* all clipped out state should never propagate this far */
    assert (clip == NULL || clip->path != NULL);

    /* Check whether this clip is a continuation of the previous.
     * If not, we have to remove the current clip and rebuild.
     */
    clear = clip == NULL || clip->path->prev != clipper->clip.path;

    _cairo_clip_reset (&clipper->clip);
    _cairo_clip_init_copy (&clipper->clip, clip);

    if (clear) {
	clipper->is_clipped = FALSE;
	status = clipper->intersect_clip_path (clipper, NULL, 0, 0, 0);
	if (unlikely (status))
	    return status;

	if (clip != NULL && clip->path != NULL) {
	    status =
		_cairo_surface_clipper_intersect_clip_path_recursive (clipper,
								      clip->path);
	    clipper->is_clipped = TRUE;
	}
    } else {
	cairo_clip_path_t *path = clip->path;

	clipper->is_clipped = TRUE;
	status = clipper->intersect_clip_path (clipper,
					       &path->path,
					       path->fill_rule,
					       path->tolerance,
					       path->antialias);
    }

    return status;
}

Example #2

File: cairo-clip.c Project: LittleForker/mozilla-central

static cairo_status_t
_cairo_clip_intersect_path (cairo_clip_t       *clip,
			    const cairo_path_fixed_t *path,
			    cairo_fill_rule_t   fill_rule,
			    double              tolerance,
			    cairo_antialias_t   antialias)
{
    cairo_clip_path_t *clip_path;
    cairo_status_t status;
    cairo_rectangle_int_t extents;
    cairo_box_t box;
    cairo_bool_t is_box = FALSE;

    if (clip->path != NULL) {
	if (clip->path->fill_rule == fill_rule &&
	    (path->is_rectilinear ||
	     (tolerance == clip->path->tolerance &&
	      antialias == clip->path->antialias)) &&
	    _cairo_path_fixed_equal (&clip->path->path, path))
	{
	    return CAIRO_STATUS_SUCCESS;
	}
    }

    _cairo_path_fixed_approximate_clip_extents (path, &extents);
    if (extents.width == 0 || extents.height == 0) {
	_cairo_clip_set_all_clipped (clip);
	return CAIRO_STATUS_SUCCESS;
    }

    is_box = _cairo_path_fixed_is_box (path, &box);
    if (clip->path != NULL) {
	if (! _cairo_rectangle_intersect (&extents, &clip->path->extents)) {
	    _cairo_clip_set_all_clipped (clip);
	    return CAIRO_STATUS_SUCCESS;
	}

	/* does this clip wholly subsume the others? */
	if (is_box &&
	    box.p1.x <= _cairo_fixed_from_int (clip->path->extents.x) &&
	    box.p2.x >= _cairo_fixed_from_int (clip->path->extents.x + clip->path->extents.width) &&
	    box.p1.y <= _cairo_fixed_from_int (clip->path->extents.y) &&
	    box.p2.y >= _cairo_fixed_from_int (clip->path->extents.y + clip->path->extents.height))
	{
	    return CAIRO_STATUS_SUCCESS;
	}
    }

    clip_path = _cairo_clip_path_create (clip);
    if (unlikely (clip_path == NULL))
	return _cairo_error (CAIRO_STATUS_NO_MEMORY);

    status = _cairo_path_fixed_init_copy (&clip_path->path, path);
    if (unlikely (status)) {
	clip->path = clip->path->prev;
	_cairo_clip_path_destroy (clip_path);
	return status;
    }

    clip_path->extents = extents;
    clip_path->fill_rule = fill_rule;
    clip_path->tolerance = tolerance;
    clip_path->antialias = antialias;
    if (is_box)
	clip_path->flags |= CAIRO_CLIP_PATH_IS_BOX;

    return CAIRO_STATUS_SUCCESS;
}