Exemplos de _cairo_clip_intersect_boxes em C++ (Cpp)

Exemplo n.º 1

Arquivo: cairo-clip-boxes.c Projeto: Happy-Ferret/webkit.js

cairo_clip_t *
_cairo_clip_intersect_rectilinear_path (cairo_clip_t *clip,
					const cairo_path_fixed_t *path,
					cairo_fill_rule_t fill_rule,
					cairo_antialias_t antialias)
{
    cairo_status_t status;
    cairo_boxes_t boxes;

    _cairo_boxes_init (&boxes);
    status = _cairo_path_fixed_fill_rectilinear_to_boxes (path,
							  fill_rule,
							  antialias,
							  &boxes);
    if (likely (status == CAIRO_STATUS_SUCCESS && boxes.num_boxes))
	clip = _cairo_clip_intersect_boxes (clip, &boxes);
    else
	clip = _cairo_clip_set_all_clipped (clip);
    _cairo_boxes_fini (&boxes);

    return clip;
}

Exemplo n.º 2

Arquivo: cairo-spans-compositor.c Projeto: CODECOMMUNITY/cairo

static cairo_int_status_t
clip_and_composite_boxes (const cairo_spans_compositor_t	*compositor,
			  cairo_composite_rectangles_t		*extents,
			  cairo_boxes_t				*boxes)
{
    cairo_int_status_t status;
    cairo_polygon_t polygon;

    TRACE ((stderr, "%s\n", __FUNCTION__));
    status = trim_extents_to_boxes (extents, boxes);
    if (unlikely (status))
	return status;

    if (boxes->num_boxes == 0) {
	if (extents->is_bounded)
	    return CAIRO_STATUS_SUCCESS;

	return fixup_unbounded_boxes (compositor, extents, boxes);
    }

    /* Can we reduce drawing through a clip-mask to simply drawing the clip? */
    if (extents->clip->path != NULL && extents->is_bounded) {
	cairo_polygon_t polygon;
	cairo_fill_rule_t fill_rule;
	cairo_antialias_t antialias;
	cairo_clip_t *clip;

	clip = _cairo_clip_copy (extents->clip);
	clip = _cairo_clip_intersect_boxes (clip, boxes);
	if (_cairo_clip_is_all_clipped (clip))
	    return CAIRO_INT_STATUS_NOTHING_TO_DO;

	status = _cairo_clip_get_polygon (clip, &polygon,
					  &fill_rule, &antialias);
	_cairo_clip_path_destroy (clip->path);
	clip->path = NULL;
	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
	    cairo_clip_t *saved_clip = extents->clip;
	    extents->clip = clip;

	    status = clip_and_composite_polygon (compositor, extents, &polygon,
						 fill_rule, antialias);

	    clip = extents->clip;
	    extents->clip = saved_clip;

	    _cairo_polygon_fini (&polygon);
	}
	_cairo_clip_destroy (clip);

	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
	    return status;
    }

    if (boxes->is_pixel_aligned) {
	status = composite_aligned_boxes (compositor, extents, boxes);
	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
	    return status;
    }

    status = composite_boxes (compositor, extents, boxes);
    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
	return status;

    status = _cairo_polygon_init_boxes (&polygon, boxes);
    if (unlikely (status))
	return status;

    status = composite_polygon (compositor, extents, &polygon,
				CAIRO_FILL_RULE_WINDING,
				CAIRO_ANTIALIAS_DEFAULT);
    _cairo_polygon_fini (&polygon);

    return status;
}